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Book Life History Distribution and Impact of Nonnative Smallmouth Bass Micropterus Dolomieu at Range Boundaries in the Columbia River Basin

Download or read book Life History Distribution and Impact of Nonnative Smallmouth Bass Micropterus Dolomieu at Range Boundaries in the Columbia River Basin written by Erika S. Rubenson and published by . This book was released on 2019 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Riverine distributions of nonnative smallmouth bass (Micropterous dolomieu) are changing in response to climate change, with smallmouth bass upstream extent increasing as temperatures warm to within its thermal tolerances. Although smallmouth bass continue to shift its distribution into new upstream habitat, little is known about the mechanisms that drive or limit distribution changes, its current distributions in the Columbia River Basin, or the potential impacts expanding smallmouth bass may have on juvenile salmonids, each of which I address in this dissertation. Like most ectotherms, each life history stage (i.e., egg, juvenile, adult) of smallmouth bass has unique thermal optimums and limits that may disproportionately affect successful establishment of new self-sustaining populations. In my first two chapters, I examined the effects of increasingly colder temperatures on spawning patterns, reproductive success, and recruitment across a broad (> 60 km) spatial extent in the North Fork John Day River. In my third chapter, I assessed the inter-annual differences in maximum upstream distribution, seasonal changes in local abundances, and seasonal movement patterns of adult bass to assess the role of adult dispersal in range dynamics. Using these data on reproduction, recruitment, and adult movement patterns, I found key behaviors and physiological constraints that limit or drive range expansion and present management strategies that may be useful to managers tasked with preventing future range expansion of smallmouth bass. In my fourth chapter, I developed a species distribution model of smallmouth bass for the Columbia River Basin using a combination of historical distribution data and environmental DNA (eDNA) distribution data collected at predicted range boundaries. Here, I found that smallmouth bass is widely distributed and predicted to overlap with 3-62% of critical salmonid spawning and rearing habitat. Under a moderate climate change scenario, I found that smallmouth bass is predicted to increase its distribution by over two-thirds, highlighting management challenges throughout the Columbia River Basin. Finally, in my fifth chapter I examine potential competition and predation dynamics in a food web that includes smallmouth bass and juvenile Chinook salmon (Oncorhynchus tshawytscha). Here, I found little evidence for a strong predation or competition threat to juvenile Chinook salmon, suggesting that although smallmouth bass is likely to increase its overlap with native salmonids, its greatest impact to salmonids appears to occur in mainstem habitats. Taken together, the five chapters of this dissertation advance the understanding of the physiology, behavior, distribution, and impact of nonnative smallmouth bass in the Columbia River Basin, which will directly contribute to the management of streams home to myriad threatened and endangered native species.

Book The Biology and Ecology of Streams and Rivers

Download or read book The Biology and Ecology of Streams and Rivers written by Alan Hildrew and published by Oxford University Press. This book was released on 2023-06-19 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: The challenges that the world's running water systems now face have never been more numerous or acute; at the same time, these complex habitats remain absolutely crucial to human wellbeing and future survival. If rivers can ever be anything like sustainable, ecology needs to take its place as an equal among the physical sciences such as hydrology and geomorphology. A real understanding of the natural history and ecology of running waters must now be brought even more prominently into river management. The primary purpose of this textbook is to provide the up-to-date overview that students and practitioners will require to achieve this aim. The book's unifying focus is on rivers and streams as ecosystems in which the particular identity of organisms is not the main emphasis but rather the processes in which they are involved - specifically energy flow and the cycling of materials. It builds on the physicochemical foundations of the habitat templet and explores the diversity and adaptations of the biota, progressing from the population and community ecology of organisms and linking them to ecosystem processes and services in the wider biosphere via the complexities of species interactions and food webs. These include water quality and patterns of river discharge, as well as aesthetics, waste disposal, and environmental health. While the book is not primarily focused on application per se, each chapter addresses how humans affect rivers and, in turn, are affected by them. A final, future-oriented chapter identifies key strategic areas and sets a roadmap for integrating knowledge of natural history and ecology into policy and management. The Biology and Ecology of Streams and Rivers is an accessible text suitable for both senior undergraduate and graduate students taking courses in both lotic and general ecology as well as more established researchers, practitioners, managers, and conservationists requiring a concise and contemporary overview of running waters.

