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A Comparison of Two Biotic Indices, AMBI and BOPA/BO2A, for assessing the Ecological Quality Status (EcoQS) of Benthic Macro-invertebrates

Abstract : 1 - The assessment of quality status of Transitional Aquatic Ecosystems remains a challenge for the ecologists. 2 - Here, we compared the results of two common indices (AMBI - Ecological Groups and BOPA/BO2A -Taxonomic Sufficiency) from samples coming from the north-eastern Atlantic and Mediterranean Sea. Both biotic indices rely on distinct assessments of species sensitivity/tolerance. 3 - Six studies provided the raw data that permitted AMBI and BOPA to be compared. A total 922 data element was available, most of them from the Seine estuary (78%). The database was later divided into three sub-sets: French Atlantic Transitional Waters, Mediterranean Coastal Waters and Mediterranean Lagoons. 4 - Both indices' values demonstrated a strong correlation; however, the BOPA index had a tendency to overestimate the EcoQS compared to the values obtained from AMBI index, mainly due to discrepancies between 'high' and 'good' quality. 5 - New thresholds for BOPA/BO2A index are proposed in order to reduce this overestimation.
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https://hal-insu.archives-ouvertes.fr/insu-00665105
Contributor : Valérie Casado-Malaizé <>
Submitted on : Wednesday, February 1, 2012 - 11:20:38 AM
Last modification on : Thursday, October 1, 2020 - 12:28:02 PM

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A. De-La-Ossa-Carretero, Jean-Claude Dauvin. A Comparison of Two Biotic Indices, AMBI and BOPA/BO2A, for assessing the Ecological Quality Status (EcoQS) of Benthic Macro-invertebrates. Transitional Waters Bulletin, 2010, 1, pp.12-24. ⟨10.1285/i1825229Xv4n1p12⟩. ⟨insu-00665105⟩

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