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Author: Jessica Orlofske Publisher: ISBN: Category : Benthic ecology Languages : en Pages : 0
Book Description
Benthic macroinvertebrate taxonomic data is the foundation of freshwater biomonitoring programs.around the world. Biological trait information has been proposed as an effective alternative or supplement to taxonomic data for ·biomonitoring purposes. Traits are simply measurable, heritable properties of an organism that interact with the environment. Trait data can expand the geographical scope of assessments as well as describe mechanistic relationships between environmental conditions and the biological community to diagnose impact severity and type of stressor. In riverine ecosystems, a change in the flow regime or hydrological alteration is considered the most significant environmental stressor because of the detrimental effects on biological communities and habitats as well as interactions with other stressors. To maintain ecological integrity, trait data can inform the benthic macroinvertebrate assemblage response to flow properties to support environmental flow management criteria. My objective was to define and evaluate traits and trait metrics that could be linked to hydrological conditions. Specifically, I investigated intra- and inter-tax on trait properties for body size and body shape, which are predicted to respond strongly to hydraulic and hydrologic scale variables. Multiple field sites were sampled several times over a five-year period in the unregulated Miramichi River Basin, New Brunswick, Canada to resolve the relationships between flow and ecology. I was able to demonstrate the importance of intraspecific trait variation and trait properties for characterizing the benthic assemblage. By measuring specimen body sizes and establishing body shape criteria using geometric morphometric analysis, I improved the accuracy of traits-based metrics and demonstrated a sizedependent bias in current taxonomic-based metrics. Using both traditional categorical trait states as well as high-resolution trait data, I was able to characterize relationships among aquatic insects and hydrological properties at nested spatial scales. Then I tested the performance of taxonomic and trait metrics to assess hydrological data over short (two-year) to moderate (five-year) temporal scales. High-resolution trait metrics demonstrated equal or greater association with hydrological factors than taxonomic or other trait metrics at these timescales. Trait information can add value to biomonitoring approaches by accurately describing trait expression, enabling stronger statistical inference, and increasing sensitivity and interpretability, which are essential for evaluating the complex relationship between benthic assemblages and their hydrological environment.
Author: Jessica Orlofske Publisher: ISBN: Category : Benthic ecology Languages : en Pages : 0
Book Description
Benthic macroinvertebrate taxonomic data is the foundation of freshwater biomonitoring programs.around the world. Biological trait information has been proposed as an effective alternative or supplement to taxonomic data for ·biomonitoring purposes. Traits are simply measurable, heritable properties of an organism that interact with the environment. Trait data can expand the geographical scope of assessments as well as describe mechanistic relationships between environmental conditions and the biological community to diagnose impact severity and type of stressor. In riverine ecosystems, a change in the flow regime or hydrological alteration is considered the most significant environmental stressor because of the detrimental effects on biological communities and habitats as well as interactions with other stressors. To maintain ecological integrity, trait data can inform the benthic macroinvertebrate assemblage response to flow properties to support environmental flow management criteria. My objective was to define and evaluate traits and trait metrics that could be linked to hydrological conditions. Specifically, I investigated intra- and inter-tax on trait properties for body size and body shape, which are predicted to respond strongly to hydraulic and hydrologic scale variables. Multiple field sites were sampled several times over a five-year period in the unregulated Miramichi River Basin, New Brunswick, Canada to resolve the relationships between flow and ecology. I was able to demonstrate the importance of intraspecific trait variation and trait properties for characterizing the benthic assemblage. By measuring specimen body sizes and establishing body shape criteria using geometric morphometric analysis, I improved the accuracy of traits-based metrics and demonstrated a sizedependent bias in current taxonomic-based metrics. Using both traditional categorical trait states as well as high-resolution trait data, I was able to characterize relationships among aquatic insects and hydrological properties at nested spatial scales. Then I tested the performance of taxonomic and trait metrics to assess hydrological data over short (two-year) to moderate (five-year) temporal scales. High-resolution trait metrics demonstrated equal or greater association with hydrological factors than taxonomic or other trait metrics at these timescales. Trait information can add value to biomonitoring approaches by accurately describing trait expression, enabling stronger statistical inference, and increasing sensitivity and interpretability, which are essential for evaluating the complex relationship between benthic assemblages and their hydrological environment.
