Seasonal analysis of artificial oyster reef ecosystems: implications for sustainable fisheries management

Xu, Min; Yang, Xin yuan; Song, Xiao; Xu, Kai da; Yang, Linlin

doi:10.1007/s10499-020-00617-x

Cited by 12 publications

(10 citation statements)

References 28 publications

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“…To describe the food web structure and energy flow distribution of the farm and trophic links among wild S. schlegelii adult stock, between July 2016 and August 2017 (sampled in July 2016, September 2016, November 2016, December 2016, January 2017, March 2017, April 2017, May 2017, June 2017, July 2017, and August 2017), we established nine sampling stations to collect biomass data for our Ecopath model precisely and from August 2016 to the present established one environmental monitoring station to measure water temperature (°C) and dissolved oxygen (DO) (mg L -1 ) in the farm (Xu et al, 2021). We used crab pots, gill nets, and trawl nets to collect samples and estimate the biomass of functional groups (measured in t km -2 ) in the farm.…”

Section: Study Site and Samplingmentioning

confidence: 99%

“…Thus, each prey item was entered as a proportion of the consumer's diet, and adjustments were made to obtain a balanced model. Most resident species fed both inside and outside of the aquaculture farm and could therefore be regarded as importing food items in their dietary composition (Xu et al, 2021). Flows were expressed in t wet weight km -2 year -1 , and biomasses were expressed in t wet weight km -2 .…”

Section: Inputs Adjustments and Calibrations Of The Ecopath Modelmentioning

confidence: 99%

“…When a balanced model was established, Ecopath was used to calculate a trophic level (TL) for each group on the basis of its diet. Adjustments and calibrations of the parameters in the model followed the procedures of Xu et al, 2019 andXu et al, 2021.…”

Section: Inputs Adjustments and Calibrations Of The Ecopath Modelmentioning

confidence: 99%

“…Of this, 1,000 km 2 (China Fisheries Association, 2021) of coastal aquaculture farms have been constructed using the deployment of artificial hard substrates, such as stones, to create so-called "sea ranching" (Yang, 2016). In 2013, a local community in the study area established a 2 km 2 sea cucumber aquaculture farm by deploying stones and artificial reefs (Xu et al, 2021). These hard substrates were gradually colonized naturally by native pacific oysters (Crassostrea gigas), to create artificial marine oyster reefs.…”

Section: Introductionmentioning

confidence: 99%

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Coastal aquaculture farms for the sea cucumber Apostichopus japonicus provide spawning and first-year nursery grounds for wild black rockfish, Sebastes schlegelii: A case study from the Luanhe River estuary, Bohai bay, the Bohai Sea, China

Qi²,

Liu³

et al. 2022

Front. Mar. Sci.

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Aquaculture farms are known to attract wild organisms from nearby areas. Sea cucumber Apostichopus japonicus aquaculture farms in Bohai Bay, the Bohai Sea, China, might provide spawning and nursery grounds for wild black rockfish Sebastes schlegelii populations. To identify the above, we studied the variation in the numbers of S. schlegelii larvae (and length-categories as a percentage of the natural population) via ichthyoplankton surveys by months from January to October 2020, and assessed the food web structure and energy flow distribution of the farm and trophic links of S. schlegelii natural stock by using Ecopath modeling in July 2016 to August 2017. Larvae with a length between 3.90-5.80 mm were observed in the farm in May 2020, the juveniles with an estimated trophic level of 4.31. Juveniles used the farms as first-year nursery ground, and then they swam into deeper waters in August of the following year. MTI analysis showed increasing biomass of S. schlegelii might result in a decrease in the biomass of crustacea, and had positive and negative impacts on mollusk and Hexagrammos otakii biomass. We argued that aquacultural infrastructures constructed by artificial reefs could be used as a fisheries management tool to enhance S. schlegelii stocks and that monitoring of other marine organisms, such as oysters, Rapana venosa, Charybdis japonica, and Asterias spp. etc., was necessary to maintain sustainable exploitations of aquacultural farm ecosystems. A paucity of knowledge surrounding the interactions between aquaculture farms and wild organisms needs furthermore researches.

