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  • Late Holocene climatic changes in western equatorial Africa inferred from pollen from Lake Sinnda, southern Congo
  • Aridity ; C 14 dating ; Climatic variation ; Congo ; Holocene ; Lacustrine sediment ; Palaeoclimate ; Palynology ; Pollen diagram
  • Aridité ; Congo ; Datation C 14 ; Diagramme pollinique ; Holocène ; Palynologie ; Paléoclimat ; Sédiment lacustre ; Variation climatique
  • Pollen analysis of 2 cores from the Lake Sinnda, located in one of the driest areas of the southern Congo, reveals a history of vegetation and climate in this region during the past 5000 yr. A major change centered around 3000-2500 yr B.P
  • . is indicated by an abrupt decrease in forest pollen and by a corresponding increase in grassland pollen. Concurrent drying up of the lake shows that climate, in particular aridity, was the major cause of this change. The aridity predates agriculture marked
  • by pollen of the oil palm at Lake Sinnda.
  • Atmospheric circulation ; Climatic variation ; Holocene ; Monsoon ; Palaeoclimate ; Palynology ; Pollen diagram ; Quaternary ; United States of America ; Wyoming
  • Circulation atmosphérique ; Diagramme pollinique ; Etats-Unis ; Holocène ; Mousson ; Palynologie ; Paléoclimat ; Quaternaire ; Variation climatique ; Wyoming
  • A 12,500-yr pollen record from Loon Lake, Wyoming provides information on the climate history of the southwestern margin of Yellowstone National Park. The environmental reconstruction was used to evaluate hypotheses that address spatial variations
  • Arizona ; Climatic variability ; Diatom ; Holocene ; Lacustrine sediment ; Lake level ; Mollusca ; Palaeo-environment ; Palynology ; Pollen diagram ; United States of America
  • Arizona ; Diagramme pollinique ; Diatomée ; Etats-Unis ; Holocène ; Mollusque ; Niveau lacustre ; Palynologie ; Paléo-environnement ; Sédiment lacustre ; Variabilité climatique
  • Data from pollen, plant macrofossils, diatoms, mollusks, and fish bones and scales are combined with geologic data to provide the most detailed Holocene record yet available for the southern Colorado Plateau.
  • The application of the most recent techniques of pollen extraction allows a sufficient number of pollen grains to be obtained from stalagmites and to construct pollen diagrams based on a significant number of grains. The transport of pollen through
  • fissured calcareous rocks, by infiltrating water, produces pollen assemblies which reflect the development of the local vegetation. The growth of the stalagmites is not restricted to interglacials: among the six stalagmites studied, three were formed during
  • Late Quaternary vegetation and climate change in the Amazon Basin based on a 50,000 year pollen record from the Amazon Fan, ODP Site 932
  • Alluvial cone ; Amazonas River ; Atlantic Ocean ; Climatic variation ; Holocene ; Isotope analysis ; Marine sediment ; Oxygen 18 ; Palaeo-ecology ; Palynology ; Pollen diagram ; Quaternary ; South Atlantic Ocean ; Tropical rain forest ; Watershed
  • Amazonas rio ; Analyse isotopique ; Atlantique ; Atlantique Sud ; Bassin-versant ; Cône de déjection ; Diagramme pollinique ; Forêt tropicale ; Holocène ; Oxygène 18 ; Palynologie ; Paléo-écologie ; Quaternaire ; Sédiment marin ; Variation
  • The aim of this study is to compare the modern Amazon River pollen discharge and terrestrial fossil pollen records with high-resolution fossil pollen and stable isotope records from the Amazon Fan so as to reconstruct the vegetation of the Amazon
  • A 12,000-year pollen record from Lake Maliq, Albania
  • Albania ; C 14 dating ; Forest ; Geochronology ; Holocene ; Lacustrine sediment ; Lateglacial ; Palaeo-environment ; Palaeoclimate ; Palynology ; Pollen diagram ; Quaternary
  • Albanie ; Datation C 14 ; Diagramme pollinique ; Forêt ; Géochronologie ; Holocène ; Palynologie ; Paléo-environnement ; Paléoclimat ; Quaternaire ; Sédiment lacustre ; Tardiglaciaire
  • The AA. present here the first pollen data from Albania. They come from lacustrine and peat deposits cored in former Lake Maliq in the Korçë basin at an altitude of 818 m. When compared with other pollen sites in northwestern Greece, the Maliq
  • pollen data allow the completion of an altitudinal transect between 285 and 1800 m and provide a new interpretation involving the composition and subsequent development of ecosystems at middle altitude in the Balkans for the past 12,000 years.
