Riparian vegetation and sediment gradients determine invertebrate diversity in streams draining an agricultural landscape

Connolly, Niall M.; Pearson, Richard G.; Pearson, Benjamin

doi:10.1016/j.agee.2016.01.043

Cited by 21 publications

(16 citation statements)

References 56 publications

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“…Conductivity had a significant influence on the biota, although the maximum conductivity and the range measured were not high. The absence of major water quality influence reflected the undisturbed nature of all sites in this study, contrasting with studies that include sites impacted by agriculture and other human influence, both in the Wet Tropics (Pearson & Penridge, ; Connolly et al ., ) and elsewhere (e.g. Kaelin & Altermatt, ).…”

Section: Discussionmentioning

confidence: 99%

“…). Similar results were found for longitudinal stream gradients in the lowland Wet Tropics streams, in which macroinvertebrate assemblages were largely determined by sediment particle size, riparian vegetation and associated CPOM (Connolly et al ., ) and in experimental studies in which distribution of mayfly nymphs was closely related to current, substrata and detritus in a Wet Tropics stream (Hearnden & Pearson, ). Collectively, these results conform to the notion of habitats, detritus, disturbance and refugia being prime determinants of macroinvertebrate distribution (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Rabeni & Minshall, ; Townsend & Hildrew, ; Lake, ; Duan et al ., ; Schröder et al ., ). Interestingly, physical habitat was also more important than water quality for assemblages in agricultural areas in Brazil (Ferreira et al ., ), as is the case for the lowland Wet Tropics streams (Connolly et al ., ); in the latter case, high discharges diluted contaminants from diffuse inputs, although this was not so for point‐source pollution (Pearson & Penridge, ). Biotic influences are more likely to occur at the higher macroinvertebrate densities of the dry season, with competition for space and other resources possible, both between and among species (Pearson, ; Boyero, Pearson & Camacho, ; Leung et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…Identifying the main environmental influences on macroinvertebrate diversity and assemblage composition in streams is important for separating natural and human‐induced changes (e.g. Connolly, Pearson & Pearson, ), and has developed greatly since Percival & Whitehead () (e.g. Cummins & Lauff, ; Rabeni & Minshall, ; Duan et al ., ; Schröder et al ., ), including in tropical streams (Hearnden & Pearson, ).…”

Section: Introductionmentioning

confidence: 99%

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Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

et al. 2017

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Summary Understanding spatial and environmental drivers of undisturbed stream assemblages is important for separating natural and human‐induced changes, but has rarely been attempted for an entire tropical bioregion. We sampled riffle macroinvertebrate assemblages and measured associated biophysical variables in post‐wet and dry seasons from 68 streams of orders 1–5 across the Australian Wet Tropics, a small bioregion (18 497 km2) defined by its warm moist climate and closed‐forest vegetation. As climate and landscape were relatively uniform across the bioregion, we predicted that assemblages would be similar, with turnover (beta diversity) unrelated to distance, and with composition determined mainly by habitat. We identified 93 higher taxa. Density and richness of macroinvertebrates were greatest in the dry season because of habitat contraction and minimal flow disturbance. Richness was greatest in higher order streams. Relative abundance and richness of functional groups showed minor effects of catchment, lithology and stream order, and a positive relationship with altitude for richness of collectors, predators and shredders, and for abundance of shredders. Distance‐based linear modelling showed that among‐assemblage differences were explained by landscape‐scale variables (9.5% of the variation), stream size (13.0%), riparian characteristics (9.6%), water quality (4.6%), substratum (21.1%) and organic resources (22.4%); for models of individual taxa and functional groups, habitat and organic‐resource variables also predominated. Similarities among site assemblages differed little among catchments and there was no relationship between pairwise similarities of catchments and their geographical distances. Nestedness analysis confirmed that samples and catchment groupings were nested subsets of the total set of samples. Across the Australian Wet Tropics, uniformity of assemblages (identified to family or above) conformed to the bioregional classification, probably as a result of the great age of the region. The habitat variables that most influenced macroinvertebrate assemblages support the idea that a suite of biophysical influences is common to stream macroinvertebrate assemblages globally.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

et al. 2017

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“…Riparian vegetation has commonly been found to affect benthic macroinvertebrate production in a variety of ways (Nystr€ om et al 2003;Connolly et al 2016). It can reduce the amount of light input to a stream and consequently primary productivity in the form of periphyton biomass (Hill & Dimick 2002;Kiffney et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Riparian vegetation management for water temperature regulation: implications for the production of macroinvertebrate prey of salmonids

Ryan

Kelly‐Quinn

2016

Fisheries Management Eco

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The effect of riparian vegetation on the seasonal availability of macroinvertebrate prey for salmonids was examined. Although prey composition changed significantly between sampling seasons, overall prey density remained similar. It is often assumed that there is greater benthic production within streams without riparian vegetation, but this assumption was found to be dependent on stream size. The presence of riparian vegetation increased benthic macroinvertebrate density, but only in larger streams. Greater densities of prey of terrestrial origin were found in the drift of streams with riparian cover but only in spring. An unforeseen contributor to potential prey items for salmonids in streams with riparian vegetation was the increased presence of drifting prey of aquatic origin. The results further support riparian management as a viable tool for regulating instream temperatures without impacting on macroinvertebrate density. The presence of riparian vegetation can even increase salmonid prey availability in some instances.

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Erosion Management of Riparian Ecosystem in Coal Mining Area Through Selective Vegetation

Srivastava

Tripathi

2022

Environmental Management in India: Waste to Wealth

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Riparian vegetation and sediment gradients determine invertebrate diversity in streams draining an agricultural landscape

Cited by 21 publications

References 56 publications

Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

Stream macroinvertebrate assemblage uniformity and drivers in a tropical bioregion

Riparian vegetation management for water temperature regulation: implications for the production of macroinvertebrate prey of salmonids

Erosion Management of Riparian Ecosystem in Coal Mining Area Through Selective Vegetation

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