2021 State of the Environment Report Marine Chapter – Expert Assessment – State and Trend – Dolphins and porpoises

• Other Authors: CSIRO Oceans and Atmosphere (hasAssociationWith), Department of Agriculture, Water and the Environment (DAWE) (publisher), Emma Flukes (pointOfContact), Evans, Karen (author), National Environmental Science Program (NESP) Marine Biodiversity Hub (hasAssociationWith), Raudino, Holly (author), Western Australian Department of Biodiversity, Conservation and Attractions (hasAssociationWith)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: biota; dolphins; porpoises; population status; expert assessment; Pacific; Orca; Orcinus orca
• Online Access: https://doi.org/10.26198/PN7A-5V86; https://researchdata.edu.au/2021-state-environment-dolphins-porpoises/1734207

Statement: QUALITY OF DATA USED IN THE ASSESSMENT Assessment based on review of literature published since the 2016 SoE assessment – see references for an overview and assessment of the quality of data incorporated into assessments. Credit Peer reviews of this assessment was provided by: Trent Timmiss (AFMA) The Marine chapter of the 2021 State of the Environment (SoE) report incorporates multiple expert templates developed from streams of marine data. This metadata record describes the Expert Assessment "State and Trend of dolphins and porpoises". ***A PDF of the full Expert Assessment, including figures and tables (where provided) is downloadable in the "On-line Resources" section of this record as "EXPERT ASSESSMENT 2021 - Dolphins and Porpoises"*** --- DESCRIPTION OF TAXONOMIC GROUP FOR EXPERT ASSESSMENT Following taxonomic standards, 20 dolphin species in the Family Delphinidae and one species in the Family Phocoenidae are known to occur in Australian waters (Table 1). A number of these species (e.g. common dolphins, Delphinus delphis) are distributed nationally, others are restricted to particular latitudes (e.g. dusky dolphin, Lagenorhychus obscurus) and others consist of populations that are highly restricted to embayments and tributaries within particular regions (e.g. the endemic Australian snubfin dolphin, Orcaella heinsohni). Since the 2016 State of the Environment (SoE) report further insights into the spatial distribution of Australian snubfin dolphin (Blue Planet Marine 2019, Bouchet et al. 2021), Australian humpback dolphins (Sousa sahulensis; Parra and Cagnazzi 2015, Hanf et al. 2016, Hunt et al. 2017; Raudino et al. 2018a, Raudino et al. 2018b, Blue Planet Marine 2019, Burns et al. 2019, Hunt et al. 2020), Indo-Pacific bottlenose dolphins (Tursiops aduncus, Raudino et al. 2018a, Blue Planet Marine 2019, Burns et al. 2019, Haughey et al. 2020), common dolphins (Delphinus delphis, Mason et al. 2016) and orca (Orcinus orca, Jones et al. 2019, Salgado-Kent et al. 2020) have been established. ...