Potential novel habitat created by holdfasts from cultivated Laminaria digitata: assessing the macroinvertebrate assemblages
Potential novel habitat created by holdfasts from cultivated Laminaria digitata: assessing the macroinvertebrate assemblages
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由栽培指状昆布的固着物创造的潜在新栖息地：评估大型无脊椎动物群落
DOI：
10.3354/aei00170
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发表时间：
2016
影响因子：
2.2
通讯作者：
M. Edwards
中科院分区：
文献类型：
--
作者：
A. Walls;R. Kennedy;R. Fitzgerald;A. Blight;Mark P. Johnson;M. Edwards
在欧洲，对本地海带品种的养殖兴趣正在增加。对海藻养殖场的观察表明，它们可能是相关物种的栖息地，可能会改变当地的丰富程度。以前的研究一般集中在与野生海带相关的物种上，表明固着物的物种相对丰富。然而，对与栽培海带有关的物种进行的研究却很少.养殖海带固着器所创造的生境可能作为一种新的生境，而不仅仅是现有海带生境的扩展，这是由于固着器年龄、固着器形态和固着器在水柱中的位置的差异。海带digitata从西部的爱尔兰进行了检查，以测试这些差异是否导致动物的养殖（悬浮）holdfasts是不同的野生（底栖）的立场。为了将结果放在更广泛的背景下，模式进行了比较，从东北大西洋的可比研究中观察到的holdfastrichness关系。总丰度holdfast表栖动物是类似的底栖和悬浮holdfasts从西部的爱尔兰，虽然物种丰富度较高的悬浮样品。丰富和丰富的悬浮海带holdfasts与其他野生海带研究中记录的值的范围是一致的。不同固着类型的组合组成差异显著（ANOSIM; R = 0.383，p < 0.05）。区系摄食类型的分布没有，但是，悬浮和底栖海带之间的变化。悬浮holdfasts在西部的爱尔兰代表了一种新的栖息地，具有较高的物种丰富度和不同的物种组合相比，邻近的底栖海带。
Interest in the cultivation of native kelp species is increasing within Europe. Obser- vations of seaweed farms suggest that they may act as a habitat for associated species, potentially altering the richness of the local area. Previous studies have generally focused on species associ- ated with wild kelps, showing the holdfast to be relatively species-rich. Little research has, how- ever, been conducted on the species associated with cultivated kelps. The habitat created by cul- tivated kelp holdfasts may act as a novel habitat and not simply an expansion of existing kelp habitat, due to differences in holdfast age, holdfast morphology and holdfast position in the water column. Laminaria digitata from the west of Ireland were examined to test if these differences result in the fauna of cultivated (suspended) holdfasts being distinct from wild (benthic) stands. To place the results in a broader context, patterns were compared to holdfastrichness relationships observed in comparable studies from the NE Atlantic. Total abundance of holdfast epifauna was similar across benthic and suspended holdfasts from the west of Ireland, although species richness was higher in suspended samples. Richness and abundance in suspended kelp holdfasts were consistent with the range of values recorded in other wild kelp studies. There were significant dif- ferences in assemblage composition between holdfast types (ANOSIM; R = 0.383, p < 0.05). The distributions of faunal feeding types did not, however, vary between suspended and benthic kelps. Suspended holdfasts in the west of Ireland represented a novel habitat with higher species richness and a different species assemblage when compared to adjacent benthic kelps.