Spatiotemporal variation in flow-dependent recruitment of long-lived riverine fish: Model development and evaluation

Goto, Daisuke; Hamel, Martin J.; Hammen, Jeremy J.; Rugg, Matthew L.; Pegg, Mark A.; Forbes, Valery E.

doi:10.1016/j.ecolmodel.2014.10.026

Cited by 32 publications

(35 citation statements)

References 84 publications

(87 reference statements)

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“…Fragmentation has contributed to local extirpation of sturgeon in numerous rivers (Bemis & Findeis 1994, Ferguson & Duckworth 1997, Hensel & Holcik 1997. Dams act as barriers to upstream move ment to historic spawning areas (Bir stein 1993, DeVore et al 1995, Wei et al 1997, congregating migrating sturgeon and exposing them to harvest and the perils of poaching (Cohen 1997, Fernández-Pasquier 1999, and altering flows, affecting the success of natural sturgeon recruitment within rivers (Khoroshko 1972, Ivanov et al 1999, Jager et al 2002, Goto et al 2015, Haxton et al 2015. Moreover, variation in sturgeon abundance across the landscape has been attributed to the presence of hydroelectric generating stations (DeVore et al 1995, Haxton & Findlay 2008, Haxton et al 2014, demonstrating that dams can play a significant role in limiting the recovery processes for sturgeon.…”

Section: Recent Improvements and Continued Threatsmentioning

confidence: 99%

A global perspective of fragmentation on a declining taxon—the sturgeon (Acipenseriformes)

Haxton¹,

Cano²

2016

Endang. Species. Res.

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Acipenseriformes (sturgeons and paddlefishes) are considered to be one of the most globally imperiled taxon, with 25 of the 27 species listed by the International Union for the Conservation of Nature (IUCN). Overharvest, habitat degradation, fragmentation and water quality issues have contributed to their decline worldwide. These stressors have been ameliorated in some areas, but in others they remain a limiting factor to sturgeon. Barriers impeding upstream migrations to natural spawning areas and manifesting alterations to natural flows continue to compromise sturgeon recruitment and limit natural recovery. Watersheds in the Northern Hemisphere have been categorized as being strongly affected, moderately affected or unaffected based on the degree of fragmentation and water flow regulation. An overlay (i.e. intersect) of the sturgeons' status with this watershed categorization revealed that a small area remains in which sturgeon are not considered at risk and where rivers are unaffected in northern Canada. These relatively unperturbed populations provide a much needed opportunity to learn about sturgeon biology, habitat needs and reproductive potential in a natural riverine environment, which may facilitate conservation and recovery efforts in affected watersheds.

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Section: Recent Improvements and Continued Threatsmentioning

confidence: 99%

A global perspective of fragmentation on a declining taxon—the sturgeon (Acipenseriformes)

Haxton¹,

Cano²

2016

Endang. Species. Res.

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“…It is possible to find models that use different techniques, such as diffuse, multivariate and fuzzy logic approaches, and that allow the inclusion of the interaction between ecological variables (BOAVIDA et al, 2014;BENJANKAR et al, 2012;DARAIO et al, 2010;SILVA, 2010), including water quality parameters, such as temperatures, dissolved oxygen levels, biochemical oxygen demands and nutrients (SOUZA et al, 2014;MARSILI-LIBELLI et al, 2013;AYLLÓN et al, 2012b), among other potentialities. Such models vary in complexity, from one-dimensional models (GOTO et al, 2015) to those based on two- (YI et al, 2010) or three-dimensional hydraulic equations (DARAIO et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

One- And Two-Dimensional Ecohydraulic Modeling of Formoso River (Mg)

et al. 2016

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ABSTRACT:The objective of this study was to compare ecohydrological simulations from a onedimensional model (PHABSIM -Physical Habitat Simulation System) and a two-dimensional model (River2D) in order to indicate a reliable tool that could be used to determine public policies for the sustainable management of the water resources of the Formoso River basin (MG). The results from the calibration of hydraulic variables, namely, water depth and velocity, as well as habitat predictions for three fish species of the river were compared. The results showed that River2D was best suited to simulate ecohydrological features for the studied river stretch. Although PHABSIM presented a better fit of the hydraulic variables at the calibration process, the use of only three monitoring cross sections to compose the biotic model database compromised its habitat modeling. PHABSIM model was not able to accurately assess the actual characteristics of the physical habitat in the segments of the river located between the monitoring cross sections.

