Effect of water removal on introduced caddisflies from a tropical mountain stream

McIntosh, Mollie; Benbow, M. Eric; Burky, Albert J.

doi:10.1051/limn/2003024

Cited by 18 publications

(40 citation statements)

References 21 publications

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“…Other studies have shown that stream diversions lower overall habitat suitability for many native tropical species, also allowing for the invasion and successful colonization of certain introduced species (McIntosh et al, 2002(McIntosh et al, , 2003Brasher, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…In regions such as Hawaii and neo-tropical regions that are subject to torrential, seasonal rainfall patterns, small running water systems are highly vulnerable to anthropogenic disturbances, yet continue to be overlooked (Flecker and Feifarek, 1994). The native gobies, shrimps and snails have received the most research attention in Hawaiian stream studies, with only a few recent on the macroinvertebrate communities (Kido, 1997a;McIntosh et al, 2002McIntosh et al, , 2003Benbow et al, 2003;Benbow et al, 2005). Macroinvertebrate communities can provide information on trophic changes that can have consequences for stream food web structure.…”

Section: Introductionmentioning

confidence: 99%

“…Macroinvertebrate communities can provide information on trophic changes that can have consequences for stream food web structure. These organisms are a major food source for many predatory native fish and affect periphytic community structure (Kido, 1997a;McIntosh et al, 2002McIntosh et al, , 2003Benbow et al, 2003;Benbow et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Structural and functional changes of tropical riffle macroinvertebrate communities associated with stream flow withdrawal

McIntosh

Schmitz

Benbow

et al. 2008

River Research & Apps

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Tropical island streams worldwide are threatened by existing or proposed dams and diversions that remove freshwater for human use; yet, there have been few studies that address the effects on aquatic communities. The objective of this study was to quantify changes in tropical macroinvertebrate communities associated with stream flow withdrawal. Benthic macroinvertebrates were collected from riffle habitats located above and below a stream diversion on Maui, Hawaii, from June to August 2000. Native and introduced taxa were identified from both locations. The most dominant taxon was midges (Diptera: Chironomidae) followed by two introduced caddisflies, Cheumatopsyche analis (Banks) (Trichoptera: Hydropsychidae) and Hydroptila potosina (Buenoa-Soria) (Trichoptera: Hydroptilidae). A native shrimp, Atyoida bisulcata, and beach fly, Procanace sp. (Diptera: Canacidae), were either eliminated from or significantly reduced below the diversion. Mean total macroinvertebrate densities were greater above (13 357 individuals/m 2 ) the diversion compared to below (10 360 individuals/m 2 ). Mean total macroinvertebrate biomass was significantly reduced by 60 per cent below the diversion, but specific taxa did not show this effect. These results suggest that diverted stream flow limited macroinvertebrate colonization and growth, expressed as reduced community density and biomass, which may alter the structure and function of other trophic levels within tropical stream food webs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural and functional changes of tropical riffle macroinvertebrate communities associated with stream flow withdrawal

McIntosh

Schmitz

Benbow

et al. 2008

River Research & Apps

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“…Changes in the benthic community structure were often assessed by examining taxonomic compositions along the stream continuum (Grubaugh et al 1996, González et al 2003. Spatial variations have been attributed to habitat characteristics (e.g., Brown 1984, Brown et al 1995, Boyero 2003, but also to stochastic temporal fluctuations of the environment (Ives & Kopfer 1997, McIntosh et al 2003. Based on the dynamic equilibrium concept (Curry 1972), streams form a balance between physical parameters (such as width, depth, velocity, and sediment load), and biological factors.…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal patterns of benthic invertebrate communities in an intermittent river (North Africa)

Arab

Lek

Lounaci

et al. 2004

Ann. Limnol. - Int. J. Lim.

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“…Within this framework, the persistence or elimination of a species thus depends on biological attributes (Townsend and Hildrew, 1994;Usseglio-Polatera et al, 2000), and on habitat characteristics McIntosh et al, 2003) respectively.…”

Section: Introductionmentioning

confidence: 99%

Assessment of an artificial intelligence technique in investigating habitat partitioning by coexisting benthic invertebrates in gravel-bed rivers

et al. 2005

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Artificial neural networks were used to pattern the use and partition of riverbed mesohabitats by four coexisting mayflies (Ephemera danica, Rhithrogena semicolorata, Caenis sp., and Serratella ignita), in a fast-flowing stream. Sixty-six samples were taken from the various mesohabitat types throughout a one-year period. Water depth, current velocity, substratum composition, and particulate organic matter were used to describe the mesohabitats within each sample unit. The species and abiotic data were computed separately with the self-organizing map (SOM) algorithm. Then, using the k-means algorithm, clusters were detected on the maps and the sampling units were classified separately for each variable and for species densities. Four clusters could be identified on the SOM according to nine environmental variables, and this classification was related to the morphodynamic conditions, chiefly with respect to substrate composition and current velocity. Similarly, three subsets were derived from the SOM according to gradients of species densities. The coincidence between 'abiotic' and 'mayfly' clusters showed that: (1) E. danica, Caenis sp. and S. ignita used similar mesohabitats, but E. danica was temporally segregated; (2) competition for space was likely to occur between Caenis sp. and S. ignita; and (3) R. semicolorata was spatially segregated from the three other mayflies. The method is discussed with reference to two alternative techniques: habitat preference curves, and multivariate analyses. The former implies a greater computation effort and is rather convenient under applied perspectives. The second approach faces the basic assumption that non-linear modelling methods should be preferred for dealing with ecological data which vary and covary in non-linear fashions. By combining ordering and clustering abilities (and other advantages such as gradient analysis and detection of outliers), SOM provides a visual and efficient way to bring out structures in the distribution of co-occurring species within multivariate microenvironments.

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Effect of water removal on introduced caddisflies from a tropical mountain stream

Abstract: Similar changes to macroinvertebrate communities would be expected below dams and diversions of streams in other tropical regions.

Cited by 18 publications

References 21 publications

Structural and functional changes of tropical riffle macroinvertebrate communities associated with stream flow withdrawal

Structural and functional changes of tropical riffle macroinvertebrate communities associated with stream flow withdrawal

Spatial and temporal patterns of benthic invertebrate communities in an intermittent river (North Africa)

Assessment of an artificial intelligence technique in investigating habitat partitioning by coexisting benthic invertebrates in gravel-bed rivers

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