Northeast Pacific 31,000 Year Fossil Diatom Assemblage Data Lopes, C.; Kucera, M.; Mix, A.C. Lopes, C. Kucera, M. Mix, A.C. carbon cycle earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,used for) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Epithemia turgida (Her.) Kutz) earth science/paleoclimate/instrumental (primary productivity,sea water,null,gram per square centimeter per year,null,instrumental,null,null,N,Observed annual Primary Productivity) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Lioloma pacificum (Cupp) Hasle) earth science/paleoclimate/paleoceanography (identified diatom,null,communality,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Bacteriastrum spp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus decrescens Grunow) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus marginatus Ehrenberg) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira anguste-lineata (A. Schmi.) Fryxell & Hasle) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira cf trifulta *) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira sp2*) earth science/paleoclimate/paleoceanography (diatom morphology-based index,null,one standard deviation,percent,null,paleoceanography,null,null,N,mean proportion of large diatoms) earth science/paleoclimate/paleoceanography (sample identification,null,null,null,null,paleoceanography,null,null,C,core name) earth science/paleoclimate/paleoceanography (factor score,null,null,dimensionless,null,paleoceanography,null,null,N,factor 2) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Gomphonema constrictum Ehrenberg) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Aulacoseira islandica (O. Mull.) Simonsen) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Rhizosolenia hebetata forma hebetatata Bailey) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Rhizosolenia styliformis Brightwell) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Cyclotella ocellata Pantocsek) earth science/paleoclimate/climate reconstructions|paleoceanography (primary productivity,diatom assemblage,null,gram per square meter per year,annual,climate reconstructions|paleoceanography,null,null,N,Estimated Annual Primary Productivity from Maximum Likelihood) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Lioloma elongatum (Grunow) Hasle) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Sum of species>2%) earth science/paleoclimate/paleoceanography (total diatoms,null,null,count,null,paleoceanography,null,null,N,Number of frustles counted (if multiplied by % species keep no decimal places)) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Aulacosira italica (Ehr.) Kutzing) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Cyclotella litoralis Lange & Syvertsen) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira eccentrica (Ehr.) Cleve) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Delphineis surilella (Ehr.) Andrews) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Fragilaria brevistriata Grunow) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Fragilariopsis doliolus (Wallich) Medin & Sims) earth science/paleoclimate/climate reconstructions|paleoceanography (primary productivity,diatom assemblage,null,gram per square meter per year,annual,climate reconstructions|paleoceanography,null,null,N,Estimated Annual Primary Productivity from Artificial Neural Networks) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Lioloma spp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Raphoneis amphiceros Ehrenberg (Gregory) Grunow) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Aulacoseira spp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Chaetoceros resting spores Ehrenberg) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira spp.*) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Fragilaria constricta Ehrenberg) earth science/paleoclimate/paleoceanography (age,null,null,calendar year before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (diatom morphology-based index,null,null,percent,null,paleoceanography,null,null,N,mean proportion of large diatoms) earth science/paleoclimate/paleoceanography (factor score,null,null,dimensionless,null,paleoceanography,null,null,N,factor 3) earth science/paleoclimate/paleoceanography (factor score,null,null,dimensionless,null,paleoceanography,null,null,N,factor 4) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Actinocyclus normanii (Greg.) Husted) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Leptocylindrus resting spores Cleve) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Stephanopyxis turris (Arnot in Greville) Ralfs in Pritchard) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira leptotus Hasle & Fryxell) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira oestrupii (Ostenf.) Hasle) earth science/paleoclimate/climate reconstructions|paleoceanography (depth,null,null,meter,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (total freshwater diatoms,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|instrumental|paleoceanography (latitude,null,null,degree north,null,climate reconstructions|instrumental|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassionema nitzschioides Grunow) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Aulacoseira granulata (Thwaites) Crawford/ (Her.) Thwaites) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Cyclotella spp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Cyclotella striata (Kutz.) Grunow) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Hemidiscus cuneiformis Wallich) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Melosira ambigua (Grunow) Simonsen) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Odontella aurita (Lyngbye) C. A. Agardh) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira lineata Jouse) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Fragilaria construens (Ehr.) Grunow) earth science/paleoclimate/climate reconstructions|instrumental|paleoceanography (longitude,null,null,degree east,null,climate reconstructions|instrumental|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,Presence of Chaetoceros vegetative cells remains) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,Presence of fragile diatom species: Bacteriastrum; Asteromphalus; Paralia sulcata) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Nitzschia gp bicapitata) earth science/paleoclimate/paleoceanography (factor score,null,null,dimensionless,null,paleoceanography,null,null,N,factor 1 (upwelling factor)) earth science/paleoclimate/climate reconstructions|paleoceanography (depth,null,null,centimeter,null,climate reconstructions|paleoceanography,null,null,N,Depth composite) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Paralia sulcata (Ehr.) Cleve) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Roperia tesselata (Roper) Grunow ex Van Heurck) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira pacifica Gran & Angst) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira sp6*) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Cocconeis placentula Ehrenberg) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Cocconeis sp1*) earth science/paleoclimate/climate reconstructions|instrumental|paleoceanography (collection water depth,null,null,meter,null,climate reconstructions|instrumental|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,Presence of silicoflagelates) earth science/paleoclimate/climate reconstructions|paleoceanography (primary productivity,diatom assemblage,null,gram per square meter per year,annual,climate reconstructions|paleoceanography,null,null,N,Residuals estimation for Annual Primary Productivity from Maximum Likelihood) earth science/paleoclimate/climate reconstructions|paleoceanography (primary productivity,diatom assemblage,null,gram per square meter per year,annual,climate reconstructions|paleoceanography,null,null,N,Residuals estimation for Annual Primary Productivity from Artificial Neural Networks) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Neodenticula seminae (Simonsen & Kanaya) Akiba & Yanagisawa) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Actinocyclus curvatulus Janisch) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Actinoptychus senarius (Ehr.) Ehrenberg) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Stephanodiscus rotula (forma minutula) (Kutz) Grunow) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus radiatus Ehrenberg/(Schmidt)) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira allenii Takano) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiossira sp1*) earth science/paleoclimate/paleocean (MD02-1499>LATITUDE 41.683>LONGITUDE -124.94) (Northeast Pacific>LATITUDE >LONGITUDE ) (W8709A-13PC>LATITUDE 42.12>LONGITUDE -125.75) (ODP 1019>LATITUDE 41.68194>LONGITUDE -124.93) Understanding responses of oceanic primary productivity, carbon export, and burial to climate change is essential for model-based projection of biological feedbacks in a high-CO2 world. Here we compare estimates of productivity based on the composition of fossil diatom floras with organic carbon burial off Oregon in the Northeast Pacific across a large climatic transition at the last glacial termination. Although estimated primary productivity was highest during the Last Glacial Maximum, carbon burial was lowest, reflecting reduced preservation linked to low sedimentation rates. A diatom size index further points to a glacial decrease (and deglacial increase) in the fraction of fixed carbon that was exported, inferred to reflect expansion, and contraction, of subpolar ecosystems that today favor smaller plankton. Thus, in contrast to models that link remineralization of carbon to temperature, in the Northeast Pacific, we find dominant ecosystem and sea floor control such that intervals of warming climate had more efficient carbon export and higher carbon burial despite falling primary productivity. STUDY NOTES: Surface and downcore diatom assemblage data from cores in the Northeast Pacific off Oregon, and estimation of Primary Production Export using Diatom based Tranfer Functions. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lopes, C. Investigator : Kucera, M. Investigator : Mix, A.C. 2017-05-29 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22210 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015w8709a-13pc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015modern.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015md02-1499.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015odp1019.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015w8709a-13pc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015modern.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015md02-1499.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015odp1019.txt English https://www.ncdc.noaa.gov/paleo/study/22210 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015w8709a-13pc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015modern.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015md02-1499.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lopes2015/lopes2015odp1019.txt Cristina Lopes, Michal Kucera, and Alan C. Mix2015Climate change decouples oceanic primary and export productivity and organic carbon burialProceedings of the National Academy of Sciences1122332-33510.1073/pnas.1410480111http://www.pnas.org/content/112/2/332 START YEAR: 30956 cal yr BP * END YEAR: 0 cal yr BP -136 30 -121 45