Download or read book The Effect of Streamflow on the Short term Carrying Capacity of a Stream for Juvenile Smallmouth Bass written by Troy G. Zorn and published by . This book was released on 1993 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Streamflow on the Short term Carrying Capacity of a Stream for Juvenile Smallmouth Bass written by Troy G. Zorn and published by . This book was released on 1993 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Institute for Fisheries Research Report Michigan Institute for Fisheries Research written by and published by . This book was released on 1998 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fisheries Research Report written by and published by . This book was released on 1992 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North American Journal of Fisheries Management written by and published by . This book was released on 1995 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manual of Fisheries Survey Methods II written by and published by . This book was released on 2000 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Reports for Projects F 35 R and F 53 R written by Michigan Sport Fish Restoration Program and published by . This book was released on 1992 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Hydrology on the Growth and Recruitment of Stream Fish in the Eastern Broadleaf Province of Minnesota written by Eric J Krumm and published by . This book was released on 2016 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT Effects of Hydrology on the Growth and Recruitment of Stream Fish in the Eastern Broadleaf Province of Minnesota Eric J. Krumm Master of Science Degree, Department of Biological Sciences Minnesota State University, Mankato 2016 Agricultural practices and urban development have altered streamflows within the Eastern Broadleaf Province of Minnesota. Stream-flow alteration can produce significant changes in native freshwater communities. Therefore, knowledge of streamflow effects on representative freshwater populations and communities within the province are needed to maintain ecological integrity. Fish community and population dynamics often display predictable responses to flow regimes, which can make fishes model organisms for examining flow-ecology relationships. In lotic systems, annual variation in streamflow can influence the annual growth and recruitment of fishes. Understanding the growth and recruitment of fish populations is essential for management and conservation efforts. Growth can affect population size structure and sexual maturation, while recruitment can affect the abundance, and genetic diversity of a population. Recruitment was quantified using studentized residuals from weighted catch-curve regressions as a measure of year-class strength. Relationships between annual streamflow magnitude and variability and the recruitment of the three species of interest were identified according to species-specific traits. I quantified the growth of Smallmouth Bass Micropterus dolomieu, Rock Bass Ambloplites rupestris, and Northern Hogsucker Hypentelium nigricans populations with mixed-effects growth models. Data from streams exhibiting growth-year effects were used to examine relationships between summer-high-flow duration and annual fish growth. Little evidence was found for either long-term or short-term flow effects on recruitment during the adult spawning or juvenile rearing periods. The recruitment of nest-building and benthic-lithophilous fishes was not significantly related to long-term-spawning-period flow magnitude for the majority (i.e., 10 of 14) of streams, and was not significantly related to short-term-spawning-period flow magnitude at any of the 14 streams. Recruitment of fishes exhibiting cruiser, maneuverer, and benthic-hugger locomotion morphologies was not significantly related to long-term-rearing-period flow variability for the majority (i.e., 12 of 14) of streams, and was not related to short-term-rearing-period flow variability for any of the 14 streams. Growth was attributed to age and individual fish effects for 11 of the 28 fish populations among species. Most populations that exhibited growth-year effects among streams did not show a significant relationship between growth and the duration of summer-high flows (i.e., 4 of 11 populations). Temperature regimes, as well as the timing, magnitude, and frequency of flows may have contributed to differences in the annual recruitment and growth of fishes among some of the streams in this study. However, minimal growth-year effects observed at the majority of my streams suggest that biotic factors (e.g., fish age, genetic differences) may play a large role in determining the growth rates of fishes within the streams studied.
Download or read book Michigan Documents written by and published by . This book was released on 1993 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The First International Smallmouth Bass Symposium written by and published by . This book was released on 1991 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Beaver written by Dietland Müller-Schwarze and published by Cornell University Press. This book was released on 2003 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beavers can and do dramatically change the landscape. The beaver is a keystone species their skills as foresters and engineers create and maintain ponds and wetlands that increase biodiversity, purify water, and prevent large-scale flooding. Biologists have long studied their daily and seasonal routines, family structures, and dispersal patterns. As human development encroaches into formerly wild areas, property owners and government authorities need new, nonlethal strategies for dealing with so-called nuisance beavers. At the same time, the complex behavior of beavers intrigues visitors at parks and other wildlife viewing sites because it is relatively easy to observe.In an up-to-date, exhaustively illustrated, and comprehensive book on beaver biology and management, Dietland Muller-Schwarze and Lixing Sun gather a wealth of scientific knowledge about both the North American and Eurasian beaver species. The Beaver is designed to satisfy the curiosity and answer the questions of anyone with an interest in these animals, from students who enjoy watching beaver ponds at nature centers to homeowners who hope to protect their landscaping. Photographs taken by the authors document every aspect of beaver behavior and biology, the variety of their constructions, and the habitats that depend on their presence. Beaver facts: Just as individual beavers shape their immediate surroundings, so did the distribution of beavers across North America influence the paths of English and French explorers and traders. As a result of the fur trade, beavers were wiped out across large areas of the United States. Reintroduction efforts led to the widespread establishment of these resilient animals, and now they are found throughout North America, Europe, and parts of the southern hemisphere. Beaver meadows provided early settlers with level, fertile pastures and hayfields. Based on the fossil record, the smallest extinct beaver species were the size of a muskrat, and the largest may have reached the size of a black bear (five to six times as large as today's North American beavers). Beaver-gnawed wood has been found alongside the skeleton of a mastodon. Some beavers remain in the home lodge for an extra year to assist their parents in raising younger siblings. They feed, groom, and guard the newborn kits. In 1600, beaver ponds covered eleven percent of the upper Mississippi and Missouri Rivers' watershed above Thebes, Illinois. Restoring only 3 percent of the original wetlands might suffice to prevent catastrophic floods such as those in the early 1990s."
