Wyniki wyszukiwania

1

Threats to the ichthyofauna of the Magurski National Park and its surroundings

100%

Kukula K.

Archives of Polish Fisheries

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2002

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tom 10

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nr 1

Fifteen sites were selected in the upper Wisłoka River drainage basin. Twelve species were recorded. In terms of abundance the dominant species in the material collected were Phoxinus phoxinus (L.), Leuciscus cephalus (L.) and Barbus peloponnesius Val. P. phoxinus clearly dominated in the smallest streams and there were significant local contributions of Salmo trutta m. fario L. to the fish biomass. In the larger streams, the minnow contribution decreased while chub and spotted barbel dominated in the biomass. Spirlin Alburnoides bipunctatus (Bloch) was also relatively abundant. Among the trout caught, relatively small specimens dominated. Poaching was most probably responsible for the lack of larger specimens in the samples. The small impoundment on the Wisłoka River and changes in stream beds caused by gravel exploitation, regulation and forestry management works also had an adverse impact on the ichthyofauna of the studied basin.

2

Habitat selection and the change in distribution of Asian elephants in Mengyang Protected Area, Yunnan, China

67%

Lin L., Feng L., Pan W., Guo X., Zhao J., Luo A., Zhang L.

Acta Theriologica

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2008

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tom 53

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nr 4

Elephants were confined to Mengyang Protected Area in China and their distribution range had reduced greatly compared to past records. A preliminary study of habitat selection by Asian elephantsElephas maximus Linnaeus, 1758 and their distribution was conducted in Mengyang Protected Area and its surrounds using site visits and transect surveys from July 2003 to December 2006. Although no variable significantly influenced their habitat selection, elephants still showed preference for altitudes between 900 and 1200 m, gradients <30°, and orientations to the south-east, south and south-west. Human activities, including habitat transformation and degradation, disturbance by large infrastructure and poaching were considered to be the main factors inducing elephant distribution changes.

3

Structural changes in the ichthyofauna of the Carpathian tributaries of the River Vistula caused by anthropogenic factors

59%

Kukula K.

Supplementa ad Acta Hydrobiologica

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2003

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tom 04

Ograniczanie wyników

1 Acta Theriologica

1 Archives of Polish Fisheries

1 Supplementa ad Acta Hydrobiologica

2 Kukula K.

1 Feng L.

1 Guo X.

1 Lin L.

1 Luo A.

1 Pan W.

1 Zhang L.

1 Zhao J.

1 2008

1 2003

1 2002

Threats to the ichthyofauna of the Magurski National Park and its surroundings

Habitat selection and the change in distribution of Asian elephants in Mengyang Protected Area, Yunnan, China

Structural changes in the ichthyofauna of the Carpathian tributaries of the River Vistula caused by anthropogenic factors