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Wyświetlanie 1-25 z 25
Tytuł:
Small mammals feeding on hypogeous fungi
Autorzy:
Połatyńska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/765039.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
mycophagy
fungivory
spore dispersal rodents
Opis:
Grzyby stanowią pokarm dla wielu gatunków zwierząt. Spośród ssaków, większość gatunków żywi się grzybami w niewielkiej ilości oraz natrafiając na nie w czasie poszukiwania innego pokarmu, jednak dla niektórych gatunków, grzyby mogą stanowić dominujący element diety. Najwięcej przykładów mykofagicznych ssaków można znaleźć wśród małych zwierząt: torbaczy (walabie i kanguroszczury) oraz gryzoni (wiewiórki, myszy i nornice). Grzyby podziemne zajmują bardzo specyficzną niszę ekologiczną, jako partnerzy mykoryzowi drzew, tworzący zamknięte owocniki, nie przystosowane do dyspersji zarodników z prądami powietrza. Z tego powodu głównymi wektorami rozpraszania tych grzybów są zwierzęta odżywiające się podziemnymi owocnikami i roznoszące zarodniki w odchodach. Zwierzęta które regularnie żywią się grzybami posiadają fizjologiczne i morfologiczne adaptacje do trawienia tego typu pokarmu i uzyskania z niego jak największej ilości przyswajalnej materii. Zarodniki pozostają zdolne do dalszego rozwoju po wydaleniu na zewnątrz organizmu zwierzęcego. Badania laboratoryjne wskazują, że w przypadku niektórych gatunków wpływa to wręcz korzystnie na tempo dalszego rozwoju zarodników, oraz na ich zdolność do zawiązywania mykoryzy. Zwierzęta w ekosystemie leśnym zależą od drzew jako od miejsc schronienia, żerowania i rozmnażania. Tyczy się to zarówno gatunków mykofagicznych, roznoszących zarodniki grzybów podziemnych, jak i zwierząt drapieżnych. Z kolei drzewa zależą od grzybów mykoryzowych wpływających na ich rozwój i kondycję. Ważnym jest zatem, aby poszerzać wiedzę o powiązaniach między organizmami tworzącymi ekosystem leśny, gdyż jakiekolwiek zaburzenie w tej sieci zależności (jak na przykład selektywna wycinka drzew, lub ograniczanie populacji gryzoni uznanych za szkodniki), może wpłynąć na pozostałe elementy ekosystemu. 
Fungi serve as a food source for a wide variety of animals. Among mammals, most species feed on fungi occasionally or accidentally while foraging for other type of food, but some species are frequent mycophags and fungi can be a dominant component of their diet. Examples of mycophags can be found among marsupials: wallabies and bettongs; and rodents: squirrels, chipmunks, voles and mice. Hypogeous fungi produce closed, underground sporocarps without opening mechanisms, and thus are unable to release their spores into the air. In case of those fungi, animals feeding on sporocarps and spreading spores in their faeces are considered to be the main vector of spore dispersal. Animals that frequently feed on fungi and other heavy digestible food have developed morphological adaptations such as longer gut retention and a spiral construction of the proximal colon, to digest more fungal material which is rich in nitrogen. The spores stay viable after passing through the animal gut, and in some cases their ability to germinate and form mycorrhiza is enhanced after leaving the intestine. Hypogeous fungi are mycorrhizal partners for plants and it is therefore possible that the interactions between mycorrhizal fungi and animals spreading their spores also play an important role in ecosystem functioning.
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2014, 10; 89-95
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the oribatid and mesostigmatid mites (Acari) of the High Arctic island of Hopen
Autorzy:
Coulson, Stephen J.
Schatz, Heinrich
Gwiazdowicz, Dariusz J.
Solhøy, Torstein
Powiązania:
https://bibliotekanauki.pl/articles/2051347.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
Hopen
Acarina
diversity
dispersal
Źródło:
Polish Polar Research; 2014, 1; 133-139
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Macro-plastic litter, a new vector for boreal species dispersal on Svalbard
Autorzy:
Węsławski, Jan Marcin
Kotwicki, Lech
Powiązania:
https://bibliotekanauki.pl/articles/2042124.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
macro-plastic
beach litter
species dispersal
Źródło:
Polish Polar Research; 2018, 39, 1; 165-174
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of Wheat (Triticum Aestivum, L.) Seed Quality of Certified Seed and Farm- Saved Seed in Three Provinces of Iran
Autorzy:
Khazaei, Fardin
AghaAlikhani, Majid
Mobasser, Samad
Mokhtassi-Bidgoli, Ali
Asharin, Hesam
Sadeghi, Hossein
Powiązania:
https://bibliotekanauki.pl/articles/2199663.pdf
Data publikacji:
2016-06-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
germination indices
seed production system
vigor
weed seed dispersal
winnowing
Opis:
The objective of this study was to study the seed quality aspects of wheat (Triticum aestivum L.) and the extent of weed seed contamination present in wheat seeds produced in different regions of Iran. Four districts (cities), each including 12 fields (six certified seed fields and six farm-saved seed fields), were selected in each regions (provinces). One kilogram of the wheat seed sample was collected from each field for analysis in the laboratory. Wheat seeding was commonly done by farm-saved seed sourced from within the farm due to the high costs of certified seeds purchased from outside sources, followed by the low seed quality. The use of a farm-saved seed resulted in a higher germination rate and a lower mean time to germination compared with another system. The more positive temperatures experienced by mother plants could decrease the number of normal seedling and seedling length vigor index. Generally there was virtually no difference about physiological quality between certified seed and farm- saved seed sector that is related to lower quality of certified seed. The certified produced seeds had the lower number of weed seed, species and genus before and after cleaning. The highest seed purity and 1000 seed weight was obtained from the certified seed production system. The need for cleaning the farm-saved seed samples before sowing is one of the important findings of this survey.