Author: Kleber Del-Claro Publisher: Springer ISBN: 303016327X Category : Science Languages : en Pages : 440
Book Description
This book presents a broad view of the ecology and behavior of aquatic insects, raising awareness of this conspicuous and yet little known fauna that inhabits inland waterbodies such as rivers, lakes and streams, and is particularly abundant and diverse in tropical ecosystems. The chapters address topics such as distribution, dispersal, territoriality, mating behavior, parental care and the role of sensory systems in the response to external and internal cues. In the context of ecology, it discusses aquatic insects as bio indicators that may be used to assess environmental disturbances, either in protected or urban areas, and provides insights into how genetic connectivity can support the development of novel conservation strategies. It also explores how aquatic insects can inspire solutions for various problems faced by modern society, presenting examples in the fields of material science, optics, sensorics and robotics.
Author: Francesco de Bello Publisher: Cambridge University Press ISBN: 1108472915 Category : Nature Languages : en Pages : 311
Book Description
Trait-based ecology is rapidly expanding. This comprehensive and accessible guide covers the main concepts and tools in functional ecology.
Author: Bolortsetseg Erdenee Publisher: ISBN: Category : Aquatic insects Languages : en Pages : 0
Book Description
The focus of this research is the flow-ecology relationship and climate vulnerability of two terminal basins on two continents: the Great Basin in the United States (US-TB) and the Central Asian Internal Drainage in Mongolia (MN-TB). These northern hemisphere basins are located within two of the largest temperate steppe biomes in the world and correspond to semiarid desert steppes. Comparison of these terminal basins can help us understand both similarities and differences within similar ecoregions that are widely separated geographically. A comparison of streamflow characteristics was conducted using streamflow variabilities at Functional Process Zones (FPZs), which are the study units of macroscale comparison with different valley-scale hydrogeomorphic characteristics. The streamflow variabilities calculated from continuous daily streamflow data spanning 1990-2014; indicated that streamflow was characterized by longer seasonal high flow in MN-TB and larger minimum flow in US-TB, and four distinct streamflow patterns were established: extended high flow and frequent flooding in MN-TB and highly variable and large baseflow in US-TB. Hence, the larger minimum flow defined high taxa richness in US-TB and the longer seasonal high flow was responsible for the high heterogeneity of aquatic insect assemblages in MN-TB, whereas the four streamflow patterns selected taxa with relatively different functional traits. Among taxa with climate-sensitive traits at FPZs with the four streamflow patterns, warm-water taxa were predicted to be more vulnerable when they also have a preference for slow-moving water conditions. Among the four streamflow patterns, FPZs with the highly variable flow were the most sensitive to projected climate change. Despite similar limiting physiographic conditions such as lacking outlets and connectivity to outside watersheds, these two terminal basins have different flow regimes, which further define the patterns of aquatic insects and vulnerability to climate change. The differences in flow regimes and aquatic insect assemblages indicate that these two terminal basins were driven by differences in continental climate rather than their ecoregional affiliations. Even though the sample sites were located in the same type of ecoregions, continental level variables drove differential responses in the flow-ecology and predicted responses to climate change. Therefore, when examining similar systems, global and continental-scale effects should be taken into effect for designing large-scale natural resource management of rivers.
