The shifts in soil metabolism as a response to warming and wrack subsidies on Antarctic sedimentary shores have not been studied to date. With this aim, macroalgal deposits, as well as inorganic nutrients and CO₂ emission were quantified along the shores of Port Foster, on Deception Island, Antarctic Peninsula. The results indicated a positive relationship between the amount of wrack supplies and sediment metabolism, measured both as CO₂ emission through the sediment surface and as amount of inorganic nutrients released to the interstitial pore water. The effect of warming on algal wrack decay was analyzed in a manipulative field experiment where passive open-top chambers (OTCs) were used to increase soil temperature. By doing this, temperature raised by 0.9°C under patches of the red macroalgae Palmaria decipiens, whereas there was an increase of 2.4°C on bare sand. The results indicated that a small warming accelerated mineralization rates of C, N and P of the algal biomass, without significant changes in the bulk of inorganic nutrients released. Over 12 days of experiment, 8.3% of the total C in algal tissues was released as CO₂ in the OTC plots, compared to 6.4% at ambient temperature. CO₂ emission in bare sand plots warmed with OTCs was three times the amount measured in the ambient plots. Collembola was the dominant soil fauna, with densities negatively affected by warming and positively related to the organic content of sediment. This study confirms the key role of sandy shores in recycling ocean derived organic matter, highlighting the sensitivity of Antarctic ecosystems to a changing scenario of climate change that predicts significant increases in temperature over the next few decades.

迄今为止，尚未研究过响应南极沉积海岸变暖和沉船补贴的土壤代谢变化。为此，对南极半岛欺骗岛的福斯特港沿岸的大型藻类沉积物以及无机养分和CO ₂排放进行了量化。结果表明，残骸供应量与沉积物代谢之间呈正相关关系（以CO ₂衡量）通过沉积物表面的排放以及大量无机养分释放到间隙孔隙水中。在操纵性野外实验中分析了变暖对藻类残骸腐烂的影响，在该实验中，使用了被动式开放式顶棚（OTC）来提高土壤温度。这样一来，在红色大藻Palmaria decipiens的斑块下，温度升高了0.9°C ，而在裸露的沙子上，温度升高了2.4°C。结果表明，小幅度的升温加速了藻类生物质的C，N和P的矿化速率，而释放的大部分无机养分却没有显着变化。在12天的实验中，OTC图中藻类组织中总C的8.3％以CO _2的形式释放，而环境温度为6.4％。一氧化碳₂用OTCs加热的裸露沙地的二氧化碳排放量是周围土地测量值的三倍。Collembola是主要的土壤动物，密度受到变暖的负面影响，并且与沉积物的有机含量成正相关。这项研究证实了沙质海岸在循环利用海洋有机物方面的关键作用，突显了南极生态系统对气候变化变化的敏感性，该变化预测了未来几十年温度将显着升高。