@article {letscher_biodiversity_2023,
	title = {Biodiversity and stoichiometric plasticity increase pico-phytoplankton contributions to marine net primary productivity and the biological pump},
	journal = {Global Biogeochemical Cycles},
	volume = {n/a},
	number = {n/a},
	year = {2023},
	note = {_eprint: https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2023GB007756},
	pages = {e2023GB007756},
	abstract = {Earth System Models generally predict increasing upper ocean stratification from 21st century warming, which will cause a decrease in the vertical nutrient flux forcing declines in marine net primary productivity (NPP) and carbon export. Recent advances in quantifying marine ecosystem carbon to nutrient stoichiometry have identified large latitudinal and biome variability, with low-latitude oligotrophic systems harboring pico-sized phytoplankton exhibiting large phosphorus to carbon cellular plasticity. Climate forced changes in nutrient flux stoichiometry and phytoplankton community composition is thus likely to alter the ocean{\textquoteright}s biogeochemical response and feedback with the carbon-climate system. We have added three pico-phytoplankton functional types within the Biogeochemical Elemental Cycling component of the Community Earth System Model while incorporating variable cellular phosphorus to carbon stoichiometry for all represented phytoplankton types. The model simulates Prochlorococcus and Synechococcus populations that dominate the productivity and sinking carbon export of the tropical and subtropical ocean, and pico-eukaryote populations that contribute significantly to productivity and export within the subtropical to mid-latitude transition zone, with the western subtropical regions of each basin supporting the most P-poor stoichiometries. Subtropical gyre recirculation regions along the poleward flanks of surface western boundary currents are identified as regional hotspots of enhanced carbon export exhibiting C-rich/P-poor stoichiometry, preferentially inhabited by pico-eukaryotes and diatoms. Collectively, pico-phytoplankton contribute \~{}58\% of global NPP and \~{}46\% of global particulate organic carbon export below 100 meters through direct and ecosystem processing pathways. Biodiversity and cellular nutrient plasticity in marine pico-phytoplankton combine to increase their contributions to ocean productivity and the biological carbon pump. This article is protected by copyright. All rights reserved.},
	keywords = {carbon export, net primary productivity, pico-phytoplankton, rcc162, rcc1677, rcc212, rcc289, rcc296, rcc30, rcc438, variable C:P},
	issn = {1944-9224},
	doi = {10.1029/2023GB007756},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1029/2023GB007756},
	author = {Letscher, Robert T. and Moore, J. Keith and Martiny, Adam C. and Lomas, Michael W.}
}
@article {Grebert2018,
	title = {Light color acclimation is a key process in the global ocean distribution of Synechococcus cyanobacteria},
	journal = {Proceedings of the National Academy of Sciences},
	volume = {in press},
	year = {2018},
	note = {tex.mendeley-tags: 2018,RCC1016,RCC1017,RCC1018,RCC1020,RCC1023,RCC1027,RCC1030,RCC1031,RCC1084,RCC1085,RCC1086,RCC1087,RCC1096,RCC1097,RCC1649,RCC1661,RCC1688,RCC2032,RCC2033,RCC2035,RCC2319,RCC2366,RCC2368,RCC2369,RCC2370,RCC2372,RCC2373,RCC2374,RCC2375,RCC2376,RCC2378,RCC2379,RCC2380,RCC2381,RCC2382,RCC2383,RCC2384,RCC2385,RCC2415,RCC2432,RCC2433,RCC2434,RCC2435,RCC2436,RCC2437,RCC2438,RCC2457,RCC2525,RCC2526,RCC2527,RCC2528,RCC2529,RCC2530,RCC2532,RCC2533,RCC2534,RCC2536,RCC2553,RCC2554,RCC2555,RCC2556,RCC2567,RCC2568,RCC2569,RCC2570,RCC2571,RCC2673,RCC30,RCC3010,RCC3012,RCC3014,RCC307,RCC316,RCC318,RCC325,RCC326,RCC328,RCC37,RCC44,RCC46,RCC47,RCC515,RCC539,RCC542,RCC543,RCC550,RCC552,RCC553,RCC555,RCC556,RCC557,RCC558,RCC559,RCC62,RCC650,RCC66,RCC752,RCC753,RCC790,RCC791,RCC792,RCC793,RCC794,sbr?hyto?app},
	month = {feb},
