Invertebrate responses to stepwise and abrupt increases in non-scouring flow: The role of refugia

Imbert, J. Bosco; Perry, James A.

doi:10.1127/archiv-hydrobiol/146/1999/167

Cited by 55 publications

(76 citation statements)

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“…Density of macroinvertebrates may be reduced by flow alterations, by spates (Boulton et al 1992, Imbert & Perry 2000, as well as by droughts (Wood & Petts 1999, Humphries & Baldwin 2003. Due to the climate of the area, floods tend (5) 5 to be frequent from autumn to spring, whereas basal flows occur in summer.…”

Section: Discussionmentioning

confidence: 99%

Assessing impact of eucalyptus plantations on benthic macroinvertebrate communities by a litter exclusion experiment

Larrañaga

Basaguren

et al. 2006

Ann. Limnol. - Int. J. Lim.

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Section: Discussionmentioning

confidence: 99%

Assessing impact of eucalyptus plantations on benthic macroinvertebrate communities by a litter exclusion experiment

Larrañaga

Basaguren

et al. 2006

Ann. Limnol. - Int. J. Lim.

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“…Our intent was not to document changes following very high flow events (Fitzsimons and Nishimoto 1993) but rather to analyze responses to more frequent fluctuations in flow (Imbert andPerry 2000, Biggs andSmith 2002).…”

Section: Effects Of Recent Flow Events On Biotic Parametersmentioning

confidence: 99%

“…Hildrew and Townsend (1987) described how, in the course of the development of these ideas, there has been a change in emphasis from thinking that river communities are controlled primarily by physical factors, to the view that biotic interactions are most influential, and then back to an intermediate position. Disturbance of river communities has been a central focus in this growth of lotic science, with much thought being given to how to define and quantify disturbance in systems that are inherently dynamic (Resh et al 1988, Poff 1992, Richter et al 1997, Bradt et al 1999, Imbert and Perry 2000, McCabe and Gotelli 2000, Gjerløv et al 2003. Disturbance can arise from many sources, but most attention has been devoted to disturbances resulting from changing flow conditions.…”

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confidence: 99%

Effects of Water Removal on a Hawaiian Stream Ecosystem

Kinzie¹,

Chong²,

Devrell³

et al. 2006

Pacific Science

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A 3-year study of Wainiha River on Kaua'i, Hawai'i, was carried out to determine the impact that water removal had on key stream ecosystem parameters and functions. The study area included a diversion dam for a hydroelectric plant that removes water at an elevation of 213 m and returns it to the stream about 6 km downstream at an elevation of 30 m. There were two highelevation sites, one with undiverted flow and one with reduced flow, and two low-elevation sites, one with reduced flow and one with full flow restored. Monthly samples were taken of instream and riparian invertebrates and plants. When samples from similar elevations were compared, dewatered sites had lower concentrations of benthic photosynthetic pigments than full-flow sites, and benthic ash-free dry mass (AFDM) was higher at the two low-elevation sites regardless of flow. Benthic chlorophyll a (chl a) and AFDM were higher in summer months than in the winter. Benthic invertebrate abundance was highest at the full-flow, low-elevation site and benthic invertebrate biomass was highest at the full-flow, high-elevation site. Season had only marginal effects on abundance and biomass of benthic invertebrates. Diversity of benthic invertebrates was higher at the more-downstream sites. Abundance of drifting invertebrates was highest at the site above the diversion dam and generally higher in winter than in summer months. Biomass of drifting invertebrates was also highest at the above-dam site but there was little seasonal difference. Almost all parameters measured were lowest at the site just downstream of the diversion dam. The biotic parameters responded only weakly to flows that had occurred up to 1 month before the measurements were made. Flow, elevation, and season interact in complex ways that impact ecosystem parameters and functions, but water diversion can override all these environmental factors.In the history of limnology, the study of rivers (lotic systems) has lagged behind that of lakes (lentic systems). By the first decades of the twentieth century the basic understanding of the dynamics of thermal stratification provided a common framework for numerous subsequent studies of lentic systems (Ruttner 1953, Hutchinson 1957. For a long time students of rivers had no such unifying theme: hydrologists studied channel formation and, more practically, flood control, and biologists tended to focus on game fish or the production of food for these fish (see Hynes 1970 and Cummins et al. 1995 for historical accounts). Realization of the importance of complex interactions between the geomorphological setting of the stream and the physical and biological properties of the stream system set the stage for a conceptual model of stream dynamics based on func-

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“…Today, experimental flumes of different typology have become a common tool to study the responses of biological communities to physical, chemical, hydrological manipulations, using behavioral and catastrophic drift as the measured response and based on the hypothesis that any invertebrate showing an immediate avoidance or displace-N o n -c o m m e r c i a l u s e o n l y ment reaction would rapidly drift (Holomuzki and Biggs, 2000;Imbert and Perry, 2000;Suren and Jowett, 2001;Mochizuki et al, 2006;Carolli et al, 2012;Fenoglio et al, 2013;Bruno et al, 2013Bruno et al, , 2016. Although drift catches in these simulations were often high, it is difficult to assess the significance of these responses, since if a high proportion of the benthos enters the drift for a short period of time, the drifting invertebrates may have originated from the area immediately downstream from the disturbance and could have returned rapidly to the benthos and thus not have been caught.…”

Section: Introductionmentioning

confidence: 99%

Settling distances of benthic invertebrates in a sediment mobilization simulation in semi-natural flumes

2015

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Invertebrate responses to stepwise and abrupt increases in non-scouring flow: The role of refugia

Cited by 55 publications

References 0 publications

Assessing impact of eucalyptus plantations on benthic macroinvertebrate communities by a litter exclusion experiment

Assessing impact of eucalyptus plantations on benthic macroinvertebrate communities by a litter exclusion experiment

Effects of Water Removal on a Hawaiian Stream Ecosystem

Settling distances of benthic invertebrates in a sediment mobilization simulation in semi-natural flumes

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