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The hard clam, Mercenaria mercenaria, is an important commercial, recreational and ecological inhabitant of coastal bays along the east and gulf coasts of the United States. This title represents the first state of the art summary of existing knowledge of the hard clam by experts in various disciplines.Containing a compendium of literature on the hard clam, comprehensive chapters on various aspects of its biology as well as summaries of knowledge including the gray literature on this economically important species, this volume represents a comprehensive source of biological informatio

Northern quahog. --- Bivalves --- Physiology.

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Bivalves --- Yonge, C. M. --- Mollusks

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Fishery products --- Bivalves --- Acephala --- Aglossa --- Anodontoda --- Bivalvia --- Conchifera --- Conchophora --- Cormopoda --- Dithra --- Elatobranchiata --- Elatocephala --- Eulamellibranchia --- Lamellibranchia --- Lamellibranchiata --- Lipocephala --- Pelecypoda --- Teleodesmacea --- Tropipoda --- Mollusks --- Aquatic resources --- Inspection --- E-books

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The monograph focuses on the European freshwater pearl mussel Margaritifera margaritifera, which is an endangered bivalve species. Most of its populations in the Russian section of the Baltic Sea basin had never been studied, although they were known in the past to the pearl fishers. “Rediscovery” included search for the previously unknown populations, revealing the facts of population extinctions, analysis of negative impacts, elaboration of conservation measures, and revealing of regularities in distribution. Patterns of land use and river management were analyzed. The procedure of “rediscovery” was applied for other animal species of Northwest Russia, which are threatened on a global scale – thick-shelled mussel, Unio crassus; curlew Numenius arquata; black-tailed godwit, Limosa limosa; Northern Lapwing, Vanellus vanellus; European mink, Mustela lutreola; pond bat, Myotis dasycneme; Atlantic sturgeon, Acipenser sturio; and broad-clawed crayfish, Astacus astacus. The methods and principles of conservation studies were discussed. The obtained data were analyzed with respect to current global change of biosphere. The book will appeal to specialists dealing with conservation studies and activities such as red lists, river protection, and conservation of endangered species. Moreover, a part of the book represents an interest for biogerontology as it presents discredit of the popular concept on “negligible senescence.” The data on distribution of some animals in Russia will be interesting in terms of zoology and biogeography, as they are not yet sufficiently represented in the international editions. The book can be used as supplemental reading for courses in biological invasions, ecology and conservation, and biodiversity. The work also contains chapters on global processes (deforestation, desertification, river degradation) and can therefore also be used for general courses in environmental sciences.

Aquatic ecology . --- Conservation biology. --- Ecology . --- Biodiversity. --- Animal ecology. --- Freshwater & Marine Ecology. --- Conservation Biology/Ecology. --- Animal Ecology. --- Animals --- Zoology --- Ecology --- Biological diversification --- Biological diversity --- Biotic diversity --- Diversification, Biological --- Diversity, Biological --- Biology --- Biocomplexity --- Ecological heterogeneity --- Numbers of species --- Balance of nature --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Nature conservation --- Aquatic biology --- Margaritifera margaritifera. --- Margaritana margaritifera --- Margaritifera --- Bivalves --- Conservació de la diversitat biològica --- Bàltica (Mar) --- Rússia (Federació) --- Conservació de la biodiversitat --- Preservació de la biodiversitat --- Preservació de la diversitat biològica --- Conservació dels recursos naturals --- Gestió dels ecosistemes --- Acèfals --- Bivalvia --- Conquilles bivalves --- Lamel·libranquis --- Mol·luscs bivalves --- Pelecípodes --- Mol·luscs --- Cloïsses --- Musclos --- Ostres --- Federació Russa --- Rossiskaja Federacija --- Russian Federation --- Bàltic (Mar) --- Mar Bàltic --- Mar Bàltica

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Pearly mussels (Unionoidea) live in lakes, rivers, and streams around the world. These bivalves play important roles in freshwater ecosystems and were once both culturally and economically valuable as sources of food, pearls, and mother-of-pearl. Today, however, hundreds of species of these mussels are extinct or endangered. David L. Strayer provides a critical synthesis of the factors that control the distribution and abundance of pearly mussels. Using empirical analyses and models, he assesses the effects of dispersal, habitat quality, availability of fish hosts, adequate food, predators, and parasites. He also addresses conservation issues that apply to other inhabitants of fresh waters around the globe and other pressing issues in contemporary ecology.

Freshwater mussels --- Clams, Freshwater --- Fresh-water mussels --- Freshwater clams --- Mussels, Fresh-water --- Naiades (Mollusks) --- Naiads (Mollusks) --- Unionacea --- Freshwater invertebrates --- Mussels --- Unionoida --- Ecology. --- bivalves. --- conservation issues. --- contemporary ecology. --- critical approach. --- cultural value. --- economic value. --- endangered species. --- extinct mussels. --- food mussels. --- freshwater ecology. --- freshwater ecosystems. --- freshwater lakes. --- habitat quality. --- healthy ecosystems. --- mother of pearl. --- mussel abundance. --- mussel distribution. --- mussel ecology. --- mussel populations. --- mussel predators. --- mussels. --- parasites. --- pearls. --- pearly mussels. --- rivers and streams. --- scientists. --- textbook. --- zoology.