Climatically driven macroevolutionary patterns in the size of marine diatoms over the Cenozoic.

@article{citeulike:295968, abstract = {Numerous taxonomic groups exhibit an evolutionary trajectory in cell or body size. The size structure of marine phytoplankton communities strongly affects food web structure and organic carbon export into the ocean interior, yet macroevolutionary patterns in the size structure of phytoplankton communities have not been previously investigated. We constructed a database of the size of the silica frustule of the dominant fossilized marine planktonic diatom species over the Cenozoic. We found that the minimum and maximum sizes of the diatom frustule have expanded in concert with increasing species diversity. In contrast, the mean area of the diatom frustule is highly correlated with oceanic temperature gradients inferred from the delta18O of foraminiferal calcite, consistent with the hypothesis that climatically induced changes in oceanic mixing have altered nutrient availability in the euphotic zone and driven macroevolutionary shifts in the size of marine pelagic diatoms through the Cenozoic.}, address = {Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, 71 Dudley Road, New Brunswick, NJ 08901, USA. zfinkel@mta.ca}, author = {Finkel, Z. V. and Katz, M. E. and Wright, J. D. and Schofield, O. M. and Falkowski, P. G. }, citeulike-article-id = {295968}, doi = {http://dx.doi.org/10.1073/pnas.0409907102}, issn = {0027-8424}, journal = {Proc Natl Acad Sci U S A}, keywords = {05matheco14, biological\_pump, carbon\_cycle, cat\_envorinmental\_sciences, cell\_size, climate\_change, method\_analysis, phytoplankton}, month = {June}, number = {25}, pages = {8927--8932}, posted-at = {2005-08-17 09:11:52}, priority = {0}, title = {Climatically driven macroevolutionary patterns in the size of marine diatoms over the Cenozoic.}, url = {http://dx.doi.org/10.1073/pnas.0409907102}, volume = {102}, year = {2005} }

TY - JOUR ID - citeulike:295968 L3 - citeulike-article-id:295968 TI - Climatically driven macroevolutionary patterns in the size of marine diatoms over the Cenozoic. JF - Proc Natl Acad Sci U S A VL - 102 IS - 25 SP - 8927 EP - 8932 AD - Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, 71 Dudley Road, New Brunswick, NJ 08901, USA. zfinkel@mta.ca SN - 0027-8424 N2 - Numerous taxonomic groups exhibit an evolutionary trajectory in cell or body size. The size structure of marine phytoplankton communities strongly affects food web structure and organic carbon export into the ocean interior, yet macroevolutionary patterns in the size structure of phytoplankton communities have not been previously investigated. We constructed a database of the size of the silica frustule of the dominant fossilized marine planktonic diatom species over the Cenozoic. We found that the minimum and maximum sizes of the diatom frustule have expanded in concert with increasing species diversity. In contrast, the mean area of the diatom frustule is highly correlated with oceanic temperature gradients inferred from the delta18O of foraminiferal calcite, consistent with the hypothesis that climatically induced changes in oceanic mixing have altered nutrient availability in the euphotic zone and driven macroevolutionary shifts in the size of marine pelagic diatoms through the Cenozoic. KW - 05matheco14 KW - biological_pump KW - carbon_cycle KW - cat_envorinmental_sciences KW - cell_size KW - climate_change KW - method_analysis KW - phytoplankton AU - Finkel, ZV AU - Katz, ME AU - Wright, JD AU - Schofield, OM AU - Falkowski, PG PY - 2005/06/21/ UR - http://dx.doi.org/10.1073/pnas.0409907102 ER -