CRC 990 - EFForTS - Georg-August-Universität Göttingen

CRC 990 Ecological and Socioeconomic Functions of Tropical Lowland Rainforest Transformation Systems (Sumatra, Indonesia) Issue 1 / August 2013
page 5 von 32
- Quantify nutrient leaching losses with land-use
changes
Current status:
- soil NO, N2O, CH4, CO2 fluxes: monthly measurements
for 1 year in 4 subplots/site
• N2O, CH4, CO2: November 2012 to July 2013
is completed; analysis at UGOE in progress
• NO: March 2013 to July 2013 is completed
- Oil-palm leaf axils trace gas fluxes: measurements
for 1 year in the oil palm sites
• N2O, CH4, CO2: February to June 2013 is completed;
analysis at UGOE in progress
- Gross rates of soil N cycling: 1x measurement in
2 subplots/site
• 15N pool dilution in the field is completed;
analysis at UGOE in progress
- Soil physical and chemical characteristics: 1x
measurement in 5-10 subplots/site at depths:
0-0.1, 0.1-0.3, 0.3-0.5, 0.5-1.0, 1.0-1.5 and 1.5-
2.0 m
• Field sampling in progress
- Nutrient leaching losses: biweekly to monthly
sampling for 1 year in 2 subplots/site
• February 2013 to June 2013 is completed;
analysis at UGOE starts in August 2013
Group B
B01
Title: Structure, stability and functioning of macro-invertebrate
communities
Team: Ulrich Brose (UGoe), Ahmad Faradjallah (IPB),
Andrew Barnes, Malte Jochum (PhD students)
Aim:
Investigation of changes in the invertebrate
community of the litter layer following rainforest
transformation to plantation agriculture
Current status:
- Animal sampling of all 32 plots completed
- Animals (8655 individuals) sorted into major
groups and morphospecies
- Stable isotope and stoichiometry analyses – export
permit not yet granted → food-web analyses
delayed
- Import of dead leaves from German forests for
experiments on ecosystem functioning is delayed
→ analyses of ecosystem functioning
planned for next year
B02
Title: Impact of rainforest transformation on phylogenetic
and functional diversity of soil prokaryotic
communities in Sumatra (Indonesia)
Team: Rolf Daniel (UGoe), Nisa Mubarik, Anja Meryandini
(IPB), Martin Engelhaupt (PhD student)
Aim:
Investigation of changes in soil prokaryotic diversity
associated with rainforest transformation
to plantation
Current status:
- Soil sampling from all plantations (oil palm, rubber,
jungle rubber) in the Harapan and Bukit Duabelas
landscapes
- Reference sites sampled (Bukit Duabelas Rainforest)
– 3 of the 4 plots, 1 plot flooded, samples
still in Jambi; Export Permit in progress
- Reference sites (Harapan Rainforest) not sampled
yet (postponed to fall 2013)
- Processing of soil samples (plantation samples)
à DNA extraction, generation of 16S rRNA amplicons
for Bacteria and Archaea
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