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Themenvorschläge für Masterarbeiten / Proposed topics for master theses

Remote Sensing for Habitat Mapping
Contact:
TU Berlin – Prof. Birgit Kleinschmit ()
GFZ Potsdam - Dr. Carsten Neumann ()

Research question:
Can optical remote sensing be utilized to map the spatial distribution of
arthropod habitats?

Project description:What are characteristic arthropods (insects, spiders) in heathlands and where do these species occur? The Heinz Sielmann Foundation collected and determined the species inventory in the Kyritz-Ruppiner Heide, a former military training ground, at 57 plots in 2019. Additionally, plant species abundances and structural vegetation parameters were mapped in situ for each plot. Hence, arthropod groups can be assigned to certain vegetation conditions that define characteristic habitats. We want to examine whether these habitats can be mapped using optical remote sensing at different spatial scales.
A basic understanding of optical remote sensing data and processing methods is required. Based on this, machine learning (classification) methods should be used to calibrate models at different scales from field spectra to multispectral satellite imagery. As a result, we expect distribution patterns of animal habitats that vary depending on the spatial resolution of observation. The work is seen as a contribution to international efforts for global biodiversity monitoring. The overall goal is to better understand patterns and trends of biodiversity and to develop target-oriented habitat management measures using remote sensing as a monitoring tool. Spatial monitoring is particularly required for wide, unfragmented heathlands in international protected area networks.
Do you want to become part of this research? The work belongs to the NaTec-KRH project conducted by Heinz Sielmann Foundation and German Research Centre for Geosciences GFZ Potsdam. (www.heather-conservation-technology.com)
Drone Imagery for Mapping Resprouting after Heath Mowing

Contact:TU Berlin – Prof. Birgit Kleinschmit ()
GFZ Potsdam - Dr. Carsten Neumann ()
Project description:
High-resolution images were recorded by RGB-drones before mowing and afterwards for the years 2017-2020. At the same time, extensive field surveys were carried out to map vitality, species composition, vegetation structure and sprouting. We want to show that there are optical patterns and
vitality indicators that can be related to the potential of resprouting. For that purpose, different machine learning methods will be tested to combine field samples with UAV time series. The work aims at testing the hypotheses that resprouting can be mapped before and after mowing in drone imagery.

The work is seen as a contribution to international efforts for global biodiversity monitoring. The overall goal is to better understand patterns and trends of biodiversity and to develop target-oriented habitat management measures using remote sensing as a monitoring tool. Spatial monitoring is particularly required for wide, unfragmented heathlands in international protected area networks.

Do you want to become part of this research? The work belongs to the NaTec-KRH project conducted by Heinz Sielmann Foundation and German Research Centre for Geosciences GFZ Potsdam. (www.heather-conservation-technology.com)
Estimation of soil moisture in a pre-alpine area with drone based TIR Data
Background Drought and soil moisture stress is an increasing threat for ecosystems and agriculture in times of climate change. Therefore, monitoring of ongoing trends at high temporal resolution over larger areas is crucial for adaptation and forecasting. Within the project Cosmic Sense several thermal infrared (TIR) datasets were acquired at an pre-alpine grassland site. These datasets open following questions:
 
  • Which spatial patterns of soil moisture exist?
  • Is it possible to model soil moisture patterns of deeper soil horizons with the thermal data?
  • How do these patterns change in the course of a day?
The topic is related to the research project ‘Cosmic Sense’ which aims to better understand the Cosmic Ray signal in relation to soil moisture at different testsites.
Requirements:
Basic remote sensing knowledge / attendance of the course “Remote Sensing (MA UP WP 1.4)
Research area: Fendt /Bavaria
Related to:
Cosmic Sense

Contact:
Prof. Dr. Birgit Kleinschmit (TUB) –

VeroniKa Döpper (TUB) -

Assessing of drought and wetness damages of mid-European tree species with hyperspectral imagery

Background: Within the vegetation periods 2017 and 2018 two extreme weather events took place, which affect the health status of mid-European tree species. After an unusual wet summer in 2017, the year 2018 yielded records in temperature and low precipitation. Therefore, different tree species show stress pattern (e.g. smaller leaf size, loss of part of the crown). There is just limited knowledge available about the impact of the weather extremes as well as the adaptation strategies of the species. The proposed theses tries to assess the behavior of three species (beech, alder, ash) with bio-physical measurements as well as  spectral measurements from a crane-based platform.
Objectives:  The aim of the thesis is to evaluate the potentials of Remote Sensing to detect stress patterns of mid-European deciduous tree species to extreme weather events and subsequent malnutrition.  The results will be compared to biophysical measurements, .including fluorescence, stomatal conductance, CO2 exchange, water leaf content and more.
Research area: TERENO forest site in Demmin (Mecklenburg-West Pomerania)
Related to:  TERENO crane site in Demmin (co-operation GFZ and TU Berlin)
Detection of the „ash dieback“ phenomena with remote sensing technology  
 
