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Wyszukujesz frazę "Species Diversity" wg kryterium: Temat


Tytuł:
Plant communities in drainage ditches – conditions, characteristics and environmental functions
Autorzy:
Kiryluk, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/2141487.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
habitat
invasive species
valley ecosystems
diversity of flora
environmental valorization
Opis:
Ditches and drainage canals are an important element in the post-bog meadows. Their basic function is to regulate air-water relations in ecosystems, mainly in agrocenoses. The environmental functions of ditches and canals consist of maintaining a large diversity of flora and fauna species due to high humidity of these ecosystems. The study of plant communities in the ditches in the post-bog meadows habitat of the Supraśl Dolna valley structure in 2010–2020 was carried out. There were 23–27 species of plants in the ditches. Species diversity did not change significantly during this period, while changes in individual species’ coverage and viability were found. The species were classified into two rush communities: reed rush (Phragmitetum australis) and rush (Phalaridetum arundinaceae). As a result of the lack of maintenance of the ditches, an invasive species of flapped barbed (Echinocystis lobata) was found. The natural valorization carried out by the Oświt method showed that plant communities in the drainage ditches are in the lowest valorization classes.
Źródło:
Studia Quaternaria; 2022, 39, 1; 31-40
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations
Autorzy:
Dąbrowska, Grażyna B.
Dąbrowski, Henryk P.
Szyp-Borowska, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/2041027.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
dwarf birch
RAPD
population
relict species
genetic diversity
Opis:
The natural range of the dwarf birch (Betula nana L.) includes the boreal, subarctic and arctic regions of Europe, Asia and North America, where it is relatively common. In Poland, it is a relict species occurring in fragmented populations. Using the random amplification of polymorphic DNA (RAPD) technique, we investigated the genetic diversity of the four Swedish populations representing a part of the continuous range of dwarf birch. With the knowledge of the level of genetic diversity of a population from a continuous distribution, we can assess the genetic status of polish populations and answer the question if habitat fragmentation and a decrease in population size lead to a loss in genetic diversity. Knowledge of genetic diversity is important for species conservation, especially to predict their ability to respond to environmental pressures. We found that the populations Abisko, Malbo, Gällivare and Storlien, which are located at the edge of the natural range of B. nana and occupy different habitats, are genetically diverse to varying degrees. The northern populations from Abisko and Gällivare showed a lower level of genetic polymorphism than the population from Malbo, the southernmost site of dwarf birch in Sweden. The data presented indicate higher genetic diversity existed within populations, whereas genetic differentiation between populations was lower. The high level of genetic differentiation within B. nana populations that were analysed in the present study may be explained by a limited capacity for dispersal among populations via both pollen and seeds. We found that the level of genetic diversity in one of the Polish populations of B. nana is comparable to that in areas in Scandinavia where populations are large and continuous. Based on these studies, we conclude that the “Linje” population has sufficient genetic resources.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 225-231
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Promoting Biodiversity: Vegetation in a Model Small Park Located in the Research and Educational Centre
Autorzy:
Winkler, Jan
Jeznach, Jerzy
Koda, Eugeniusz
Sas, Wojciech
Mazur, Łukasz
Vaverková, Magdalena Daria
Powiązania:
https://bibliotekanauki.pl/articles/2025728.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
urban greenery
locality
diversity of plant species
invasive plant species
localities created by humans
Opis:
University campuses, as important elements of urban greenery, are related with a positive impact on student health and well-being. They provide unique possibilities for estimating biodiversity change. This study focused on the biodiversity in the Campus. The study aimed at: assessing the plant biodiversity occurring in the park; assessing the representation of native species and determining the frequency at which invasive species occur; as well as recommending an adaptation of the park management. The Park was sub-divided into biotopes and a phytocoenological relevé was recorded. Park projects create biodiversity islands that may contribute to improve urban space. A species composition that is close to natural vegetation creates a space for native species, which thus better adapt to living in urban conditions. Localities created by humans, which imitate natural ecosystems, increase the biodiversity and are valuable natural islands in cities. The semi-natural phytocoenoses however, do not resist the occurrence of invasive plant species. Regarding the small size of the studied park, manual elimination or cutting of invasive plant species is sufficient.
