Items where Author is "Baumann, Karl-Heinz"

Strack, T, Jonkers, L, Rillo, MC, Baumann, KH, Hillebrand, H and Kucera, M (2024) Coherent response of zoo‐ and phytoplankton assemblages to global warming since the Last Glacial Maximum. Global Ecology and Biogeography, 33(6). doi:10.1111/geb.13841

Cornuault, P, Westerhold, T, Pälike, H, Bickert, T, Baumann, KH and Kucera, M (2023) Nature and origin of variations in pelagic carbonate production in the tropical ocean since the mid-Miocene (ODP Site 927). Biogeosciences, 20(3). 597-618. doi:10.5194/bg-20-597-2023

Fischer, G, Romero, OE, Karstensen, J, Baumann, KH, Moradi, N, Iversen, MH, Ruhland, G, Klann, M and Körtzinger, A (2021) Seasonal flux patterns and carbon transport from low-oxygen eddies at the Cape Verde Ocean Observatory: lessons learned from a time series sediment trap study (2009–2016). Biogeosciences, 18(24). 6479-6500. doi:10.5194/bg-18-6479-2021

Cavaleiro, C, Voelker, AHL, Stoll, H, Baumann, KH and Kucera, M (2020) Coccolithophore productivity at the western Iberian Margin during the Middle Pleistocene (310–455 ka) – evidence from coccolith Sr∕Ca data. Climate of the Past, 16(6). 2017-2037. doi:10.5194/cp-16-2017-2020

Romero, OE, Baumann, KH, Zonneveld, KAF, Donner, B, Hefter, J, Hamady, B, Pospelova, V and Fischer, G (2020) Flux variability of phyto- and zooplankton communities in the Mauritanian coastal upwelling between 2003 and 2008. Biogeosciences, 17(1). 187-214. doi:10.5194/bg-17-187-2020

Saavedra-Pellitero, M, Baumann, KH, Fuertes, MÁ, Schulz, H, Marcon, Y, Vollmar, NM, Flores, JA and Lamy, F (2019) Calcification and latitudinal distribution of extant coccolithophores across the Drake Passage during late austral summer 2016. Biogeosciences, 16(19). 3679-3702. doi:10.5194/bg-16-3679-2019

Cavaleiro, C, Voelker, AHL, Stoll, H, Baumann, KH, Kulhanek, DK, Naafs, BDA, Stein, R, Grützner, J, Ventura, C and Kucera, M (2018) Insolation forcing of coccolithophore productivity in the North Atlantic during the Middle Pleistocene. Quaternary Science Reviews, 191. 318-336. doi:10.1016/j.quascirev.2018.05.027

Guerreiro, CV, Baumann, KH, Brummer, GJA, Fischer, G, Korte, LF, Merkel, U, Sá, C, de Stigter, H and Stuut, JBW (2017) Coccolithophore fluxes in the open tropical North Atlantic: influence of thermocline depth, Amazon water, and Saharan dust. Biogeosciences, 14(20). 4577-4599. doi:10.5194/bg-14-4577-2017

Tangunan, D, Baumann, KH, Pätzold, J, Henrich, R, Kucera, M, de Pol-Holz, R and Groeneveld, J (2017) Insolation forcing of coccolithophore productivity in the western tropical Indian Ocean over the last two glacial-interglacial cycles. Paleoceanography. doi:10.1002/2017PA003102

Saavedra-Pellitero, M, Baumann, KH, Ullermann, J and Lamy, F (2017) Marine Isotope Stage 11 in the Pacific sector of the Southern Ocean; a coccolithophore perspective. Quaternary Science Reviews, 158. 1-14. doi:10.1016/j.quascirev.2016.12.020

Fischer, G, Karstensen, J, Romero, OE, Baumann, KH, Donner, B, Hefter, J, Mollenhauer, G, Iversen, MH, Fiedler, B, Monteiro, I and Körtzinger, A (2016) Bathypelagic particle flux signatures from a suboxic eddy in the oligotrophic tropical North Atlantic: production, sedimentation and preservation. Biogeosciences, 13(11). 3203-3223. doi:10.5194/bg-13-3203-2016

Weiser, J, Baumann, KH, Hahn, A and Zabel, M (2016) Late Holocene paleoceanographic changes off south-western Africa as inferred from coccolithophore assemblages. Journal of Nannoplankton Research, 36(2). 161-171.

