119 Works

Focus on: Bioenergie im Strom- und Wärmemarkt

Daniela Thrän & Diana Pfeiffer

CO2-Zertifikate für die Festlegung atmosphärischen Kohlenstoffs in Böden: Methoden, Maßnahmen und Grenzen

Martin Wiesmeier, Stefanie Mayer, Carsten Paul, Katharina Helming, Axel Don, Uwe Franko, Markus Franko & Ingrid Kögel-Knabner
Agrarböden besitzen durch den Aufbau von organsicher Bodensubstanz (Humus), die zu etwa 58% aus Kohlenstoff (Corg) besteht, ein großes Potential zur Kohlenstoffbindung. Positive Anstrengungen im Humusmanagement könnten daher einen wesentlichen Beitrag für den Klimaschutz leisten. Für Landwirtinnen und Landwirte stellen so genannte CO2-Zertifikate für den Aufbau von Corg („Humuszertifikate“) einen zusätzlichen Anreiz dar, humusfördernde Bewirtschaftungsmaßnahmen umzusetzen. Diese CO2-Zertifikate werden von privatwirtschaftlichen Initiativen und Unternehmen im Bereich des freiwilligen CO2-Markts vergeben. Insbesondere im Bereich der Landwirtschaft...

Pilzarten und ihre pflanzlichen Wirte im Klimawandel

Mika Tarkka & Jakob Hildebrandt
Viele parasitäre Baumpilze können von der Schwächung von Bäumen durch Trockenstress profitieren. Pilzsammler, die neben Mykorrhizapilzen auch parasitäre Baumpilze sammeln, mögen sich daran erfreuen. Doch ist dabei nicht zu verkennen, dass pflanzenpathogene Pilze derzeit einen starken Anpassungsdruck in Forst- und Landwirtschaft ausüben.

Data from: Multi-trophic guilds respond differently to changing elevation in a subtropical forest

Julia Binkenstein, Alexandra-Maria Klein, Thorsten Assmann, Francois Buscot, Alexandra Erfmeier, Keping Ma, Katherina A. Pietsch, Karsten Schmidt, Thomas Scholten, Tesfaye Wubet, Helge Bruelheide, Andreas Schuldt & Michael Staab
Negative relationships between species richness and elevation are common and attributed to changes in single environmental properties associated to elevation, such as temperature and habitat area. However, research has lacked taxonomic breadth and comprehensive elevation studies that consider multiple groups from different trophic levels are rare. We thus analysed 24 groups of plants, arthropods, and microorganisms grouped into six trophic guilds (predators, detritivores, herbivores, plants, bacteria and fungi) along a relatively short elevational gradient (~600...

Data from: A model-derived short-term estimation method of effective size for small populations with overlapping generations

Annegret Grimm, Bernd Gruber, Marion Hoehn, Katrin Enders & Klaus Henle
If not actively managed, small and isolated populations lose their genetic variability and the inbreeding rate increases. Combined, these factors limit the ability of populations to adapt to environmental changes, increasing their risk of extinction. The effective population size (Ne) is proportional to the loss of genetic diversity and therefore of considerable conservation relevance. However, estimators of Ne that account for demographic parameters in species with overlapping generations require sampling of populations across generations, which...

Data from: Interspecific competition alters leaf stoichiometry in 20 grassland species

Jordan Guiz, Anne Ebeling, Nico Eisenhauer, Nina Hacker, Lionel Hertzog, Yvonne Oelmann, Christiane Roscher, Cameron Wagg & Helmut Hillebrand
The extensive use of traits in ecological studies over the last few decades to predict community functions has revealed that plant traits are plastic and respond to various environmental factors. These plant traits are assumed to predict how plants compete and capture resources. Variation in stoichiometric ratios both within and across species reflects resource capture dynamics under competition. However, the impact of local plant diversity on species-specific stoichiometry remains poorly studied. Here, we analyze how...

