/* DATA DESCRIPTION: Citation: Sanchez Goñi, Maria Fernanda; Lopez-Martinez, Constancia (2026): Relative abundance of main pollen from sediment core MD99-2203 off Cape Hatteras, SW North Atlantic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.992493 Abstract: The data presented derive from sediment core MD99-2203, collected in 1999 off Cape Hatteras as part of the IMAGES project. The 41-m-long sedimentary sequence was retrieved during leg MD114 by the R/V Marion Dufresne, equipped with a Giant Calypso corer. The primary objective was to document paleoceanographic and paleoclimatic changes at 35°N in the southwestern North Atlantic, at the boundary between subtropical and subpolar gyre influences, over the past 50,000 years, . We present pollen percentages of the main ecological groups (Pinus, Boreal forest, Temperate forest, cumulative Boreal and Temperate forest, and Cyperaceae) from the samples analyzed between 1350 and 3800 cm depth (corrected depth: 1226-3672 cm). Most of the pollen analysis was performed at 10 to 20 cm resolution. The sampling resolution in the intervals 1910-2560 cm (corrected depth: 1786-2436 cm) and 3138-3800 cm (corrected depth: 3014-3672 cm) varies between 17 and 40 cm. One hundred thirty samples were analyzed for pollen grains and spores. Sample preparation followed standard palynological protocols using HCl and HF. For each sample, 1.5-5.5 cm³ of fine sediment (<150 µm) was processed at an average sampling resolution of 10–20 cm. The final residues were mounted unstained in bidistilled glycerin, a mobile mounting medium that allows rotation of pollen grains and spores.Pollen and spores were identified using a Zeiss Axio Imager A10 light microscope at 400X and 1000x magnifications. In most of the samples, a minimum of 100 pollen grains, excluding Pinus, and 20 pollen morphotypes were counted. Keyword(s): pollen data; SE North America; SW North Atlantic; vegetation changes Supplement to: Sanchez Goñi, Maria Fernanda; Rossignol, Linda; Londeix, Laurent; Extier, Thomas; Weitzel, Nils; Naughton, Filipa; López-Martínez, Constancia; Salgueiro, Emilia; Fourcade, Tiffanie; Grousset, Francis E (2026): Land–sea thermal decoupling and iceberg discharges in the western North Atlantic during Heinrich Stadials 5–3. Quaternary Science Reviews, 389, 110141, https://doi.org/10.1016/j.quascirev.2026.110141 Project(s): International Marine Global Change Study (IMAGES) Coverage: LATITUDE: 34.973000 * LONGITUDE: -75.201000 DATE/TIME START: 1999-08-01T00:00:00 * DATE/TIME END: 1999-08-01T00:00:00 MINIMUM DEPTH, sediment/rock: 13.50 m * MAXIMUM DEPTH, sediment/rock: 38.00 m Event(s): MD99-2203 (408US) * LATITUDE: 34.973000 * LONGITUDE: -75.201000 * DATE/TIME: 1999-08-01T00:00:00 * ELEVATION: -620.0 m * RECOVERY: 38.05 m * LOCATION: Cape Hateras * CAMPAIGN: MD114 (IMAGES V) * BASIS: Marion Dufresne (1995) (URI: https://en.wikipedia.org/wiki/Marion_Dufresne_(1994)) * METHOD/DEVICE: Calypso Corer (CALYPSO) Parameter(s): DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) * COMMENT: Sample depth Depth, corrected [m] (Depth corr) * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) AGE [ka BP] (Age) * GEOCODE * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) * METHOD/DEVICE: Age, 14C Pinus [%] (Pinus) * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) * METHOD/DEVICE: Relative abundance (counted and calculated from the <150 µm fraction) Pollen, boreal forest [%] (Pollen bo forest) * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) * METHOD/DEVICE: Relative abundance (counted and calculated from the <150 µm fraction) Pollen, temperate forest [%] (Pollen te forest) * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) * METHOD/DEVICE: