Abundance and distribution of coastal, inshore zooplankton in the Huon Estuary and D'Entrecasteaux Channel, Tasmania: Sampling trip 21/01/2005.

Mesozooplankton community composition and structure were examined throughout the D’Entrecasteaux Channel, Huon Estuary and North West Bay, Tasmania, from November 2004 to October 2005, the data represented by this record was collected on the 21/01/2005.The composition of the mesozooplankton community was typical of inshore, temperate marine habitats, with seasonally higher abundance in summer and autumn and lower numbers in winter and spring. Copepods were the largest contributors to total abundance across all seasons and stations, while cladocerans and appendicularians were proportionally abundant in spring and summer. The faecal pellets of these three main groups, along with those of krill and amphipods, also contributed significantly to material recovered from sediment traps. Meroplanktonic larvae of benthic animals showed short-term peaks in abundance and were often absent from the water column for long periods. Spatially, North West Bay and the Channel had a higher representation of typically marine species, including Calanus australis and Labidocera cervi, while truly estuarine species, such as the copepod Gladioferens pectinatus, were more important in the Huon Estuary.

2004年11月至2005年10月，研究团队对塔斯马尼亚州丹特卡斯托海峡（D’Entrecasteaux Channel）、胡恩河口（Huon Estuary）及西北湾（North West Bay）全域的中型浮游动物（mesozooplankton）群落组成与结构开展了系统性调查；本记录对应的数据采集于2005年1月21日。该中型浮游动物群落组成契合近岸温带海洋生境的典型特征，其丰度呈现显著季节性变化：夏季与秋季丰度较高，冬季与春季丰度较低。在所有采样季节与站位中，桡足类（copepods）均为总丰度的首要贡献类群；而枝角类（cladocerans）与尾海鞘类（appendicularians）的丰度占比在春季与夏季更高。上述三大类群，连同磷虾（krill）和端足类（amphipods）的粪球，也对沉积物捕集器回收的有机质做出了显著贡献。底栖动物的阶段性浮游幼体（meroplanktonic larvae）丰度呈现短期峰值，且常长时间在水体中缺席。空间分布层面，西北湾与丹特卡斯托海峡的典型海洋物种占比更高，涵盖南方哲水蚤（Calanus australis）与颈肢异足水蚤（Labidocera cervi）；而真正的河口物种，如桡足类的栉角角水蚤（Gladioferens pectinatus），在胡恩河口的群落占比更为突出。