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Tytuł:
Ochrona bioróżnorodności Puszczy Białowieskiej w kontekście dynamiki naturalnych i sztucznych zaburzeń
Biodiversity conservation in the Bialowieza Forest in the context of natural and anthropogenic disturbances dynamics
Autorzy:
Hilszczański, J.
Jaworski, T.
Powiązania:
https://bibliotekanauki.pl/articles/985946.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Bialowieska
ochrona bioroznorodnosci
ochrona przyrody
ochrona scisla
ochrona czynna
sukcesja naturalna
diversity conservation
strict protection
active protection
natural succession
intermediate disturbance
hypothesis
Opis:
The paper presents the issue of conservation of species diversity of the Białowieża Forest in the context of both natural and human−related disturbances. These disturbances, in the authors’ opinion, were the main factor that shaped the unique species diversity of this area. Examples of natural disturbances occurring in the Białowieża Forest include the impact of wind, insect outbreaks and, to a lesser extent, fires. On the other hand anthropogenic disturbances are related to various forms of forest use, which historically took place here, i.e. grazing by domestic animals, beekeeping, charcoal production, and recently also forest management. Currently, in the situation of rarity and unpredictability of natural disturbances, as well as due to a significant decrease in human impact on forests of the Białowieża Forest, there is a risk of decrease of biodiversity, which is related to the process of natural succession, homogenization of the forest and the decline of favourable habitats for the development of some organisms. This particularly applies to the so−called ‘open forest’ species that are dependent on sunny places in forests. Historically these species found favourable conditions in the Białowieża Forest in many sites, where traditional forms of forest use took place, but also in areas used for traditional forest management. At present, it is necessary to adapt forest management on the one hand and nature conservation on the other, in order to meet the requirements of diverse groups of organisms, both requiring passive as well as active methods of conservation. The authors postulate the necessity of introducing a diverse conservation strategy in the Białowieża Forest.
Źródło:
Sylwan; 2018, 162, 11; 927-932
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endangered indigenous cattle breeds of Nigeria a case for their conservation and management
Autorzy:
Gwaza, D. S.
Momoh, O. M.
Powiązania:
https://bibliotekanauki.pl/articles/1192705.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cattle-breed
Conservation
endangered
genetic-diversity
Opis:
The Nigeria cattle breeds and their productivity were reviewed. A case was made for their conservation and management, an action plan was also proposed for the Nigerian government. The indigenous cattle breeds of Nigeria have short calving interval, are hardy and trypanotolerant, known for early maturity with low mortality rate for total herd (2% and 4.7% for Muturu and Keteku respectively). The Kuri has high potentials for milk production and can calve up to twelve times in life time. They also have enormous contribution to source of income to many cattle rearers in Nigeria. The indigenous cattle breeds of Nigeria are endangered. The Muturu, N’dama and Keteku are endangered due to extensive uncontrolled crossbreeding with exotic breeds. There is also waning interest among farmers in the use of intact indigenous breeds. The Kuri and Biu cattle breeds are endangered due primarily to environment factors. The civil war also had a significant effect on the elimination of some indigenous cattle breeds especially the forest breeds. The endangered indigenous cattle breed can be conserved by the In-situ techniques. The cost of maintenance of the insitu preservation is often high, but it is to be preferred because it is less technically involving and can be well manage given adequate technologies and funds. The inbreeding effect and maintenance of natural habitat can be reduce by use of appropriate mating system and preservation of the original environment. The live conservation techniques can be organise into park with wild life for revenue generation. Rural farming communities can also be organize to form National indigenous cattle breed ownership Scheme (NICABROS), as a community based conservation management technology are action plans that are propose for insitu conservation of Nigerian endangered cattle breeds.
