Spatial Structure And Temporal Variation Of Fish Communities In The Upper Mississippi River System
DOWNLOAD
Download Spatial Structure And Temporal Variation Of Fish Communities In The Upper Mississippi River System PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Spatial Structure And Temporal Variation Of Fish Communities In The Upper Mississippi River System book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Spatial Structure And Temporal Variation Of Fish Communities In The Upper Mississippi River System
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2005
Spatial Structure And Temporal Variation Of Fish Communities In The Upper Mississippi River System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Fish communities categories.
Variation in community composition (presence/absence data) and structure (relative abundance) of Upper Mississippi River fishes was assessed using data from the Long Term Resource Monitoring Program collected from 1994 to 2002. Community composition of fishes varied more in space than through time. We found substantial variation in community composition across two spatial scales: large-scale differences between upper and lower river reaches and small-scale differences among individual regional trend areas (RTA). Community structure (relative abundance data) of fishes also varied more through space than through time. We found substantial variation in fish community structure at three spatial scales: (1) large-scale differences between upper and lower river reaches, (2) differences among individual RTA, and (3) differences among habitat strata, with backwaters having a distinct community structure relative to the main channel and side channels. When averaged across all RTA, fish community structure in 1994 and 1995 was distinct from all other years, possibly as a result of the 1993 Flood. Fish community structure observations for each RTA and year correlated with the environmental variables measured at each sample site. A canonical approach revealed that the combination of Secchi depth, water temperature, current velocity, and vegetation abundance had the greatest correlation with community structure.
Spatial Temporal And Environmental Trends Of Fish Assemblages Within Six Reaches Of The Upper Mississippi River System
DOWNLOAD
Author : Valerie A. Barko
language : en
Publisher:
Release Date : 2005
Spatial Temporal And Environmental Trends Of Fish Assemblages Within Six Reaches Of The Upper Mississippi River System written by Valerie A. Barko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Fish communities categories.
We investigated differences in adult and young-of-the-year (YOY) fishes within each of the six Long Term Resource Monitoring Program study areas, using monitoring data from 1993 to 2001. Our objective was to investigate the relative roles of seasonal, annual, in situ, and physical habitat factors in explaining assemblage structure patterns within the Long Term Resource Monitoring Program study areas. Adult and YOY assemblage structure within each reach was dominated by one to three numerically abundant species. The percent of the total abundance for which these species accounted was 10-88% and varied among age classes and study areas. Physical habitat classes were only weakly associated with differences in fish assemblage patterns within each study area. The amount of variation in fish abundance explained by physical habitats varied among the reaches. Differences among physical habitat classes accounted for 3-23% of the variation in the adult fish assemblage and for 3-20% of the difference in the YOY fish assemblage within each reach of our study area. Factors associated with interannual differences in environmental conditions were strongly correlated to patterns in assemblage structure within each of the six study areas. This was particularly true for YOY assemblages. Such a result would not have been attainable without long-term standardized data. Little is known regarding YOY assemblage patterns and dynamics in large river systems and long-term data sets are vital for continued investigation. The influence of environmental gradients on fish assemblage structure varied among the six study areas and explained 9-31% of the variation in assemblage structure. In the northern four reaches, water velocity was one of the primary factors associated with differences in fish assemblage structure. In the Unimpounded Reach (Upper Mississippi River) and Illinois River study areas, river elevation was one of the primary factors associated with differences in assemblage structure. Depth of gear deployment was influential in explaining differences in assemblage structure patterns in all reaches except the Upper Mississippi River Pool 4 and the Illinois River study areas. In all study areas, the amount of variation in fish abundance patterns explained by sampling period was relatively low. However, assemblage structure differed among sampling periods. In the northern reaches, sampling periods 2 and 3 were the most similar.
