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Numerical Growth And Secondary Production Responses Of The Benthic Macroinvertebrate Community To Whole Lake Enrichment In Insular Newfoundland
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Book Synopsis Numerical, Growth and Secondary Production Responses of the Benthic Macroinvertebrate Community to Whole-lake Enrichment in Insular Newfoundland by : Keith Clarke
Download or read book Numerical, Growth and Secondary Production Responses of the Benthic Macroinvertebrate Community to Whole-lake Enrichment in Insular Newfoundland written by Keith Clarke and published by . This book was released on 1995 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Masters Abstracts International by :
Download or read book Masters Abstracts International written by and published by . This book was released on 1996 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current and Selected Bibliographies on Benthic Biology by :
Download or read book Current and Selected Bibliographies on Benthic Biology written by and published by . This book was released on 1996 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Individual- and community-level responses of littoral macroinvertebrates to lake nutrient enrichment by : Louise Anna Donohue
Download or read book Individual- and community-level responses of littoral macroinvertebrates to lake nutrient enrichment written by Louise Anna Donohue and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Examination of Littoral Benthic Macroinvertebrate Community Composition in Response to Calcium Decline in Northern Ontario Lakes by :
Download or read book Examination of Littoral Benthic Macroinvertebrate Community Composition in Response to Calcium Decline in Northern Ontario Lakes written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing concern on the potential ecological effects of what appears to be recent declines in aqueous calcium (Ca) concentrations in softwater lakes in the Canadian Shield. The relative importance of calcium concentration on littoral macroinvertebrate community structure was investigated in six lakes within the Nipissing and Muskoka districts in Ontario, Canada. Benthic macroinvertebrates and water chemistry were sampled in the fall and sorted using the standard Ontario Benthos Biomonitoring Network protocols (OBBN) for lakes. Differences in community structure and density amongst the lakes were quantified using principle component analysis, canonical correspondence analysis and a series of one-way ANOVAs. The results indicated that habitat preferences of certain macroinvertebrates play a big role in the community structure of invertebrates within a lake. However, it was found even in preferential habitat (macrophyte, rock, silt, sand and detritus), the presence of gastropods in lakes were insignificant and often absent from sites and lake with low Ca concentrations. Amphipods displayed similar densities and composition in lakes sites with the similar Ca concentration and habitat (macrophytes, cobble and roots). Consequently, changes in Ca concentrations greatly reduced amphipods density, regardless of similar habitat. Bivalves were shown to be greatly associated with both habitat (buried in substrate) and the availability of environmental Ca in the lakes. In general, it was observed that lakes with higher Ca concentrations, generally above 2 mg/L were shown to have greater macroinvertebrate densities, in comparison to lakes with Ca concentrations below 2 mg/L. Plastic Lake (Ca= 0.96 mg/L) had the lowest abundance of crustaceans and molluscs between lakes. This result suggests that crustaceans and mollusc abundance in lakes can be greatly reduced when Ca concentrations drop below 1.00 mg/L altering community structure. Calcium sensitive groups, such as gastropods and amphipods within the crustaceans and molluscs family, were found to have higher abundance numbers in higher calcium lakes.
Book Synopsis Examination of Littoral Benthic Macroinvertebrate Community Composition in Response to Calcium Decline in Northern Ontario Lakes by :
Download or read book Examination of Littoral Benthic Macroinvertebrate Community Composition in Response to Calcium Decline in Northern Ontario Lakes written by and published by . This book was released on 2013 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ecological Response of Lakes and Littoral Benthic Macroinvertebrates to Alterations in Flood Regime in a Climate-Sensitive Arctic River Delta by : Ryan William Scott
Download or read book The Ecological Response of Lakes and Littoral Benthic Macroinvertebrates to Alterations in Flood Regime in a Climate-Sensitive Arctic River Delta written by Ryan William Scott and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mackenzie River Delta is a major outlet to the Arctic Ocean, an important habitat for freshwater organisms, migratory birds, and mammals, and a critical economic and social resource for the Gwich'in and Inuvialuit people. The Delta is also sensitive to climate change, with an increased likelihood of more variable discharge and rising sea levels, leading to forecasts of increasing isolation of many high-elevation floodplain lakes and increasing connectivity of low-elevation lakes. While extensive and ongoing studies of the biogeochemistry of these lakes exist, lower secondary producers such as macroinvertebrates represent an overlooked element of the Mackenzie Delta ecosystem. The objective of this thesis is to identify the effects of flooding on the limnology and benthic invertebrate ecology of this climate-sensitive Arctic region. This thesis addresses this knowledge gap by examining responses of lake water chemistry (Chapter 1) and littoral benthic invertebrates (Chapter 2) to variation in peak flooding, in addition to examining patterns of metacommunity structure across lakes with differing connectivity to the river (Chapter 3). Using a five-year time series that captured recent extremes in peak flood level, I found that connection time was a dominant factor influencing lake water chemistry because of direct flooding inputs and the effects of spring flooding that carried forward through the growing season. The response of lake chemistry to differing annual peak flood levels differed according to the flooding regime of the lakes. Benthic invertebrate communities sampled over five years in the East Channel were also significantly related to connection time and several of the identified water chemistry variables, indicating that they are sensitive to alterations to flooding hydrology. Analyzing the metacommunity and functional structure of macroinvertebrate communities suggested that the hydrological diversity of lakes contributes to the regional diversity, with aquatic dispersers more limited by dispersal opportunity than aerially dispersing insects. These results suggest the promise of further study of benthic macroinvertebrates in this rapidly changing Arctic delta, the importance of considering habitat diversity for freshwater conservation, and the potential for environmental change in response to climate change in north-flowing northern freshwater systems worldwide.