  • Calibrating pollen data in climatic terms: improving the methods
  • Analyse spatiale ; Autocorrélation spatiale ; Calage ; Diagramme pollinique ; Etats-Unis ; Géographie physique ; Holocène ; Michigan ; Modélisation ; Méthodologie ; Palynologie ; Paléoclimatologie ; Quaternaire ; Reconstitution climatique
  • Multiple linear regression of modern climate and pollen data allows the development of statistical calibration functions that transform percentages of certain pollen types into quantitative estimates of climatic variables, and these functions, when
  • applied to Holocene pollen data, yield estimates of climatic variables for past times. We outline the steps to be followed in calculating calibration functions. We used available computer programs for most of this study. In addition, we developed new
  • software to compute the Moran statistic to test for spatial autocorrelation among the regression residuals, using the dual of the Voronoi diagram to describe the spatial relationships among the sites. In order to illustrate the sequence of procedures, we
  • used data from the lower peninsula of Michigan to develop a calibration function for July mean temperature and then used Holocene pollen data from central lower Michigan to estimate past temperatures.
  • High-resolution pollen record from core KW31, Gulf of Guinea, documents of the history of the lowland forests of West Equatorial Africa since 40,000 yr ago
  • Africa ; Atlantic Ocean ; Biodiversity ; Forest ; Marine sediment ; Palaeo-environment ; Palynology ; Pollen diagram ; Quaternary ; Stratigraphy ; West Africa
  • Afrique ; Afrique de l'Ouest ; Atlantique ; Biodiversité ; Diagramme pollinique ; Forêt ; Golfe de Guinée ; Palynologie ; Paléo-environnement ; Quaternaire ; Stratigraphie ; Sédiment marin
  • The aims of this paper are to present a new pollen record from the eastern Equatorial Atlantic and to synthesize pollen data from the adjacent continent in order to contribute to the debate on the evolution of the West African forest ecosystems
  • during the last glacial period and the Holocene, and on its relationship with the regional climate. Core KW31 pollen content is discussed taking into account the difference transport agents to the ocean (water and wind). It is compared to the freshwater
  • Glacially redeposited pollen in tills of southern Ontario, Canada
  • Canada ; Diagramme pollinique ; Géographie de l'Amérique ; Interglaciaire ; Moraine de fond ; Ontario ; Palynologie ; Paléo-environnement ; Pléistocène ; Quaternaire
  • Etude de la palynologie des tills et des sédiments glaciolacustres dans 10 sites du sud de l'Ontario, afin de comparer le contenu en pollens de dépôts glacigéniques d'âges différents.
  • C14 dating ; Glaciation ; New Zealand ; North Island ; Palaeobotany ; Palaeogeography ; Palynology ; Pollen diagram ; Quaternary
  • Datation C 14 ; Diagramme pollinique ; Glaciation ; North Island ; Nouvelle-Zélande ; Palynologie ; Paléoflore ; Paléogéographie ; Quaternaire
  • Pollen diagrams and radiocarbon dates from two last glacial and postglacial (Aranuian) sites on the Aupouri Peninsula in the far north of New Zealand are compared with other published palynological and plant macrofossil evidence from the region
  • Biodiversity ; Central Europe ; Climatic variation ; Czech Republic ; Europe ; Holocene ; Mountain ; Palaeobiogeography ; Palynology ; Poland ; Pollen diagram ; Quaternary ; Tree line
  • Biodiversité ; Diagramme pollinique ; Europe ; Europe centrale ; Holocène ; Limite supérieure de la forêt ; Montagne ; Palynologie ; Paléobiogéographie ; Pologne ; Quaternaire ; Tchèque république ; Variation climatique
  • This study aims at summarising the development of the timberline position in the Hercynian mountains of Central Europe based on detailed interpretation of the previously published data (Vosges, Schwarzwald, Harz) and on newly constructed pollen
  • diagrams from Krkonoše and Hrubý Jeseník profiles.
