气候变化领域集成服务门户(CCPortal): Mangrove diversity loss under sea-level rise triggered by bio-morphodynamic feedbacks and anthropogenic pressures

CCPortal

DOI	10.1088/1748-9326/abc122
	Mangrove diversity loss under sea-level rise triggered by bio-morphodynamic feedbacks and anthropogenic pressures
	Xie D.; Schwarz C.; Brückner M.Z.M.; Kleinhans M.G.; Urrego D.H.; Zhou Z.; van Maanen B.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Mangrove forests are valuable ecosystems, but their extent and diversity are increasingly threatened by sea-level rise and anthropogenic pressures. Here we develop a bio-morphodynamic model that captures the interaction between multiple mangrove species and hydro-sedimentary processes across a dynamic coastal profile. Numerical experiments are conducted to elucidate the response of mangrove assemblages under a range of sea-level rise and sediment supply conditions, both in the absence and presence of anthropogenic barriers impeding inland migration. We find that mangrove coverage can increase despite sea-level rise if sediment supply is sufficient and landward accommodation space is available. Tidal barriers are mainly detrimental to mangrove coverage and result in species loss. Importantly, we show that bio-morphodynamic feedbacks can cause spatio-temporal variations in sediment delivery across the forest, leading to upper-forest sediment starvation and reduced deposition despite extended inundation. As such, bio-morphodynamic feedbacks can decouple accretion rates from inundation time, altering mangrove habitat conditions and causing mangrove diversity loss even when total forest coverage remains constant or is increasing. A further examination of bio-morphodynamic feedback strength reveals that vegetation-induced flow resistance linked to mangrove root density is a major factor steering the inundation-accretion decoupling and as such species distribution. Our findings have important implications for ecosystem vulnerability assessments, which should account for the interactions between bio-morphodynamics and mangrove diversity when evaluating the impacts of sea-level rise on species assemblages. © 2020 The Author(s). Published by IOP Publishing Ltd
英文关键词	Anthropogenic interventions; Bio-morphodynamic feedbacks; Mangrove assemblages; Numerical modelling; Sea-level rise; Species diversity
语种	英语
scopus关键词	Ecosystems; Floods; Forestry; Sediments; Accommodation space; Anthropogenic pressures; Morphodynamic modeling; Numerical experiments; Sedimentary process; Spatio-temporal variation; Species distributions; Vulnerability assessments; Sea level; ecosystem approach; geographical distribution; mangrove; morphodynamics; numerical model; sea level change; species diversity; vulnerability
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153492
作者单位	Faculty of Geosciences, Utrecht University, Utrecht, Netherlands; College of Earth, Ocean, and Environment, University of Delaware, Lewes, DE, United States; College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing, China
推荐引用方式 GB/T 7714	Xie D.,Schwarz C.,Brückner M.Z.M.,et al. Mangrove diversity loss under sea-level rise triggered by bio-morphodynamic feedbacks and anthropogenic pressures[J],2020,15(11).
APA	Xie D..,Schwarz C..,Brückner M.Z.M..,Kleinhans M.G..,Urrego D.H..,...&van Maanen B..(2020).Mangrove diversity loss under sea-level rise triggered by bio-morphodynamic feedbacks and anthropogenic pressures.Environmental Research Letters,15(11).
MLA	Xie D.,et al."Mangrove diversity loss under sea-level rise triggered by bio-morphodynamic feedbacks and anthropogenic pressures".Environmental Research Letters 15.11(2020).