Wyniki wyszukiwania

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Differences in temporal variability and extinction probabilities between species of guilds of parasitic Hymenoptera

100%

Urlich W.

Polskie Pismo Entomologiczne

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2001

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tom 70

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nr 1

2

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Vortsjarv and Lake Saadjarv (Estonia)

84%

Lokko K., Virro T.

Oceanological and Hydrobiological Studies

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2014

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tom 43

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nr 1

3

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A synoptic report on the early winter migrants and resident birds in the coastal wetland of the Marine National Park, Positra, Gujarat

84%

Chatterjee A., Ghosal S., Chakrabarti P.

International Letters of Natural Sciences

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2015

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tom 49

The study is based on the avian community observed in the region. In total, 524 individuals, 27 genera and 35 species of birds belonging to 21 families have been recorded. Among them, the family Charadriidae with 15.08% incidence is the most frequent; immediately followed by the family Scolopacidae (11.26% of occurence). The highest observed species richness has been observed in case of the family Ardeidae. Little Ringed Plover (Charadrius dubius) is the most abundant avian species observed. The community consists of 40% Resident; 40% Resident-migrant and 20% Migrant bird species. It was observed that the concerned community shows a considerable diversity and a corresponding low value of dominance. In the feeding guild analysis, the Insectivore and the Aquatic invertebrate-feeder guilds have the most number of recorded avian species. The feeding guild affiliations also points out that the overall community is fairly rich in its composition as it houses bird species belonging to various feeding guilds.

4

Winter bird communities in a managed mixed oak-pine forest [Niepolomice Forest, Southern Poland]

84%

Skorka P., Wojcik J. D.

Acta Zoologica Cracoviensia

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2003

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tom 46

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nr 1

Winter bird communities in a managed mixed oak-pine forest (Niepołomice Forest, southern Poland) were studied during winters the 1996/1997, 1998/1999, and 2000/2001 using the line-transect method. The transect (9.5 km long, 100 m wide) was conducted through three habitats: forest edge, mature, and young stands. The authors noted 5,764 individuals within the transect belonging to 33 bird species. The largest number of species was noted in mature stands – 27 (mean density: 34.0 inds/10 ha), then at the forest edge – 24 (19.4 inds/10 ha), and 18 species in young stands (25.2 inds/10 ha). The density of birds varied between winters and decreased during their course. The density of plant-eaters was significantly lower than that of invertebrate-eaters, but the total biomass of these groups did not differ. Plant-eater biomass was significantly higher in mature stands and at the forest edge than in young stands. Invertebrate-eater density was considerably lower at the forest edge, but the biomass of this trophic guild did not differ significantly among habitats. Plant-eater biomass was significantly lower during winter 1998/1999 and it is supposed that this variation in plant-eater density affects the most total variation in bird communities in the Niepołomice Forest. The authors’ results indicate that old stands are probably the most favourable habitat for some small birds in winter.

5

Spatial scaling laws and weight dependent distributions in guilds of Diptera and parasitic Hymenoptera

84%

Ulrich W.

Polish Journal of Ecology

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2001

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tom 49

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nr 1

Ograniczanie wyników

1 Acta Zoologica Cracoviensia

1 International Letters of Natural Sciences

1 Oceanological and Hydrobiological Studies

1 Polish Journal of Ecology

1 Polskie Pismo Entomologiczne

1 Chakrabarti P.

1 Chatterjee A.

1 Ghosal S.

1 Lokko K.

1 Skorka P.

1 Ulrich W.

1 Urlich W.

1 Virro T.

1 Wojcik J. D.

1 2015

1 2014

1 2003

2 2001

Differences in temporal variability and extinction probabilities between species of guilds of parasitic Hymenoptera

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Vortsjarv and Lake Saadjarv (Estonia)

A synoptic report on the early winter migrants and resident birds in the coastal wetland of the Marine National Park, Positra, Gujarat

Winter bird communities in a managed mixed oak-pine forest [Niepolomice Forest, Southern Poland]

Spatial scaling laws and weight dependent distributions in guilds of Diptera and parasitic Hymenoptera