Does diel variation in oxygen influence taxonomic and functional diversity of stream macroinvertebrates?

Maasri, Alain; Schechner, Anne; Erdenee, Bolortsetseg; Dodds, Walter K.; Chandra, Sudeep; Gelhaus, Jon K.; Thorp, James H.

doi:10.1086/705916

Cited by 9 publications

(1 citation statement)

References 44 publications

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“…Functional β-diversity metrics were first calculated for the entire trait dataset (28 traits described in 127 modalities, Appendix B), and then separately for the functional (sensu, Eltonnian niche, 17 traits in 78 modalities) and habitat (sensu, Grinnellian niche, 11 traits described in 49 modalities) aspects of the ecological niche. This traits categorization (Maasri, Schechner, et al, 2019; was used here to assess the main drivers for change in the ecological niche across the different FPZ-SO configurations. All pairwise β-diversity metrics were computed between sites in the lowest FPZ-SO configuration, and between sites of increasing FPZ-SOs configurations and the lowest corresponding FPZ-SO configuration.…”

Section: Taxonomic and Functional Diversitiesmentioning

confidence: 99%

Variation in macroinvertebrate community structure of functional process zones along the river continuum: New elements for the interpretation of the river ecosystem synthesis

Maasri

Thorp

Kotlinski

et al. 2021

River Research & Apps

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We examined how communities of macroinvertebrates occurring in functional process zones (FPZs) are affected by the location of FPZs in the river continuum. We delineated FPZs for three rivers displaying significant disparities in elevation, annual precipitation, valley shape, and other valley-scale hydrogeomorphic variables. We extracted corresponding macroinvertebrate community data from the US National Water Quality Monitoring Council database and matched it to the stream order (SO) and FPZ delineations. We examined community structure in the three rivers by partitioning the variances associated with the FPZ and SO delineations. Then, we examined community variation as patterns of beta-diversity for communities of FPZs in different SOs. In total, 23 FPZ-SO configurations were examined. SO and FPZ delineations contributed similarly to the variance in the structure of macroinvertebrate communities. Taxa turnover accounted for the majority of the compositional change in communities of FPZs along the river continuum, while the functional composition showed primarily a nested structure. Pairwise comparison of communities for each FPZ along the river continuum showed that significant differences in community composition occurred at high SO in the three examined rivers. In this manuscript, we show that communities of FPZs are only partially comparable along the river continuum as significant compositional changes occur when comparing communities of FPZs in distant SOs. We bring, therefore, new elements to improve the interpretation of the River Ecosystem Synthesis concept that can have wider implications for understanding the biocomplexity of hydrogeomorphic patchiness in river networks.

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Section: Taxonomic and Functional Diversitiesmentioning

confidence: 99%