Paul Angermeier, PhD (Former Employee)
Science and Products
Filter Total Items: 86
Projecting cumulative benefits of multiple river restoration projects: an example from the Sacramento-San Joaquin River system in California Projecting cumulative benefits of multiple river restoration projects: an example from the Sacramento-San Joaquin River system in California
Despite increasingly large investments, the potential ecological effects of river restoration programs are still small compared to the degree of human alterations to physical and ecological function. Thus, it is rarely possible to “restore” pre-disturbance conditions; rather restoration programs (even large, well-funded ones) will nearly always involve multiple small projects, each of...
Authors
G. Mathias Kondolf, Paul L. Angermeier, Kenneth Cummins, Thomas Dunne, Michael Healey, Wim Kimmerer, Peter B. Moyle, Dennis Murphy, Duncan Patten, Steve F. Railsback, Denise J. Reed, Robert B. Spies, Robert Twiss
Evidence for fish dispersal from spatial analysis of stream network topology Evidence for fish dispersal from spatial analysis of stream network topology
Developing spatially explicit conservation strategies for stream fishes requires an understanding of the spatial structure of dispersal within stream networks. We explored spatial patterns of stream fish dispersal by evaluating how the size and proximity of connected streams (i.e., stream network topology) explained variation in fish assemblage structure and how this relationship varied...
Authors
N.P. Hitt, P. L. Angermeier
Integrating human impacts and ecological integrity into a risk-based protocol for conservation planning Integrating human impacts and ecological integrity into a risk-based protocol for conservation planning
Conservation planning aims to protect biodiversity by sustainng the natural physical, chemical, and biological processes within representative ecosystems. Often data to measure these components are inadequate or unavailable. The impact of human activities on ecosystem processes complicates integrity assessments and might alter ecosystem organization at multiple spatial scales. Freshwater
Authors
K.M. Mattson, Paul L. Angermeier
Spatiotemporal variability of stream habitat and movement of three species of fish Spatiotemporal variability of stream habitat and movement of three species of fish
Relationships between environmental variability and movement are poorly understood, due to both their complexity and the limited ecological scope of most movement studies. We studied movements of fantail (Etheostoma flabellare), riverweed (E. podostemone), and Roanoke darters (Percina roanoka) through two stream systems during two summers. We then related movement to variability in...
Authors
J.H. Roberts, P. L. Angermeier
Defining and implementing best available science for fisheries and environmental science, policy, and management Defining and implementing best available science for fisheries and environmental science, policy, and management
[No abstract available]
Authors
P.J. Sullivan, J.M. Acheson, P. L. Angermeier, T. Faast, J. Flemma, C.M. Jones, E.E. Knudsen, T.J. Minello, D.H. Secor, R. Wunderlich, B.A. Zanetell
Impacts of new highways and subsequent landscape urbanization on stream habitat and biota Impacts of new highways and subsequent landscape urbanization on stream habitat and biota
New highways are pervasive, pernicious threats to stream ecosystems because of their short- and long-term physical, chemical, and biological impacts. Unfortunately, standard environmental impact statements (EISs) and environmental assessments (EAs) focus narrowly on the initial direct impacts of construction and ignore other long-term indirect impacts. More thorough consideration of...
Authors
A.P. Wheeler, P. L. Angermeier, A.E. Rosenberger
How much is enough? The recurrent problem of setting measurable objectives in conservation How much is enough? The recurrent problem of setting measurable objectives in conservation
International agreements, environmental laws, resource management agencies, and environmental nongovernmental organizations all establish objectives that define what they hope to accomplish. Unfortunately, quantitative objectives in conservation are typically set without consistency and scientific rigor. As a result, conservationists are failing to provide credible answers to the...
Authors
Timothy Tear, Peter Kareiva, Paul L. Angermeier, P. Comer, Brian Czech, R. Kautz, L. Landon, D. Mehlman, K. Murphy, M. Ruckelshaus, J. Michael Scott, G. Wilhere
A comparison of injectable fluorescent marks in two genera of darters: Effects on survival and retention rates A comparison of injectable fluorescent marks in two genera of darters: Effects on survival and retention rates
Visible implant elastomer (VIE) and injectable photonic dye (IPD), two types of injectable fluorescent marks, have shown promise in previous applications in a variety of fishes but have not been extensively tested on darters. We marked a species from each of two genera of darters, Percina and Etheostoma, in a laboratory experiment to determine the influence of VIE and IPD marks on...
