期刊
ESTUARINE COASTAL AND SHELF SCIENCE
卷 256, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2021.107374
关键词
Macroalgae; Coastal pH; Eutrophication; Argentinean Patagonia; Ulva lactuca
资金
- Universidad Nacional de Mar del Plata (UNMdP), Argentina [Exa 834/17]
- Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina [PIP 819]
- Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT), Argentina [PICT 2018-3421, PICT 2015-3823]
- Consejo Nacional de Investigaciones Cientificas y Tecnica, Argentina [POSDOC16]
Nutrient input drives macroalgal blooms and increases in photosynthetic activity in coastal ecosystems. Under eutrophic conditions, the photosynthetic activity of Ulva lactuca can control pH variability, while seasonal pH variations are related to environmental features such as seawater temperature.
Nutrient input drive macroalgal blooms and increases in photosynthetic activity in coastal ecosystems. An intense macroalgal photosynthetic activity can increase the surrounding pH and it could prevent the acidification that often follows an eutrophication process. We tested this hypothesis with field sampling and experiments in a macrotidal (up to 9 m in amplitude) coastal system within a semi-desert region with contrasting eutrophic conditions and Ulva lactuca blooms in the northern Argentinean Patagonia (San Antonio Bay). Our results indicate that daily pH variability during low tide could be controlled by the photosynthetic activity of Ulva lactuca under eutrophic conditions. At seasonal scale, the pH variations were related to environmental features, particularly seawater temperature. Both environmental (i.e. high solar radiation, negligible freshwater inputs and large tidal action) and anthropogenic nutrient inputs into the studied area promote the Ulva lactuca blooms, which in turn increases the surrounding pH in well oxygenated seawater through the intense photosynthetic activity. Our study shows that eutrophication instead of being a driver of acidification, could contribute to its prevention in well oxygenated marine coastal systems located within semi-desert regions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据