Źródło:
Journal of Ecological Engineering; 2022, 23, 1; 146-157
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Species composition and structure of the nematode communities of epiphytic mosses in the Left-bank Polesie (Ukraine)
Autorzy:
Shevchenko, Valentyna
Zhylina, Tetiana
Powiązania:
https://bibliotekanauki.pl/articles/2026002.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
species diversity
nematodes
frequency of occurrence
epiphytic mosses
Left-bank Polesie
Opis:
Species and generic composition of nematode communities from the epiphytic mosses in the Left-bank Polesie were studied. Nematodes were extracted by a modified Baermann’s method. A total of 47 species was found and they belonged to 34 genera, 21 families and 8 orders. The average number of nematodes was 4077 per 100 g of the moss. Rhabditida, Tylenchida, Plectida and Dorylaimida composed had more species richness (12, 10, 8 and 7 species, respectively). Species of these four orders comprised 78.7%. Representatives of three order Plectida, Dorylaimida and Monhysterida were the most numerous within the considered communities (proportion in the communities were 40.75, 21.30 and 18.65%, respectively). The majority of the identified species were subrecedent (31 or 65.95% of species composition) and accidental species (37 or 78.72%). Three species: Plectus parietinus Bastian, 1865, Mesodorylaimus bastiani Bütschli, 1873 and Geomonhystera villosa Bütschli, 1873 composed the core of nematode communities from epiphytic mosses in the Left-bank Polesie. They were found in 70.21, 57.45 and 53.19% of the samples, proportion in the community of 15.21, 10.03 and 17.96%, respectively.
Źródło:
Studia Quaternaria; 2021, 38, 2; 143-148
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The myxobiota of the Łagiewnicki Forest in Łódź (Central Poland)
Autorzy:
Salamaga, Agnieszka Maria
Powiązania:
https://bibliotekanauki.pl/articles/11543453.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Amoebozoa
slime molds
myxomycete diversity
myxomycete ecological groups
myxomycete phenology
red-listed species
“Las Łagiewnicki” forest reserve
Opis:
Herein, the results of studies conducted in the Łagiewnicki Forest in the city of Łódź (central Poland) in 2010–2012 are presented. These were the first long-term observations into myxomycetes in the Łagiewnicki Forest and in central Poland. Investigations were conducted using the route method for the entire forest complex (2010–2012). Additionally, twelve logs were selected in the “Las Łagiewnicki” forest reserve for detailed observations in 2011–2012; these logs belonged to four tree species: Betula pendula Roth, Carpinus betulus L., Quercus sp., and Picea abies (L.) H. Karst. In total, 1,561 specimens were collected and were classified into 96 taxa (91 species and five varieties). Three species (Diderma saundersii, Oligonema flavidum, and Didymium eximium) are new to the biota of Poland, while five (Arcyria stipata, Hemitrichia calyculata, Oligonema schweinitzii, Physarum flavicomum, and Physarum robustum) are included on the red list of rare myxomycetes in Poland. Stemonitopsis amoena is also classified as a rare species; to date, this species has been reported in one locality in Poland. The scale by Stephenson et al. was used to determine the frequency of occurrence of individual taxa; 55 taxa were classified as rare, nine as sporadic, 26 as common, and six as abundant taxa. Three ecological groups of slime molds were identified based on the type of substrate they colonized: lignicolous (54 taxa), foliicolous (seven taxa), and corticolous (two taxa). No preference for the substrate was noticed in a group of 33 taxa that occurred on different substrate types. The phenology of myxomycete occurrence was also analyzed; 49 taxa occurred throughout the entire vegetative season, while only single records of species that were found in specific months were noted. The biota collected in the “Las Łagiewnicki” forest reserve and that in a Łagiewnicki Forest segment outside it (of the same size and the same occurrence of plant communities as in the reserve) in 2011–2012 were also compared.
Źródło:
Acta Mycologica; 2021, 56, 1; 561
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The vascular flora ecological diversity in the mid-field woodlots situated on the agricultural outskirts of Wroclaw
Autorzy:
Fudali, E.
Podlaska, M.
Koszelnik-Leszek, A.
