NESP MaC Project 2.7 - Aerial survey of the Southern Right Whale ‘western’ sub-population off southern Australia

这份记录概述了NESP海洋和沿海枢纽桥接研究-“澳大利亚南部外海南露脊鲸'西部'亚群空中调查”。有关此项目的特定数据输出，请参阅与此元数据关联的子记录。<br /> --------------------<br /> <br /> 自1993年以来，对南露脊鲸的空中调查一直在澳大利亚南部海岸进行，从西澳大利亚州的珀斯到南澳大利亚州的塞杜纳，作为监测其恢复的长期计划的一部分。调查数据提供了这一“西部”人口的长期人口趋势，并作为国家人口评估的一部分，提供了对与“东部”人口联系的理解。NESP海洋生物多样性中心资助了2015-2020年的航空调查，海洋和沿海中心资助了2021年的调查。(See项目1.26：https：//catalogue.aodn.org.Au/geonetwork/srv/eng/catalogue.search#/metadata/b85b2c7d-4631-477a-9217-2cae65f9cf0a）<br /> <br /> 2022年的调查确保了这一濒危物种长期人口趋势数据的不间断时间序列。考虑到非年度繁殖周期（通常每三年一次），这一点尤其重要，因此年度调查对于估计种群趋势和关键生活史参数（产犊间隔）以跟踪物种恢复情况保持可接受的精度至关重要。需要继续监测种群，以评估种群是否有较长期和持续的变化（种群规模和产犊间隔），如最近的目击和种群趋势数据所示。<br /> <br /> 输出<br /> ·相对丰度和种群趋势的估计与长期航空调查目击相比[数据集]<br /> ·个体鲸鱼照片识别数据- 2021-22赛季[图像-发布到ARWPIC]<br /> ·最终技术报告，详细说明在调查区域内观察到的南露脊鲸的总数，它们的性别（以及可能的生命阶段）和个体的空间分布[书面]

This record provides an overview of the NESP Marine and Coastal Hub bridging study - "Aerial survey of the Southern Right Whale ‘western’ sub-population off southern Australia". For specific data outputs from this project, please see child records associated with this metadata.<br /> --------------------<br /> <br /> Aerial surveys of Southern Right Whales have been conducted across the southern Australian coast from Perth, WA to Ceduna, SA since 1993, as part of a long-term program to monitor their recovery. The surveys data provide a long-term population trend for this ‘western’ population, and provide an understanding of connectivity with the ‘eastern’ population as part of a national population assessment. The NESP Marine Biodiversity Hub funded the aerial surveys in 2015–2020 and the Marine and Coastal Hub funded the survey in 2021. (See Project 1.26: https://catalogue.aodn.org.au/geonetwork/srv/eng/catalog.search#/metadata/b85b2c7d-4631-477a-9217-2cae65f9cf0a)<br /> <br /> The 2022 survey ensures an uninterrupted time series in the long-term population trend data for this Endangered species. This is particularly important given the non-annual breeding cycle (typically every three years), such that annual surveys are essential to maintain an acceptable level of precision in estimating population trends and key life history parameters (calving intervals) to track the recovery of the species. Continued monitoring of the population is needed to evaluate whether there is a longer term and continuous change (in population size and calving intervals) in the population as indicated by recent sightings and population trend data.<br /> <br /> Outputs<br /> • Estimate of relative abundance and population trend compared to long-term aerial survey sightings [dataset]<br /> • Individual whale photo-identification data - 2021-22 season [imagery - published to ARWPIC]<br /> • Final technical report detailing overall numbers of southern right whales observed within the survey region, their gender (and life stage where possible) and spatial distribution of individuals [written]