气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and growth of tropical marine macroalgae

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.908485
	Seawater carbonate chemistry and growth of tropical marine macroalgae
	Ho; Maureen; Carpenter; Robert C
发布日期	2019-11-14
数据集类型	dataset
英文关键词	Amansia rhodantha ; Benthos ; Chromista ; Coast and continental shelf ; Containers and aquaria (20- 1000 L or &lt ; 1 m**2) ; Dictyota bartayresiana ; Growth/Morphology ; Laboratory experiment ; Lobophora variegata ; Macroalgae ; Ochrophyta ; Other ; Rhodophyta ; Single species ; South Pacific ; Tropical
英文简介	The physical environment plays a key role in facilitating the transfer of nutrients and dissolved gases to marine organisms and can alter the rate of delivery of dissolved inorganic carbon. For non-calcifying macroalgae, water motion can influence the physiological and ecological responses to various environmental changes such as ocean acidification (OA). We tested the effects of lowered pH under three different flow speeds on three dominant non-calcifying macroalgal species differing in their carbon-use and are commonly found in the back reefs of Moorea, French Polynesia. Relative growth rates (RGR) of two phaeophytes, Dictyota bartayresiana and Lobophora variegata (HCO3− users), and a rhodophyte, Amansia rhodantha (CO2 user) were measured to examine how the combined effects of OA and flow can affect algal growth. Growth rates were affected independently by pCO2 and flow treatments but there was no significant interactive effect. Additionally, growth rates among species varied within the different flow regimes. Of the three species, L. variegata had the overall greatest increase in RGR across all three flow speeds while A. rhodantha exhibited the greatest negative impact under elevated pCO2 at 0.1 cm/s. These differential responses among algal species demonstrate the importance of flow when examining responses to a changing environment, and if the responses of macroalgae differ based on their carbon-use strategies, it may provide advantages to some macroalgal species in a future, more acidic ocean.
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/215718
推荐引用方式 GB/T 7714	Ho,Maureen,Carpenter,et al. Seawater carbonate chemistry and growth of tropical marine macroalgae.2019-11-14.https://doi.org/10.1594/PANGAEA.908485.