Experimental Studies on the Ecology of Intertidal Environments at Heron Island. II. The Effect of Substratum
Experimental Studies on the Ecology of Intertidal Environments at Heron Island. II. The Effect of Substratum
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苍鹭岛潮间带环境生态学实验研究。
DOI：
10.1071/mf9610164
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发表时间：
1961
期刊：
影响因子：
--
通讯作者：
W. Stephenson
中科院分区：
文献类型：
--
作者：
W. Stephenson
不同种类的岩石被胶结到海滩岩石在苍鹭岛上的开放表面上，允许鱼类浏览，并在笼子里，以防止it.During一个12个月的时间内，可以忽略不计的潮间带动物殖民这些岩石，其稀疏周围的海滩岩石显然不是由于底层效应本身。注意到基质对植物群的轻微影响。在较硬的岩石上，褐色的海藻Ralfsia是一种引人注目的新生物，而绿色海藻在石灰质的底层上发育得最好。鱼类浏览的强度呈负相关的岩石表面的硬度，但效果的结论是一个间接的，硬度影响的厚度的藻类覆盖，这反过来又影响浏览强度。7年前放置在海滩上的硬混凝土明显高于一般表面，并且（在做出某些假设后）似乎岩石被鱼类啃食至每年约0.5 mm的厚度。在初步实验中，橡子藤壶从礁顶移植到海滩岩石，并观察到较高的存活率在笼子里的标本。
Different kinds of rocks were cemented to the beach rock at Heron Island both upon the open surface to permit fish browsing, and within cages to prevent it. During a 12-month period, a negligible number of intertidal animals colonized these rocks, and their sparsity upon the surrounding beach rock is evidently not due to a substratum effect per se. Minor effects of the substratum on the flora were noted. On the harder rocks the brown alga, Ralfsia, was a conspicuous newcomer, while green algae were best developed on the calcareous substrata. The intensity of fish browsing was inversely related to the hardness of the rock surface, but the effect was concluded to be an indirect one, hardness affecting the thickness of the algal cover, and this, in turn, affecting the browsing intensity. Hard concrete placed upon the beach 7 years previously was appreciably higher than the general surface, and (after making certain assumptions) it appears that rock is removed by fish browsing to a thickness of about 0.5 mm per year. In a preliminary experiment acorn barnacles were transplanted from the reef crest to the beach rock, and a higher survival rate was observed on caged specimens.