The Ecology and Biogeography of Heard Island Marine Benthos

Collections of 23 macroinvertebrate taxa associated with Durvillaea antarctica holdfasts and 58 invertebrate taxa associated with artificial substrata collectors are described from shallow-water and intertidal habitats at Heard Island. The fauna sampled possessed strong biogeographic affinities with the Kerguelen Island fauna and, to a slightly lesser extent, the fauna recorded at Macquarie Island. The fauna possessed negligible affinity with the Antarctic. Experiments involving the offshore tethering of Durvillaea antarctica holdfasts indicated epifaunal invertebrates rapidly abandoned detached holdfasts, but that the few species surviving after one day can probably survive long periods adrift. The fields in this dataset are:Taxon (species)DistributionLocalityDateControl

本数据集记述了采自赫德岛（Heard Island）浅海与潮间带生境的、与南极牛海带（Durvillaea antarctica）固着器（holdfasts）相关的23个大型无脊椎动物类群（macroinvertebrate taxa），以及与人工基质采集器（artificial substrata collectors）相关的58个无脊椎动物类群（invertebrate taxa）。所采集的动物区系与凯尔盖朗群岛（Kerguelen Island）的动物区系具有极强的生物地理亲缘性（biogeographic affinities），与麦夸里岛（Macquarie Island）记录的动物区系亲缘性稍弱。该动物区系与南极地区的动物区系亲缘性极弱。针对南极牛海带固着器开展的近海系留（offshore tethering）实验表明，表生无脊椎动物（epifaunal invertebrates）会迅速脱离脱落的固着器，但在1天后仍存活的少数物种或可在长期漂流状态下存活。本数据集包含以下字段：类群（Taxon (species)）、分布（Distribution）、采集地（Locality）、采集日期（Date）、对照组（Control）。