Multiple-scale interactions structure macroinvertebrate assemblages associated with kelp understory algae
Multiple-scale interactions structure macroinvertebrate assemblages associated with kelp understory algae
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DOI：
10.1111/ddi.13140
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发表时间：
2020-07-28
影响因子：
4.6
通讯作者：
Moore, Pippa J.
中科院分区：
文献类型：
--
作者：
Bue, Mathilde;Smale, Dan A.;Moore, Pippa J.
海带森林提供栖息地和食物，支持高度多样性的植物群和动物群。虽然许多研究已经描述了大型无脊椎动物与海带叶片，柄和holdfasts，一个关键的海带森林微生境，石生林下藻类，仍然缺乏研究。在这里，我们使用了宏观生态学的方法和人工海藻单位（ASU），探讨海洋气候，波浪暴露和栖息地的复杂性对林下藻类相关的大型无脊椎动物组合withinLaminaria hyperboreforests在英国的影响。位置沿联合王国北部和西部海岸沿着纬度梯度9度。方法在matureL下部署由4种不同生境复杂性组成的重复ASU。Hyperboreaat 2个站点（沿着波浪暴露梯度，以km为间隔），位于嵌套在两个区域（温暖和寒冷，跨越9个纬度）内的4个位置（以100 km为间隔）中的每个位置内。5个月后，在现场，ASU收集和大型无脊椎动物进行了鉴定，物种水平和计数。结果栖息地复杂性和波浪暴露都影响大型底栖动物组合结构，但结果也显示出明显的海洋气候的影响，与大型底栖动物组合之间的温暖和凉爽的地区，主要是由较高的多样性和均匀性在温暖的地区和更大的丰度在较冷的地区。主要结论预测变暖和转向不太复杂的草坪形成藻类组合可能会改变与林下藻类的大型无脊椎动物组合的结构，海带森林食物网动态的潜在影响。
Aim Kelp forests provide habitat and food that supports a high diversity of flora and fauna. While numerous studies have described macroinvertebrates associated with kelp blades, stipes and holdfasts, a key kelp forest microhabitat, epilithic understory algae, remains poorly studied. Here, we used a macroecological approach and artificial seaweed units (ASUs) to explore the effects of ocean climate, wave exposure and habitat complexity on understory algal associated macroinvertebrate assemblages withinLaminaria hyperboreaforests in the United Kingdom. Location 9 degrees latitudinal gradient along the north and west coasts of the United Kingdom. Methods Replicate ASUs comprising four different habitat complexities were deployed under matureL. hyperboreaat 2 sites (along a wave exposure gradient, separated by km) within each of 4 locations (separated by 100s km) nested within two regions (warm and cold, spanning 9 degrees of latitude). After 5 months in situ, the ASUs were collected and macroinvertebrates were identified to species level and enumerated. Results Habitat complexity and wave exposure both influenced macroinvertebrate assemblage structure, but results also showed clear effects of ocean climate, with macroinvertebrate assemblages differing between warm and cool regions, primarily driven by higher diversity and evenness in the warmer region and greater abundance in the cooler region. Main conclusions Predicted warming and a shift to less complex turf-forming algal assemblages are likely to alter the structure of macroinvertebrate assemblages associated with understory algae, with potential implications for kelp forest food web dynamics.