Diversity and activity of bird fauna in ephemeral river-created habitats in Amazonia

Breeding bird fauna in a coniferous forest in the northern Prealps after storm Lothar In a 70-hectare large coniferous forest located on the northern edge of the Alps in central Switzerland, Canton of Obwalden, at an altitude of 1260 to 1550 metres above sea level, we surveyed the local breeding bird fauna in 2002 and 2013 by means of point counts as well as additional area searches for rare species. In December 1999, hurricane Lothar caused two large windthrow areas and several smaller areas with scattered throws in the survey range. We found a total of 48 breeding bird species, which is a very diverse species composition for a mountain forest. In the eleven years between surveys, a decline in distribution or abundance was recorded for four species, while seven species showed an increase; a further four species showed no change. For the remaining species, the data sets were too small to reliably estimate changes. A comparison with forest structure data provided by the Swiss Federal Institute of Forest, Snow and Landscape Research WSL revealed that for five bird species, the changes in distribution or abundance could be explained at least partially by forest succession. In order to obtain realistic distribution and abundance values in this kind of breeding bird survey, it is essential to collect large enough samples and to consider the detection probability of each individual species using appropriate statistical methods.

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Origin of the Northeast Atlantic Islands Bird Fauna

Biogeography in the Sub‐Arctic ◽

10.1002/9781118561461.ch10 ◽

2021 ◽

pp. 215-250

Author(s):

Aevar Petersen ◽

Bergur Olsen

Keyword(s):

Northeast Atlantic ◽

Bird Fauna

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Seasonality of forest invertebrates in Hong Kong, South China

Journal of Tropical Ecology ◽

10.1017/s0266467402002419 ◽

2002 ◽

Vol 18 (4) ◽

pp. 637-644 ◽

Cited By ~ 18

Author(s):

Kwok Hon Kai ◽

Richard T. Corlett

Keyword(s):

Hong Kong ◽

Seasonal Changes ◽

Bird Community ◽

Absolute Minimum ◽

Northern Margin ◽

Plant Names ◽

Bird Fauna ◽

Summer Temperatures ◽

Formed Part ◽

The Tropics

Because of its position on the northern margin of the tropics (22° 17′N) and the southern coast of a huge continent, Hong Kong has a climate in which both temperature and rainfall are highly seasonal. Although summer temperatures are equatorial, the January mean is only 15.8 °C,and the absolute minimum recorded at sea level is 0 °C (Dudgeon & Corlett 1994). As a result, all aspects of the ecology of Hong Kong show seasonal changes. The most dramatic changes occur in the bird fauna, with the majority of species migratory (Carey et al. 2001). The winter fruiting peak in secondary shrublands and the forest understorey coincides with the arrival of partially frugivorous migrant robins and thrushes (Corlett 1993). However, while resident insectivore-frugivores consume almost entirely fruit during this period (Corlett 1998), all the winter visitors continue to eat insects and some (e.g. Phylloscopus warblers) are entirely insectivorous. The study of insect seasonality reported here formed part of a 30-mo study of the seasonality of a forest bird community in Hong Kong (Kwok & Corlett 1999, 2000). Plant names follow Corlett et al. (2000).

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Bird communities in three forest types in the Pernambuco Centre of Endemism, Alagoas, Brazil

Iheringia Série Zoologia ◽

10.1590/s0073-47212013000200002 ◽

2013 ◽

Vol 103 (2) ◽

pp. 85-96 ◽

Cited By ~ 5

Author(s):

Lahert W. Lobo-Araújo ◽

Mário T. F. Toledo ◽

Márcio A. Efe ◽

Ana C. M. Malhado ◽

Marcos V. C. Vital ◽

...

Keyword(s):

Species Richness ◽

Bird Species ◽

Bird Communities ◽

Northeastern Brazil ◽

Forest Fragments ◽

Forest Types ◽

Risk Of Extinction ◽

Bird Fauna ◽

Richness Patterns ◽

Ombrophilous Forest

The Pernambuco Center of Endemism (PCE) in northeastern Brazil is highly fragmented and degraded. Despite its potential conservation importance the bird fauna in this area is still relatively unknown and there are many remnant fragments that have not been systematically surveyed. Here, we report the results of bird surveys in five forest fragments (one pioneer, two ombrophilous and two seasonal). In total, 162 taxa were recorded, 12 of which are endemic to the PCE. The frequency of endangered species was lower than what has been reported in studies from the same area and most of the taxa considered to be at risk of extinction were sub-species of uncertain taxonomic validity. The comparatively low number of endemic/threatened species may be due to the small size of the fragments in the present study - a consequence of the high levels of habitat loss in this region. Analysis of species richness patterns indicates that ombrophilous forest fragments are acting as refuges for those bird species that are most sensitive to environmental degradation.

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