<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>65038</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>poster</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Effect of Carbon and Nitrogen on Growth of the Oligotrophic and  Extremotolerant Fungus Knufia petricola</title>
    <abstract language="eng">Introduction: Rock-inhabiting black fungi are renowned for their constitutive melanin production, extremotolerance and ubiquitous colonization of oligotrophic, natural or anthropogenic subaerial surfaces, including marble monuments and solar panels. Knufia petricola is a model for these fungi as it is genetically amenable and has their typical characteristics. It is capable of colonizing and deteriorating minerals and produces extracellular polymeric substances that facilitate attachment. &#13;
Objectives: The objective of this study is to understand how such an organism is able to grow in environments depleted of C and/or N.&#13;
Method: K. petricola growth parameters (colony extension and thickness, biomass, CO2 respiration and carbon-use efficiency (CUE)) were analysed for different C to N ratios (C:N), changing both the C and N concentrations and sources. The study utilized a dual-scale approach, examining biofilm formation on agar (macroscale) and growth of a single cell into a microcolony in a microfluidic device (microscale). This methodology provided insights into the nutritional requirements and growth behaviours of K. petricola across different spatial scales.&#13;
Findings: Our macroscale analysis indicated optimal growth at the C:N ratio of 60. The morphological analysis demonstrated that when nitrate is utilized as the N source, colonies tend to exhibit filamentous growth at their edges, especially when glucose is available as C source. In contrast, when ammonium is the N source, the colony surface appears smooth (Fig. 1A). Moreover, C or N depletion led to higher substrate penetration, mostly through filaments at the edge of the biofilm. Notably, the lowest carbon concentration yielded reduced biomass C:N ratio and the peak biomass C:N ratio was observed at the medium C:N ratio of 60, suggesting a potential correlation between C:N ratio and optimal growth (Fig. 1B). The CUE was however quite low, ca. 0.4-0.6, being lowest when C and N were limiting. Concurrently, microscale analyses of single cells revealed that increasing the C:N ratio from 0.6 to 60 caused (1) shorter cell cycles and (2) more branching, no branching formed without C and N (Fig. 1C). This led to a denser colony at optimal conditions and a rather extended morphology under C or N limitations. &#13;
Conclusion: The findings demonstrate that the depletion of either carbon or nitrogen results in enhanced substrate penetration, predominantly through edge filaments. Notably, the optimal growth and peak biomass C:N ratio of 60 suggest both a correlation with and importance of the medium C:N ratio. Specifically, the lowest carbon input led to a reduced biomass C:N ratio, while the peak biomass C:N ratio was achieved at the medium C:N ratio of 60.</abstract>
    <enrichment key="eventName">FEMS MICRO conference</enrichment>
    <enrichment key="eventPlace">Milano, Italy</enrichment>
    <enrichment key="eventStart">14.07.2025</enrichment>
    <enrichment key="eventEnd">17.07.2025</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
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    <author>Abolfazl Dehkohneh</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Black fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Carbon-use efficiency</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Polyextremotolerant</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Oligotrophs</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rock-inhabiting fungi</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">4 Material und Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">4.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>57144</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>poster</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A random mutagenesis approach to elucidate the biology of extremotolerant black fungi</title>
    <abstract language="eng">Microcolonial black fungi ubiquitously inhabit sun-exposed natural and man-made surfaces of our planet. To promote genetic studies, which are hindered by slow growth, lack of sexual cycles and transformation difficulties, CRISPR/Cas9-based genetic tools were implemented (Erdmann et al. 2022, Front Fungal Biol). Now efficient targeted mutagenesis of the rock inhabitant Knufia petricola (Eurotiomycetes/Chaetothyriales) - as a representative of the polyphyletic group of black fungi - enables the elucidation of extremotolerance, oligotrophism, unusual types of cell division, mineral weathering and symbiotic interactions. Still more progress on assigning functions to yet unknown genes can be expected if a forward genetics approach is available. We chose the two-component Activator/ Dissociation (Ac/Ds) transposon system from maize for generating a collection of insertional mutants by in-vivo mutagenesis of K. petricola. For the optimal use of this genetic tool, an inducible promoter for the expression of the Ac transposase (AcTPase) and by this the regulatable transposition of the resistance cassette-containing Ds transposon is desired. However, endogenous promoters for nitrate assimilation and galactose catabolism - often used in fungi for regulatable gene expression - are not inducible by their substrates in K. petricola suggesting that the regulatory networks for nutrient acquisition differ significantly in oligotrophic fungi. Therefore, the metabolism-independent Tet-on system was combined with the AcTPase coding sequence and subsequently transformed into Ds-carrying K. petricola strains. In total, four auxotrophic Ac|Ds starter strains containing the Ds transposon at different position of ade2 or ura3 were generated. The cultivation of these strains with doxycycline for induction of TET::Ac and subsequent selection of cells on ADE/URA-lacking media resulted in prototrophic colonies (revertants) for some but not all Ac|Ds strains. Currently, the transposition events in the obtained revertants are studied to validate the procedure. First amplicon sequencing of excision sites revealed footprint patterns, proving the transposon jumped.</abstract>
    <enrichment key="eventName">16th European Conference on Fungal Genetics</enrichment>
    <enrichment key="eventPlace">Innsbruck, Austria</enrichment>
    <enrichment key="eventStart">05.03.2023</enrichment>
