Michael S. Ross, Susana L. Stoffella, Pablo L. Ruiz, Suresh C. Subedi, John F. Meeder, Jay P. Sah, Rosario Vidales, Peter R. Minchin, Leonard J. Scinto, Keqi Zhang
{"title":"热带沿海湿地的瞬时植被动态：海平面上升、糖叶植物退缩和植物多样性的初步丧失","authors":"Michael S. Ross, Susana L. Stoffella, Pablo L. Ruiz, Suresh C. Subedi, John F. Meeder, Jay P. Sah, Rosario Vidales, Peter R. Minchin, Leonard J. Scinto, Keqi Zhang","doi":"10.1111/jvs.13267","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Aim and Questions</h3>\n \n <p>Sea-level rise has been responsible for extensive vegetation changes in coastal areas worldwide. The intent of our study was to analyze vegetation dynamics of a South Florida coastal watershed within an explicit spatiotemporal framework that might aid in projecting the landscape's future response to restoration efforts. We also asked whether recent transgression by mangroves and other halophytes has resulted in reduced plant diversity at local or subregional scales.</p>\n </section>\n \n <section>\n \n <h3> Location</h3>\n \n <p>Florida’'s Southeast Saline Everglades, USA.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>We selected 26 locations, representing a transition zone between sawgrass marsh and mangrove swamp, that was last sampled floristically in 1995. Within this transition zone, leading- and trailing-edge subzones were defined based on plant composition in 1995. Fifty-two site × time combinations were classified and then ordinated to examine vegetation–environment relationships using 2016 environmental data. We calculated alpha-diversity using Hill numbers or Shannon–Weiner index species equivalents and compared these across the two surveys. We used a multiplicative diversity partition to determine beta-diversity from landscape-scale (gamma) diversity in the entire dataset or in each subzone.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Mangrove and mangrove associates became more important in both subzones: through colonization and establishment in the leading edge, and through population growth combined with the decline of freshwater species in the trailing edge. Alpha-diversity increased significantly in the leading edge and decreased nominally in the trailing edge, while beta-diversity declined slightly in both subzones as well as across the study area.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>Recent halophyte encroachment in the Southeast Saline Everglades continues a trend evident for almost a century. While salinity is an important environmental driver, species’ responses suggest that restoration efforts based on supplementing freshwater delivery will not reverse a trend that depends on multiple interacting factors. Sea-level-rise-driven taxonomic homogenization in coastal wetland communities develops slowly, lagging niche-based changes in community structure and composition.</p>\n </section>\n </div>","PeriodicalId":49965,"journal":{"name":"Journal of Vegetation Science","volume":"35 3","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Transient vegetation dynamics in a tropical coastal wetland: Sea-level rise, glycophyte retreat, and incipient loss in plant diversity\",\"authors\":\"Michael S. Ross, Susana L. Stoffella, Pablo L. Ruiz, Suresh C. Subedi, John F. Meeder, Jay P. Sah, Rosario Vidales, Peter R. Minchin, Leonard J. Scinto, Keqi Zhang\",\"doi\":\"10.1111/jvs.13267\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Aim and Questions</h3>\\n \\n <p>Sea-level rise has been responsible for extensive vegetation changes in coastal areas worldwide. The intent of our study was to analyze vegetation dynamics of a South Florida coastal watershed within an explicit spatiotemporal framework that might aid in projecting the landscape's future response to restoration efforts. We also asked whether recent transgression by mangroves and other halophytes has resulted in reduced plant diversity at local or subregional scales.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Location</h3>\\n \\n <p>Florida’'s Southeast Saline Everglades, USA.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>We selected 26 locations, representing a transition zone between sawgrass marsh and mangrove swamp, that was last sampled floristically in 1995. Within this transition zone, leading- and trailing-edge subzones were defined based on plant composition in 1995. Fifty-two site × time combinations were classified and then ordinated to examine vegetation–environment relationships using 2016 environmental data. We calculated alpha-diversity using Hill numbers or Shannon–Weiner index species equivalents and compared these across the two surveys. We used a multiplicative diversity partition to determine beta-diversity from landscape-scale (gamma) diversity in the entire dataset or in each subzone.