Птицы озерных котловин южной части хребта Черского.

New data and analysis of the avifauna and bird species abundance are given for the lake systems of the southern part of the Chersky mountain ridge. In August - October of 2018 and in June and August of 2021, bird studies of lake basins of Ui, Momontay, Malyk, Darpir and Urultun lakes, situated at altitudes of 818-1234 meters above the sea level, were performed. 81 bird species were registered, of which 69 were recorded during breeding season, including 56 species referred to breeding and 13, to summering species. In comparison to the bird fauna of neighboring mountain areas, the avifauna of the studied lake systems is characterized by low species diversity, low percentage of widely-distributed species, and high percentage of boreal-hypoartcic and hypoarctic types of zonal- landscape distribution with clearly dominating species of the Siberian origin. Species content of the studied area is similar to that of the subalpine belt of Yakutia's northern mountains in the presence of Long-toed Stint, Red-throated Pipit and Pallas' Reed Bunting as well as, contrary to the subalpine belt of the Kolyma Highland, in the absence such species as Pine Grosbeak, Siberian Rubythroat, Pallas' Leaf Warbler, and Arctic Warbler on these elevations. On the other hand, the presence of such species as Ringed Plover and Dusky Warbler and the absence of Bluethroat is similar to the bird fauna of the Kolyma Highland subalpine belt. High abundance of both Beringian and Green-headed Yellow Wagtails sharing their habitats appeared to be a unique feature of the studied area. Confirmed breeding of Fieldfare on the elevations over 1000 m above the sea level significantly increases the knowledge on the distribution and ecology of this species.

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Die Brutvogelfauna eines Nadelwaldes der nördlichen Voralpen nach dem Sturm Lothar

Schweizerische Zeitschrift fur Forstwesen ◽

10.3188/szf.2017.0059 ◽

2017 ◽

Vol 168 (2) ◽

pp. 59-66

Author(s):

Pierre Mollet ◽

René Hardegger ◽

Res Altwegg ◽

Pius Korner ◽

Simon Birrer

Keyword(s):

Forest Succession ◽

Coniferous Forest ◽

Bird Species ◽

Individual Species ◽

Mountain Forest ◽

Breeding Bird ◽

Point Counts ◽

Federal Institute ◽

Central Switzerland ◽

Bird Fauna

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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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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Preferred temperature and thermal breadth of birds wintering in peninsular Spain – the limited effect of temperature on species distribution

10.7287/peerj.preprints.1880 ◽

2016 ◽

Author(s):

Luis M. Carrascal ◽

Sara Villén-Pérez ◽

David Palomino

Keyword(s):

Species Abundance ◽

Bird Species ◽

Effect Of Temperature ◽

Response Curves ◽

Large Variability ◽

Preferred Temperature ◽

Mean Temperature ◽

The Mean ◽

Thermal Preferences ◽

Peninsular Spain

Background. Availability of environmental energy, as measured by temperature, is expected to limit the abundance and distribution of endotherms wintering at temperate latitudes. A prediction of this hypothesis is that birds should attain their highest abundances in warmer areas. However, there may be a spatial mismatch between species preferred habitats and species preferred temperatures, so some species might end-up wintering in sub-optimal thermal environments. Methods. We model the influence of minimum winter temperature on the relative abundance of 106 terrestrial bird species wintering in peninsular Spain, at 10x10 Km2 resolution, using 95%-quantile regressions. We analyze general trends across species on the shape of the response curves, the environmental preferred temperature (at which the species abundance is maximized), the mean temperature in the area of distribution and the thermal breadth (area under the abundance-temperature curve). Results. There is a large interspecific variability on the thermal preferences and specialization of species. Despite this large variability, there is a preponderance of positive relationships between species abundance and temperature, and on average species attain their maximum abundances in areas 1.9 ºC warmer than the average temperature available in peninsular Spain. The mean temperature in the area of distribution is lower than the thermal preferences of the species, although both parameters are highly correlated. Discussion. Most species prefer the warmest environments to overwinter, which suggests that temperature imposes important restrictions to birds wintering in the Iberian Peninsula. However, most individuals overwinter in locations colder than the species thermal preferences, probably reflecting a limitation of environments combining habitat and thermal preferences. Beyond these general trends, there is a high inter-specific variation in the versatility of species using the available thermal space .

