Home sweet home: Comparison of epibiont assemblages associated with cultivated and wild sugar kelp (Saccharina latissima), co-cultivated blue mussels (Mytilus edulis) and farm infrastructure
Home sweet home: Comparison of epibiont assemblages associated with cultivated and wild sugar kelp (Saccharina latissima), co-cultivated blue mussels (Mytilus edulis) and farm infrastructure
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甜蜜之家：与栽培和野生糖海带（Saccharina latissima）、共培养蓝贻贝（Mytilus edulis）和农场基础设施相关的表生物组合的比较
DOI：
10.1007/s10811-023-03055-3
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发表时间：
2023
影响因子：
3.3
通讯作者：
Corrigan S
中科院分区：
文献类型：
--
作者：
Corrigan S
海藻养殖正在欧洲扩大，可能提供类似于天然海带森林和贝类养殖场的环境效益，包括提供栖息地。然而，很少有研究证实这些说法，而且目前还不确定海藻养殖场是否会支持与海带森林类似的生物多样性，或者在收获季节之后提供有价值的长期栖息地。我们反复调查了英国西南部的一个综合糖海带 (Saccharina latissima) 和蓝贻贝 (Mytilus edulis) 养殖场，以比较栽培海带、附近三个野生海带种群的表观生物组合，以及养殖贻贝品系和未播种“裸”品系的表生物组合。我们发现，在收获季节，养殖海带所支持的表生物丰度是野生海带上的表生物丰度的 217 倍以上，但是，农场中每种海带的分类多样性较低。养殖海带组合以片脚类动物为主，野生海带上也有这种动物，但数量要少得多。养殖海带还支持与养殖贻贝的不同组合，后者同样以片足类动物为主，但螃蟹、棘皮动物、蠕虫和红藻生物量的相对丰度较高。裸露的株系被另一种假海带（Saccorhiza polyschides）大量定植，它支持与种子相似的表生物组合。纬度。我们的研究结果表明，与海藻一起养殖双壳类可以增加海藻养殖场的栖息地供应，并将其持久性延长到典型的海藻养殖期之外，因为双壳类的养殖期更长、连续。然而，贻贝的存在可能会影响养殖海带上的表生物组合，这与野生海带种群不同。
Seaweed farming is expanding in Europe and may provide environmental benefits similar to those from natural kelp forests and shellfish farms, including habitat provisioning. Few studies have substantiated these claims however, and it remains uncertain whether seaweed farms will support similar biodiversity to kelp forests or provide valuable long-term habitat beyond the harvest season. We repeatedly surveyed an integrated sugar kelp (Saccharina latissima) and blue mussel (Mytilus edulis) farm in southwest UK to compare epibiont assemblages between cultivated kelps, to those from three nearby wild kelp populations, and to epibionts on farmed mussel lines and unseeded ‘bare’ lines. We found farmed kelps supported over 217 times the abundance of epibionts living on wild kelps at harvest time, however, taxonomic diversity per kelp was lower at the farm. Farmed kelp assemblages were dominated by amphipods, which were present on the wild kelps but in much lower numbers. Farmed kelp also supported distinct assemblages to cultivated mussels, which were similarly dominated by amphipods, but hosted higher relative abundances of crabs, echinoderms, worms and red algal biomass. The bare lines were heavily colonised by another pseudo-kelp,Saccorhiza polyschides, which supported similar epibiont assemblages to the seededS. latissimalines. Our findings indicate that cultivating bivalves alongside seaweed can increase habitat provisioning at a seaweed farm and extend its permanence beyond typical seaweed cultivation periods as bivalves have longer, continuous farming periods. However, the presence of mussels will likely influence the epibiont assemblages on the farmed kelp, which are distinct from wild kelp populations.
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