We used measurements from airborne imaging spectroscopy and LiDAR to quantify the biophysical structure and composition of vegetation on a dryland substrate age gradient in Hawaii. Both vertical stature and species composition changed during primary succession, and reveal a progressive increase in vertical stature on younger substrates followed by a collapse on Pleistocene-aged flows. Tall-stat...

Mount Merapi’s eruption has caused damage to the forests in Merapi National Park (MMNP). Nine years after eruption, vertical structure of vegetation can illustrate progress succession. This study aimed analyze tree composition and stratification different forest levels 2010 eruption. The was conducted March 2019 at three stations, namely station A (heavy area), B (moderate C (minor area). Veget...

This paper reports the passive microwave radiometry application for regional assessment of crop growth in India. Brightness temperature (TB) of various vegetation classes observed at 37 GHz using special sensor microwave imager (SSMI) data. during Kharif season in 1 999 in India are analyzed. Vertical as well as hQrizontal polarization brightness temperature is used to derive microwave polariza...

We have developed a new airborne UV lidar for the forest canopy and deployed it in the Landes forest (France). It is the first one that: (i) operates at 355 nm for emitting energetic pulses of 16 mJ at 20 Hz while fulfilling eye-safety regulations and (ii) is flown onboard an ultra-light airplane for enhanced flight flexibility. Laser footprints at ground level were 2.4 m wide for a flying alti...

Insights into vegetation and aboveground biomass dynamics within terrestrial ecosystems have come almost exclusively from ground-based forest inventories that are limited in their spatial extent. Lidar and synthetic-aperture Radar are promising remote-sensing-based techniques for obtaining comprehensive measurements of forest structure at regional to global scales. In this study we investigate ...

− Interferometric decomposition permits the identification of arbitrary scattering mechanisms in two interferometric SAR images and the optimisation of the interferometric coherence, using mathematically independent phase centres related to these scattering mechanisms. Polarimetric SAR interferometry (Pol-InSAR) is sensitive to the distribution of oriented objects in vegetation layers. It has b...

Mejlon, H. 2000. Host-seeking activity of Ixodes ricinus in relation to the epidemiology of Lyme borreliosis in Sweden. Acta Universitatis Upsaliensis. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 577. 42 pp. Uppsala. ISBN 91-554-4842-9 This thesis examines seasonal, diel and vertical distribution patterns of activity of hostseeking Ixodes ricinus ...

Global amphibian declines have been linked to various anthropogenic land uses. Recent studies have documented negative impacts of cropland agriculture and deforestation on amphibians; however, few have examined potential impacts of cattle grazing in wetlands on resident amphibians. Therefore, we measured differences in number of captures and body size of postmetamorphic amphibians, egg mass abu...

Wetlands provide ecosystem goods and services vitally important to humans. Land managers and policymakers working to conserve wetlands require regularly updated information on the statuses of wetlands across the landscape. However, wetlands are challenging to map remotely with high accuracy and consistency. We investigated the use of multitemporal polarimetric synthetic aperture radar (SAR) dat...