Author: U.S. Fish and Wildlife ServicePublisher:
ISBN:
Category : Caspian tern
Languages : en
Pages : 364
Book Description
Caspian Tern Management to Reduce Predation of Juvenile Salmonids in the Columbia River Estuary
Author: U.S. Fish and Wildlife ServicePublisher:
ISBN:
Category : Caspian tern
Languages : en
Pages : 364
Book Description
Alaska Seabird Information Series (ASIS)
Author: Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 104
Book Description
"Compilation of seabird species accounts for all seabirds breeding in Alaska and five important nonbreeders. Conservation status, life history, distribution, population size and trends, conservation concerns, and recommended management actions are included in the accounts"--Leaf i.
Marine Birds of the Southeastern United States and Gulf of Mexico: Charadrillformes
Author: Roger B. ClappPublisher:
ISBN:
Category : Birds
Languages : en
Pages : 876
Book Description
Seabirds of the Pacific Northwest
Author: Publisher: Government Printing Office
ISBN: 9780160942273
Category : Sea birds
Languages : en
Pages : 16
Book Description
Birds of the North Gulf Coast-Prince William Sound Region, Alaska
Author: M. E. IsleibPublisher: University of Alaska Press
ISBN: 9780912006390
Category : Nature
Languages : en
Pages : 149
Book Description
Report on status, abundance, habitat, and seasonal occurrence of 219 species of birds as observed on the North Gulf Coast of Alaska-Prince William Sound. An annotated list of birds is provided.
Geomorphology of the Lower Copper River, Alaska
Author: Timothy P. BrabetsPublisher:
ISBN:
Category : Science
Languages : en
Pages : 102
Book Description
Marine Birds
Author: Pacific Seabird GroupPublisher: Canadian Wildlife Service
ISBN:
Category : Atlantic puffins
Languages : en
Pages : 238
Book Description
The papers presented in this document are listed under threeparts: Feeding ecology of marine waterfowl, Feeding ecology ofpelagic marine birds, and Commercial fisheries interactions.
Ecological Assessment of Selenium in the Aquatic Environment
Author: Peter M ChapmanPublisher: CRC Press
ISBN: 9780367384135
Category :
Languages : en
Pages : 368
Book Description
Based on the work and contributions of 46 scientists, managers, and policymakers, Ecological Assessment of Selenium in the Aquatic Environment documents the state of the science and explores how to use this information when assessing and managing the environmental effects of Se. A focused discussion on the fate and effects of Se in aquatic ecosystems, the book reviews: Past and current problems related to Se in aquatic environments, together with lessons learned, and provides a generalized conceptual model Environmental partitioning, in particular Se speciation leading to its entry into the food chain, and provides conceptual models specific to environmental partitioning. Se bioaccumulation and trophic transfer from the physical environment (i.e., water-column particulates), and from primary producers to herbivores to carnivores, including the influence of modifying ecological factors Toxic effects from Se, in particular body burdens and their relationship to toxicity Filled with practical guidance and concise information on how to conduct selenium risk assessments in the aquatic environment, the book contains the latest information on assessment techniques, elucidates the current state of contamination in industrialized countries, and raises awareness for developing nations. Written by leading experts, it describes best practices for designing experiments to collect information on aquatic effects and trophic transfer of selenium for risk assessments, presents numerous case studies both domestic and international, and gives insight as to how current and future ecosystems may or may not be affected.
Freshwater Biodiversity
Author: David DudgeonPublisher: Cambridge University Press
ISBN: 1108882625
Category : Nature
Languages : en
Pages : 517
Book Description
Growing human populations and higher demands for water impose increasing impacts and stresses upon freshwater biodiversity. Their combined effects have made these animals more endangered than their terrestrial and marine counterparts. Overuse and contamination of water, overexploitation and overfishing, introduction of alien species, and alteration of natural flow regimes have led to a 'great thinning' and declines in abundance of freshwater animals, a 'great shrinking' in body size with reductions in large species, and a 'great mixing' whereby the spread of introduced species has tended to homogenize previously dissimilar communities in different parts of the world. Climate change and warming temperatures will alter global water availability, and exacerbate the other threat factors. What conservation action is needed to halt or reverse these trends, and preserve freshwater biodiversity in a rapidly changing world? This book offers the tools and approaches that can be deployed to help conserve freshwater biodiversity.
Patterns in the Ocean
Author: Andrew BakunPublisher:
ISBN:
Category : Science
Languages : en
Pages : 358
Book Description