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Effects Of Dam Removal On Resident Fish Movement In Cijiawan River Taiwan
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Book Synopsis Effects of Dam Removal on Resident Fish Movement in Cijiawan River, Taiwan by : Chia-Hsiu Chen
Download or read book Effects of Dam Removal on Resident Fish Movement in Cijiawan River, Taiwan written by Chia-Hsiu Chen and published by . This book was released on 2012 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater fish change their movement patterns in response to natural or anthropogenic changes in habitat. Dam removal, a major restoration practice to restore river longitudinal connectivity, can affect river habitat with changes in flow regimes and morphological changes due to the sudden release of dam-trapped sediments. In Taiwan, a mid-size dam, Cijiawan #1 dam, was removed in 2011 to provide access to upstream habitat for the endangered target species, Taiwan salmon (Oncorhynchus masou formosanus). A three-phase radio telemetry tracking experiment was conducted to identify the movement patterns before, during and after dam removal. Some tagged fish were also displaced downstream to observe homing behavior. The movements of non-displaced fish showed reduced movement over time and persistence of location which indicates that the influence of disturbance due to capture and tagging was temporary. Displaced fish showed significant long distance movement toward their original home range immediately after release, but became as sedentary as non-displaced fish over time. The displaced fish homing behavior was limited by the barrier effect before dam removal, but daily movements and total absolute stream distance covered both increased after dam removal as fish began accessing upstream habitat. During the dam removal phase, fish below the dam moved very little when the heavy machinery was in the stream and then made long distance movements when upstream habitat was accessible after deconstruction. The rapid response of Taiwan salmon in this study confirmed that the new habitat opened by the dam removal project could be utilized almost immediately, but the sensitivity to habitat degradation indicates that extra attention to short-term habitat impacts should be considered for future stream restoration practices.
Download or read book Important Bird Areas in Taiwan written by and published by . This book was released on 2001 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Oaks of Chevithorne Barton by : Michael Heathcoat Amory
Download or read book The Oaks of Chevithorne Barton written by Michael Heathcoat Amory and published by . This book was released on 2009 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Begun in 1984 the oak collection of Chevithorne Barton is the largest and most comprehensive in Britain and almost certainly in the world, with 380 named oaks and over 220 species. This beautifully illustrated book describes and shows oaks from Europe, North Africa, Persia, Tibet, China, Japan, Mexico and the US flourishing deep in the Devon countryside. This book is a must for all tree lovers. With a preface by Michael Heseltine.
Book Synopsis Important Bird Areas in Asia by : S. Chan
Download or read book Important Bird Areas in Asia written by S. Chan and published by . This book was released on 2004-01-01 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiled by S Chan, MJ Crosby, MZ Islam, and AW Tordoff.Birdlife's Red Data Book - Threatened Birds of Asiaidentified that one quarter of all bird species in Asia were aconservation concern, 323 species, about 12% were at risk ofglobal extinction. Clearly it is imperative that important birdareas be identified and then prioritised on the basis ofscientific evidence.Important Bird Areas in Asia is the first comprehensiveinventory of Asia's key sites for birds and biodiversity.Country-by-country, the book details the region's 2,293 ImportantBird Areas (IBAs), of these 976, or 43% are lacking any formalprotection. This book presents a sound basis for the developmentof national conservation strategies and protected area programmes,and highlights areas which should be safeguarded through wisepolicies and land-use planning.Review'...much valuable information for each country...a wonderfulbook' - Alula.
Download or read book Aquatic Oligochaeta written by G. Bonomi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the First International Symposium on Aquatic Oligochaete Biology in Sidney, B. C. , the suggestion was made to hold the second in Pallanza, on Lake Maggiore, at the C. N. R. -Istituto Italiano di Idrobiologia. At the same time it was decided that there should be a symposium every third year. The organization of the symposium was made considerably easier by the Senior Editor's having been in personal contact with several Russian colleagues (courtesy of a kind invitation from the U. S. S. R. Academy of Sciences), the 'Hamburg Group' and the Junior Editor. Correspondence with various students of Oligochaeta also furnished many useful suggestions. The Second International Symposium on Aquatic Oligochaete Biology was therefore held in Pallanza in late September 1982 and was attended by 53 scientists from 16 countries in Europe, North America, Asia and Australia. No review papers were formally invited as this had already been done at the first symposium: all the papers were accordingly allotted the same time for oral presentation. These proceedings contain all papers Hrabe and Slepukhina, which were given in absentia, as it presented at the symposium, including those by was impossible for the authors to join the group. The main topics were taxonomy and evolution of Oligo chaeta, life-cyle and population studies, the role of Oligo chaeta in assessing water pollution, physiolog ical studies, community and distribution studies. Special taxonomic workshops took place in the evenings.
