气候变化领域集成服务门户(CCPortal): Ecomorphodynamics of oyster reefs and their influence on oyster reef morphology

CCPortal

DOI	10.1016/j.geomorph.2024.109213
	Ecomorphodynamics of oyster reefs and their influence on oyster reef morphology
	Roncolato, Francesca; Fellowes, Thomas E.; Duce, Stephanie; Mora, Carolina; Johansson, Oskar; Strachan, Indiana; Bugnot, Ana B.; Erickson, Katherine; Figueira, Will; Gribben, Paul E.; Pine, Christopher; Morgan, Bree; Vila-Concejo, Ana
发表日期	2024
ISSN	0169-555X
EISSN	1872-695X
起始页码	456
卷号	456
英文摘要	Over 85 % of oyster reefs have been lost globally due to disease, overharvesting, global warming, and pollution. Consideration of the ecosystem services provided by healthy oyster reefs (e.g., coastal protection, water purification and carbon burial) has driven recent research and restoration efforts worldwide. However, hydrodynamic studies, specifically looking at the effects of different levels of wave exposure on the ecomorphodynamics of oyster reefs, are scarce. In this study, we consider oyster reefs in microtidal estuaries under different levels of relative wave exposure to determine how hydrodynamics may shape reef morphology and how reef morphology affects wave dissipation. We quantify oyster reef morphology through spatial analysis, using morphometrics and spatial density and relate these to the ability of oyster reefs to dissipate wave energy. Field campaigns were undertaken at three microtidal sites in southeast Australia with different hydrodynamic exposure and morphology: Gamay (Botany Bay), Port Hacking and Crookhaven River. We found that reef morphology and orientation is related to estuarine hydrodynamic conditions and thus we propose an ecomorphodynamic model with a continuum of morphologies from sparse reefs aligned perpendicular to the tidal currents and incoming waves (patch reefs), through broken up barriers semi -aligned or obliquely to the tidal flows (string reefs), to the total barrier that exists under the lowest hydrodynamic conditions (fringing reefs). The highest dissipative ability of locally generated wind waves occurred at Crookhaven (patch reef, 165 kW/m 2 ), and lowest at Gamay (string reef, 11.66 kW/m 2 ). Our results suggest that reef morphology, and orientation to currents and waves, influence wave dissipation, and that hydrodynamic conditions in turn influence reef morphology. These findings are important to inform future reef restoration under increasingly severe climate change conditions to optimise ecosystem services on restored oyster reefs.
英文关键词	Wave dissipation; Wave exposure; Oyster reef morphology; Estuary; Gamay; Botany Bay; Port Hacking; Crookhaven
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001234982700001
来源期刊	GEOMORPHOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302580
作者单位	University of Sydney; University of Sydney; Sydney Institute of Marine Science; James Cook University; University of New South Wales Sydney; University of Sydney; Commonwealth Scientific & Industrial Research Organisation (CSIRO)
推荐引用方式 GB/T 7714	Roncolato, Francesca,Fellowes, Thomas E.,Duce, Stephanie,et al. Ecomorphodynamics of oyster reefs and their influence on oyster reef morphology[J],2024,456.
APA	Roncolato, Francesca.,Fellowes, Thomas E..,Duce, Stephanie.,Mora, Carolina.,Johansson, Oskar.,...&Vila-Concejo, Ana.(2024).Ecomorphodynamics of oyster reefs and their influence on oyster reef morphology.GEOMORPHOLOGY,456.
MLA	Roncolato, Francesca,et al."Ecomorphodynamics of oyster reefs and their influence on oyster reef morphology".GEOMORPHOLOGY 456(2024).