Wyniki wyszukiwania

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Effects of habitat fragmentation and forest management on the distribution of the edible dormouse Glis glis

100%

Capizzi D., Battistini M., Amori G.

Acta Theriologica

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2003

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tom 48

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nr 3

The factors influencing the presence/absence of the edible dormouse Glis glis (Linnaeus, 1766) in forest fragments in Mediterranean central Italy were investigated by performing repeated nocturnal surveys in 38 woodlots. The various woodlots were different from each other in terms of area, degree of isolation, and floristic and structural characteristics. The effects of different types of forest management and human activities on dormouse distribution were also analysed. Dormice occurred in all the surveyed high forests, while no sign of their presence was detected in coppices with a rotation cycle short (<18 years). There were significant differences between coppices and high forests, but not between grazed and ungrazed woodlots, and rotational and non-rotational forests. Correspondence analysis corroborated the empirical evidence, showing a close association between presence of dormice and high forests, and, to a lesser degree, rotational forests. Concerning environmental parameters, favourable woods were those with high trees and with low stem number, while the specific tree assemblages proved to be scarcely important. Wood area was more important than isolation in predicting presence or absence of this rodent, as the highest probability was associated with woodlots of 40-50 ha area and more. These results did not provide evidences about the importance of the amount of residual habitat in the 10 km2 surrounding the woodlot and the presence of hedgerows as ecological corridors.

2

Demography of woodland rodents in fragmented habitat

100%

Rajska-Jurgiel E.

Acta Theriologica

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1992

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tom 37

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nr 1-2

Populations of two species of woodland rodents were studied: Apodemus flavicollis (A. f.) and Clethrionomys glareolus (C. g.)t inhabiting a set of small wood patches, isolated from large, continuous forest. The species composition, density and population dynamics differed from those in the forest. The rodents used the entire area as a patchy habitat, moving between the woodlots. In the breeding season high mobility caused higher mortality among males, especially in C. g. Sex ratio in C. g. was female biased. In A. f. females prevailed in spring whereas there was a prevalence of males in autumn. Seasonal changes in age structure followed different patterns in females and males. Males prevailed in first spring litters in both species. Males also prevailed among numerous immigrants of A. f. but females prevailed among immigrants of C. g. The demographic processes in these species resulted from habitat fragmentation and different life strategies.

3

Spatial dynamics of fragmented root vole [Microtus oeconomus] populations: preliminary results

100%

Bergers P. J. M., Van Apeldoorn R. C., Bussink H.

Polish Ecological Studies

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1994

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tom 20

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nr 3-4

4

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Low level of genetic variation within Melica transsilvanica populations from the Krakow-Czestochowa Upland and the Pieniny Mts revealed by AFLPs analysis

84%

Szczepaniak M., Cieslak E.

Acta Societatis Botanicorum Poloniae

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2007

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tom 76

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nr 4

321-331

Fragmented distribution, the breeding system and effects of genetic drift in small-size populations occurring at edge of the species range play an important role in shaping genetic diversity of such a species. Melica transsilvanica is a plant rare in the flora of Poland, where it reaches the northern limit of its continuous range. Amplified Fragment Length Polymorphism (AFLP) DNA profiling method was applied to measure genetic diversity among and within populations of M. transsilvanica. Additionally, genetic relationships between M. transsilvanica and Melica ciliata, two closely related species, were explored. A total of 68 plants from 7 populations of M. transsilvanica and 24 plants from 2 populations of M. ciliata, collected in Poland and outside it, were analyzed. Using 294 AFLP fragments from 3 primer combinations, accessions were grouped into two major clusters associating with M. ciliata and M. transsilvanica, respectively. Further, two subclusters, corresponding to the samples collected from the Pieniny Mts and from the Kraków - Częstochowa Upland were clearly distinguished within the M. transsilvanica group. The hierarchical AMOVA exhibited significant genetic distinction between these geographic regions (60.89%, p < 0.001). The obtained results showed that the most genetic diversity resided between the populations of M. transsilvanica (86.03%) while considerably lower genetic variation was found within the populations (13.97%), which is consistent with the results reported for self-plants. The low level of AFLP genetic variation of M. transsilvanica can be caused by the geographic isolation of populations, which preserves the dominant self-mating breeding system of the species. Individual populations of M. transsilvanica are characterized by isolated gene pools differing by a small number of loci.

5

Genetic diversity of wild Thymus capitatus (Lamiaceae) in Tunisia using molecular markers

84%

Ben El Hadj Ali I., Guetat A., Boussaid M.

Dendrobiology

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2012

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tom 68

In Tunisia, Thymus capitatus L. populations are severely destroyed due to deforestation and over-collecting. The species occurs in small scattered populations decreasing progressively in size. Yet, no conservation or improvement programs are attempted to preserve and promote the potential value of this resource. In this work, we assessed the genetic diversity of nine Tunisian populations of Thymus capitatus L. from different bioclimates, using 103 polymorphic randomly amplified polymorphic DNA (RAPD) loci. The analysis of the genetic variation within and among populations is primordial to elaborate conservation and improvement programs. The species showed a low diversity within populations (0.276

6

Carabids (Carabidae, Col.) as an indicator of the environmental quality of areas in the vicinity of highways

84%

Dymitryszyn I., Szyszko J.

