Abundance and distribution of coastal, inshore zooplankton in the Huon Estuary and D'Entrecasteaux Channel, Tasmania: Sampling trip 13/10/2005

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 13/10/2005.

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，研究人员对塔斯马尼亚州德恩特雷卡斯托海峡（D’Entrecasteaux Channel）、胡恩河口（Huon Estuary）及西北湾（North West Bay）的中型浮游动物（mesozooplankton）群落组成与结构进行了调查，本数据集对应的采集数据于2005年10月13日获取。
该中型浮游动物群落的组成特征与近岸温带海洋生境的典型模式相符，其丰度呈现季节性变化：夏季与秋季丰度较高，冬季与春季丰度较低。桡足类（Copepods）是所有调查季节与站位中总丰度的最大贡献类群；枝角类（cladocerans）与尾海鞘类（appendicularians）在春季和夏季的丰度占比相对更高。上述三大类群，以及磷虾（krill）和端足类（amphipods）的粪便颗粒，对沉积物捕获器回收的样品组分亦有显著贡献。底栖动物的暂时性浮游幼体丰度会出现短期峰值，且常长时间在水体中缺失。空间分布上，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Calanus australis和Labidocera cervi；而真正的河口物种，如桡足类Gladioferens pectinatus，则在胡恩河口的群落中占据更为重要的地位。