气候变化领域集成服务门户(CCPortal): Shifting baselines in coastal forests: Rising seas transform plant communities from the ‘ground’ up

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DOI	10.1016/j.foreco.2019.117581
	Shifting baselines in coastal forests: Rising seas transform plant communities from the ‘ground’ up
	Ogurcak D.E.; Sah J.P.; Price R.M.; Ross M.S.
发表日期	2019
ISSN	0378-1127
卷号	453
英文摘要	Increases in the rate of sea level rise are likely to result in changes to disturbance-adapted coastal forests and associated freshwater resources over the next several decades. In this study, we investigated how the press disturbance of two decades of sea level rise altered island hydrology and interacted with pulse disturbances (frequent hurricane impacts) to alter coastal forest composition and structure. The research was conducted on two low-elevation islands located within the lower Florida Keys: Big Pine and Upper Sugarloaf Keys. Groundwater salinity and vegetation structure and composition were sampled in the early 1990s prior to impact from two hurricanes – Hurricanes Georges (1998) and Wilma (2005) – and again in 2012/2013 in permanent plots inside and outside the boundaries of the islands’ freshwater lenses. Using linear mixed effects modeling, we examined whether groundwater salinity varied over time among locations, and investigated whether this variation was reflected in changes in forest structure and composition in three height strata. The results of this analysis revealed that groundwater salinity underlying plots outside the freshwater lens increased over the two decades, while salinity of groundwater at plots inside the freshwater lens remained stable. The greatest shift in composition occurred in the understory strata along a gradient of increasing salinity, and plots located outside the freshwater lens gained species typical of tidally-influenced buttonwood forest and lost glycophytic species. Viewed against the background of recurring hurricane impacts, these findings suggest that sea level rise is currently altering both groundwater resources and the composition of coastal forests in the Florida Keys. Similar dynamics should be observed in low-lying coastal forests within ocean basins subject to increased tropical cyclone activity. Management of these island coastal forests must now consider the continually shifting nature of the resource in light of acceleration in sea level rise. © 2019 Elsevier B.V.
英文关键词	Coastal forest; Florida keys; Freshwater lens; Hurricane storm surge; Press disturbance; Pulse disturbance; Sea level rise
语种	英语
scopus关键词	Groundwater; Groundwater resources; Hurricanes; Presses (machine tools); Sea level; Storms; Structure (composition); Coastal forest; Florida keys; Freshwater lens; Hurricane storm surge; Pulse disturbance; Sea level rise; Forestry; coastal zone; community structure; coniferous tree; environmental disturbance; forest ecosystem; freshwater input; hurricane; island state; plant community; salinity; sea level change; storm surge; understory; vegetation structure; Florida; Forestry; Forests; Hydrology; Islands; Pinus; Resources; Salinity; Florida Keys; Florida [United States]; United States
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155734
作者单位	Department of Earth and Environment, Florida International University, 11200 SW 8th Street, Miami, FL 33199, United States; Southeast Environmental Research Center, Florida International University, 11200 SW 8th Street, Miami, FL 33199, United States
推荐引用方式 GB/T 7714	Ogurcak D.E.,Sah J.P.,Price R.M.,等. Shifting baselines in coastal forests: Rising seas transform plant communities from the ‘ground’ up[J],2019,453.
APA	Ogurcak D.E.,Sah J.P.,Price R.M.,&Ross M.S..(2019).Shifting baselines in coastal forests: Rising seas transform plant communities from the ‘ground’ up.Forest Ecology and Management,453.
MLA	Ogurcak D.E.,et al."Shifting baselines in coastal forests: Rising seas transform plant communities from the ‘ground’ up".Forest Ecology and Management 453(2019).