Powiązania:
https://bibliotekanauki.pl/articles/29433278.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
vascular flora
ecological diversity
midfield woodlot
Wroclaw city
marginal habitat
bryophyte
plant species
flora
agricultural land
Lower Silesian region
Źródło:
Steciana; 2021, 25, 1; 3-13
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
18th Congress of European Mycologists Bioblitz 2019 – Naturalists Contribute to the Knowledge of Mycobiota and Lichenobiota of Białowieza Primeval Forest
Autorzy:
Gorczak, Michał
Siedlecki, Igor
Błocka, Zuzanna
Cullen, Maria
Daniele, Inita
Fox, Howard
Harder, Christoffer
Kinnunen, Juha
Kochanowski, Michał
Krisai-Greilhuber, Irmgard
Majchrowska, Maria
Meiere, Diana
Oberhofer, Martina
Schigel, Dmitry
Senn-Irlet, Beatrice
Wiktorowicz, Dorota
Wrzosek, Marta
Pawłowska, Julia
Powiązania:
https://bibliotekanauki.pl/articles/11543370.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
conference
fungal diversity
lichen diversity
endangered species
new species
Bryocentria brongniartii
Tremella coppinsii
Tremella hypocenomycis
Zevadia peroccidentalis
Bialowieza National Park
Opis:
A total of 561 records of 233 species of fungi are reported from the Polish part of Białowieża Forest as a result of a short-term inventory that was conducted during the 18th Congress of European Mycologists (September 18–29, 2019). Four species new to Poland (Bryocentria brongniartii, Tremella coppinsii, T. hypocenomycis, and Zevadia peroccidentalis), and eight species new to Białowieża Primeval Forest (Hypomyces chrysostomus, Hypomyces rosellus, Lachnellula resinaria, Peniophora lycii, Phellinus viticola, Phlebia subochracea, Pronectria anisospora, and Typhula quisquiliaris) were recorded.
Źródło:
Acta Mycologica; 2020, 55, 2; 55211
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Helminth endo-parasites of amphibians from Greame Ama, Okrika, Rivers State, Nigeria
Autorzy:
Amuzie, C.C.
Robert, B.
Ekerette, I.B.
Powiązania:
https://bibliotekanauki.pl/articles/2049688.pdf
Data publikacji:
2020
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
helminth parasite
marine environment
parasite species
new parasite
endoparasite
Nigeria
amphibian diversity
Helminth parasites
Okrika
Opis:
There is only one survey on the species of amphibians and their parasites from Okrika, Rivers State, Nigeria. Therefore, this research was carried out with the intention of exploring the city for more amphibian species and also reporting on the parasites infecting them. Visual acoustic and survey methods were employed in surveying the study location, Greame Ama, for the period of September to November, 2018, and standard parasitological techniques were adopted. In comparison with the earlier research, fewer amphibian species were encountered: Sclerophrys maculata, Hoplobatrachus occipitalis, Ptychadena pumilio and P. mascareniensis. However, new parasite species were found: Diplodiscus fischthalicus, Metahaematoloechus exoterorchis and Cephalochlamys compactus. A higher prevalence of infection (96.6%) was reported here than in the earlier report. Of the nine parasite species reported in this research, three have direct transmission routes (Rhabdias sp., Cosmocerca ornata, Cylindrotaenia jaegerskioeldii), while six (Raillietiella sp., Cephalochlamys compactus, Mesocoelium monodi, D. fischthalicus, Metahaematoloechus exoterorchis and ascaridida larva) are transmitted by ingestion of either insect or gastropod intermediate hosts. However, the most prevalent species were those with direct transmission routes as is common with more terrestrial amphibian species. It is concluded that amphibian diversity in Okrika is low but more parasite species are likely to be reported with more surveys.
Źródło:
Environment, Earth and Ecology; 2020, 4, 1; 31-37
2543-9774
2451-4225
Pojawia się w:
Environment, Earth and Ecology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Macromycetes of the Palace Park in Poznan-Radojewo (Wielkopolska Region, Poland)
Autorzy:
Kujawa, Anna
Gierczyk, Błażej
Kudławiec, Barbara
Stokłosa, Natalia
Bujakiewicz, Anna
Powiązania:
https://bibliotekanauki.pl/articles/11543329.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
rare fungi
species diversity
Psathyrella larga
Psathyrella bipellis
Ischnoderma resinosum
Hericium coralloides
Geastrum fornicatum
Ascotremella faginea
palace park
Poznan-Radojewo Park
Wielkopolska region
Polska
Opis:
This work aimed to present the diversity of fungal species in the Poznań- Radojewo park. It was characterized based on literature data, unpublished master’s theses, the authors’ data, as well as data collected during two mycological trips organized by the Mycological Section of the Polish Botanical Society. Between 1980 and 2017, as many as 333 species of macromycetes have been found within the park in Poznań-Radojewo (among them 19% are rare and endangered), including eight protected species (Mitrophora semilibera, Morchella esculenta (var. esculenta and var. umbrina), Geastrum corollinum, G. fornicatum, Hericium coralloides, and Myriostoma coliforme), as well as two species new to the Polish mycobiota: Psathyrella bipellis and P. larga. The park in Poznań-Radojewo is very important for maintaining a high species diversity of fungi within the city of Poznań. During revitalization works, it is of paramount importance to take the needs of rare, threatened, and protected species under consideration and to preserve the natural character of plant communities. It is also vital to ensure the presence of coarse woody debris at different decomposition phases, which serves as an important substratum type for rare fungi.
