Projects

Projects

Open Position in Peatland Monitoring

We are looking for a highly motivated candidate to work with us in the European BIODIVERSA project “ReVersal – Restoring peatlands of the nemoral zone under conditions of varying water supply and quality”. The main objective of the project funded within the call “Conservation and restoration of degraded ecosystems and their biodiversity, including a focus on aquatic systems” is to develop a spatio-temporally explicit indicator system for peatland restoration success across peatland sites and across spatio-temporal scales.

The successful candidate will work in an international and interdisciplinary team and will be responsible for the development of an upscaling approach from local field measurements via very-high resolution UAS-data to the satellite-scale. The candidate will derive peatland restoration indicators directly from multi-sensor remote sensing signals and model more complex indicators such as potential gas fluxes using machine learning methods.

The position announcement can be found here:

https://www.uni-muenster.de/Rektorat/Stellen/ausschreibungen/st_20212611_sk7.html

 

Projects

Earth Observation Network in the Bavarian Forest

From October 18-22 the Remote Sensing and Spatial Modelling Research Group met together with colleagues from different research institutions for a first joint meeting of our “Earth Observation Network” in the Bavarian Forest. During “Walk&Talk”, presentations and joint data acquisition in the field, we exchanged ideas and planned joint research and teaching activities in the field of remote sensing.

More information and pictures can be found on the pages of the Earth Observation network.

Projects

Repetition of grass (Elymus athericus) monitoring

After two years, we repeated the flights for the Elymus athericus grass monitoring project using multispectral imaging data on the Hallig Nordstrandischmoor. The data will be compared with the 2019 classification results to quantify the spread of this grass species. For more information about our project please read the following open access publication:

Oldeland, J., Revermann, R., Luther-Mosebach, J. et al. New tools for old problems — comparing drone- and field-based assessments of a problematic plant species. Environ Monit Assess 193, 90 (2021). https://doi.org/10.1007/s10661-021-08852-2

 

Projects

Flight campaign on bird sanctuary islands

As part of a master thesis and a research project, Dr. Jan Lehmann and the students Candy Fahrenholz and Henning Schneidereit accomplished a field campaign in the national park “Western Pomerania Lagoon Area” from the 13th of June until the 17th of June. With special permits of the national park, which are needed because of strict flight and entry bans, and in close cooperation with the staff of the national park, the two bird sanctuary islands, including active breeding colonies, were mapped with the WingtraOne. A multispectral dataset with information of about 700 hectare was collected and the reaction of the birds towards the drone were observed.

The campaign did work out exceedingly well and now we are looking forward to analyse the dataset in aspects of vegetation and structure as well as for the inventory of breeding birds.

 

Take-Off

 

Pre-Flight Setup

 

Taking calibration images

 

Checking our the data after successful flight

 

False-Color Imagery with 8cm GSD

 

Beautiful pattern

 

False-Color Orthomosaic of the Barther Oie

 

RGB Orthomosaic with 1.8cm GSD

 

 

 

 

Birds (Terns) sitting relaxed on their nests

 

Very high-resolution for bird counting

Projects

LIDAR Flights in Bog Ecosystem

With bright sunshine, blue skies and very hot weather (temperatures above 35 degrees) we made our first test flights in the Vechta Moor. Besides flying over a renaturalized and rewetted part of the bog ecosystem with our Wingtra (Reliable as always!), we have recorded a small area with a LIDAR system. Despite the difficult conditions (always strong thermal activites due to the heating of the black bare peat areas) the LIDAR flights were quite successful. Tests were carried out at different altitudes and different speeds. Now the data will be evaluated to find the optimal settings for flying over a bog ecosystem.

WingtraOne ready for takeoff

 

The basecamp. The shade was very welcome with temperatures above 35 degrees that day.

 

Preparation of the LIDAR flights.

 

Take-Off

 

The automatic waypoint flight is activated.

 

Always keep an eye on the drone.

 

Landing after a successful flight.

Projects

WingtraOne flights for wild bee monitoring

Within the context of a bachelor thesis we flew over a section of the renaturalized meadows along the river Ems with our WingtraOne drone. The image data (RGB and multispectral) will be evaluated with regard to open soil areas, as these areas can represent important habitats for wild bees. The flights were carried out under perfect weather conditions (blue cloudless sky and no wind).

A total area of 40ha was recorded.

Real-time flight monitoring with the tablet.

Preparations shortly before the take-off.

Ready to go…

Recording of the white reference panel for later calibration of the multispectral data.

Photo credits: All photos by Christoph Scherber.

Projects

Acquisition of Inselberg vegetation in Brazil

Our master student Milan is currently using our Mavic Pro in Brazil. The aim of his thesis is to determine the water holding capacity of Inselberg vegetation. Therefore, he is flying along several steep sidewalls. More information will follow soon…

Sidewall vegetation of an Inselberg in Brazil. We will calculate the vegetation cover to determine the water holding capacity of an Inselberg.

Projects

Mapping of invasive grasses in Brazil

As part of a master’s thesis, we used our DJI Mavic 2 to map invasive grass patches in the Serra do Cipo National Park. During the flights windy and strong thermal conditions occurred. Nevertheless, we were able to successfully fly over five areas with different levels of invasion. The data will be used as ground truthing to scale up to the entire national park with the help of satellite data.

 

The studied invasive grass species (yellow)

 

Going to collect drone image data by bicycle

 

Image data collection using our Mavic 2 drone.

 

Beautiful working conditions in the Serra do Cipo Nationalpark

 

Projects

UAS based glacier mapping and monitoring in Alps

As of last week, we have began research dealing with glacier mapping and monitoring focuesed on a rock glacier in Kaunertal, Ötztal Alps, Austria. The work will be apart of the Master’s thesis of Jordan Bates, an Erasmus Mundus MSc. in Geopsatial Technologies student. Currently the rock glacier is being mapped with Unmanned Aircraft Systems (UAS) and Terrestrial Laser Scanners (TLS) inorder to combine the two data collection means to supplement their individual strengths. The TLS data will provide a more precise measurement with LiDAR along with a view from underneath the face of the glacier and the UAS data will provide a better overall picture from the air with photogrammetry techniques from optically collected data. It is planned that joining these two datasets will create a more complete and accurate depiction of the glacier than more traditional methodologies. This data will then be compared to previous data collections to measure and track its movement.

Aerial view of the rock glacier in Kauntertal, Austria that is being observed in this study

 

Because of its size, easy set up, and sensor quality, the Mavic 2 Pro is the the sUAS of choice for this work that includes hikes to the top of an alp.

 

Initial processing of the 3D model and in view is the face/front of the rock glacier

Projects

WingtraOne for biotope type mapping

In cooperation with the LANUV, our student and drone pilot Jan-Patrick Bollow deployed our WingtraOne to collect multispectral image data in a large bog ecosystem. The aim of the project is to generate objectively comprehensible geometric demarcations in order to distinguish the occurring biotope types. The resulting orthomosaic is covering more than 200ha with a GSD of around 7 cm.

 

WingtraOne after vertical Take-Off

 

Ready-to-go…

 

Office of a drone pilot

 

Image section of the resulting multispectral orthomosaic (green, blue and nir channel with standard deviation)