Carbon and nutrient fluxes from seagrass and mangrove wrack are mediated by soil interactions

Breithaupt, Joshua L.; Duga, Evan; Witt, Megan; Filyaw, Rebecca; Friedland, Noah S.; Donnelly, Melinda; Walters, Linda J.; Chambers, Lisa G.

doi:10.1016/j.ecss.2019.106409

Cited by 7 publications

(7 citation statements)

References 36 publications

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“…Wrack and predation are commonly reported mechanisms for mangrove mortalities [11], however, they did not play a large role in this experiment. CANA experiences greatest wrack abundances during fall when seagrass leaves are shed and gather along the shoreline [80]. This process coincided with high water season, which effectively prevented the wrack from excessive accumulation around and on the mangroves.…”

Section: Wrack and Predationmentioning

confidence: 99%

“…To determine wrack cover and wrack thickness in a nondestructive manner, five quadrats (0.25 m 2 ) were haphazardly placed within each replicate of each treatment at the elevation of the planted mangroves, landward of the breakwater, if present. Wrack cover was identified based on percent cover calculated from the point-intercept method [80]. Wrack thickness (mm) was the calculated mean of wrack depth taken at five haphazard points within the quadrat [65].…”

Section: Environmental Factorsmentioning

confidence: 99%

“…The presence of other vegetation such as Batis maritima (saltwort) and Salicornia ambigua (perennial glasswort) can also have a positive impact on young R. mangle health by reducing interstitial salinity and increasing nutrients such as carbon, nitrogen, and phosphorus [75]. Decaying organic matter (wrack) is another source of nutrients for young mangroves, barring that the abundance is not great enough to smother the plant [79,80].…”

Section: Introductionmentioning

confidence: 99%

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Strategies for Successful Mangrove Living Shoreline Stabilizations in Shallow Water Subtropical Estuaries

et al. 2021

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By combatting erosion and increasing habitat, mangrove living shorelines are an effective alternative to hard-armoring in tropical and subtropical areas. An experimental red mangrove living shoreline was deployed within Mosquito Lagoon, Florida, using a factorial design to test the impact of mangrove age, breakwater presence, and mangrove placement on mangrove survival within the first year of deployment. Mixed mangrove age treatments were included to identify if seedling (11-month-old) survival could be enhanced by the presence of transitional (23-month-old) and adult (35 to 47-month-old) mangroves. Environmental factors were monitored to detect possible causes of mangrove mortalities. Approximately half (50.6%) of mangroves died, and of those, 90.7% occurred within the annual high-water season, and 88.9% showed signs of flooding stress. Planting seedlings haphazardly among older mangroves did not attenuate enough wave energy to significantly increase seedling survival. Breakwaters alleviated stress through a reduction in water velocity and wave height, increasing the odds of survival by 197% and 437% when mangroves were planted in the landward and seaward rows, respectively. Compared to seedlings, deployment of adult mangroves increased survival odds by 1087%. Collectively, our results indicate that sites with a high-water season should utilize a breakwater structure and mangroves with a woody stem.

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Section: Wrack and Predationmentioning

confidence: 99%

Section: Environmental Factorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Strategies for Successful Mangrove Living Shoreline Stabilizations in Shallow Water Subtropical Estuaries

et al. 2021

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“…Once samples were returned to the laboratory, all surface water samples were immediately vacuum filtered through a 0. 45 [43].…”

Section: Laboratory Analysis Of Aqueous Nutrientsmentioning

confidence: 99%

“…BESE material is almost completely decomposable (~98% organic matter) and predominately composed of C, with an atomic molar C:N:P ratio of 164000:5:1. For context, two other types of potential microbial substrates that are commonly available in the study ecosystem include fresh red mangrove (Rhizophora mangle) leaves (average molar C:N:P of 1128:26:1) and fresh shoal grass (Halodule wrightii) leaves (average 308:22:1; [45]). Therefore, as a substrate for microbial respiration, BESE is extremely rich in C relative to N and P. However, the ratio of N:P alone (5:1) is quite low, suggesting a P availability in excess of many biological organism's N:P demand (e.g., 16:1 (N:P) for marine phytoplankton [38] and 22:1 for soil microbes [46]).…”

Section: Bese Impacts On Biogeochemical Properties and Processes Under Laboratory Conditionsmentioning

confidence: 99%

Biodegradable Material for Oyster Reef Restoration: First-Year Performance and Biogeochemical Considerations in a Coastal Lagoon

et al. 2021

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Oyster reef restoration efforts increasingly consider not only oyster recruitment, but also the recovery of ecological functions and the prevention of deploying harmful plastics. This study investigated the efficacy of a biodegradable plastic-alternative, BESE-elements®, in supporting oyster reef restoration in east-central Florida (USA) with consideration for how this material also influences biogeochemistry. Four experiments (two laboratory, two field-based) were conducted to evaluate the ability of BESE to serve as a microbial substrate, release nutrients, support oyster recruitment and the development of sediment biogeochemical properties on restored reefs, and degrade under field conditions. The results indicated BESE is as successful as traditional plastic in supporting initial reef development. In the lab, BESE accelerated short-term (10-day) sediment respiration rates 14-fold and released dissolved organic carbon, soluble reactive phosphorus, and nitrate to the surface water (71,156, 1980, and 87% increase, respectively) relative to without BESE, but these effects did not translate into measurable changes in reef sediment nutrient pools under field conditions. BESE lost 7–12% mass in the first year, resulting in a half-life of 4.4–6.7 years. Restoration practitioners should evaluate the biogeochemical properties of biodegradable materials prior to large-scale deployment and consider the fate of the restoration effort once the material degrades.

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Nature-based solutions for coastal dune restoration: The case study of AlgoBox in South Brittany, France

Sedrati,

Dalour,

Bulot

et al. 2025

Ecological Engineering

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Carbon and nutrient fluxes from seagrass and mangrove wrack are mediated by soil interactions

Cited by 7 publications

References 36 publications

Strategies for Successful Mangrove Living Shoreline Stabilizations in Shallow Water Subtropical Estuaries

Strategies for Successful Mangrove Living Shoreline Stabilizations in Shallow Water Subtropical Estuaries

Biodegradable Material for Oyster Reef Restoration: First-Year Performance and Biogeochemical Considerations in a Coastal Lagoon

Nature-based solutions for coastal dune restoration: The case study of AlgoBox in South Brittany, France

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