2020
DOI: 10.1002/rra.3554
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Influence of habitat heterogeneity and bed surface complexity on benthic invertebrate diversity in a gravel‐bed river

Abstract: Maintaining or restoring physical habitat diversity is a central tenet of sustainable river management, yet a link between habitat and ecological diversity in fluvial systems has long remained equivocal. The lack of consistent evidence partly reflects the problems of characterizing habitat in ways that are ecologically meaningful. This paper assesses the influence of habitat heterogeneity and complexity on macroinvertebrate assemblages in a mountain gravel‐bed river. With the use of 0.1‐m resolution data obtai… Show more

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Cited by 7 publications
(5 citation statements)
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“…This result is consistent with the idea that waterborne eDNA accumulates as it passes through rivers and estuaries (Barnes & Turner, 2016;Deiner et al, 2016). However, an increase in biodiversity downstream in riparian and estuarine ecosystems has also been associated with increasing habitat heterogeneity, complexity, and sea connectivity toward river deltas (Béjar et al, 2020;Rice et al, 2006), which can confound the richness accumulation hypothesis discussed here. Nevertheless, the detection of freshwater species such as creole perch (P. trucha)…”
Section: Discussionsupporting
confidence: 89%
“…This result is consistent with the idea that waterborne eDNA accumulates as it passes through rivers and estuaries (Barnes & Turner, 2016;Deiner et al, 2016). However, an increase in biodiversity downstream in riparian and estuarine ecosystems has also been associated with increasing habitat heterogeneity, complexity, and sea connectivity toward river deltas (Béjar et al, 2020;Rice et al, 2006), which can confound the richness accumulation hypothesis discussed here. Nevertheless, the detection of freshwater species such as creole perch (P. trucha)…”
Section: Discussionsupporting
confidence: 89%
“…Dépret et al ., 2019; Staentzel et al ., 2020), fluvial ecology (e.g. Kondolf and Wolman, 1993; Gibbins et al ., 2007; Tena et al ., 2013; Haschenburger, 2017; Béjar et al ., 2020), and channel evolution (e.g. Liébault and Piégay, 2002; Comiti et al ., 2011; Liébault et al ., 2013; Vázquez‐Tarrío et al ., 2019b), amongst others.…”
Section: Introductionmentioning
confidence: 99%
“…mosaics comprised of multiple habitat types) influence biological diversity, we quantified habitat‐weighted sediment size and habitat diversity at 100 m extents across the riverscape. These two metrics were used because they integrate attributes of multiple habitat types into single predictor variables that have been shown to strongly influence invertebrate assemblages (Death and Winterbourn 1995, Rice et al 2001, Brosse et al 2003, Béjar et al 2020). We first calculated habitat‐weighted sediment size and habitat diversity for contiguous 100 m rectangular cross sections.…”
Section: Methodsmentioning
confidence: 99%