    <enrichment key="eventEnd">08.03.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Eileen Erdmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rock-inhabiting fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Foward genetics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>In-vivo mutagenesis</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">4 Material und Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">4.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>62141</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>poster</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">From microscale to macroscale: how environmental conditions impact the growth of the black fungus Knufia petricola</title>
    <abstract language="eng">Environmental, black fungi are known for their oligotrophic lifestyle and melanin production and ubiquitous colonisers of natural and anthropogenic subaerial surfaces like marble monuments, washing machine soap dispensers and solar panels. Even though their growth is generally unappreciated, prevention or inhibition thereof is still to be accomplished. We have chosen the black fungus Knufia petricola as a model species to study these organisms as it is genetically amenable, able to colonise and deteriorate minerals and produces extracellular polymeric substances allowing attachment. Our goal is simple: the quantitative description of its growth on various environmental conditions to create a mathematical model which could allow the development of a mitigation strategy. The conditions to be tested are the quantity and type of carbon and nitrogen sources, the pH and the presence of neighbouring colonies. The mathematical model is in development using the iDynoMiCS 2.0 platform.&#13;
Our first results showed that the growth rate is negatively correlated to the colony forming units (i.e. the presence of a neighbouring colony). Although interesting with respect to mitigation, we therefore have chosen to track the growth of single colonies. On a macro-scale, the highest extension rates of colonies were at pH 5, 0.01M NO3, 0.01M NH4, 0.1M glucose, and 0.1M sucrose. Interesting are the similar rates in the range of 0.01M to 0.1M for carbon, and that CO2 production on similar conditions correlates well with these results. &#13;
On a microscale, we have followed the growth of single cells using a custom-made microfluidic flow cell. Overall, first results show that medium containing more carbon not necessarily affected the growth rate but rather the quantity of branches produced by a single cell. This rapidly results in a more compact microcolony versus the more extended colonies on C-deficient media. This more profound knowledge on the growth of black fungi will allow to dissect their role in material deterioration and colonisation.</abstract>
    <enrichment key="eventName">International Biodeterioration &amp; Biodegradation Society (IBBS)</enrichment>
    <enrichment key="eventPlace">Berlin, Germany</enrichment>
    <enrichment key="eventStart">09.09.2024</enrichment>
    <enrichment key="eventEnd">12.09.2024</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
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    <author>Abolfazl Dehkohneh</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Black fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rock-inhabiting fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fungal biofilm</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Individual-based modelling</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">4 Material und Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">4.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>62270</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>poster</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">From microscale to macroscale: environmental conditions and growth patterns of the black fungus Knufia petricola</title>
    <abstract language="eng">Environmental, black fungi are known for their oligotrophic lifestyle and melanin production and ubiquitous colonisers of natural and anthropogenic subaerial surfaces like marble monuments, washing machine soap dispensers and solar panels. Even though their growth is generally unappreciated, prevention or inhibition thereof is still to be accomplished. We have chosen the black fungus Knufia petricola as a model species to study these organisms as it is genetically amenable, able to colonise and deteriorate minerals and produces extracellular polymeric substances allowing attachment. Our goal is simple: the quantitative description of its growth on various environmental conditions to create a mathematical model which could allow the development of a mitigation strategy. The conditions to be tested are the quantity and type of carbon and nitrogen sources, the pH and the presence of neighbouring colonies. The mathematical model is in development using the iDynoMiCS 2.0 platform.&#13;
Our first results showed that the growth rate is negatively correlated to the colony forming units (i.e. the presence of a neighbouring colony). Although interesting with respect to mitigation, we therefore have chosen to track the growth of single colonies. On a macro-scale, the highest extension rates of colonies were at pH 5, 0.01M NO3, 0.01M NH4, 0.1M glucose, and 0.1M sucrose. Interesting are the similar rates in the range of 0.01M to 0.1M for carbon, and that CO2 production on similar conditions correlates well with these results. &#13;
On a microscale, we have followed the growth of single cells using a custom-made microfluidic flow cell. Overall, first results show that medium containing more carbon not necessarily affected the growth rate but rather the quantity of branches produced by a single cell. This rapidly results in a more compact microcolony versus the more extended colonies on C-deficient media. This more profound knowledge on the growth of black fungi will allow to dissect their role in material deterioration and colonisation.</abstract>
    <enrichment key="eventName">CurvoBio 2024</enrichment>
    <enrichment key="eventPlace">Warsaw, Poland</enrichment>
    <enrichment key="eventStart">28.08.2024</enrichment>
    <enrichment key="eventEnd">30.08.2024</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Abolfazl Dehkohneh</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Black fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rock-inhabiting fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fungal biofilm</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Individual-based modelling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biocorrosion</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">4 Material und Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">4.0 Abteilungsleitung und andere</collection>