  • A high altitude pollen diagram from Mount Kenya: its implications for the history of glaciation in Palaeoecology of Africa and the surrounding islands. Volume 14.
  • Afrique ; Diagramme pollinique ; Etage afro-alpin ; Glaciation ; Géographie de l'Afrique ; Hobley Valley ; Holocène ; Kenya ; Mont Kenya ; Montagne ; Palynologie ; Quaternaire zone chaude ; Zone intertropicale
  • Correction factors for Holocene pollen diagrams
  • Correction ; Diagramme pollinique ; Géographie physique ; Palynologie ; Technique de recherche ; Tourbière
  • Altitude ; Australia ; Climatic variation ; Forest ; Palynology ; Pollen diagram ; Quaternary ; Tasmania ; Vegetation
  • Altitude ; Australie ; Diagramme pollinique ; Forêt ; Palynologie ; Quaternaire ; Tasmania ; Variation climatique ; Végétation
  • This paper will describe the late glacial and Holocene pollen and vegetation record from Poets Hill Lake and compare the results with the other sites from varying altitudes in the same region. This comparison suggests that the development of pollen
  • Climatic influences of deglacial drainage changes in Southern Canada at 10 to 8 KA suggested by pollen evidence
  • Canada ; Climatic variation ; Deglaciation ; Meltwater ; Palaeo-environment ; Palaeoclimate ; Palynology ; Pollen diagram
  • Canada ; Diagramme pollinique ; Déglaciation ; Eau de fonte ; Palynologie ; Paléo-environnement ; Paléoclimat ; Variation climatique
  • Lagoa Travessa : a Holocene pollen diagram from the south-west coast of Portugal
  • Coastal environment ; Ecosystem ; Holocene ; Human impact ; Humid environment ; Palynology ; Peat ; Pollen analysis ; Portugal ; Quaternary ; Vegetation dynamics
  • Alaska ; C14 dating ; Palaeogeography ; Palaeozoology ; Palynology ; Pleistocene ; Pollen diagram ; Quaternary ; Stratigraphy
  • Alaska ; Datation C 14 ; Diagramme pollinique ; Palynologie ; Paléofaune ; Paléogéographie ; Pléistocène ; Quaternaire ; Stratigraphie
  • The AA. discuss the vertebrate remains recovered from Epiguruk, review the 1967-1969 pollen data and new pollen spectra, and briefly present the few additional fossil determinations available from the bluff. The data show that the Epiguruk area
  • Late Quaternary lacustrine pollen records from Southwestern Beringia
  • Forest ; Magadan ; Palaeogeography ; Palynology ; Pollen diagram ; Quaternary ; Russia ; Tundra ; Vegetation
  • Diagramme pollinique ; Forêt ; Magadan ; Palynologie ; Paléogéographie ; Quaternaire ; Russie ; Toundra ; Végétation
  • Climatic change on the Iberian Peninsula recorded in a 30 000 yr pollen record from Lake Banyoles
  • Climatic variation ; Deglaciation ; Gerona ; Isotope analysis ; Palaeoclimatology ; Palynology ; Pollen diagram ; Quaternary ; Spain
  • Analyse isotopique ; Diagramme pollinique ; Déglaciation ; Espagne ; Gerona ; Palynologie ; Paléoclimatologie ; Quaternaire ; Variation climatique
  • Alaska ; Bay ; Bristol ; C 14 dating ; Climatic variation ; Palaeo-environment ; Palynology ; Pollen diagram ; Postglacial ; Quaternary
  • Alaska ; Baie ; Bristol ; Datation C 14 ; Diagramme pollinique ; Palynologie ; Paléo-environnement ; Postglaciaire ; Quaternaire ; Variation climatique
  • Pollen analysis of sediment cores from Grandfather and Ongivinuk Lakes reveals a record of postglacial vegetation and climate change in the northern Bristol Bay region. The chronology is based on six conventional 14C dates of bulk organic matter
  • from the Grandfather core. The unique features of these pollen records emphasize the spatial complexity of late Quaternary vegetation and climate history in eastern Beringia.