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“…Goto et al. () predicted that low‐water periods in rivers could result in a steady population decline and in a slowing of gonadal development. Additionally, Shovelnose Sturgeon will experience mortality during low‐water conditions when temperatures exceed 28°C (Hupfeld et al.…”

Section: Discussionmentioning

confidence: 99%

“…Not much is known about the resilience of Shovelnose Sturgeon during low‐ and high‐water fluctuations, but recent evidence has suggested that the flow dynamics of a river could influence the overall population characteristics of Shovelnose Sturgeon, resulting in low recruitment, high mortality, and slow growth (Goto et al. ; Hupfeld et al. ).…”

Section: Methodsmentioning

confidence: 99%

Population Characteristics of Shovelnose Sturgeon During Low‐ and High‐Water Conditions in the Lower Platte River, Nebraska

Hammen

Hamel

Rugg

et al. 2018

N American J Fish Manag

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Cycles of low‐ and high‐water periods (i.e., years) in river systems are natural occurrences, but a clear understanding of how cyclical climatological patterns affect fishes, especially long‐lived species, is lacking. We compared Shovelnose Sturgeon Scaphirhynchus platorynchus population dynamics between a low‐water period (2001–2004) and a high‐water period (2009–2012) in the lower Platte River, Nebraska. Low‐flow periods in the lower Platte River can cause disconnections between upstream and downstream reaches, resulting in isolated pools and elevated water temperatures that create stressful situations for aquatic life and potentially lead to mortality. Our data showed no measurable differences in key population indices between flow condition periods, which is consistent with current paradigms for long‐lived fish species. Shovelnose Sturgeon relative weights were generally greater than 80 during both low‐ and high‐water periods, and size structure did not differ between the two periods. Shovelnose Sturgeon abundances, however, were significantly greater during high‐water conditions compared to low‐water conditions. Shovelnose Sturgeon may have migrated to more suitable habitats during low‐water periods to seek refuge, later returning after conditions improved. Shovelnose Sturgeon and other riverine fishes have evolved in a variable environment and have been able to endure relatively minor anthropogenic changes within the lower Platte River. Rivers like the lower Platte River that have retained much of their original physical features and flow regimes are likely key components for the resistance and resilience of riverine species. However, as alterations to landscapes continue, and given the uncertainty surrounding future climate predictions, it is unknown how these riverine species will be able to adapt to future changes. Reducing anthropogenic changes that disrupt flow regimes and increasing connectivity among river systems could provide greater amounts of refuge for fish during stressful conditions, thus helping to protect these riverine species.

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Spatiotemporal variation in flow-dependent recruitment of long-lived riverine fish: Model development and evaluation

Abstract: Goto, Daisuke; Hamel, Martin J.; Hammen, Jeremy J.; Rugg, Mathew L.; Pegg, Mark A.; and Forbes, Valery E., "Spatiotemporal variation in flow-dependent recruitment of long-lived riverine fish: Model development and evaluation" (2014). Faculty Publications in the Biological Sciences. 369.

Cited by 32 publications

References 84 publications

A global perspective of fragmentation on a declining taxon—the sturgeon (Acipenseriformes)

A global perspective of fragmentation on a declining taxon—the sturgeon (Acipenseriformes)

One- And Two-Dimensional Ecohydraulic Modeling of Formoso River (Mg)

Population Characteristics of Shovelnose Sturgeon During Low‐ and High‐Water Conditions in the Lower Platte River, Nebraska

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