气候变化领域集成服务门户(CCPortal): Large protistan mixotrophs in the North Atlantic Continuous Plankton Recorder time series: associated environmental conditions and trends

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DOI	10.3389/fmars.2024.1320046
	Large protistan mixotrophs in the North Atlantic Continuous Plankton Recorder time series: associated environmental conditions and trends
	Stamieszkin, Karen; Millette, Nicole C.; Luo, Jessica Y.; Follett, Elizabeth; Record, Nicholas R.; Johns, David G.
发表日期	2024
EISSN	2296-7745
起始页码	11
卷号	11
英文摘要	Aquatic ecologists are integrating mixotrophic plankton - here defined as microorganisms with photosynthetic and phagotrophic capacity - into their understanding of marine food webs and biogeochemical cycles. Understanding mixotroph temporal and spatial distributions, as well as the environmental conditions under which they flourish, is imperative to understanding their impact on trophic transfer and biogeochemical cycling. Mixotrophs are hypothesized to outcompete strict photoautotrophs and heterotrophs when either light or nutrients are limiting, but testing this hypothesis has been hindered by the challenge of identifying and quantifying mixotrophs in the field. Using field observations from a multi-decadal northern North Atlantic dataset, we calculated the proportion of organisms that are considered mixotrophs within individual microplankton samples. We also calculated a trophic index that represents the relative proportions of photoautotrophs (phytoplankton), mixotrophs, and heterotrophs (microzooplankton) in each sample. We found that the proportion of mixotrophs was positively correlated with temperature, and negatively with either light or inorganic nutrient concentration. This proportion was highest during summertime thermal stratification and nutrient limitation, and lowest during the North Atlantic spring bloom period. Between 1958 and 2015, changes in the proportion of mixotrophs coincided with changes in the Atlantic Multi-decadal Oscillation (AMO), was highest when the AMO was positive, and showed a significant uninterrupted increase in offshore regions from 1992-2015. This study provides an empirical foundation for future experimental, time series, and modeling studies of aquatic mixotrophs.
英文关键词	mixotroph; continuous plankton recorder; North Atlantic; AMO; stratification; nutrient limitation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:001190883700001
来源期刊	FRONTIERS IN MARINE SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298632
作者单位	Bigelow Laboratory for Ocean Sciences; William & Mary; Virginia Institute of Marine Science; National Center Atmospheric Research (NCAR) - USA; National Oceanic Atmospheric Admin (NOAA) - USA; University of Liverpool; Marine Biological Association United Kingdom
推荐引用方式 GB/T 7714	Stamieszkin, Karen,Millette, Nicole C.,Luo, Jessica Y.,et al. Large protistan mixotrophs in the North Atlantic Continuous Plankton Recorder time series: associated environmental conditions and trends[J],2024,11.
APA	Stamieszkin, Karen,Millette, Nicole C.,Luo, Jessica Y.,Follett, Elizabeth,Record, Nicholas R.,&Johns, David G..(2024).Large protistan mixotrophs in the North Atlantic Continuous Plankton Recorder time series: associated environmental conditions and trends.FRONTIERS IN MARINE SCIENCE,11.
MLA	Stamieszkin, Karen,et al."Large protistan mixotrophs in the North Atlantic Continuous Plankton Recorder time series: associated environmental conditions and trends".FRONTIERS IN MARINE SCIENCE 11(2024).