cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/aumn2w
title: Planktic foraminifera of sediment core GeoB1710-3

description: In this study, we test various parameters in deep-sea sediments (bulk sediment parameters and changes in microfossil abundances and preservation character) which are generally accepted as indicators of calcium carbonate dissolution. We investigate sediment material from station GeoB 1710-3 in the northern Cape Basin (eastern South Atlantic), 280 km away from the Namibian coast, well outside today's coastal upwelling. As northern Benguela upwelling cells were displaced westward and periodically preceded the core location during the past 245 kyr (Volbers et al., submitted), GeoB 1710-3 sediments reflect these changes in upwelling productivity. Results of the most commonly used calcium carbonate dissolution proxies do not only monitor dissolution within these calcareous sediments but also reflect changes in upwelling intensity. Accordingly, these conventional proxy parameters misrepresent, to some extent, the extent of calcium carbonate dissolution. These results were verified by an independent dissolution proxy, the Globigerina bulloides dissolution index (BDX') (Volbers and Henrich, 2002, doi:10.1016/S0025-3227(02)00333-X). The BDX' is based on scanning electronic microscope ultrastructural investigation of planktonic foraminiferal tests and indicates persistent good carbonate preservation throughout the past 245 kyr, with the exception of one pronounced dissolution event at early oxygen isotopic stage (OIS) 6. The early OIS 6 is characterized by calcium carbonate contents, sand contents, and planktonic foraminiferal concentrations all at their lowest levels for the last 245 kyr. At the same time, the ratio of radiolarian to planktonic foraminiferal abundances and the ratio of benthic to planktonic foraminiferal tests are strongly increased, as are the rain ratio, the fragmentation index, and the BDX'. The sedimentary calcite lysocline rose above the core position and GeoB 1710-3 sediments were heavily altered, as attested to by the unusual accumulation of pellets, aggregates, sponge spicules, radiolaria, benthic foraminifera, and planktonic foraminiferal assemblages. Solely the early OIS 6 dissolution event altered the coarse fraction intensely, and is therefore reflected by all conventional calcium carbonate preservation proxies and the BDX'. We attribute the more than 1000 m rise of the sedimentary calcite lysocline to the combination of two processes: (a) a prominent change in the deep-water mass distribution within the South Atlantic and (b) intense degradation of organic material within the sediment (preserved as maximum total organic carbon content) creating microenvironments favorable for calcium carbonate dissolution.
DOI: 10.15468/5ebz2m
title: (Table 1) Occurrence of Oligocene to Pleistocene benthic foraminifers in ODP Hole 121-754A
DOI: 10.15468/3ndjhj
title: Meiofauna abundances at the Arctic Håkon Mosby Mud Volcano (HMMV) of sediment core PS64/312-1
DOI: 10.15468/8gktz9
title: (Table 2) Occurrence of Oligocene to Pleistocene benthic foraminifers in ODP Site 121-756
DOI: 10.15468/4n5cqx
title: (Table 1.2.1.1) Abundance of sympagic meiofauna of sea-ice core PS69/554-2
DOI: 10.15468/6na4xq
title: (Appendix B) Abundance of organic-walled dinoflagellate cysts of sediment core GeoB1105-4
DOI: 10.15468/34txt9
title: Ice and animal observations during POLARSTERN cruise ANT-X/6
DOI: 10.15468/rsnwxw
title: (Table 2) Range chart of calcareous nannofossils in ODP Hole 122-762C
DOI: 10.15468/gu88ad
title: Plasm bearing foraminifera counts from multinet M31/2_MSN895
DOI: 10.15468/h7m354
title: CaCO3, biogenic opal, TOC, and microfossil observations of sediment core MR06-04_PC23A
DOI: 10.15468/mbgpsd
title: Coccolith counts of multinet M32/5_MSN971
DOI: 10.15468/4246zg
title: (Table 3) Distribution of Upper Cretaceous agglutinated benthic foraminifers in ODP Hole 129-800A
DOI: 10.15468/fy6pvx
title: (Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic

description: The relative contribution of regional contamination versus dietary differences to geographic variation in polar bear (Ursus maritimus) contaminant levels is unknown. Dietary variation between Alaska, Canada, East Greenland, and Svalbard subpopulations was assessed by muscle nitrogen and carbon stable isotope (d15N, d13C) and adipose fatty acid (FA) signatures relative to their main prey (ringed seals). Western and southern Hudson Bay signatures were characterized by depleted d15N and d13C, lower proportions of C20 and C22 monounsaturated FAs and higher proportions of C18 and longer chain polyunsaturated FAs. East Greenland and Svalbard signatures were reversed relative to Hudson Bay. Alaskan and Canadian Arctic signatures were intermediate. Between-subpopulation dietary differences predominated over interannual, seasonal, sex, or age variation. Among various brominated and chlorinated contaminants, diet signatures significantly explained variation in adipose levels of polybrominated diphenyl ether (PBDE) flame retardants (14-15%) and legacy PCBs (18-21%). However, dietary influence was contaminant class-specific, since only low or nonsignificant proportions of variation in organochlorine pesticide (e.g., chlordane) levels were explained by diet. Hudson Bay diet signatures were associated with lower PCB and PBDE levels, whereas East Greenland and Svalbard signatures were associated with higher levels. Understanding diet/food web factors is important to accurately interpret contaminant trends, particularly in a changing Arctic.