Źródło:
Plant Breeding and Seed Science; 2016, 73; 99-115
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dispersal and individual variability: laboratory experiments with the woodlouse Porcellio scaber
Dyspersja i zmienność osobnicza: eksperymenty laboratoryjne ze stonogą Porcellio scaber
Autorzy:
Uchmański, Janusz
Kopaliński, Krzysztof W.
Rau, Karolina
Uvarov, Alexei V.
Powiązania:
https://bibliotekanauki.pl/articles/470894.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
dyspersja
Porcelio scober
zróżnicowanie osobnicze
woodlouse
Porcellio scaber
dispersal
individual variability
Opis:
Laboratoryjne eksperymenty nad dyspersją stonogi Porcellio scober pokazują, że możliwość dyspersji zmniejsza intensywność konkurencji wewnątrzgatunkowej. Decyzja dotycząca dyspersji z aktualnie zajmowanego siedliska do sąsiedniego nie zależała w tym eksperymencie od ciężaru osobnika. Jedyną kategorią osobników, które starały się unikać dyspersji były noszące jaja samice. Może to wynikać z tego, że stonogi tego gatunku penetrują środowisko poruszając się przypadkowo, ale mogło być także dodatkowo rezultatem tego, iż środowisko życia stonóg było w tym eksperymencie tak zaaranżowane, iż koszty dyspersji były niskie.
Laboratory experiments on the dispersal of woodlouse Porcellio scaber showed that the possibility to disperse diminished the intensity of intraspecific competition. The decision to disperse from local habitat to another one didn’t depend on the weight of individual. The only category of individuals that tried to avoid dispersal were females carrying eggs. This can be connected with the Brownian way of movement of woodlouse during penetration of surrounding environment or with the arrangement of the experiment in which the costs of dispersal were low.
Źródło:
Studia Ecologiae et Bioethicae; 2017, 15, 4; 15-21
1733-1218
Pojawia się w:
Studia Ecologiae et Bioethicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors determining natural regeneration of yew (Taxus baccata L.) in the Kórnik Arboretum
Autorzy:
Giertych, P.
Powiązania:
https://bibliotekanauki.pl/articles/41677.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
seed dispersal
Turdidae
environmental factor
natural regeneration
yew
Taxus baccata
Sitta europea
regeneration
Kornik Arboretum
Opis:
All yew plants in the Kórnik Arboretum have been plotted onto maps of individual sectors and analysed with respect to location category (“near trunk”, “under canopy”, “in the open”), size (assumed to reflect age), genus of tree associated with in the “near trunk” category and environmental factors characterising the respective Arboretum sectors. There is practically no regeneration “in the open” (0.2%), most of it 82.5% is “under canopy” and only 17.3% “near the trunk”. It is assumed that thrushes (Turdidae) are primarily responsible for regeneration in the under canopy category (endozoochoria) and nuthatches (Sitta europea L.) in the near trunk category (synzoochoria). Under canopy regeneration exists in all size classes while near the trunk there is a distinct decline in the number of yew plants with increase in size (age) suggesting that conditions for further development there are less favourable. Nutchatches disperse yew seeds in the vicinity of mother plants, for cleaning them preferring trees to shrubs and particularly trees with smooth bark trunks (Fagus, Carpinus), however yew survival near the trunk is better under conifers. Thrushes disperse yew seed over wider areas. Survival of yews is best under loose canopies, in moderate shade, on drier well draining, low pH, soils.
Na planach sekcji Arboretum Kórnickiego zaznaczono wszystkie cisy, wyróżniając kategorię lokalizacji („przy pniu”, „pod koroną”, „naotwa rtej przestrzeni”), rozmiar cisa (związany z wiekiem), rodzaj drzewa dlaka tegorii „przy pniu” i czynniki środowiskowe różnicujące sekcje Arboretum. Praktycznie nie ma odnowienia„ naotwa rtej przestrzeni” (0,2%), większość cisów rośnie „pod koronami” (82,5%), a tylko 17,3% „przy pniu”. Zakłada się, że głównie drozdowate (Turdidae) są odpowiedzialne za odnowienie „pod koronami” (endozoochoria), a kowaliki (Sitta europea L.) „przy pniu” (synzoochoria). „Pod koronami” jest odnowienie we wszystkich klasach wielkości (wieku), a „przy pniu” obserwuje się wyraźny spadek liczebności wraz ze wzrostem siewek, co sugeruje, że warunki rozwoju są tam gorsze. Kowaliki roznoszą nasiona cisa w pobliżu drzew matecznych, ado ich czyszczeniapreferują pnie drzew bardziej niż krzewów i to drzew o gładkiej korze (Fagus, Carpinus), cisy natomiast przeżywają lepiej „przy pniu” drzew iglastych. Drozdowate rozprowadzają nasiona na większym obszarze. Utrzymanie się odnowieniajest najskuteczniejsze pod luźnym zadrzewieniem, w niewielkim ocienieniu, na suchszych, przepuszczalnych glebach, o niskim pH.
Źródło:
Dendrobiology; 2000, 45
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of the flora of fallow lands on rendzina soils on the Twardowice Plateau (Silesian Upland)
Charakterystyka flory odłogów na rędzinach Płaskowyżu Twardowickiego (Wyżyna Śląska)
Autorzy:
Babczynska-Sendek, B.
Blonska, A.
Hejdysz, J.