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Section: Study Site and Samplingmentioning

confidence: 99%

Section: Inputs Adjustments and Calibrations Of The Ecopath Modelmentioning

confidence: 99%

Section: Inputs Adjustments and Calibrations Of The Ecopath Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coastal aquaculture farms for the sea cucumber Apostichopus japonicus provide spawning and first-year nursery grounds for wild black rockfish, Sebastes schlegelii: A case study from the Luanhe River estuary, Bohai bay, the Bohai Sea, China

Qi²,

Liu³

et al. 2022

Front. Mar. Sci.

Self Cite

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“…The increasing biomass of A. japonicus following enhancement resulted in a reduction in their food resources and indirect competition with the small zoobenthos group, leading to a simulated decline in the biomass of small zoobenthos below the threshold. R. venosa and A. japonicus are the typical reef-associated commercially important species on the northern coast of China, and the deployment of artificial reefs throughout the region provides an increase in settlement habitat for oysters and mussels (Xu et al, 2019;Xu et al, 2021). These species efficiently filter suspended particulate organic matter (POM) in the water column and provide food for higher trophic levels.…”

Section: Trophic Transfer Efficiency (Te)mentioning

confidence: 99%

Estimating ecological carrying capacity for stock enhancement in marine ranching ecosystems of Northern China

et al. 2022

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Marine ranching has been proposed as a promising solution to manage the depleted coastal fishery ecosystem in recent decades across China. Marine ranching integrates the practices of artificial habitat-based with aquaculture-based enhancement. Assessing the ecological carrying capacity of target species for enhancement is a precondition for determining the optimal numbers for release, particularly for those species whose habitat restrictions have been eliminated through the construction of artificial habitats in the marine ranch. A responsible approach to stock enhancement aims not only to increase total yield and stock abundance but also to consider any potential effects on ecosystem structure and function. A time-dynamic, ecosystem model was constructed using Ecopath with Ecosim for the Laizhou Bay (Bohai Sea) marine ranching ecosystem in the nearshore waters of northern China. Two sedentary target species with potential for stock enhancement, i.e., the carnivorous red snail Rapana venosa and the detritivorous sea cucumber Apostichopus japonicus, were selected to simulate and estimate their ecological carrying capacities and project their overall effects on the ecosystem. Ecological carrying capacity was defined as the maximum standing stocks of the target species that would not cause “unacceptable” impacts on the ecosystem function and resilience, i.e., not cause any other group’s biomass to fall below 10% of its original biomass. The ecological carrying capacities estimated for R. venosa and A. japonicus were 623.46 and 200.57 t·km−2, respectively, corresponding to 7.8 and 5.0 times higher than their current standing stocks. Simulations of R. venosa enhancement showed distinct effects of increased target species abundance on other functional groups and ecosystem properties. An increase in red snail biomass caused negative impacts on the biomass of most other functional groups and ecosystem indicators, such as Finn’s cycling index, transfer efficiency, and Kempton’s Q index. In contrast, the simulated A. japonicus enhancement had relatively few impacts, and the biomasses of most other functional groups and ecosystem indicators did not change or changed very slightly (<5%). The current model framework provides a means of estimating the ecological carrying capacity in commercial-scale stock enhancement practices and avoiding potential ecological risks for marine ranching in northern China.

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Comparison of floating and traditional artificial reef areas using an ecosystem-based approach in the Dashentang area of Bohai Bay, China

Han,

Pang,

Liu

et al. 2024

Fisheries Research

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Seasonal analysis of artificial oyster reef ecosystems: implications for sustainable fisheries management

Cited by 12 publications

References 28 publications

Coastal aquaculture farms for the sea cucumber Apostichopus japonicus provide spawning and first-year nursery grounds for wild black rockfish, Sebastes schlegelii: A case study from the Luanhe River estuary, Bohai bay, the Bohai Sea, China

Coastal aquaculture farms for the sea cucumber Apostichopus japonicus provide spawning and first-year nursery grounds for wild black rockfish, Sebastes schlegelii: A case study from the Luanhe River estuary, Bohai bay, the Bohai Sea, China

Estimating ecological carrying capacity for stock enhancement in marine ranching ecosystems of Northern China

Comparison of floating and traditional artificial reef areas using an ecosystem-based approach in the Dashentang area of Bohai Bay, China

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