Źródło:
Acta Mycologica; 2020, 55, 1; 5513
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mosses and liverworts in the glacier forelands and mature tundra of Svalbard (High Arctic): diversity, ecology, and community composition
Autorzy:
Wietrzyk-Pełka, Paulina
Cykowska-Marzencka, Beata
Maruo, Fumino
Szymański, Wojciech
Węgrzyn, Michał Hubert
Powiązania:
https://bibliotekanauki.pl/articles/2041805.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
bryophytes
cryptogams
plant-soil interactions
species diversity
Źródło:
Polish Polar Research; 2020, 41, 2; 151-175
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Species richness and weed abundance in winter depending on the date of sowing and NPK fertilization
Bogactwo gatunkowe i obfitość chwastów w pszenicy ozimej w zależności od terminu siewu i poziomu nawożenia NPK
Autorzy:
Brzozowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/13925577.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
winter wheat
date of sowing
NPK
weed species diversity
weed density
biomass
pszenica ozima
terminy siewu
roznorodnosc biolgiczna
chwasty
zageszczenie
biomasa
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2020, 602; 3-12
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of earthworms on collembolan (Collembola) communities in grass mono- and polycultures
Wpływ dżdżownic na zespoły skoczogonek (Collembola) w uprawach trawiastych jedno- i wielogatunkowych
Autorzy:
Olejniczak, Izabella
Makulec, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1062634.pdf
Data publikacji:
2020-12-31
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
dżdżownice
skoczogonki
różnorodność gatunkowa
monokultura trawiasta
trawiasta uprawa wielogatunkowa
earthworms
springtails
species diversity
grass monoculture
grass polyculture
Opis:
In 2004-2005, a lysimetric experiment was designed to determine whether and how plant diversity and earthworms could influence diversity and densities of collembolan communities. We compared two types of crops: monoculture of Festuca rubra L. and a polyculture, the mixture of grasses (8 species) commonly used in agriculture. In addition to two plant communities of different diversity, we used in our experiments an engineering species of earthworm – Aporrectodea caliginosa (Sav.). The experiment was initiated in May 2004, when the lysimeters were sown with F. rubra or with a mixture of grasses. The following year, in May 2005, we introduced 6 individuals (that correspond with average densities of 200 ind. m-2 in the natural environment) of A. caliginosa to half of the lysimeters. Soil samples were taken at the depths of 0-5 cm, 5-10 cm, 10-15 cm and 15-20 cm, before introducing earthworms and after 60, 120 and 180 days from introducing earthworms. We found that soil layer (Kruskal-Wallis test: N=432, H=18.25, P=0.0004), biodiversity of grass culture (N=432, H=14.59, P=0.0001) and the period of the season (N=432, H=24.24, P=0.0000) had an important effect on densities of collembolan communities independently of earthworms presence (N=432, H=1.99, P=0.16). We found 18 species of springtails and the number of species decreased with soil layer. The most abundant were Proisotomodes bipunctatus and Isotomodes productus.
