气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and growth of Macroalgae, Ulva and Seagrass, Zostera marina

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.908107
	Seawater carbonate chemistry and growth of Macroalgae, Ulva and Seagrass, Zostera marina
	Young; C; Peterson; Bradley J; Gobler; Christopher J
发布日期	2019-11-06
数据集类型	dataset
英文关键词	Benthos ; Biomass/Abundance/Elemental composition ; Bottles or small containers/Aquaria ( 20 L) ; Chlorophyta ; Coast and continental shelf ; Growth/Morphology ; Laboratory experiment ; Macroalgae ; North Atlantic ; Plantae ; Primary production/Photosynthesis ; Seagrass ; Single species ; Species interaction ; Temperate ; Tracheophyta ; Ulva lactuca ; Zostera marina
英文简介	This study reports on experiments performed with a Northwest Atlantic species of the macroalgae, Ulva, and the seagrass, Zostera marina, grown under ambient and elevated levels of pCO2, and subjected to competition with each other. When grown individually, elevated pCO2 significantly increased growth rates and productivity of Ulva and Zostera, respectively, beyond control treatments (by threefold and 27%, respectively). For both primary producers, significant declines in tissue δ13C signatures suggested that increased growth and productivity were associated with a shift from use of HCO3− toward CO2 use. When grown under higher pCO2, Zostera experienced significant increases in leaf and rhizome carbon content as well as significant increases in leaf carbon-to-nitrogen ratios, while sediments within which high CO2 Zostera were grown had a significantly higher organic carbon content. When grown in the presence of Ulva; however, above- and below-ground productivity and tissue nitrogen content of Zostera were significantly lower, revealing an antagonistic interaction between elevated CO2 and the presence of Ulva. The presence of Zostera had no significant effect on the growth of Ulva. Collectively, this study demonstrates that while Ulva and Zostera can each individually benefit from elevated pCO2 levels, the ability of Ulva to grow more rapidly and inhibit seagrass productivity under elevated pCO2, coupled with accumulation of organic C in sediments, may offset the potential benefits for Zostera within high CO2 environments.
空间范围	Latitude: 40.850000 * Longitude: -72.250000
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/215729
推荐引用方式 GB/T 7714	Young,C,Peterson,et al. Seawater carbonate chemistry and growth of Macroalgae, Ulva and Seagrass, Zostera marina.2019-11-06.https://doi.org/10.1594/PANGAEA.908107.