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Impacts of the non-indigenous seaweed Rugulopteryx okamurae on a Mediterranean coralligenous community (Strait of Gibraltar): The role of long-term monitoring
Ecological Indicators ( IF 6.9 ) Pub Date : 2020-11-05 , DOI: 10.1016/j.ecolind.2020.107135
Juan Sempere-Valverde , Enrique Ostalé-Valriberas , Manuel Maestre , Roi González Aranda , Hocein Bazairi , Free Espinosa

The Mediterranean is one of the most biodiverse and anthropogenically impacted seas and the coralligenous is one of its most diverse habitats. Its presence is indicative of well-preserved areas and its associated species are considered among the best bioindicators for monitoring nearshore rocky habitats. This study aims to report the temporal fluctuations of the coralligenous community in the marine protected area of Jbel Moussa (Strait of Gibraltar) in a period concomitant with the rapid expansion of the non-indigenous species Rugulopteryx okamurae (E.Y.Dawson) I.K.Hwang, W.J.Lee & H.S.Kim in the area. From year 2015 to 2019, an area covering 36 m2 of the coralligenous habitat was monitored across three sites, including temperature logs from 2017 to 2019. After its first record in the area in 2017, R. okamurae became the most abundant species in only one year, followed by a change in the coralligenous community structure and a regression of the bioindicator species Paramuricea clavata (Risso, 1826) and Mesophyllum expansum (Philippi) Cabioch & M.L.Mendoza. These species are sensitive to increases in water temperature and were already under a gradual regression due to anthropogenic disturbances and previous biological invasions, all of which could have reduced niche competition in the area and favoured the impacts caused by R. okamurae in the area. Results highlight the need of a rapid administrative response to increase mitigation efforts on this protected habitat. Due the potential expansion of this non-indigenous invasive species to the Mediterranean Sea, the present study could provide valuable information for future monitoring, conservation and management actions.



中文翻译:

非本地海藻Rugulopteryx okamurae对地中海珊瑚群落(直布罗陀海峡)的影响:长期监测的作用

地中海是生物多样性和人为影响最深的海洋之一,而珊瑚质是其最多样化的栖息地之一。它的存在表明了保存完好的地区,其相关物种被认为是监测近岸岩石生境的最佳生物指标之一。这项研究的目的是报告与非本土物种Rugulopteryx okamurae(EYDawson)IKHwang,WJLee和HSKim在2000年迅速扩张有关的时期,Jbel Moussa(直布罗陀海峡)海洋保护区珊瑚群落的时间波动。该地区。从2015年到2019年,面积为36 m 2在三个地点对珊瑚生境的栖息地进行了监测,包括2017年至2019年的温度记录。在2017年首次记录该地区之后,冈村R.成为仅一年内最丰富的物种,随后珊瑚生境结构发生了变化以及生物指示物物种Paramuricea clavata(Risso,1826)和Mesophyllum expansum(Philippi)Cabioch&MLMendoza的回归。这些物种对水温升高很敏感,并且由于人为干扰和先前的生物入侵而已经处于逐渐消退的状态,所有这些物种都可能减少该地区的生态位竞争,并有利于冈村鼠疫R. okamurae)造成的影响在那地区。结果突出表明,需要快速的行政对策,以增加对该受保护栖息地的缓解工作。由于这种非本地入侵物种可能扩展到地中海,本研究可为今后的监测,保护和管理行动提供有价值的信息。

更新日期:2020-11-06
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