Background: Chalara dieback of ash is a serious disease of ash trees caused by a fungus called Chalara fraxinea (C. fraxinea), including its stage, Hymenoscyphus pseudoalbidus (H. pseudoalbidus). The disease causes leaf loss and crown dieback in affected trees, and usually leads to tree death. Remote Sensing methods might be useful to monitor the pest attacks. The thesis will include spectral measurements from a crane-based platform, which will be combined with drone measurements of a larger surrounding area and bio-physical measurements of gas-exchange, fluorescence, leaf water content and eventually sap flow measurements in the vegetation period of 2019.
Objectives: The aim of the thesis is to evaluate the potentials of Remote Sensing to detect the health status of affected ash trees. The results will be compared to terrestrial in-situ mappings of the region and the biophysical measurement. There is the possibility to include the knowledge in an inverse model to retrieve a transferrable relation between tree health status and the related bio-physical parameters
Research area: TERENO forest site in Demmin (Mecklenburg-West Pomerania)
Related to: TERENO crane site in Demmin (co-operation GFZ and TU Berlin)
 
Exploring the relation of soil moisture content to Cosmic Ray Sensing and Satellite Information (CosmicSense)

 
Contact:
Prof. Dr. Birgit Kleinschmit – Birgit.kleinschmit@tu-berlin.deDr. Michael Förster - Michael.foerster@tu-berlin.de  

Background:
The exchange of water between atmosphere, biosphere, and hydrosphere can be viewed as a result of complex interactions of dynamic feedback mechanisms, where soil moisture content acts as the key state variable. Novel approaches are required to handle land surface complexity and scale dependency of water fluxes. State-of-the-art observations of soil moisture content are ranging from continuous point-scale measurements via field-scale snapshots to remote sensing products on the basin scale and beyond. Cosmic-ray neutron sensing (CRNS) measures the presence of water by sensing changes in neutron density above the ground. In the planned project comprehensive observations by CRNS, remote sensing and complementary methods will be used concertedly with hydrological and land-surface models at the catchment-scale to infer also groundwater recharge and atmospheric fluxes.
Objectives:
This thesis aims at evaluating the relations of the CRNS signal to optical satellite data. Therefore, at two stations in Berlin/Brandenburg the cosmic ray signal was recorded together with field-based soil moisture measurements during the season of 2017. These two information will be complemented by remote sensing data of the satellites Sentinel-2 and Landsat-8, which acquired data in similar time-steps. The relations will be revealed by advanced machine learning algorithms.
Requirements:
Basic remote sensing knowledge / attendance of the course “Remote Sensing (MA UP WP 1.4)”
Research area: Berlin and Gülpe in the Havelland area (Germany)
Related to: CosmicSense

Master thesis in the context of an internship in a non-university research institution or companies

Non-university research institution
 
RPL Agroscience www.agroscience.de

MCC - Mercator Research Institute on Global Commons and Climate Change
www.mcc-berlin.net
 
Naturpark Westhavelland www.westhavelland-naturpark.de

Small and medium-sized companies
Luftbild Umweltplanung www.lup-umwelt.de

Plante Labs www.planet.com

Masterarbeiten (laufend) / Master theses (current)

Stephanie Wüstenhagen
A Comparative Analysis of Sentinel-2 and Landsat 8 imagery by Using the Example of the Invasive Species Acacia dealbata in Central Chile.

Anna Probst
Modellierung oberflächennaher Bodenfeuchte anhand drohnenbasierter TIR Daten und Analyse ihrer saisonalen räumlichen Verteilung in Marquardt.

Kayynat Shafiq
Identification of burn severity after the forest fires in Truenbreitzen using remote sensing techniques.

Hyunjae Kim
Impacts of land cover on heat and water fluxes in Berlin.

Anna Katharina Ackermann
Assessing the past state of the tundra-taiga-ecotone in Northern Siberia from space" und "Remote Sensing for Habitat Mapping.

Bronwyn L. Dyson
Using low-cost flow cytometry to establish high-temporal abundance estimates of phytoplankton in Lake Stechlin and the LakeLab

 

Masterarbeiten (abgeschlossen) / Master theses (completed)

2020

Anjes Bloch
Rapid Assessment of forest storm damages using PlanetScope and Sentinel-2 satellite imagery.

Natalie Arnold
Investigation on the vitality of selected urban trees in parks in Berlin and Brandenburg

Irina Stockmann (Uni Potsdam)
Biomasseschätzung in einem temperierten Mischwald auf der Basis von Höheninformationen und multitemporalen RapidEye Daten.

