Environmental Pollutants And Eggshell Thickness
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Author | : Harry M. Ohlendorf |
Publisher | : |
Total Pages | : 100 |
Release | : 1979 |
Genre | : Anhinga anhinga |
ISBN | : |
In 1972 and 1973 we collected 1,339 clutches of eggs of anhingas (Anhinga anhinga) and 17 species of waders (herons, egrets, bitterns, ibises, and storks). We analyzed the eggs for organochlorine residues and compared shell thickness of these eggs and others collected since 1946 (and now in museum collections) with shell thickness of eggs collected before the widespread use of organochlorine pesticides. Eggshells were significantly thinner in one or more regions for the post-1946 samples of anhinga, great blue heron, black-crowned night heron, and wood stork. We detected no significant change in the other species.
Author | : Harry M. Ohlendorf |
Publisher | : |
Total Pages | : 100 |
Release | : 1979 |
Genre | : Anhinga anhinga |
ISBN | : |
In 1972 and 1973 we collected 1,339 clutches of eggs of anhingas (Anhinga anhinga) and 17 species of waders (herons, egrets, bitterns, ibises, and storks). We analyzed the eggs for organochlorine residues and compared shell thickness of these eggs and others collected since 1946 (and now in museum collections) with shell thickness of eggs collected before the widespread use of organochlorine pesticides. Eggshells were significantly thinner in one or more regions for the post-1946 samples of anhinga, great blue heron, black-crowned night heron, and wood stork. We detected no significant change in the other species.
Author | : U.S. Fish and Wildlife Service |
Publisher | : |
Total Pages | : |
Release | : 1979 |
Genre | : |
ISBN | : |
Author | : Harry M. Ohlendorf |
Publisher | : |
Total Pages | : 94 |
Release | : 1979 |
Genre | : Anhinga anhinga |
ISBN | : |
Author | : Calvin M. Menzie |
Publisher | : |
Total Pages | : 45 |
Release | : 1978 |
Genre | : Anhinga anhinga |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 158 |
Release | : 1997 |
Genre | : Environmental monitoring |
ISBN | : |
Author | : Jules M. Blais |
Publisher | : Springer |
Total Pages | : 515 |
Release | : 2015-03-27 |
Genre | : Technology & Engineering |
ISBN | : 940179541X |
The human footprint on the global environment now touches every corner of the world. This book explores the myriad ways that environmental archives can be used to study the distribution and long-term trajectories of chemical contaminants. The volume first focuses on reviews that examine the integrity of the historic record, including factors related to hydrology, post-depositional diffusion, and mixing processes. This is followed by a series of chapters dealing with the diverse archives and methodologies available for long-term studies of environmental pollution, such as the use of sediments, ice cores, sclerochronology, and museum specimens.
Author | : U.S. Fish and Wildlife Service |
Publisher | : |
Total Pages | : 826 |
Release | : 1976 |
Genre | : Animals |
ISBN | : |
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 401 |
Release | : 1986-02-01 |
Genre | : Science |
ISBN | : 0309036453 |
This volume explores how the scientific tools of ecology can be used more effectively in dealing with a variety of complex environmental problems. Part I discusses the usefulness of such ecological knowledge as population dynamics and interactions, community ecology, life histories, and the impact of various materials and energy sources on the environment. Part II contains 13 original and instructive case studies pertaining to the biological side of environmental problems, which Nature described as "carefully chosen and extremely interesting."
Author | : |
Publisher | : |
Total Pages | : 204 |
Release | : 1995 |
Genre | : Environmental health |
ISBN | : |