Oyster Biodeposition Alleviates Sediment Nutrient Overload: A Case Study at Shenzhen Bay, China

Mangi, Autif Hussain; Qi, Yan; Song, Xiao; Song, Junting; Lan, Xiujin; Zhou, Junlan; Cai, Zhonghua

doi:10.3389/fmicb.2021.716201

Cited by 2 publications

(3 citation statements)

References 45 publications

(54 reference statements)

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“…Our overall results also suggested that the carbon degradation was higher compared to carbon fixation and the Calvin cycle. Our results are also in collaboration with the results matched from other studies (Mangi et al, 2021). As far as the comparison of Labile and Recalcitrant carbon between Oyster and Reference site was concerned, we found significant variations between the two distinct sites.…”

Section: Discussionsupporting

confidence: 91%

“…Shenzhen Bay has an area reserved for Oyster farming which is also a site of interest for researchers who want to explore the effect of Oyster farming on Shenzhen bay's aquatic ecosystem. Previous studies have reported a significant impact of Oyster farming on Shenzhen bay's water and sediment portion (Mangi et al, 2021). However, no study has yet provided sufficient and satisfactory knowledge about the effect of OBD on sediment's labile and recalcitrant form of carbon.…”

Section: Introductionmentioning

confidence: 99%

“…Oyster biodeposition (OBD) released from the Oysters get mixed with the sediment underneath and bring about changes in nutrients and physicochemical composition of sediments as well as in the water column (Mangi et al, 2021). There has been a lot of reported work on the organic matter distribution inside water bodies (Painter et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Oyster Bio Deposition Enhanced the Functional Potential of Labile and Recalcitrant Carbon in Shenzhen Bay’s Sediments

Sahar Ghulam Mohyuddin,

Autif Hussain Mangi,

Fahim Ullah Khan

et al. 2023

PJS

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Oysters are typical aquatic animals with their special biological property of filter feeding in the water column. However, the biodeposition of oysters may change the sediment chemistry and also may affect the biogeochemical processes. We conducted research work to determine the effect of Oyster Biodeposition (OBD) on the sediments microbes, and their metabolic abilities on carbon at the site rich with oyster culture area of Shenzhen Bay China. After biochemical and Geochip5 analysis, we found that the genes coding the metabolic enzymes pullulanase, glucoamylase, exoglucanase, cellobiase, xylanase, etc. were highly abundant in oyster farming place compared to reference place. Meanwhile, the functional genes cda (6%), pectinase (5%), and xyla (5%) were greatly abundant at the surface oyster area and they were showing significantly higher ( P= <0.05) normalized gene intensities compared to bottom sediment site. These genes were mostly involved in the degradation of labile and recalcitrant forms of carbon. These detected genes were mainly involved in the carbon degradation process and they were showing more tendency towards the degradation of labile carbon. Small abundance of enzymes such as glyoxal oxidase and phenol oxidase were also found which were involved in the degradation of recalcitrant carbon. Taken together, our results indicated that the OBD enhanced the degrading capacity of both labile and recalcitrant forms of carbon, it has a positive stimulating effect on sediment carbon metabolism.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%