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The Latrobe Group and the 90-million-year beach

The APPEA Journal ◽

10.1071/aj12071 ◽

2013 ◽

Vol 53 (2) ◽

pp. 460

Author(s):

Nick Hoffman ◽

Natt Arian

Keyword(s):

Sea Level ◽

Co2 Storage ◽

Hydrocarbon Exploration ◽

Petroleum Exploration ◽

3D Seismic ◽

Fluvial Systems ◽

Detailed Understanding ◽

Marine Embayment ◽

Gippsland Basin ◽

Lake Systems

Carbon dioxide geosequestration requires a detailed understanding of the whole sedimentary section, with particular emphasis on topseals and intraformational seals. Hydrocarbon exploration is more focused on reservoirs but requires a similar basin understanding. This extended abstract reviews the knowledge gained from petroleum exploration in the Gippsland Basin to The CarbonNet Project’s exploration program for CO2 storage. The Ninety Mile Beach on the Gippsland coast is a prominent modern-day sand fairway where longshore drift transports sediments north-eastwards along a barrier-bar system, trapping lake systems behind the coastal strip. This beach is only 10,000 years old (dating to the last glacial rise of sea level) but is built on a platform of earlier beaches that can be traced back almost 90 million years to the initiation of Latrobe Group deposition in the Gippsland Basin. Using a recently compiled and open-file volume of merged 3D seismic surveys, the authors show the evolution of the Latrobe shoreline can be mapped continuously from the Upper Cretaceous to the present day. Sand fairways accumulate as a barrier-bar system at the edge of a steadily subsiding marine embayment, with distinct retrogradational geometries. Behind the barrier system, a series of trapped lakes and lagoons are mapped. In these, coal swamps, extensive shales, and tidal sediments were deposited at different stages of the sea-level curve, while fluvial systems prograded through these lowlands. Detailed 3D seismic extractions show the geometry, orientation and extent of coals, sealing shales, fluvial channels, and bayhead deltas. Detailed understanding of these reservoir and seal systems outlines multi-storey play fairways for hydrocarbon exploration and geosequestration. Use of modern basin resource needs careful coordination of activity and benefits greatly from established data-sharing practices.

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Winter bird abundance, species richness and functional guild composition at Delhi’s ponds: does time of day and wetland extent matter?

Journal of Urban Ecology ◽

10.1093/jue/juab001 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Prakhar Rawal ◽

Swati Kittur ◽

Murali Krishna Chatakonda ◽

K S Gopi Sundar

Keyword(s):

Species Richness ◽

Species Abundance ◽

Bird Species ◽

Time Of Day ◽

Conservation Priorities ◽

Bird Abundance ◽

Functional Guilds ◽

Β Diversity ◽

Functional Guild ◽

Guild Composition

Abstract Urbanisation can limit species persistence and bias composition of functional guilds with serious consequences for ecosystem functioning and conservation planning. Standardised biodiversity surveys are missing at most tropical urban cities where biodiversity levels are high alongside rapidly increasing rates of urbanisation. We explored the utility of time-bound surveys to document winter birds at ponds (wetlands ≤ 5 ha) in Delhi, India at two different times of the day (morning and evening) and in areas with varying extents of wetlands. Systematic surveys at 39 ponds during January–March 2020 yielded an estimated 173 ± 22 bird species (∼37% of Delhi’s birds). The total bird species assemblage at ponds did not vary significantly with time of day, but β-diversity increased marginally with increasing extent of wetlands. Total bird abundance and species richness varied substantially with time of day, with differences apparent across several species rich functional feeding and habitat guilds. Abundance and species richness of some guilds, including species-poor guilds, varied in ponds located in areas with differing extent of wetlands. Reliable and comparable measures of species abundance and species richness (both total and across functional guilds)— metrics commonly used to set research and conservation priorities—in urban habitats can be obtained after appropriately standardising field effort. Such standardised efforts can help underscore the importance of maintaining and improving erstwhile-ignored habitats such as unprotected ponds that are providing refugia to hundreds of bird species in mega-cities like Delhi.

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The first detailed ornithological description of the island of Žirje (Croatia)

Ornis Hungarica ◽

10.1515/orhu-2015-0015 ◽

2015 ◽

Vol 23 (2) ◽

pp. 53-61

Author(s):

Jenő J. Purger

Keyword(s):

Bird Species ◽

Preliminary Survey ◽

Resident Species ◽

Intensive Research ◽

Wintering Birds ◽

Bird Fauna

Abstract Ornithofauna of the island of Žirje has not been explored yet. During an early and late survey in September of 2013 and 2014 altogether 50 bird species were recorded, 34 and 41 species was noted including both migratory and resident species in the two parts of the month, respectively. Nine species appeared only at the first half, while 16 species were registered only at the second half of the mouth. The results of this preliminary survey showed the obvious need for more intensive research of the island’s bird fauna, with special attention on nesting and wintering birds.

