1 / 15

Research group Palaeoecology and Landscape ecology (P&L)

Research group Palaeoecology and Landscape ecology (P&L) . Temperate Palaeoecology: Van Geel, Van Mourik Landscape ecology: Kooijman, Sevink Tropics Palaeoecology: Hooghiemstra, Van Boxel Vegetation ecology: Duivenvoorden, Cleef. Palaeoecology & Landscape ecology.

dionne
Download Presentation

Research group Palaeoecology and Landscape ecology (P&L)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Research groupPalaeoecology and Landscape ecology(P&L) Temperate Palaeoecology: Van Geel, Van Mourik Landscape ecology: Kooijman, Sevink Tropics Palaeoecology: Hooghiemstra, Van Boxel Vegetation ecology: Duivenvoorden, Cleef

  2. Palaeoecology & Landscape ecology Peat archive sediment archive Rationale: • To understand present-day climate and ecosystems, and to anticipate future change, we need a reference • This reference is the record of past changes found in peat archives and sediment sequences

  3. Main research activities of P & L study of records of past climate change inferred from vegetation change at different time-scales: Neogene (25 Ma >), Pleistocene (2.5 Ma >), Holocene (10 ka >), Anthropogene (2 ka >) study of the present status and dynamic history of ecosystems societal relevant research: nature conservation, Kyoto Protocol Carina Hoorn Scientific American May 2006

  4. Main Research Topics 1Reconstruction of ecosystem dynamics and climate change Van Geel, Hooghiemstra et al. Temperate: Europe; Siberia Tropics: Mexico to Bolivia (20°N – 20°S) • rainforest, dry forest, savanna, montane forest, páramo • Subjects: • biotic setting: floral evolution, biostratigraphy, vegetation change • abiotic setting: basin development, landscape development, sedimentary and geochemical processes • mechanisms at work: orbital forcing, solar forcing

  5. Main Research Topics 1 (continued) Data synthesis, data-model comparisons Aims: calibration of model output by geological data (international BIOME project) inverse modeling studies (effects of pCO2, temperature, precipitation): sensitivity studies  improved site selection 6000 BP 2000 0 0 m 4100 m Warmer and wetter Cooler and drier Hooghiemstra, Van Boxel et al. Pollen taxa  Ecological groups  Ecosystems PFTs Biomes

  6. Main Research Topics 1 (continued)Reconstruction of ecosystem dynamics Duivenvoorden, Kooijman Tropics: plant diversity • Are Amazonian forests so species rich owing to many different niches being filled by numerous phylogenetically different taxa? Temperate: nutrients Significance of substrate / pH for availability of nutrients

  7. Main Research Topics 2Development of new methodologies Van Geel • Common practice: • palynologists use only ‘traditional’ fossil types • a large number of unknown fossils are ignored • Identification of ‘unknowns’ reveals a wealth of information about past natural and anthropogenic environments: • abundance of herbivores • intensity of fire • euthrophication of water (cyanobacteria) • Aim: improve the quality of palaeo-environmental reconstructions

  8. Main Research Topics 2 (continued) Development of new methodologies 14C clock = fast 14C clock = slow Van Geel, Hooghiemstra & Duivenvoorden • Problematic ‘wiggles’ in the 14C calibration curve has been turned into an advantage: 14C AMS wiggle match dating delivers greater chronological precision + the role of the Sun in climate change can be evaluated • BioTime : • how representative are pollen spectra for plant diversity? • how did plant diversity vary in the past with climate change

  9. Main Research Topics (3) Interaction between biotic & abiotic components in the geo-ecosystems All group members • Proxies: • biotic: pollen, non–pollen palynomorphs diatoms, Corg, charcoal, • abiotic: grain size analysis, inorganic geochemistry (elements) • physical: 14C (solar activity) • stable isotopes (∂13C) and biomarkers • Aim:place climate change-driven vegetation change in its abiotic environment. Keeping in mind: • uplift • basin development • regimes of sediment transport • diagenesis

  10. Project acquisition 2000 – 2006 WOTRO-DGIS: 7 projects WOTRO-Fellowships: 1 project WOTRO-Integrated Programme : 1 project NWO-ALW: 11 projects AlBan : 1 project EU : 2 projects Tropenbos-NUFFIC- COLCIENCIAS: 2 projects IBED: 3 projects Externally funded PhD projects: 2 projects 28 projects

  11. Netherlands: Centre for Isotope Research Free University Amsterdam Netherlands Institute Sea Research (NIOZ) Netherlands Institute Applied Geology (NITG) Netherlands Centre Luminiscence Dating (NLG) RING / ROB Ministry of Agriculture and Nature Management Universities of Nijmegen and Wageningen International: Colombia: Universidad Nacional, Bogotá/ Medellín /Leticia Colombia: Universidad de los Andes Peru: Universidad Nacional para la Amazonia Ecuador : Pontífica Universidad Católica México: Universidad Autónoma de México (UNAM) & ECOSUR Latin American Pollen Database (LAPD) community Germany: Göttingen, Potsdam, Greifswald UK: Bristol, Gloucestershire, Leeds, Leicester, Nottingham, Southampton, York Ireland: Dublin Finland: Helsinki, Turku Sweden: Royal Botanical Museum, Stockholm Denmark: Aarhus Estonia: Tallin Canada: Regina Cooperation

  12. A research highlight Torres, Hooghiemstra A novel 3.2 Ma terrestrial record of Pleistocene ice-ages from the Bogotá Basin Volcanic ash Vivianite 586 m deep bore hole Funza-2 at 2550 m altitude XRF- scanner

  13. A research highlight Abiotic Biotic Facies 285 m 385 m Depositional environments Lacustrine Fluvio-lacustrine Fluvial

  14. A research highlight Torres, Hooghiemstra

  15. Future Research Non-pollen palynomorphs Solar forcingof climate change Basins of Bogotá & Fúquene: harvesting the huge data sets of fine-resolution pollen records  ESPM Amazonia: plant diversity and ice age environments GIS applications for calibrating paleodata to modern data in regional syntheses  CBPG Societal relevant research: Nature restoration and conservation supported by paleo-data  EPS Forensic studies IPCC related research  ESPM Pollen & GIS

More Related