    <collection role="themenfelder" number="">Biokorrosion</collection>
  </doc>
  <doc>
    <id>65034</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">How Single Cells and Biofilms of the Extremotolerant Black Fungus Knufia petricola Respond to Oligotrophic Environments</title>
    <abstract language="eng">Melanised black fungi, such as Knufia petricola, are renowned for their constitutive melanin production, extremotolerance, and ability to thrive in hostile, oligotrophic natural and built environments from Antarctic outcrops to marble monuments and solar panels. These traits make them compelling models for astrobiological research, offering insights into survival strategies under conditions analogous to extraterrestrial habitats. Here, we quantified the responses of K. petricola A95 to carbon and nitrogen supply, varying sources (C: glucose vs. sucrose; N: ammonium vs. nitrate) and concentrations (C:N ratios of 0.6 – 600), including nutrient-free controls. Biofilm radial extension and thickness, morphology, biomass, produced CO2, and carbon-use efficiency (CUE) were analysed across controlled C:N ratios after 28 days. we combined macroscale assays of biofilm formation on agar with microscale tracking of single-cell development into microcolonies in a microfluidic device. This dual-scale approach allows the study of the nutritional requirements and growth strategies of K. petricola under chronic oligotrophy and provides quantitative inputs for individual-based simulations using iDynoMiCS 2.0. Macroscale analysis identified a C:N ratio of 60 as optimal, resulting in the highest biomass and colony thickness and the highest cumulative CO2 release. Depletion or low concentrations of C or N reduced biomass and increased peripheral filamentation and higher substrate penetration. Notably, nitrate as the N source produced biofilms with more peripheral filaments and caused more wrinkles on the surface of biofilm, whereas ammonium yielded compact, smooth biofilms with little to no filamentation. The CUE ranged from 0.4 to 0.6, being lowest under nutrient limitation. Microscale observations of single cells revealed that increasing the C:N ratio from 0.6 to 60 shortened cell cycles and promoted branching, no branching formed without C and N. Thus, a denser colony at optimal conditions and a rather extended morphology under C or N limitations were observed.</abstract>
    <enrichment key="eventName">Berlin Early-career Space Research (BESR) conference 2025</enrichment>
    <enrichment key="eventPlace">Berlin, Germany</enrichment>
    <enrichment key="eventStart">06.10.2025</enrichment>
    <enrichment key="eventEnd">07.10.2025</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Abolfazl Dehkohneh</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Black fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Oligotrophs</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rock-inhabiting fungi</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">4 Material und Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">4.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>65755</id>
    <completedYear/>
    <publishedYear>2026</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">From data to model, linking Knufia petricola traits to emergent biofilm properties using individual-based experiments and modelling</title>
    <abstract language="eng">Black fungi, a diverse group of ascomycetes, well known for their ability to thrive in extreme environments, are found to colonize and grow on subaerial surfaces where few other microbes survive. This includes bare rock as well as marble monuments and solar panels. Black fungi can deteriorate hard substrates which is of particular concern for the preservation of cultural heritage, while their ability to colonize solar panels can cause a reduction in green energy yield. We have been developing computational modelling tools to gain predictive insight into their growth and proliferation. In this work we focus on the black fungus Knufia petricola, a fungus that possesses many of the characteristic features of black fungi generally and for which genetic engineering tools have been developed. Detailed observations and systematic characterization of the organism are fundamental to developing a predictive model. We combined the lessons from individual-based and biofilm characterization studies of K. petricola by Dehkohneh et al. (Manuscripts in preparation) with the predictive potential of Individual-based Modelling (IbM). In these systematic characterization studies K. petricola was grown and characterized on agar and on a glass substrate. K. petricola was grown under a variety of conditions; different carbon and nitrogen sources, different degrees of nutrient limitation, and C:N ratios. We"ve thus gained insight on how these conditions affect the growth characteristics and morphological development of K. petricola, including how nutrient limitation can limit branch development and shift generation times, and how the C:N ratio affects substrate penetration. We employed this knowledge to develop a new K. petricola IbM.We used the IbM framework iDynoMiCS 2.0 (Cockx et al. 2024) to formulate our model. The model captures both morphological and kinetic aspects of K. petricola. By formulating characteristics of individual cells and the interactions with their neighbors and environment mathematically we can simulate emergent properties, such as the architecture and expansion of K. petricola micro- colonies, which gives us the unique ability to link microbial traits with biofilm characteristics. The model gives us insight on how environmental parameters can be manipulated to steer the development of K. petricola biofilms, it can thus help forecast K. petricola biofilm proliferation and can be used to inform new bio-colonization mitigation strategies.</abstract>
    <enrichment key="eventName">Annual Conference of the Association for General and Applied Microbiology (VAAM) 2026</enrichment>
    <enrichment key="eventPlace">Berlin, Germany</enrichment>
    <enrichment key="eventStart">22.03.2026</enrichment>
    <enrichment key="eventEnd">25.03.2026</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Bastiaan J.R. Cockx</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rock-inhabiting fungi</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Extreme environments</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fungal growth</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">4 Material und Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">4.0 Abteilungsleitung und andere</collection>
  </doc>
</export-example>
