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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.

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research group palaeoecology and landscape ecology p l

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

palaeoecology landscape ecology
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
main research activities of p l
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

main research topics 1 reconstruction of ecosystem dynamics and climate change
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
main research topics 1 continued d ata synthesis data model comparisons
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

main research topics 1 continued reconstruction of ecosystem dynamics
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

main research topics 2 development of new methodologies
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
main research topics 2 continued development of new methodologies
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
main research topics 3 interaction between biotic abiotic components in the geo ecosystems
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
project acquisition 2000 2006
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

cooperation
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
a research highlight
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

a research highlight1
A research highlight

Abiotic

Biotic

Facies

285 m

385 m

Depositional environments

Lacustrine

Fluvio-lacustrine

Fluvial

a research highlight2
A research highlight

Torres, Hooghiemstra

future research
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

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