Powiązania:
https://bibliotekanauki.pl/articles/27851.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
flora
fallow
rendzina soil
field
secondary succession
xerothermic grassland
anthropophyte
seed dispersal
Twardowice Plateau
Silesian Upland
Źródło:
Acta Agrobotanica; 2012, 65, 4
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A home away from home: a meiobenthic assemblage in a ships ballast water tank sediment
Autorzy:
Radziejewska, T.
Gruszka, P.
Rokicka-Praxmajer, J.
Powiązania:
https://bibliotekanauki.pl/articles/48228.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Sopot
meiobenthos
marine organism
bottom
biological invasion
dispersal
invasion
conference
Baltic Sea
sediment
meiobenthic animal
water column
Opis:
The world-wide research on ship-aided dispersal of marine organisms and invasions of non-indigenous species focuses primarily on the plankters, which show the greatest potential for invading new areas and establishing viable populations in them, either in the water column (holoplankton) or on the bottom (meroplanktonic larvae of benthic species settling on the sea floor). As meiobenthic animals usually lack a pelagic larval stage in their life cycle, no biological invasion study has, to our knowledge, ever specifically targeted marine transport as a means of meiofaunal dispersal. Here we present a set of data showing that the sediment deposited in a ship’s ballast water tank does support a viable meiobenthic assemblage. We examined 0.015-dm3 aliquots of a 1 dm3 sample from a c. 1.5-cm thick layer of sediment residue in the ballast tank of MS Donnington, brought to the ‘Gryfia’ Repair Shipyard in Szczecin (Poland). The samples were found to contain representatives of calcareous Foraminifera, hydrozoans, nematodes, turbellarians, harpacticoid copepods and their nauplii, and cladocerans, as well as meiobenthic-sized bivalves and gastropods. Nematodes proved to be the most constant and most numerous component of the assemblage. The sediment portions examined revealed the presence of 1–11 individuals representing 11 marine nematode genera. The viability of the meiobenthic assemblage was evidenced by the presence of ovigerous females of both nematodes and harpacticoids. Survival of the meiobenthos in shipborne ballast tank sediment residues may provide at least a partial explanation for the cosmopolitan distribution of meiobenthic taxa and may underlie the successful colonisation of new habitats by invasive meiofaunal species.
Źródło:
Oceanologia; 2006, 48, S
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany struktury przestrzennej przemysłu województwa małopolskiego
Changes in the spatial structure of industry in the Małopolska Region
Autorzy:
Ciechowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/439177.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
dekoncentracja przestrzenna
przedsiębiorstwa przemysłowe
przemysł
struktura przestrzenna
województwo małopolskie
spatial dispersal
industrial enterprises
industry
spatial structure
Małopolska region
Opis:
Głównym celem pracy jest analiza zmian struktury przestrzennej przemysłu województwa małopolskiego. W szczególności badania skupiają się na przemianach przemysłu w okresie integracji europejskiej oraz kryzysu gospodarczego. Na podstawie analizy wykazano, że struktura przestrzenna przemysłu województwa małopolskiego charakteryzuje się stabilnością i nie uległa znaczącym zmianom w ostatnich latach. Obserwowana była jednak dekoncentracja przestrzenna działalności przemysłowej, która wiąże się przede wszystkim z rozwojem przemysłu w strefie zewnętrznej Krakowskiego Obszaru Metropolitalnego. W dalszym ciągu wysokim stopniem uprzemysłowienia charakteryzują się: Krakowski Obszar Metropolitalny, zachodnie powiaty województwa małopolskiego, a także niektóre miasta, jak Tarnów, Nowy Sącz czy Gorlice.
The main goal of the paper is to analyze changes in the spatial structure of industry in the Małopolska region. In particular, the research focuses on industrial change in the period of European integration and during economic crisis. On the basis of the analysis, it was showed that the spatial structure of industry is characterized by stability and has not changed in recent years. However, industrial dispersal and industrial development in the outer zone of the Cracow Metropolitan Area was observed. The Cracow Metropolitan Area, western parts of the region, and a few cities, e.g. Tarnów, Nowy Sącz and Gorlice, are still the most industrialised areas of the Małopolska region.
Źródło:
Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego; 2014, 27; 197-210
2080-1653
Pojawia się w:
Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of vascular plant species in woodland patches of Ojcow National Park (southern Poland) in relation to seed dispersal
Autorzy:
Moszkowicz, L.
Powiązania:
https://bibliotekanauki.pl/articles/58019.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
plant distribution
vascular plant
plant species
woodland
Ojcow National Park
Polska
seed dispersal
species richness
ancient woodland
multiple regression
Opis:
Plant diaspore dispersal is a fundamental process affecting the development of forest vegetation and its natural regeneration, especially with regard to typical woodland species, which spread slowly and form short-term soil seed banks. Most of these species have poor seed dispersal mechanisms, which is the major cause of their very slow expansion. The following questions were asked: (i) is there a relationship between the age of a woodland and the presence of forest vascular plant species representing different seed dispersal types; (ii) how do the proportions change between species representing different seed dispersal types in relation to the age of woodland; (iii) what factors determine the presence of species representing a given seed dispersal type; (iv) which factors affect the presence and which ones influence the abundance of selected woodland species? A multiple regression models were developed based on data obtained from 144 woodland patches designated for the study. A probit regression analysis was performed for selected species exhibiting various seed dispersal models. Woodland plants of all seed dispersal types show a significant relationship with the age of woodland, starting from the strongest linkage: anemochores, myrmecochores, endozoochores, epizoochores, barochores, autochores. As the woodland ages, the proportion of forest myrmecochores and anemochores grows, whilst the proportion of autochores, epizoochores and endozoochores shrinks. Results obtained indicate that the direct proximity of ancient woodland has a major effect on the occurrence of more poorly dispersing plants in recent woodlands, such as myrmecochores and heavy anemochores.
