气候变化领域集成服务门户(CCPortal): Photosynthetic activity buffers ocean acidification in seagrass meadows

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.834083
	Photosynthetic activity buffers ocean acidification in seagrass meadows
	Hendriks; Iris; Olsen; Ylva; Ramajo; L; Basso; L; Steckbauer; Alexandra; Moore; T S; Howard; J; Duarte; Carlos Manuel
发布日期	2014-07-16
数据集类型	dataset
英文关键词	Benthos ; Biomass/Abundance/Elemental composition ; Coast and continental shelf ; Field observation ; Growth/Morphology ; Macroalgae ; Mediterranean Sea ; Plantae ; Posidonia oceanica ; Single species ; Temperate ; Tracheophyta
英文简介	Macrophytes growing in shallow coastal zones characterised by intense metabolic activity have the capacity to modify pH within their canopy and beyond. We observed diel pH changes in shallow (5-12 m) seagrass (Posidonia oceanica) meadows spanning 0.06 pH units in September to 0.24 units in June. The carbonate system (pH, DIC, and aragonite saturation state (omega Ar)) and O2 within the meadows displayed strong diel variability driven by primary productivity, and changes in chemistry were related to structural parameters of the meadow, in particular, the leaf surface area available for photosynthesis (LAI). LAI was positively correlated to mean, max and range pHNBS and max and range omega Ar. In June, vertical mixing (as Turbulent Kinetic Energy) influenced max and min omega Ar, while in September there was no effect of hydrodynamics on the carbonate system within the canopy. Max and range omega Ar within the meadow showed a positive trend with the calcium carbonate load of the leaves, pointing to a possible link between structural parameters, omega Ar and carbonate deposition.
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/217415
推荐引用方式 GB/T 7714	Hendriks,Iris,Olsen,et al. Photosynthetic activity buffers ocean acidification in seagrass meadows.2014-07-16.https://doi.org/10.1594/PANGAEA.834083.