Correlation of environmental variables with patterns of distribution and abundance of common and rare freshwater macroinvertebrates

Faith, Daniel P.; Norris, RH

doi:10.1016/0006-3207(89)90006-2

Cited by 165 publications

(90 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To relate environmental variables to gradients in composition in nMDS ordinations, we used rotational vector fitting (Faith and Norris 1989). Vector fitting was used to find the direction of the maximum correlation of an environmental variable in an ordination of the vegetation data.…”

Section: Macrophyte Species Distributions Among Zonesmentioning

confidence: 99%

Spatial Dependency of Vegetation?Environment Linkages in an Anthropogenically Influenced Wetland Ecosystem

et al. 2004

View full text Add to dashboard Cite

Section: Macrophyte Species Distributions Among Zonesmentioning

confidence: 99%

Spatial Dependency of Vegetation?Environment Linkages in an Anthropogenically Influenced Wetland Ecosystem

et al. 2004

View full text Add to dashboard Cite

“…Faith and Norris (1989) did not consider subsampling approaches or a LR search but showed that rare taxa (not necessarily just LR ones) positively contributed to assemblage-environment relationships in streams of Australia. Cao et al (1998) concluded that rare taxa were not only important in bioassessment, but that their removal from data sets led to an unacceptable loss of ecological information.…”

Section: Evaluating Subsampling Approachesmentioning

confidence: 99%

Evaluating Subsampling Approaches and Macroinvertebrate Taxonomic Resolution for Wetland Bioassessment

King¹,

Richardson²

2002

Journal of the North American Benthological Society

153

114

View full text Add to dashboard Cite

Abstract. Methods for wetland bioassessment using macroinvertebrates are not well developed. Two of the most controversial issues in stream bioassessment, subsampling and taxonomic resolution, have yet to be quantitatively addressed for wetlands. Using a multivariate approach, we evaluated the efficacy of family-, genus-, and species-level assemblage data in reflecting the environment and distinguishing impaired sites from the reference condition. We used 5 basic levels of subsampling (100-, 200-, and 300-organism fixed counts; 10% and 25% fixed areas), an integrated subsample requiring a minimum fixed count and fixed area (100&10%), and 100-count and 10%-area subsamples coupled with a supplementary large-rare (LR) search. Data were obtained from 1.5-m 2 composite samples collected from 126 plots along a 10-km-long eutrophication gradient in the Florida Everglades. Our results suggest that effectiveness of subsampling depended more upon the minimum number of individuals retained than minimum area or proportion of the sample picked. Fixed-area subsamples were generally less efficient than fixed counts, with 200-and 300-individual fixed counts resulting in significantly greater assemblage-environment relationships and much higher accuracy in detecting impairment than 10% fixed area, despite averaging similar numbers of individuals. The greatest improvement with increasing subsample size was observed between fixed counts of 100 and 200 individuals; detecting impairment, in particular, was not markedly improved with subsample sizes Ͼ200 individuals. Supplementing subsamples with a LR search resulted in only very slight improvements in assemblage-environment relationships, but was effective in improving prediction accuracy, particularly for family-level data. However, family-level assemblage-environment relationships and abilities to detect impairment were inferior to genus-and species-level data, regardless of subsample size. Species-level data performed best, primarily because of the large proportion (Ͼ20%) of total species belonging to Chironomidae. The potential importance of Chironomidae to wetland bioassessment was further revealed through an evaluation of a tiered-taxonomic approach, which showed that non-Chironomidae family-level data tiered with species-level Chironomidae data produced results very similar to those obtained using genus-or species-level data exclusively. Our results suggest that fixed counts Ն200 or integrated fixed-area/fixed-count approaches that consistently obtain a minimum of 200 individuals should be considered as minimum subsample sizes for wetlands. We additionally advocate LR searches and recommend genus-or species-level taxonomy, particularly for the Chironomidae.

show abstract

“…Fifty random starts were made to the analysis and the solution with the lowest stress value selected (see Growns and Davis 1991). (Faith and Norris 1989;Belbin 1993). If they were higher than 5% of those derived from the simulated data, they were considered to be significant at the 0.05 level.…”

Section: Statistical Treatmentmentioning

confidence: 99%

Relationships between riparian buffer widths and the effects of logging on stream habitat, invertebrate community composition and fish abundance

Davies¹,

Nelson²

1994

Mar. Freshwater Res.

150

136

View full text Add to dashboard Cite

Impacts from the logging of Eucalyptus forest on stream habitat, macroinvertebrate abundance and diversity, and fish abundance were surveyed in Tasmania, Australia. Forty-five pairs of sites from 34 streams of 22.5 krn2 catchment area were each sampled once during summer in the period 1990-92. Each site pair consisted of an 'impacted' site downstream of a logging treatment and an upstream or closely matched 'paired control' site. Site pair treatments encompassed two logging methods (cable and conventional) with a range of riparian buffer strip widths (0-50 m) and included unlogged controls. Differences between site pair variables were used as test statistics for the detection of logging impacts. Logging significantly increased riffle sediment, length of open stream, periphytic algal cover, water temperature and snag volume. Logging also significantly decreased riffle macroinvertebrate abundance, particularly of stoneflies and leptophlebiid mayflies, and brown trout abundance. All effects of logging were dependent on buffer strip width and were not significantly affected by coupe slope, soil erodibility or time (over one to five years) since logging. All impacts of logging were significant only at buffer widths of <30 m. Minimum buffer widths for eliminating logging impacts on stream habitats and biota are discussed.

show abstract

Correlation of environmental variables with patterns of distribution and abundance of common and rare freshwater macroinvertebrates

Cited by 165 publications

References 31 publications

Spatial Dependency of Vegetation?Environment Linkages in an Anthropogenically Influenced Wetland Ecosystem

Spatial Dependency of Vegetation?Environment Linkages in an Anthropogenically Influenced Wetland Ecosystem

Evaluating Subsampling Approaches and Macroinvertebrate Taxonomic Resolution for Wetland Bioassessment

Relationships between riparian buffer widths and the effects of logging on stream habitat, invertebrate community composition and fish abundance

Contact Info

Product

Resources

About