Źródło:
Acta Societatis Botanicorum Poloniae; 2016, 85, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial structure of a natural mixed topodeme of subalpine Sorbus taxa
Autorzy:
Gomory, D
Krajmerova, D.
Powiązania:
https://bibliotekanauki.pl/articles/59154.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
spatial structure
genetic variation
Sorbus
subalpine plant
apomixis
microsatellite
dispersal
hybrid
Sorbus chamaemespilus
Sorbus aria
Sorbus aucuparia
reproductive system
Opis:
Spatial distribution and genetic variation of a population of Sorbus chamaemespilus (L.) Crantz and putative hybrids between S. chamaemespilus, S. aria and S. aucuparia growing in the nature reserve Skalnä Alpa (central Slovakia) were studied. The analysis of spatial patterns using Ripley's K-function revealed a significant clustering of the adults of both S. chamaemespilus and hybrid taxa at distances up to ~15 m and a strong affinity between both taxonomical groups, indicating similar ecological requirements. Bivariate point-pattern analysis considering cardinal direction showed that juvenile individuals of S. chamaemespilus are clustered around the adults up to the distance of ~2 m, whereas in hybrid taxa with larger and more dense crowns, juveniles are clustered at distances more than ~3 m from the adults. The analysis of genetic variation in a subset of adult shrubs using 4 nuclear microsatellite loci revealed that unlike expected, there was no variation in S. chamaemespilus but several genotypes were found in the group of hybrid taxa. Implications for the reproduction system and conservation of the investigated taxa are discussed.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 4; 305-311
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strukturalne i krajobrazowe aspekty przemian wiejskich jednostek osadniczych a planowanie przestrzenne
Structural and landscape aspects of transformations of rural settlement units versus spatial planning
Autorzy:
Krzyk, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/447618.pdf
Data publikacji:
2010-06
Wydawca:
Instytut Rozwoju Miast
Tematy:
wiejskie jednostki osadnicze
planowanie przestrzenne
rozproszenie zabudowy
urbanizacja wsi
rural settlement units
spatial planning
dispersal of development
urbanization of villages
Opis:
W artykule zwrócono uwagę na urbanizację i wielofunkcyjny rozwój obszarów wiejskich, implikujący ich zmiany strukturalne i przestrzenne. Zmiany zachodzące na obszarze wiejskich jednostek osadniczych rodzą problemy społeczne, ekonomiczne i przestrzenne. Najważniejszym problemem przestrzennym obszarów wiejskich w Polsce jest rozproszenie zabudowy. Jeśli nie zostanie ono w przyszłości zahamowane, może zwiększyć bariery cywilizacyjnego rozwoju wsi. Czynnikiem znacznie zmieniającym strukturę przestrzenną, krajobrazową i warunki środowiska obszarów wiejskich jest lokalizacja inwestycji, np. dróg krajowych, obiektów przemysłowych, farm hodowlanych i in. W kształtowaniu środowiska i zagospodarowaniu gmin, zapewniającym zrównoważony rozwój wiejskich jednostek osadniczych, ważne są (mimo wielu niedoskonałości) instrumenty planowania przestrzennego, które zostały pokrótce omówione.
The article considers urbanization and multi-functional development of rural areas, which imply their structural and spatial changes. Those changes occurring in rural settlement unit areas bear social, economic and spatial problems. The most important spatial problem of rural areas in Poland is the dispersal of development. Unless it is stopped in future, it may enhance the barriers of civilization growth of villages. The factor, which considerably changes spatial and landscape structures, as well as environmental conditions of rural areas, is the location of various investment projects, e.g. national roads, industrial facilities, breeding farms, and others. However, these are spatial planning instruments, which (despite their numerous deficiencies) are vital for developing of environment and developing of communes. Those tools have been shortly reviewed.
Źródło:
Problemy Rozwoju Miast; 2010, 2; 25-34
1733-2435
Pojawia się w:
Problemy Rozwoju Miast
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Osteology of the Late Cretaceous alvarezsauroid Linhenykus monodactylus from China and comments on alvarezsauroid biogeography
Autorzy:
Xu, X.
Upchurch, P.
Ma, Q.
Pittman, M.
Choiniere, J.
Sullivan, C.
Hone, D.W.E.
Tan, Q.
Tan, L.
Xiao, D.
Han, F.
Powiązania:
https://bibliotekanauki.pl/articles/20629.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
osteology
Cretaceous
Late Cretaceous
alvarezsauroid
Linhenykus monodactylus
China
biogeography
Dinosauria
Theropoda
Parvicursorinae
Treefitte
dispersal
vicariance
sympatry
Wulansuhai Formation
Inner Mongolia
Opis:
The alvarezsauroid theropod Linhenykus monodactylus from the Upper Cretaceous of Inner Mongolia, China is the first knownmonodactyl non−avian dinosaur, providing important information on the complex patterns of manual evolution seen in alvarezsauroids. Herewe provide a detailed description of the osteology of this taxon. Linhenykus shows a number of fea− tures that are transitional between parvicursorine and non−parvicursorine alvarezsauroids, but detailed comparisons also re− veal that some characters had a more complex distribution. We also use event−based tree−fitting to perform a quantitative analysis of alvarezsauroid biogeography incorporating several recently discovered taxa. The results suggest that there is no statistical support for previous biogeographic hypotheses that favour pure vicariance or pure dispersal scenarios as explana− tions for the distributions of alvarezsauroids across SouthAmerica, NorthAmerica andAsia. Instead, statistically significant biogeographic reconstructions suggest a dominant role for sympatric (or “within area”) events, combined with a mix of vicariance, dispersal and regional extinction. At present the alvarezsauroid data set is too small to completely resolve the biogeographic history of this group: future studies will need to create larger data sets that encompass additional clades.