Spatial And Temporal Variability Of Channel Catfish Populations In The Upper Mississippi River System
DOWNLOAD
Author : Todd Marvin Koel
language : en
Publisher:
Release Date : 1998
Spatial And Temporal Variability Of Channel Catfish Populations In The Upper Mississippi River System written by Todd Marvin Koel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Channel catfish categories.
One application of Long Term Resource Monitoring Program (LTRMP) data is to evaluate long term trends in channel catfish (Ictalurus punctatus Rafinesque 1818) populations. This species is an important component of the Upper Mississippi River System (UMRS) fish community because it is numerally abundant, it comprises a significant portion of the total fish biomass, and it is avidly sought by both sport anglers and commercial harvesters. Since 1989, biologists at the LTRMP Field Stations have monitored fish population and community structure at six pools and in multiple aquatic habitat types of the UMRS. These pools include the tailwater, impounded, side channel, main channel, and backwater habitats defined by navigation lock and dam 4, 8, 13, and 26 of the Mississippi River; the.
Temporal And Spatial Trends In The Frequency Of Occurrence Length Frequency Distributions Length Weight Relationships And Relative Abundance Of Upper Mississippi River Fish
DOWNLOAD
Author : Daniel J. Kirby
language : en
Publisher:
Release Date : 2006
Temporal And Spatial Trends In The Frequency Of Occurrence Length Frequency Distributions Length Weight Relationships And Relative Abundance Of Upper Mississippi River Fish written by Daniel J. Kirby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Freshwater fishes categories.
Spatial Patterns Of Resource Use Of A Native Fish Assemblage In The Upper Mississippi River System
DOWNLOAD
Author : Shaley A. Valentine
language : en
Publisher:
Release Date : 2023
Spatial Patterns Of Resource Use Of A Native Fish Assemblage In The Upper Mississippi River System written by Shaley A. Valentine and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with Mississippi River categories.
In rivers that shift in their natural or modified physical structure, it is expected that organisms alter their resource use with the shifts in physical changes. The Upper Mississippi River System (UMRS) is a modified river basin and stark contrasts in both the physical structure of habitat types and biological structure in the types of organisms present exist spatially. The upper reaches of the basin contain more complex habitat types than the lower reaches which suggests resource use of fishes likely differs at least between upper and lower reaches. To date, the resource use of some commercially important, invasive, and imperiled species has been studied. However, little information regarding resource use exists for most native fishes. Understanding resource use and how it differs across time and space would benefit managers of the UMRS as programs are underway to restore and manage the system. To determine how resource use of native fishes differs spatially and temporally in the UMRS, I quantified resource use of ten native fishes across six reaches of the UMRS using multiple techniques. At the largest spatial and temporal scale, I quantified the natal origins of six prey and two predatory fishes using trace element analysis. At a seasonal scale, I quantified the collective resource use of eight species using carbon and nitrogen isotopes to compare isotopic niche space, niche overlap, and community metrics. At the shortest scale, I quantified the diets of two predatory species that are thought to compete with one another. Both large scale similarities and nuances in resource use existed in the UMRS depending on the spatial and temporal contexts. At the longest scale, fishes consistently used network connectivity as tributaries and other mainstem river reaches contributed recruits to the mainstem river. However, the percentage of individuals resulting from network connectivity and the specific rivers that lent the recruits differed among species and reaches. Particularly, large tributaries like the Minnesota and Missouri rivers contributed relatively high numbers of recruits to nearby reaches compared to other tributaries, and the most downstream reaches had the greatest contributions from network connectivity. Prey fishes recruited more often from tributaries than predators whereas consumed prey and prey collected directly from the UMRS had similar origins which were consistent across years. At a seasonal scale, breadth of resource use of individual species and the assemblage and some community metrics increased whereas overlap decreased moving downstream in the UMRS. This shift in resource use metrics coincides with shifts in the physical structure of the system. At the shortest scale, diet compositions of the two predators were similar to one another and spatially among upper reaches in the UMRS. These two predators likely coexist in part due to diet plasticity and prey size allocations that differ between species. Additionally, the relative physical homogeneity of the upper reaches of the UMRS may have led to the spatial similarity in prey use. Together, these results suggest the physical structure of the system impacted the resource use of fishes, where trophic niches and use of network connectivity shifted with the shift in physical structure of the Mississippi River. At a minimum, spatial gradients in isotopic niches and percentage of individuals coming from network connectivity suggest the resource use of fishes in downstream reaches at seasonal and life-long scales differs from the upstream reaches within this system. These differences could stem from longitudinal or functional process zone shifts in the physical structure which cannot be determined given these data. In the context of management of the system, fishes use network connectivity to at least some degree across all species and sampling reaches, indicating that the connectivity in the system should at least be maintained if not improved. Additionally, fish move among reaches (i.e., through lock and dams) and tributaries, which highlights the need for interjurisdictional management not just in the UMRS but in nearby tributary systems like the Minnesota and Missouri River where fish originated.