Saavedra-Pellitero, M and Baumann, KH (2015) Comparison of living and surface sediment coccolithophore assemblages in the Pacific sector of the Southern Ocean. Micropaleontology, 61(6). 507-520.

Stolz, K, Baumann, KH and Mersmeyer, H (2015) Extant coccolithophores from the western equatorial Indian Ocean off Tanzania and coccolith distribution in surface sediments. Micropaleontology, 61(6). 473-488.

Koebrich, MI, Baumann, KH and Fischer, G (2015) Seasonal and inter-annual dynamics of coccolithophore fluxes from the upwelling region off Cape Blanc, NW Africa. Journal of Micropalaeontology, 35. 103-116. doi:10.1144/jmpaleo2014-024

Rippert, N, Baumann, KH and Pätzold, J (2015) Thermocline fluctuations in the western tropical Indian Ocean during the past 35 ka. Journal of Quaternary Science, 30(3). 201-210. doi:10.1002/jqs.2767

Saavedra-Pellitero, M, Baumann, KH, Flores Villarejo, JA and Gersonde, R (2014) Biogeographic distribution of living coccolithophores in the Pacific sector of the Southern Ocean. Marine Micropaleontology, 109. 1-20. doi:10.1016/j.marmicro.2014.03.003

Berger, C, Meier, KJS, Kinkel, H and Baumann, KH (2014) Changes in calcification of coccoliths under stable atmospheric CO2. Biogeosciences, 11(4). 929-944. doi:10.5194/bg-11-929-2014

Horigome, MT, Ziveri, P, Grelaud, M, Baumann, KH, Marino, G and Mortyn, PG (2014) Environmental controls on the Emiliania huxleyi calcite mass. Biogeosciences, 11(8). 2295-2308. doi:10.5194/bg-11-2295-2014

Kuhnert, H, Kuhlmann, H, Mohtadi, M, Meggers, H, Baumann, KH and Pätzold, J (2014) Holocene tropical western Indian Ocean sea surface temperatures in covariation with climatic changes in the Indonesian region. Paleoceanography, 29(5). 423-437. doi:10.1002/2013PA002555

Henrich, R, Baumann, KH and Bickert, T (2014) New concepts on mass wasting phenomena at passive and active margins of the Alpine Tethys: Famous classical outcrops in the Berchtesgaden – Salzburg Alps revisited. Part A: Jurassic slide/debrite complexes triggered by syn-sedimentary block faulting. In: Krastel, S, Behrmann, JH, Völker, D, Stipp, M, Berndt, C, Urgeles, R, Chaytor, J, Huhn, K, Strasser, M and Harbitz, CB (eds.) Submarine Mass Movements and Their Consequences: 6th International Symposium. Advances in Natural and Technological Hazards Research, 37. Springer International Publishing, 661-674. doi:10.1007/978-3-319-00972-8_59

Henrich, R, Baumann, KH and Bickert, T (2014) New concepts on mass wasting phenomena at passive and active margins of the Alpine Tethys: Famous classical outcrops in the Berchtesgaden – Salzburg Alps revisited. Part B: Stacking patterns of slide/debrite complexes in an active lower Cretaceous foreland wedge-top basin. In: Krastel, S, Behrmann, JH, Völker, D, Stipp, M, Berndt, C, Urgeles, R, Chaytor, J, Huhn, K, Strasser, M and Harbitz, CB (eds.) Submarine Mass Movements and Their Consequences: 6th International Symposium. Advances in Natural and Technological Hazards Research, 37. Springer International Publishing, 675-683. doi:10.1007/978-3-319-00972-8_60

