Invertebrate recolonization patterns in the hyporheic zone of a gravel stream

Schmid‐Araya, J. M.

doi:10.4319/lo.2000.45.4.1000

Cited by 29 publications

(30 citation statements)

References 14 publications

(26 reference statements)

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“…By contrast, small species, such as rotifers, have a faster spatiotemporal turnover than larger ones (Schmid-Araya 2000) and may respond to microhabitat changes outside the spatial scale of the current study. Moreover, sediment particle-size distributions display single-fractal and multifractal patterns if smaller particle sizes are included in the analysis (Posadas et al 2001).…”

Section: Discussionmentioning

confidence: 72%

“…Experiments conducted in the SB showed that small organisms are the first to colonize new habitats, followed by medium to large species (Schmid-Araya 2000), which does not concur with the idea of species invasion around an 'optimum body size' (Blackburn & Gaston 1994). Small organisms are able to track changes in a fluctuating environment rapidly, becoming abundant in short-lived niches (Stead 2002) in all benthic habitats.…”

Section: Discussionmentioning

confidence: 98%

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Scaling in stream communities

Schmid

Tokeshi²,

Schmid‐Araya

2002

Proc. R. Soc. Lond. B

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Scaling relationships between population density (N) and body size (W ), and of their underlying size distributions, can contribute to an understanding of how species use resources as a function of size. In an attempt to resolve the controversy over the form of scaling relationships, an extensive dataset, comprising 602 invertebrate species, was obtained from two geographically separate stream communities (Seebach in Austria and Mynach in Wales). We analysed the temporal consistency of the N-W relationship, which was subjected to ordinary least squares (OLS), bisector (OLS BIS ) and quantile regressions, and speciessize spectra with seasonally collated data. Slopes of seasonal OLS BIS regressions did not depart from Ϫ1 in either community, indicating a seasonally convergent scaling relationship, which is not energetically constrained. Species-size spectra may scale with habitat complexity, providing an alternative explanation for the observed body-size scaling. In contrast to the right-skewed species-size frequency distributions of single-species assemblages, the size spectra of these benthic communities exhibited 'central tendencies', reflecting their phyletic constitution. The shape of species body-mass spectra differed between the two communities, with a bimodal and seasonally convergent pattern in the Seebach community and a seasonally shifting unimodality in the Mynach community. The body-size spectra of large, mostly insect, species (greater than or equal to 1 mm) scaled to seasonal variations in habitat complexity (i.e. fractal D), suggesting that habitat structure constrains the community organization of stream benthos.

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Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 98%

Scaling in stream communities

Schmid

Tokeshi²,

Schmid‐Araya

2002

Proc. R. Soc. Lond. B

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“…The surrounding stream bed remained unchanged and consisted of nonuniform cobbles and gravel. Cylinders were left in situ for 21 days, sufficient time to allow for colonisation by invertebrates and for fine sediments to accumulate (Schmid-Araya, 2000;Bo et al, 2007;Pacioglu et al, 2012). Five of each colonisation cylinder design were installed in both the riffle head and tail, providing a total of twenty colonisation samples at each riffle site (100 cylinders in total).…”

Section: Experimental Design and Invertebrate Samplingmentioning

confidence: 99%

Fine sediment deposition and interstitial flow effects on macroinvertebrate community composition within riffle heads and tails

Mathers

Wood

2016

Hydrobiologia

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The distribution of macroinvertebrates in the heads and tails of riffles were examined in an in situ field experiment under stable baseflow conditions. Paired colonisation cylinders were used to examine the influence of vertical hydraulic exchange (upwelling and downwelling) and horizontal interstitial flow on the patterns of sedimentation and invertebrate colonisation. Sedimentation rates were greatest in cylinders permitting vertical and horizontal flow (VHE cylinders), and were significantly lower (29%) in cylinders where only vertical flow and ingress of fine sediment were possible (VE cylinders). The results demonstrate that horizontal interstitial flows represent an important pathway for fine sediment transport. Differences in fine sediment accumulation were also observed between riffle heads and tails. Significantly higher sedimentation rates were recorded in riffle tails, with the macroinvertebrate communities characterised by larger proportions of fine sediment tolerant taxa. In contrast, riffle head communities were characterised by greater proportions of sediment sensitive taxa, and in the case of VHE cylinders, shredders and EPT taxa. The results demonstrate that spatial differences in fine sediment deposition are evident at the riffle scale as a function of vertical and horizontal subsurface flows and that these factors play a key role in the distribution of macroinvertebrate fauna.

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“…This space provides habitat [1] [2] and refuge from ca-tastrophic events for aquatic insects [3] [4]; maintains ecosystem stability [5] [6] by controlling stream metabolism [7] [8] and retaining and cycling nutrients [6] [9] [10].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Surface Water Velocity on Hyporheic Interchange

Sickbert¹,

Peterson

2014

JWARP

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When evaluating hyporheic exchange in a flowing stream, it is inappropriate to directly compare stream stage with subsurface hydraulic head (h) to determine direction and magnitude of the gradient between the stream and the subsurface. In the case of moving water, it is invalid to ignore velocity and to assume that stage equals the net downward pressure on the streambed. The Bernoulli equation describes the distribution of energy within flowing fluids and implies that net pressure decreases as a function of velocity, i.e., the Venturi Effect, which sufficiently reduces the pressure on the streambed to create the appearance of a downward gradient when in fact the gradient may be upward with stream flow drawing water from the subsurface to the surface. A field study correlating the difference between subsurface head and stream stage in a low-gradient stream indicates that the effect is present and significant: shallow subsurface head increases less quickly than stage while deeper subsurface head increases more quickly. These results can substantially improve conceptual models and simulations of hyporheic flow.

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Invertebrate recolonization patterns in the hyporheic zone of a gravel stream

Cited by 29 publications

References 14 publications

Scaling in stream communities

Scaling in stream communities

Fine sediment deposition and interstitial flow effects on macroinvertebrate community composition within riffle heads and tails

The Effects of Surface Water Velocity on Hyporheic Interchange

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