Larval Development, Substrate Preference, and Feeding Habits of Polycentropus Variegatus Milne in Model Stream Channels (Trichoptera Polycentropodidae)

Wevers, Mary Jo; Wisseman, Robert W.

doi:10.1007/978-94-009-4043-7_48

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…In the subalpine lake Øvre Heimdalsvatn (southern Norway), P. flavomaculatus was dominant in stones too, but was not exclusively found in this type of habitat (Lillehammer 1978). For another Polycentropus species, P. variegatus Banks, a preference for gravel rather than bedrocks or silt was reported in stream channels in the Oregon Coast Range (Wevers and Wisseman 1987). Therefore, it could be possible that Polycentropus species are more prone than Plectrocnemia to survive in fine substrates, following the oxyregulatory capacity of the genus (Jacobsen and Brodersen 2008).…”

Section: Species-environment Relationships and The Altitudinal Distrimentioning

confidence: 99%

Environmental factors prevail over dispersal constraints in determining the distribution and assembly of Trichoptera species in mountain lakes

Mendoza

Ventura

Catalan

2015

Ecology and Evolution

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Aiming to elucidate whether large-scale dispersal factors or environmental species sorting prevail in determining patterns of Trichoptera species composition in mountain lakes, we analyzed the distribution and assembly of the most common Trichoptera (Plectrocnemia laetabilis, Polycentropus flavomaculatus, Drusus rectus, Annitella pyrenaea, and Mystacides azurea) in the mountain lakes of the Pyrenees (Spain, France, Andorra) based on a survey of 82 lakes covering the geographical and environmental extremes of the lake district. Spatial autocorrelation in species composition was determined using Moran’s eigenvector maps (MEM). Redundancy analysis (RDA) was applied to explore the influence of MEM variables and in-lake, and catchment environmental variables on Trichoptera assemblages. Variance partitioning analysis (partial RDA) revealed the fraction of species composition variation that could be attributed uniquely to either environmental variability or MEM variables. Finally, the distribution of individual species was analyzed in relation to specific environmental factors using binomial generalized linear models (GLM). Trichoptera assemblages showed spatial structure. However, the most relevant environmental variables in the RDA (i.e., temperature and woody vegetation in-lake catchments) were also related with spatial variables (i.e., altitude and longitude). Partial RDA revealed that the fraction of variation in species composition that was uniquely explained by environmental variability was larger than that uniquely explained by MEM variables. GLM results showed that the distribution of species with longitudinal bias is related to specific environmental factors with geographical trend. The environmental dependence found agrees with the particular traits of each species. We conclude that Trichoptera species distribution and composition in the lakes of the Pyrenees are governed predominantly by local environmental factors, rather than by dispersal constraints. For boreal lakes, with similar environmental conditions, a strong role of dispersal capacity has been suggested. Further investigation should address the role of spatial scaling, namely absolute geographical distances constraining dispersal and steepness of environmental gradients at short distances.

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Section: Species-environment Relationships and The Altitudinal Distrimentioning

confidence: 99%

Environmental factors prevail over dispersal constraints in determining the distribution and assembly of Trichoptera species in mountain lakes

Mendoza

Ventura

Catalan

2015

Ecology and Evolution

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“…Los tricópteros también se ven muy influenciados por el tipo de sustrato disponible (MINSHALL, 1984;OSBORNE & HERRICKS, 1987); en las condiciones que hemos considerado naturales, los tricópteros muestran una asociación con los sustratos de tamaño intermedio, en oposición a los sustratos de tamaño pequeño (arenas y limos). Así, nuestras observaciones son acordes con lo apuntado por WEVERS & WISSEMAN (1987).…”

Section: Phyliiniunclassified

Efectos de la regulación sobre los macroinvertebrados en el río Segura (S.E. España)

Torralva¹

1995

Limnetica

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EFFECT OF THE RIVER REGULATION ON THE MACROINVERTEBRATES COMUNITY IN THE SEGURA RIVER (S.E. SPAIN).In order lo study the effects of the hydric regulation on the benthic macroinvertebrate communities, two close areas, with similar characteristics, were selected, one of them is regulated by an electric power factory.In these areas a monthly sampling was done. Samples from benthos and measurements of several physical and chemical parameters were taken. Obtained data were treated statistically in order to determine wether or not there is a relationship between the environmental conditions and the macroinvertebrate community.The global changes along the time of macroinvertebrates density have been clearly more uniform in the non regulated river comunity. The hydric regulation cause an increase on the relative significance to some taxons, like Tricoptera, Simulidae and Quironomidae, and this efect is due to the reofile quality of the area. However the efect of hydric regulation on Ephemeroptera, Coleoptera, Hydracarina and Plecoptera, are contrary to fore taxons, so they are more abundant in the non regulate river. Also, the zoobenthic of the regulate river occur an abundancy decrease of Plecoptera and Ephemeroptera.The most important effect observed of the hydrologic regulation on the physical river conditions is a substrate homogeneity, which produces a decrease of the habitat diversity for the invertebrates. So, in the regulated river a poorer community, with a lower diversity, has been observed.

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Influence of flow regulation on the macroinvertebrate riffle communities in four Mediterranean streams

Malo¹,

Morais²,

Pinto³

2002

SIL Proceedings, 1922-2010

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Larval Development, Substrate Preference, and Feeding Habits of Polycentropus Variegatus Milne in Model Stream Channels (Trichoptera Polycentropodidae)

Cited by 4 publications

References 4 publications

Environmental factors prevail over dispersal constraints in determining the distribution and assembly of Trichoptera species in mountain lakes

Environmental factors prevail over dispersal constraints in determining the distribution and assembly of Trichoptera species in mountain lakes

Efectos de la regulación sobre los macroinvertebrados en el río Segura (S.E. España)

Influence of flow regulation on the macroinvertebrate riffle communities in four Mediterranean streams

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