Tim Felix Hartmann , Inês Ribeiro , Duarte Duarte , Sofia Gamito
{"title":"富尔摩沙沿岸泻湖海胆斑块在增生蕨和玉村鹭入侵压力下的变化","authors":"Tim Felix Hartmann , Inês Ribeiro , Duarte Duarte , Sofia Gamito","doi":"10.1016/j.ecss.2025.109449","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates specific epibenthic community in sea urchin patches from Ria Formosa lagoon, near the Armona Inlet in southern Portugal. These patches are concentrated in distinct spatially isolated areas surrounded by unvegetated, bare sediment bottom and support diverse organisms, dominated by a high density and biomass of <em>Paracentrotus lividus</em> and ascidians. Field surveys conducted between 2014 and 2023 revealed a shift in flora composition, with the replacement of native seagrasses and seaweed by the invasive macroalgae <em>Caulerpa prolifera.</em> The main aim of this study was to evaluate the effects of this invasive alga in the epibenthic communities of the patches. However, in 2024 surveys, another invasive macroalgae, <em>Rugulopteryx okamurae,</em> was detected in the patches. <em>Sphaerechinus granularis</em> was the dominant sea urchin species in biomass, in <em>R. okamurae</em> patches. In the patches invaded by <em>Caulerpa prolifera</em>, sea urchins were generally absent, as were ascidians’ species. Faunal analyses indicate a significant decline in macroinvertebrate taxa richness, abundance and biomass within <em>Caulerpa</em>-invaded patches, when compared with patches invaded by <em>R. okamurae</em>. Non-metric multidimensional scaling, confirm the observed differences between the two invaded patches. The invasion by <em>R. okamurae</em> complicates the ecological balance, potentially leading to species replacement and eventual biodiversity loss. Additionally, the disappearance of shell layers in these patches, observed in previous years, raises concerns about habitat stability and resilience. The findings highlight the urgent need for continuous monitoring and management strategies to mitigate the ecological consequences of macroalgal invasions in the Ria Formosa.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"324 ","pages":"Article 109449"},"PeriodicalIF":2.6000,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sea urchins’ patches in Ria Formosa coastal lagoon altered under invasion pressure of Caulerpa prolifera and Rugulopteryx okamurae\",\"authors\":\"Tim Felix Hartmann , Inês Ribeiro , Duarte Duarte , Sofia Gamito\",\"doi\":\"10.1016/j.ecss.2025.109449\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates specific epibenthic community in sea urchin patches from Ria Formosa lagoon, near the Armona Inlet in southern Portugal. These patches are concentrated in distinct spatially isolated areas surrounded by unvegetated, bare sediment bottom and support diverse organisms, dominated by a high density and biomass of <em>Paracentrotus lividus</em> and ascidians. Field surveys conducted between 2014 and 2023 revealed a shift in flora composition, with the replacement of native seagrasses and seaweed by the invasive macroalgae <em>Caulerpa prolifera.</em> The main aim of this study was to evaluate the effects of this invasive alga in the epibenthic communities of the patches. However, in 2024 surveys, another invasive macroalgae, <em>Rugulopteryx okamurae,</em> was detected in the patches. <em>Sphaerechinus granularis</em> was the dominant sea urchin species in biomass, in <em>R. okamurae</em> patches. In the patches invaded by <em>Caulerpa prolifera</em>, sea urchins were generally absent, as were ascidians’ species. Faunal analyses indicate a significant decline in macroinvertebrate taxa richness, abundance and biomass within <em>Caulerpa</em>-invaded patches, when compared with patches invaded by <em>R. okamurae</em>. Non-metric multidimensional scaling, confirm the observed differences between the two invaded patches. The invasion by <em>R. okamurae</em> complicates the ecological balance, potentially leading to species replacement and eventual biodiversity loss. Additionally, the disappearance of shell layers in these patches, observed in previous years, raises concerns about habitat stability and resilience. The findings highlight the urgent need for continuous monitoring and management strategies to mitigate the ecological consequences of macroalgal invasions in the Ria Formosa.</div></div>\",\"PeriodicalId\":50497,\"journal\":{\"name\":\"Estuarine Coastal and Shelf Science\",\"volume\":\"324 \",\"pages\":\"Article 109449\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-08-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Estuarine Coastal and Shelf Science\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0272771425003270\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MARINE & FRESHWATER BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Estuarine Coastal and Shelf Science","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272771425003270","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
Sea urchins’ patches in Ria Formosa coastal lagoon altered under invasion pressure of Caulerpa prolifera and Rugulopteryx okamurae
This study investigates specific epibenthic community in sea urchin patches from Ria Formosa lagoon, near the Armona Inlet in southern Portugal. These patches are concentrated in distinct spatially isolated areas surrounded by unvegetated, bare sediment bottom and support diverse organisms, dominated by a high density and biomass of Paracentrotus lividus and ascidians. Field surveys conducted between 2014 and 2023 revealed a shift in flora composition, with the replacement of native seagrasses and seaweed by the invasive macroalgae Caulerpa prolifera. The main aim of this study was to evaluate the effects of this invasive alga in the epibenthic communities of the patches. However, in 2024 surveys, another invasive macroalgae, Rugulopteryx okamurae, was detected in the patches. Sphaerechinus granularis was the dominant sea urchin species in biomass, in R. okamurae patches. In the patches invaded by Caulerpa prolifera, sea urchins were generally absent, as were ascidians’ species. Faunal analyses indicate a significant decline in macroinvertebrate taxa richness, abundance and biomass within Caulerpa-invaded patches, when compared with patches invaded by R. okamurae. Non-metric multidimensional scaling, confirm the observed differences between the two invaded patches. The invasion by R. okamurae complicates the ecological balance, potentially leading to species replacement and eventual biodiversity loss. Additionally, the disappearance of shell layers in these patches, observed in previous years, raises concerns about habitat stability and resilience. The findings highlight the urgent need for continuous monitoring and management strategies to mitigate the ecological consequences of macroalgal invasions in the Ria Formosa.
期刊介绍:
Estuarine, Coastal and Shelf Science is an international multidisciplinary journal devoted to the analysis of saline water phenomena ranging from the outer edge of the continental shelf to the upper limits of the tidal zone. The journal provides a unique forum, unifying the multidisciplinary approaches to the study of the oceanography of estuaries, coastal zones, and continental shelf seas. It features original research papers, review papers and short communications treating such disciplines as zoology, botany, geology, sedimentology, physical oceanography.