Investigation of School and Gummy Shark Nursery Areas in South East Tasmania and South East Australia

School shark pupping areas in inshore waters of Tasmania and Victoria identified by Olsen in the 1940s and 1950s were re-sampled using gillnets & longlines from 1991-97. Current catch rates are much lower at all sites and pups are apparently no longer present at some sites. Additional sampling of mainly inshore embayments in Tasmania and Victoria failed to locate significant new pupping grounds of school shark. Limited sampling in South Australia and Western Australia failed to catch school shark pups. Relatively few gummy shark pups were caught anywhere in this study; no significant pupping grounds were located and pupping appears to take place over scattered locations in inshore waters. Catch data includes a wide variety of sharks, rays and teleosts species, the most numerous being: Squalus megalops, Platycephalus bassensis, Squalus acanthias, Pseudophycis bachus, Aldrichetta forsteri, Mustelus antarticus, Callorhynchus milii, Galeorhinus galeus, Tracurus declivis, Cephaloscyllium laticeps, Neosebastes scorpaenoides, Platycephalus richardsoni, and Sillago bassensis. The fish catch data was taken from school shark nursery areas in Tasmania and Victoria, this study is split into 2 portions, first a 12 month study (91-92), followed by a multi-year study (92-97).
Further documentation was added in March 2014, see below.

Olsen于1940年代至1950年代在塔斯马尼亚州与维多利亚州近岸水域划定的灰星鲨（school shark）产仔区，于1991至1997年间采用刺网（gillnets）与延绳钓（longlines）完成了重采样。所有采样位点的当前捕获率均大幅下降，且部分位点已无幼鲨分布。针对塔斯马尼亚州与维多利亚州近岸海湾开展的补充采样，未发现新的重要灰星鲨产仔场。在南澳大利亚州与西澳大利亚州开展的有限采样中，未捕获到灰星鲨幼鲨。本研究仅捕获到极少量的灰貂鲨（gummy shark）幼鲨，未发现显著的灰貂鲨产仔场，其产仔行为似乎发生在近岸水域的零散分布区域。
本次捕获数据涵盖多种鲨鱼、鳐类与硬骨鱼类物种，数量占比最高的物种包括：长吻角鲨（Squalus megalops）、巴氏扁鲹（Platycephalus bassensis）、白斑角鲨（Squalus acanthias）、新西兰红鳕（Pseudophycis bachus）、福氏银汉鱼（Aldrichetta forsteri）、澳洲灰貂鲨（Mustelus antarcticus）、新西兰叶吻银鲛（Callorhynchus milii）、真鲨（Galeorhinus galeus）、智利竹荚鱼（Tracurus declivis）、宽纹猫鲨（Cephaloscyllium laticeps）、红鳍拟鲉（Neosebastes scorpaenoides）、理查森扁鲹（Platycephalus richardsoni）以及巴氏银鲈（Sillago bassensis）。鱼类捕获数据采集自塔斯马尼亚州与维多利亚州的灰星鲨幼育场，本研究分为两个阶段：第一阶段为为期12个月的研究（1991-1992年），第二阶段为多年期研究（1992-1997年）。
本数据集于2014年3月补充了额外文档，详见下文。