Data from: Predicting forest management effects on oak–rodent mutualisms

Teresa Morán-López, Thorsten Wiegand, Juan Manuel Morales, Fernando Valladares & Mario Díaz
Wood mice Apodemus sylvaticus are the main dispersers of acorns in highly managed Mediterranean holm-oak woodlands. Mice mobilize and cache acorns to store them for winter consumption. They carry acorns away from potential competitors, face predation risks during mobilization, and cache acorns in areas where pilfering risks are low. However, mice can act either as net predators or as moderately efficient dispersers, depending on the way landscape management affects intraspecific competition for acorns and shelter...

Data from: Life in leaf litter: novel insights into community dynamics of bacteria and fungi during litter decomposition

Witoon Purahong, Tesfaye Wubet, Guillaume Lentendu, Michael Schloter, Marek J. Pecyna, Danuta Kapturska, Martin Hofrichter, Dirk Krüger & François Buscot
Microorganisms play a crucial role in the biological decomposition of plant litter in terrestrial ecosystems. Due to the permanently changing litter quality during decomposition, studies of both fungi and bacteria at a fine taxonomic resolution are required during the whole process. Here we investigated microbial community succession in decomposing leaf litter of temperate beech forest using pyrotag sequencing of the bacterial 16S and the fungal internal transcribed spacer (ITS) rRNA genes. Our results reveal that...

Data from: Plant species richness negatively affects root decomposition in grasslands

Hongmei Chen, Liesje Mommer, Jasper Van Ruijven, Hans De Kroon, Christine Fischer, Arthur Gessler, Anke Hildebrandt, Michael Scherer-Lorenzen, Christian Wirth & Alexandra Weigelt
Plant diversity enhances many ecosystem functions, including root biomass production, which drives soil carbon input. Although root decomposition accounts for a large proportion of carbon input for soil, little is known about plant diversity effect on this process. Plant diversity may affect root decomposition in two non-exclusive ways: by providing roots of different substrate quality (e.g. root chemistry) and/or by altering the soil environment (e.g. microclimate). To disentangle these two pathways, we conducted three decomposition...

Data from: Patterns of size variation in bees at a continental scale: does Bergmann’s rule apply?

Maxence Gérard, Maryse Vanderplanck, Markus Franzen, Michael Kuhlmann, Simon G. Potts, Pierre Rasmont, Oliver Schweiger & Denis Michez
Body size latitudinal clines have been widley explained by the Bergmann’s rule in homeothermic vertebrates. However, there is no general consensus in poikilotherms organisms in particular in insects that represent the large majority of wildlife. Among them, bees are a highly diverse pollinators group with high economic and ecological value. Nevertheless, no comprehensive studies of species assemblages at a phylogenetically larger scale have been carried out even if they could identify the traits and the...

Trait data of European and Maghreb butterflies

Joseph Middleton Welling, Leonardo Dapporto Dapporto, Enrique García-Barros, Martin Wiemers, Piotr Nowicki, Elisa Plazio, Simona Bonelli, Michele Zaccagno, Martina Šašić, Jana Lipárová, Oliver Schweiger, Alexander Harpke, Martin Musche, Josef Settele, Reto Schmucki & Tim Shreeve
Trait-based analyses explaining the different responses of species and communities to environmental changes are increasing in frequency. European butterflies are an indicator group that responds rapidly to environmental changes with extensive citizen science contributions to documenting changes of abundance and distribution. Species traits have been used to explain long- and short-term responses to climate, land-use and vegetation changes. Studies are often characterised by limited traits sets being used, with risks that the relative roles of...

Detection dogs in nature conservation: a database on their worldwide deployment with a review on breeds used and their performance compared to other methods

Annegret Grimm-Seyfarth, Wiebke Harms & Anne Berger
Over the last century, dogs have been increasingly used to detect rare and elusive species or traces of them. The use of wildlife detection dogs (WDD) is particularly well established in North America, Europe and Oceania, and projects deploying them have increased worldwide. However, if they are to make a significant contribution to conservation and management, their strengths, abilities, and limitations should be fully identified. We reviewed the use of WDD with particular focus on...