Źródło:
Acta Palaeontologica Polonica; 2013, 58, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and distributional patterns of the invasive flora in a protected mountain area - a case study of Medvednica Nature Park (Croatia)
Autorzy:
Vukovic, N.
Bernardic, A.
Nikolic, T.
Hrsak, V.
Plazibat, M.
Jelaska, S.D.
Powiązania:
https://bibliotekanauki.pl/articles/56776.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
distribution pattern
invasive flora
flora
protected area
mountain area
Medvednica Nature Park
Croatia
invasive plant
alien plant
dispersal strategy
habitat
regression
Opis:
In this paper we have analysed invasive flora of Medvednica Nature Park, Croatia with respect to their origins, life forms, systematic positions, types of seed dispersal, Ellenberg indicator values and spatial distributions using MTB 1/64 grid units for analyses. A total of 27 invasive plant species, belonging to 14 families, were recorded with Asteraceae being the most frequently occurring family. Therophytes were the most common life form, as is generally true of Croatian invasive plants; however, hemicryptophytes and geophytes were more frequent in Medvednica. Here, invasive plants originated mainly from both Americas with slightly lower portion in comparison to all Croatian invasive plants, while contrary was the case when comparing those originated from Asia. The most widespread species was Erigeron annuus (L.) Pers., and the species with the lowest occurrence were Chamomilla suaveolens (Pursh.) Rydb and Datura innoxia Mill. A multiple regression model explains 44% of the spatial variability in the invasive plants data per MTB 1/64 unit, using the number of all recorded plant species, the average elevation and the lengths of paths and roads as estimators. The latter two variables also had the most influence on the ordination axes in analyses of the spatial distribution of seed dispersal types present in each MTB 1/64 unit. Anemochory was the most frequent type of seed dispersal.
Źródło:
Acta Societatis Botanicorum Poloniae; 2010, 79, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strong potential for endozoochory by waterfowl in a rare, ephemeral wetland plant species, Astragalus contortuplicatus (Fabaceae)
Autorzy:
Lovas-Kiss, A.
Sonkoly, J.
Vincze, O.
Green, A.J.
Takacs, A.
Molnar, A.V.
Powiązania:
https://bibliotekanauki.pl/articles/56900.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
strong potential
endozoochory
waterfowl
rare species
wetland
plant species
Astragalus contortuplicatus
Fabaceae
germination
experiment
mallard
seed dispersal
seed ecology
seed viability
Opis:
It was proposed previously that passive dispersal by migratory aquatic birds explain the widespread distribution of many wetland organisms. Several experimental studies have shown that many widespread wetland plant species can be readily dispersed within the guts of Anatidae. However, it is unclear whether plants with a more restricted distribution are able to disperse via waterbirds. This paper addresses the dispersal ability and germination ecology of the little-known Hungarian milkvetch Astragalus contortuplicatus, which occurs on banks of continental rivers and has a limited and unpredictable distribution. To test whether limited capacity for endozoochory by waterfowl could explain the sporadic appearance of this species, we force-fed ten captive mallards (Anas platyrhynchos) with 100 milkvetch seeds each. Droppings were collected for up to 45 h after feeding. Intact and viable seeds were found in the droppings of each mallard, and altogether 24.7% of seeds fed were recovered intact. The proportion of retrieved seeds that germinated (27.0%) was significantly higher than that of untreated control seeds (0.5%), but significantly lower than that of mechanically scarified seeds (96.0%). Retrieved seeds that germinated developed into healthy mature plants. Given the average flight velocity of mallards, seeds of A. contortuplicatus may travel up to 1600 km inside the digestive tract of migrating individuals. Our results suggest that avian vectors may be more important for the dispersal of rare higher plants (especially those with a hard seed-coat) than hitherto considered. Moreover, they suggest that rarity does not necessarily indicate limited dispersal ability, and may instead be explained by specific habitat requirements.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current state, habitat and potential invasiveness of Montia linearis (Douglas ex Hook.) Greene in Poland
Autorzy:
Dembicz, I.
Kozub, L.
Zaniewski, P.T.
Powiązania:
https://bibliotekanauki.pl/articles/59192.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
present state
habitat
biological invasion
Montia linearis
narrowleaf miner's lettuce
weed dispersal
intensive agriculture
cattle
animal breeding
meadow
non-native species
Polska
Opis:
Montia linearis is a vascular plant originating from western North America. The expansion of this species has been observed for several decades. For the first time M. linearis was found in Europe in 1989. Further six populations were documented by 2004 within the continent: three in Poland, two in Denmark and one in Hungary. Apart from discovering a new population of M. linearis, we confirmed two out of the three previously known localities of the species in Poland. All the currently known populations of M. linearis occupied predominantly meadow habitats, especially intensively managed sites. Some individuals were also found in disturbed sites with bare soil. The studied species inhabited soils of various types with broad range of fertility as well as humidity. Montia linearis populations reached densities up to 87 individuals per 0.04 m2. The number of seeds produced by an individual was between 10 and 55 in 90% of the studied specimens, however much more fertile specimens were also observed. As the previously presented hypothesis of M. linearis dispersal with rail transport seemed not to be well supported, the connection between the M. linearis presence and cattle husbandry is considered. It is possible that the species can be transferred with living animals or manure. The species was able to survive for at least 26 years within once inhabited site. Further spread of M. linearis within Europe is highly probable. The aim of the study is to: (i) describe the current state of populations of M. linearis in Poland, (ii) provide information on habitat preferences and biology of the species, (iii) assess the invasiveness potential of M. linearis in Poland.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola sójki (Garrulus glandarius) w inicjowaniu przemian sukcesyjnych zbiorowisk leśnych z udziałem dębu (Quercus sp.)
