Distribution And Biodiversity Of Crayfish In The Upper Susquehanna River Watershed With Emphasis On The Invasive Crayfish Orconectes Rusticus PDF Download
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Author | : |
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Total Pages | : 142 |
Release | : 2013 |
Genre | : Crayfish |
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Download Distribution and Biodiversity of Crayfish in the Upper Susquehanna River Watershed with Emphasis on the Invasive Crayfish Orconectes Rusticus Book in PDF, ePub and Kindle
Author | : Keith Lawrence Sorenson |
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Total Pages | : |
Release | : 2012 |
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Download Comparative Population Biology of Native and Invasive Crayfish in the John Day River, Oregon, USA Book in PDF, ePub and Kindle
Author | : Cassie Marie Dresser |
Publisher | : |
Total Pages | : 116 |
Release | : 2013 |
Genre | : Introduced invertebrates |
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Download Mechanisms of Rusty Crayfish Invasion in the Upper Susquehanna River Basin Book in PDF, ePub and Kindle
Author | : Jack L. Dean |
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Total Pages | : 20 |
Release | : 1969 |
Genre | : Aquatic weeds |
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Download Biology of the Crayfish Orconectes Causeyi and Its Use for Control of Aquatic Weeds in Trout Lakes Book in PDF, ePub and Kindle
Sumerged aquatic plants limit the suitability for trout management of many shallow lakes in the Southwest. Control of these weeds has been achieved by the introduced crayfish Orconectes causeyi. The life history, ecology, and weed-control activities of the crayfish are discussed. Abundant crayfish populations occur over a wide range of elevations in permanent well-oxygenated ponds, lakes and streams where predaceous warm-water fishes are scarce. Weed control is proportional to the crayfish population and proximity of a rocky substrate which is preferred habitat. This crayfish is a tertiary burrower establishing relatively shallow burrows for hibernation and egg hatching periods. It has not damaged dams or irrigation ditches and has been compatible with local agriculture.
Author | : Ashley K. Baldridge |
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Total Pages | : 155 |
Release | : 2013 |
Genre | : |
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Download Invasive Rusty Crayfish (Orconectes Rusticus) Book in PDF, ePub and Kindle
Author | : Mathis Loïc Messager |
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Total Pages | : 153 |
Release | : 2017 |
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Download Understanding and Predicting the Leading Edge Dynamics of Invasive Rusty Crayfish (Orconectes Rusticus) in the John Day River Book in PDF, ePub and Kindle
Continued ecological impacts of invasive species on freshwater ecosystems is one of the main challenges confronting ecologists and decision makers in conserving biodiversity and ecosystem function today. Efforts to prohibit the initial introduction of nonnative species are widely recognized to be the most cost-effective management and policy strategy. However, when aquatic invasive species become established and start spreading through the landscape, efforts to slow their proliferation remain severely limited by a lack of adequate forecasting tools and understanding of their secondary spread. My thesis aims to address these challenges by improving our understanding of and predicting the leading edge dynamics of the invasive rusty crayfish Orconectes rusticus (now Faxonius rusticus) in the John Day River (JDR) basin, a major tributary of the Columbia River in northeastern Oregon. In Chapter 1, I demonstrate the use of a spatially explicit individual-based model to recreate the invasion history of rusty crayfish in the JDR and forecast its future distribution. This study shows that controlling the spread of invasive species is possible even after their establishment, when control efforts can be effectively allocated, and that spatially explicit individual-based models can provide unique insight into the secondary spread of aquatic invasive species and concretely support decision makers in choosing optimal control strategies. Chapter 2 investigates whether phenotypic differences exist between rusty crayfish individuals at the boundary of their invasion range compared to their conspecifics closer to their initial location of introduction. I show that rusty crayfish in the JDR have developed less competitive morphology and better physiological condition as they spread towards the edge of their current invasion range and feed lower in the food web in invasion front populations than in core areas. By accounting for variations in temperature, primary productivity, and macroinvertebrate biomass throughout the invasion gradient of rusty crayfish, my research suggests that low conspecific densities and natural selection by spatial sorting are the primary drivers of these phenotypic changes, which suggests that these trends are likely to grow stronger over time as rusty crayfish keep spreading. Together, these chapters not only improve our understanding of the leading edge dynamics of aquatic invasive species such as rusty crayfish but also improve our ability to control their spread and reduce their impact on invaded ecosystems.
Author | : Shane N. Jones |
Publisher | : |
Total Pages | : 132 |
Release | : 2004 |
Genre | : Crayfish |
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Download Distribution, Habitat Use, and Life History Characteristics of Three Crayfish Species from the Upper Kiamichi River Watershed Book in PDF, ePub and Kindle
Author | : Tracy L. Jones |
Publisher | : |
Total Pages | : 32 |
Release | : 2005 |
Genre | : Crayfish |
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Download Local Habitat Influence on Rusty Crayfish (orconectes Rusticus) Invasion in Les Cheneaux Islands, Michigan Book in PDF, ePub and Kindle
Author | : Mitchell Douglas Lovgren |
Publisher | : |
Total Pages | : 86 |
Release | : 2011 |
Genre | : Biological invasions |
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Download Context-dependent Invasion Success of Rusty Crayfish (Orconectes Rusticus) in Streams Book in PDF, ePub and Kindle
Author | : Thomas Simon |
Publisher | : Nova Science Publishers |
Total Pages | : 0 |
Release | : 2016 |
Genre | : Crayfish |
ISBN | : 9781634853651 |
Download Geographic Distribution, Ecological Impact, and Conservation Strategies for North American Crayfish Book in PDF, ePub and Kindle
This is a contribution to the conservation of members of the family Cambaridae. This book is focused on the evaluation of geographic changes caused by landscape scale and land use change that has impacted the ecology of North American crayfish species. The book includes chapters on geographic distributions, conservation strategies, and effects of contaminants on crayfish structure and function. Contributors include a variety of students associated with the Editor, as well as original contributions from the Editor's colleagues. From the conceptual frameworks to the case studies, Geographic Distribution, Ecological Impact, and Conservation Strategies for North American Crayfish will provide important considerations to assist in the conservation and protection of crayfish, with emphasis on stressors and actions necessary to protect and restore crayfish habitats and populations. This book is necessary for environmental and natural resource managers, researchers, and governmental agencies tasked with the protection, restoration, and management of wildlife populations.