W latach 2004-2005 przeprowadzono eksperyment wazonowy, w którym badano wpływ zróznicowania roslinnosci oraz obecności dżdżownic glebowych na zespoły skoczogonek. Porównano dwa typy upraw trawiastych: monokultura kostrzewy czerwonej Festuca rubra L. oraz trawiasta uprawa wielogatunkowa (mieszanka 8 gatunków traw). Ponadto w każdej z upraw zbadano wpływ obecności dżdżownic należących do gatunku Aporrectodea caliginosa (Sav.). W maju 2004 roku doświadczalne wazony obsiano po połowie kostrzewą czerwoną oraz mieszanką traw. W lipcu 2005 roku do połowy wazonów z każdej uprawy wprowadzono dzdzownice, po 6 osobników, co odpowiada średniemu zagęszczeniu 200 osobników na metr kwadratowy w środowisku naturalnym. Próby glebowe pobrano na głębokości: 0-5 cm, 5-10 cm, 10-15 cm i 15-20 cm, przed wprowadzeniem dżdżownic oraz po 60, 120 and 180 dniach od wprowadzenia dżdżownic. Wykazano, że warstwa gleby (test Kruskala-Wallisa: N=432, H=18.25, P=0.0004), róznorodność traw (N=432, H=14.59, P=0.0001) oraz sezon (N=432, H=24.24, P=0.0000) miały istotny wpływ na zagęszczenie zespołów skoczogonek niezależnie od obecności dżdżownic (N=432, H=1.99, P=0.16). Ogółem stwierdzono 18 gatunków skoczogonek, a ich liczebności w wierzchniej warstwie gleby były istotnie wyższe niż w wastwach głębszych. Najliczniej występowały gatunki Proisotomodes bipunctatus i Isotomodes productus.
Źródło:
Studia Ecologiae et Bioethicae; 2020, 18, 5; 283-291
1733-1218
Pojawia się w:
Studia Ecologiae et Bioethicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The zoobenthos structure in the Dniprovske (Zaporizke) reservoir, Ukraine
Autorzy:
Petrovsky, Olexandr
Fedonenko, Olena
Marenkov, Oleh
Powiązania:
https://bibliotekanauki.pl/articles/1031526.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Dniprovske reservoir
species diversity
zoobenthos
Opis:
The article presents data on monitoring the species composition of the zoobenthos of the Dnipro reservoir during 2015-2018. It has been found that a biocenosis of Dreissena (Dreissena bugensis, D polymorpha) was formed on the pass of the upper part of the reservoir on slightly silty sand. The bottom layers of water have been found to be slightly exposed to climatic factors due to slow flow; thus seasonal changes in zoobenthos in the profundal biotope are insignificant.
Źródło:
World News of Natural Sciences; 2020, 32; 87-98
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A faunistic and ecological characterization of the water mites (Acari: Hydrachnidia) of the Branew River (central-eastern Poland)
Autorzy:
Stryjecki, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1386295.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
lotic zone
lentic zone
Lebertia rivulorum
synecological groups
species diversity
anthropo-genic transformation
strefa lotyczna
strefa lenityczna
grupy synekologiczne
przekształcenia antropogeniczne
Opis:
A characteristic feature of the Hydrachnidia communities of the Branew River, distinguishing its fauna from that of other Polish rivers, was the very high abundance of species of the genus Lebertia. Species of this genus accounted for as much as 53.1% of the collected material. The most numerous was Lebertia rivulorum, which was caught in numbers not found in other Polish rivers. Lebertia inaequalis and L. oblonga were also abundant. The largest synecologi-cal groups were rheophiles and rheobionts (94.9% combined). More individuals (1494) and species (27) were caught in the lentic zone of the river than in the lotic zone (1291 ind., 25 sp.). The species most associated with the lotic zone was L. rivulorum. This species was caught mainly on a substrate of gravel and stones with a small amount of sandy sediments, sparsely covered with Elodea canadensis. The species most associated with the lentic zone was Forelia variegator. The most abundant species in the Branew River, Hygrobates setosus, was caught in much higher numbers in the littoral zone than in the central part of the river. The high similarity of fauna was observed between the lotic and lentic zones, and much lower similarity between sites. The results indicate intensive species migration in the transverse profile of the river and low migration in the longitudinal profile. Higher species diversity was recorded in the lentic zone than in the lotic zone of the river – both in the river as a whole and at the individual sites. In the anthropogenically transformed stretch of the river (straightened riverbed, concrete dam, and concrete bottom), species diversity was significantly lower (H’ = 1.83) than in the natural stretch (H’ = 2.37). The results confirm literature data describing the negative impact of such transformations on Hydrachnidia communities. Despite anthropogenic transformations in parts of the river, the structure of the fauna (a very large proportion of rheobionts and rheophiles), as well as the physicochemical parameters of the water, is indicative of the good ecological condition of the river.