Źródło:
World Scientific News; 2016, 30; 68-88
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wild bee decline and conservation in North America
Zanikanie i ochrona dzikich pszczół w Ameryce Północnej
Autorzy:
Robinson, Samuel
Cetzal-Ix, William
Basu, Saikat Kumar
Powiązania:
https://bibliotekanauki.pl/articles/2179289.pdf
Data publikacji:
2017-12-31
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
causes of decline
conservation
diversity
wild bee
Opis:
Pszczoły - to niezwykle różnorodna i ważna grupa owadów; około 4600 gatunków pszczół występuje w Ameryce Północnej. Dzikie pszczoły „świadczą usługi” w zakresie zapylania roślin, a ich działalność jest prawdopodobnie nawet więcej warta niż działalność pszczół miodnych na całym świecie. Są one słabo zbadane na większości obszarów, ale na terenach, dla których mamy wiarygodne dane, liczebność ich populacji obniża się. Wynika to głównie z przekształcania obszarów półnaturalnych na grunty rolne, a nowsze dane wskazują również, że pszczoły miodne mogą także wpływać na ich populacje. Aby zachować istniejące populacje pszczół, należy ustalić siedliska zapylaczy, w celu zachowania różnorodności dzikich zapylaczy w krajobrazach wiejskich i miejskich. W miarę jak populacja ludzi rośnie wraz z zapotrzebowaniem na produkcję rolną, musimy znaleźć sposoby „współpracy” z dzikimi zapylaczami i sposoby zachowania dla przyszłych pokoleń tysięcy gatunków pszczół, które żyją w Ameryce Północnej.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2017, 2; 159-169
2543-8832
2545-0999
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variation of arta populations (Calligonum polygonoides subsp. comosum) in Egypt : Genepools for biodiversity and afforestation
Autorzy:
Mahdy, Ehab M.B.
Rizk, Rehab M.
Powiązania:
https://bibliotekanauki.pl/articles/2203540.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
afforestation
biodiversity conservation
Calligonum polygonoides
genetic diversity
Opis:
Genetic diversity manipulates a prime and vital role in the sustainable use of genetic resources. The data highlighted more insights into the genetic diversity of the arta plant (Calligonum polygonoides subsp. comosum) populations collected from three localities, Qalabshu (QQ), Mutubas (MM) and Gamasa (GG), in Egypt as gene pool for biodiversity conservation and afforestation. Random amplified polymorphic DNA (RAPD) markers investigated the population pattern and structure. A total of 129-amplicons oscillated from 145 to 1505 bp and a total of 19-amplicons were specific markers with an average of nine bands for each population. The Shannon index (I) scored at an average of 0.3. The diversity (h) oscillated from 0.11 to 0.25. The similarity matrices based on Jaccard coefficient recorded positive values. A higher correlation (r = 0.83) was between the combined Qalabshu (QQ) and Mutubas (MM) matrices using the Mantel test with 1,000 permutations. This species has higher adaptability for their regions. This gene pool is a valuable reservoir for enriching genetic diversity and provides basal information for the biodiversity conservation of a dominant species. The dominant species can be utilised in afforestation in the same region or another region which has the same environmental conditions.
Źródło:
Journal of Water and Land Development; 2023, 56; 81--90
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conservation of the genetic diversity of local corn (Zea mays L.) in the Yucatan Peninsula, Mexico
Autorzy:
González-Valdivia, Noel A.
Cetzal-Ix, William
Basu, Saikat Kumar
Pérez-Ramírez, Isidra
Martínez-Puc, Jesús F.