Authors
J.H. Roberts, P. L. Angermeier
Ecological correlates of fish movement in a network of Virginia streams Ecological correlates of fish movement in a network of Virginia streams
Identifying factors that influence fish movement is a key step in predicting how populations respond to environmental change. Using mark-recapture (four species) and trap capture (eight species) data, we examined relationships between three attributes of movement and 15 ecological variables. The probability of emigrating from a reach was positively related to intermittency (one species)...
Authors
B. Albanese, P. L. Angermeier, S. Dorai-Raj
Using fish communities to assess streams in Romania: Initial development of an index of biotic integrity Using fish communities to assess streams in Romania: Initial development of an index of biotic integrity
Multimetric biotic indices increasingly are used to complement physicochemical data in assessments of stream quality. We initiated development of multimetric indices, based on fish communities, to assess biotic integrity of streams in two physiographic regions of central Romania. Unlike previous efforts to develop such indices for European streams, our metrics and scoring criteria were...
Authors
P. L. Angermeier, G. Davideanu
Geographic variation in patterns of nestedness among local stream fish assemblages in Virginia Geographic variation in patterns of nestedness among local stream fish assemblages in Virginia
Nestedness of faunal assemblages is a multiscale phenomenon, potentially influenced by a variety of factors. Prior small-scale studies have found freshwater fish species assemblages to be nested along stream courses as a result of either selective colonization or extinction. However, within-stream gradients in temperature and other factors are correlated with the distributions of many...
Authors
R.R. Cook, P. L. Angermeier, D.S. Finn, N.L. Poff, K.L. Krueger
Designing mark-recapture studies to reduce effects of distance weighting on movement distance distributions of stream fishes Designing mark-recapture studies to reduce effects of distance weighting on movement distance distributions of stream fishes
Mark-recapture studies generate biased, or distance-weighted, movement data because short distances are sampled more frequently than long distances. Using models and field data, we determined how study design affects distance weighting and the movement distributions of stream fishes. We first modeled distance weighting as a function of recapture section length in an unbranching stream...
Authors
B. Albanese, P. L. Angermeier, C. Gowan
Science and Products
Filter Total Items: 86
Projecting cumulative benefits of multiple river restoration projects: an example from the Sacramento-San Joaquin River system in California Projecting cumulative benefits of multiple river restoration projects: an example from the Sacramento-San Joaquin River system in California
Despite increasingly large investments, the potential ecological effects of river restoration programs are still small compared to the degree of human alterations to physical and ecological function. Thus, it is rarely possible to “restore” pre-disturbance conditions; rather restoration programs (even large, well-funded ones) will nearly always involve multiple small projects, each of...
Authors
G. Mathias Kondolf, Paul L. Angermeier, Kenneth Cummins, Thomas Dunne, Michael Healey, Wim Kimmerer, Peter B. Moyle, Dennis Murphy, Duncan Patten, Steve F. Railsback, Denise J. Reed, Robert B. Spies, Robert Twiss
Evidence for fish dispersal from spatial analysis of stream network topology Evidence for fish dispersal from spatial analysis of stream network topology
Developing spatially explicit conservation strategies for stream fishes requires an understanding of the spatial structure of dispersal within stream networks. We explored spatial patterns of stream fish dispersal by evaluating how the size and proximity of connected streams (i.e., stream network topology) explained variation in fish assemblage structure and how this relationship varied...
Authors
N.P. Hitt, P. L. Angermeier
Integrating human impacts and ecological integrity into a risk-based protocol for conservation planning Integrating human impacts and ecological integrity into a risk-based protocol for conservation planning
Conservation planning aims to protect biodiversity by sustainng the natural physical, chemical, and biological processes within representative ecosystems. Often data to measure these components are inadequate or unavailable. The impact of human activities on ecosystem processes complicates integrity assessments and might alter ecosystem organization at multiple spatial scales. Freshwater
Authors
K.M. Mattson, Paul L. Angermeier
Spatiotemporal variability of stream habitat and movement of three species of fish Spatiotemporal variability of stream habitat and movement of three species of fish
Relationships between environmental variability and movement are poorly understood, due to both their complexity and the limited ecological scope of most movement studies. We studied movements of fantail (Etheostoma flabellare), riverweed (E. podostemone), and Roanoke darters (Percina roanoka) through two stream systems during two summers. We then related movement to variability in...