DOI: 10.15468/yfg4e7
title: Abundance of non-diatom phytoplankton measured on water bottle samples at station PS58/108-1
DOI: 10.15468/nqsz46
title: Meiofauna abundance in sediment core 13077-058
DOI: 10.15468/w95z23
title: Distribution of planktonic foraminifera in water profiles from the North Atlantic Ocean
DOI: 10.15468/smaj8z
title: (Appendix B) Benthic foraminifera in DSDP Site 89-586 sediments
DOI: 10.15468/kyfkh5
title: Total foraminifera counts of multinet POS231/3_MSN1334
DOI: 10.15468/j8b76d
title: Total living benthic foraminifera at station M33/1_MC-30 (SAST), size fraction &gt;30 µm
DOI: 10.15468/eaahxt
title: (Figure 4) Distribution of dinoflagellates in ODP Hole 129-802A
DOI: 10.15468/skccbn
title: (Table 3) Distribution of Cretaceous nannofossils at DSDP Hole 79-547A
DOI: 10.15468/zfpbuj
title: Range table from benthic foraminifers in ODP Hole 149-901A
DOI: 10.15468/b697dy
title: Nannofossil abundance of Hole 29-282
DOI: 10.15468/mfgwua
title: Microzooplankton abundance and biomass at station NBP97-03-06-8
DOI: 10.15468/8xjhne
title: (Table 3c) Foraminiferal distribution chart of ODP Hole 122-762C
DOI: 10.15468/hpsx38
title: Occurrence of mammalia relicts at site l´Abri des Battuts I
DOI: 10.15468/evkyt9
title: Plasm bearing foraminifera counts from M35/1_MSN1056
DOI: 10.15468/48pukr
title: (Appendix C) Total cyst counts, and abundances of Selenopemphix undulata sp. nov. in ODP Site 202-1233
DOI: 10.15468/rcgej6
title: Range table from benthic foraminifers in ODP Hole 198-1209A
DOI: 10.15468/r86sa8
title: Total foraminifera counts of multinet M21/5_MSN740
DOI: 10.15468/8mfj5w
title: Assemblage of living benthic foraminifera in sediment core GeoB3713-1
DOI: 10.15468/jgu3cj
title: Sedimentological investigation on core V25-76
DOI: 10.15468/pn9bw6
title: Range table from planktonic foraminifers in ODP Hole 167-1016A
DOI: 10.15468/4dnufh
title: Planktic foraminifera abundance of Hole 9-79
DOI: 10.15468/u7y6z6
title: (Table 5) Distribution of Pleistocene to late Oligocene nannofossils in ODP Hole 108-659A
DOI: 10.15468/a54rut
title: Percentages of planktonic foraminifera species in sediment core V30-41
DOI: 10.15468/u829kc
title: Relative abundance of planktic foraminifera in sediment core TR126-29 from the 120 kyr time slice reconstruction
DOI: 10.15468/yuew9q
title: Microplankton abundance at Station SEPT-1997-GN36199704606MNB03 in the euphotic zone of the Aegean Sea in September 1997. Part 2 - dinoflagellates
DOI: 10.15468/pssrgk
title: (Table 1) Coccolith percentage of surface sediment samples from the south-eastern South Atlantik
DOI: 10.15468/2wa6wy
title: Distribution of planktic foraminifera of sediment core GIK23062-1 at stadium 5.5
DOI: 10.15468/bxrfuw
title: Planktic foraminifera abundance of Hole 1-6
DOI: 10.15468/t35f66
title: Benthic foraminifera abundance in per cent of Hole PRAD1-2
DOI: 10.15468/m4nm4z
title: Planktic foraminifera abundance of Hole 7-64A
DOI: 10.15468/qnxfdb
title: Pollen analysis of sediment profile NMS0 from Neumühler See
DOI: 10.15468/zd3cvn
title: (Table 1) Relative abundances of planktic foraminifers in bottom sediments from Core AMK4-316GC
DOI: 10.15468/4uaw5f
title: Meiofaunal abundance in sediments obtained during Belgica cruise BG06/13, Gollum Channels and Whittard Canyon
