Download or read book Early Tertiary Mollusks from the Powder River Basin Wyoming Montana and Adjacent Regions written by Dwight Willard Taylor and published by . This book was released on 1975 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1962 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology written by W. D. Russell-Hunter and published by Elsevier. This book was released on 2013-09-24 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mollusca, Volume 6: Ecology provides an overview of the state of knowledge in molluscan ecology. It is part of a multivolume treatise that covers the fields of biochemistry, physiology, neurobiology, reproduction and development, evolution, ecology, medical aspects, and structure. The Mollusca is intended to serve a range of disciplines: biological, biochemical, paleontological, and medical. As a source of information on the current status of molluscan research, it should prove useful to researchers of the Mollusca and other phyla, as well as to teachers and qualified graduate students. The book contains 15 chapters, arranged into three levels of ecological perspective: (a) distributional studies; (b) physiological ecology and bioenergetics; and (c) population genetics and dynamics. A discussion of the planetary distribution of and ecological constraints upon the mollusca is followed by separate chapters on the life styles and distribution of mollusks on the deep-sea bottom, in mangroves, and on coral reefs; and the trophic and reproductive ecology of those intrinsically fascinating molluscan groups—the nudibranchs and cephalopods. Subsequent chapters present physiological ecology in land snails and in freshwater bivalves, prosobranchs, and pulmonates, with a survey of the techniques of actuarial bioenergetics as applied to nonmarine molluscs. Other chapters cover population dynamics and biology in an introduced pest species, population genetics of marine molluscs, ecogenetics of land snails, and life-cycle pattems throughout the major molluscan taxa.

Download or read book Handlingar written by Kungl. Vetenskaps- och vitterhets-samhället i Göteborg and published by . This book was released on 1966 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The University of Colorado Studies written by University of Colorado and published by . This book was released on 1924 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reproduction of Marine Invertebrates V4 written by Arthur Giese and published by Elsevier. This book was released on 2012-12-02 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproduction of Marine Invetebrates, Volume IV Molluscs: Gastropods and Cephalopods describes the wide range of structural complexity and diverse modes of reproduction of gastropods and cephalopods. Each chapter discusses the asexual reproduction, sexual reproduction capacity, and developmental stages of different group of gastropods and cephalopods, including prosobranchia, opisthobranchia, pulmonata, nautiloidea, decapoda, and octopoda. Gastropods are among the most conspicuous sea animals, and species of limpets, snails, and slugs are found in all marine habitats. Cephalopods are active and important marine predators, ranging from archaic nautiloids to more recent pelagic decapods and benthic octopods, which are often considered to be one of the apexes of invertebrate evolution. They are all gonochoric and reproduce only by sexual means. All have intricate courtship behavior and derived developmental patterns. Marine biologists and researchers, scientists, and developmental biologists will find this book invaluable.

Download or read book Biology and Evolution of the Mollusca Volume 2 written by Winston Frank Ponder and published by CRC Press. This book was released on 2020-02-14 with total page 1127 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides individual treatments of the major molluscan taxa. Each chapter provides an overview of the evolution, phylogeny and classification of a group of molluscs, as well as more specific and detailed coverage of their biology (reproduction, feeding and digestion, excretion, respiration etc.), their long fossil record and aspects of their natural history. The book is illustrated with hundreds of colour figures. In both volumes, concepts are summarised in colour-coded illustrations. Key selling features: Comprehensively reviews molluscan biology and evolutionary history Includes a description the anatomy and physiology of anatomical systems Up to date treatment with a comprehensive bibliography Reviews the phylogenetic history of the major molluscan lineages

