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.

本研究于2004年11月至2005年10月期间，针对塔斯马尼亚州德恩特雷卡斯托海峡（D’Entrecasteaux Channel）、霍恩河口（Huon Estuary）及西北湾（North West Bay）开展了中型浮游动物（mesozooplankton）群落组成与结构调查，本次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符合近岸温带海洋生境的典型特征，其丰度呈现季节波动规律：夏、秋季丰度较高，冬、春季丰度偏低。桡足类（Copepods）是所有季节与采样站点总丰度的最主要贡献类群；枝角类（cladocerans）与尾海鞘类（appendicularians）的相对丰度则在春季和夏季更高。上述三大类群，连同磷虾（krill）及端足类（amphipods）的粪便颗粒，对沉积物捕集器（sediment traps）回收的有机质亦有显著贡献。底栖动物（benthic animals）的阶段性浮游幼体（meroplanktonic larvae）丰度呈现短期峰值，且往往会长时间在水体中缺失。空间分布特征方面，西北湾与德恩特雷卡斯托海峡的典型海洋物种占比更高，包括南方哲水蚤（Calanus australis）与Labidocera cervi；而真正的河口物种（如桡足类Gladioferens pectinatus）在霍恩河口的群落占比更为突出。