Bestandes- und Freilandnährstoffeinträge in Zentralsulawesi (Indonesien)

Köhler, Stefan

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

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