Cechą specyficzną zgrupowań Hydrachnidia rzeki Branew, odróżniającą jej faunę od innych rzek Polski, była bardzo duża liczebność gatunków z rodzaju Lebertia. Gatunki z tego rodzaju stanowiły aż 53.1% zebranego materiału. Najliczniejsza była Lebertia rivulorum, którą łowiono w liczebnościach niespotykanych w innych rzekach Polski. Ponadto, w dużych liczebnościach łowiono L. inaequalis i L. oblonga. Najliczniejszymi grupami synekologicznymi były reofile i reobionty (łącznie 94.9%). Więcej osobników (1494) i gatunków (27) złowiono w strefie lenitycznej rzeki niż w strefie lotycznej (1291 osobn., 25 gat.). Gatunkiem najbardziej zwią-zanym ze strefą lotyczną była L. rivulorum. Lebertia rivulorum łowiono przede wszystkim na dnie żwirowo-kamienistym z niewielkim udziałem osadów piaszczystych, skąpo poro-śniętym Elodea canadensis. Gatunkiem najbardziej związanym ze strefą lenityczną była Forelia variegator. Najliczniejszy gatunek w rzece Branew – Hygrobates setosus, łowiono zdecydowanie liczniej w strefie przybrzeżnej, niż w centralnej części rzeki. Stwierdzono duże podobieństwa faun między strefą lotyczną i lenityczną i znacznie mniejsze podobieństwa fau-nistyczne między stanowiskami. Uzyskane wyniki świadczą o intensywnej migracji gatunków w profilu poprzecznym rzeki i słabej migracji w profilu podłużnym. Większą różnorodność gatunkową notowano w strefie lenitycznej, niż lotycznej rzeki – zarówno w skali całej rzeki, jak i na poszczególnych stanowiskach. Na przekształconym antropogenicznie odcinku rzeki (wyprostowane koryto, betonowa zapora, wybetonowane dno) stwierdzono znacznie niższą różnorodność gatunkową (H’ = 1.83) niż na odcinku naturalnym (H’ = 2.37). Uzyskane wyniki potwierdzają dane literaturowe opisujące negatywny wpływ takich przekształceń na zgrupowania Hydrachnidia. Mimo lokalnych przekształceń antropogenicznych, struktura fauny (bardzo duży udział ilościowy reobiontów i reofili), a także wartości wskaźników fizyczno--chemicznych wody, świadczą o dobrym stanie ekologicznym rzeki.
Źródło:
Acta Biologica; 2019, 26; 99-115
2450-8330
2353-3013
Pojawia się w:
Acta Biologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diversity of Vegetation Dominated by Selected Grass Species on Coal-Mine Spoil Heaps in Terms of Reclamation of Post-Industrial Areas
Autorzy:
Błońska, Agnieszka
Kompała-Bąba, Agnieszka
Sierka, Edyta
Bierza, Wojciech
Magurno, Franco
Besenyei, Lynn
Ryś, Karolina
Woźniak, Gabriela
Powiązania:
https://bibliotekanauki.pl/articles/124434.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
grass species
dominants
diversity
biomass
coal-mine spoil heaps
plant community
reclamation
Opis:
Grasses have a considerable potential for the adaptation to various, often extreme, habitat conditions. The aim of the work was to present the vegetation diversity of the coal-mine spoil heaps with the dominant share of grasses and to identify the main factors responsible for this diversity in the aspect of post-industrial land reclamation. The communities differ in reference to the species preferences to light, moisture, soil fertility and reaction, which is reflected in the wide variety of microhabitats in the area. It was shown that the increase in the abundance of certain grass species, including Calamagrostis epigejos, Festuca rubra, Festuca arundinacea, Phragmites australis, has a significant negative impact on the species richness, species diversity and the uniformity of distribution of species of the plant community. Preliminary analyses revealed that on post-mining waste, the biomass production of the dominant species is negatively correlated with biodiversity. The knowledge about the biology and ecology of grass species, as well as on the assembly rules may be used in the reclamation of degraded areas. Gaining the knowledge about the vegetation diversity of the coal-mine spoil heaps with the dominant share of grasses can be useful in planning the reclamation works, taking into account natural processes, which leads to the creation of a permanent vegetation cover at a given site, protecting it against water or wind erosion. In the future these areas may provide a number of important ecosystem services.
Źródło:
Journal of Ecological Engineering; 2019, 20, 2; 209-217
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł

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