Historical effects of periodic trampling on the cover of Hormosira banksii

This study examines the effects of experimental trampling on Hormosira banksii dominated rocky intertidal platforms within the Point Nepean National Park, Victoria between 1991 and 1996. This dataset gives the percent cover of the brown algae Hormosira banskii in response to different intensities and histories of experimental trampling. Percent cover of Hormosira banksii was assessed on three occasions: end of summer 1994-1995, pre-summer 1995-1996, end of summer 1995-1996. A comparison of areas of shoreline that had been trampled for two and four summers did not appear to influence the response to a new trampling episode. However, it was recognised that a mild summer experience during the trial may have reduced the potential impact of trampling, weakening the capacity to detect historical effects.本研究于1991年至1996年间，针对澳大利亚维多利亚州内皮恩角国家公园内以波状石皮藻（Hormosira banksii）为优势物种的潮间带岩滩平台，探究了实验性踩踏对其产生的影响。本数据集记录了该褐藻波状石皮藻的盖度百分比数据，以反映其对不同踩踏强度及历史踩踏事件的响应情况。研究共设置三个采样节点以测定波状石皮藻的盖度百分比：1994-1995年夏末、1995-1996年夏前、1995-1996年夏末。对比经2个夏季与4个夏季踩踏的岸线区域后发现，此前的踩踏历史并未对新踩踏事件下的生物响应产生显著影响。但研究同时指出，试验期间的温和夏季气候可能降低了踩踏事件的潜在影响，进而削弱了对历史踩踏效应的检测能力。