Sum or mean in calculation of qualitative scoring methods using the Dragonfly Biotic Index, and an alternative approach facilitating conservation prioritization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F24%3AA25038DM" target="_blank" >RIV/61988987:17310/24:A25038DM - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/24:73627819

Result on the web

<a href="https://www.nature.com/articles/s41598-024-62017-y" target="_blank" >https://www.nature.com/articles/s41598-024-62017-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-024-62017-y" target="_blank" >10.1038/s41598-024-62017-y</a>

Result language

angličtina

Original language name

Sum or mean in calculation of qualitative scoring methods using the Dragonfly Biotic Index, and an alternative approach facilitating conservation prioritization

Original language description

Qualitative scoring methods are tools for rapid freshwater health assessments. Total score is often calculated as the sum or mean of the values of the species involved, with minor nuances in interpretation, but with significant implications. We used the Dragonfly Biotic Index (DBI) calculated on Central European odonate species to demonstrate these implications. Each species within a community has a score ranging from 0 (widespread generalists) to 9 (sensitive specialists). A total score is calculated as the sum of the scores of all species (DBI<jats:sub>sum</jats:sub>) or is calculated by dividing by species richness (DBI<jats:sub>mean</jats:sub>). Despite this duality, there has been little debate on either approach. Using simulated scenarios (high vs low richness, presence or absence of high- or low-scoring species), we tested the implications of DBI<jats:sub>sum</jats:sub> and DBI<jats:sub>mean</jats:sub> and suggested a total score calculation for conservation prioritization based on permutation. This algorithm shows the percentile of a community compared to a set of randomly assembled communities of the same species richness. We also present the ‘dragDBI’ package for the statistical software R, a tool for more automated DBI-based environmental health assessments. Our permutational calculation is applicable to other macroinvertebrate-based scoring methods, such as the Biological Monitoring Working Party and the Average Score Per Taxon.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10618 - Ecology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Volume of the periodical

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Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

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UT code for WoS article

001227448800002

EID of the result in the Scopus database

2-s2.0-85193546636