Local Habitat Influence On Rusty Crayfish Orconectes Rusticus Invasion In Les Cheneaux Islands Michigan 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 Local Habitat Influence On Rusty Crayfish Orconectes Rusticus Invasion In Les Cheneaux Islands Michigan PDF full book. Access full book title Local Habitat Influence On Rusty Crayfish Orconectes Rusticus Invasion In Les Cheneaux Islands Michigan.
Author | : Tracy L. Jones |
Publisher | : |
Total Pages | : 32 |
Release | : 2005 |
Genre | : Crayfish |
ISBN | : |
Download Local Habitat Influence on Rusty Crayfish (orconectes Rusticus) Invasion in Les Cheneaux Islands, Michigan Book in PDF, ePub and Kindle
Author | : Robert C. Homan |
Publisher | : |
Total Pages | : 163 |
Release | : 2020 |
Genre | : Crayfish |
ISBN | : |
Download Creating a Distribution Model of Invasive Rusty Crayfish (Faxonius Rusticus) in Michigan Streams Using Publically Accessible Data Book in PDF, ePub and Kindle
The purpose of this thesis is to create a predictive model of habitat suitability for the invasive rusty crayfish (Faxonius rusticus) throughout the state of Michigan. F. rusticus often outcompete and extirpate native crayfish species, so understanding their habitats of success is instrumental in monitoring vulnerable ecosystems. Michigan State University and the Michigan DNR conducted extensive field surveys across 461 streams sites from 2014-2016. This project compares this field data set to data from publicly available national datasets with the purpose of revealing the ecosystems most vulnerable to the introduction of F. rusticus. The pattern of F. rusticus habitat at a local (100 acres) scale and landscape (1000 acres) scale are determined by comparing the current locations of the species in Michigan against a number of variables quantifying the physical geography of the locations that may affect the spread, growth and survivability of these crayfish. The presence of F. rusticus is also compared to the presence/absence of other species at each surveyed site. An Artificial Neural Network (ANN) model using variables from Soil Survey Geographic Database (SSURGO) and National Land Cover Database (NLCD) datasets found 45 stream locations vulnerable to F. rusticus invasion. This model also determines the variables that have the greatest influence on the model at the center of this research.
Author | : Mael Glon |
Publisher | : |
Total Pages | : 178 |
Release | : 2016 |
Genre | : Crayfish |
ISBN | : |
Download Advances in the Invasion Ecology of Rusty Crayfish, Orconectes Rusticus, in the Great Lakes Basin Book in PDF, ePub and Kindle
Author | : Jason Thomas Buckley |
Publisher | : |
Total Pages | : 178 |
Release | : 2016 |
Genre | : Crayfish |
ISBN | : |
Download Understanding Rusty Crayfish (Orconectes Rusticus) Distribution Patterns and Removal Strategies Within a Great Lake System Book in PDF, ePub and Kindle
Author | : Catherine L. Hein |
Publisher | : |
Total Pages | : 174 |
Release | : 2004 |
Genre | : |
ISBN | : |
Download Rusty Crayfish (orconectes Rusticus) Population Dynamics During Three Years of Intense Removal in Sparkling Lake, Wisconsin Book in PDF, ePub and Kindle
Author | : Mathis Loïc Messager |
Publisher | : |
Total Pages | : 153 |
Release | : 2017 |
Genre | : |
ISBN | : |
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 | : Mitchell Douglas Lovgren |
Publisher | : |
Total Pages | : 86 |
Release | : 2011 |
Genre | : Biological invasions |
ISBN | : |
Download Context-dependent Invasion Success of Rusty Crayfish (Orconectes Rusticus) in Streams Book in PDF, ePub and Kindle
Author | : Carrie L. Burkholder |
Publisher | : |
Total Pages | : 35 |
Release | : 2000 |
Genre | : Crayfish |
ISBN | : |
Download Crayfish Survey of Lancaster County Book in PDF, ePub and Kindle
Author | : Brian Michael Roth |
Publisher | : |
Total Pages | : 216 |
Release | : 2005 |
Genre | : |
ISBN | : |
Download An Investigation of Exotic Rusty Crayfish (Orconectes Rusticus) and Rainbow Smelt (Osmerus Mordax) Interactions in Lake Food Webs Book in PDF, ePub and Kindle
Author | : Cassie Marie Dresser |
Publisher | : |
Total Pages | : 116 |
Release | : 2013 |
Genre | : Introduced invertebrates |
ISBN | : |
Download Mechanisms of Rusty Crayfish Invasion in the Upper Susquehanna River Basin Book in PDF, ePub and Kindle