双壳贝类和藻类的水产养殖具有显著的生态效益,然而,这些生物之间复杂的相互作用可以显著影响局部碳动力学。这项研究调查了共培养四种潮间带双壳类太平洋牡蛎(Crassostreagigas)的影响,马尼拉clams(Ruditapesphilippinarum),中国蛤仔(Cyclinasinensis),在特定的水质参数上,以及带有微藻(Isochrysisgalbana)的硬clams(Mercenariamercenaria),包括总颗粒物(TPM),总有机质(TOM),溶解无机碳(DIC),溶解二氧化碳(dCO2),溶解氧(DO),和铵(NH4+)浓度。将双壳类动物分为较小和较大的组,并在两种条件下进行培养:有藻类(WP)和无藻类(NP),以及匹配的控件。总颗粒物(TPM),总有机质(TOM),溶解氧(DO),铵态氮(NH4+),溶解无机碳(DIC),在培养3小时之前和之后测量CO2(dCO2)。结果揭示了特定物种对水化学的影响。C.gigas,C.sinensis和R.philippinarum在WP组中显示出DIC和dCO2的最强降低,表明与藻类的协同生物修复。M.雇佣军显著减少了TPM,突出了它的颗粒固碳潜力。大多数WP或NP组的DO浓度降低,反映培养的双壳类或微藻的呼吸。大多数物种的NH4+水平也有所下降,表明这些生物对氮的同化。总的来说,双壳类的大小显着影响碳和氮的处理能力。这些发现揭示了物种在调节水碳动力学方面的特定能力。进一步的研究应该探索将这些双壳类动物整合到负碳水产养殖系统中,以减轻对环境的影响。这项研究为浅海生态系统的局部碳动态提供了有价值的见解。
Aquaculture of bivalve shellfish and algae offers significant ecological benefits, yet the complex interactions between these organisms can substantially impact local carbon dynamics. This study investigated the effects of co-culturing four intertidal bivalve species Pacific oysters (Crassostrea gigas), Manila clams (Ruditapes philippinarum), Chinese clams (Cyclina sinensis), and hard clams (Mercenaria mercenaria) with microalgae (Isochrysis galbana) on specific water quality parameters, including total particulate matter (TPM), total organic matter (TOM), dissolved inorganic carbon (DIC), dissolved carbon dioxide (dCO2), dissolved oxygen (DO), and ammonium (NH4+) concentrations. The
bivalves were divided into smaller and larger groups and cultured under two conditions: with algae (WP) and without (NP), along with matched controls. Total particulate matter (TPM), total organic matter (TOM), dissolved oxygen (DO), ammonium nitrogen (NH4+), dissolved inorganic carbon (DIC), and CO2 (dCO2) were measured before and after 3-h cultivation. Results revealed species-specific impacts on water chemistry. C. gigas, C. sinensis and R. philippinarum showed the strongest reduction in DIC and dCO2 in WP groups, indicating synergistic bioremediation with algae. M. mercenaria notably reduced TPM, highlighting its particle carbon sequestration potential. DO concentrations decreased in most WP or NP groups, reflecting respiration of the cultured
bivalves or microalgae. NH4+ levels also declined for most species, indicating nitrogen assimilation by these creatures. Overall, the bivalve size significantly impacted carbon and nitrogen processing capacities. These findings reveal species-specific capabilities in regulating water carbon dynamics. Further research should explore integrating these
bivalves in carbon-negative aquaculture systems to mitigate environmental impacts. This study provides valuable insights underlying local carbon dynamics in shallow marine ecosystems.