Zandi, Peiman
Powiązania:
https://bibliotekanauki.pl/articles/2182157.pdf
Data publikacji:
2016-12-31
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
Campeche
conservation
corn
cultivation
diversity genetic
Mexico
Yucatán
Opis:
The production of native corn at regional level is greatly limited by the seasonality of rainfall, availability of adequate lands, poor fertility status of the soil, high input costs and constraints of resources of the local corn growers and/or producers. The challenges of reduced cultivable area give very little opportunity for increasing production area in a sustainable manner; it is important to note that the soil recover their fertility status through crop rotation and prolonged rest period (> 25 years) known as sequential agroforestry system or "milpa". During 2015, corn collections were performed in the Yucatan Peninsula, Mexico that included five races from the Yucatan (in localities of Nohacal and Peto) and Campeche (Calakmul, Suc-Tuc, Sakabchen, I Chek) states. The races identified were: 1) Nal-Tel (gallito), 2) Dzit Bacal, 3) Xnu’uc Naal (Tuxpeño), 4) Palomero and, 5) Tabloncillo. The local varieties, Pix Cristo (Knees of Christ), Eh Hu (Purple maize) and Chac Chu’ub (Chac´s Blood or Red maize), are included within the Tuxpeño (Xnu´uk Naal) race. The land race of corn that is in imminent danger of extinction is Nal-Tel, characterized by its precocity and ability to escape periods of low rainfall; is important to rescue it for adoption to the practices of local and regional production. The adaptation of this race as a germplasm is important due to its resilience to climate change itself. Palomero, Tabloncillo, Pix Cristo, Chac Chu´ub and Eh Hu can thus be used in traditional food industry, to preserve the traditional knowledge and to provide opportunities for additional income for the local, rural communities. Yellow Palomero and Tabloncillo races are new records of germplasm for the region; and hence essential is exchanging their seeds among local producers and growers.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2016, 1; 71-84
2543-8832
2545-0999
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conservation status and trends in the transformation of Molinia meadows in the Laki w Komborni Natura 2000 site, SE Poland
Stan zachowania i kierunki przemian łąk trzęślicowych na obszarze Natura 2000 Łąki w Komborni (Polska południowo-wschodnia)
Autorzy:
Ziaja, Maria
Wójcik, Tomasz
Wrzesień, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/1628276.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
meadow community
conservation
secondary succession
species diversity
Molinia meadows
Opis:
The aim of this study was to provide a phytosociological and ecological characterization of meadow communities in the Łąki w Komborni Natura 2000 site (SE Poland), assess the trends in their transformation, and indicate the major threats impacting on their conservation. The study was conducted in 2015–2016. Three types of meadow communities were distinguished (alliances Molinion, Arrhenatherion, Filipendulion), due to the absence of the species characteristic for associations. The species richness noted per relevé differed significantly between the types of meadows (Kruskal–Wallis test: H = 21.65, p < 0.05). The highest floristic biodiversity (H' = 2.99) was noted for the meadow patches classified as in the Molinion alliance and the lowest (H' = 2.50) was found for the patches from the Filipendulion alliance. Mean values of the ecological indicators (F, R, N) differed between the meadow communities. The greatest disparity was noted for the mean values of the soil moisture indicator (from 6.42 to 7.45). Patches classified in the Filipendulion alliance were developed on the wettest soil substratum, whereas the patches classified in the Arrhenatherion alliance were predominant on a relatively dry substratum. The abandonment of traditional management practices (grazing, mowing) has contributed to transformation of the Molinia meadows, disappearance of characteristic species and succession of shrubs. The Molinia meadow habitat should be conserved by improvement of protection measures (appropriate mowing regime and removal of biomass) to conserve a high species richness and the rare and protected plant species.
