The habitat-scale ecohydraulics of rivers

Kemp, Joanna Lynn; Harper, David M.; Crosa, Giuseppe

doi:10.1016/s0925-8574(00)00073-2

Cited by 186 publications

(118 citation statements)

References 33 publications

Supporting

Mentioning

114

Contrasting

Unclassified

Order By: Relevance

“…Thus, vegetation patches are proficient in shielding swamp zones from erosion. Patchy vegetation provides a favorable habitat and species assortment, and generates areas of improved or reduced bed shear stresses [2,3]. With the straight acceptance of nutrients, creation of oxygen, and the detention of suspended deposits, immersed vegetation patches may affect the quality of water [4].…”

Section: Introductionmentioning

confidence: 99%

To Investigate the Flow Structure of Discontinuous Vegetation Patches of Two Vertically Different Layers in an Open Channel

Anjum

Ghani

Pasha

et al. 2018

Water

View full text Add to dashboard Cite

Abstract:In the present study, the flow structure of discontinuous double-layered vegetation patches was investigated using a 3D Reynolds stress turbulence model (RSM). The channel domain was built using GAMBIT (Geometry and Mesh Building Intelligent Toolkit). For the simulation and postprocessing, FLUENT (ANSYS) was used to analyze the distribution of the mean velocity, Reynolds stresses, and other flow properties against two different flow conditions. The results captured by the turbulence model at specific locations and the cross section are presented in the form of various velocity profiles and contour plots. In the gap portion, the velocity was visibly lower than that in the vegetation areas, while the influence of patch distribution was not visible in the overlying flow layer. The velocity profiles at critical locations were categorized by numerous modulation points and velocity projections close to the bed, principally for positions straight after the vegetation structures. A distinction in the velocity at the topmost of the smaller vegetation structure was prominent. Reynolds stresses, turbulent kinetic energy, and turbulence intensity exhibited large fluctuations inside the vegetation regions and just behind the vegetation structures compared with in the gap regions.

show abstract

Section: Introductionmentioning

confidence: 99%

To Investigate the Flow Structure of Discontinuous Vegetation Patches of Two Vertically Different Layers in an Open Channel

Anjum

Ghani

Pasha

et al. 2018

Water

View full text Add to dashboard Cite

show abstract

“…They characterize them by means of flow, depth and type of substratum (Pardo & Armitage 1997;Wood 1998;Beisel et al 1998aBeisel et al , b, 2000Parasiewicz 2001). Some authors term these units as "functional habitats" (Harper 1995;Harper et al 1998;Newson et al 1998;Kemp et al 1999), these two terms are the same (Kemp et al 2000). But there is not any definitive mesohabitat typology available (Maddock 1999).…”

Section: Introductionmentioning

confidence: 99%

Influence of morphohydraulic habitat structure on invertebrate communities (Ephemeroptera, Plecoptera and Trichoptera)

2008

View full text Add to dashboard Cite

Fluvial geomorphology proposes the methodology of cognition and assessment of the riverine landscape and points to the possibilities of exploitation of its results in hydrobiological research. Habitat structure of two reaches of the Drietomica brook (Biele Karpaty Mts, Slovakia) was assesed at level of morphological and morphohydraulic units in the sense of the River Morphology Hierarchical Classification (RMHC)). Physical habitats were described by flow hydraulics and substrate properties as directly measured variables (current velocity, depth, substrate size) and related variables (flow type, Froude and Reynolds numbers). According to the shear stress (expressed by Fr and Re), the morphological units were divided into two main groups -with low shear stress -pools, glides, edgewaters, bar nooks and bars; with high shear stress -riffles, runs, rapids and scours; characterized also by different Ephemeroptera, Plecoptera and Trichoptera (EPT) communities. The EPT communities were analyzed in relation to the morphological, hydraulic and substrate characteristics of the stream channel. The main environmental gradient responsible for the variation in EPT fauna was found using Principal Component Analysis and was related to gradient of flow in term of current velocity and other hydraulic attributes covered by Fr and Re numbers. The EPT communities (by means of abundance, feeding types, current, microhabitat and zonation preferences) showed preferences for different morphological units, flow type and current velocity. Depth and substrate grain size showed only weak relation to EPT communities.

show abstract

“…Furthermore, they may also influence water quality positively through the uptake of heavy metals and nutrients 3 and the production of oxygen in stagnant regions 19 . These factors may enable the development of stable habitats for terrestrial and aquatic wildlife [20][21][22] and spatial heterogeneity within the flow may encourage a spatial complexity in available habitats, thus promoting biodiversity within rivers 23 . Consequently, vegetation has become central to many river restoration schemes 16 .…”

Section: Introductionmentioning

confidence: 99%

The hydraulic description of vegetated river channels: the weaknesses of existing formulations and emerging alternatives

2014

View full text Add to dashboard Cite

. (2014) 'The hydraulic description of vegetated river channels : the weaknesses of existing formulations and emerging alternatives.', Wiley interdisciplinary reviews : water., 1 (6). pp. 549-560. Further information on publisher's website:http://dx.doi.org/10.1002/wat2.1044Publisher's copyright statement: This is the accepted version of the following article: Marjoribanks, T. I., Hardy, R. J. and Lane, S. N. (2014), The hydraulic description of vegetated river channels: the weaknesses of existing formulations and emerging alternatives. Wiley Interdisciplinary Reviews: Water, 1 (6): 549-560, which has been published in nal form at http://dx.doi.org/10.1002/wat2.1044. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

show abstract

The habitat-scale ecohydraulics of rivers

Cited by 186 publications

References 33 publications

To Investigate the Flow Structure of Discontinuous Vegetation Patches of Two Vertically Different Layers in an Open Channel

To Investigate the Flow Structure of Discontinuous Vegetation Patches of Two Vertically Different Layers in an Open Channel

Influence of morphohydraulic habitat structure on invertebrate communities (Ephemeroptera, Plecoptera and Trichoptera)

The hydraulic description of vegetated river channels: the weaknesses of existing formulations and emerging alternatives

Contact Info

Product

Resources

About