干旱区生态环境知识资源中心(Arid): Plankton Community Changes From Warm to Cold Winters in the Oligotrophic Subtropical Ocean

Arid

DOI	10.3389/fmars.2020.00677
	Plankton Community Changes From Warm to Cold Winters in the Oligotrophic Subtropical Ocean
	Armengol, Laia; Franchy, Gara; Ojeda, Alicia; Hernandez-Leon, Santiago
通讯作者	Armengol, L
来源期刊	FRONTIERS IN MARINE SCIENCE
EISSN	2296-7745
出版年	2020
卷号	7
英文摘要	Subtropical gyres are large areas of the ocean characterized by high stratification, low nutrients, and low primary production. The Canary Current System (CanCS) shows a rather strong seasonal thermocline during most of the annual cycle, which erodes through convective mixing from January to March promoting the so-called Late Winter Bloom (LWB). Atmospheric deposition from the Sahara desert is also another key feature of the CanCS providing additional nutrients to the euphotic zone. As a consequence of global warming, these oligotrophic regimes systems are expanding and the temperature increase affects phytoplankton, and reverberate on the food web structure and biogeochemical cycles. In the CanCS, the effect of warming and dust deposition on the planktonic community remains poorly know. Here, we show the effects of a 0.5?C increase in ocean temperature during two consecutive years. During 2011, winter temperature allowed the development of the LWB, promoting the increase of autotrophic cells and the coexistence of the microbial loop and the "classic" trophic web. The former predominated before and after the LWB, while the latter prevailed during the LWB. The rather high temperature during 2010 prevented the LWB development, causing highly oligotrophic conditions and episodic events of Saharan dust contributing to nutrient inputs. During this warm year, we found a dominance of small cells such as nanoflagellates and dinoflagellates, and surprisingly high biomass of mesozooplankton, hinting at the "tunneling effect" as an alternative trophic pathway (rapid uptake of phosphate by prokaryotes which are consumed by flagellates and then by zooplankton). These changes show the impact of a slight increase in temperature in this oligotrophic system and how future scenarios in the context of global warming could promote considerable shifts in the trophic web structure.
英文关键词	phytoplankton microplankton late winter bloom oligotrophic waters tunneling effect
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000560705700001
WOS关键词	TIME-SERIES STATION ; PACIFIC IRONEX II ; SAHARAN DUST ; CANARY-ISLANDS ; PHYTOPLANKTON BIOMASS ; BIOLOGICAL RESPONSE ; POPULATION-DYNAMICS ; ZOOPLANKTON BIOMASS ; NITROGEN-FIXATION ; WATER-COLUMN
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325691
作者单位	[Armengol, Laia; Franchy, Gara; Ojeda, Alicia; Hernandez-Leon, Santiago] Univ Las Palmas Gran Canaria, Inst Oceanog & Cambio Global, IOCAG, Unidad Asociada ULPGC CSIC, Las Palmas Gran Canaria, Spain
推荐引用方式 GB/T 7714	Armengol, Laia,Franchy, Gara,Ojeda, Alicia,et al. Plankton Community Changes From Warm to Cold Winters in the Oligotrophic Subtropical Ocean[J],2020,7.
APA	Armengol, Laia,Franchy, Gara,Ojeda, Alicia,&Hernandez-Leon, Santiago.(2020).Plankton Community Changes From Warm to Cold Winters in the Oligotrophic Subtropical Ocean.FRONTIERS IN MARINE SCIENCE,7.
MLA	Armengol, Laia,et al."Plankton Community Changes From Warm to Cold Winters in the Oligotrophic Subtropical Ocean".FRONTIERS IN MARINE SCIENCE 7(2020).