DAIS, Università Ca' Foscari, Via Torino 155, 30170, Mestre, Venice, Italy.
Università Iuav di Venezia, Dorsoduro 2206, 30123, Venice, Italy.
Ambio. 2023 Dec;52(12):2023-2033. doi: 10.1007/s13280-023-01900-w. Epub 2023 Jul 13.
The role of bivalve aquaculture as a carbon sink is highly debated, without a general consensus on the components to include in the budget. This study proposes to estimate the terms of the budget using a scope-for-growth-based model. The model was applied at 12 Mediterranean sites, with environmental forcings provided by operational oceanography data spanning over 12 years. Mussels were found to be slight sinks, with a limited variability across sites, if all components of the budget, i.e. accumulation in soft tissue, emissions associated with calcification and respiration, are included. The differences found among stations concerning the calcification and soft tissue contributions to the budget were found to be related to site-specific productivity and water chemistry parameters. This led to the identification of a set of meta-models, which could be used for relating the budget to local conditions, at a screening level, rendering them useful for optimal site selection.
双壳贝类养殖作为碳汇的作用备受争议，对于纳入预算的组成部分尚未达成普遍共识。本研究拟采用基于生长范围的模型来估算预算的各项条件。该模型应用于 12 个地中海站点，使用涵盖 12 年的海洋业务数据作为环境驱动力。结果表明，如果将预算的所有组成部分（即软组织中的积累、钙化和呼吸相关的排放）都包括在内，贻贝则是轻微的汇，且在各站点之间的变化很小。而站点之间在预算中钙化和软组织的贡献方面的差异，则与特定站点的生产力和水化学参数有关。这导致了一组元模型的识别，这些模型可用于在筛选水平上，将预算与当地条件相关联，这使得它们对于最佳站点选择非常有用。
