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Author: Hugo P. Castello
Publisher:
ISBN:
Category : Fishes
Languages : es
Pages : 19
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Book Description
Author: Hugo P. Castello
Publisher:
ISBN:
Category : Fishes
Languages : es
Pages : 19
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Book Description
Author: Kathleen Sullivan Sealey
Publisher:
ISBN:
Category : Marine biodiversity conservation
Languages : en
Pages : 148
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Book Description
Author: Ulrich Seeliger
Publisher: Springer Science & Business Media
ISBN: 3642604676
Category : Science
Languages : en
Pages : 317
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Book Description
Subtropical convergence regions in the southwestern Atlantic have a high biological productivity, and are important as nursery and feeding areas and as reproduction grounds for fishery stocks of subtropical and antarctic origin. This book represents the first multidisciplinary treatise of this large and complex marine ecosystem. It analyses how subtropical convergence and land-sea interactions influence the coast, and sea and their biota. Synthesizing the rapidly expanding information, it provides a comprehensive appraisal of the biological resources, an assessment of their sustainable exploitation, and an evaluation of oceanographic processes. An inventory of all marine taxa in the southwestern Atlantic is included as an appendix.
Author: Joachim Carolsfeld
Publisher: World Bank Publications
ISBN: 1552501140
Category : Nature
Languages : en
Pages : 384
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Book Description
Fish species that migrate within the great rivers of South America support important local fisheries but are little known outside their native range. This book represents the first collection of the work of local scientific experts on these remarkable fish. The authors cover the Upper Parani, Paraguay-Parani, Uruguay and Suo Francisco basins in Brazil, as well as the Brazilian and Colombian Amazon. They discuss not only the principal migratory species and their fascinating relationship with the water cycle in the rivers and wetlands, but also the fisheries they support, and their often precarious conservation status."
Author: David Dudgeon
Publisher: Elsevier
ISBN: 0080557171
Category : Science
Languages : en
Pages : 343
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Book Description
Tropical Stream Ecology describes the main features of tropical streams and their ecology. It covers the major physico-chemical features, important processes such as primary production and organic-matter transformation, as well as the main groups of consumers: invertebrates, fishes and other vertebrates. Information on concepts and paradigms developed in north-temperate latitudes and how they do not match the reality of ecosystems further south is expertly addressed. The pressing matter of conservation of tropical streams and their biodiversity is included in almost every chapter, with a final chapter providing a synthesis on conservation issues. For the first time, Tropical Stream Ecology places an important emphasis on viewing research carried out in contributions from international literature. - First synthetic account of the ecology of all types of tropical streams - Covers all of the major tropical regions - Detailed consideration of possible fundamental differences between tropical and temperate stream ecosystems - Threats faced by tropical stream ecosystems and possible conservation actions - Descriptions and synstheses life-histories and breeding patterns of major aquatic consumers (fishes, invertebrates)
Author: Maurice Kottelat
Publisher: World Bank Publications
ISBN: 9780821338087
Category : Science
Languages : en
Pages : 78
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Book Description
World Bank Discussion Paper No. 337. Draws on household survey data from 87 rural villages in Bangladesh to examine the contribution that government family planning programs, as well as other health care interventions, have made toward the recent reduction in fertility by increasing contraceptive use and reducing infant mortality. The paper suggests that the programs have been effective and finds that targeted credit program placement, such as the Grameen Bank and the Bangladesh Rural Advancement Committee (BRAC), contributed to the effort as well.
