Seasonal Succession in the Aquatic Insect Community of an Ozark Stream

McCord, Samuel B.; Lambrecht, Paula R.

doi:10.1080/02705060.2006.9665002

Cited by 2 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the potential exists to erroneously interpret low richness obtained from lower organism counts as evidence of impairment (Houston et al 2002). But richness may also vary for natural reasons, such as seasonal differences (e.g., McCord and Lambrecht 2006;Minshall 1981;Williams 1980) or differences associated with flow permanence (Feminella 1996). Variations corresponding to both these factors were noted in the present study.…”

Section: Discussionmentioning

confidence: 74%

Effects of subsample size on seasonal and spatial comparisons of stream macroinvertebrate communities

McCord¹,

Guha

Grippo

2007

Environ Monit Assess

Self Cite

View full text Add to dashboard Cite

We examined the effect of subsample size on the accuracy of information obtained from aquatic macroinvertebrate assemblage samples. Subsamples containing 100 organisms or 300 organisms were compared on the bases of processing time and the ability to discern ecological differences among samples. Independently of subsample size, assemblages differed between study streams, primarily reflecting an intermittent vs. permanent stream difference, and between seasons at most streams. It required, on average, two additional hours to process the larger subsamples. Larger subsamples gave significantly higher estimates of total richness and Ephemeroptera, Plecoptera, and Trichoptera (EPT) richness, but the relative abundances of many assemblage subsets (e.g., EPT organisms and most functional feeding groups) were similar using both subsample sizes. Larger subsamples did not typically enhance the ability to discriminate between samples from different seasons, but did more accurately distinguish among streams when differences were subtle. They also appeared to avoid Type I error in comparisons of compositionally similar reaches within a study stream.

show abstract

Section: Discussionmentioning

confidence: 74%

Effects of subsample size on seasonal and spatial comparisons of stream macroinvertebrate communities

McCord¹,

Guha

Grippo

2007

Environ Monit Assess

Self Cite

View full text Add to dashboard Cite

show abstract

“…In wadeable streams, substantial temporal variability in macroinvertebrate community composition has been documented (Minshall 1981;Robinson et al 1990;Armitage et al 1995) sometimes between periods as short as 2 weeks (McCord and Lambrecht 2006). Short-term fluctuations in the abundances of macroinvertebrate taxa in streams are likely attributable to life history dynamics or the consequences of disturbance (Robinson et al 1990).…”

Section: Introductionmentioning

confidence: 99%

Macroinvertebrate community structure and its seasonal variation in the Upper Mississippi River, USA: a case study

McCord¹,

Kuhl²

2013

Journal of Freshwater Ecology

View full text Add to dashboard Cite

We surveyed benthic macroinvertebrates in the Upper Mississippi River near Minneapolis and St. Paul, Minnesota, USA (1350-1380 river km) using Hester-Dendy multiplate samplers as artificial substrates. Two study sites were sampled in multiple seasons at two depths over two years during the period from 2007 to 2009. We examined the patterns of seven community metrics summarizing richness levels and/or relative abundances of major community subsets. Richness metrics were driven by rare (occurring in less than 10% of the samples) taxa but overall densities and relative abundances of major groups reflected the presence of a few dominant taxa. Using analysis of variance, community metrics differed between study years or sampling depths only sporadically, but consistently differed among survey periods. Non-metric multidimensional scaling analysis indicated samples primarily clustered by survey period (within years) and sampling depth at one of our sites and by study year and survey period at the other site. A relatively small number of taxa were consistently abundant in our study, many of which have been reported as community dominants in other large river studies. Annual variability in assemblage composition generally reflected atypically high numbers of one or more of these persistent dominants, and was likely related to differences in hydrological conditions between years. Seasonal variability, however, was relatively consistent between years at both study sites.

show abstract

Seasonal Succession in the Aquatic Insect Community of an Ozark Stream

Cited by 2 publications

References 7 publications

Effects of subsample size on seasonal and spatial comparisons of stream macroinvertebrate communities

Effects of subsample size on seasonal and spatial comparisons of stream macroinvertebrate communities

Macroinvertebrate community structure and its seasonal variation in the Upper Mississippi River, USA: a case study

Contact Info

Product

Resources

About