A Bayesian Network for Prioritizing Restoration of Aquatic Connectivity PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download A Bayesian Network for Prioritizing Restoration of Aquatic Connectivity PDF full book. Access full book title A Bayesian Network for Prioritizing Restoration of Aquatic Connectivity by Eric John Andersen. Download full books in PDF and EPUB format.
Author: Eric John Andersen
Publisher:
ISBN:
Category : Culverts
Languages : en
Pages : 200
Get Book Here
Book Description
Re-establishing connectivity is a primary restoration activity for enhancing the recovery of migratory fishes, but actions are often limited by lack of funds and understanding of the benefits of individual projects. The objective of this study was to develop a Bayesian Network (BN) to assess priorities for restoration of aquatic connectivity as accomplished by replacement of culverts at road stream crossings that may act as passage barriers to winter run Steelhead (Oncorhynchus mykiss) in the North and South Santiam Rivers (state of Oregon). The model predicted the probability of biological benefit obtained by removal or replacement of a culvert. The degree of passage impairment, habitat suitability and probability of habitat use influenced the predicted biological benefit. This model structure was populated with conditional probability table values derived from expert opinion and a Bayesian learning algorithm to produce outcomes based on different model inputs. Both models were then used to assess 141 data scenarios land and fishery managers would likely encounter. Results of the BN indicate that culverts that 1) are barriers to adult and juvenile steelhead, 2) are located in Oregon Department of Environmental Quality (DEQ) designated cold core water habitat, 3) have a high capacity for rearing juvenile fish, and 4) have a high probability of habitat use will provide the highest overall benefit. As anticipated, culverts that are not barriers to upstream migrating fish provided the lowest benefit, regardless of habitat suitability or habitat use. In addition to specific results for the Santiam basin, comparison between the two models and across information scenarios illustrated the sensitivity of such models to various conditions likely to be encountered by decision makers; in general, the two models agreed when all input nodes were engaged by having a state value entered, yet disagreed as fewer input nodes were engaged. The passage impairment of a culvert and the probability of habitat use exerted a strong influence on model output. Finally, this model may serve as a template for providing a coarse evaluation of culverts in other basins or may be a foundation upon which additional nodes may be added.
Author: Eric John Andersen
Publisher:
ISBN:
Category : Culverts
Languages : en
Pages : 200
Get Book Here
Book Description
Re-establishing connectivity is a primary restoration activity for enhancing the recovery of migratory fishes, but actions are often limited by lack of funds and understanding of the benefits of individual projects. The objective of this study was to develop a Bayesian Network (BN) to assess priorities for restoration of aquatic connectivity as accomplished by replacement of culverts at road stream crossings that may act as passage barriers to winter run Steelhead (Oncorhynchus mykiss) in the North and South Santiam Rivers (state of Oregon). The model predicted the probability of biological benefit obtained by removal or replacement of a culvert. The degree of passage impairment, habitat suitability and probability of habitat use influenced the predicted biological benefit. This model structure was populated with conditional probability table values derived from expert opinion and a Bayesian learning algorithm to produce outcomes based on different model inputs. Both models were then used to assess 141 data scenarios land and fishery managers would likely encounter. Results of the BN indicate that culverts that 1) are barriers to adult and juvenile steelhead, 2) are located in Oregon Department of Environmental Quality (DEQ) designated cold core water habitat, 3) have a high capacity for rearing juvenile fish, and 4) have a high probability of habitat use will provide the highest overall benefit. As anticipated, culverts that are not barriers to upstream migrating fish provided the lowest benefit, regardless of habitat suitability or habitat use. In addition to specific results for the Santiam basin, comparison between the two models and across information scenarios illustrated the sensitivity of such models to various conditions likely to be encountered by decision makers; in general, the two models agreed when all input nodes were engaged by having a state value entered, yet disagreed as fewer input nodes were engaged. The passage impairment of a culvert and the probability of habitat use exerted a strong influence on model output. Finally, this model may serve as a template for providing a coarse evaluation of culverts in other basins or may be a foundation upon which additional nodes may be added.
Author: Speed, Robert
Publisher: UNESCO Publishing
ISBN: 9231001655
Category :
Languages : en
Pages : 204
Get Book Here
Book Description
Author: Timothy G. O’Higgins
Publisher: Springer Nature
ISBN: 3030458431
Category : Aquatic ecology
Languages : en
Pages : 567
Get Book Here
Book Description
Aquatic ecosystems are rich in biodiversity and home to a diverse array of species and habitats, providing a wide variety of benefits to human beings. Many of these valuable ecosystems are at risk of being irreversibly damaged by human activities and pressures, including pollution, contamination, invasive species, overfishing and climate change. Such pressures threaten the sustainability of these ecosystems, their provision of ecosystem services and ultimately human well-being. Ecosystem-based management (EBM) is now widely considered the most promising paradigm for balancing sustainable development and biodiversity protection, and various international strategies and conventions have championed the EBM cause and the inclusion of ecosystem services in decision-making. This open access book introduces the essential concepts and principles required to implement ecosystem-based management, detailing tools and techniques, and describing the application of these concepts and tools to a broad range of aquatic ecosystems, from the shores of Lough Erne in Northern Ireland to the estuaries of the US Pacific Northwest and the tropical Mekong Delta.
