FN Archimer Export Format
PT J
TI Brownification reduces oxygen gross primary production and community respiration and changes the phytoplankton community composition: An in situ mesocosm experiment with high‐frequency sensor measurements in a North Atlantic bay
BT 
AF Soulié, Tanguy
   Stibor, Herwig
   Mas, Sébastien
   Braun, Benjamin
   Knechtel, Johanna
   Nejstgaard, Jens C.
   Sommer, Ulrich
   Vidussi, Francesca
   Mostajir, Behzad
AS 1:1;2:2;3:3;4:2;5:2;6:4;7:5;8:1;9:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 MARBEC (Marine Biodiversity, Exploitation and Conservation), Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
   Department Biologie, Aquatic Ecology Ludwig‐Maximilians‐Universität München Martinsried‐Planegg ,Germany
   MEDIMEER (Mediterranean Platform for Marine Ecosystems Experimental Research), OSU OREME, CNRS, Univ Montpellier, IRD, IRSTEA Sète ,France
   Dep. 3, Department of Plankton and Microbial Ecology Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Stechlin ,Germany
   GEOMAR Helmholtz‐Zentrum für Ozeanforschung Kiel Kiel ,Germany
C2 UNIV MONTPELLIER, FRANCE
   UNIV MUNCHEN, GERMANY
   UNIV MONTPELLIER, FRANCE
   LEIBNIZ INST FRESHWATER ECOL & INLAND FISHERIES, GERMANY
   IFM GEOMAR, GERMANY
UM MARBEC
IN WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-univ-france
IF 4.5
TC 12
UR https://archimer.ifremer.fr/doc/00751/86285/91617.pdf
   https://archimer.ifremer.fr/doc/00751/86285/91618.pdf
LA English
DT Article
AB In recent decades, the increase in terrestrial inputs to freshwater and coastal ecosystems, especially occurring at northern latitudes, has led to a process of water color darkening known as “brownification.” To assess how brownification affects plankton community composition and functioning in northern coastal areas, an in situ mesocosm experiment using a highly colored humic substance to simulate a brownification event was performed in a North Atlantic bay (Hopavågen, Norway) in August 2019. Manual sampling for analyses of nutrient concentrations, phytoplankton pigments and zooplankton abundances was combined with high-frequency (every 15 min) monitoring of key environmental variables to investigate the response of the plankton community in terms of oxygen metabolism and community composition. In response to brownification, the oxygen gross primary production (GPP) and community respiration (R) slowed down significantly, by almost one-third. However, GPP and R both decreased to the same extent; thus, the oxygen metabolic balance was not affected. Moreover, the chlorophyll-a concentration significantly decreased under brownification, by 9% on average, and the chemotaxonomic pigment composition of the phytoplankton changed, indicating their acclimation to the reduced light availability. In addition, brownification seemed to favor appendicularians, the dominant mesozooplankton group in the mesocosms, which potentially contributed to lowering the phytoplankton biomass. In conclusion, the results of this in situ mesocosm experiment suggest that brownification could induce significant changes in phytoplankton and zooplankton community composition and significantly alter the overall oxygen metabolism of plankton communities in a northern Atlantic bay. 
PY 2022
PD APR
SO Limnology And Oceanography
SN 0024-3590
PU Wiley
VL 67
IS 4
UT 000753551000001
BP 874
EP 887
DI 10.1002/lno.12041
ID 86285
ER

EF