气候变化领域集成服务门户(CCPortal): Distinct responses to warming within picoplankton communities across an environmental gradient

CCPortal

DOI	10.1111/gcb.17316
	Distinct responses to warming within picoplankton communities across an environmental gradient
	Stevens, Bethany L. F.; Peacock, Emily E.; Crockford, E. Taylor; Shalapyonok, Alexi; Neubert, Michael G.; Sosik, Heidi M.
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	5
卷号	30 期号:5
英文摘要	Picophytoplankton are a ubiquitous component of marine plankton communities and are expected to be favored by global increases in seawater temperature and stratification associated with climate change. Eukaryotic and prokaryotic picophytoplankton have distinct ecology, and global models predict that the two groups will respond differently to future climate scenarios. At a nearshore observatory on the Northeast US Shelf, however, decades of year-round monitoring have shown these two groups to be highly synchronized in their responses to environmental variability. To reconcile the differences between regional and global predictions for picophytoplankton dynamics, we here investigate the picophytoplankton community across the continental shelf gradient from the nearshore observatory to the continental slope. We analyze flow cytometry data from 22 research cruises, comparing the response of picoeukaryote and Synechococcus communities to environmental variability across time and space. We find that the mechanisms controlling picophytoplankton abundance differ across taxa, season, and distance from shore. Like the prokaryote, Synechococcus, picoeukaryote division rates are limited nearshore by low temperatures in winter and spring, and higher temperatures offshore lead to an earlier spring bloom. Unlike Synechococcus, picoeukaryote concentration in summer decreases dramatically in offshore surface waters and exhibits deeper subsurface maxima. The offshore picoeukaryote community appears to be nutrient limited in the summer and subject to much greater loss rates than Synechococcus. This work both produces and demonstrates the necessity of taxon- and site-specific knowledge for accurately predicting the responses of picophytoplankton to ongoing environmental change. Picophytoplankton are our planet's most abundant primary producers. To reconcile differences between regional and global predictions for their response to climate change, we here compare the dynamics of two types of picophytoplankton across a coast-to-open ocean gradient. Through an analysis of observations from 22 research cruises, this work explores the conditions under which predictions from global trends can be extended to a nearshore system.image
英文关键词	coastal ecology; continental shelf; LTER; niche correlation model; picophytoplankton; realized niche; stratification
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001227106700001
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290340
作者单位	Woods Hole Oceanographic Institution; Massachusetts Institute of Technology (MIT); University of California System; University of California Santa Barbara
推荐引用方式 GB/T 7714	Stevens, Bethany L. F.,Peacock, Emily E.,Crockford, E. Taylor,et al. Distinct responses to warming within picoplankton communities across an environmental gradient[J],2024,30(5).
APA	Stevens, Bethany L. F.,Peacock, Emily E.,Crockford, E. Taylor,Shalapyonok, Alexi,Neubert, Michael G.,&Sosik, Heidi M..(2024).Distinct responses to warming within picoplankton communities across an environmental gradient.GLOBAL CHANGE BIOLOGY,30(5).
MLA	Stevens, Bethany L. F.,et al."Distinct responses to warming within picoplankton communities across an environmental gradient".GLOBAL CHANGE BIOLOGY 30.5(2024).