Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary

Abstract Rapid global degradation of coastal habitats can be attributed to anthropogenic activities associated with coastal development, aquaculture, and recreational surface water use. Restoration of degraded habitats has proven challenging and costly, and there is a clear need to develop novel app...

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Autores principales:	Sarah E. Donaher, Christopher J. Baillie, Carter S. Smith, Y. Stacy Zhang, Anna Albright, Stacy N. Trackenberg, Emory H. Wellman, Nina Woodard, Rachel K. Gittman
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	bivalve coastal restoration disturbance facilitation propeller scar seagrass Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/8b48e57d067d4a28815cc716d5af4d69
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spelling	oai:doaj.org-article:8b48e57d067d4a28815cc716d5af4d692021-11-29T07:06:42ZBivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary2150-892510.1002/ecs2.3804https://doaj.org/article/8b48e57d067d4a28815cc716d5af4d692021-11-01T00:00:00Zhttps://doi.org/10.1002/ecs2.3804https://doaj.org/toc/2150-8925Abstract Rapid global degradation of coastal habitats can be attributed to anthropogenic activities associated with coastal development, aquaculture, and recreational surface water use. Restoration of degraded habitats has proven challenging and costly, and there is a clear need to develop novel approaches that promote resilience to human‐caused disturbances. Positive interactions between species can mitigate environmental stress and recent work suggests that incorporating positive interactions into restoration efforts may improve restoration outcomes. We hypothesized that the addition of a potential facultative mutualist, the native hard clam (Mercenaria mercenaria), could enhance seagrass bed recovery from disturbance. We conducted two experiments to examine the independent and interacting effects of hard clam addition and physical disturbance mimicking propeller scarring on mixed community Zostera marina and Halodule wrightii seagrass beds in North Carolina. Adding clams to seagrass beds exposed to experimental disturbance generally enhanced seagrass summer growth rates and autumn shoot densities. In contrast, clam addition to non‐disturbed seagrass beds did not result in any increase in seagrass growth rates or shoot densities. Clam enhancement of autumn percent cover relative to areas without clam addition was most prominent after Hurricane Dorian, suggesting that clams may also enhance seagrass resilience to repeated disturbances. By June of the next growing season, disturbed areas with clam additions had greater percent cover of seagrass than disturbed areas without clam additions. Beds that were disturbed in April had higher percent cover than areas disturbed in June of the previous growing season. Our results suggest that the timing and occurrence of physical disturbances may modify the ability of clams to facilitate seagrass resiliency and productivity. Understanding when and how to utilize positive, interspecific interactions in coastal restoration is key for improving restoration success rates.Sarah E. DonaherChristopher J. BaillieCarter S. SmithY. Stacy ZhangAnna AlbrightStacy N. TrackenbergEmory H. WellmanNina WoodardRachel K. GittmanWileyarticlebivalvecoastal restorationdisturbancefacilitationpropeller scarseagrassEcologyQH540-549.5ENEcosphere, Vol 12, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bivalve coastal restoration disturbance facilitation propeller scar seagrass Ecology QH540-549.5
spellingShingle	bivalve coastal restoration disturbance facilitation propeller scar seagrass Ecology QH540-549.5 Sarah E. Donaher Christopher J. Baillie Carter S. Smith Y. Stacy Zhang Anna Albright Stacy N. Trackenberg Emory H. Wellman Nina Woodard Rachel K. Gittman Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary
description	Abstract Rapid global degradation of coastal habitats can be attributed to anthropogenic activities associated with coastal development, aquaculture, and recreational surface water use. Restoration of degraded habitats has proven challenging and costly, and there is a clear need to develop novel approaches that promote resilience to human‐caused disturbances. Positive interactions between species can mitigate environmental stress and recent work suggests that incorporating positive interactions into restoration efforts may improve restoration outcomes. We hypothesized that the addition of a potential facultative mutualist, the native hard clam (Mercenaria mercenaria), could enhance seagrass bed recovery from disturbance. We conducted two experiments to examine the independent and interacting effects of hard clam addition and physical disturbance mimicking propeller scarring on mixed community Zostera marina and Halodule wrightii seagrass beds in North Carolina. Adding clams to seagrass beds exposed to experimental disturbance generally enhanced seagrass summer growth rates and autumn shoot densities. In contrast, clam addition to non‐disturbed seagrass beds did not result in any increase in seagrass growth rates or shoot densities. Clam enhancement of autumn percent cover relative to areas without clam addition was most prominent after Hurricane Dorian, suggesting that clams may also enhance seagrass resilience to repeated disturbances. By June of the next growing season, disturbed areas with clam additions had greater percent cover of seagrass than disturbed areas without clam additions. Beds that were disturbed in April had higher percent cover than areas disturbed in June of the previous growing season. Our results suggest that the timing and occurrence of physical disturbances may modify the ability of clams to facilitate seagrass resiliency and productivity. Understanding when and how to utilize positive, interspecific interactions in coastal restoration is key for improving restoration success rates.
format	article
author	Sarah E. Donaher Christopher J. Baillie Carter S. Smith Y. Stacy Zhang Anna Albright Stacy N. Trackenberg Emory H. Wellman Nina Woodard Rachel K. Gittman
author_facet	Sarah E. Donaher Christopher J. Baillie Carter S. Smith Y. Stacy Zhang Anna Albright Stacy N. Trackenberg Emory H. Wellman Nina Woodard Rachel K. Gittman
author_sort	Sarah E. Donaher
title	Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary
title_short	Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary
title_full	Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary
title_fullStr	Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary
title_full_unstemmed	Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary
title_sort	bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/8b48e57d067d4a28815cc716d5af4d69
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Bivalve facilitation mediates seagrass recovery from physical disturbance in a temperate estuary

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