Shannon Brewer - Academia.edu (original) (raw)

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Papers by Shannon Brewer

Research paper thumbnail of Riverscape nesting dynamics of Neosho Smallmouth Bass: To cluster or not to cluster?

Diversity and Distributions

Research paper thumbnail of Flow Dynamics Influence Fish Recruitment in Hydrologically Connected River–Reservoir Landscapes

North American Journal of Fisheries Management

Research paper thumbnail of Survival and Movement Patterns of Rainbow Trout Stocked in a Groundwater‐Influenced Warmwater Stream

North American Journal of Fisheries Management

Research paper thumbnail of Evaluation of Visual Implant Elastomer, PIT, and p‐Chip Tagging Methods in a Small‐Bodied Minnow Species

North American Journal of Fisheries Management

Research paper thumbnail of Connectivity and flow regime direct conservation priorities for pelagophil fishes

Aquatic Conservation: Marine and Freshwater Ecosystems

Research paper thumbnail of Complex patterns of genetic and morphological differentiation in the Smallmouth Bass subspecies (Micropterus dolomieu dolomieu and M. d. velox) of the Central Interior Highlands

Research paper thumbnail of Correction to: Complex patterns of genetic and morphological differentiation in the Smallmouth Bass subspecies (Micropterus dolomieu dolomieu and M. d. velox) of the Central Interior Highlands

Research paper thumbnail of Habitat Associations of Three Crayfish Endemic to the Ouachita Mountain Ecoregion

Research paper thumbnail of Seasonal movements and tributary‐specific fidelity of blue sucker Cycleptus elongatus in a Southern Plains riverscape

Research paper thumbnail of Geomorphic identification of physical habitat features in a large, altered river system

E3S Web of Conferences

Altered flow regimes in streams can significantly affect ecosystems and disturb ecological proces... more Altered flow regimes in streams can significantly affect ecosystems and disturb ecological processes, leading to species loss and extinction. Many river management projects use stream classification and habitat assessment approaches to design practical solutions to reverse or mitigate adverse effects of flow regime alteration on stream systems. The objective of this study was to develop a methodology to provide a primary identification of physical habitats in an 80-km long segment of the Canadian River in central Oklahoma. The methodology relied on basic geomorphic variables describing the stream and its floodplain that were derived from aerial imagery and Lidar data using Geographic Information Systems. Geostatistical tests were implemented to delineate habitat units. This approach based on high resolution data and did not require in-site inspection provided a relatively refined habitat delineation, consistent with visual observations. Future efforts will focus on validation via fi...

Research paper thumbnail of Coldwater Periods in Warmwater Streams: Microhabitat Shifts from Autumn to Winter by Smallmouth Bass

North American Journal of Fisheries Management

Research paper thumbnail of Sampling the stream landscape: improving the applicability of an ecoregion-level capture probability model for stream fishes

Canadian Journal of Fisheries and Aquatic Sciences

Temporal and spatial variability in streams result in heterogeneous gear capture probability (i.e... more Temporal and spatial variability in streams result in heterogeneous gear capture probability (i.e., the proportion of available individuals identified) that confounds interpretation of data used to monitor fish abundance. We modeled tow-barge electrofishing capture probability at multiple spatial scales for nine Ozark Highland stream fishes. In addition to fish size, we identified seven reach-scale environmental characteristics associated with variable capture probability: stream discharge, water depth, conductivity, water clarity, emergent vegetation, wetted width–depth ratio, and proportion of riffle habitat. The magnitude of the relationship between capture probability and both discharge and depth varied among stream fishes. We also identified lithological characteristics among stream segments as a coarse-scale source of variable capture probability. The resulting capture probability model can be used to adjust catch data and derive reach-scale absolute abundance estimates across...

Research paper thumbnail of Thermal tolerances of fishes occupying groundwater and surface-water dominated streams

Research paper thumbnail of Synthesizing models useful for ecohydrology and ecohydraulic approaches: An emphasis on integrating models to address complex research questions

Research paper thumbnail of The accuracy of ecological flow metrics derived using a physics‐based distributed rainfall‐runoff model in the Great Plains, USA

Research paper thumbnail of Quantifying Seining Detection Probability for Fishes of Great Plains Sand-Bed Rivers

Transactions of the American Fisheries Society

Research paper thumbnail of The emblematic minnows of the North American Great Plains: A synthesis of threats and conservation opportunities

Research paper thumbnail of Relationships between landscape constraints and a crayfish assemblage with consideration of competitor presence

Diversity and Distributions

Research paper thumbnail of Subterranean Invasion by Gapped Ringed Crayfish: Effectiveness of a Removal Effort and Barrier Installation

Diversity

Non-native crayfish invasion is a major threat to many stream fauna; however, invasions in subter... more Non-native crayfish invasion is a major threat to many stream fauna; however, invasions in subterranean habitats are rarely documented. Our study objectives were to examine demographics and morphological and life-history traits of a gapped ringed crayfish Faxonius neglectus chaenodactylus population that invaded Tumbling Creek Cave and determine the effects of removal on the population. Crayfish were found throughout the cave though fewer individuals were observed upstream of an installed weir. Fecund females were collected in nearly all months, but were prevalent during spring (February–June). Males and females were of similar sizes. Males had larger chelae and chelae that were regenerated slightly more often than females. Removal of >4000 crayfish since 2011 resulted in reduced abundances, but the population persisted. Age estimates from counting bands on gastric mills indicated crayfish within the cave lived longer than populations in nearby Big Creek (6 vs. 4 years). Recent e...