Book Synopsis Production of Juvenile Atlantic Salmon, Salmo Salar, in Natural Waters by : National Research Council Canada
Download or read book Production of Juvenile Atlantic Salmon, Salmo Salar, in Natural Waters written by National Research Council Canada and published by NRC Research Press. This book was released on 1993 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date information, knowledge and research in progress in scientific fields related to natural production of juvenile Atlantic salmon and some other ecologically similar fluvial salmonids is contained in the 25 papers and 12 abstracts contained in this publication, which were prepared for an international symposium held in St. John's, Newfoundland. Studies relate to stream ecology, invertebrates and predators, habitat improvement, competitive effects, behaviour and dispersal, habitat and production of juvenile salmon, population dynamics and relationships of juvenile salmon estimates to smolt yields. A list of participants at the conference is also provided.
Book Synopsis Invasive Species in Forests and Rangelands of the United States by : Therese M. Poland
Download or read book Invasive Species in Forests and Rangelands of the United States written by Therese M. Poland and published by Springer Nature. This book was released on 2021-02-01 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.
Book Synopsis Eutrophication: causes, consequences and control by : Abid A. Ansari
Download or read book Eutrophication: causes, consequences and control written by Abid A. Ansari and published by Springer Science & Business Media. This book was released on 2010-10-17 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eutrophication continues to be a major global challenge to water quality scientists. The global demand on water resources due to population increases, economic development, and emerging energy development schemes has created new environmental challenges to global sustainability. Eutrophication, causes, consequences, and control provides a current account of many important aspects of the processes of natural and accelerated eutrophication in major aquatic ecosystems around the world. The connections between accelerated eutrophication and climate change, chemical contamination of surface waters, and major environmental and ecological impacts on aquatic ecosystems are discussed. Water quality changes typical of eutrophication events in major climate zones including temperate, tropical, subtropical, and arid regions are included along with current approaches to treat and control increased eutrophication around the world. The book provides many useful new insights to address the challenges of global increases in eutrophication and the increasing threats to biodiversity and water quality.
Book Synopsis Zooplankton Ecology by : Maria Alexandra Teodosio
Download or read book Zooplankton Ecology written by Maria Alexandra Teodosio and published by CRC Press. This book was released on 2020-11-19 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims at providing students and researchers an advanced integrative overview on zooplankton ecology, covering marine and freshwater organisms, from microscopic phagotrophic protists, to macro-jellyfishes and active fish larvae. The first book section addresses zooplanktonic organisms and processes, the second section is devoted to zooplankton spatial and temporal distribution patterns and trophic dynamics, and the final section is dedicated to emergent methodological approaches (e.g., omics). Book chapters include comprehensive synthesis, observational and manipulative studies, and sediment-based analysis, a vibrant imprint of benthic-pelagic coupling and ecosystem connectivity. Most chapters also address the impacts of anticipated environmental changes (e.g., warming, acidification).
Book Synopsis Coral Reefs of the Red Sea by : Christian R. Voolstra
Download or read book Coral Reefs of the Red Sea written by Christian R. Voolstra and published by Springer. This book was released on 2019-05-07 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a complete review and reference work for scientists, engineers, and students concerned with coral reefs in the Red Sea. It provides an up-to-date review on the geology, ecology, and physiology of coral reef ecosystems in the Red Sea, including data from most recent molecular studies. The Red Sea harbours a set of unique ecological characteristics, such as high temperature, high alkalinity, and high salinity, in a quasi-isolated environment. This makes it a perfect laboratory to study and understand adaptation in regard to the impact of climate change on marine ecosystems. This book can be used as a general reference, guide, or textbook.