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Ecological Gradients Influencing Waterbird Communities in Black Water Lakes in the Anavilhanas Archipelago, Central Amazonia

International Journal of Ecology ◽

10.1155/2012/801683 ◽

2012 ◽

Vol 2012 ◽

pp. 1-21 ◽

Cited By ~ 10

Author(s):

Renato Cintra

Keyword(s):

Bird Species ◽

Bird Community ◽

High Water ◽

Water Transparency ◽

Aquatic Bird ◽

Large Spatial Scale ◽

Black Water ◽

Bird Richness ◽

Central Amazonia ◽

Lake Systems

For the first time, and in a large spatial scale, the influence of ecological properties on the aquatic bird community of black water lakes in Brazilian Amazonia is evaluated. Bird surveys were conducted in 45 lakes. A total of 3626 individuals in 48 bird species were recorded; of these, 31 are aquatic, and 18 of these are primarily piscivorous. Bird richness and abundance were not significantly related to lake shape and productivity but were influenced by hydrological period (low versus high), water depth, transparency, lake isolation, and habitat richness. Matrices of bird species by lake were subjected to multivariate analyses (NMDS) to evaluate how these parameters influence bird community. The variation in bird species composition was positively correlated to lake depth and isolation and negatively correlated to water transparency and habitat richness. The results indicate that period, lake physical characteristics (depth, water transparency), isolation, and habitat richness are determinants of aquatic bird community composition in the black water lake systems of Amazonia.

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Effects of landscape context on bird species abundance of tree fall gaps in a temperate deciduous forest of Northern Iran

Forest Ecology and Management ◽

10.1016/j.foreco.2011.12.001 ◽

2012 ◽

Vol 267 ◽

pp. 182-189 ◽

Cited By ~ 10

Author(s):

Maryam Gharehaghaji ◽

Afshin Alizadeh Shabani ◽

Jahangir Feghhi ◽

Afshin Danehkar ◽

Mohammad Kaboli ◽

...

Keyword(s):

Deciduous Forest ◽

Species Abundance ◽

Bird Species ◽

Landscape Context ◽

Temperate Deciduous Forest ◽

Northern Iran ◽

Temperate Deciduous

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Bird fauna long-term monitoring in the Romanian lower Prut river basin

Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” ◽

10.2478/v10191-010-0020-9 ◽

2010 ◽

Vol 53 (1) ◽

pp. 287-302

Author(s):

Carmen Gache

Keyword(s):

River Basin ◽

Industrial Development ◽

Bird Species ◽

Breeding Bird ◽

Limosa Limosa ◽

Bird Fauna ◽

Long Term Monitoring ◽

Term Monitoring ◽

Prut River

Bird fauna long-term monitoring in the Romanian lower Prut river basin In the present paper, we give data on the bird' fauna's dynamic during the last 18 years in the Romanian Lower Prut River basin. This valley shelters a good level of the biodiversity being very well protected through the border status, but due the low level of the industrial development, too, despite an increasing of the human pressure in the last years. We recorded in this area some very rare breeding bird species for Romania - Platalea leucorodia, Plegadis falcinellus, Limosa limosa, Recurvirostra avosetta, Himantopus himantopus, Luscinia svecica, etc. but also some globally threatened species like Phalacrocorax pygmeus, Aythya nyroca or Crex crex. In this sector of the Prut River basin three Important Birds Areas (IBA) were delimited, all included in the "Romanian Nature 2000 Network".

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Climatic effects on turnover of lowland forest bird communities across a precipitation gradient

10.1101/251264 ◽

2018 ◽

Author(s):

Juan Pablo Gomez ◽

José Miguel Ponciano ◽

Scott K. Robinson

Keyword(s):

Community Composition ◽

Species Abundance ◽

Environmental Filtering ◽

Bird Species ◽

Biotic Interactions ◽

Dry Forest ◽

Precipitation Gradient ◽

Climatic Effects ◽

Lowland Forest ◽

Abundance And Distribution

AbstractOne of the main goals of community ecology is to understand the influence of the abiotic environment on the abundance and distribution of species. It has been hypothesized that dry forests are harsher environments than wet forests, which leads to the prediction that environmental filtering should be a more important determinant of patterns of species abundance and composition than in wet forest, where biotic interactions or random assembly should be more important. We attempt to understand the influence of rainfall on the abundance and distribution of bird species along a steep precipitation gradient in an inter-Andean valley in Colombia. We gathered data on species distributions, abundance, morphological traits and phylogenetic relationships to determine the influence of rainfall on the taxonomic, functional and phylogenetic turnover of species along the Magdalena Valley. We demonstrate that there is a strong turnover of community composition at the limit of the dry forest. The taxonomic turnover is steeper than the phylogenetic turnover, suggesting that replacement of closely related species accounts for a disproportionate number of changes along the gradient. We found evidence for environmental filtering in dry forest as species tend to be more tolerant of higher temperature ranges, stronger rainfall seasonality and lower minimum rainfall. On the other hand, wet forest species tend to compete actively for nest space but not for the resources associated with the axes we measured. Our results suggest that rainfall is a strong determinant of community composition when comparing localities above and below the 2400 mm rainfall isocline.

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