Global Coverage of Cetacean Line-Transect Surveys: Status Quo, Data Gaps and Future Challenges
Global Coverage of Cetacean Line-Transect Surveys: Status Quo, Data Gaps and Future Challenges
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DOI：
10.1371/journal.pone.0044075
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发表时间：
2012-09-12
期刊：
影响因子：
3.7
通讯作者：
Harris, Catriona M.
中科院分区：
文献类型：
--
作者：
Kaschner, Kristin;Quick, Nicola J.;Harris, Catriona M.
需要了解鲸类种群的丰度、趋势和分布，为海洋保护工作、生态系统模型和空间规划提供信息。我们编制了一个地理空间数据库，其中包含来自专门视线横断面调查的已发表鲸目动物丰度数据，并对 1975 年至 2005 年全球进行的 430 次调查中的 47 个物种的超过 1100 个丰度估计值进行了编码。我们随后的分析揭示了调查覆盖范围内巨大的空间、时间和分类变异性以及差距。除南极水域外，调查范围偏向北半球，特别是美国和北欧水域。全面的，
Knowledge of abundance, trends and distribution of cetacean populations is needed to inform marine conservation efforts, ecosystem models and spatial planning. We compiled a geo-spatial database of published data on cetacean abundance from dedicated visual line-transect surveys and encoded >1100 abundance estimates for 47 species from 430 surveys conducted worldwide from 1975-2005. Our subsequent analyses revealed large spatial, temporal and taxonomic variability and gaps in survey coverage. With the exception of Antarctic waters, survey coverage was biased toward the northern hemisphere, especially US and northern European waters. Overall,