Book Synopsis Aquatic Oligochaete Biology by : Ralph O. Brinkhurst
Download or read book Aquatic Oligochaete Biology written by Ralph O. Brinkhurst and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: After some conversations with Professor Dr. H. Caspers and other participants at the triennial congress of the International Association of Theoretical and Applied Limnology (S. I. L. ) held in Copenhagen, Denmark (1977), the senior editor approached the international delegates at the business meeting for approval of the concept of holding the First International Symposium on Aquatic Oligochaete Biology at Sidney (near Victoria) British Columbia on May 1-4, 1979. The S. I. L. agreed to sponsor such a meeting, and this sponsorship in turn led to the provision of space and technical facilities at the Institute of Ocean Sciences Patricia Bay, the Pacific Regional headquarters of the Ocean and Aquatic Sciences component of the federal Fisheri~s and Oceans Department. The National Research Council of Canada provided travel support for a number of non-Canadian participants. Invitations were sent to as many active workers in the field as the senior editor could name, and in addition two representatives of closely allied fields were invited - Dr. V. Standen who works with closely related but terrestrial species, and Dr. J. Grassle who works with polychaetes but especially with Capitella capitata which is much like an oligochaete in some aspects of its biolog- so much so that the senior editor in his salad days succumbed to some ill-founded advice and described Capitella as a new marine tubificid! The addition of these "outside" influences prevented the group from making a number of unfounded assumptions during discussions, and provided valuable cross-linkages.
Book Synopsis Advances in Earthworm Taxonomy V by : Tomáš Pavlíček
Download or read book Advances in Earthworm Taxonomy V written by Tomáš Pavlíček and published by . This book was released on 2012 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tropical and Sub-Tropical Reservoir Limnology in China by : Bo-Ping Han
Download or read book Tropical and Sub-Tropical Reservoir Limnology in China written by Bo-Ping Han and published by Springer Science & Business Media. This book was released on 2011-09-18 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reservoirs are specific aquatic ecosystems and have complex behaviors of both natural lakes and rivers, regulated significantly by their functions such as flood controlling, hydropower generation, irrigation and fishery. This volume offers a general description of reservoir limnology in tropical and subtropical China. It functions as a window opening to all the aquatic scientists with a main focus on reservoirs in southern China and at the same time also covering several important, large reservoirs such as the Three Gorge Reservoir and Danjiangko Reservoir. Topics discussed are zooplankton, phytoplankton and zoobenthos communities, cyanobateria, nutrient budget, sediments, biogeochemical cycling of mercury, fishery and eutrophication.
Book Synopsis Internal Phosphorus Loading in Lakes by : Bryan Spears
Download or read book Internal Phosphorus Loading in Lakes written by Bryan Spears and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrient enrichment of lakes is a ubiquitous problem, impacting ecological and human health on a global scale by accelerating the pace of eutrophication, often resulting in algal blooms, depleted dissolved oxygen concentrations, and economic harm to surrounding communities. In many lakes, bed sediments are a major but unrecognized source of phosphorus to the water, a process known as internal phosphorus loading. Internal loading is notoriously difficult to measure and manage given the need to access processes operating on and within the lakebed. In addition, climate change threatens to promote internal loading. For example, warming of lakes can increase the release of phosphorus from sediments due to 1) longer and stronger periods of lake stratification resulting in sediment anoxia and 2) enhanced microbial decomposition of organic matter. Degraded water quality not only impairs ecological health but also can influence social pride and community morale. This is the first book dedicated to the understanding of internal phosphorus loading in lakes and examines the causes, the ecological and societal impacts, and options for managing this complex phenomenon. With contributions from leading experts, this edited volume provides a broad view of internal phosphorus loading, methods for measurement, management practices for water quality improvement, case studies from around the world, and recommendations for addressing this growing concern. It is essential reading for environmental and engineering professionals involved in lake and reservoir management, students and faculty in limnology, state and federal authorities involved in water quality regulation, and lakefront homeowners and management boards interested in maintaining lake water quality and managing algal blooms. Key Features * First-ever comprehensive volume on internal phosphorous loading that clearly details what it is and why it occurs * Identifies and explores the drivers of internal phosphorus loading * Provi
