Long- and short-term photoacclimation in epipsammon from non-tidal coastal shallows compared to epipelon from intertidal mudflat

Filip Pniewski , Pierre Richard , Adam Latała , Gerard Blanchard

Abstract

Long- and short-term photoacclimation and their interaction were determined in two types of microphytobenthos assemblages, i.e. epipelon from an intertidal mudflat and epipsammon from non-tidal sandy coastal shallows collected during summer and autumn months. Microphytobenthos photophysiology was assessed from steady-state light curve (SSLC) and rapid light-response curves (RLC) of variable chlorophyll fluorescence. The epipelon was low light acclimated, whereas in the epipsammon high light acclimation was observed. The epipelon turned out to be more susceptible to high light and in autumn a dear down turn in the relative electron transport rates was recorded. Long-term photoacclimation strongly affected both microphytobenthos types' short-term light responses. The epipelon acclimated to high ambient light intensities through the decreased light absorption and energy dissipation. The epipsammon, on the other hand, developed physiological flexibility allowing efficient use of the absorbed light and thus providing protection against higher irradiance.
Author Filip Pniewski (FOG / IO / DMEF)
Filip Pniewski,,
- Division of Marine Ecosystems Functioning
, Pierre Richard
Pierre Richard,,
-
, Adam Latała (FOG / IO / DMEF)
Adam Latała,,
- Division of Marine Ecosystems Functioning
, Gerard Blanchard
Gerard Blanchard,,
-
Journal seriesJournal of Sea Research, ISSN 1385-1101, (A 30 pkt)
Issue year2018
Vol136
Pages1-9
Publication size in sheets0.5
Keywords in Englishphotoacclimation, microphytobenthos, Chlorophyll fluorescence, rapid light curves, non-photochemical quenching, Baltic Sea
ASJC Classification1104 Aquatic Science; 1105 Ecology, Evolution, Behavior and Systematics; 1910 Oceanography
DOIDOI:10.1016/j.seares.2018.03.001
URL https://doi.org/10.1016/j.seares.2018.03.001
Languageen angielski
Score (nominal)30
ScoreMinisterial score = 30.0, 04-04-2019, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 04-04-2019, ArticleFromJournal
Publication indicators WoS Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.931; WoS Impact Factor: 2017 = 1.729 (2) - 2017=1.986 (5)
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