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Large gulls (Larus) spp. are voracious predators of eggs and chicks of other colonial birds and may threaten rare or endangered species. We tested the...

The impacts of anthropogenic climate change will be most dramatic for species that live in narrow thermal niches, such as reptiles. Given the imminent...

Many parasites of medical and veterinary importance infect via free-living stages that undergo a period of development in the environment before seeki...

Summary only. Chloride content of the soils and groundwater was very high and varied in different parts of the swamp but each profile showed little se...

The following is virtually the author's summary. Studies were carried out in 1958-62 on some of the factors that affect the formation of bands of hopp...

The following is virtually the author's summary. Since 1950, egg breakage has occurred with unprecedented frequency in the nests of peregrines (Falco ...

Freshwaters are among the most endangered ecosystems in the world as a result of anthropogenic interference such as pollution. Pollution in the form o...

Wetland ecosystems throughout the world are threatened by drainage and intensification of agriculture. Consequently, many wetland species of conservat...