干旱区生态环境知识资源中心(Arid): Rates and drivers of Red Sea plankton community metabolism

Arid

DOI	10.5194/bg-16-2983-2019
	Rates and drivers of Red Sea plankton community metabolism
	Lopez-Sandoval, Daffne C.; Rowe, Katherine; Carillo-de-Albonoz, Paloma; Duarte, Carlos M.; Agusti, Susana
通讯作者	Lopez-Sandoval, Daffne C.
来源期刊	BIOGEOSCIENCES
ISSN	1726-4170
EISSN	1726-4189
出版年	2019
卷号	16 期号:15 页码:2983-2995
英文摘要	Resolving the environmental drivers shaping planktonic communities is fundamental for understanding their variability, in the present and the future, across the ocean. More specifically, addressing the temperature-dependence response of planktonic communities is essential as temperature plays a key role in regulating metabolic rates and thus potentially defining the ecosystem functioning. Here we quantified plankton metabolic rates along the Red Sea, a uniquely oligotrophic and warm environment, and analysed the drivers that regulate gross primary production (GPP), community respiration (CR), and net community production (NCP). The study was conducted on six oceanographic surveys following a north-south transect along the Saudi Arabian coast. Our findings revealed that GPP and CR rates increased with increasing temperature (R-2 = 0.41 and 0.19, respectively; p<0.001 in both cases), with a higher activation energy (E-a) for GPP (1.20 +/- 0.17 eV) than for CR (0.73 +/- 0.17 eV). The higher E-a for GPP than for CR resulted in a positive relationship between NCP and temperature. This unusual relationship is likely driven by the relatively higher nutrient availability found towards the warmer region (i.e. southern Red Sea), which favours GPP rates above the threshold that separates autotrophic from heterotrophic communities (1.7 mmol O-2 m(-3) d(-1)) in this region. Due to the arid nature, the basin lacks riverine and terrestrial inputs of organic carbon to subsidise a higher metabolic response of heterotrophic communities, thus constraining CR rates. Our study suggests that GPP increases steeply with increasing temperature in the warm ocean when relatively high nutrient inputs are present.
类型	Article
语种	英语
国家	Saudi Arabia
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000478618200002
WOS关键词	PHYTOPLANKTON PRODUCTION ; TEMPERATURE-DEPENDENCE ; OLIGOTROPHIC OCEAN ; CHLOROPHYLL-A ; RESPIRATION ; CARBON ; BALANCE ; PHOTOSYNTHESIS ; PRODUCTIVITY ; VARIABILITY
WOS类目	Ecology ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214611
作者单位	KAUST, Red Sea Res Ctr, Jeddah 239556900, Saudi Arabia
推荐引用方式 GB/T 7714	Lopez-Sandoval, Daffne C.,Rowe, Katherine,Carillo-de-Albonoz, Paloma,et al. Rates and drivers of Red Sea plankton community metabolism[J],2019,16(15):2983-2995.
APA	Lopez-Sandoval, Daffne C.,Rowe, Katherine,Carillo-de-Albonoz, Paloma,Duarte, Carlos M.,&Agusti, Susana.(2019).Rates and drivers of Red Sea plankton community metabolism.BIOGEOSCIENCES,16(15),2983-2995.
MLA	Lopez-Sandoval, Daffne C.,et al."Rates and drivers of Red Sea plankton community metabolism".BIOGEOSCIENCES 16.15(2019):2983-2995.