Role of jay (Garrulus glandarius) in initializing successional changes in forest communities with the participation of oak (Quercus sp.)
Autorzy:
Olszewski, A.
Brzeziecki, B.
Powiązania:
https://bibliotekanauki.pl/articles/980357.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
zbiorowiska lesne
sukcesja roslin
dab
Quercus
zoochoria
sojka
Garrulus glandarius
acorn
jay
oak
ornitochory
seed dispersal
stand heterogeneity
tree succession
zoochory
Opis:
The ability of spatial expansion and conquering of new locations, suitable for growth, is one of the most important properties enabling different plant species (including forest trees) a permanent existence in a constantly changing (in space and in time) environment. In the course of evolution, plants developed several adaptations and mechanisms enabling them to capture new localities appropriate for life. The key role in this process is played by so called propagules, i.e. differently built spores, seeds and fruits. The main sources of forces and major transportation vectors for propagules are such mechanisms as: power of gravity (barochory), wind (anemochory), water (hydrochory), animals (zoochory) and man (antropochory). Among them, in case of tree species producing large seeds, containing bulky amounts of food resources, the most important role is played by zoochory. The special variant of zoochory is ornitochory, i.e. dispersion of plant propagules by birds. One of the best known and documented examples of ornitochory is dispersal of oak acorns by jays (Garrulus glandarius). The contemporary research shows that during a vegetation period one single bird is able to deposit even several thousends of acorns within the area of 10 to 100 ha. The dispersal distance in case of acorns distributed by jays is variable and depends on several factors, first of all, climatic conditions and degree of environmental heterogeneity. On average, acorns are distributed within a distance of several hundred meters from seed trees; sometimes they are disseminated at a distance of several (4−8, maximum 20) kilometers. As a rule, only a part of deposited acorns is uncovered and consumed by birds, thus at least some of them can germinate and produce new oak seedlings. It was also recently demonstrated that jays preferably put down acorns under the stand canopies composed by tree species other than oak, for instance, under Scots pine trees. Under favourable conditions, this initiates natural successional processes and leads to a significant conversion of tree stand composition. Considering a large scale and commonness of this phenomenon, it deserves an interest and attention, not in the case of natural forests only, but in the case of managed forests as well, in which the quasi−natural, successional processes, initiated by jays, can considerably contribute to a greater compositional and structural diversity of tree stands.
Źródło:
Sylwan; 2019, 163, 06; 479-88
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The spatial pattern and microsites requirements of Abies alba natural regeneration in the Karkonosze Mountains
Autorzy:
Szymura, T H
Dunajski, A.
Aman, I.
Makowski, M.
Szymura, M.
Powiązania:
https://bibliotekanauki.pl/articles/41501.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Karkonosze Mountains
Norway spruce
Picea abies
silver fir
Abies alba
microsite requirement
natural regeneration
age structure
browsing
safe site
seedling dispersal
spatial distribution
Opis:
Progeny of four adult silver firs, which were an admixture in Norway spruce (Picea abies) stand was, analyzed. The study was done in lower mountain zone of the Karkonosze (Giant Mts.) National Park (SW Poland). The seedlings occurred in two clumps related to the position of adult trees, whereas spatial pattern of the seedlings inside each clump was random. The seedlings were spaced mainly in distances 5–25 from the nearest adult tree. The maximal distance was up to 50 m. Most seedlings were established in accordance with main wind directions. Also, in these directions seedlings were more distant from adult trees than in other directions. The seedlings grew in better light environment (12% of PPFD) than average (9,6% PPFD). This effect was statistically significant. The height increment of the seedlings was low and was not correlated with light conditions. Similarly, there was not any correlation between the apical dominance ratio and light. The lack of this correspondence we attributed to browsing. The silver fir seedlings were significantly underrepresented in patches of Vaccinium myrtillus, on raw needles, under crown of adult trees and in concave micro-relief form. The underrepresentation in the places covered by canopy and in patches of bilberry we related to the indirect effect of continuous browsing, which leads to higher seedlings mortality in more shaded places and sites of stronger competition between forest floor vegetation and silver fir seedlings.
Źródło:
Dendrobiology; 2007, 58; 51-57
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dyspersja i przemieszczanie się dzików (Sus scrofa L.) w silnie zurbanizowanym krajobrazie polno−leśnym w Polsce centralnej
Dispersion and movement pattern of Wild boar (Sus scrofa L.) in agro-forestry landscape under strong pressure from urbanization in central Poland
Autorzy:
Nasiadka, P.
Powiązania:
https://bibliotekanauki.pl/articles/994102.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lowiectwo
zwierzeta lowne
dzik
Sus scrofa
wystepowanie
rozproszenie
przemieszczanie sie zwierzat
krajobraz polno-lesny
tereny zurbanizowane
Polska Centralna
wild boar
dispersal
migration
hunting
Opis:
The research analyses the use of space by the Wild boar living in a human−transformed landscape. CMR method was used. Animals were caught in two complexes from February 2009 to May 2010. Fifty boars were captured. Information on the location and hunting time were collected. Results show small range of activity of investigated Wild boars. Animals were shot within 4 km from the trapping place. The longest distance that Wild boar had passed amounted to over 20 km. Most boars survived up to 50 days from the date of their catch. The maximum survival time was 373 days. Small dispersion of Wild boars is probably caused by philopatry, sufficient food resources and shelter, and the ability to adapt to human presence near the refuges.
