Healthy thalli of the invasive seaweed Rugulopteryx okamurae (Phaeophyceae) being massively dragged into deep-sea bottoms by the Mediterranean Outflow Water

IF 1.5 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Phycologia Pub Date : 2023-03-04 DOI:10.1080/00318884.2023.2177057
Á. Mateo-Ramírez, Concepción Iñiguez, L. M. Fernández-Salas, R. Sánchez-Leal, C. Farias, M. J. Bellanco, J. Gil, J. Rueda
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引用次数: 5

Abstract

ABSTRACT The invasive seaweed Rugulopteryx okamurae has recently arrived in Europe from the western Pacific. Its explosive spread on coastal areas of the Gulf of Cádiz (GoC), Strait of Gibraltar and Alboran Sea is spoiling native coastal ecosystems and inflicting heavy losses on ecosystem services. We discovered for the first time large amounts (up to 17 g m–2) of detached R. okamurae thalli on deep-sea bottoms of the GoC that are being dragged from the Strait of Gibraltar shores into the NE Atlantic by the Mediterranean Outflow Water (MOW). Laboratory experiments revealed that collected unattached macroalgae from deep-sea locations were alive and healthy and maintained intact photosynthetic capacity after long dark periods, suggesting a tremendous resilience and invasive potential. Given the rapid transport of healthy thalli by the MOW and massive accumulation of them in the GoC basin, R. okamurae could represent a major threat to NE Atlantic ecosystems, affecting not only coastal but also deep-sea habitats.
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被地中海流出水大量拖入深海底部的入侵海苔(褐藻科)的健康菌体
摘要入侵海藻冈村鲁氏鸟(Rugulopteryx okamura)最近从西太平洋抵达欧洲。它在Cádiz湾(GoC)、直布罗陀海峡和阿尔博兰海沿海地区的爆炸性蔓延正在破坏当地沿海生态系统,并对生态系统服务造成严重损失。我们首次在GoC深海底部发现了大量(高达17 g m-2)分离的冈村氏梭菌,它们被地中海流出水(MOW)从直布罗陀海峡海岸拖到大西洋东北部。实验室实验表明,从深海采集的独立大藻在长时间的黑暗期后仍然健康存活,并保持完整的光合能力,表明其具有巨大的恢复能力和入侵潜力。考虑到MOW对健康菌体的快速运输以及它们在GoC盆地的大量积累,okamurae可能对东北大西洋生态系统构成重大威胁,不仅影响沿海,还影响深海栖息地。
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来源期刊
Phycologia
Phycologia 生物-海洋与淡水生物学
CiteScore
3.10
自引率
18.80%
发文量
54
审稿时长
3 months
期刊介绍: Phycologia is published bimonthly by the International Phycological Society and serves as a publishing medium for information about any aspect of phycology. Membership in the Society is not necessary for publication. Submitted manuscripts cannot be previously published or submitted elsewhere. Copyright ownership of all accepted papers is held by the International Phycological Society.
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