	pages = {201717069},
	abstract = {Marine Synechococcus cyanobacteria are major contributors to global oceanic primary production and exhibit a unique diversity of photosynthetic pigments, allowing them to exploit a wide range of light niches. However, the relationship between pigment content and niche partitioning has remained largely undetermined so far due to the lack of a single-genetic marker resolving all pigment types (PT). Here, we developed a novel and robust method based on three distinct marker genes to estimate the relative abundance of all Synechococcus PTs from metagenomes. Analysis of the Tara Oceans dataset allowed us to unveil for the first time the global distribution of Synechococcus PTs and to decipher their realized environmental niches. Green-light specialists (PT 3a) dominated in warm, green equatorial waters, whereas blue-light specialists (PT 3c) were particularly abundant in oligotrophic areas. Type IV chromatic acclimaters (CA4-A/B), which are able to dynamically modify their light absorption properties to maximally absorb green or blue light, were unexpectedly the most abundant PT in our dataset and predominated at depth and high latitudes. We also identified local populations in which CA4 might be inactive due to the lack of specific CA4 genes, notably in warm high nutrient low chlorophyll areas. Major ecotypes within clades I-IV and CRD1 were preferentially associated with a particular PT, while others exhibited a wide range of PTs. Altogether, this study brings unprecedented insights into the ecology of Synechococcus PTs and highlights the complex interactions between vertical phylogeny, pigmentation and environmental parameters that shape Synechococcus populations and evolution.},
	keywords = {2018, RCC1016, RCC1017, RCC1018, RCC1020, RCC1023, RCC1027, RCC1030, RCC1031, rcc1084, RCC1085, RCC1086, RCC1087, RCC1096, RCC1097, RCC1649, RCC1661, RCC1688, RCC2032, RCC2033, RCC2035, RCC2319, RCC2366, RCC2368, RCC2369, RCC2370, RCC2372, RCC2373, RCC2374, RCC2375, RCC2376, RCC2378, RCC2379, rcc2380, RCC2381, rcc2382, RCC2383, RCC2384, RCC2385, RCC2415, RCC2432, RCC2433, RCC2434, RCC2435, RCC2436, RCC2437, RCC2438, RCC2457, RCC2525, RCC2526, RCC2527, RCC2528, RCC2529, RCC2530, RCC2532, RCC2533, RCC2534, RCC2536, RCC2553, RCC2554, RCC2555, RCC2556, RCC2567, RCC2568, RCC2569, RCC2570, RCC2571, RCC2673, rcc30, RCC3010, RCC3012, RCC3014, RCC307, RCC316, RCC318, RCC325, RCC326, RCC328, RCC37, RCC44, RCC46, RCC47, RCC515, rcc539, RCC542, RCC543, RCC550, RCC552, RCC553, rcc555, RCC556, RCC557, RCC558, RCC559, RCC62, RCC650, RCC66, rcc752, RCC753, RCC790, rcc791, RCC792, RCC793, RCC794, sbr?hyto?app},
	issn = {0027-8424},
	doi = {10.1073/pnas.1717069115},
	url = {http://www.pnas.org/lookup/doi/10.1073/pnas.1717069115},
	author = {Gr{\'e}bert, Th{\'e}ophile and Dor{\'e}, Hugo and Partensky, Fr{\'e}d{\'e}ric and Farrant, Gregory K. and Boss, Emmanuel S. and Picheral, Marc and Guidi, Lionel and Pesant, St{\'e}phane and Scanlan, David J. and Wincker, Patrick and Acinas, Silvia G. and Kehoe, David M. and Garczarek, Laurence}
}
@article {Stawiarski2016,
	title = {The physiological response of picophytoplankton to temperature and its model representation},
	journal = {Fronitiers in Marine Science},
	volume = {3},
	number = {164},
	year = {2016},
	note = {tex.mendeley-tags: rcc162,rcc1677,rcc212,rcc289,rcc296,rcc30,rcc361,rcc438,rcc503},
	pages = {1{\textendash}13},
	keywords = {chlorophyll a to carbon, chlorophyll a to carbon ratio, Eppley, frontiers in marine science, frontiersin, org, physiological parameterization, phytoplankton growth rates, phytoplankton size scaling, picoeukaryotes, picophytoplankton, ratio, rcc162, rcc1677, rcc212, rcc289, rcc296, rcc30, rcc361, rcc438, rcc503, temperature tolerance, www},
	issn = {2296-7745},
	doi = {10.3389/fmars.2016.00164},
	author = {Stawiarski, Beate and Buitenhuis, Erik T and Qu{\'e}r{\'e}, Corinne Le}
}
