plankton in a changing climate: coastal and polar cases study...plankton in a changing climate:...
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![Page 1: Plankton in a changing climate: coastal and polar cases study...Plankton in a changing climate: coastal and polar cases study Hongjun SONG (The First Institute of Oceanography, SOA,](https://reader034.vdocuments.site/reader034/viewer/2022051806/60029ffba013414c7a7c7619/html5/thumbnails/1.jpg)
2014 Annual Meeting
S7: Recent assessments of climate change impacts on marine ecosystems
Plankton in a changing climate: coastal and polar cases study
Hongjun SONG(The First Institute of Oceanography, SOA, Qingdao, China,
E-mail: [email protected])
October 23, 2014, Yeosu
Rubao Ji(Woods Hole Oceanographic Institution, Woods Hole, MA, USA)
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Outline
Background
Coastal Case
Polar Case
Future Work
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BackgroundBackground
The climate is changing!
Global Warming
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Climate drives sea change!
(Greene & Pershing, 2007)
Arctic Ocean circulation
(Townsend et al., 2006)
Northwest Atlantic
Gulf of Maine
(Greene & Pershing, 2007)
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(Greene & Pershing, 2007)
Gulf of Maine
Climate change
Hydrodynamics
Phytoplankton
Zooplankton
Warming, freshening, NAO, El Niño, etc…
T/S, mixing/stratification, circulation
BloomsPrimary productivitySpecies composition
Botto
m-u
p eff
ects
Climate change
Hydrodynamics
Phytoplankton
Zooplankton
Warming, freshening, NAO, El Niño, etc…
T/S, mixing/stratification, circulation
BloomsPrimary productivitySpecies composition
Botto
m-u
p eff
ects
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(Doney, Nature, 2006)
sketch map
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www.marineodyssey.co.uk
Phytoplankton
Photo of a live marine plankton sample (x400 magnification). Photo L. Armand.
Phytoplankton bloom
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Zooplankton
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Conceptual model (temperate region):
Coastal CasesCoastal Cases
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Bloom timing inter-annual variability
(Ji et al., 2007)
Remote sensing
(Chiba & Sasaoka, 2007)
Gaussian curve fit Gaussian curve fit
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Spatial distribution
(Song et al., JPR, 2010)
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salinity
temperature
wind
Blo
om T
imin
g
Spring Fall
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Ecosystem modeling
Ecosystem model structure (Stock & Dunne, 2010).
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Single factor experiments
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Inter-annual variability (Song et al., MEPS, 2011)
timing
magnitude
1984-2007
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SPB timing & chlorophyll, primary production, meso-zooplankton production, particle export flux
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Energy flow
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Yellow SeaYellow Sea
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Long-term variability
(Lin et al., 2005, JMS)
SST SSS
DIN-0mPO4-P-0m
36oN transect
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SeaWiFS Climatology data
Phytoplankton dynamics in central YS
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(Dong et al., 2010)
Jellyfish Blooms
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Phytoplankton Diversity & YS Cold Water Mass
Relatively lower
diversity in the
central part of
YSCWM;
Simple
phytoplankton
community.
(Aug. 2011)
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Zooplankton distribution & Yellow Sea Warm Current
Low zooplankton biomass in
the YSWC area;
YSWC advected tropical species of
zooplankton into the southern YS
(Jan. 2007)
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zooplankton biomass in SYS
Long-term variability
chlorophyll a concentrations
(Fu et al., 2012) (Liu et al., 2012)
Climate ChangeClimate Change PlanktonPlankton
Inter-annual variability
Ecosystem modeling
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Growth season start Growth season end
Ice retreating Ice advancing
Polar CasePolar Case
Arctic Ocean
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(Wassmann, 2011)
Seasonality in seasonal ice zone (SIZ)
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Climate changeClimate change
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Satellite data
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Conceptual view
(Ji et al., GCB, 2013)
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On-going Work
Yellow Sea:
the linkage between long term variations of environmental factors and the plankton dynamics; inter-annual or decadal scale modeling about the YS ecosystem (focusing on the physical-biological interaction) would contribute to explain the detailed plankton phenology.
Arctic Ocean:
how of the primary production phenology affect the zooplankton (e.g. copepod biogeography)?
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