Relative abundance (counted and calculated from the <150 µm fraction) Pollen, boreal + temperate forest, cumulated [%] (Pollen bo + te forest cum) * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) * METHOD/DEVICE: Relative abundance (counted and calculated from the <150 µm fraction) Cyperaceae [%] (Cyperac) * PI: Sanchez Goñi, Maria Fernanda (https://orcid.org/0000-0001-8238-7488, maria.sanchez-goni@u-bordeaux.fr, http://www.epoc.u-bordeaux.fr/index.php?lang=en&page=fiche_permanents&id=mfsanche) * METHOD/DEVICE: Relative abundance (counted and calculated from the <150 µm fraction) License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 780 data points */ Depth sed [m] Depth corr [m] Age [ka BP] Pinus [%] Pollen bo forest [%] Pollen te forest [%] Pollen bo + te forest cum [%] Cyperac [%] 13.50 12.26 26.312 43.67201426 25.94936709 20.25316456 46.20253165 33.544303800 13.60 12.36 26.467 58.50340136 28.68852459 13.93442623 42.62295082 35.245901640 13.70 12.46 26.587 42.02898551 31.00000000 19.00000000 50.00000000 26.000000000 13.80 12.56 26.684 61.08374384 32.48945148 24.47257384 56.96202532 30.379746840 13.90 12.66 26.771 55.33141210 29.67741935 27.09677419 56.77419355 24.516129030 14.00 12.76 26.850 60.84033613 33.90557940 21.45922747 55.36480687 28.326180260 14.10 12.86 26.948 51.17521368 36.10503282 23.19474836 59.29978118 20.568927790 14.20 12.96 27.058 59.68253968 25.98425197 22.83464567 48.81889764 29.133858270 14.30 13.06 27.167 54.75728155 16.73819742 36.05150215 52.78969957 18.884120170 14.40 13.16 27.276 51.77304965 21.56862745 36.27450980 57.84313725 25.490196080 14.50 13.26 27.398 47.32510288 17.96875000 28.90625000 46.87500000 31.250000000 14.60 13.36 27.528 42.89772727 19.40298507 27.86069652 47.26368159 21.890547260 14.70 13.46 27.650 41.96642686 19.00826446 29.75206612 48.76033058 33.884297520 14.80 13.56 27.768 47.92746114 24.37810945 27.86069652 52.23880597 26.865671640 14.90 13.66 27.835 42.92035398 24.03100775 27.13178295 51.16279070 30.232558140 15.00 13.76 27.868 49.23857868 37.33333333 26.66666667 64.00000000 20.666666670 15.10 13.86 27.897 60.96196868 38.68194842 25.78796562 64.46991404 21.776504300 15.20 13.96 27.922 52.48226950 26.36815920 27.86069652 54.22885572 24.875621890 15.30 14.06 27.950 54.00340716 34.81481481 26.66666667 61.48148148 21.481481480 15.40 14.16 27.978 55.15695067 29.00000000 28.00000000 57.00000000 22.000000000 15.50 14.26 28.006 53.79213483 39.81762918 23.10030395 62.91793313 15.805471120 15.60 14.36 28.034 51.68269231 37.31343284 21.89054726 59.20398010 18.905472640 15.70 14.46 28.062 47.35042735 27.27272727 33.76623377 61.03896104 18.181818180 15.80 14.56 28.088 45.65217391 22.00000000 30.00000000 52.00000000 30.000000000 15.90 14.66 28.116 56.27118644 32.55813953 27.90697674 60.46511628 20.930232560 16.00 14.76 28.144 56.26102293 30.64516129 29.03225806 59.67741935 24.193548390 16.10 14.86 28.171 53.86178862 28.63436123 29.07488987 57.70925110 18.502202640 16.20 14.96 28.198 61.41215107 27.65957447 29.78723404 57.44680851 26.382978720 16.30 15.06 28.224 54.06976744 29.11392405 23.62869198 52.74261603 22.784810130 16.40 15.16 28.250 53.45622120 40.59405941 20.46204620 61.05610561 24.422442240 16.50 15.26 28.276 64.89898990 34.53237410 26.61870504 61.15107914 18.705035970 16.60 15.36 28.302 54.61254613 24.39024390 37.39837398 61.78861789 20.325203250 16.70 15.46 28.329 60.37463977 22.90909091 33.45454545 56.36363636 25.454545450 16.80 15.56 28.356 54.42043222 23.27586207 29.31034483 52.58620690 25.000000000 16.90 15.66 28.383 56.96378830 25.56634304 32.36245955 57.92880259 18.770226540 17.00 15.76 28.410 59.04486252 23.67491166 33.92226148 57.59717314 25.441696110 17.10 15.86 28.551 57.86407767 30.87557604 