Authors
J.H. Roberts, P. L. Angermeier
Defining and implementing best available science for fisheries and environmental science, policy, and management Defining and implementing best available science for fisheries and environmental science, policy, and management
[No abstract available]
Authors
P.J. Sullivan, J.M. Acheson, P. L. Angermeier, T. Faast, J. Flemma, C.M. Jones, E.E. Knudsen, T.J. Minello, D.H. Secor, R. Wunderlich, B.A. Zanetell
Impacts of new highways and subsequent landscape urbanization on stream habitat and biota Impacts of new highways and subsequent landscape urbanization on stream habitat and biota
New highways are pervasive, pernicious threats to stream ecosystems because of their short- and long-term physical, chemical, and biological impacts. Unfortunately, standard environmental impact statements (EISs) and environmental assessments (EAs) focus narrowly on the initial direct impacts of construction and ignore other long-term indirect impacts. More thorough consideration of...
Authors
A.P. Wheeler, P. L. Angermeier, A.E. Rosenberger
How much is enough? The recurrent problem of setting measurable objectives in conservation How much is enough? The recurrent problem of setting measurable objectives in conservation
International agreements, environmental laws, resource management agencies, and environmental nongovernmental organizations all establish objectives that define what they hope to accomplish. Unfortunately, quantitative objectives in conservation are typically set without consistency and scientific rigor. As a result, conservationists are failing to provide credible answers to the...
Authors
Timothy Tear, Peter Kareiva, Paul L. Angermeier, P. Comer, Brian Czech, R. Kautz, L. Landon, D. Mehlman, K. Murphy, M. Ruckelshaus, J. Michael Scott, G. Wilhere
A comparison of injectable fluorescent marks in two genera of darters: Effects on survival and retention rates A comparison of injectable fluorescent marks in two genera of darters: Effects on survival and retention rates
Visible implant elastomer (VIE) and injectable photonic dye (IPD), two types of injectable fluorescent marks, have shown promise in previous applications in a variety of fishes but have not been extensively tested on darters. We marked a species from each of two genera of darters, Percina and Etheostoma, in a laboratory experiment to determine the influence of VIE and IPD marks on...
Authors
J.H. Roberts, P. L. Angermeier
Ecological correlates of fish movement in a network of Virginia streams Ecological correlates of fish movement in a network of Virginia streams
Identifying factors that influence fish movement is a key step in predicting how populations respond to environmental change. Using mark-recapture (four species) and trap capture (eight species) data, we examined relationships between three attributes of movement and 15 ecological variables. The probability of emigrating from a reach was positively related to intermittency (one species)...
Authors
B. Albanese, P. L. Angermeier, S. Dorai-Raj
Using fish communities to assess streams in Romania: Initial development of an index of biotic integrity Using fish communities to assess streams in Romania: Initial development of an index of biotic integrity
Multimetric biotic indices increasingly are used to complement physicochemical data in assessments of stream quality. We initiated development of multimetric indices, based on fish communities, to assess biotic integrity of streams in two physiographic regions of central Romania. Unlike previous efforts to develop such indices for European streams, our metrics and scoring criteria were...
Authors
P. L. Angermeier, G. Davideanu
Geographic variation in patterns of nestedness among local stream fish assemblages in Virginia Geographic variation in patterns of nestedness among local stream fish assemblages in Virginia
Nestedness of faunal assemblages is a multiscale phenomenon, potentially influenced by a variety of factors. Prior small-scale studies have found freshwater fish species assemblages to be nested along stream courses as a result of either selective colonization or extinction. However, within-stream gradients in temperature and other factors are correlated with the distributions of many...
Authors
R.R. Cook, P. L. Angermeier, D.S. Finn, N.L. Poff, K.L. Krueger
Designing mark-recapture studies to reduce effects of distance weighting on movement distance distributions of stream fishes Designing mark-recapture studies to reduce effects of distance weighting on movement distance distributions of stream fishes
Mark-recapture studies generate biased, or distance-weighted, movement data because short distances are sampled more frequently than long distances. Using models and field data, we determined how study design affects distance weighting and the movement distributions of stream fishes. We first modeled distance weighting as a function of recapture section length in an unbranching stream...
Authors
B. Albanese, P. L. Angermeier, C. Gowan