Markus Immitzer

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Tree species diversity is a key parameter to describe forest ecosystems. It is, for example, important for issues such as wildlife habitat modeling and close-to-nature forest management. We examined the suitability of 8-band WorldView-2 satellite data for the identification of 10 tree species in a temperate forest in Austria. We performed a Random Forest(More)
Comparative analysis of different retrieval methods for mapping grassland leaf area index using airborne imaging spectroscopy. Int. Article history: Available online xxx Keywords: Leaf area index Radiative transfer model Look-up table Narrow band vegetation index Predictive equation Sample size a b s t r a c t Fine scale maps of vegetation biophysical(More)
Only well-chosen segmentation parameters ensure optimum results of object-based image analysis (OBIA). Manually defining suitable parameter sets can be a time-consuming approach, not necessarily leading to optimum results; the subjectivity of the manual approach is also obvious. For this reason, in supervised segmentation as proposed by Stefanski et al.(More)
The potential of optical remote sensing data to identify, map and monitor croplands is well recognized. However, clouds strongly limit the usefulness of optical imagery for these applications. This paper aims at assessing cloud cover conditions over four states in the tropical and subtropical Center-South region of Brazil to guide the development of an(More)
The Black Grouse (Tetrao tetrix L.), listed in Annex 1 of the European Bird Directive, inhabits the vulnerable alpine treeline ecotone. Reacting sensitively to modifications of the environment, it can be regarded as an indicator species. To assess summer habitat use, we measured habitat parameters and recorded faeces (intestinal droppings) of Black Grouse(More)
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