Saavedra-Pellitero, M, Baumann, KH, Hernández-Almeida, I, Flores, JA and Sierro, FJ (2013) Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates. Palaeogeography, Palaeoclimatology, Palaeoecology, 392. 534-545. doi:10.1016/j.palaeo.2013.10.010

Zonneveld, KAF, Baumann, KH, Clotten, C, Donner, B, Gray, D, Iwanczuk, N, Lombrock, J, Theodor, M, Valk, O and Versteegh, GJM (2013) Report and preliminary results of R/V POSEIDON cruise POS448. CAPRICCIO. Calabrian and Adriatic Past River Input and Carbon ConversIOn In the Eastern Mediterranean. Messina - Messina, 6 - 23 March 2013. Berichte, MARUM - Zentrum für Marine Umweltwissenschaften, Fachbereich Geowissenschaften, Universität Bremen, 296. urn:nbn:de:gbv:46-00103346-16

Preiß-Daimler, I, Baumann, KH and Henrich, R (2012) Carbonate budget mass estimates for Neogene discoasters from the Equatorial Atlantic (Ceara Rise: ODP Site 927). Journal of Micropalaeontology, 31. 169-178. doi:10.1144/0262-821X11-014

Bender, VB, Hanebuth, TJJ, Mena, A, Baumann, KH, Francés, G and von Dobeneck, T (2012) Control of sediment supply, palaeoceanography and morphology on late Quaternary sediment dynamics at the Galician continental slope. Geo-Marine Letters, 32(4). 313-335. doi:10.1007/s00367-012-0282-2

Saavedra-Pellitero, M, Flores Villarejo, JA, Baumann, KH, Boeckel, B and Sierro Sánchez, FJ (2011) Comparison of different preparation and analysis techniques for quantitative coocolith studies focusing on biogeographic patterns of species. Micropaleontology, 57(2). 139-161.

Kohn, M, Steinke, S, Baumann, KH, Donner, B, Meggers, H and Zonneveld, KAF (2011) Stable oxygen isotopes from the calcareous-walled dinoflagellate Thoracosphaera heimii as a proxy for changes in mixed layer temperatures off NW Africa during the last 45,000 yr. Palaeogeography, Palaeoclimatology, Palaeoecology, 302(3-4). 311-322. doi:10.1016/j.palaeo.2011.01.019

Stolz, K and Baumann, KH (2010) Changes in palaeoceanography and palaeoecology during Marine Isotope Stage (MIS) 5 in the eastern North Atlantic (ODP Site 980) deduced from calcareous nannoplankton observations. Palaeogeography, Palaeoclimatology, Palaeoecology, 292(1-2). 295-305. doi:10.1016/j.palaeo.2010.04.002

Saavedra-Pellitero, M, Flores, JA, Baumann, KH and Sierro, FJ (2010) Coccolith distribution patterns in surface sediments of Equatoral and Southeastern Pacific Ocean. Geobios, 43(1). 131-149. doi:10.1016/j.geobios.2009.09.004

Flores, JA, Colmenero-Hidalgo, E, Mejía Molina, AE, Baumann, KH, Henderiks, J, Larsson, K, Prabhu, CN, Sierro, FJ and Rodrigues, T (2010) Distribution of large Emiliania huxleyi in the Central and Northeast Atlantic as a tracer of surface ocean dynamics during the last 25,000 years. Marine Micropaleontology, 76(3-4). 53-66. doi:10.1016/j.marmicro.2010.05.001

Fink, C, Baumann, KH, Groeneveld, J and Steinke, S (2010) Strontium/Calcium ratio, carbon and oxygen stable isotopes in coccolith carbonate from different grain-size fractions in South Atlantic surface sediments. Geobios, 43(1). 151-164. doi:10.1016/j.geobios.2009.11.001