DOI: 10.15468/ecy5rf
title: Range table from benthic foraminifers in ODP Hole 139-855A
DOI: 10.15468/3rutkr
title: Phytoplankton abundance at station Casma_2003-06-24_1, Casma, Peru
DOI: 10.15468/eu2c4q
title: Planktic foraminifera abundance of Hole 60-460A
DOI: 10.15468/xb8bqc
title: Planktic foraminifera abundance of Hole 16-159
DOI: 10.15468/8t773a
title: (Table A a) Relative contributions of planktic foraminiferal species in sediment trap series L1/K276-22 at 2000 m water depth
DOI: 10.15468/5wgafb
title: annex2
DOI: 10.15468/yrzxwc
title: Dinoflagellate abundance of Hole 94-607A
DOI: 10.15468/95st7v
title: Abundance of organic-walled dinoflagellate cysts of sediment core PS1756-5
DOI: 10.15468/usfnd2
title: (Table 3) Distribution of benthic foraminifers in middle Miocene sediments of ODP Hole 182-1126B in the Great Australian Bight
DOI: 10.15468/jgq4rk
title: Palynomorph data and remarks on dominant tree taxa from IODP Hole 313-M0028A
DOI: 10.15468/n5m733
title: Abundance of two benthic foraminifera species in sediment core 12930-007
DOI: 10.15468/hd7su3
title: Abundance of benthic infauna in surface sediments from the North Sea sampled during cruise Tridens00/5
DOI: 10.15468/rgkhvk
title: Results of foraminifer and ostracode analyses of Hole 302-M0002A
DOI: 10.15468/hawyxm
title: Sarcodine counts and carbon biomass at station TT008_4-PMOC1
DOI: 10.15468/6gcubn
title: Benthic foraminiferal assemblage (Rose Bengal stained) in MUC OB10-K, turbidite sequence 2
DOI: 10.15468/nwx9uv
title: Nanoplankton abundance at station GeoB2017-4
DOI: 10.15468/6wh6k4
title: Abundance of meroplankton during cruise BP00 (southern Kara Sea)
DOI: 10.15468/9w5mnj
title: Range table from planktonic foraminifers in ODP Hole 169-1035A
DOI: 10.15468/k5g9ky
title: Plasm bearing foraminifera counts of multinet M12/3_MSN558
DOI: 10.15468/ya4e6q
title: Microplankton abundance in the euphotic zone of the Cretan Sea at Station JULY-1995-D4
DOI: 10.15468/2ybeer
title: (Appendix A2) Planktonic foraminifera and microfossil occurence in ODP Hole 130-806B
DOI: 10.15468/g74vhc
title: (Table T2) Abundance of dinoflagellates and other palynomorphs in Eocene-Oligocene sediments from ODP Hole 189-1172A
DOI: 10.15468/xwz78f
title: Total foraminifera counts of multinet POS231/3_MSN1330
DOI: 10.15468/qw3276
title: Distribution of planktonic foraminifera of sediment core SH1972_10
DOI: 10.15468/vdv45r
title: Diatom abundance of Hole 38-338, Part 2
DOI: 10.15468/55yqm4
title: Range table from benthic foraminifers in ODP Hole 159-959D
DOI: 10.15468/str5vx
title: Planktic foraminifera counts of sediment core V28-25
DOI: 10.15468/7ae5vk
title: Benthic foraminifera abundance of Hole 95-613
DOI: 10.15468/me3g7s
title: Range table from planktonic foraminifers in ODP Hole 151-910C
DOI: 10.15468/52excc
title: Large protozoa abundance measured on concentrated water bottle samples at station PS58/046-5
DOI: 10.15468/7s3p2j
title: Total foraminifera counts of multinet M21/6_MSN789
DOI: 10.15468/h69fgb
title: Total foraminifera counts of multinet M21/1_MSN615
DOI: 10.15468/pxz3nh
title: Range table from planktonic foraminifers in ODP Hole 169-1035D
DOI: 10.15468/hphmyh
title: Planktic foraminifera counts of sediment core RC11-121
