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Global-scale screening of non-native aquatic organisms to identify potentially invasive species under current and future climate conditions

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Relation http://eprints.cmfri.org.in/15451/
https://www.sciencedirect.com/science/article/pii/S0048969721029399
https://doi.org/10.1016/j.scitotenv.2021.147868
 
Title Global-scale screening of non-native aquatic organisms to identify potentially invasive species under current and future climate conditions
 
Creator Suresh, V V R
 
Subject Fisheries management
 
Description The threat posed by invasive non-native species worldwide requires a global approach to identify which intro-
duced species are likely to pose an elevated risk of impact to native species and ecosystems. To inform policy,

stakeholders and management decisions on global threats to aquatic ecosystems, 195 assessors representing
120 risk assessment areas across all six inhabited continents screened 819 non-native species from 15 groups
of aquatic organisms (freshwater, brackish, marine plants and animals) using the Aquatic Species Invasiveness
Screening Kit. This multi-lingual decision-support tool for the risk screening of aquatic organisms provides
assessors with risk scores for a species under current and future climate change conditions that, following a

statistically based calibration, permits the accurate classification of species into high-, medium- and low-risk cat-
egories under current and predicted climate conditions. The 1730 screenings undertaken encompassed wide

geographical areas (regions, political entities, parts thereof, water bodies, river basins, lake drainage basins,
and marine regions), which permitted thresholds to be identified for almost all aquatic organismal groups
screened as well as for tropical, temperate and continental climate classes, and for tropical and temperate marine
ecoregions. In total, 33 species were identified as posing a ‘very high risk’ of being or becoming invasive, and the
scores of several of these species under current climate increased under future climate conditions, primarily due
to their wide thermal tolerances. The risk thresholds determined for taxonomic groups and climate zones provide
a basis against which area-specific or climate-based calibrated thresholds may be interpreted. In turn, the risk
rankings help decision-makers identify which species require an immediate ‘rapid’ management action (e.g.
eradication, control) to avoid or mitigate adverse impacts, which require a full risk assessment, and which are
to be restricted or banned with regard to importation and/or sale as ornamental or aquarium/fishery
enhancement.
 
Publisher Elsevier
 
Date 2021-09-20
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/15451/1/Science%20of%20the%20Total%20Environment_2021_VVR%20Suresh_Copy%20of%20Global%20invasive%20risk%20assessment.pdf
Suresh, V V R (2021) Global-scale screening of non-native aquatic organisms to identify potentially invasive species under current and future climate conditions. Science of the Total Environment, 788. pp. 1-16. ISSN 0048-9697