Boeckel, B and Baumann, KH (2008) Vertical and lateral variations in coccolithophore community structure across the subtropical frontal zone in the South Atlantic Ocean. Marine Micropaleontology, 67(3-4). 255-273. doi:10.1016/j.marmicro.2008.01.014

Ziveri, P, de Bernardi, B, Baumann, KH, Stoll, HM and Mortyn, PG (2007) Sinking of coccolith carbonate and potential contribution to organic carbon ballasting in the deep ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 54(5-7). 659-675. doi:10.1016/j.dsr2.2007.01.006

Zonneveld, KAF, Mackensen, A and Baumann, KH (2007) Stable oxygen isotopes of Thoracosphaera heimii (Dinophyceae) in relationship to temperature; a culture experiment. Marine Micropaleontology, 64(1-2). 80-90. doi:10.1016/j.marmicro.2007.03.002

Boeckel, B, Baumann, KH, Henrich, R and Kinkel, H (2006) Distribution of coccoliths in South Atlantic and Southern Ocean surface sediments in relation to environmental gradients. Deep Sea Research Part I: Oceanographic Research Papers, 53(6). 1073-1099. doi:10.1016/j.dsr.2005.11.006

Krammer, R, Baumann, KH and Henrich, R (2006) Middle to Late Miocene fluctuations in the incipient Benguela Upwelling System revealed by calcareous nannofossil assemblages (ODP Site 1085A). Palaeogeography, Palaeoclimatology, Palaeoecology, 230(3-4). 319-334. doi:10.1016/j.palaeo.2005.07.022

Frenz, M, Baumann, KH, Boeckel, B, Höppner, R and Henrich, R (2005) Quantification of foraminifer and coccolith carbonate in South Atlantic surface sediments by means of carbonate grain-size distributions. Journal of Sedimentary Research, 75(3). 446-475. doi:10.2110/jsr.2005.036

Henrich, R, Baumann, KH, Gerhardt, S, Gröger, M and Volbers, ANA (2004) Carbonate preservation in deep and intermediate water masses in the South Atlantic: evaluation and geological record (a review). In: Wefer, G, Mulitza, S and Ratmeyer, V (eds.) The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems. Springer, Berlin, Heidelberg, New York, 645-670. doi:10.1007/978-3-642-18917-3_28

Baumann, KH, Boeckel, B and Frenz, M (2004) Coccolith contribution to South Atlantic carbonate sedimentation. In: Thierstein, HR and Young, JR (eds.) Coccolithophores From Molecular Processes to Global Impact. Springer. Springer, Berlin, Heidelberg, New York, 368-402.

Boeckel, B and Baumann, KH (2004) Distribution of coccoliths in surface sediments of the south-eastern South Atlantic Ocean: ecology, preservation and carbonate contribution. Marine Micropaleontology, 51(3-4). 301-320. doi:10.1016/j.marmicro.2004.01.001

Baumann, KH and Freitag, T (2004) Pleistocene fluctuations in the northern Benguela Current system as revealed by coccolith assemblages. Marine Micropaleontology, 52(1-4). 195-215. doi:10.1016/j.marmicro.2004.04.011

Vink, A, Baumann, KH, Boeckel, B, Esper, O, Kinkel, H, Volbers, ANA, Willems, H and Zonneveld, KAF (2003) Coccolithophorid and dinoflagellate synecology in the South and Equatorial Atlantic: Improving the palaeoecological significance of phytoplanktonic microfossils. In: Wefer, G, Mulitza, S and Ratmeyer, V (eds.) The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems. Springer, Berlin, Heidelberg, New York, 101-120. doi:10.1007/978-3-642-18917-3_6

Sprengel, C, Baumann, KH, Henderiks, J, Henrich, R and Neuer, S (2002) Modern coccolithophore and carbonate sedimentation along a productivity gradient in the Canary Islands region: seasonal export production and surface accumulation rates. Deep Sea Research Part II: Topical Studies in Oceanography, 49(17). 3577-3598. doi:10.1016/S0967-0645(02)00099-1