TY - JOUR
T1 - Reorganization of Southern Ocean plankton ecosystem at the onset of Antarctic glaciation
AU - Houben, Alexander J P
AU - Bijl, Peter K
AU - Pross, Jörg
AU - Bohaty, Steven M
AU - Passchier, Sandra
AU - Stickley, Catherine E
AU - Röhl, Ursula
AU - Sugisaki, Saiko
AU - Tauxe, Lisa
AU - van de Flierdt, Tina
AU - Olney, Matthew
AU - Sangiorgi, Francesca
AU - Sluijs, Appy
AU - Escutia, Carlota
AU - Brinkhuis, Henk
AU - Dotti, Carlota Escutia
AU - Klaus, Adam
AU - Fehr, Annick
AU - Williams, Trevor
AU - Bendle, James A P
AU - Carr, Stephanie A
AU - Dunbar, Robert B
AU - Flores, José-Abel
AU - Gonzàlez, Jhon J
AU - Hayden, Travis G
AU - Iwai, Masao
AU - Jimenez-Espejo, Francisco J
AU - Katsuki, Kota
AU - Kong, Gee Soo
AU - McKay, Robert M
AU - Nakai, Mutsumi
AU - Pekar, Stephen F
AU - Riesselman, Christina
AU - Sakai, Toyosaburo
AU - Salzmann, Ulrich
AU - Shrivastava, Prakash K
AU - Tuo, Shouting
AU - Welsh, Kevin
AU - Yamane, Masako
AU - Expedition 318 Scientists
PY - 2013/4/19
Y1 - 2013/4/19
N2 - The circum-Antarctic Southern Ocean is an important region for global marine food webs and carbon cycling because of sea-ice formation and its unique plankton ecosystem. However, the mechanisms underlying the installation of this distinct ecosystem and the geological timing of its development remain unknown. Here, we show, on the basis of fossil marine dinoflagellate cyst records, that a major restructuring of the Southern Ocean plankton ecosystem occurred abruptly and concomitant with the first major Antarctic glaciation in the earliest Oligocene (~33.6 million years ago). This turnover marks a regime shift in zooplankton-phytoplankton interactions and community structure, which indicates the appearance of eutrophic and seasonally productive environments on the Antarctic margin. We conclude that earliest Oligocene cooling, ice-sheet expansion, and subsequent sea-ice formation were important drivers of biotic evolution in the Southern Ocean.
AB - The circum-Antarctic Southern Ocean is an important region for global marine food webs and carbon cycling because of sea-ice formation and its unique plankton ecosystem. However, the mechanisms underlying the installation of this distinct ecosystem and the geological timing of its development remain unknown. Here, we show, on the basis of fossil marine dinoflagellate cyst records, that a major restructuring of the Southern Ocean plankton ecosystem occurred abruptly and concomitant with the first major Antarctic glaciation in the earliest Oligocene (~33.6 million years ago). This turnover marks a regime shift in zooplankton-phytoplankton interactions and community structure, which indicates the appearance of eutrophic and seasonally productive environments on the Antarctic margin. We conclude that earliest Oligocene cooling, ice-sheet expansion, and subsequent sea-ice formation were important drivers of biotic evolution in the Southern Ocean.
KW - Adaptation, Physiological
KW - Animals
KW - Antarctic Regions
KW - Cold Temperature
KW - Dinoflagellida
KW - Ecosystem
KW - Fossils
KW - Ice Cover
KW - Oceans and Seas
KW - Phytoplankton
KW - Zooplankton
KW - Journal Article
KW - Research Support, Non-U.S. Gov't
KW - Research Support, U.S. Gov't, Non-P.H.S.
UR - https://www.scopus.com/pages/publications/84876331050
U2 - 10.1126/science.1223646
DO - 10.1126/science.1223646
M3 - Article
C2 - 23599491
SN - 0036-8075
VL - 340
SP - 341
EP - 344
JO - Science
JF - Science
IS - 6130
ER -