dc.contributor.advisor | Gerhard, Gerold Prof. Dr. | de |
dc.contributor.author | Köhler, Stefan | de |
dc.date.accessioned | 2012-11-06T15:54:19Z | de |
dc.date.accessioned | 2013-01-18T11:29:13Z | de |
dc.date.available | 2013-01-30T23:50:15Z | de |
dc.date.issued | 2012-11-06 | de |
dc.identifier.uri | http://hdl.handle.net/11858/00-1735-0000-000D-F07D-6 | de |
dc.identifier.uri | http://dx.doi.org/10.53846/goediss-2414 | |
dc.format.mimetype | application/pdf | de |
dc.language.iso | ger | de |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | de |
dc.title | Bestandes- und Freilandnährstoffeinträge in Zentralsulawesi (Indonesien) | de |
dc.type | doctoralThesis | de |
dc.title.translated | Throughfall- and freeland deposition in Central Sulawesi | de |
dc.contributor.referee | Gerhard, Gerold Prof. Dr. | de |
dc.date.examination | 2012-07-03 | de |
dc.subject.dnb | 550 Geowissenschaften | de |
dc.subject.gok | YC 000 | de |
dc.subject.gok | QBD 000 | de |
dc.description.abstracteng | Supra-regional deposition of nutrients in
tropical rainforests represents an important source of nutrients
for these ecosystems. Increasing loads of anthropogenic emitted
material into the sensitive nutrient cycles of tropical rainforests
lead to a shift in the nutrient balance connected with a loss of
richness off species. Measuring of nutrient deposition in tropical
areas is mostly difficult because of a lack of infrastructure in
remote areas, and in mesoscalic areas it is even impossible. Both
the transport of samples to the laboratory and the determination of
low-concentrated nutrients in rainwater samples are difficult.
Based on ion exchange resin, a passive Ion Exchange Resin-collector
(IER-collector) has been developed. The sampler allows collecting
bulk deposition samples integrated over a period of approximately
one month at field sites. Laboratory tests showed that the
IER-collectors are able to absorb 80-99% of solute ion loads,
depending on element specific properties and different
concentrations. Correction factors for the calculation of the
all-in-all nutrient deposit load were necessary because in the
extraction only 49 100% of the loaded mass were found depending on
element specific characteristics. The comparison different sampler
types revealed a correlation between percolation speed and fixation
rate on the IER surface. Tests with simulated hard-rain-events of
more than 300 mm h-1 and the detection of extremely low nutrient
concentrations showed that IER-collectors are suitable for use in
field sites. Nearly identical deposited loads between the two
sampling systems (conventional bulk water collectors
(BWS-collector) versus IER-collectors) were found for the elements
calcium (Ca), iron (Fe), magnesium (Mg), manganese (Mn), sodium
(Na) and phosphorus (P). Results of the two measuring systems
differed between 80% 132%, depending on the element. For aluminium
(Al) and nitrate (NO3-N) higher results with more than 400% were
found in the IER-collectors. This could be explained with low
concentrations in rainwater samples. The deposition of potassium
(K) was underestimated in IER-collectors (65%). Generally higher
deposition loads were found in IER-collectors compared to
BWS-collectors. IER-collectors deliver more precise result because
a higher concentration of elements in extraction solutions were
better detectable at analyse instruments. In the framework of the
Sonderforschungsbereich (SFB) 552, at 13 sites of the 2310 km | de |
dc.contributor.coReferee | Jungkunst, Hermann Prof. Dr. | de |
dc.subject.topic | Geosciences and Geography | de |
dc.subject.ger | atmosphärische Depositionseinträge | de |
dc.subject.ger | Indonesien | de |
dc.subject.ger | Pasivsammler | de |
dc.subject.ger | Zentralsulawesi | de |
dc.subject.ger | Nährstoffeinträge | de |
dc.subject.ger | Waldökosysteme | de |
dc.subject.eng | atmosphäric deposition | de |
dc.subject.eng | Indonesia | de |
dc.subject.eng | Centralsulawesi | de |
dc.subject.eng | bulk deposition | de |
dc.subject.eng | passiv collectors | de |
dc.subject.eng | nutrient deposition | de |
dc.subject.bk | 38.03 Methoden und Techniken der Geowissenschaften | de |
dc.subject.bk | 38.81 Atmosphäre | de |
dc.subject.bk | 38.84 Meteorologie: Sonstiges | de |
dc.subject.bk | 38.95 Geoökologie | de |
dc.identifier.urn | urn:nbn:de:gbv:7-webdoc-3775-4 | de |
dc.identifier.purl | webdoc-3775 | de |
dc.affiliation.institute | Fakultät für Geowissenschaften und Geographie | de |
dc.identifier.ppn | 737899034 | de |