Celem pracy była charakterystyka fitosocjologiczna i ekologiczna zbiorowisk łąkowych na obszarze Natura 2000 Łąki w Komborni (SE Polska) oraz ocena kierunków zmian wraz ze wskazaniem głównych zagrożeń. Badania przeprowadzono w latach 2015–2016. W kompleksie wyróżniono trzy typy zbiorowisk, które ze względu na brak gatunków charakterystycznych dla zespołów oraz znaczne przekształcenia fitocenoz podano w randze związku (Molinion, Arrhenatherion, Filipendulion). Zbiorowiska różniły się bogactwem gatunkowym (H = 21.65, p < 0.05). Najwyższą bioróżnorodność florystyczną (H' = 2.99) miały płaty ze związku Molinion, a najniższą (H' = 2.50) ze związku Filipendulion. Średnie wartości wskaźników ekologicznych (F, R, N) były różne dla wydzielonych zbiorowisk. Największe różnice zanotowano w średnich wartościach wskaźnika wilgotności gleby (od 6.42 do 7.45). Na podłożu najbardziej wilgotnym dominowo zbiorowisko z Filipendulion, a na stosunkowo suchym zbiorowisko z Arrhenaterion. Brak tradycyjnego użytkowania (wypas, koszenie) spowodowało przekształcanie łąk trzęślicowych, zanik gatunków charakterystycznych oraz postępujący proces sukcesji. Z uwagi na duże bogactwo gatunkowe, obecność rzadkich i chronionych taksonów istnieje potrzeba zachowania siedliska łąk trzęślicowych na badanym terenie wraz z koniecznością wprowadzenia zabiegów ochronnych (koszenie, usuwanie biomasy).
Źródło:
Acta Agrobotanica; 2017, 70, 3
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The application of forest sustainable management framework and community participation adjacent to Doi Laung wildlife sanctuary, Thailand
Autorzy:
Khonkaen, P.
Cheng, J.-D.
Powiązania:
https://bibliotekanauki.pl/articles/205082.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conservation activities
forest health
group interview
species diversity
planning management
Opis:
This paper present the data for monitoring forest conditions and forest resource management by a local community adjacent to the Doi Laung Wildlife Sanctuary, Huaimai Sub-district, Song District, Phrae Province, Thailand. This study uses quantitative forest surveys, interviews, discussions, and descriptions of the historical context of public participation in forest management including a detailed assessment of field conditions. The findings of a forest resources inventory show that (1) from the three sampled areas, Doi Laung Wildlife Sanctuary has highest richness, followed by village #16 and #14, and (2) Huaikhon #16 implied the process of framework to maintain a healthy condition and response to community needs with collective management. The conceptual model assessment that links key group indicators and drivers is presented based on previously developed assessment models. The framework focuses on the best way to provide forest management, forest fire prevention, and firefighting as well as monitoring of Check-dam construction and other activities that support the recovery of the forest community. This paper demonstrates the general of an environmental assessment framework to applying organize environmental information to facilitate policy decision making for the sustainable development.
Źródło:
Archives of Environmental Protection; 2017, 43, 1; 87-94
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Changes in Land Use During the 20th Century on Woodland and Calcareous Grassland Vegetation in Southern Poland
Autorzy:
Dzwonko, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/764962.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
literature review
nature conservation
permanent plots
species diversity
vegetation change
Opis:
In the modern agricultural landscape major threats to plant species diversity are loss and fragmentation of habitats and communities. During the last century natural and semi-natural communities have faced also cessation of tradition management and increased load of nutrients. This paper presents a survey of studies on vegetation dynamics of woodlands in the northern part of the Carpathian foothills and of calcareous grasslands on limestone hills near Kraków. The causes of fargoing changes observed in communities of these types and possible management for their conservation are discussed. The nature conservation value of woods can be assessed by means of ancient woodland plant species indicators.
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2011, 7; 27-48
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mitochondrial DNA variability in Gyimesi Racka and Turcana sheep breeds
Autorzy:
Kusza, Szilvia
Zakar, Erika
Budai, Csilla
Cziszter, Ludovic-Toma
Padeanu, Ioan
Gavojdian, Dinu
Powiązania:
https://bibliotekanauki.pl/articles/1039104.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
farm animal conservation
genetic diversity
mtDNA
trans-boundary breeds
Zackel group
Opis:
The current knowledge and documentation on the origins and relationship between Gyimesi Racka reared in Hungary and the Romanian Turcana is rather controversial. Lack of information and scientific reliable proofs for the divergent theories found in the two countries motivated us to implement a trial using molecular methods to assess the genetic distance and diversity in the two breeds. Hair follicles were collected from Gyimesi Racka (2 phenotypes) and from Turcana (6 ecotypes). The 599 bp segment of the D-loop region of the mitochondrial DNA was sequenced. Altogether, 42 haplotypes were identified, while 23 were found in both populations. Populations were highly diverse according to the haplotype and nucleotide diversity indices. AMOVA analysis showed that most of the variation was observed within populations (98%), indicating a weak genetic structure between the two breeds. Animals were grouped into seven groups based on their phenotype; however genetic distances among them were also low. Tajima's D, Fu's Fs, goodness-of-fit statistics, mismatch distribution and network analysis suggested recent demographic expansion. Current comprehensive mtDNA study indicates that there is very low level of genetic differentiation between the Gyimesi Racka and Turcana populations therefore they are de facto one trans-boundary breed.
