Condition of rocky reef communities around Tasmania: a key marine habitat

塔斯马尼亚周围岩礁群落的状况：重要的海洋栖息地

• 批准号: global : 29c481ab-e1b7-4eab-92df-3cfb20240255
• 金额: --
• 依托单位国家: 澳大利亚
• 财政年份: 2006
• 资助国家: 澳大利亚
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://researchdata.edu.au/condition-rocky-reef-marine-habitat/686266
• 关键词: Condition; rocky; reef; communities; around

The data is quantitative abundance of fish, megafaunal invertebrates and percent algal cover derived from underwater visual census methods involving transect counts at rocky reef sites around Tasmania. This dataset allows examination of changes in Tasmanian shallow reef faunal and floral communities over a decadal scale, with initial surveys conducted in 1992-1995, and again in 2006-2007. There are plans for ongoing surveys.<br /> <br /> An additional component was added in the latter study - a boat ramp study looking at the proximity of boat ramps and their effects of fishing. We analysed underwater visual census data on fishes and macroinvertebrates (abalone and rock lobsters) at 133 shallow rocky reef sites around Tasmania that ranged from 0.6 - 131 km from the nearest boat ramp. These sites were not all the same as those used for the comparison of 1994 and 2006 reef communities. The subset of 133 sites examined in this component consisted of only those sites that were characterized by the two major algal (kelp) types (laminarian or fucoid dominated). Sites with atypical algal assemblages were omitted from the 196 sites surveyed in 2006. <br /> <br /> This study aimed to examine reef community data for changes at the community level, changes in species richness and introduced species populations, and changes that may have resulted from ocean warming and fishing.<br /> <br /> The methods are described in detail in Edgar and Barrett (1997). Primarily the data are derived from transects at 5 m depth and/or 10 m depth at each site surveyed. The underwater visual census (UVC) methodology used to survey rocky reef communities was designed to maximise detection of (i) changes in population numbers and size-structure (ii) cascading ecosystem effects associated with disturbances such as fishing, (iii) long term change and variability in reef assemblages.

这些数据是鱼类、巨型无脊椎动物的数量丰度和藻类覆盖的百分比，这些数据来自于水下视觉普查方法，包括在塔斯马尼亚岛周围的岩石礁点进行样带计数。该数据集允许对塔斯马尼亚浅海礁动物和植物群落在十年尺度上的变化进行检查，初步调查于1992-1995年进行，并于2006-2007年再次进行。正在进行的调查计划。< br / >