Dietary reconstruction and influencing factors of oysters cultured in a typical estuarine bay of South China

Jiao, Mengyu; Zhou, Weiguo; Long, Chao; Zhang, Li; Xu, Peng; Li, Hanying; Suo, Anning; Yue, Weizhong

doi:10.1016/j.jclepro.2024.141773

Cited by 3 publications

(1 citation statement)

References 58 publications

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“…Shallow marine environments, including estuaries, bays, and adjacent continental shelves, provide optimal conditions for shellfish mariculture where the dynamics of POM are complex. Substantial terrestrial nutrients (e.g., nitrogen, phosphorus, and silica) from rivers foster the proliferation of phytoplankton, such as diatoms and dinoflagellates, which are important food sources for shellfish [17][18][19]. Moreover, a variety of terrestrial POM (e.g., higher plant debris, soil, and organic matter from human activities) can also be delivered to mariculture farms via ocean currents, tides, and resuspension processes, potentially contributing as an additional food source for shellfish [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Mussel Culture Activities Facilitate the Export and Burial of Particulate Organic Carbon

Han,

Zhang,

Lang

et al. 2024

JMSE

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The recent expansion of shellfish mariculture could significantly impact the ocean carbon cycle and its associated biogeochemical processes. To understand the source and fate of particulate organic carbon (POC), a summer cruise was conducted from September 8 to 10, 2022, at a mussel farm on Gouqi Island and its adjacent areas located in the East China Sea. Parameters included in situ temperature and salinity, contents of dissolved oxygen (DO), suspended particulate matter (SPM), POC, and chlorophyll a (Chl a), as well as the stable carbon isotopic composition (δ13C) of organic matter in particle and sediment samples, which were analyzed to facilitate a comparative assessment of the areas inside and outside the mussel farm. The POM was much fresher (POC/Chl a < 150) inside the farm with little impact from sediment resuspension (lower SPM content, 11.6 ± 6.6 mg/L), while a significant influence of sediment resuspension was found outside the farm (SPM > 20 mg/L, POC/Chl a > 150). A two end-member mixing model showed that 82.0 ± 6.0% of POC originated from marine algae within the farm, much higher than that outside the farming area (66.1 ± 7.8%). Moreover, elevated DO saturation but relatively low Chl a concentration within the farm suggested continuous algae consumption following potential high productivity. The averaged δ13C values were similar among suspended POC, sinking POC, and sedimentary organic carbon within the farm, implying the fast export and burial of POC. This is likely due to the filter-feeding habits of mussels, who ingest fresh POC and then pack it as fecal pellets that rapidly settle into the sediment. This study sheds light on the distribution and sources of POM inside and outside the mussel farm on Gouqi Island, enhancing our understanding of the marine carbon cycle on shellfish farms and providing insights into the underlying biogeochemical processes.

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Section: Introductionmentioning

confidence: 99%

Mussel Culture Activities Facilitate the Export and Burial of Particulate Organic Carbon

Han,

Zhang,

Lang

et al. 2024

JMSE

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Tracing potentially toxic elements in button mushroom cultivation and environmental implications: Insights via stable lead (Pb) isotope analysis

Liu,

Yu,

et al. 2024

Journal of Cleaner Production

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Spatial Differentiation of Mangrove Aboveground Biomass and Identification of Its Main Environmental Drivers in Qinglan Harbor Mangrove Nature Reserve

Wang,

Jiang,

et al. 2024

Sustainability

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In the Bamen Bay area of the Qinglan Harbor Mangrove Provincial Nature Reserve in Wenchang, Hainan Province, China, mangrove aboveground biomass (AGB) was estimated using high-resolution UAV ortho-imagery and UAV LiDAR data. The spatial distribution characteristics of AGB were studied using global Moran’s I index and hotspot analysis. Optimal geographic detectors and regression models were employed to analyze the relationship between AGB and key environmental factors. The results indicate that (1) the average AGB in the study area was 141.22 Mg/ha, with significant spatial variation. High AGB values were concentrated in the southwestern and northeastern regions, while low values were mainly found in the central and southeastern regions. (2) Plant species, water pH, soil total potassium, salinity, dissolved oxygen, elevation, soil organic matter, soil total phosphorus, and soil total nitrogen were identified as major factors influencing the spatial distribution of AGB. The interaction results indicate either bifactor enhancement or nonlinear enhancement, showing a significantly higher impact compared with single factors. (3) Comprehensive regression model results reveal that soil total nitrogen was the primary factor affecting AGB, followed by soil total potassium, with water pH having the least impact. Factors positively correlated with AGB promoted biomass growth, while elevation negatively affected AGB, inhibiting biomass accumulation. The findings provide critical insights that can guide targeted conservation efforts and management strategies aimed at enhancing mangrove ecosystem health and resilience, particularly by focusing on key areas identified for potential improvement and by addressing the complex interactions among environmental factors.

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Dietary reconstruction and influencing factors of oysters cultured in a typical estuarine bay of South China

Cited by 3 publications

References 58 publications

Mussel Culture Activities Facilitate the Export and Burial of Particulate Organic Carbon

Mussel Culture Activities Facilitate the Export and Burial of Particulate Organic Carbon

Tracing potentially toxic elements in button mushroom cultivation and environmental implications: Insights via stable lead (Pb) isotope analysis

Spatial Differentiation of Mangrove Aboveground Biomass and Identification of Its Main Environmental Drivers in Qinglan Harbor Mangrove Nature Reserve

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