气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and growth of four North Atlantic bivalves

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DOI	https://doi.org/10.1594/PANGAEA.908103
	Seawater carbonate chemistry and growth of four North Atlantic bivalves
	Young; C; Gobler; Christopher J
发布日期	2019-11-06
数据集类型	dataset
英文关键词	Animalia ; Argopecten irradians ; Benthic animals ; Benthos ; Bottles or small containers/Aquaria ( 20 L) ; Coast and continental shelf ; Crassostrea virginica ; Growth/Morphology ; Laboratory experiment ; Mercenaria mercenaria ; Mollusca ; Mytilus edulis ; North Atlantic ; Other ; Single species ; Temperate
英文简介	Coastal ecosystems can experience acidification via upwelling, eutrophication, riverine discharge, and climate change. While the resulting increases in pCO2 can have deleterious effects on calcifying animals, this change in carbonate chemistry may benefit some marine autotrophs. Here, we report on experiments performed with North Atlantic populations of hard clams (Mercenaria mercenaria), eastern oysters (Crassostrea virginica), bay scallops (Argopecten irradians), and blue mussels (Mytilus edulis) grown with and without North Atlantic populations of the green macroalgae, Ulva. In six of seven experiments, exposure to elevated pCO2 levels ( 1700 µatm) resulted in depressed shell- and/or tissue-based growth rates of bivalves compared to control conditions, whereas rates were significantly higher in the presence of Ulva in all experiments. In many cases, the co-exposure to elevated pCO2 levels and Ulva had an antagonistic effect on bivalve growth rates whereby the presence of Ulva under elevated pCO2 levels significantly improved their performance compared to the acidification-only treatment. Saturation states for calcium carbonate (Ω) were significantly higher in the presence of Ulva under both ambient and elevated CO2 delivery rates, and growth rates of bivalves were significantly correlated with Omega in six of seven experiments. Collectively, the results suggest that photosynthesis and/or nitrate assimilation by Ulva increased alkalinity, fostering a carbonate chemistry regime more suitable for optimal growth of calcifying bivalves. This suggests that large natural and/or aquacultured collections of macroalgae in acidified environments could serve as a refuge for calcifying animals that may otherwise be negatively impacted by elevated pCO2 levels and depressed Omega.
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/215730
推荐引用方式 GB/T 7714	Young,C,Gobler,et al. Seawater carbonate chemistry and growth of four North Atlantic bivalves.2019-11-06.https://doi.org/10.1594/PANGAEA.908103.