Author: Chris D. Metcalfe
Publisher: Routledge
ISBN: 1000069737
Category : Nature
Languages : en
Pages : 229
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Book Description
This book provides insight into the hydrology, ecosystem services and management of water resources in the Paraná River basin, including the importance of water to the socio-economic development of the countries within the watershed. Running through Brazil. Paraguay and Argentina, the Paraná River and its watershed is home to some of South America's major population centers as well as important ecosystems threatened by development. At the same time, the river is a major resource driving the economies of the nations within its boundaries. This volume examines the impacts of environmental degradation, and the tradeoffs between the energy sector and the maintenance of ecosystem services. In particular, it focuses on the threats from development to sensitive ecosystems within the basin and the challenges of transboundary management of water resources. In addition to presenting wider perspectives on water management, the volume specifically covers water infrastructure, aquatic ecosystems, water quality, geomorphological influences and the impact of climate change. Finally, by assessing each country's current status in meeting the Sustainable Development Goals this volume provides a timely analysis as national governments within the basin are becoming increasingly concerned about the sustainability of the freshwater ecosystems within the Paraná River basin. This book will be of great interest to students and scholars of water and natural resource management, environmental policy, sustainable development and Latin American studies. It will also be relevant to water management professionals.
Author: Allan F. O'Connell
Publisher: Springer Science & Business Media
ISBN: 4431994955
Category : Science
Languages : en
Pages : 279
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Book Description
Remote photography and infrared sensors are widely used in the sampling of wildlife populations worldwide, especially for cryptic or elusive species. Guiding the practitioner through the entire process of using camera traps, this book is the first to compile state-of-the-art sampling techniques for the purpose of conducting high-quality science or effective management. Chapters on the evaluation of equipment, field sampling designs, and data analysis methods provide a coherent framework for making inferences about the abundance, species richness, and occupancy of sampled animals. The volume introduces new models that will revolutionize use of camera data to estimate population density, such as the newly developed spatial capture–recapture models. It also includes richly detailed case studies of camera trap work on some of the world’s most charismatic, elusive, and endangered wildlife species. Indispensible to wildlife conservationists, ecologists, biologists, and conservation agencies around the world, the text provides a thorough review of the subject as well as a forecast for the use of remote photography in natural resource conservation over the next few decades.
Author: J. Csirke
Publisher: Bernan Press(PA)
ISBN:
Category : Fisheries
Languages : en
Pages : 158
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Book Description
The state of the main fishery resources exploited by the offshore fleets in the South-West Atlantic is examined and some suggestions are made regarding research and management of the offshore fisheries in the region. Common hake (Merluccius hubbsi) is mostly caught in the northern Patagonian Shelf and off the River Plate Basin area and the resource seems to be lightly to fully exploited. Southern blue whiting (Micromesistius australis) is mostly caught over the Patagonian Shelf and Slope around the Falkland Islands (Malvinas) and the resource seems to be lightly to moderately exploited. Shortfin squid (Illex argentinus) is mostly caught in the offshore Patagonian Shelf and Slope from the area off the River Plate to the northern part of the Falkland Islands (Malvinas), the abundance and annual catches are highly variable and until 1985 the resource was reasonably exploited but it is likely that the increased fishing effort in 1986 may have driven the stock to an overfishing situation. A variable fishing effort policy is suggested to manage this fishery in view of the great fluctuations in recruitment strength. It seems that the common squid (Loligo sp.) stock is fully exploited with a high probability of becoming overexploited. Some general aspects regarding the state of other fish resources and of other possible effects of these offshore fisheries are also examined.
Author: Carl J. Walters
Publisher: Princeton University Press
ISBN: 0691214638
Category : Nature
Languages : en
Pages : 448
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Book Description
Quantitative modeling methods have become a central tool in the management of harvested fish populations. This book examines how these modeling methods work, why they sometimes fail, and how they might be improved by incorporating larger ecological interactions. Fisheries Ecology and Management provides a broad introduction to the concepts and quantitative models needed to successfully manage fisheries. Walters and Martell develop models that account for key ecological dynamics such as trophic interactions, food webs, multi-species dynamics, risk-avoidance behavior, habitat selection and density-dependence. They treat fisheries policy development as a two-stage process, first identifying strategies for varying harvest in relation to changes in abundance, then finding ways to implement such strategies in terms of monitoring and regulatory procedures. This book provides a general framework for developing assessment models in terms of state-observation dynamics hypotheses, and points out that most fisheries assessment failures have been due to inappropriate observation model hypotheses rather than faulty models for ecological dynamics. Intended as a text in upper division and graduate classes on fisheries assessment and management, this useful guide will also be widely read by ecologists and fisheries scientists.
