Diversity patterns in terrestrial dipteran communities

Hövemeyer, Klaus

doi:10.1046/j.1365-2656.1999.00292.x

Cited by 22 publications

(10 citation statements)

References 33 publications

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“…The different forms of taxon accumulation curves at the various sites and simulated communities observed in the present study are supported by many previous observations in different organism groups (e.g., Kilburn 1964, Martin 1981, James and Wamer 1982, Karr 1991b, Rosenzweig 1995, Farnsworth and Ellison 1996, Longino and Colwell 1997, Hö vemeyer 1999. This phenomenon has been related to several factors, including habitat diversity and complexity and the size of species pools (e.g., Martin 1981, Angermeier and COMPARISONS OF ECOLOGICAL COMMUNITIES FIG.…”

Section: Effect Of Sample Size On Community Comparisonssupporting

confidence: 91%

“…For example, a sample may mean a set of sampling sites and sample size is the number of sampling sites in ecological surveys. A set of collection units from a site or community may be pooled to create a single sample (Colwell and Coddington 1994, Farnsworth and Ellison 1996, Cao et al 1998, Hö vemeyer 1999. Here the use of the terms agrees with statistical definitions.…”

Section: Terminologymentioning

confidence: 99%

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Comparison of Ecological Communities: The Problem of Sample Representativeness

Cao

Williams

Larsen

2002

Ecological Monographs

105

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Obtaining an adequate, representative sample of ecological communities to make taxon richness (TR) or compositional comparisons among sites is a continuing challenge. Although randomization in the collection of sample units is often used to assure that sampling is representative, randomization does not convey the concept of how well samples represent the community or site from which they are drawn. In ecological surveys, how well a sample represents a community or site literally means the similarity in taxon composition and relative abundance between a sample and the community from which it is drawn. Using both field and simulated data, we show that the proportion of the total taxon richness at a site (%TTR) achieved with a fixed sample size varies across sites, which in turn causes changes in site-to-site differences in observed TR with sample size. This means that equal-sized samples may differentially represent the communities from which they are drawn. However, the similarity of a sample to the community from which it is drawn cannot be measured directly because the taxon composition and relative abundance of the community is usually unknown. We propose to estimate it by measuring the average similarity among replicate samples randomly drawn from a community, i.e., autosimilarity, which is measured with Jaccard Coefficient in this study. Using the same data sets, we found that:(1) samples of equal size from different sites or communities achieved different levels of autosimilarity, with lower levels achieved in taxon richer sites, indicating variation in how well samples of equal size represent their respective communities; (2) %TTR was positively and almost linearly correlated with autosimilarity, indicating that autosimilarity might be a good predictor of TTR; and (3) when samples were compared at the same level of autosimilarity, similar %TTRs across different sites were achieved (i.e., the relative differences in taxon richness among sites became independent of sample size). We conclude that standardization on autosimilarity, rather than on sample size, can improve the accuracy of taxon richness comparisons.

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Section: Effect Of Sample Size On Community Comparisonssupporting

confidence: 91%

Section: Terminologymentioning

confidence: 99%

Comparison of Ecological Communities: The Problem of Sample Representativeness

Cao

Williams

Larsen

2002

Ecological Monographs

105

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“…This in turn determines the diversity of predatory, parasitic and symbiotic species. Diversity of detritivore communities in hedges is also influenced by the variety of leaf litter produced by different species of hedge pants (Hovemeyer, 1999). It is worth noting, however, that not all associations between plant and invertebrate diversity are necessarily directly causal.…”

Section: Botanical Compositionmentioning

confidence: 99%

A review of the ecology and conservation of hedgerow invertebrates in Britain

Maudsley

2000

Journal of Environmental Management

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“…In Australia, only 7,000 of the estimated 30,000 fly species have been documented (Yeates et al, 2003), many of which are found in the dipteran-rich tropical rainforests of north Queensland (Austin et al, 2004). While a number of studies on dipteran communities exist from natural temperate and tropical ecosystems (see Hövenmeyer, 1999;Hughes et al, 2000;Kitching et al, 2004;Wilson et al, 2007;Lambkin et al, 2011), there are almost no formal studies of this group in any countryside landscapes (but see Schweiger et al, 2007;Taillefer and Wheeler, 2012).…”

Section: Introductionmentioning

confidence: 99%