Spatial And Temporal Variation Of Fish Communities In Secondary Channels Of The San Juan River New Mexico And Utah
DOWNLOAD
Author : Keith B. Gido
language : en
Publisher:
Release Date : 1995
Spatial And Temporal Variation Of Fish Communities In Secondary Channels Of The San Juan River New Mexico And Utah written by Keith B. Gido and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Fishes categories.
Resilience And Riverine Landscapes
DOWNLOAD
Author : Martin Thoms
language : en
Publisher: Elsevier
Release Date : 2023-11-28
Resilience And Riverine Landscapes written by Martin Thoms and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-11-28 with Technology & Engineering categories.
Resilience and Riverine Landscapes presents contributed chapters from global experts in Riverine Landscapes, making it the most comprehensive reference available on the topic. The book explores why rivers are ideal landscapes to study resilience and why studying rivers from a resilience perspective is important for our biophysical understanding of these landscapes and for society. The book focuses on the biophysical character of resilience in riverine landscapes, providing an interdisciplinary perspective of the structure, function, and interactions of riverine landscapes and the ecosystems they contain. The editors conclude by proposing a research agenda for the future, emphasizing the need for transdisciplinary research across a range of spatial and temporal scales and research domains. Presents the resilience of rivers with both a theoretical and applied focus Includes case studies from a wide geographical base, allowing for a full range of viewpoints Showcases how resilience is being incorporated into the study and management of riverine landscapes Includes a transdisciplinary focus on riverine landscapes, from theory to applied, and from biophysical to social-ecological systems
Methods In Stream Ecology
DOWNLOAD
Author : F. Richard Hauer
language : en
Publisher: Academic Press
Release Date : 2017-01-16
Methods In Stream Ecology written by F. Richard Hauer and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-16 with Science categories.
Methods in Stream Ecology provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This two part new edition is updated to reflect recent advances in the technology associated with ecological assessment of streams, including remote sensing. Volume focusses on ecosystem structure with in-depth sections on Physical Processes, Material Storage and Transport and Stream Biota. With a student-friendly price, this Third Edition is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. Provides a variety of exercises in each chapter Includes detailed instructions, illustrations, formulae, and data sheets for in-field research for students Presents taxonomic keys to common stream invertebrates and algae Includes website with tables and a link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers Written by leading experts in stream ecology
Relation Of Fish Community Composition To Environmental Factors And Land Use In Part Of The Upper Mississippi River Basin 1995 97
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1999
Relation Of Fish Community Composition To Environmental Factors And Land Use In Part Of The Upper Mississippi River Basin 1995 97 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Ecology categories.
The Long Term Illinois River Fish Population Monitoring Program F 101 R 17
DOWNLOAD
Author : Michael A. McClelland
language : en
Publisher:
Release Date : 2006
The Long Term Illinois River Fish Population Monitoring Program F 101 R 17 written by Michael A. McClelland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Fish populations categories.