Factors influencing the longitudinal distribution of larval Hydropsychidae (Trichoptera) in a southern Appalachian stream system (U.S.A.)

  title={Factors influencing the longitudinal distribution of larval Hydropsychidae (Trichoptera) in a southern Appalachian stream system (U.S.A.)},
  author={Douglas H. Ross and James Buchanan Wallace},
The influence of physical habitat variables and suspended particulate organic matter (seston) on the distribution and production of eight species of larval Hydropsychidae was studied along a 6.4 km section of a southern Appalachian stream. Samples were collected at six stations encompassing stream orders 1–4 and an elevation range of 610 m. Multivariate analysis of covariance (using time as the covariable) and discriminant function analysis were used to examine habitat differences between the… 

Longitudinal zonation of larval Hydropsyche (Trichoptera: Hydropsychidae): abiotic environmental factors and biotic interactions behind the downstream sequence of Central European species

The aim of this review is to summarize the literature knowledge about how abiotic environmental factors and biotic interactions affect the sequentially overlapping longitudinal distribution of

Feeding habits and food resources of filter-feeding Trichoptera in a regulated mountain stream

Feeding habits provided partial explanations for the distinct longitudinal distribution patterns of filter-feeding Trichoptera observed in the regulated river.

Coexistence in a guild of filter feeding caddis larvae: do different instars act as different species?

Ontogenetic niche changes not only separated species instars from each other, but also profoundly changed the biotic as well as abiotic environment of the species at different phases of larval development.

Environmental and spatial characterisation of an unknown fauna using DNA sequencing – an example with Himalayan Hydropsychidae (Insecta: Trichoptera)

The results highlight the utility of DNA-based approaches using variable genetic markers (mitochondrial or ribosomal nuclear) for primary biodiversity assessment of poorly studied groups or regions and shows that DNA- based biodiversity measures are suitable for downstream applications, such as exploring fundamental questions in stream ecology.


  • Environmental Science
  • 2003
The study of relationships between organisms and environmental variables has been the major goal to be achieved by applied freshwater ecologists to predict and determine water quality (e.g., see

Tufa Barriers from a Caddisfly's Point of View: Streams or Lake Outlets?

Community composition and structure is only to some degree influenced by microhabitat characteristics, but rather by their general position within the barrage-lake system, i.e., longitudinal distribution and thereby availability of different food resources.

Evaluation of Deposited Sediment and Macroinvertebrate Metrics Used to Quantify Biological Response to Excessive Sedimentation in Agricultural Streams

The results suggest that the coarse-level deposited sediment metric, visual estimate of fines, and the fine-level biological index, MFBI, may be useful in biomonitoring efforts aimed at determining the impact of anthropogenic sedimentation on stream biotic integrity.

Strategies for coexistence in two species of New Zealand Hydropsychidae (Trichoptera)

Competition between species may be reduced by the presence of selective predators, that coexistence is maintained by periodic disturbance which reduces competition effects, and that interspecific competition is negated by segregation of either lifehistories or feeding strategies, and diet or microhabitat preferences.

Variations in benthic macroinvertebratefauna as indicator of land use in the Ken River, central India

Ordination shows that the Caenidae and Heptageniidae are characteristic at semi-natural location, Leptophlebiidae, Hydropsychidae, Glossosomatidae at urban while Thiaridae and Chironomidae at agricultural locations.




It is suggested that net-spinning sites are in short supply and that differences in their use are necessary for stable coexistence, and both sequential distribution patterns and ecological distinctions between species in the same river section could effectively partition the supply of net- Spinning sites or food between the species.

Abundance patterns of filter-feeding Caddisflies (Trichoptera : Hydropsychidae) and seston in a Montana (U.S.A.) lake outlet

The abundance patterns of four species of net-spinning caddisflies were studied in a Montana (U.S.A.) lake outlet stream and generally agree with a published model of filter-feeder / seston interactions in lake outlets.

Distribution of the Family Hydropsychidae (Trichoptera) in the Savannah River Basin of North Carolina, South Carolina and Georgia

Hydropsychids were collected along the length of the Savannah River and its headwaters and tributaries. Species distribution was correlated with chemical and physical properties of water, altitude

Feeding ecology of three species of Hydropsyche (Trichoptera: Hydropsychidae) in southern Ontario

Gut content analysis indicated seasonality in food types ingested and food habits were more similar between species in third instars than in later instar, and later instars usually contained more animal material and less detritus than third instar.

Effects of food quality on the growth of three Hydropsyche species (Trichoptera: Hydropsychidae)

The results suggest autotrophy may be a very significant factor in energy flow within stream ecosystems, especially in terms of filter-feeder diversity and abundance.

A Multivariate Statistical Approach to the Hutchinsonian Niche: Bivalve Molluscs of Central Canada.

  • R. Green
  • Environmental Science
  • 1971
The use of multiple discriminant analysis to identify the significant and independent ecological factors separating species distributions is proposed and discussed and a generally applicable measure of environmental heterogeneity based upon this type of analysis is proposed.

Life history patterns of some species of Hydropsyche (Trichoptera: Hydropsychidae) in southern Ontario

Life history patterns are described for five species of Hydropsyche in the Credit and Humber rivers, finding species that overwintered in the final or penultimate larval instar were more likely to mature early and to be bivoltine than species overwintering in younger instars.

Some Relationships between Systematics and Trophic Ecology in Nearctic Aquatic Insects, with Special Reference to Trichoptera

In general, an ecological analysis of Nearctic Trichoptera at the generic level appears to provide a reasonable indication of the energy resources available in aquatic habitats.


Bird populations were sampled on Walker Branch Watershed, a primarily deciduous forest located in Anderson County, Tennessee, to test for differences in abundance categories of each bird species with respect to 28 habitat variables and indicated that some bird species were distributed to specific habitat variables.

Production and Potential Seston Utilization by Parapsyche cardis and Diplectrona modesta (Trichoptera: Hydropsychidae) in Two Streams Draining Contrasting Southern Appalachian Watersheds

Production of Parapsyche cardis Ross and Diplectrona modesta Banks was estimated in two first-order southern Appalachian streams and suggests that the major impact of these net spinners is on the animal fraction of the seston.