Results 161 to 170 of about 5,634 (193)

Waterbird Communities and Habitat Relationships in Coastal Pastures of Northern California

Conservation Biology, 1995
We examined waterbird assemblages (diversity, composition, and species’ densities) in 20 pastures near Humboldt Bay, California, in relation to habitat characteristics (vegetation height, soil penetrability, water depth), abundance of invertebrates (worms and other invertebrates), and presence of livestock. From October 1991 to May
Mark A. Colwell, Sarah L. Dodd
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Waterbird Communities in Rice Fields Subjected to Different Post-Harvest Treatments

Colonial Waterbirds, 1998
-In California's Sacramento Valley, the potential value of rice fields as habitat for waterbirds may vary with harvest method, post-harvest treatment of rice straw (chopped, burned, plowed), and extent of flooding. Recent changes in rice harvesting methods (i.e., use of stripper-headers) and a legislative mandate to decrease burning of rice straw after
John H. Day, Mark A. Colwell
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Processes driving temporal dynamics in the nested pattern of waterbird communities

Acta Oecologica, 2010
Nestedness is a common pattern of bird communities in habitat patches, and it describes the situation where smaller communities form proper subsets of larger communities. Several studies have examined the processes causing nestedness and the implications for conservation, but few have considered the temporal changes in these processes.
Esther Sebastián-González, Francisco Botella, Mariano Paracuellos, José Antonio Sánchez-Zapata   +3 more
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Community-Level Waterbird Responses to Water Hyacinth (Eichhornia crassipes)

Invasive Plant Science and Management, 2012
Water hyacinth is among the most widespread invasive plants worldwide; however, its effects on waterbirds are largely undocumented. We monitored site use by waterbirds at Lake Chapala, the largest lake in Mexico and recently designated Ramsar site, to evaluate the potential influence of water hyacinth cover on species composition and aggregate measures
Amy M. Villamagna, Brian R. Murphy, Sarah M. Karpanty   +2 more
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Waterbird diversity, densities, communities and seasonality in the Kalahari Basin, Botswana

Journal of Arid Environments, 1999
Abstract Surveys in all major wetlands in Botswana (52,127 birds of 104 species on 10,672 ha of water and along 1782 km of shoreline) showed that waterbird diversity (from rarefaction) and densities were highest at small ephemeral endorheic pans. Oligotrophic waters in the Okavango Delta had similar diversity, but 10 times lower density. Large saline
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Drivers of waterbird communities and their declines on Yangtze River floodplain lakes

Biological Conservation, 2018
Abstract The seasonally flooded Yangtze Valley Floodplain wetlands of China are globally important for wintering waterbirds in the East Asian-Australasian Flyway. These birds have declined in the last 60 years, so understanding factors shaping waterbird distribution and abundance patterns is critical for their conservation.
Jia, Qiang, Wang, Xin, Zhang, Yong, Cao, Lei, Fox, Anthony David   +4 more
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Variation of the waterbird community relying to the Ichkeul National Park, Tunisia

European Journal of Wildlife Research, 2008
For the period of 2001–2004, the detailed reaction of a waterbird community to dam building has been assessed in the Ichkeul National Park. Results showed that 71 species belonging to 8 orders were detected. Three herbivorous species were largely dominant: common coot (Fulica atra), common pochard (Aythya ferina), and Eurasian wigeon (Anas penelope ...
Nabil Hamdi, Faouzia Charfi, Aissa Moali
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Short-Term Demographic Responses of a Coastal Waterbird Community After Two Major Hurricanes

Waterbirds, 2013
Abstract. Response of breeding waterbird communities to the effects of hurricanes remains poorly understood. The impact of two 2008 hurricanes on the breeding waterbird community was investigated at the Isles Dernieres Barrier Island Refuge in southern Louisiana using pre- and post-hurricane survey data.
Edward J. Raynor, Aaron R. Pierce, Tabitha M. Owen, Cecilia M. Leumas, Frank C. Rohwer   +4 more
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Abundance and diversity of the waterbird community in a managed wetland ecosystem

2004
The waterbird community was studied in the Comacchio Lagoon for wildlife conservation and ecosystem wise use purposes. The studied area, divided into 33 sectors, covered little less than half of the 120 km2 total surface and all types of habitat and human management. Censuses were carried out 2-4 times every month during three years; average numbers of
BOLDREGHINI, PAOLO, A. Dall'Alpi
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Impacts of shellfisheries and nutrient inputs on waterbird communities in the Wash, England

Journal of Applied Ecology, 2010
Summary 1. Overexploited fisheries threaten many species that depend on the exploited resource. Shorebird populations are in decline globally and here we describe how changing shellfishery management and nutrient inputs have had dramatic influence on waterbird communities on an internationally important wetland. 2.
Philip W. Atkinson, Ilya M.D. Maclean, Nigel A. Clark   +2 more
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