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

Thornbrugh, Darren J.; Gido, Keith B.

doi:10.1139/f09-169

Cited by 54 publications

(59 citation statements)

References 39 publications

(38 reference statements)

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“…There are other reasons why confluences are important for river biodiversity including: provision of nutrient or prey subsidies (Wipfli and Gregovitch, 2002;Fernandes et al, 2004;Wellard-Kelly, 2013); the presence of unique confluence-zone habitats (Nakamoto, 1994;Franks et al, 2002;Kreb and Budiono, 2005); the amplification of competition amongst species (Besemer et al, 2013); and bi-directional filtering that affects organism dispersal (e.g. Thornbrugh and Gido, 2010;Wilson and McTammany, 2014;Czeglédi et al, 2015). Confluences may therefore be biodiversity hotspots in river networks (Benda et al, 2004b), where added biological value partly reflects increased physical heterogeneity produced by tributary-forced aggradation.…”

Section: Tributary-driven Aggradation In River Networkmentioning

confidence: 99%

Tributary connectivity, confluence aggradation and network biodiversity

Rice

2017

Geomorphology

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In fluvial networks, some confluences are associated with tributary-driven aggradation where coarse sediment is stored, downstream sediment connectivity is interrupted and substantial hydraulic and morphological heterogeneity is generated. To the extent that biological diversity is supported by physical diversity, it has been proposed that the distribution and frequency of tributary-driven aggradation is important for the magnitude and spatial structure of river biodiversity. Relevant ideas are formulated within the Link Discontinuity Concept and the Network Dynamics Hypothesis, but many of the issues raised by these conceptual models have not been systematically evaluated. This paper first tests an automated method for predicting the likelihood of tributary-driven aggradation in three large drainage networks in the Rocky Mountain foothills, Canada. The method correctly identified approximately 75% of significant tributary confluences and 97% of insignificant confluences. The method is then used to evaluate two hypotheses of the Network Dynamics Hypothesis: that linear-shaped basins are more likely to show a longitudinal, downstream decline in tributary-driven aggradation; and that larger and more compact basins contain more confluences with a high probability of impact. The use of a predictive model that included a measure of tributary basin sediment delivery, rather than symmetry ratio alone, mediated the outcomes somewhat, but as anticipated, the number of significant confluences increased with basin size and basin shape was a strong control of the number and distribution of significant confluences. Doubling basin area led to a 1.9-fold increase in the number of significant confluences and compact basins contained approximately twice as many significant confluences per unit channel length as linear basins. In compact basins, significant confluences were more widely distributed, whereas in linear basins they were concentrated in proximal reaches. Interesting outstanding issues include the possibility of using spatially-distributed sediment routing models to predict tributary-driven confluence aggradation and the need to gather ecological data sufficient to properly test for increases in local and network-scale biodiversity associated with significant confluences and their network-scale controls.

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Section: Tributary-driven Aggradation In River Networkmentioning

confidence: 99%

Tributary connectivity, confluence aggradation and network biodiversity

Rice

2017

Geomorphology

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“…The influences of downstream spatial factors on fish assemblages were illustrated in other river systems. In general, fish species richness declines with increasing distance to larger stream confluences of tributaries (Hitt & Angermeier, 2008), distance to stream mouth (Mullen et al, 2011) or a mainstem river (Pinto et al, 2009;Thornbrugh & Gido, 2010), and distance to ocean (Mercado-Silva et al, 2012), forward selection procedure were selected. The first and second axes accounted for 30.1 and 9.3% for the variation of species data, respectively.…”

Section: Determinants Of Fish Assemblagesmentioning

confidence: 99%

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Kang

Tao

et al. 2016

Hydrobiologia

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The East Asian monsoon and related seasonal rain belts are assumed to be significantly variable at intraseasonal, interannual, and interdecadal time scales, and largely determine the hydrology and ecological processes of the streams and rivers in this region. This study investigated the spatiotemporal variation in fish assemblages and the relative importance of local habitat and regional landscape variables in two protected streams in the middle Yangtze River basin. We hypothesized that the stream fish assemblages in this area are strongly influenced by the monsoon climate, and display a spatiotemporal variation in response to changes of stream flow regimes and physical habitats. The results show that species richness and abundance varied with both season and stream size. The distance to the downstream confluence site was the top important environmental factor, followed by altitude and downstream link. The results suggest that the fish assemblages within this protected watershed are mainly affected by regional landscape variables such as longitudinal position and stream position, but less by local habitat variables including water temperature and habitat types. The study highlights the importance of tributary connectivity and continuity to stream fish diversity in this area, indicating that restoration activities should preferentially recover the connectivity between upstream and downstream.Handling editor: M. Power

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“…Species richness has been found to be higher in tributaries that converge into large rivers (Osborne and Wiley 1992;Fausch et al 1984;Thornbrugh and Gido 2010). Numerous riverine species have been found to overwinter in backwaters where temperatures are less extreme (Raibley et al 1997;Dettmers et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Habitat associations of fish assemblages in the Cache River, Illinois

Bouska

Whitledge

2013

Environ Biol Fish

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Abstract:Fish and habitat were sampled by state agencies at 48 stations throughout the Cache River watershed, Illinois between 1992 and 2009. Two distinct fish assemblages were identified, one primarily found in the lower mainstem Cache River and a second found throughout tributaries and the upper mainstem Cache River. Using a canonical correspondence analysis, the distribution of fish species was largely explained by substrate, land use, drainage area and local habitat features. Creek chub, central stoneroller, fringed darter and fantail darter are species found to be positively associated with gravel substrate and forest. In contrast, black buffalo, gizzard shad, smallmouth buffalo, freshwater drum and bigmouth buffalo were positively associated with drainage area, silt, channel width and row crops. Cobble appears to be rare habitat associated with fringed darter, freckled madtom and fantail darter. Results suggest that substrate, land use and local habitat features influence fish assemblage within the Cache River watershed. This information contributes to both understanding aquatic community structure in a highly altered yet diverse watershed as well as management activities within the Cache River watershed.3

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

Cited by 54 publications

References 39 publications

Tributary connectivity, confluence aggradation and network biodiversity

Tributary connectivity, confluence aggradation and network biodiversity

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Habitat associations of fish assemblages in the Cache River, Illinois

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