Źródło:
Sylwan; 2013, 157, 12; 937-945
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synzoochoryczne rozsiewanie żołędzi przez sójki Garrulus glandarius na powierzchniach zrębowych oraz pod drzewostanem
Acorns dispersal by jays Garrulus glandarius onto clear-cuts and under the forest canopy
Autorzy:
Kurek, P.
Dobrowolska, D.
Powiązania:
https://bibliotekanauki.pl/articles/989292.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewa lesne
dab
Quercus
zoochoria
sojka
Garrulus glandarius
synzoochoria
zreby
drzewostany
odnowienia lasu
quercus sp
. acorn dispersal
jay
site preferences
clear−cuttings
Opis:
The aim of this study was to analyse the preferences of jays in terms of oak acorn deposition in accordance to availability of some types of habitat. Investigations were carried out in forested areas of the Olsztyn Lakeland (NE Poland) with Scots pine forests domination. In autumn of 2014 and 2015 122 acorns of Quercus robur with concealed Telenax transmitters were served in four locations and then dispersed by jays Garrulus glandarius. Acorns with transmitters were radio tracked and localized after dispersion in different types of habitats. We distinguished three types of habitat: forest stands >40 years old, young forests <25 years old as well as clear−cuts and other open areas. The availability of habitats were estimated by 144 random points (36 per each location). Obtained availability/utilisation data were analyzed with chi square test ( =0.05). Results showed that majority (76.4%) of dispersed acorns were deposited under canopy of Scots pine stands, while only 8.2% were deposited on clear−cuts and other open areas. It seems that jays avoid to scatter its caches among clear−cuts and other open areas when availability of these types of environment is compared. Jays preferred to scatter the acorns under canopy of older (>40 years old) stands. It proves that the regeneration of oaks in clear−cuts is with low probability of success. The results suggest that density and high quality of regeneration that occurred on some of the clear−cuts seem to be a synchronization relic of oaks' mast crop and Scots pine fellings. In these circumstances the best solution to obtain oak regeneration is to synchronize the harvest with mast crops and carry it out immediately after acorn production to make an oak regeneration success guaranteed.
Źródło:
Sylwan; 2016, 160, 06; 512-518
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena długodystansowego rozsiewu rokitnika zwyczajnego (Hippophae rhamnoides L.) na zwałowisku wewnętrznym Kopalni Węgla Brunatnego Bełchatów
Assessment of sea buckthorn (Hippophae rhamnoides L.) long distance dispersal on the internal waste heap of the Belchatow lignite mine
Autorzy:
Bolibok, L.
Kubiak, M.
Michalski, S.
Powiązania:
https://bibliotekanauki.pl/articles/1292163.pdf
Data publikacji:
2018
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
hodowla lasu
rokitnik zwyczajny
Hippophae rhamnoides
rozsiew dlugodystansowy
rekultywacja terenow
zwalowiska wewnetrzne
Kopalnia Wegla Brunatnego Belchatow
long distance dispersal
sea-buckthorn
soil conditions
slope aspect
Opis:
Long distance dispersal is a key process occurring in plant communities and is particularly important for pioneer species like sea-buckthorn (Hippophaë rhamnoides L.) which survival strongly depends on colonizing newly created post-disturbance habitats. Sea-buckthorn, a cluster-forming shrub, is commonly used in Poland in the reclamation of soil-less areas devastated the by mining industry and for these areas a generative expansion of planted populations is usually observed. The main objective of this study was to assess the long-distance dispersal of this species in areas previously disturbed by industrial activity. Our observations were made on a 223.75 ha large section of the internal waste heap of the Bełchatów lignite mine, Central Poland. The area was colonized by sea-buckthorn specimens originating from a population planted on the nearby external waste heap. During the search for newly established sea-buckthorn clusters, their position and size were recorded and the preferences for specific site conditions were assessed using the Ivlev's electivity index. New specimen were observed at distances between 600 m and 3600 m from their potential seed source. The mean cluster density was 1.37 ha-1. The observed pattern of long distance dispersal is linked with to behavior of frugivorous birds. The largest cluster densities were observed along ditches (9.83 ha-1) and on open areas with less developed plant cover, while the lowest cluster density occurred in afforested areas (0.51 ha-1). Poor sandy substrate reduced the probability of plant establishment compared to richer loamy sands. There appeared to be no influence of slope aspect on the probability of sea-buckthorn establishment.
Źródło:
Leśne Prace Badawcze; 2018, 79, 1
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmienność przestrzenna i czasowa opadu bukwi na podstawie obserwacji w Babiogórskim i Ojcowskim Parku Narodowym
Spatial and temporal variation in seed fall of beech in the Babia Góra and Ojców National Parks
Autorzy:
Skrzydłowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/1026403.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zmiennosc czasowa
buk zwyczajny
zmiennosc przestrzenna
produkcja nasienna
Babiogorski Park Narodowy
lesnictwo
Fagus sylvatica
Ojcowski Park Narodowy
drzewa lesne
fagus sylvatica
seed production
seed dispersal
seed viability
Opis:
Spatial and temporal pattern of seed fall of beech was examined in the subalpine and upland natural forests with prevailing beech. The obtained results point to several regularities associated with seed density, fraction of full seeds in the seedlot, date of seeding and constant of the spatial pattern of beech seed fall.
Źródło:
Sylwan; 2003, 147, 06; 79-86
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anomalie temperatury powietrza w Lasach Doświadczalnych SGGW w Rogowie w latach 1924–2015
Air temperature anomalies in experimental forests in Rogow in 1924–2015
Autorzy:
Chojnacka-Ożga, L.
Ożga, W.
