Citation:

PANGAEA.992493

Name: Relative abundance of main pollen from sediment core MD99-2203 off Cape Hatteras, SW North Atlantic
Published: 2026-07-09
License: https://creativecommons.org/licenses/by/4.0/
Keywords: pollen data; SE North America; SW North Atlantic; vegetation changes

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Published: 2026-07-09 • DOI registered: 2026-08-07

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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: (IMAGES V) * Basis: * Method/Device: Calypso Corer (CALYPSO)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Sanchez Goñi, Maria Fernanda		Geocode – Sample depth
2	Depth, corrected	Depth corr	m	Sanchez Goñi, Maria Fernanda
3	AGE	Age	ka BP	Sanchez Goñi, Maria Fernanda	Age, 14C	Geocode
4	Pinus	Pinus	%	Sanchez Goñi, Maria Fernanda	Relative abundance (counted and calculated from the <150 µm fraction)
5	Pollen, boreal forest	Pollen bo forest	%	Sanchez Goñi, Maria Fernanda	Relative abundance (counted and calculated from the <150 µm fraction)
6	Pollen, temperate forest	Pollen te forest	%	Sanchez Goñi, Maria Fernanda	Relative abundance (counted and calculated from the <150 µm fraction)
7	Pollen, boreal + temperate forest, cumulated	Pollen bo + te forest cum	%	Sanchez Goñi, Maria Fernanda	Relative abundance (counted and calculated from the <150 µm fraction)
8	Cyperaceae	Cyperac	%	Sanchez Goñi, Maria Fernanda	Relative abundance (counted and calculated from the <150 µm fraction)

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

780 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Depth corr [m]	3 Age [ka BP]	4 Pinus [%]	5 Pollen bo forest [%]	6 Pollen te forest [%]	7 Pollen bo + te forest cum [%]	8 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