Research paper thumbnail of Movement and diel habitat use of juvenile Neosho Smallmouth Bass in an Ozark stream

North American Journal of Fisheries Management

Research paper thumbnail of Riverscape nesting dynamics of Neosho Smallmouth Bass: To cluster or not to cluster?

Diversity and Distributions

Research paper thumbnail of Flow Dynamics Influence Fish Recruitment in Hydrologically Connected River–Reservoir Landscapes

North American Journal of Fisheries Management

Research paper thumbnail of Survival and Movement Patterns of Rainbow Trout Stocked in a Groundwater‐Influenced Warmwater Stream

North American Journal of Fisheries Management

Research paper thumbnail of Evaluation of Visual Implant Elastomer, PIT, and p‐Chip Tagging Methods in a Small‐Bodied Minnow Species

North American Journal of Fisheries Management

Research paper thumbnail of Connectivity and flow regime direct conservation priorities for pelagophil fishes

Aquatic Conservation: Marine and Freshwater Ecosystems

Research paper thumbnail of Complex patterns of genetic and morphological differentiation in the Smallmouth Bass subspecies (Micropterus dolomieu dolomieu and M. d. velox) of the Central Interior Highlands

Research paper thumbnail of Correction to: Complex patterns of genetic and morphological differentiation in the Smallmouth Bass subspecies (Micropterus dolomieu dolomieu and M. d. velox) of the Central Interior Highlands

Research paper thumbnail of Habitat Associations of Three Crayfish Endemic to the Ouachita Mountain Ecoregion

Research paper thumbnail of Seasonal movements and tributary‐specific fidelity of blue sucker Cycleptus elongatus in a Southern Plains riverscape

Research paper thumbnail of Geomorphic identification of physical habitat features in a large, altered river system

E3S Web of Conferences

Altered flow regimes in streams can significantly affect ecosystems and disturb ecological proces... more Altered flow regimes in streams can significantly affect ecosystems and disturb ecological processes, leading to species loss and extinction. Many river management projects use stream classification and habitat assessment approaches to design practical solutions to reverse or mitigate adverse effects of flow regime alteration on stream systems. The objective of this study was to develop a methodology to provide a primary identification of physical habitats in an 80-km long segment of the Canadian River in central Oklahoma. The methodology relied on basic geomorphic variables describing the stream and its floodplain that were derived from aerial imagery and Lidar data using Geographic Information Systems. Geostatistical tests were implemented to delineate habitat units. This approach based on high resolution data and did not require in-site inspection provided a relatively refined habitat delineation, consistent with visual observations. Future efforts will focus on validation via fi...

Research paper thumbnail of Coldwater Periods in Warmwater Streams: Microhabitat Shifts from Autumn to Winter by Smallmouth Bass

North American Journal of Fisheries Management

Research paper thumbnail of Sampling the stream landscape: improving the applicability of an ecoregion-level capture probability model for stream fishes

Canadian Journal of Fisheries and Aquatic Sciences

Temporal and spatial variability in streams result in heterogeneous gear capture probability (i.e... more Temporal and spatial variability in streams result in heterogeneous gear capture probability (i.e., the proportion of available individuals identified) that confounds interpretation of data used to monitor fish abundance. We modeled tow-barge electrofishing capture probability at multiple spatial scales for nine Ozark Highland stream fishes. In addition to fish size, we identified seven reach-scale environmental characteristics associated with variable capture probability: stream discharge, water depth, conductivity, water clarity, emergent vegetation, wetted width–depth ratio, and proportion of riffle habitat. The magnitude of the relationship between capture probability and both discharge and depth varied among stream fishes. We also identified lithological characteristics among stream segments as a coarse-scale source of variable capture probability. The resulting capture probability model can be used to adjust catch data and derive reach-scale absolute abundance estimates across...

Research paper thumbnail of Thermal tolerances of fishes occupying groundwater and surface-water dominated streams

Research paper thumbnail of Synthesizing models useful for ecohydrology and ecohydraulic approaches: An emphasis on integrating models to address complex research questions

Research paper thumbnail of The accuracy of ecological flow metrics derived using a physics‐based distributed rainfall‐runoff model in the Great Plains, USA

Research paper thumbnail of Quantifying Seining Detection Probability for Fishes of Great Plains Sand-Bed Rivers

Transactions of the American Fisheries Society

Research paper thumbnail of The emblematic minnows of the North American Great Plains: A synthesis of threats and conservation opportunities

Research paper thumbnail of Relationships between landscape constraints and a crayfish assemblage with consideration of competitor presence

Diversity and Distributions

Research paper thumbnail of Subterranean Invasion by Gapped Ringed Crayfish: Effectiveness of a Removal Effort and Barrier Installation

Diversity

Non-native crayfish invasion is a major threat to many stream fauna; however, invasions in subter... more Non-native crayfish invasion is a major threat to many stream fauna; however, invasions in subterranean habitats are rarely documented. Our study objectives were to examine demographics and morphological and life-history traits of a gapped ringed crayfish Faxonius neglectus chaenodactylus population that invaded Tumbling Creek Cave and determine the effects of removal on the population. Crayfish were found throughout the cave though fewer individuals were observed upstream of an installed weir. Fecund females were collected in nearly all months, but were prevalent during spring (February–June). Males and females were of similar sizes. Males had larger chelae and chelae that were regenerated slightly more often than females. Removal of >4000 crayfish since 2011 resulted in reduced abundances, but the population persisted. Age estimates from counting bands on gastric mills indicated crayfish within the cave lived longer than populations in nearby Big Creek (6 vs. 4 years). Recent e...

Research paper thumbnail of Movement and diel habitat use of juvenile Neosho Smallmouth Bass in an Ozark stream

North American Journal of Fisheries Management

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