Źródło:
Acta Biochimica Polonica; 2015, 62, 2; 273-280
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Habitat preference and resource utilization of avifauna in Kuldiha Wildlife Sanctuary, Odisha, India: Role of eco-ethological gradients
Autorzy:
Ghosh, Srinjana
Paria, Santu
Mardaraj, Prakash Chandra
Chakraborty, Susanta Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1177424.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Avifaunal diversity
Conservation
Foraging guilds
Kuldiha Wildlife Sanctuary (KWS)
Tropical deciduous forest
Opis:
The present study has attempted to highlight the avifaunal diversity in two contrasting seasons (pre and post monsoons) from a protected tropical mixed deciduous forest (Kuldiha Wildlife Sanctuary, KWS) in the state of Odisha, India. Through modified line transect method, a total of 107 species of birds belonging to 49 families under 15 orders have been reported. Among them, 12 are winter visitors, 3 are summer visitors, 1 is near threatened and 1 is vulnerable species. Insectivores and frugivores constitute major foraging guilds. Closed canopy forests, forest edges, woodland areas and wetlands provide suitable habitats to all those avifauna. Lower canopy level was found to act as the major microhabitat for several species for meeting major ecobiological attributes of avifauna. The pre-monsoon and monsoon periods have appeared to be the ideal nesting seasons for most of the avian members. Canopy foliage and tree holes were seen to offer the most suitable nesting sites. Significant differences in respect of species richness have been observed among different habitats in different seasons (F5.91 ,p ≤ 0 in premonsoon, F6.53, p ≤ 0 in post monsoon). The highest Shannon Weiner diversity index (H′) was recorded from the forest edge (3.8) during premonsoon and that of lowest in orchard or plantation areas (2.96) during post monsoon. Species Dominance value (D) was observed to be highest both for grassland and orchards and plantation areas (0.06). The field based study attempts to assess avian diversity (qualitative and quantitative) in the light of global conservation programme. Though this area is prone to varying levels of anthropogenic interventions particularly the tourism activities, an overall healthy bird diversity has been found to exist, the knowledge on which is expected to be utilized for the holistic eco-management of forest ecosystem in general and Kuldiha wildlife sanctuary in particular. A number of hypothesis have been proposed in respect of avifaunal habitat selection, diversity and acclimation with wildlife friendly human association for their successful coexistence.
Źródło:
World Scientific News; 2018, 103; 32-64
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Macrofungi of wooded patches in the agricultural landscape. I. Species diversity
Grzyby wielkoowocnikowe zadrzewien srodpolnych w krajobrazie rolniczym. I. Roznorodnosc gatunkowa
Autorzy:
Kujawa, A
Powiązania:
https://bibliotekanauki.pl/articles/67311.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
macrofungi
wooded patch
agricultural landscape
species diversity
tree
nature conservation
fungi community
Opis:
This article begins a four-part series, which presents the results of mycological research carried out in 2000-2007 in the agricultural landscape of the General Dezydery Chłapowski Landscape Park. This part includes description of the study area and field research methods, as well as a list and localities of 617 macrofungal taxa recorded in the Park. The next parts of this series will deal with: species that are rare, protected by law or recorded for the first time in Poland; the role of wooded patches for preservation of fungal diversity in the agricultural landscape; and changes in species diversity and structure of fungal communities in forest communities under strong human pressure.