Author: Ralph O. Brinkhurst Publisher: Fisheries and Oceans, Scientific Information and Publications Branch ISBN: 9780660119243 Category : Annelida Languages : en Pages : 259
Author: John A. Wiens Publisher: John Wiley & Sons ISBN: 1444337939 Category : Science Languages : en Pages : 360
Book Description
In North America, concepts of Historical Range of Variability are being employed in land-management planning for properties of private organizations and multiple government agencies. The National Park Service, U.S. Fish & Wildlife Service, Bureau of Land Management, U.S. Forest Service, and The Nature Conservancy all include elements of historical ecology in their planning processes. Similar approaches are part of land management and conservation in Europe and Australia. Each of these user groups must struggle with the added complication of rapid climate change, rapid land-use change, and technical issues in order to employ historical ecology effectively. Historical Environmental Variation in Conservation and Natural Resource Management explores the utility of historical ecology in a management and conservation context and the development of concepts related to understanding future ranges of variability. It provides guidance and insights to all those entrusted with managing and conserving natural resources: land-use planners, ecologists, fire scientists, natural resource policy makers, conservation biologists, refuge and preserve managers, and field practitioners. The book will be particularly timely as science-based management is once again emphasized in United States federal land management and as an understanding of the potential effects of climate change becomes more widespread among resource managers. Additional resources for this book can be found at: www.wiley.com/go/wiens/historicalenvironmentalvariation.
Author: Kleber Del-Claro Publisher: ISBN: 9783030163280 Category : Animal ecology Languages : en Pages : 440
Book Description
This book presents a broad view of the ecology and behavior of aquatic insects, raising awareness of this conspicuous and yet little known fauna that inhabits inland waterbodies such as rivers, lakes and streams, and is particularly abundant and diverse in tropical ecosystems. The chapters address topics such as distribution, dispersal, territoriality, mating behavior, parental care and the role of sensory systems in the response to external and internal cues. In the context of ecology, it discusses aquatic insects as bio indicators that may be used to assess environmental disturbances, either in protected or urban areas, and provides insights into how genetic connectivity can support the development of novel conservation strategies. It also explores how aquatic insects can inspire solutions for various problems faced by modern society, presenting examples in the fields of material science, optics, sensorics and robotics.
Author: Keith Walker Publisher: CSIRO PUBLISHING ISBN: 0643108300 Category : Science Languages : en Pages : 503
Book Description
This edited volume reviews our past and present understanding of the ecology of Australian freshwater fishes. It compares patterns and processes in Australia with those on other continents, discusses the local relevance of ecological models from the northern hemisphere and considers how best to manage our species and their habitats in the face of current and future threats. In view of these challenges, the need for redress is urgent. The chapters are written by some of our foremost researchers and managers, developing themes that underpin our knowledge of the ecology, conservation and management of fish and fish habitats. For each theme, the authors formulate a synthesis of what is known, consider the need for new perspectives and identify gaps and opportunities for research, monitoring and management. The themes have an Australian context but draw upon ideas and principles developed by fish biologists in other parts of the world. The science of freshwater fish ecology in Australia has grown rapidly from its roots in natural history and taxonomy. This book offers an introduction for students, researchers and managers, one that the authors hope will carry Australian fish biology and resource management to new levels of understanding.
Author: Thibault Datry Publisher: Academic Press ISBN: 0128039043 Category : Science Languages : en Pages : 624
Book Description
Intermittent Rivers and Ephemeral Streams: Ecology and Management takes an internationally broad approach, seeking to compare and contrast findings across multiple continents, climates, flow regimes, and land uses to provide a complete and integrated perspective on the ecology of these ecosystems. Coupled with this, users will find a discussion of management approaches applicable in different regions that are illustrated with relevant case studies. In a readable and technically accurate style, the book utilizes logically framed chapters authored by experts in the field, allowing managers and policymakers to readily grasp ecological concepts and their application to specific situations. - Provides up-to-date reviews of research findings and management strategies using international examples - Explores themes and parallels across diverse sub-disciplines in ecology and water resource management utilizing a multidisciplinary and integrative approach - Reveals the relevance of this scientific understanding to managers and policymakers
Author: Jessica Orlofske
Author: Jessica Orlofske
Author: Kleber Del-Claro
Author: Francesco de Bello
Author: Bolortsetseg Erdenee
Author: Ralph O. Brinkhurst
Author: John A. Wiens
Author: Vincent H. Resh
Author: Kleber Del-Claro
Author: Keith Walker
Author: Thibault Datry