DOI: 10.15468/uje6mv
title: Macrofauna abundance in surface sediment sampled during cruise DI222/2
DOI: 10.15468/b7ec6k
title: Range table from ostracoda in ODP Hole 160-967A
DOI: 10.15468/238y6a
title: Plasm bearing foraminifera counts of multinet SO118_MSN1266
DOI: 10.15468/adsdvc
title: Microfossil abundance of Hole 35-323
DOI: 10.15468/eagpzb
title: (Appendix) Relative abundance of some calcareous nannofossils in ODP Hole 119-738C
DOI: 10.15468/wnd2rz
title: (Table 4) Occurrence and estimated abundance of planktonic foraminifers at DSDP Site 85-573
DOI: 10.15468/my6746
title: Distribution of Quinqueloculina sp. in sediment core 13200-052
DOI: 10.15468/xqgpu6
title: Plasm bearing foraminifera counts of multinet M27/2_MSN879
DOI: 10.15468/yachgm
title: Planktic foraminifera assemblage in sediment core GIK23074-3
DOI: 10.15468/yw9uqy
title: (Figure 3) Distribution of benthic foraminifers in the Albian of DSDP Hole 71-511
DOI: 10.15468/jkuw64
title: Analyses of the recent components of sediment core PS1402-2
DOI: 10.15468/c37fws
title: Reconstruction of surface water temperature of sediment core GIK12379-1, Cape Barbas, North-West Africa (Appendix Tab. 4)
DOI: 10.15468/ftju54
title: Benthic foraminifera accumulation rate and benthic foraminiferal productivity proxies at ODP Site 165-999 in the Caribbean (Appendix A)

description: This study tests the hypothesis that the late Miocene to early Pliocene constriction and closure of the Central American Seaway (CAS), connecting the tropical Atlantic and East quatorial Pacific (EEP), caused a decrease in productivity in the Caribbean, due to decreased coastal upwelling and an end to the connection with high-productivity tropical Pacific waters. The present study compared paleoceanographic proxies for the interval between 8.3 and 2.5 Ma in 47 samples from south Caribbean ODP Site 999 with published data on EEP DSDP Site 503. Proxies for Site 999 include the relative abundance of benthic foraminiferal species representing bottom current velocity and the flux of organic matter to the sea floor, the ratio of infaunal/epifaunal benthic foraminiferal species and benthic foraminifer accumulation rates (BFARs). In addition, we calculated % resistant planktic foraminifers species and used the previously published % sand fraction and benthic carbon isotope values from Site 999. During early shoaling of the Isthmus (8.3-7.9 Ma) the Caribbean was under mesotrophic conditions, with little ventilation of bottom waters and low current velocity. The pre-closure interval (7.6-4.2 Ma) saw enhanced seasonal input of phytodetritus with even more reduced ventilation, and enhanced dissolution between 6.8 and 4.8 Ma. During the post-closure interval (4.2-2.5 Ma) in the Caribbean, paleoproductivity decreased, current velocity was reduced, and ventilation improved, while the seasonality of phytodetrital input was reduced dramatically, coinciding with the establishment of the Atlantic-Pacific salinity contrast at 4.2 Ma. Our data support the hypothesis that late Miocene constriction of the CAS at 7.9 Ma and its closure at 4.2 Ma caused a gradual decrease in paleoproductivity in the Caribbean, consistent with decreased current velocity and seasonality of the phytodetrital input.