Powiązania:
https://bibliotekanauki.pl/articles/1292182.pdf
Data publikacji:
2018
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
meteorologia
lasy
pomiary meteorologiczne
pomiary temperatury
temperatura powietrza
anomalie termiczne
zmiany temperatury
lata 1924-2015
Lasy Doswiadczalne SGGW w Rogowie
long distance dispersal
sea-buckthorn
soil conditions
slope aspect
Opis:
Long distance dispersal is a key process occurring in plant communities and is particularly important for pioneer species like sea-buckthorn (Hippophaë rhamnoides L.) which survival strongly depends on colonizing newly created post-disturbance habitats. Sea-buckthorn, a cluster-forming shrub, is commonly used in Poland in the reclamation of soil-less areas devastated the by mining industry and for these areas a generative expansion of planted populations is usually observed. The main objective of this study was to assess the long-distance dispersal of this species in areas previously disturbed by industrial activity. Our observations were made on a 223.75 ha large section of the internal waste heap of the Bełchatów lignite mine, Central Poland. The area was colonized by sea-buckthorn specimens originating from a population planted on the nearby external waste heap. During the search for newly established sea-buckthorn clusters, their position and size were recorded and the preferences for specific site conditions were assessed using the Ivlev's electivity index. New specimen were observed at distances between 600 m and 3600 m from their potential seed source. The mean cluster density was 1.37 ha-1. The observed pattern of long distance dispersal is linked with to behavior of frugivorous birds. The largest cluster densities were observed along ditches (9.83 ha-1) and on open areas with less developed plant cover, while the lowest cluster density occurred in afforested areas (0.51 ha-1). Poor sandy substrate reduced the probability of plant establishment compared to richer loamy sands. There appeared to be no influence of slope aspect on the probability of sea-buckthorn establishment.
Źródło:
Leśne Prace Badawcze; 2018, 79, 1
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zarządzanie miastem z perspektywy planowania i zagospodarowania terenów – wybrane zagadnienia
Autorzy:
Sosnowski, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2148296.pdf
Data publikacji:
2022-11-28
Wydawca:
Uniwersytet Opolski
Tematy:
planowanie i zagospodarowanie przestrzenne
kształtowanie przestrzeni
zarządzanie miastem
instrumenty zarządzania miastem
rozpraszanie zabudowy
megaprojekty korporacji
spatial planning and development
space shaping
city management
city management instruments
dispersal of development
large corporate projects
Opis:
Powstanie miast i ich rozrastanie było następstwem rozwoju społeczeństwa, który prowadził do zwiększenia się potrzeb i oczekiwań mieszkańców. Oczywiście były one zróżnicowane na przestrzeni wieków, niemniej jednak mieszkańcy miast oczekiwali podnoszenia poziomu życia. Skutkowało to koniecznością odpowiedniego zarządzania miastem. Zarządzanie, a tym samym zarządzanie miastem jest różnie definiowane. Niezależnie jednak od definicji zarządzania miastem jest to proces prowadzony przez organy miasta, w szczególności przez organ wykonawczy. Ma on prowadzić do zaspokojenia zbiorowych potrzeb wspólnoty samorządowej, co oznacza kształtowanie warunków życia zgodnych z oczekiwaniami mieszkańców i podnoszenie ich na wyższy poziom tam, gdzie one tych oczekiwań nie spełniają. Proces zarządzania miastem nie jest jednak zadaniem łatwym ze względu na bardzo złożoną strukturę społeczną. Jednym z instrumentów go ułatwiających jest planowanie i zagospodarowanie przestrzenne. Celem niniejszego artykułu jest analiza tego, jak kształtowane przez organy miasta były przestrzeń oraz instrumenty, dzięki którym mogły i mogą one obecnie kształtować przestrzeń i warunki życia mieszkańców.
The emergence and growth of cities was a consequence of the development of society, which led to increased needs and expectations of city inhabitants. They obviously varied over the centuries, but city-dwellers expected a higher standard of living. This generated the need for appropriate city management. The management and therefore the city management are defined in various ways. Irrespective of the definition, however, the city management is handled by city authorities, in particular by the executive authority. Its aim is to satisfy collective needs of the local community, i.e., to shape the living conditions meeting city inhabitants’ expectations and to improve them where they do not meet those expectations. However, the city management is not easy due to a very complex social structure. One of the instruments facilitating it is spatial planning and development. The aim of this article is to analyse how the space was shaped by city authorities and discuss the instruments with which they could and can currently shape the space and living conditions for city inhabitants.
Źródło:
Opolskie Studia Administracyjno-Prawne; 2022, 1; 187-210
2658-1922
Pojawia się w:
Opolskie Studia Administracyjno-Prawne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola ptaków w odnawianiu drzew ciężkonasiennych ze szczególnym uwzględnieniem buka Fagus sylvatica L.
The role of birds in natural regeneration of large−seed trees with special reference to beech Fagus sylvatica L.
Autorzy:
Dula, P.S.
Powiązania:
https://bibliotekanauki.pl/articles/1026747.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
ptaki
zoochoria
sojka
botanika lesna
lesnictwo
Sitta europaea
Garrulus glandarius
buk zwyczajny
nasiona
orzechowka
Nucifraga caryocatactes
kowalik
Fagus sylvatica
ekologia
drzewa lesne
seed predation
seed dispersal
birds
natural regeneration
large−seeded trees
beech
coevolution
jay
nutoracker
nuthatch
Opis:
The paper is a brief description of the role of birds in forest tree seed dispersal by synzoochory and seed consumption, as well as ecological consequences of these phenomena. Special attention has been drawn to the way seeds are stored by birds or in other words if the seeds can survive and be able to germinate. An overview of the most recent world literature connected with this subject was presented. An attempt has been made to assess the role of seed – eating birds in the natural forest ecosystem.
Źródło:
Sylwan; 2003, 147, 05; 65-75
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-25 z 25

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