Powyższy artykuł jest pierwszym z serii czterech artykułów prezentujących wyniki badań nad grzybami wielkoowocnikowymi przeprowadzonych w krajobrazie rolniczym Wielkopolski. W latach 2000-2007 badano różnorodność gatunkową grzybów wielkoowocnikowych zadrzewień śródpolnych, parków wiejskich i lasów gospodarczych w Parku Krajobrazowym im. gen. Dezyderego Chłapowskiego. Przez trzy lata badania prowadzono na 50 stałych powierzchniach. Przez cały okres badań zbierano też grzyby poza stałymi powierzchniami. Stwierdzono występowanie 569 taksonów macromycetes, a po uwzględnieniu nielicznych danych z literatury liczba znanych taksonów z tego terenu wynosi 615. W pierwszym artykule zawarto opis terenu badań oraz wykaz gatunków i ich lokalizację. Kolejne artykuły będą dotyczyły: gatunków chronionych, rzadkich oraz stwierdzonych w Polsce po raz pierwszy,• roli zbiorowisk drzewiastych w ochronie różnorodności gatunkowej grzybów wielkoowoc• nikowych w krajobrazie rolniczym, zmian w różnorodności gatunkowej i strukturze zbiorowisk grzybów w zbiorowiskach le• śnych będących pod wpływem silnej antropopresji.
Źródło:
Acta Mycologica; 2009, 44, 1; 49-75
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Threats and state of conservation of aphyllophoroid fungi in the Mediterranean
Autorzy:
Gorjon, S.P.
Bernicchia, A.
Powiązania:
https://bibliotekanauki.pl/articles/66948.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
threat
conservation
fungi
corticioid fungi
diversity
aphyllophoroid fungi
Mediterranean area
fungi colonizing wood
Opis:
Aphyllophoroid fungi is an artificial and diverse group of fungi, often little considered in mycological inventories, but very important in the forest dynamics. In this paper we summarize generally some of the most relevant and interesting habitats in the Mediterranean for this group of fungi, and briefly analyze the conservation problematics.
Źródło:
Acta Mycologica; 2013, 48, 2
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity of North African Thymus algeriensis in Tunisia: Population structure and implication for conservation
Autorzy:
Ben El Hadj Ali, I.
Guetat, A.
Boussaid, M.
Powiązania:
https://bibliotekanauki.pl/articles/41188.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
genetic diversity
North Africa
Thymus algeriensis
Tunisia
population structure
molecular marker
natural population
conservation
Opis:
The genetic diversity within and among nine natural populations of Thymus hirtus Willd. subsp. algeriensis (Boiss. et Reut.) Murb. from different geographical and bioclimatic zones were assessed using Random Amplified Polymorphic DNA data. A total of 154 bands were generated from seven selected primers. 141 bands were polymorphic (P=91.56%). The genetic diversity within a population based on Shannon's index which was high (H'pop=0.307) and varied according to bioclimatic zones. A high genetic differentiation among populations (GST=0.335 and FST=0.296) was revealed, suggesting a population isolation and a low level of gene flow among them. The major proportion of the variation was attributable to individual differences within populations. The genetic structure is in accordance with geography distances. The Neighbour- joining tree based on Nei's and Li's genetic distance among individuals showed that individuals from each population clustered together. The UPGMA dendrogram based on FST values revealed three clusters each of them includes populations closuring to their geographical origin. The high genetic structure of populations resulted from genetic drift caused both by the habitat fragmentation and the low size of most populations. The in situ conservation should interest all populations. The ex situ conservation should be based on the collection of seeds rather within than among populations because of the maximum of variation was revealed within populations.
Źródło:
Dendrobiology; 2012, 67
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Butterflies fauna biodiversity in the post-mining landscape
Biologiczna różnorodność fauny motyli na obszarach pogórniczych
Autorzy:
Cermakova, Z.