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>Mangrove and mangrove associates became more important in both subzones: through colonization and establishment in the leading edge, and through population growth combined with the decline of freshwater species in the trailing edge. Alpha-diversity increased significantly in the leading edge and decreased nominally in the trailing edge, while beta-diversity declined slightly in both subzones as well as across the study area.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Conclusions</h3>\\n \\n <p>Recent halophyte encroachment in the Southeast Saline Everglades continues a trend evident for almost a century. While salinity is an important environmental driver, species’ responses suggest that restoration efforts based on supplementing freshwater delivery will not reverse a trend that depends on multiple interacting factors. Sea-level-rise-driven taxonomic homogenization in coastal wetland communities develops slowly, lagging niche-based changes in community structure and composition.</p>\\n </section>\\n </div>\",\"PeriodicalId\":49965,\"journal\":{\"name\":\"Journal of Vegetation Science\",\"volume\":\"35 3\",\"pages\":\"\"},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-05-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Vegetation Science\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/jvs.13267\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Vegetation Science","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jvs.13267","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
Transient vegetation dynamics in a tropical coastal wetland: Sea-level rise, glycophyte retreat, and incipient loss in plant diversity
Aim and Questions
Sea-level rise has been responsible for extensive vegetation changes in coastal areas worldwide. The intent of our study was to analyze vegetation dynamics of a South Florida coastal watershed within an explicit spatiotemporal framework that might aid in projecting the landscape's future response to restoration efforts. We also asked whether recent transgression by mangroves and other halophytes has resulted in reduced plant diversity at local or subregional scales.
Location
Florida’'s Southeast Saline Everglades, USA.
Methods
We selected 26 locations, representing a transition zone between sawgrass marsh and mangrove swamp, that was last sampled floristically in 1995. Within this transition zone, leading- and trailing-edge subzones were defined based on plant composition in 1995. Fifty-two site × time combinations were classified and then ordinated to examine vegetation–environment relationships using 2016 environmental data. We calculated alpha-diversity using Hill numbers or Shannon–Weiner index species equivalents and compared these across the two surveys. We used a multiplicative diversity partition to determine beta-diversity from landscape-scale (gamma) diversity in the entire dataset or in each subzone.
Results
Mangrove and mangrove associates became more important in both subzones: through colonization and establishment in the leading edge, and through population growth combined with the decline of freshwater species in the trailing edge. Alpha-diversity increased significantly in the leading edge and decreased nominally in the trailing edge, while beta-diversity declined slightly in both subzones as well as across the study area.
Conclusions
Recent halophyte encroachment in the Southeast Saline Everglades continues a trend evident for almost a century. While salinity is an important environmental driver, species’ responses suggest that restoration efforts based on supplementing freshwater delivery will not reverse a trend that depends on multiple interacting factors. Sea-level-rise-driven taxonomic homogenization in coastal wetland communities develops slowly, lagging niche-based changes in community structure and composition.
期刊介绍：
The Journal of Vegetation Science publishes papers on all aspects of plant community ecology, with particular emphasis on papers that develop new concepts or methods, test theory, identify general patterns, or that are otherwise likely to interest a broad international readership. Papers may focus on any aspect of vegetation science, e.g. community structure (including community assembly and plant functional types), biodiversity (including species richness and composition), spatial patterns (including plant geography and landscape ecology), temporal changes (including demography, community dynamics and palaeoecology) and processes (including ecophysiology), provided the focus is on increasing our understanding of plant communities. The Journal publishes papers on the ecology of a single species only if it plays a key role in structuring plant communities. Papers that apply ecological concepts, theories and methods to the vegetation management, conservation and restoration, and papers on vegetation survey should be directed to our associate journal, Applied Vegetation Science journal.
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