indicator species


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indicator species

[′in·də‚kād·ər ‚spē·shēz]
(ecology)
A species whose presence is directly related to a particular quality in its environment at a given location.
References in periodicals archive ?
First of all, within the Transition unit, a subcoastal subtype (S2a) and an inland one (S2b) can be identified; in particular, in the subcoastal subtype, elevation values are lower, alluvial sediments and clays prevail, and most indicator species are hygrophilous (e.
Indicator species analysis (ISA) examines the relationship between species occurrence and abundance data and groups of sites (Dufrene and Legendre, 1997).
As the interest of this study was to identify possible indicator species of disturbance along the observed gradient, we calculated species abundance per disturbance in each vegetation patch (high, medium and low in shrubland; and high, medium and low in tropical dry forest).
TWINSPAN (Two Way Indicator Species Analysis) was applied for general classification of flora of Wah Cantonment which had produced Two Way Clustered Dendogram.
01 Table 3 Indicator Species Analysis by Habitat Type and Sampling Period Species abbreviation (indicator value, p-value) Habitat Type BBS PP Pre Post Vaav Neag Pasa Agpr (68.
We also expected that habitat types with greater structural heterogeneity, such as treed and wetland habitats, would have more indicator species and higher richness than more uniform habitats, such as alpine and short shrub.
This will help prepare communities to address key vulnerabilities to climate change, conserve snow leopards as the flagship and indicator species of Asia s high mountain landscape health, and provide practical and measurable demonstrations that advance a vision for water security and sustainable mountain development across Asia.
Finally, we used indicator species analysis (ISA; Dufrene and Legendre, 1997) to identify the fish species that were indicative of each period.
Hartley and Mark Brideau, state fisheries biologists, used fish stunners to survey the stream, a survey that turned up a variety of fish species, including black-nosed dace, a coldwater indicator species, but no trout.
Butterflies are a key indicator species of the health of our environment - if they are struggling, other species are struggling also," says Sir David.