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AG Mikropaläontologie - Paläozeanographie
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PFR²
Planktonic Foraminifera Ribosomal Reference Database
The database offers access to planktonic Foraminifera 18S ribosomal DNA sequence library with a curated taxonomy at the morphological and molecular level. These sequences have been obtained through single-cell DNA extraction from specimens, identified taxonomically by characters of their calcite shells. The vast majority of the sequences cover the fragment of the gene between the helices 32 and 50. The aim of PFR² is to provide a comprehensive and high quality free resource to study the ecology and biogeography of planktonic foraminifera as a model system for evolution in the pelagic realm. The first version of PFR² combines sequences available on Genbank with new data generated across several laboratories. The compilation was facilitated through the efforts of the SCOR/IGBP Working Group 138 “Modern planktonic foraminifera and ocean changes”. A strict control of the quality of the sequences has been applied and the taxonomy has been curated to achieve full internal consistency. PFR² can be used to annotate environmental sequences and also to design probes and primers.
Forcens
A curated database of planktonic foraminifera census counts in marine surface sediment samples
Census counts of marine microfossils in surface sediments represent an invaluable resource for paleoceanography and for the investigation of macroecological processes. A prerequisite for such applications is the provision of data syntheses for individual microfossil groups. Specific to such syntheses is the necessity of taxonomical harmonisation across the constituent datasets, coupled with dereplication of previous compilations. Both of these aspects require expert knowledge, but with increasing number of records involved in such syntheses, the application of expert knowledge via manual curation is not feasible. Here we present a synthesis of planktonic foraminifera census counts in surface sediment samples, which is taxonomically harmonised, dereplicated and treated for numerical and other inconsistencies. The data treatment is implemented as an objective and largely automated pipeline, allowing us to reduce the initial 6,984 records to 4,205 counts from unique sites and informative technical or true replicates. We provide the final product and document the procedure, which can be easily adopted for other microfossil data syntheses.
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Eine Sammlung von 3D-Modellen planktischer Foraminiferen auf Sketchfab. Hier nur vier Beispiele:
veröffentlichte Fahrtberichte
Kucera, M and cruise participants (2019) Scales of population dynamics, ecology and diversity of planktonic foraminifera and their relationship to particle flux in the eastern tropical Atlantic, Cruise No. M140, 11.8.2017 - 5.9.2017, Mindelo (Cabo Verde) - Las Palmas (Spain), FORAMFLUX https://doi.org/10.2312/cr_m140
Zonneveld, KAF and cruise participants (2019) A deglacial record of carbon release from thawing permafrost of the European tundra (EUROTHAW), Marine carbon production, export, relocation and degradation under varying ocean redox conditions off NW Africa (MACPEI), Cruise No. MSM 79, October 29 - November 9 - December 3, 2018, Edinburgh (UK) - Las Palmas (Spain) - Mindelo (Cape Verde) https://doi.org/10.2312/cr_msm79
Zonneveld, KAF and cruise participants (2017) Aerobic Degradation of particulate Organic Matter and benthic microbial turnover rates reflecting ocean redox conditions off NW Africa (ADOMIS) - Cruise No. MSM48 - November 2 - November 25, 2015 - Ponta Delgada (Portugal) - Las Palmas (Spain) https://doi.org/10.2312/cr_msm48
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
Siccha, M and cruise participants (2013) SpaDE- Spatial scaling of diversity and ecology of planktonic foraminifera in the oligotrophic gyre of the North Atlantic - Cruise No. M113/2 - January 24 - February 9, 2015 - Ponta Delgada (Portugal) - Kingston (Jamaica) https://doi.org/10.2312/cr_m113_2
Zonneveld, KAF and cruise participants (2008) Report and preliminary results of R/V POSEIDON Cruise P339, Piräus - Messina, 16 June - 2 July 2006. CAPPUCCINO - Calabrian and Adriatic palaeoproductivity and climatic variability in the last two millenia. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 268. Department of Geosciences, Bremen University. urn:nbn:de:gbv:46-ep000106569