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| Author | : Shane N. Jones |
| Publisher | : |
| Total Pages | : 132 |
| Release | : 2004 |
| Genre | : Crayfish |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 324 |
| Release | : 2004 |
| Genre | : Dissertations, Academic |
| ISBN | : |
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
| Author | : Oklahoma Academy of Science |
| Publisher | : |
| Total Pages | : 212 |
| Release | : 2008 |
| Genre | : Science |
| ISBN | : |
Vols. 1-49 are Proceedings of the 1st-57th annual meetings.
| Author | : Christopher Alan Taylor |
| Publisher | : |
| Total Pages | : 232 |
| Release | : 2004 |
| Genre | : Nature |
| ISBN | : |
| Author | : Matthew Stephen Nolen |
| Publisher | : |
| Total Pages | : 124 |
| Release | : 2012 |
| Genre | : Crayfish |
| ISBN | : 9781267794550 |
The Ozark faunal region of Missouri and Arkansas harbors a high level of aquatic biological diversity, especially in regards to endemic crayfish. Orconectes eupunctus, Orconectes marchandi, and Cambarus hubbsi are three such endemics that are threatened by a limited natural distribution and the invasions of Orconectes neglectus. I sought to determine how natural and anthropogenic factors influence these three species across multiple spatial scales. Local and landscape data were used in decision tree analyses (CART) to determine their influence effect on presence/absence and density of the three species. Predictive models were validated using k-fold cross validation. O. eupunctus presence was positively associated with factors related to stream size, current velocity, and spring discharge. Orconectes marchandi presence was predicted primarily by dolomite geology and water chemistry metrics, both of which may be related to spring flow volume. Cambarus hubbsi was associated with factors related to stream size and spring flow volume, with highest densities occurring in deep waters. Models predicting crayfish presence/absence consistently outperformed random models. Orconectes eupunctus was the rarest of the three species, occurring at only 9 sites. Orconectes marchandi was restricted to the Spring River drainage, and C. hubbsi was found in all three drainages. The models were effective in modeling rare crayfish species and the results were consistent with previous observations of the three species. Conservation attention may be necessary to protect groundwater resources and to safeguard against further invasions of O. neglectus.
| Author | : Felipe Bezerra Ribeiro |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2020 |
| Genre | : Crayfish |
| ISBN | : 9781536169416 |
Crayfish are one of the most iconic freshwater crustacean groups of the world. The wide range of biological adaptations of the freshwater crayfish to the limnetic ecosystems is surprising, as is there is high potential of some taxa to become invasive species. There is a constant growing interest in develop research with freshwater crayfish. They can be an important food source in several countries, the aquarium pet trade and cultural importance, in addition to the presence of several imperiled species. This book brings important reviews of some aspects of diversity, biological features, evolution, habitat characteristics, behavior and conservation strategies of freshwater crayfish, including native taxa, especially endemic from South America, New Guinea and North America, and non-indigenous species. In South American, new species have been discovered in recent years and are classified in threat categories, indicating the need of more studies regarding taxonomy and conservation. For New Guinean species, data about their exploitation by humans and further perspectives about the improvement of conservation practices are presented. In relation to the North American crayfish, this book brings information about some aspects of biology and behavior of the burrowing species Procambarus acanthophorus. A global assessment and future perspectives for all alien crayfish species are also presented in this book. Regarding the partenogenetic marbled crayfish, Procambarus virginalis, the book brings an extensive review covering aspects of detection history, biology, ecology, evolution, systematics and utilization of this species in the world. In additon, an overview of integrative taxonomy studies and cryptic diversity in crayfish is also presented
| Author | : Guenter A. Schuster |
| Publisher | : University of Alabama Press |
| Total Pages | : 519 |
| Release | : 2022-04-19 |
| Genre | : Nature |
| ISBN | : 0817321063 |
"This book represents the most in-depth treatment of crayfishes for the state of Alabama to date. Alabama is currently known to host 99 species of crayfishes. The findings in this book are based on more than 9,000 records gathered from across the entire state. The authors collected specimens and data from all of Alabama's major and minor waterways and lakes, as well as specialized habitats such as burrows, roadside ditches, marshes, swamps, and temporary autumnal ponds. They visited all the major museums with holdings of crayfish specimens from Alabama, yielding a list of historical records including 4,259 specimen lots from approximately 2,200 unique locations. These records were used to build a database containing all available specimen metadata, including, but not limited to: species identification, number of individuals collected, location, date of collection, names of collectors, who identified the specimens, and the museum in which they are stored. Field work was conducted over a 14-year period during which a total of 4,487 specimen lots were collected and added to the database from approximately 2,600 unique locations sampled across Alabama. Prior to this book, no single comprehensive book or reference has ever been published on the crayfishes of Alabama. This book compiles 166 years of crayfish distributional and biological data for the 99 known Alabama species. It begins with chapters on the physiography and waterways of Alabama. One chapter discusses the general distributional patterns and habitat associations of Alabama crayfishes. Subsequent chapters discuss crayfish biology, ecology, conservation, and anatomy. Detailed species accounts include descriptions of morphological characters, life color, maximum size, comparative species, distribution and habitat, biology, crayfish associates, and conservation status. Color photographs, morphological plates, and dot maps showing distributions are included for each species; for many species, multiple color photos demonstrate the known color variations within each species. An illustrated key is provided to guide the identification of all 99 species. As the most up-to-date and comprehensive source of information on Alabama crayfishes to date, "Crayfishes of Alabama" provides a new perspective on Alabama's unique place as a biodiversity hotspot. It will be of lasting value to aquatic biologists and ecologists throughout the Southeast and crayfish biologists around the world, as well as of interest to natural resource managers, aquaculture farmers, and naturalists"--
| Author | : Thomas Simon |
| Publisher | : Nova Science Publishers |
| Total Pages | : 0 |
| Release | : 2016 |
| Genre | : Crayfish |
| ISBN | : 9781634853651 |
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.
| Author | : Joseph J. Dyer |
| Publisher | : |
| Total Pages | : 109 |
| Release | : 2014 |
| Genre | : |
| ISBN | : |
Humans have the ability to impact their environment more than any other animal on the planet. Our activities can alter the environment to the point that it is unsuitable to the native species resulting in a loss of biodiversity. Scientist now understand the importance of biodiversity and have begun to call for the conservation of vulnerable species. Species that are narrowly endemic are considered to be vulnerable because they use specific habitats that are highly susceptible to human disturbance. The components to species conservation are 1.) delineate the spatial distribution of the species, 2.) understand how the species interacts with its environment, and 3.) employ management strategies based on the ecology of the species. In this study, I investigated several crayfish species that are endemic to the Ouachita Mountains in Oklahoma and Arkansas. I established the spatial distributions of the crayfish using Maximum Entropy species distribution modeling. I then investigated crayfish habitat use with quantitative sampling and a movement study. Finally, I studied the ability of crayfish to burrow under different conditions. I found that crayfish distribution at the landscape scale is driven by climate, geology and elevation. In general, the crayfish in my study occurred above 300 m elevation where the geology was dominated by sandstone and shale, and rainfall totals were the highest. My quantitative data indicated that crayfish did not select for specific habitat types at the reach scale; however, crayfish appeared to use shallow and dry habitat even as streams dried. There was a lot of variability in the movement study but crayfish tended to burrow in response to drought. In my burrowing experiments I found that pebble substrate can restrict crayfish burrowing more than cobble substrate. I also found that fine sediment restricts crayfish burrowing ability regardless of substrate size. The combination of sedimentation and climate change is likely to have a negative impact on these crayfish.
| Author | : Tadashi Kawai |
| Publisher | : CRC Press |
| Total Pages | : 666 |
| Release | : 2015-08-05 |
| Genre | : Science |
| ISBN | : 1466586400 |
For their great commercial importance as a human food delicacy, crayfish are now becoming of wider interest to molecular biologists, and also to conservationists due to the fact that in some countries many of the native crayfish species are under threat from human activity, disease, and competition from other introduced crayfish species. Helmed by