Book Patterns and Processes of Life History Variation in the Smallmouth Bass Micropterus Dolomieu microform

Download or read book Patterns and Processes of Life History Variation in the Smallmouth Bass Micropterus Dolomieu microform written by Dunlop, Erin Suzanne and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research explores the degree and causes of life history variation in the smallmouth bass, Micropterus dolomieu. Smallmouth bass are an interesting study species for exploring life history variation for two main reasons: (i) many populations are in various stages of colonization thereby allowing characterization of life history dynamics as a population adapts to a new environment; (ii) they show paternal care, the presence of which may modify patterns of life history response. Variability is examined over a broad scale of geographically diverse populations, between adjacent populations, and temporally within populations. Results indicate that there is a large degree of variation in somatic growth and maturation among smallmouth bass populations and that climate, food availability, and mortality are important drivers of this variation. A significant amount of the among-population differences represent a combination of plastic responses and genetic adaptation to these three forces. Among populations spread over the present North American range of the species, there is a positive relationship between temperature and early growth but the association weakens in non-native populations. On a local scale, food availability and lack of ontogenetic diet shifting appear to have driven much of the phenotypic divergence in growth and maturation between two populations introduced from a common source a century ago. Finally, the results of an individual-based model show that selective mortality can influence population dynamics, somatic growth, and evolution of maturation in a short time span. However, the addition of survival functions associated with parental care reduces the magnitude of evolutionary response. This study underscores the importance of considering population life history as dynamic and capable of showing rapid plastic and/or genetic responses to both natural and human forces.

Book The Smallmouth Bass Micropterus Dolomieui

Download or read book The Smallmouth Bass Micropterus Dolomieui written by United States. Bureau of Land Management and published by . This book was released on 1962 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Smallmouth Bass Micropterus Dolomieui

Download or read book The Smallmouth Bass Micropterus Dolomieui written by and published by . This book was released on 1975 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Reproduction of Smallmouth Bass Micropterus Dolomieui in Bull Shoals Lake Arkansas

Download or read book Reproduction of Smallmouth Bass Micropterus Dolomieui in Bull Shoals Lake Arkansas written by Louis E. Vogele and published by . This book was released on 1981 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smallmouth bass were studied in Bull Shoals Lake to determine the nesting requirements and reproductive capabilities of the species in a reservoir. Underwater observations were conducted weekly in five study areas during the spawning seasons of 1969-76. Length of spawning season was affected by the rate of water temperature rise during the nesting period. Active nests were found at ambient temperatures of 13.3-22.5 degrees Centigrade. Nest were generally on gently sloping rock and gravel bottoms, beside permanent objects such as rocks or sunken logs, and at densities of less than one per 100 m of shoreline.

Book Research Information Needs on Terrestrial Vertebrate Species of the Interior Columbia River Basin and Northern Portions of the Klamath and Great Basins

Download or read book Research Information Needs on Terrestrial Vertebrate Species of the Interior Columbia River Basin and Northern Portions of the Klamath and Great Basins written by Bruce G. Marcot and published by . This book was released on 1997 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effects of Climate Change on the Northward Range Expansion of the Smallmouth Bass Micropterus Dolomieu and the Consequential Impacts on Native Fish Populations