27.64976959 58.52534562 17.511520740 17.20 15.96 28.769 57.62711864 14.00000000 39.00000000 53.00000000 24.000000000 17.30 16.06 28.982 53.26370757 38.54748603 21.78770950 60.33519553 25.139664800 17.40 16.16 29.193 50.50301811 24.39024390 34.14634146 58.53658537 18.699186990 17.50 16.26 29.413 45.65217391 25.00000000 35.00000000 60.00000000 14.000000000 17.60 16.36 29.639 51.44230769 27.72277228 39.60396040 67.32673267 18.811881190 17.80 16.56 30.030 43.95604396 33.33333333 32.35294118 65.68627451 18.627450980 18.00 16.76 30.417 42.19653179 21.00000000 31.00000000 52.00000000 26.000000000 18.20 16.96 30.892 42.12034384 15.84158416 23.76237624 39.60396040 28.712871290 18.30 17.06 31.143 51.21359223 16.41791045 24.87562189 41.29353234 31.840796020 18.40 17.16 31.396 55.16528926 22.58064516 41.47465438 64.05529954 20.276497700 18.60 17.36 31.924 64.73684211 27.36318408 28.85572139 56.21890547 29.850746270 18.80 17.56 32.143 46.52406417 17.00000000 27.00000000 44.00000000 25.000000000 19.10 17.86 32.211 47.27272727 21.18226601 20.68965517 41.87192118 22.660098520 19.30 18.06 32.243 41.51898734 12.55411255 24.24242424 36.79653680 19.913419910 19.60 18.36 32.290 47.24409449 12.43781095 28.85572139 41.29353234 21.890547260 19.90 18.66 32.339 42.73743017 17.07317073 35.12195122 52.19512195 24.390243900 20.20 18.96 32.388 51.43540670 25.12315271 30.54187192 55.66502463 27.586206900 20.45 19.21 32.429 36.19047619 26.36815920 30.84577114 57.21393035 21.890547260 20.80 19.56 32.472 38.73873874 23.52941176 29.41176471 52.94117647 10.784313730 20.90 19.66 32.482 54.12844037 16.00000000 37.00000000 53.00000000 16.000000000 21.10 19.86 32.501 53.27102804 15.00000000 35.00000000 50.00000000 22.000000000 21.30 20.06 32.521 49.62216625 10.00000000 37.00000000 47.00000000 22.000000000 21.60 20.36 32.549 46.80851064 18.00000000 33.00000000 51.00000000 14.000000000 21.80 20.56 32.569 40.52478134 16.66666667 33.33333333 50.00000000 11.764705880 22.10 20.86 32.598 43.73259053 19.80198020 34.65346535 54.45544554 17.821782180 22.30 21.06 32.618 45.67567568 21.39303483 42.78606965 64.17910448 9.950248756 22.60 21.36 32.646 54.98891353 20.19704433 28.57142857 48.76847291 24.630541870 22.80 21.56 32.666 41.39941691 20.39800995 42.78606965 63.18407960 18.905472640 23.10 21.86 32.695 57.17344754 26.00000000 40.00000000 66.00000000 13.000000000 23.30 22.06 32.715 57.41525424 21.39303483 27.86069652 49.25373134 16.915422890 23.60 22.36 32.773 65.75342466 32.00000000 28.00000000 60.00000000 16.000000000 23.80 22.56 33.004 53.75000000 23.42342342 31.53153153 54.95495495 21.621621620 24.10 22.86 33.416 51.89075630 22.27074236 31.44104803 53.71179039 27.074235810 24.30 23.06 33.691 54.23340961 24.00000000 33.00000000 57.00000000 24.000000000 24.50 23.26 33.968 45.20547945 18.00000000 29.00000000 47.00000000 28.000000000 24.70 23.46 34.244 43.85474860 20.39800995 29.85074627 50.24875622 16.915422890 24.90 23.66 34.515 46.09164420 29.00000000 24.00000000 53.00000000 15.000000000 25.10 23.86 34.787 42.45810056 29.12621359 19.41747573 48.54368932 26.213592230 25.30 24.06 35.057 38.97280967 24.75247525 26.73267327 51.48514851 29.702970300 25.60 24.36 35.461 38.78787879 25.74257426 29.70297030 55.44554455 24.752475250 25.80 24.56 35.728 47.12041885 23.76237624 30.69306931 54.45544554 26.732673270 26.00 24.76 35.991 42.08037825 27.34693878 22.85714286 50.20408163 24.489795920 26.20 24.96 36.261 43.82022472 24.00000000 24.00000000 48.00000000 22.000000000 26.40 25.16 36.529 43.13186813 24.63768116 23.18840580 47.82608696 27.053140100 26.60 25.36 36.799 41.95402299 23.76237624 23.76237624 47.52475248 30.693069310 26.80 25.56 37.067 51.33819951 32.00000000 18.00000000 50.00000000 22.000000000 27.00 25.76 37.338 