Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: habitat loss

Sortuj według:

Ogranicz wyniki do:

Effect od patch size on habitat loss in sedge warblers Agrocephalus schoenobaenus in the Middle Nida Wetlands [southern Poland]

100%

Bielanski W., Solarz W., Zajac T.

Nature Conservation

2005

tom 61

43-51

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Salix myrtilloides in north central Poland. Distribution, threats and conservation

100%

Churski M., Danielewicz W.

Dendrobiology

2008

tom 60

3-9

Present status of a postglacial relict – Salix myrtilloides L. was investigated in north central Poland at 27 localities. Consequently 3 sites were confirmed, 4 were not confirmed, and the remaining 20 were considered to be extinct. In comparison to the historical distribution, ca. 74% of the sites existing 50 years ago do not exist today in the studied region. The confirmed populations were found near Oporówek (ca. 1600 stems), Rakowiec (ca. 100) and Bobrowo (15). At three sites confirmed in this study, the existence of vigorous hybrids between S. myrtilloides and S. aurita L. (S. ×onusta Besser) were observed. The most important threats to Salix myrtilloides L. populations in the studied region were assessed to be hybridization with other commonly occurring willow species, site isolation and habitat destruction. Natural habitat protection with adequate buffer zone and gene pool protection in a form of plantations was suggested as a conservation strategy. As an alternative strategy active protection ‘insitu’ was proposed based on cutting competitive common species of willows.

Poland and the United States' cooperation in fisheries ecology: A multidecadal retrospective

100%

Ejsmont L., Sherman K.

Bulletin of the Sea Fisheries Institute

2000

nr 3

Ograniczanie wyników

1 Bulletin of the Sea Fisheries Institute

1 Dendrobiology

1 Nature Conservation

1 Bielanski W.

1 Churski M.

1 Danielewicz W.

1 Ejsmont L.

1 Sherman K.

1 Solarz W.

1 Zajac T.

1 2008

1 2005

1 2000

Wyniki wyszukiwania

Effect od patch size on habitat loss in sedge warblers Agrocephalus schoenobaenus in the Middle Nida Wetlands [southern Poland]

Salix myrtilloides in north central Poland. Distribution, threats and conservation

Poland and the United States' cooperation in fisheries ecology: A multidecadal retrospective