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

《2021年环境状况报告(SOE)》的海洋章节包含了从海洋数据流开发的多个专家模板。这一元数据记录描述了专家评估《海豚和江豚的状况和趋势》。<br/> *完整的专家评估PDF，包括图表(如果提供)，可在本记录的“在线资源”部分下载，名称为“专家评估2021--海豚和江豚”*<br/> <br/> <br/> 专家评审分类小组说明<br/> 根据分类标准，已知有20种海豚和1种海豚出现在澳大利亚水域(表1)。其中一些物种(例如普通海豚，Delphinus delphis)分布在全国各地，其他物种局限于特定纬度(例如暗色海豚)，其他物种则由高度受限于特定地区内的海湾和支流的种群组成(例如特有的澳大利亚金丝海豚Orcaella heinsohni)。<br/> 自2016年环境状况(SOE)报告以来，对澳大利亚金丝海豚(Blue Planet Ocean 2019)空间分布的进一步洞察，Bouchet等人。2021)，澳大利亚座头海豚(Sousa sahulens；Parra和Cagnazzi，2015，Hanf等人)。2016年，亨特等人。2017年；Raudino等人。2018a，Raudino等人。2018b，蓝色星球海洋2019，伯恩斯等人。2019年，亨特等人。2020)，印度-太平洋宽吻海豚(Tursiopsaduncus，Raudino等.2018a，蓝色星球海洋2019，Burns等人。2019年，豪希等人。2020)，普通海豚(Delphinus delphis，Mason et al.2016)和虎鲸(Orcinus orca，Jones et al.2019年，萨尔加多-肯特等人。2020)已经建立。<br/> <br/> 数据流(S)在专家评估中的应用<br/> 评估基于对自2016年国有企业评估以来发表的文献的审查--见纳入评估的数据的空间和时间覆盖范围的参考资料。<br/> <br/> <br/> 2021年国企评估总结[详见所附专家评估报告]<br/> <br/> ·2021年·<br/> 考核等级：良好<br/> 评估趋势：不明朗<br/> 可信度：证据有限或共识有限<br/> 信心趋势：证据有限或共识有限<br/> 可比性：等级和趋势与2016年的评估相当<br/> ·2016年·<br/> 考核等级：良好<br/> 评估趋势：不明朗<br/> 可信度：证据有限或共识有限<br/> 信心趋势：证据有限或共识有限<br/> 可比性：等级和趋势与2011年的评估有一定的可比性<br/> ·2011年·<br/> 考核等级：良好<br/> 评估趋势：稳定<br/> 可信度：证据有限或共识有限<br/> 信心趋势：证据有限或共识有限<br/> <br/> <br/> 2016年国企考核以来的变化<br/> 评估没有改变。

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". <br /> ***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"***<br /> <br /> ----------------------------------------<br /> <br /> DESCRIPTION OF TAXONOMIC GROUP FOR EXPERT ASSESSMENT<br /> 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). <br /> 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. <br /> <br /> DATA STREAM(S) USED IN EXPERT ASSESSMENT<br /> Assessment based on review of literature published since the 2016 SoE assessment – see references for spatial and temporal coverage of data incorporated into assessments. <br /> <br /> ----------------------------------------<br /> <br /> 2021 SOE ASSESSMENT SUMMARY [see attached Expert Assessment for full details]<br /> <br /> • 2021 •<br /> Assessment grade: Good<br /> Assessment trend: Unclear<br /> Confidence grade: Limited evidence or limited consensus<br /> Confidence trend: Limited evidence or limited consensus<br /> Comparability: Grade and trend are comparable to the 2016 assessment<br /> • 2016 •<br /> Assessment grade: Good<br /> Assessment trend: Unclear<br /> Confidence grade: Limited evidence or limited consensus<br /> Confidence trend: Limited evidence or limited consensus<br /> Comparability: Grade and trend are somewhat comparable to the 2011 assessment<br /> • 2011 •<br /> Assessment grade: Good<br /> Assessment trend: Stable<br /> Confidence grade: Limited evidence or limited consensus<br /> Confidence trend: Limited evidence or limited consensus<br /> <br /> ----------------------------------------<br /> <br /> CHANGES SINCE 2016 SOE ASSESSMENT<br /> Assessment has not changed.