47.63092269 24.76190476 28.57142857 53.33333333 23.809523810 27.20 25.96 37.614 58.45213849 38.23529412 20.58823529 58.82352941 23.529411760 27.40 26.16 37.888 46.09164420 25.00000000 28.00000000 53.00000000 15.000000000 27.60 26.36 38.164 46.25668449 26.36815920 40.79601990 67.16417910 14.925373130 27.80 26.56 38.442 50.00000000 22.17194570 26.24434389 48.41628959 25.339366520 28.00 26.76 38.723 54.02298851 27.00000000 31.00000000 58.00000000 14.000000000 28.20 26.96 38.993 47.07158351 31.96721311 27.04918033 59.01639344 19.672131150 28.30 27.06 39.128 44.90358127 15.00000000 31.00000000 46.00000000 28.000000000 28.40 27.16 39.262 49.50298211 22.83464567 27.55905512 50.39370079 33.858267720 28.60 27.36 39.532 49.11392405 29.35323383 24.87562189 54.22885572 26.865671640 28.80 27.56 39.806 37.53846154 25.12315271 23.64532020 48.76847291 23.645320200 29.00 27.76 40.080 59.03614458 32.35294118 22.54901961 54.90196078 29.411764710 29.20 27.96 40.349 47.40932642 20.19704433 23.64532020 43.84236453 32.512315270 29.40 28.16 40.623 44.52214452 34.45378151 22.68907563 57.14285714 17.647058820 29.60 28.36 40.904 47.62931034 40.74074074 22.22222222 62.96296296 20.576131690 29.80 28.56 41.178 53.13725490 28.87029289 29.28870293 58.15899582 21.757322180 30.00 28.76 41.447 52.94117647 26.00000000 24.00000000 50.00000000 18.000000000 30.20 28.96 41.712 46.66666667 31.66666667 23.33333333 55.00000000 23.333333330 30.40 29.16 41.988 44.78021978 33.33333333 22.88557214 56.21890547 19.900497510 30.60 29.36 42.263 49.90583804 43.60902256 21.05263158 64.66165414 18.796992480 30.80 29.56 42.543 52.49042146 33.06451613 28.22580645 61.29032258 21.774193550 31.00 29.76 42.777 50.91911765 34.08239700 24.71910112 58.80149813 25.468164790 31.20 29.96 42.988 51.82608696 27.07581227 31.04693141 58.12274368 18.050541520 31.38 30.14 43.173 55.21582734 40.56224900 22.48995984 63.05220884 20.080321290 31.60 30.32 43.354 49.30693069 45.31250000 28.12500000 73.43750000 14.843750000 32.00 30.72 43.759 54.28015564 34.46808511 32.34042553 66.80851064 17.021276600 32.20 30.92 43.962 51.42180095 28.78048780 30.24390244 59.02439024 20.487804880 32.40 31.12 44.164 52.15419501 40.28436019 20.85308057 61.13744076 20.853080570 32.60 31.32 44.365 57.46606335 44.68085106 21.27659574 65.95744681 12.765957450 32.80 31.52 44.568 48.73096447 26.73267327 30.69306931 57.42574257 23.762376240 33.03 31.75 44.799 52.91095890 39.63636364 27.63636364 67.27272727 17.454545450 33.20 31.92 44.968 50.64102564 30.73593074 33.76623377 64.50216450 16.450216450 33.40 32.12 45.170 52.83018868 28.00000000 27.00000000 55.00000000 20.000000000 33.60 32.32 45.379 66.10169492 41.00000000 28.00000000 69.00000000 16.000000000 33.80 32.52 45.585 58.38150289 40.74074074 30.55555556 71.29629630 13.888888890 34.00 32.72 45.790 65.00000000 45.30612245 27.75510204 73.06122449 10.612244900 34.40 33.12 46.195 63.25411335 35.32338308 34.82587065 70.14925373 11.940298510 34.60 33.32 46.396 52.80373832 29.70297030 38.61386139 68.31683168 14.851485150 34.80 33.52 46.597 56.96428571 33.60995851 27.38589212 60.99585062 21.576763490 35.20 33.92 47.002 54.38202247 30.04926108 26.60098522 56.65024631 24.630541870 35.60 34.32 47.407 55.42406312 29.20353982 26.54867257 55.75221239 25.663716810 36.00 34.72 47.808 65.39792388 40.00000000 25.00000000 65.00000000 18.000000000 36.40 35.12 48.210 60.76923077 35.29411765 28.43137255 63.72549020 18.627450980 36.80 35.52 48.622 61.24031008 25.00000000 33.00000000 58.00000000 22.000000000 37.20 35.92 49.023 68.59375000 35.32338308 33.83084577 69.15422886 12.935323380 37.60 36.32 49.427 77.45253165 36.84210526 37.89473684 74.73684211 14.736842110 38.00 36.72 49.827 74.53906936 43.44827586 26.89655172 70.34482759 17.931034480