DOI: 10.15468/t9zfrv
title: Range table from planktonic foraminifers in ODP Hole 180-1112A
DOI: 10.15468/uub7jb
title: Phytoplankton abundance in surface water in October 1995, Chimbote, Peru
DOI: 10.15468/xbs4ux
title: Planktic foraminifera abundance of Hole 15-153
DOI: 10.15468/t8bdsp
title: Macrobenthos in surface sediments off Sylt collected during HEINCKE cruise HE275
DOI: 10.15468/ck7a7u
title: (Appendix A) Benthic foraminiferal census data for extinction, uniserial survivor and high-flux, low-oxygen tolerant groups for ODP Hole 107-654A
DOI: 10.15468/4n8pee
title: Planktic foraminifera abundance of Hole 94-609
DOI: 10.15468/weapse
title: Range table from benthic foraminifers in ODP Hole 182-1128B
DOI: 10.15468/66mxsf
title: Planktic foraminifera abundance of Hole 68-503A
DOI: 10.15468/ka7vgu
title: Planktic foraminifera abundance of Hole 28-264A
DOI: 10.15468/3e4yfd
title: (Table 2) Documentation of vital effect change in Coccolitophorides above the FAD Emiliania huxleyi in DSDP Site 90-594 east of South Island, Southwest Pacific
DOI: 10.15468/hhukr7
title: Range table from ostracoda in ODP Hole 144-872C
DOI: 10.15468/8zwdxb
title: Nannofossil abundance of Hole 74-526A
DOI: 10.15468/wq3f25
title: Phytoplankton abundance during G. M. Dannevig cruise GMD90/18
DOI: 10.15468/jkb3nh
title: Planktic foraminifera abundance of Hole 72-517
DOI: 10.15468/qw3yj7
title: Planktic foraminifera counts of sediment core V14-101
DOI: 10.15468/288k6b
title: Microzooplankton abundance and biomass at station TT045_2-1
DOI: 10.15468/zzxdcj
title: Range table from planktonic foraminifers in ODP Hole 182-1132C
DOI: 10.15468/62fm48
title: Phytoplankton abundance in surface water in October 1996, Chimbote, Peru
DOI: 10.15468/cw3m5e
title: Organic-walled dinoflagellate cyst counts of sediment core GeoB9503-5
DOI: 10.15468/8nrhyd
title: (Table 4) Abundances of dinoflagellates in DSDP Hole 81-552A
DOI: 10.15468/ypph2n
title: Planktic foraminifera counts of sediment core RC11-147
DOI: 10.15468/8udnf8
title: Range table from planktonic foraminifers in ODP Hole 141-861D
DOI: 10.15468/5rjppq
title: Range table from dinoflagellates, acritarchs and prasinophytes in ODP Hole 174-1071F
DOI: 10.15468/rmnkut
title: Siliceous microfossil occurrence, Site 177-1092
DOI: 10.15468/c7u7xx
title: (Table 8) Percent distribution of calcareous nannofossils at ODP Hole 125-781A
DOI: 10.15468/ngaj77
title: (Table 2) Distribution of Lower Cretaceous calcareous nannofossils in ODP Hole 123-766A
DOI: 10.15468/3sky9c
title: Nannofossil abundance of Hole 30-285
DOI: 10.15468/yyryxg
title: Planktic foraminifera distribution of sediment core CS72-37
DOI: 10.15468/4cmq25
title: Total foraminifera counts of multinet POS247/2_MSN1390
DOI: 10.15468/z3wjtx
title: Total foraminifera counts from M35/1_MSN1070
DOI: 10.15468/v5bes5
title: Percentages of planktonic foraminifera species in sediment core V22-182
DOI: 10.15468/xdv2zx
title: (Table A.05) Foraminiferal census data of sediment core PS1243-1 during marine isotopic stage 7 (100-150 µm)
DOI: 10.15468/ywwpv7
title: Planktic foraminifera counts of sediment core A180-72
DOI: 10.15468/jj2yv5
title: Total foraminifera counts of multinet M10/2_MSN268
DOI: 10.15468/bzskqj
title: Microzooplankton abundance and biomass at station TT043_9-1
DOI: 10.15468/p2fctw
title: Planktic foraminifera abundance of Hole 39-357
DOI: 10.15468/dx73jn
title: (Table 19) Benthic foraminifera in Pliocene sediments of DSDP Hole 90-593
DOI: 10.15468/e9stee
title: (Appendix B) Abundances of components in ODP Hole 112-680B, core 2H
DOI: 10.15468/myyu6b
title: Planktic foraminifera abundance of Hole 67-499B
DOI: 10.15468/gmdf9a
title: Marine palynomorph abundance estimates of sediment core CRP-2A (Fig. 2)

description: A diverse assemblage of marine palynomorphs was recovered from the Oligocene - Miocene section of CRP-2/2A. Most of the assemblage is composed of previously unrecognised species. Three distinct groups of marine palynomorph were recognised: (1) prasinophytes, mainly Cymatiosphaera, (2) acritarchs, mainly Leiosphaeridia and Sigmopollis although Leiofusa is an important component of the bottom half of the hole, and (3) dinoflagellate cysts. About 27 species of in situ dinoflagellate cysts were recorded, of which seven apparently undescribed species of Lejeunecysta form a prominent component. Reworked specimens of several species of the Paleogene Transantarctic Flora occur in CRP-2/2A sediments. Several abundance peaks of reworked taxa from the Transantarctic Flora are recorded. Three marine palynomorph zones were recognised (MP3, MP2, MP1), considered to be early Oligocene, late Oligocene, and late Oligocene/early Miocene in age respectively. Samples from the Quaternary and Pliocene part of CRP-2/2A were also examined. These proved either barren or yielded very sparse low diversity floras.