Book Synopsis Fish Field and Laboratory Methods for Evaluating the Biological Integrity of Surface Waters by : Donald J. Klemm
Download or read book Fish Field and Laboratory Methods for Evaluating the Biological Integrity of Surface Waters written by Donald J. Klemm and published by . This book was released on 1993 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Routledge Handbook of Ocean Resources and Management by : Hance D. Smith
Download or read book Routledge Handbook of Ocean Resources and Management written by Hance D. Smith and published by Routledge. This book was released on 2015-10-16 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive handbook provides a global overview of ocean resources and management by focusing on critical issues relating to human development and the marine environment, their interrelationships as expressed through the uses of the sea as a resource, and the regional expression of these themes. The underlying approach is geographical, with prominence given to the biosphere, political arrangements and regional patterns – all considered to be especially crucial to the human understanding required for the use and management of the world's oceans. Part one addresses key themes in our knowledge of relationships between people and the sea on a global scale, including economic and political issues, and understanding and managing marine environments. Part two provides a systematic review of the uses of the sea, grouped into food, ocean space, materials and energy, and the sea as an environmental resource. Part three on the geography of the sea considers management strategies especially related to the state system, and regional management developments in both core economic regions and the developing periphery. Chapter 23 of this book is freely available as a downloadable Open Access PDF under a Creative Commons Attribution-Non Commercial-No Derivatives 3.0 license. https://www.routledgehandbooks.com/doi/10.4324/9780203115398.ch23
Download or read book Algal Ecology written by and published by Academic Press. This book was released on 1996-06-03 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algae are an important component of aquatic benthic ecosystems because they reflect the health of their environment through their density, abundance, and diversity. This comprehensive and authoritative text is divided into three sections to offer complete coverage of the discussion in this field. The first section introduces the locations of benthic algae in different ecosystems, like streams, large rivers, lakes, and other aquatic habitats. The second section is devoted to the various factors, both biotic and abiotic, that affect benthic freshwater algae. The final section of the book focuses on the role played by algae in a variety of complex freshwater ecosystems. As concern over environmental health escalates, the keystone and pivotal role played by algae is becoming more apparent. This volume in the Aquatic Ecology Series represents an important compilation of the latest research on the crucial niche occupied by algae in aquatic ecosystems. Presents algae as the important player in relation to environmental health Prepared by leading authorities in the field Includes comprehensive treatment of the functions of benthic algae as well as the factors that affect these important aquatic organisms Acts as an important reference for anyone interested in understanding and managing freshwater ecosystems
Book Synopsis Parasite Biodiversity by : Robert Poulin
Download or read book Parasite Biodiversity written by Robert Poulin and published by Smithsonian Institution. This book was released on 2014-05-27 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive, groundbreaking book on the biodiversity of parasites offers a clear and accessible explanation of how parasite biodiversity provides insight into the history and biogeography of other organisms, the structure of ecosystems, and the processes that lead to the diversification of life.
Book Synopsis Ecological Sustainability and Integrity: Concepts and Approaches by : J. Lemons
Download or read book Ecological Sustainability and Integrity: Concepts and Approaches written by J. Lemons and published by Springer Science & Business Media. This book was released on 1997-12-31 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book follows upon earlier work which culminated in the publication of two recent books, Sustainable Development: Science, Ethics, and Public Policy (John Lemons and Donald A. Brown, editors), and Perspectives on Ecological Integrity (Laura Westra and John Lemons, editors). Both of these books also were published by Kluwer Academic Publishers. In this book, we seek to explore more fully the concepts of sustainability and ecological integrity as well as the connections between them. We have divided chapters into three groups. In the first, the concept of sustainability in relation to science, law, and ethics is explored. In the second, concepts of sustainability and ecological integrity are applied to problems in specific natural resources. Finally, in the third group we examine possible approaches to public policy which might include concepts of sustainability and ecological integrity. Overall, we believe that this collection presents a wide variety of perspectives, discussions, and case studies. John Lemons Laura Westra Robert Goodland Editors ix CONTENTS PART I Sustainability in Relation to Science, Law, and Ethics Chapter 1 The Concept of Sustainability: A Critical Approach Lynton K. Caldwell 1. Problems of Definition 2 2. Behavioral Obstacles 4 3. Psychological Obstacles: Seven Deadly Sins of Unsustainability 8 4.