 

2019

Balázs Lajos Dienes
Intra-annual and inter-generic variability of transmissivity of solar radiation through crowns of urban trees and its impact on solar radiation on building facades – a modelling approach

Jill Leonie Wabra (geb. Wagner)
Maximum Entropy Modelling and Classification of Pinus radiata Invasion in Central Chile

Kathrin Frank
Explaining occurrence of different wild bee species groups with terrain indices, climate parameters, land-cover structure, and spectral indices.

Isabel Blanke
How does precipitation influence the backscatter signal of grasslands?

Gina Maskell
How useful is Twitter data for the delineation of flood extent maps? A comparison of satellite-derived and Twitter-derived flood assessments

2018

Sophie Renner
Urban blue infrastructure patterns – a review of European cities.

Sara Muznik
Assessing the quality of urban green spaces in European cities. Case study Berlin.

Alexandra Rios
Modelling of Invasive Plant Species in Central Chile -  Spreading patterns of Ulex europaeus and Acacia dealbata.

Liubov Shirotova
Estimating biophysical parameters of larix gmelinii using rapideye satellite imagery. The case study of Khatanga, central Siberia, Russia.

Rayk Albrecht
„Forest Cover Mapping and Multi-Temporal Analysis of Tugai Forests in Central Asia using Sentinel-2 and Landsat data.

 

2017

Roman Wolf
Linear Spectral Unmixing of Sentinel2 time series for detecting invasion of Pinus radiata in the Maule Region in Chile.

Ann-Kathrin Holtgrave
Estimation of Soil Moisture in Vegetation Covered-Floodplains with Sentinel-1 SAR Data Using Support Vector Regression

Sara Knuth
Does urban structure trigger the spread of canine distemper virus in Berlin red foxes?

 

2016

Alexandra Singleton
Assessing drivers of vegetation response in the  lower reaches of the Tarim River, China using boosted regression trees.

Niklas Moran
An Automatic Tool for EUNIS Habitat Classification Using Ontologies and SEaTH.

Nicolas Specklin
Assessing desertification processes by remote sensing data in the Safi Region, Marocco.

 

2015

Cornelius Jopke
Change Detection analysis for meadow monitoring using Rapid Eye satellite data.

Nele Steimetz (in Kooperation mit der Uni Potsdam)
Machine learning regression algorithms for biophysical parameter retrieval for Alder and Beech forests in North-East Germany

Sabine Koch (in Kooperation mit dem Institut für Geodäsie)
Storage and Querying of CityGML Models in BaseX -  Evaluation of the usage of a native XML database system for 3D city models

Christine Schwarzer
Klassifikation von Offenlandvegetation in einem Natura 2000 Gebiet – der Effekt von hoher räumlicher, spektraler und temporaler Auflösung

Ana Gonzales
Analysis of potential distribution and size of photovoltaic systems on rural rooftops  -  A contribution to an optimized local energy storage system with a remote sensing and GIS-based approach in Swabia, Germany

Lisa Heinsch
Agent-based modeling of human decisions on residential land uses in Berlin

Kyle Pipkins
A Comparison of Feature Selection Methods for Multitemporal Tree Species Classification

Christian Schulz
Quantifying land cover and landscape diversity changes at the caatinga (2001-
2012) – Landscape pattern analysis with modis land cover products

Eva Tsimeka
Tree species classification using intra-annual Rapid-Eye time series A case study: in Rhineland Palatinate, Germany

Kathrin Ward (in Kooperation mit HU Berlin)
How do urban structure influence the urban heat island effect? - A review of European cities.

2014

Pierre-Adrien Dugord
Assessing the influence of land use Patterns on urban climate and citydwellers vulnerability toward heat stress

Guilherme Henrique Braga Klaussner
Assessing Urban Environmental Justice in two subprefectures of São Paulo, Brazil – a GIS-based synoptic analysis 

 

2013

Adina Tillack
Estimation of Seasonal Leaf Area Index  in an Alluvial Forest Using High Resolution Satellite-based Vegetation Indices

 

2012

Marlen Diederitz (in Kooperation mit HU Berlin)
Szenarienbasierte Analyse der Versorgung mit Naherholungsflächen für die Stadtregion Berlin 2030

 

2011

Iftikhar Ali
Investigating the Potential of TerraSAR-X time series for the detection of swath events in NATURA 2000 grassland habitats

Theresa Garske
When is a city green? - Eine GIS-basierte Methode zur Ermittlung der städtischen Grünflächen-Versorgung für Erholungszwecke
Masterarbeit Garske Zusammenfassung

Rolf Breitschaft
Potentiale von Geographischen Informationssystemen in der Immobilienwirtschaft

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