Article (Scientific journals)
How phosphorus limitation can control climate-active gas sources and sinks
Gypens, Nathalie; Borges, Alberto; Ghyoot, Caroline
2017In Journal of Marine Systems, 170 (-), p. 42–49
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Abstract :
[en] Since the 1950's, anthropogenic activities have increased nutrient river loads to European coastal areas. Subsequent implementation of nutrient reduction policies have led to considerably reduction of phosphorus (P) loads from the mid-1980's, while nitrogen (N) loads were maintained, inducing a P limitation of phytoplankton growth in many eutrophied coastal areas such as the Southern Bight f the North Sea (SBNS). When dissolved inorganic phosphorus (DIP) is limiting, most phytoplankton organisms are able to indirectly acquire P from dissolved organic P (DOP). We investigate the impact of DOP use on phytoplankton production and atmospheric fluxes of CO2 and dimethylsulfide (DMS) in the SBNS from 1951 to 2007 using an extended version of the RMIRO-BIOGAS model. This model includes a description of the ability of phytoplankton organisms to use DOP as a source of P. Results show that primary production can increase up to 30% due to DOP uptake under limiting DIP conditions. Consequently, simulated DMS emissions also increase proportionally while CO2 emissions to the atmosphere decrease, relative to the reference simulation without DOP uptake
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Gypens, Nathalie
Borges, Alberto  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (AGO)
Ghyoot, Caroline
Language :
English
Title :
How phosphorus limitation can control climate-active gas sources and sinks
Publication date :
10 February 2017
Journal title :
Journal of Marine Systems
ISSN :
0924-7963
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
170
Issue :
-
Pages :
42–49
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 February 2017

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