Download or read book The Effects of Climate Change on the Northward Range Expansion of the Smallmouth Bass Micropterus Dolomieu and the Consequential Impacts on Native Fish Populations written by Sapna Sharma and published by . This book was released on 2008 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increases in temperature due to climate change will have large implications for aquatic ecosystems. Warmwater fish species, such as smailmouth bass, Micropterus dolomieu, may have access to additional favourable thermal habitat under increased surface-water temperatures, thereby shifting the northern limit of the distribution of the species further north in Canada and potentially negatively impacting native fish communities. A database comprised of over 50,000 lakes was assembled consisting of data on geography, lake morphology, water chemistry, climate, and fish community composition. Based on a comparison of several statistical approaches (multiple regression, regression tree, artificial neural networks, and Bayesian multiple regression) and several climate-change scenarios, water temperatures were predicted to increase by as much as 18°C by 2100, with the greatest increase in water temperature in northern Canada. By 2100, smallmouth bass thermal habitat is predicted to shift to the north with the majority of Canadian lakes expected to contain suitable thermal habitat. A comparison of logistic regression, classification tree, linear discriminant analysis, and artificial neural networks indicated that smallmouth bass distribution is predicted by winter and summer air temperatures. Climate-change modeling, in conjunction with artificial neural networks, predicted that smallmouth bass will have suitable thermal habitat throughout the majority of aquatic systems in the continental United States and Canada by 2100. The presence of smallmouth bass will negatively impact native fish communities, particularly native lake trout populations. Lake trout populations residing in smaller lakes are more vulnerable to the effects of smallmouth bass establishment due to the decreased presence of alternate prey resources. Examination of the pelagic and littoral forage fish communities identified nearly 9,700 lake trout populations threatened by 2100AD under climate-change scenarios, due to the potential invasion of smallmouth bass. The current range expansion of smallmouth bass has been facilitated by stocking by governmental agencies, unauthorized and accidental introduction by anglers, and dispersal through drainage networks. This stresses the importance of intensifying public education and regulation to limit the potential dispersal of invasive species, such as smallmouth bass.

Book Behavior and Movement of Smallmouth Bass Micropterus Dolomieu in the Forebay of Bonneville Dam Columbia River August December 2020

Download or read book Behavior and Movement of Smallmouth Bass Micropterus Dolomieu in the Forebay of Bonneville Dam Columbia River August December 2020 written by Tobias J. Kock and published by . This book was released on 2021 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Hybrid Swarming of Neosho Bass with Non native Smallmouth Bass in the Upper Illinois River Basin of Oklahoma and Implications for Individual Growth

Download or read book Hybrid Swarming of Neosho Bass with Non native Smallmouth Bass in the Upper Illinois River Basin of Oklahoma and Implications for Individual Growth written by Kobe James White and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent molecular investigations support the distinctiveness of the Neosho Bass (Micropterus velox) of the Ozark Highlands from Smallmouth Bass (M. dolomieu). Like other endemic black basses, Neosho Bass are threatened by hybridization with non-native Micropterus forms. Non-native Smallmouth Bass were stocked in Lake Tenkiller in 1991 and 1992, resulting in introgressive hybridization with Neosho Bass in areas upstream of the impoundment. To inform management and conservation efforts, the main objectives of this thesis were to 1) characterize the spatial extent and directionality of introgressive hybridization, and 2) examine the influences of genetic identity on individual growth. From 2019-2021, specimens were collected longitudinally from localities along the Illinois River, Baron Fork, Caney Creek, Flint Creek, and Lake Tenkiller. We genotyped 1,272 fish with a SNP panel designed to identify Smallmouth Bass, Neosho Bass, and interspecific hybrids. Assignment of genotypes with STRUCTURE, NewHybrids, and introgress revealed an ongoing hybrid swarm in the Illinois River mainstem, with some areas of non-hybrid Neosho Bass remaining in far upstream reaches of smaller tributaries. For the second objective, three independent readers estimated the age of 650 fish using transversely sectioned sagittal otoliths. Fish ranged 67-536 mm in total length and estimated ages of these fish 0-10 years. Length-at-age data was then coupled with genetic results to parameterize von Bertalanffy growth functions. Analyses of von Bertalanffy growth functions revealed that estimated total length of non-hybrid Smallmouth Bass is noticeably larger than that of non-hybrid Neosho Bass beginning at age-1 and becomes increasingly divergent with age. The results of this thesis can be used to guide conservation plans for Neosho Bass across their narrow native range and to inform future management decisions regarding population dynamics of the sport fishery. In the future, we plan to couple our results with mitochondrial DNA (mtDNA) sequencing to provide additional insights into maternal ancestry of hybrids and the potential for directional introgression.

Book The Impact of Alien Invasive Smallmouth Bass Micropterus Dolomieu on the Indigenous Fish of the Rondegat River

Download or read book The Impact of Alien Invasive Smallmouth Bass Micropterus Dolomieu on the Indigenous Fish of the Rondegat River written by Darragh J. Woodford and published by . This book was released on 2005 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: