This study investigates the biomass production and growth strategies of the relict seagrass Zostera marina, a species sensitive to high temperatures, within the Venice Lagoon (Italy). Monthly data collected from January to December 2019 and November 2020 to October 2021 in a single station in proximity of one lagoon port-entrance, along with seasonal data from 2018 and 2021 for the whole lagoon, were analyzed in conjunction with environmental parameters and macroalgal presence. The objective was to understand the impact of climate changes, particularly rising water temperatures, on the cover, standing crop and net primary production of Z. marina and the effect of the MoSE gate closures designed to protect Venice from high-water events. Despite expectations of a decline due to temperature increase and reduced water exchange, our findings reveal a notable adaptability of Z. marina, with increases in both cover and biomass. This resilience suggests that Z. marina can counteract environmental challenges, making this study relevant for broader ecological and conservation contexts beyond the Venice Lagoon.

中文翻译：

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大叶藻（一种喜冷的残余物种）的生物量、生产和生长策略：以威尼斯泻湖为研究案例


本研究调查了威尼斯泻湖（意大利）内残留海草大叶藻（Zostera marina）的生物量生产和生长策略，大叶藻是一种对高温敏感的物种。结合环境参数和大型藻类的存在情况，对 2019 年 1 月至 12 月以及 2020 年 11 月至 2021 年 10 月在一个泻湖港口入口附近的单个站收集的月度数据以及整个泻湖 2018 年和 2021 年的季节性数据进行了分析。目的是了解气候变化，特别是水温上升，对 Z. marina 的覆盖面积、未收作物和净初级生产力的影响，以及旨在保护威尼斯免受高水位事件影响的 MoSE 闸门关闭的影响。尽管预期由于温度升高和水交换减少而导致数量下降，但我们的研究结果表明，Z. marina 具有显着的适应性，覆盖率和生物量均有所增加。这种恢复力表明 Z. marina 可以应对环境挑战，使这项研究与威尼斯泻湖以外更广泛的生态和保护环境相关。