Download or read book Analytical catalogue of fresh and brackish water molluscs of Russia and adjacent countries written by M. Vinarski and published by Litres. This book was released on 2022-01-29 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: В монографии обобщены данные о таксономии, номенклатуре, географическом распространении и некоторых аспектах биономии моллюсков пресных и солоноватых вод территории бывшего СССР. Всего в настоящий каталог включены данные о 424 номинальных видах класса Bivalvia и 728 номинальных видах Gastropoda. Актуальное видовое богатство водных континентальных моллюсков бывшего СССР, вероятно, существенно ниже, поскольку валидность многих из номинальных видов нуждается в дополнительном подтверждении, и в будущем часть из них может быть сведена в синонимы. Каждому виду посвящен краткий очерк, построенный по единой схеме. Также в каталоге содержатся данные о распространении всех видов моллюсков по отдельным регионам бывшего СССР, сведения о вселении инвазивных видов, информация об охранном статусе отдельных видов в соответствии с критериями МСОП. Также приведены количественные данные о сходстве водных фаун отдельных регионов бывшего СССР и результаты кластерного анализа, выполненного на их основе. Книга предназначена для специалистов в области малакологии, биогеографии, гидробиологии, а также для преподавателей и студентов высших учебных заведений.The monograph summarizes information on taxonomy, nomenclature, distribution and some aspects of bionomics of molluscs of the former USSR fresh and brackish waters. This ‘Analytical catalogue’ is a deeply improved and updated version of two previously published catalogue works (Yu.I. Kantor, A.V. Sysoev “Catalogue of molluscs of Russia and adjacent countries”, 2002, in Russian; and Yu.I. Kantor, M.V. Vinarski, A.A. Shileyko, A.V. Sysoev “Catalogue of the continental mollusks of Russia and adjacent territories”, 2010). In total, the data on 424 nominal species of Bivalvia and 728 nominal species of Gastropoda are included into this book. The actual species richness of aquatic continental molluscs of the former USSR perhaps is significantly lower since validity of many of these nominal species may be questioned and a portion of them is destined to be synonymized in future. During preparation of the book the authors tried to take into account different views on systematization of the ex- USSR aquatic molluscs and to find some correspondence between the ‘Russian’ system (founded in 1960–1970s by Ya.I. Starobogatov) and the approach followed by malacologists working outside Russia. Current approaches to the ‘species problem’ in malacology are briefly discussed. Also, the catalogue includes information about distribution of all molluscan species among large regions of the former USSR area, some data about invasions of alien species and the conservation status of indigenous taxa in accordance with IUCN Red List criteria. The quantitative estimates of faunistic similarity between aquatic malacofaunas of the ex-USSR large regions and the results of the cluster analysis carried out on the basis of these estimates are also provided. The book is addressed to malacologists, biogeographers, hydrobiologists as well as to university lecturers and students.

Download or read book Handlingar written by and published by . This book was released on 1966 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transparency Measurements in the Skagerack written by Bengt Hubendick and published by . This book was released on 1964 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the First European Malacological Congress London September 17 21 1962 written by Conchological Society of Great Britain and Ireland and published by . This book was released on 1965 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Walkerana written by and published by . This book was released on 1981 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications de zoologie written by and published by . This book was released on 1970 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Anatomy of the Alimentary System of Marisa Cornuarietis L written by Emile S. Demian and published by . This book was released on 1964 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Morphological Studies on the Buccal Mass of the Lymnaeacea written by Emile S. Demian and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Fauna of Suriname and other Guyanas written by D.C. Geijakes and published by Springer. This book was released on 2013-12-17 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Lake Vechten and Tjeukemeer The Netherlands written by Ramesh D. Gulati and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Netherlands, like the other industrialized countries in the northern hemisphere, is faced with increas ing environmental pro blems. Being a country rich in water - at least in terms of surface area - and low-lying, problems related to water are as old as the nation itself. The problems in regard to water quality are becoming more acute and complicated due to the progressive rise in air and ground pollution. Glaring examples are the acid rains and contamination of ground-water resources by toxic, and often illegal, waste dumps. Being a delta country, the Netherlands is also very vulnerable to pollution from the·water sources outside the country's national boundaries, i.e. the rivers Rhine, Meuse and ScheIdt. Not only the national but also the international authorities are active in developing measures to both prevent and combat water pollution, and to restore as far as possible the natural balance or a 'reasonable' water quality. The pollution abatement programmes are based on ecological theories; accepting waterbodies as aquatic ecosystems, the authorities concerned try to influence and lead the progresses in the systems to reach or maintain the desired ecosystem structure. Suter II (1981) mentioned a number of reasons why the attempts to use ecosystem theories to assess the impacts on the environment have been disappointing to date. It is clear that one of the reasons for the failure is lack of proper knowledge.