Author: Andre Botequilha Leitao
Publisher:
ISBN:
Category : Architecture
Languages : en
Pages : 278
Get Book Here
Book Description
Measuring Landscapes introduces a powerful set of concepts and tools, known as landscape metrics, for making conservation and development decisions. These metrics include: patch richness, class area proportion, mean patch size, radius of gyration, contagion, edge contrast, proximity, among others. Taken together, they measure a landscape's structure, form, and change over time, and bring solid scientific data to land use decisions. Measuring Landscapes thus serves to bridge the gap between scientists who study the health of landscapes and the planners and conservationists working to create livable places and environmentally sound habitats. Book jacket.
Author: Atte Moilanen
Publisher: Oxford University Press, USA
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 336
Get Book Here
Book Description
In a coherent and comprehensive set of chapters, a team of leading scientists describe the present state-of-the-art in spatial conservation planning methodology with a focus on operational definitions and methods, supported by the latest technological details and applications of publicly available software.
Author: Shin-ichi Nakano
Publisher: Springer
ISBN: 9811007802
Category : Science
Languages : en
Pages : 129
Get Book Here
Book Description
This volume examines the topic of local biodiversity conservation in the Asia-Pacific region, one of the most rapidly changing areas in the world. With a focus on aquatic systems, this book offers insight on the state of local biodiversity, challenges in management and conservation of biodiversity, and newly developed methods for monitoring biodiversity. In addition, because the service provided by an ecosystem for humans is interlinked with conservation, the final part is dedicated to evaluating the socioeconomic aspect of ecosystem services, with special reference to local biodiversity. In effect, all contributions provide information that is invaluable for effective conservation and sustainable use of biodiversity. This work will interest all stakeholders in biodiversity conservation, including policy makers, NPOs, NGOs, environment-related industries, and biodiversity researchers, not only in the Asia-Pacific region, but also across the entire globe.
Author: Julia Martin-Ortega
Publisher: Cambridge University Press
ISBN: 1107100372
Category : Business & Economics
Languages : en
Pages : 187
Get Book Here
Book Description
This book uses ecosystem services-based approaches to address major global and regional water challenges, for researchers, students, and policy makers.
Author: Elisabetta Manea
Publisher: Frontiers Media SA
ISBN: 2832538843
Category : Science
Languages : en
Pages : 253
Get Book Here
Book Description
Conserving and restoring freshwater and marine ecosystems are priorities addressed by several European and global conservation initiatives. Many management and conservation initiatives have been put in place to support the achievement of declared national and global conservation and sustainability goals. Nonetheless, the extent to which all these initiatives can provide lasting positive effects on conservation and restoration targets is often impaired/limited by the lack of robust baseline data and systematic monitoring, which in turn are constrained by the limited number of long-term monitoring programs and limited dedicated funding. This collection underlines the importance of monitoring in times of global change and shifting baselines and the urgency of boosting conservation strategies to ensure progression towards meeting global conservation objectives. Emphasis is given also to the socio-ecological contexts and dimensions of conservation efforts, and the potential of societal engagement in monitoring practices - a key enabling factor to turn conservation initiatives into practical actions and ecosystem protection.
Author: William J. Mitsch
Publisher: John Wiley & Sons
ISBN: 047028630X
Category : Technology & Engineering
Languages : en
Pages : 309
Get Book Here
Book Description
New focused text introduces readers to wetland ecosystems and systems approaches to studying wetlands With its comprehensive coverage of wetland science, management, and restoration, Mitsch and Gosselink's Wetlands has been the premier reference on wetlands for more than two decades. Now, the coverage of specific wetland ecosystem types from earlier editions of this acclaimed work has been updated, revised, and supplemented with additional content in order to create this new text focusing exclusively on wetland ecosystems. This book now complements Wetlands, Fourth Edition. Following an introduction to ecosystems in general and wetland ecosystems in particular, Wetland Ecosystems examines the major types of wetlands found throughout the world: coastal wetlands, freshwater marshes and forested swamps, and peatlands. The final chapter reviews three fundamental systems approaches to studying wetlands: mesocosms, full-scale experimental ecosystems, and mathematical modeling. This new text features: Updated descriptions of the hydrology, biogeochemistry, and biology of the main types of wetlands found in the world New content introducing general ecosystems, wetland ecosystems, whole ecosystem and mesocosm experiments with wetlands, and systems ecology and modeling A detailed description of the ecosystem services provided by wetlands A broad international scope, including many examples of wetlands located outside North America Two new coauthors offering new perspectives and additional insights into the latest ecosystem and modeling techniques An abundance of illustrations helps readers understand how different biological communities and the abiotic environment in wetland ecosystems interact and function. Tables and text boxes provide at-a-glance summaries of key information. Lastly, each chapter concludes with a list of recommended readings. This text has been designed as an introduction for students and professionals in wetland ecology and management, general ecology, environmental science, and natural resource management.
Author: Gerry Closs
Publisher: Cambridge University Press
ISBN: 1107040116
Category : Nature
Languages : en
Pages : 601
Get Book Here
Book Description
A global assessment of the current state of freshwater fish biodiversity and the opportunities and challenges to conservation.
