Pollen counts of sediment core MD95-2039, supplement to: Roucoux, Katherine H; de Abreu, Lucia; Shackleton, Nicholas J; Tzedakis, Polychronis C (2005): The response of NW Iberian vegetation to North Atlantic climate oscillations during the last 65 kyr. Quaternary Science Reviews, 24(14-15), 1637-1653

• Main Authors: Roucoux, Katherine H, de Abreu, Lucia, Shackleton, Nicholas J, Tzedakis, Polychronis C
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2005
• Subjects: DEPTH, sediment/rock; Exotic grains; Sample volume; Abies; Alnus; Betula; Castanea; Cedrus; Corylus; Fagus; Fraxinus; Olea; Oleaceae; Ostrya; Picea; Pinus; Quercus; Quercus ilex-type; cf. Quercus; Salix; Taxus; Tilia; Ulmus; Pistacia; Phillyrea; Fraxinus ornus; Buxus; Cornaceae; Ephedra distachya; Ephedra fragilis; Frangula alnus; Hippophae rhamnoides; Juniperus; Morus-type; cf. Myrica; Myrtus; Rhamnus; Tamarix; Sambucus; Gramineae; Adonis; cf. Alchemilla; Androsace; Armeria maritima-type; Artemisia; Cannabis-type; Caryophyllaceae; Chenopodiaceae; cf. Chelidonium majus; Chrysosplenium; Cistaceae; Compositae Liguliflorae; Compositae Tubuliflorae; Centaurea; Consolida ambigua; Crithmum maritimum; Cruciferea; Cyperaceae; Ericaceae undifferentiated; Empetrum; Calluna; Euphorbia; Filipendula; Galium-type; Gentiana; Helianthemum; Helleborus; Humulus lupulus; Hypericum; Lamium-type; cf. Lithospermum; Lobelia; Medicago; Mentha-type; Onagraceae; Oxyria-type; Plantago; Primulaceae; Ranunculus-type; Rosaceae; Rumex acetosa-type; Saxifraga stellaris-type; Saxifragaceae; Solanum nigrum; Thalictrum; Umbelliferae; Urtica; Urtica pilulifera; Veronica-type; Geraniaceae; Radiola; Labiatae; Crassulaceae; Liliaceae; Fabaceae; Apium; Callitriche; Myriophyllum indeterminata; Potamogeton; Sparganium; Myriophyllum alterniflorum; Myriophyllum verticillatum; Spores, monolete; Isoetes; Spores, trilete; Bryophyte spores; Pediastrum spp.; Pollen and spores, decayed; Indeterminable crumpled; Pollen and spores, concealed; Pollen, redeposited; Calypso Corer; Counting, palynology; MD101; Marion Dufresne 1995; International Marine Global Change Study IMAGES; Greenland; Shackleton; Willis; Greenland ice core; ice core; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.484979; https://doi.pangaea.de/10.1594/PANGAEA.484979

Pollen and oceanographic data from deep ocean core MD95-2039 provide a centennial to millennial scale record of conditions offshore and of the vegetation of north-west Iberia for the period 10–65 ka. The planktonic oxygen isotope record of this core, reflecting predominantly sea surface temperature (SST), shows a pattern of millennial-scale oscillations that is very similar to climatic changes recorded by the Greenland ice core records over the same interval. In turn, tree populations show a pattern of rapid expansions and contractions that follow the pronounced and abrupt isotopic shifts recorded offshore. Through Marine Isotope Stage (MIS) 3, this millennial-scale pattern of vegetation change, alternating between steppe and open woodland, is superimposed on a longer-term pattern of shrinking ericaceous heathland and decreasing size of successive interstadial tree populations. Trees persisted during the Last Glacial Maximum (LGM), at greater abundance than during many of the coldest episodes of MIS 3. This agrees with the marine data which indicate that LGM sea surface temperatures here were significantly warmer than the minima recorded in MIS 3. Our combined marine-terrestrial record, together with data from nearby sequences, provides a stepping stone between terrestrial sequences and the Greenland ice core and North Atlantic marine records. This will permit a better understanding of the behaviour of vegetation across different regions at several scales of climatic forcing. : Pollen was extracted from samples of 4 cm**3 using a modified version of the standard palynological preparation technique (Bennett and Willis, 2002). Modifications include using only a 180 µm sieve, cold acid digestion and omitting acetolysis. See Reference (Roucoux etal., 2005, doi:10.1016/j.quascirev.2004.08.022) for detailed discussion of the method.