Detecting indicator species: Some extensions of the IndVal measure

J. Podaní, Béla Csányi

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The indicator value (IndVal) of a species has long been the most popular measure to express species importance in community classifications. Nevertheless, a few problems concerning the original definition of IndVal still require clarification and some modifications are also in order so as to exploit the capabilities of the method more fully. In particular, we propose novel component terms (specificity, concentration and fidelity) that may be incorporated in the calculation of IndVal and also suggest some minor, although important terminological amendments. We argue that the choice among these terms should largely depend on whether the target classification is based on abundance or presence-absence data. The expanded capabilities of the approach and the sensitivity of IndVal variants to the sharpness of classifications are illustrated by actual examples coming from a benthic macroinvertebrate survey along the Danube River and a study of dolomite grassland communities in the Buda Hills, Hungary. We found that analyses by the original IndVal plus the new variants may give a more complete picture on any classification than a particular selection among component terms of IndVal. The use of several indices simultaneously is particularly recommended when selection of indicator species is the primary objective of the study.

Original languageEnglish
Pages (from-to)1119-1124
Number of pages6
JournalEcological Indicators
Volume10
Issue number6
DOIs
Publication statusPublished - Nov 2010

Fingerprint

indicator species
taxonomy
Danube River
dolomite
Hungary
macroinvertebrates
grasslands
indicator
macroinvertebrate
grassland
river
methodology

Keywords

  • Classification
  • Fidelity
  • Indicator species
  • Specificity

ASJC Scopus subject areas

  • Ecology
  • Decision Sciences(all)
  • Ecology, Evolution, Behavior and Systematics

Cite this

Detecting indicator species : Some extensions of the IndVal measure. / Podaní, J.; Csányi, Béla.

In: Ecological Indicators, Vol. 10, No. 6, 11.2010, p. 1119-1124.

Research output: Contribution to journalArticle

Podaní, J. ; Csányi, Béla. / Detecting indicator species : Some extensions of the IndVal measure. In: Ecological Indicators. 2010 ; Vol. 10, No. 6. pp. 1119-1124.
@article{a07c52e35535420180ce53893c5ad52e,
title = "Detecting indicator species: Some extensions of the IndVal measure",
abstract = "The indicator value (IndVal) of a species has long been the most popular measure to express species importance in community classifications. Nevertheless, a few problems concerning the original definition of IndVal still require clarification and some modifications are also in order so as to exploit the capabilities of the method more fully. In particular, we propose novel component terms (specificity, concentration and fidelity) that may be incorporated in the calculation of IndVal and also suggest some minor, although important terminological amendments. We argue that the choice among these terms should largely depend on whether the target classification is based on abundance or presence-absence data. The expanded capabilities of the approach and the sensitivity of IndVal variants to the sharpness of classifications are illustrated by actual examples coming from a benthic macroinvertebrate survey along the Danube River and a study of dolomite grassland communities in the Buda Hills, Hungary. We found that analyses by the original IndVal plus the new variants may give a more complete picture on any classification than a particular selection among component terms of IndVal. The use of several indices simultaneously is particularly recommended when selection of indicator species is the primary objective of the study.",
keywords = "Classification, Fidelity, Indicator species, Specificity",
author = "J. Podan{\'i} and B{\'e}la Cs{\'a}nyi",
year = "2010",
month = "11",
doi = "10.1016/j.ecolind.2010.03.010",
language = "English",
volume = "10",
pages = "1119--1124",
journal = "Ecological Indicators",
issn = "1470-160X",
publisher = "Elsevier",
number = "6",

}

TY - JOUR

T1 - Detecting indicator species

T2 - Some extensions of the IndVal measure

AU - Podaní, J.

AU - Csányi, Béla

PY - 2010/11

Y1 - 2010/11

N2 - The indicator value (IndVal) of a species has long been the most popular measure to express species importance in community classifications. Nevertheless, a few problems concerning the original definition of IndVal still require clarification and some modifications are also in order so as to exploit the capabilities of the method more fully. In particular, we propose novel component terms (specificity, concentration and fidelity) that may be incorporated in the calculation of IndVal and also suggest some minor, although important terminological amendments. We argue that the choice among these terms should largely depend on whether the target classification is based on abundance or presence-absence data. The expanded capabilities of the approach and the sensitivity of IndVal variants to the sharpness of classifications are illustrated by actual examples coming from a benthic macroinvertebrate survey along the Danube River and a study of dolomite grassland communities in the Buda Hills, Hungary. We found that analyses by the original IndVal plus the new variants may give a more complete picture on any classification than a particular selection among component terms of IndVal. The use of several indices simultaneously is particularly recommended when selection of indicator species is the primary objective of the study.

AB - The indicator value (IndVal) of a species has long been the most popular measure to express species importance in community classifications. Nevertheless, a few problems concerning the original definition of IndVal still require clarification and some modifications are also in order so as to exploit the capabilities of the method more fully. In particular, we propose novel component terms (specificity, concentration and fidelity) that may be incorporated in the calculation of IndVal and also suggest some minor, although important terminological amendments. We argue that the choice among these terms should largely depend on whether the target classification is based on abundance or presence-absence data. The expanded capabilities of the approach and the sensitivity of IndVal variants to the sharpness of classifications are illustrated by actual examples coming from a benthic macroinvertebrate survey along the Danube River and a study of dolomite grassland communities in the Buda Hills, Hungary. We found that analyses by the original IndVal plus the new variants may give a more complete picture on any classification than a particular selection among component terms of IndVal. The use of several indices simultaneously is particularly recommended when selection of indicator species is the primary objective of the study.

KW - Classification

KW - Fidelity

KW - Indicator species

KW - Specificity

UR - http://www.scopus.com/inward/record.url?scp=77957862646&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77957862646&partnerID=8YFLogxK

U2 - 10.1016/j.ecolind.2010.03.010

DO - 10.1016/j.ecolind.2010.03.010

M3 - Article

AN - SCOPUS:77957862646

VL - 10

SP - 1119

EP - 1124

JO - Ecological Indicators

JF - Ecological Indicators

SN - 1470-160X

IS - 6

ER -