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1989 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Restoration of Aquatic Ecosystems written by National Research Council and published by National Academies Press. This book was released on 1992-01-01 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.
Download or read book Interactive Effects of Flow Regime Climate Change and Angler Harvest on Smallmouth Bass at the Southern Range Extent written by Christopher Robert Middaugh and published by . This book was released on 2017 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ozark-Ouachita Interior Highlands of Arkansas, Oklahoma, and Missouri are the southern extent of native Smallmouth Bass Micropterus dolomieu range. Smallmouth Bass are an important species economically and ecologically, but it is unknown how climate change may affect them in this region and in particular how Smallmouth Bass may be affected differently across streams from various flow regimes. Here I present three projects investigating how climate change, flow regime, and angler harvest may interact to affect Smallmouth Bass over the coming century. I first modeled present and future water temperatures and calculated growth rate potential for Smallmouth Bass from streams within both groundwater and runoff flow regimes. Currently, water temperatures in runoff streams warm past optimal conditions for Smallmouth Bass during summer months and this is expected to be exacerbated by climate change. By the end of the century, my results predict that Smallmouth Bass growth could increase in winter, fall, and early spring in streams from both flow regimes, but will strongly decline during summer months in runoff streams. I next conducted an empirical study to examine differences in Smallmouth Bass body condition at present during summer months in both runoff and groundwater streams. I found in two out of three years of collections that Smallmouth Bass body condition declined during summer months in both groundwater and runoff streams with no significant difference between stream types. The final portion of my research examines population level effects of climate change on Smallmouth Bass from a runoff stream. I used empirical data to parameterize a simulation model where I simulated various climate scenarios such as increased flooding and drought probabilities. I found that increases in drought are likely to cause strong declines in adult Smallmouth Bass populations. Changes in harvest regulations could help protect Smallmouth Bass populations somewhat, but would likely not prevent population declines in the coming century. The effects of climate change on Smallmouth Bass at the southern range extent will likely be complex, but groundwater streams may mitigate some of the negative effects of climate change on Smallmouth Bass.
Download or read book Quantification and Prediction of Stream Dryness and Its Relationship to Smallmouth Bass Production Within the Interior Highlands written by Justin Homan and published by . This book was released on 2005 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Smallmouth bass have been extensively studied, but little is known regarding the effect of stream dryness on smallmouth bass. Relationships between discontinuity of surface flow and smallmouth bass population dynamics within the Interior Highlands of Arkansas were investigated and patterns of stream dryness were characterized. In 2003, we initiated an assessment of streambed dryness for three various-sized streams in the Ouachita Mountains- Central Hills, Ridges and Valleys. In the following summer, we applied the approach to a series total of 15, matched-sized watersheds in three ecoregions: Ouachita Mountains-Athens Plateau, Ozark Highlands-Springfield Plateau, and Lower Boston Mountains. Repeated dryness measurements were recorded for 2 km in each stream and correlated to nearby USGS stream gage records. Smallmouth bass density and biomass were estimated from a 1-km reach in six streams draining approximately 5,600 ha watersheds distributed among three ecoregions (Ozark Highlands, Boston Mountains, and Ouachita Mountains). Density and biomass were estimated three times during 2004 (May, August, and November), and production was calculated between sampling dates. Dryness reached as high as 86% for the Ouachita Mountains in 2003; whereas, flow was continuous in 2004. One stream in the Ozark Highlands dried completely in 2004 and dryness reached 84% in the Boston Mountains. Percent dry streambed was negatively correlated to discharge for the Ouachita Mountains in 2003, and the Boston Mountains in 2004 (r= -0.94 and -0.60 respectively, p
Download or read book Land use Changes and the Physical Habitat of Streams written by Robert B. Jacobson and published by Geological Survey (USGS). This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
