Distribution Of Unionid Mussels In The Big Thicket Region Of Texas 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 Distribution Of Unionid Mussels In The Big Thicket Region Of Texas PDF full book. Access full book title Distribution Of Unionid Mussels In The Big Thicket Region Of Texas.

Distribution of Unionid Mussels in the Big Thicket Region of Texas

Distribution of Unionid Mussels in the Big Thicket Region of Texas
Author: Alison A. Tarter
Publisher:
Total Pages: 90
Release: 2019
Genre: Freshwater mussels
ISBN:
GET BOOK

Download Distribution of Unionid Mussels in the Big Thicket Region of Texas Book in PDF, ePub and Kindle

The Big Thicket located in Southeast Texas harbors the highest number of regional endemic freshwater mussel species and the highest diversity of unionid mussels in the state, including five state-threatened species. Unfortunately, mussels in this region are threatened by pollution, habitat alteration and destruction due to human impacts caused by petrochemical activities, climatic changes and urbanization. The goals of this project were to (1) survey mussels in the Big Thicket National Preserve, particularly in the poorly surveyed southern portion of the preserve, and (2) to examine historical changes in mussel communities. In addition, DNA samples were taken and the analysis of 97 mussels informed identification of ten species, some of which can be difficult to distinguish morphologically. A total of 39 sites in the Lower Neches River, Village Creek and Pine Island Bayou basins were surveyed. Historical data from 2002 (restricted to Village Creek) and 2014 were available for sub-set of these sites. The survey showed that species richness and mussel densities generally increased from upstream tributaries towards lower Village Creek and the mainstream Neches, where rare and threatened species were mostly found. Evidence for recruitment was mainly found in the backwaters of the lower Neches, which may act as a refuge during flooding. Declines between 2014 and 2018 were most severe in the parts of the Neches basin that most likely experienced the highest shear stress during flooding based on the channel morphology. Declines were also detected when data from 2002 were compared with 2014 suggesting that the exceptional drought in 2011 may have also contributed to long-term declines in Village Creek. Future studies should examine the role of backwaters for recruitment of threatened mussels.

Freshwater Unionid Bivalves in Texas

Freshwater Unionid Bivalves in Texas
Author: Daniel Lawrence Bennett
Publisher:
Total Pages: 240
Release: 2007
Genre: Freshwater mussels
ISBN:
GET BOOK

Download Freshwater Unionid Bivalves in Texas Book in PDF, ePub and Kindle

To determine the current diversity and distribution of unionid bivalves in Texas we surveyed 37 water bodies in 2005-2006 that were previously surveyed by Texas Parks and Wildlife Department. To determine species richness and mussel density we used time searches and quadrat sampling. The highest diversities were found in East Texas (B.A. Steinhagen Reservoir, The Neches Sabine and Angelina rivers, and in Village Creek). To assess the recent changes in unionid abundance and diversity in East Texas we compared results of our survey with previous TPWD surveys and literature data covering a time period from 1980 to 2002. We found no significant changes in the species richness and relative abundance (number of specimens found per man hour) when we analyzed all sites combined for the last 25 years (p=0.39). However, we found more species in rivers than previous surveys (p=0.04), possibly due to a recent drought. Comparisons of current species composition with historical data, from the late 19th and early 20th centuries, at several sites in East Texas prove inconclusive due to differences in sample effort, although marginal declines can be implied.

Freshwater Mussels of Texas

Freshwater Mussels of Texas
Author: Robert G. Howells
Publisher: University of Texas Press
Total Pages: 228
Release: 1996-09
Genre: Nature
ISBN: 9781885696106
GET BOOK

Download Freshwater Mussels of Texas Book in PDF, ePub and Kindle

Species. Freshwater mussels are the most rapidly declining group of animals in North America. This guide represents a first-ofits-kind reference to assist both biologists and naturalists in the identification and study of freshwater mussels. Freshwater Mussels of Texas contains 224 pages with 226 black and white photographs, 144 color photographs and 79 line drawings covering all 52 species found in Texas waters. Introductory sections cover basic anatomy, reproduction.

North American Freshwater Mussels

North American Freshwater Mussels
Author: Wendell R. Haag
Publisher: Cambridge University Press
Total Pages: 523
Release: 2012-08-27
Genre: Nature
ISBN: 0521199387
GET BOOK

Download North American Freshwater Mussels Book in PDF, ePub and Kindle

Synthesizes the ecology and natural history of North American freshwater mussels for scientists, natural resource professionals, students and natural history enthusiasts.

Immersion

Immersion
Author: Abbie Gascho Landis
Publisher: Island Press
Total Pages: 266
Release: 2017-04-13
Genre: Nature
ISBN: 161091807X
GET BOOK

Download Immersion Book in PDF, ePub and Kindle

Abbie Gascho Landis brings readers to a hotbed of mussel diversity, the American Southeast, to seek mussels where they eat, procreate, and, too often, perish. Accompanied often by her husband, a mussel scientist, and her young children, she learned to see mussels on the creekbed, to tell a spectaclecase from a pigtoe, and to worry what vanishing mussels--70 percent of North American species are imperiled--will mean for humans and wildlife alike. Landis shares this journey, traveling from perilous river surveys to dry streambeds and into laboratories where endangered mussels are raised one precious life at a time. Mussels have much to teach us about the health of our watersheds if we step into the creek and take a closer look at their lives. In the tradition of writers like Terry Tempest Williams and Sy Montgomery, Landis gracefully chronicles these untold stories with a veterinarian's careful eye and the curiosity of a naturalist.--

Bibliographia Trichopterorum: 1961-1970

Bibliographia Trichopterorum: 1961-1970
Author: Andrew P. Nimmo
Publisher: Pensoft Publishers
Total Pages: 616
Release: 1996
Genre: Nature
ISBN: 9789546420121
GET BOOK

Download Bibliographia Trichopterorum: 1961-1970 Book in PDF, ePub and Kindle

Ethnobiology

Ethnobiology
Author: E. N. Anderson
Publisher: John Wiley & Sons
Total Pages: 428
Release: 2012-02-14
Genre: Science
ISBN: 111801586X
GET BOOK

Download Ethnobiology Book in PDF, ePub and Kindle

The single comprehensive treatment of the field, from the leading members of the Society of Ethnobiology The field of ethnobiology—the study of relationships between particular ethnic groups and their native plants and animals—has grown very rapidly in recent years, spawning numerous subfields. Ethnobiological research has produced a wide range of medicines, natural products, and new crops, as well as striking insights into human cognition, language, and environmental management behavior from prehistory to the present. This is the single authoritative source on ethnobiology, covering all aspects of the field as it is currently defined. Featuring contributions from experienced scholars and sanctioned by the Society of Ethnobiology, this concise, readable volume provides extensive coverage of ethical issues and practices as well as archaeological, ethnological, and linguistic approaches. Emphasizing basic principles and methodology, this unique textbook offers a balanced treatment of all the major subfields within ethnobiology, allowing students to begin guided research in any related area—from archaeoethnozoology to ethnomycology to agroecology. Each chapter includes a basic introduction to each topic, is written by a leading specialist in the specific area addressed, and comes with a full bibliography citing major works in the area. All chapters cover recent research, and many are new in approach; most chapters present unpublished or very recently published new research. Featured are clear, distinctive treatments of areas such as ethnozoology, linguistic ethnobiology, traditional education, ethnoecology, and indigenous perspectives. Methodology and ethical action are also covered up to current practice. Ethnobiology is a specialized textbook for advanced undergraduates and graduate students; it is suitable for advanced-level ethnobotany, ethnobiology, cultural and political ecology, and archaeologically related courses. Research institutes will also find this work valuable, as will any reader with an interest in ethnobiological fields.