Organochlorine Residues in Eggs of Alaskan Seabirds


Book Description

One egg from each of 440 clutches of eggs of 19 species of Alaskan seabirds collected in 1973-76 was analyzed for organochlorine residues. Both frequency of occurrence and concentration of residues in the eggs differed geographically and by species, apparently reflecting non-uniform distribution of organochlorines in the environment, dissimilar feeding habits and migration patterns of the species, or metabolic differences among the species.










Reliability of Kill and Activity Estimates in the U.S. Waterfowl Hunter Survey


Book Description

A mail questionnaire survey of waterfowl hunters is conducted each year in the United States to provide information on waterfowl kill and hunter activity. We carried out a study using data from the 1971-73 and 1972-73 hunting seasons to determine the effectiveness of the present U.S. sampling and estimation techniques, and a number of modifications in both sampling and analysis is recommended.




Biological Report


Book Description













Handbook of Chemical Risk Assessment


Book Description

Written over a period of 17 years, the Handbook of Chemical Risk Assessment exhaustively examines and analyzes the world literature on chemicals entering the environment from human activities. The three volumes cover chemicals recommended by environmental specialists of the U.S. Fish and Wildlife Service and other resource managers. The choices were based on the real or potential impact of each contaminant and on the knowledge available about their mitigation. The information for each chemical includes source and use; physical, chemical, and metabolic properties; concentrations in field collections of abiotic materials and living organisms; deficiency effects; lethal and sublethal effects; and proposed regulatory criteria for the protection of human health and sensitive natural resources. Each chapter selectively reviews and synthesizes the technical literature on a specific priority contaminant and its effects on the environment. Successful risk assessment relies heavily on extensive and well-documented databases. They often include too much - or too little - information about too many chemicals. Of the hundreds of thousands of chemicals discharged into the environment, only a small number have sufficient information to attempt preliminary risk assessment. Sold only as a three volume set, the Handbook of Chemical Risk Assessment provides you with the exact amount of information you need in a single resource.




The Ancient Murrelet


Book Description

Breeding along the northern Pacific coast from British Columbia to Japan, this little known bird dwelt in relative obscurity until it became the focus of a conservation debate which has resulted in a new National Park in the Queen Charlotte Islands, where half the world's population breeds. It made the headlines again when a lost, lone bird suddenly appeared at Lundy Island in the Bristol Channel, England, in May 1990 and again in April 1991. The Ancient Murrelet and its three congeners are unique amongst seabirds in that their young are entirely precocial, leaving the nest as soon as they hatch to grow up at sea. Tony Gaston has carried out the only detailed study of the bird, in the fine mature coastal forests of the Queen Charlotte Islands. His work has revealed their complex social behaviour, the song behaviour of the males and the species' response to the variety of predators which they face - from Peregrines to Deer Mice. His story is set against a survey of the species worldwide and the grandeur of the northwest Pacific coast. The illustrations of Ian Jones, who also assisted with the research, capture the bird and its environment beautifully.