Annals of Warsaw Agricultural University. Horticulture (Landscape Architecture)

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2003

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tom 24

7

Biodiversity and habitat assessment of Mount Malindawag, Naawan, Misamis Oriental, Philippines

84%

Castanares E. D., Vedra S. A., Gorospe J. G.

International Letters of Natural Sciences

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2017

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tom 62

Habitat fragmentation results to displacement of inhabiting floral and faunal species. The resulting geographic isolation of various species affect regeneration, genetic flows and recruitment. Hence, a study was conducted in a forested area of Mt. Malindawag in Naawan, Misamis Oriental. Sampling stations were designated at the agro-forest, mid-forest and upper-forest habitat types. Species characterizations were based on DAO 2007-01 and IUCN Red List for conservation status. Results showed highest diversity index of flora at mid-forest while lowest diversity was observed in the agro-forest area. A tree species Canarium racemosum obtained highest Species Importance Value (SIV) at 38.6%, 42% and 30.8%, respectively in the three habitat types. The highest endemicity of flora was at mid-forest with 24% per DAO 2007-01 and 26% per IUCN conservation status. Majority of faunal species were birds that were mostly resident and common and were usually observed at upper-forest habitat. The relatively low diversity and endemicity of flora and fauna species could be due to the influx of human population. Various activities undertaken were threatening the inhabiting biodiversity, and therefore, demand immediate protection and conservation measures from formulating policies to increasing awareness of various stakeholders. Future related studies were recommended to increase scientific understanding on the interrelationships of socio-economic and ecological interactions of biodiversity to the inhabiting human population.

8

The effects of habitat fragmentation on populations of three species of small mammals in eastern Kansas

84%

Gaines M. S., Diffendorfer J. E., Foster K., Wray F. P., Holt R. D.

Polish Ecological Studies

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1994

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tom 20

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nr 3-4

9

Identyfikacja funkcji zadrzewień przydrożnych

67%

Kocur-Bera K., Dudzinska M.

Acta Scientiarum Polonorum. Administratio Locorum

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2013

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tom 12

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nr 4

10

Heterogeneity of mollusc communities between and within forest fragments in a much modified floodplain landscape

67%

Kappes H., Sulikowska-Drozd A.

Folia Malacologica

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2016

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tom 24

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nr 1

11

Breeding bird communities in relation to different habitat islands

67%

Tworek S.

Nature Conservation

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2001

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tom 58

12

Genetic diversity of leafy liverwort species (Jungermanniidae, Marchantiophyta) in Poland: Regional genetic differentiation of leafy liverworts

59%

Baczkiewicz A.

Biodiversity: Research and Conservation

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2012

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tom 27

13

Wpływ nartostrad stacji narciarskiej Jaworzyna Krynicka S.A. na otaczający drzewostan

59%

Malek S., Waclawek M., Kroczek M., Wieczorek T.

Acta Agraria et Silvestria. Series Silvestris

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2013

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tom 51

Jaworzyna Mountain forests of the law have granted protected status as a spa forests and forests in protected zones around the spas, as well as protective forests intakes and sources of water. In addition, forests are located in the Natura 2000 site "Popradzka refuge" and the Poprad Landscape Park. As part of the 24 sample plots laid out. The aim of the study is to determine the effect of runs No. I, II and IV of the ski station Jaworzyna Krynicka SA of the surrounding stand. Performed on them, inter alia, assess damage to trees, an assessment of the X-rays of trees, an assessment of the damage to the tree canopy deciduous beech mainly by Roloff classification It was noticed a significant: change in the number of trees in the areas of research; changes in the species composition; large variation in the abundance of forest stands; increase in X-ray conifer crowns; an increase in damage to the crowns of beech in all areas of research; — inventoried damage is primarily shallow wounds and abrasion bark — wounds on trees can also be a place of infection fungal pathogens; Edges of slopes and point taken for the gondola should be reforested as soon as possible to create a forest edge.

Ograniczanie wyników

Effects of habitat fragmentation and forest management on the distribution of the edible dormouse Glis glis

Demography of woodland rodents in fragmented habitat

Spatial dynamics of fragmented root vole [Microtus oeconomus] populations: preliminary results

Low level of genetic variation within Melica transsilvanica populations from the Krakow-Czestochowa Upland and the Pieniny Mts revealed by AFLPs analysis

Genetic diversity of wild Thymus capitatus (Lamiaceae) in Tunisia using molecular markers

Carabids (Carabidae, Col.) as an indicator of the environmental quality of areas in the vicinity of highways

Biodiversity and habitat assessment of Mount Malindawag, Naawan, Misamis Oriental, Philippines

The effects of habitat fragmentation on populations of three species of small mammals in eastern Kansas

Identyfikacja funkcji zadrzewień przydrożnych

Heterogeneity of mollusc communities between and within forest fragments in a much modified floodplain landscape

Breeding bird communities in relation to different habitat islands

Genetic diversity of leafy liverwort species (Jungermanniidae, Marchantiophyta) in Poland: Regional genetic differentiation of leafy liverworts

Wpływ nartostrad stacji narciarskiej Jaworzyna Krynicka S.A. na otaczający drzewostan