Effects of reservoir connectivity on stream fish assemblages in the Great Plains

Falke, Jeffrey A.; Gido, Keith B.

doi:10.1139/f05-233

Cited by 46 publications

(41 citation statements)

References 33 publications

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“…Although we are unaware of any previous investigations of fish diversity within delta habitats, our results are similar to a study conducted on plants wherein plant diversity was higher within delta habitats than reservoirs (Johnson, 2002). Moreover, Falke and Gido (2006) found higher fish species richness at the confluence of tributary streams with reservoirs than in the tributary streams themselves. These confluence habitats may be similar to the Niobrara River delta.…”

Section: Discussionsupporting

confidence: 85%

Patterns of fish diversity in a mainstem Missouri River reservoir and associated delta in South Dakota and Nebraska, USA

Kaemingk

Graeb

Hoagstrom

et al. 2007

River Research & Apps

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There is an expansive and expanding delta at the confluence of the Niobrara and Missouri Rivers in the Lewis and Clark Reservoir. The delta provides diverse aquatic habitat that is somewhat similar to the historic Missouri River and to remnant river habitats. As such, the delta may have relatively high fish species diversity compared to lentic reservoir habitats. To compare patterns of fish diversity between the delta and reservoir habitats, we collected fish in several nursery habitats in both areas using four gear types (seine, gill net, electrofisher and fyke net) on three occasions (July, August and September) in 2005. Species richness was higher in the delta (n ¼ 34) than the reservoir (n ¼ 22). Thirteen species composed more than 1% of delta collections while only four species composed more than 1% of reservoir collections. Species diversity (Fisher's a) was also significantly higher in the delta. Higher species diversity in the delta may be explained by higher habitat diversity. These results suggest that newly forming deltas have the potential to protect and restore fish species diversity, because they retain natural river functions such as sediment transport and habitat formation.

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Section: Discussionsupporting

confidence: 85%

Patterns of fish diversity in a mainstem Missouri River reservoir and associated delta in South Dakota and Nebraska, USA

Kaemingk

Graeb

Hoagstrom

et al. 2007

River Research & Apps

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“…Smith and Kraft (2005) also found that confluence link (watershed size of stream segments immediately downstream of sites) was a significant predictor of fish assemblage structure in the Beaverkill-Willowemoc watershed in New York. Similarly, Falke and Gido (2006a) showed that confluence sites between streams and reservoirs (i.e., stream sites within the floodplain of the reservoir) had higher total nonnative and reservoir species richness than sites 4-16 km upstream of those confluences, suggesting a localized effect of reservoirs. Close proximity to a large river also can influence variability of stream fish assemblages, as sites closer to interface zones were found to be more temporally variable in an adventitious Illinois stream than sites more distant to those interfaces (Schaefer and Kerfoot 2004).…”

Section: Introductionmentioning

confidence: 91%

Influence of spatial positioning within stream networks on fish assemblage structure in the Kansas River basin, USA

Thornbrugh

Gido

2010

Can. J. Fish. Aquat. Sci.

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We found that riverine confluences had localized effects (within 20 km) on stream fish assemblages of the Kansas River basin. The majority of variation in fish assemblages occurred from east to west and along a stream size gradient. After controlling for the influences of longitude and stream size, distance of sample sites from streams 5th order accounted for a small proportion of taxonomic variability. However, species richness was significantly higher and assemblage structure was different in tributary stream segments directly connected to larger-ordered streams, suggesting that the effects of spatial position within this stream network were greatest in close proximity to tributary-mainstem confluences. Fish collections from three intensively sampled tributaries also indicated an abrupt change in species assemblages between mainstem river sites and tributary sample sites above confluences, followed by a gradual taxonomic change with increasing distance up to 20 km from the confluence. Changes in fish assemblages were associated with the reduced abundance of adult stream species near the confluence with the mainstem, rather than the occurrences of riverine species in the tributary.Résumé : Les confluences des cours d'eau ont des effets bien localisés (sur une distance de moins de 20 km) sur les peuplements de poissons d'eau courante dans le bassin versant de la rivière Kansas. La plus grande partie de la variation dans les peuplements de poissons se produit d'est en ouest et suivant un gradient de taille des cours d'eau. Une fois qu'on a tenu compte des influences de la longitude et de la taille des cours d'eau, la distance entre le point d'échantillonnage et les cours d'eau d'ordre 5 explique un petit pourcentage de la variabilité taxonomique. Cependant, la richesse spécifique est significativement plus élevée et la structure du peuplement différente dans les sections de tributaires qui sont reliées directement à des cours d'eau d'ordre supérieur, ce qui indique que les effets de la position spatiale dans le réseau hydrographique sont maximaux près des confluences des tributaires et du cours principal. Des récoltes de poissons dans trois tributaires fortement échantillonnés montrent aussi un changement abrupt dans les peuplements de poissons entre les sites du cours principal de la rivière et les sites d'échantillonnage des tributaires en amont de la confluence, suivi d'un changement taxonomique graduel en fonction de la distance pouvant se manifester jusqu'à 20 km de la confluence. Les changements dans les peuplements de poissons s'expliquent par une abondance réduite d'espèces adultes de ruisseau près de la confluence avec le cours principal plutôt que par la présence d'espèces de rivière dans le tributaire.[Traduit par la Rédaction]

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“…in Ken River support great variety of fauna (Kaemingk et al 2007). Moreover, it is a well established fact that there is occurrence of higher species richness at the confluence of tributary streams with the main river than in the tributary streams (Falke & Gido 2006). Further, the low diversity of fish documented in streams associated with Ken River is mainly due to the drying of streams during summer.…”

Section: Discussionmentioning

confidence: 98%

Fish diversity and assemblage structure in Ken River of Panna landscape, central India

Johnson¹,

Parmar²,

Ramesh³

et al. 2012

J. Threat. Taxa

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Effects of reservoir connectivity on stream fish assemblages in the Great Plains

Cited by 46 publications

References 33 publications

Patterns of fish diversity in a mainstem Missouri River reservoir and associated delta in South Dakota and Nebraska, USA

Patterns of fish diversity in a mainstem Missouri River reservoir and associated delta in South Dakota and Nebraska, USA

Influence of spatial positioning within stream networks on fish assemblage structure in the Kansas River basin, USA

Fish diversity and assemblage structure in Ken River of Panna landscape, central India

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