2018
DOI: 10.1002/aqc.2996
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Restricted movement of prairie fishes in fragmented riverscapes risks ecosystem structure being ratcheted downstream

Abstract: 1. Prairie streams are dynamic systems in which habitat patches are sporadically created and lost during extreme hydrological events. The persistence of fish species depends on life-history traits that facilitate their widespread dispersal to recolonize habitats after stochastic extirpation. Artificial barriers are thought to reduce recolonization opportunities and to ultimately displace populations downstream, but the ecological consequences of lost diversity above the barriers are largely unknown.2. The susc… Show more

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Cited by 9 publications
(9 citation statements)
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“…Nevertheless, the results of our simulation model suggest that net downstream movement is a strong possibility where multiple barriers are present and upstream passage is challenging. This may have important conservation implications as net downstream movement could be a mechanism by which some fishes with poor jumping ability can become locally extinct above small barriers (Utzinger et al, 1998;Nislow et al, 2011;Schumann et al, 2019). As barriers can be densely distributed in rivers (e.g.…”
Section: Accepted Articlementioning
confidence: 99%
“…Nevertheless, the results of our simulation model suggest that net downstream movement is a strong possibility where multiple barriers are present and upstream passage is challenging. This may have important conservation implications as net downstream movement could be a mechanism by which some fishes with poor jumping ability can become locally extinct above small barriers (Utzinger et al, 1998;Nislow et al, 2011;Schumann et al, 2019). As barriers can be densely distributed in rivers (e.g.…”
Section: Accepted Articlementioning
confidence: 99%
“…Fish and aquatic macroinvertebrate populations are vulnerable to localized extirpation events as a result of the dynamic hydrological regimes (Fritz & Dodds, 2005; Lohr & Fausch, 1997; Poff & Ward, 1989). However, these species have life history characteristics that allow rapid recovery following stochastic disturbances when suitable habitats are available (Dodds et al, 2004; Lohr & Fausch, 1997; Schumann, Haag, Ellensohn, Redmond, & Graeb, 2019).…”
Section: Introductionmentioning
confidence: 99%
“…These works highlight loss of pelagicbroadcast spawning fishes from highly fragmented habitats during periods of extreme drought. Increases in the application of the ERH (Kerezsy, Gido, Magalhães, & Skelton, 2017;Perkin, Gido, Costigan, et al, 2015;Schumann, Haag, Ellensohn, Redmond, & Graeb, 2018) suggest that additional research on the mechanisms causing population extirpation during drought events is necessary for understanding ecological consequences of extreme low flow events in highly fragmented riverscapes. The ERH is contingent on disturbances causing either adult mortality prior to reproduction (e.g., Durham, Wilde, & Pope, 2006) or failed recruitment after reproduction (e.g., Rodger, Mayes, & Winemiller, 2016) at a pace more rapid than the duration of the disturbance.…”
mentioning
confidence: 99%
“…The ERH is contingent on disturbances causing either adult mortality prior to reproduction (e.g., Durham, Wilde, & Pope, 2006) or failed recruitment after reproduction (e.g., Rodger, Mayes, & Winemiller, 2016) at a pace more rapid than the duration of the disturbance. Increases in the application of the ERH (Kerezsy, Gido, Magalhães, & Skelton, 2017;Perkin, Gido, Costigan, et al, 2015;Schumann, Haag, Ellensohn, Redmond, & Graeb, 2018) suggest that additional research on the mechanisms causing population extirpation during drought events is necessary for understanding ecological consequences of extreme low flow events in highly fragmented riverscapes.…”
mentioning
confidence: 99%