DOI: 10.15468/kautzr
title: Phytoplankton abundance in surface water in July-August 1996, Paita, Peru
DOI: 10.15468/8j4uqv
title: Modern planktic foraminifera assemblage from surface sediment samples used as reference data set for the reconstruction of Atlantic sea surface temperatures during the last glacial maximum (LGM)
DOI: 10.15468/cbyk28
title: Foraminifera abundance of Hole 48-404
DOI: 10.15468/mcpf8h
title: Content of coarse fraction and G. menardii in sediment corev V25-64
DOI: 10.15468/2txzzt
title: Abundance of microzooplankton measured on water bottle samples during POLARSTERN cruise ANT-X/6
DOI: 10.15468/uav6ky
title: Composition of the medium silt fraction in surface sediments of the northwest African continental margin (Appendix Tab. 4)
DOI: 10.15468/8h7c72
title: Nannofossil abundance of Hole 64-478
DOI: 10.15468/e42bvy
title: Phytoplankton abundance at bottle station GOM2/7
DOI: 10.15468/apkcsx
title: Number of live benthic foraminifera in Nordensheld Bay, Novaja Zemlja
DOI: 10.15468/g8r5ve
title: Relative abundance of live benthic foraminifera of sediment core M5/2_88MC
DOI: 10.15468/q6s6qb
title: Assemblage of living benthic foraminifera in sediment profile GeoB4909-4
DOI: 10.15468/g9s249
title: Results of diatom analysis of Hole 302-M0004A
DOI: 10.15468/hd8zn6
title: Planktic foraminifera in surface sediments
DOI: 10.15468/6nf9re
title: Distribution of Quinqueloculina sp. in sediment core 13077-070
DOI: 10.15468/ahs2zg
title: (Appendix 1) Distribution of planktonic foraminifera in sediment of the last 70 kyr of ODP Core 161-977A from the western Mediterranean Sea
DOI: 10.15468/d5nmzc
title: Range table from planktonic foraminifers in ODP Hole 172-1061A
DOI: 10.15468/r3v6ep
title: Dinoflagellates of multicorer surface sediments

description: Only very few studies focus on recent calcareous dinoflagellate cyst diversity, geographic distribution and ecology, so that information on the distribution patterns and environmental affinities of individual cyst species is extremely limited. This information is, however, essential if we want to use calcareous dinoflagellate cysts for palaeoenvironmental reconstruction. Surface sediment samples from the generally oligotrophic western equatorial Atlantic Ocean, offshore northeast Brazil, were therefore quantitatively analysed for their calcareous dinoflagellate cyst content, including the calcareous vegetative coccoid Thoracosphaera heimii. Seven calcareous dinoflagellate cyst species/morphotypes and T. heimii were encountered in high concentrations throughout the area. Substantial differences in the distribution patterns were observed. The highest concentrations of cysts are found in sediments of the more oligotrophic, oceanic regions, beyond the influence of Amazon River discharge waters. Dinoflagellates producing calcareous cysts thus appear to be capable of surviving low nutrient concentrations and produce large numbers of cysts in relatively stable and predictable environments affected by minimal seasonality. To test for the environmental affinities of individual species, distribution patterns in surface sediments were compared with temperature, salinity, density and stratification gradients within the upper water column (0-100 m) over different times of the year, using principal components analysis and redundancy analysis. T. heimii and four of the seven encountered cyst species (Sphaerodinella? albatrosiana, two morphotypes of Sphaerodinella? tuberosa and Scrippsiella regalis) relate to these parameters significantly and the variations in the cyst associations appear to be associated with the different surface water currents characterising the area. The results imply that calcareous dinoflagellate cyst distributions can potentially be used to distinguish between different open oceanic environments and they could, therefore, be useful in tracing water mass movements throughout the late Quaternary.
DOI: 10.15468/jfz9bz
title: Distribution of meiobenthos in sediment core M19_223-2 of the northeastern Atlantic (Table 1)
DOI: 10.15468/4d95g6
title: Nannofossil abundance of Hole 5-36