Effects of periodic trampling on the percentage cover of understory algae within Hormosira banksii dominated rocky intertidal communities

This study assesses the effects of trampling on Hormosira banksii dominated rocky intertidal algal beds within Point Nepean National Park, Victoria, over six summers between 1991 and 1996. This dataset gives the percent cover of understory algae within beds of Hormosira banksii after exposure to four levels of trampling for 3 and 5 years. Sites were located at Cheviot Beach (Harry's pool, Cheviot mid) or Grenade Range, ~ 1 km apart. Percent cover of understory algae was sampled in the Autumn of 1993 and 1995, after 3 and 5 years of trampling, respectively. Trampling reduced the abundance of articulated coralline algae at the Grenade Range site but not at either of the two Cheviot Beach sites.

本研究于1991至1996年的六个夏季期间，评估了踩踏对澳大利亚维多利亚州内皮恩角国家公园（Point Nepean National Park）内以Hormosira banksii（Hormosira banksii）为优势种的潮间带岩礁藻床的影响。本数据集记录了经4种踩踏强度处理3年和5年后，该藻床内底层藻类（understory algae）的盖度百分比。采样点位分别设置于切维奥特海滩（Cheviot Beach，包含Harry's pool、Cheviot mid两个子点位）与格拉纳德岭（Grenade Range），两处点位间距约1公里。研究分别在踩踏处理满3年的1993年秋季，以及满5年的1995年秋季，对底层藻类的盖度百分比进行采样。结果显示，踩踏降低了格拉纳德岭点位的节石珊瑚藻（articulated coralline algae）丰度，但对切维奥特海滩的两处采样点位均无此效应。