Pecharova, E.
Martis, M.
Powiązania:
https://bibliotekanauki.pl/articles/349063.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
motyle
ochrona środowiska
zarządzanie krajobrazem
różnorodność i ilość
butterflies
conservation
landscape management
diversity and abudance
Opis:
In this research we study butterflies diversity and abundance in North Czech Coal Basin (NCCB) and Landscape protected area Ceske stredohori (LP A). Butterflies are very sensitive species for changes in aricultural management (Denis 2004). They can be used as bioindicators and umbrella species. We study 4 localities - each of them includes 3 study plots. Two localities are situated in LPA and two are situated at dumps of (NCCB). We compare three different succesion stages (low xerotherm grassland, mezophilus grassland, areas with trees and bushes) on two different types of landscape (seminatural biotops x reclamations). In 2009 there were done four observations on each locality and two visits were done in 2010. Higher number of species was found in LPA and also more of rare and endangered species were observed there compare to dumps. Altough dumps seem to be good potential habitats for butterflies. Important for all localities is, if there is an active antropogenic management or not.
W tym badaniu oceniono różnorodność i ilość motyli na terytorium Zagłębia Węglowego Czech Północnych (North Czech Coal Basin, NCCB) oraz obszaru chronionego Ceske stredohori (LPA). Motyle to rząd (owadów) uskrzydlonych bardzo wrażliwy na zmiany w sposobie zarządzania rolnego (Denis 2004). Gatunki motyli mogą być wykorzystywane jako biologiczne wskaźniki. Badamy cztery lokalizacje, z których każda składa się z trzech działek badawczych. Dwie lokalizacje znajdują się w LPA, a dwie pozostałe na zwałowiskach NCCB. Porównujemy trzy różne etapy sukcesji (niskie murawy kserotermiczne, murawy mezofilne, obszary z drzewami i krzewami) w ramach dwóch, odmiennych typów krajobrazu (seminaturalne biotopy x rekultywacja). W 2009 roku dokonano czterech obserwacji w każdej lokalizacji, a w 2010 roku przeprowadzone zostały dwie wizyty. Większa liczba gatunków została zaobserwowana w LPA. Ponadto w porównaniu ze zwałowiskami odkryto tam więcej gatunków rzadkich i zagrożonych. Niemniej zwałowiska wydają się być odpowiednim, potencjalnym siedliskiem dla motyli. Ważne dla wszystkich lokalizacji jest to, czy aktywne zarządzanie antropogeniczne ma miejsce czy nie.
Źródło:
Górnictwo i Geoinżynieria; 2011, 35, 3; 55-61
1732-6702
Pojawia się w:
Górnictwo i Geoinżynieria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An assessment of genetic diversity following natural regeneration of Sorbus torminalis in the Forest District of Jamy (northern Poland)
Autorzy:
Bednorz, L.
Myczko, L.
Kosinski, P.
Powiązania:
https://bibliotekanauki.pl/articles/41322.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
assessment
genetic diversity
natural regeneration
Sorbus torminalis
conservation
wild service tree
Forest District Jamy
Polska
Opis:
The subject of the study was a population of Sorbus torminalis resulting from spontaneous regeneration from seeds in northern Poland at the north-eastern limit of the species distribution. The population, occupying a fenced plot of 1.72 ha in the Forest District of Jamy, amounted to 579 individuals of variable age classes up to about 19 years old. Six polymorphic gene loci: MDH-B, ME-A, 6PGD-B, ADH-B, PGM-A, PGM-B were studied in 532 individuals recruited post-fencing and 21 potentially parental, adult trees. The analysis showed similarly high levels of genetic diversity within both subsets of individuals but there was also a noticeable change in genetic structure between them. Detailed genetic analysis of the post-fencing recruits revealed lack of significant differences between different age groups based on DBH within the fenced plot.
Źródło:
Dendrobiology; 2015, 73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 24

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