Biodiversity facets, canopy structure and surface temperature of grassland communities

Claudia Regina Guimaraes-Steinicke, Alexandra Weigelt, Raphaël Prouxl, Thomas Lanners, Nico Eisenhauer, Joaquín Duque-Lazo, Björn Reu, Christiane Roscher, Cameron Wagg, Nina Buchmann & Christian Wirth
Canopy structure is an important driver of the energy budget of the grassland ecosystem and is, at the same time, altered by plant diversity. Diverse plant communities typically have taller and more densely packed canopies than less diverse communities. With this, they absorb more radiation, have a higher transpiring leaf surface, and are better coupled to the atmosphere which leads to cooler canopy surfaces. However, whether plant diversity generally translates into a cooling potential remains...

Data from: Intraspecific trait variation increases species diversity in a trait-based grassland model

Michael Crawford, Florian Jeltsch, Felix May, Volker Grimm & Ulrike E. Schlägel
Intraspecific trait variation (ITV) is thought to play a significant role in community assembly, but the magnitude and direction of its influence are not well understood. Although it may be critical to better explain population persistence, species interactions, and therefore biodiversity patterns, manipulating ITV in experiments is challenging. We therefore incorporated ITV into a trait- and individual-based model of grassland community assembly by adding variation to the plants’ functional traits, which then drive life-history trade-offs....

Data from: Trait variation in response to varying winter temperatures, diversity patterns and signatures of selection along the latitudinal distribution of the widespread grassland plant Arrhenatherum elatius

Stefan G. Michalski, Andrey V. Malyshev & Juergen Kreyling
Across Europe, genetic diversity can be expected to decline toward the North because of stochastic and selective effects which may imply diminished phenotypic variation and less potential for future genetic adaptations to environmental change. Understanding such latitudinal patterns can aid provenance selection for breeding or assisted migration approaches. In an experiment simulating different winter temperatures, we assessed quantitative trait variation, genetic diversity, and differentiation for natural populations of the grass Arrhenatherum elatius originating from a...

Checkliste zur Unterstützung der Helmholtz-Zentren bei der Implementierung von Richtlinien für nachhaltige Forschungssoftware

Reinhard Messerschmidt, Heinz Pampel, Felix Bach, Wolfgang zu Castell, Michael Denker, Ants Finke, Bernadette Fritzsch, Martin Hammitzsch, Uwe Konrad, Yvonne Leifels, Christoph Möhl, Marco Nolden, Markus Scheinert, Tobias Schlauch, Thomas Schnicke & Dirk Steglich
Mit der voranschreitenden Digitalisierung von Forschung und Lehre steigt die Zahl an Software-Lösungen, die an wissenschaftlichen Einrichtungen entstehen und zur Erkenntnisgewinnung genutzt werden. Die – unter dem Stichwort Open Science geforderte – Zugänglichkeit und Nachnutzung von wissenschaftlichen Ergebnissen kann in vielen Fachgebieten nur sichergestellt werden, wenn neben Forschungsdaten auch Programmcode offen zugänglich gemacht wird. Die vorliegende Handreichung richtet sich an Entscheider*innen in den Helmholtz-Zentren, die sich mit der Implementierung von Richtlinien für nachhaltige Forschungssoftware befassen....

Reader: 10. Statuskonferenz

Daniela Thrän & Vera Tens

Data from: Landscape heterogeneity filters functional traits of rice arthropods in tropical agroecosystems

Christophe Dominik, Ralf Seppelt, Finbarr G. Horgan, Josef Settele & Tomáš Václavík
Biological control services of agroecosystems depend on the functional diversity of species traits. However, the relationship between arthropod traits and landscape heterogeneity is still poorly understood, especially in tropical rice agroecosystems which harbour a high diversity of often specialized species. We investigated how landscape heterogeneity, measured by three metrics of landscape composition and configuration, influenced body size, functional group composition, dispersal ability and vertical distribution of rice-arthropods in the Philippines. We found that landscape composition...

Principles for the Responsible Handling of Research Data at the Helmholtz Centre for Environmental Research - UFZ

Jan Bumberger & Thomas Schnicke
The basic institutional policy on research data management at the Helmholtz Centre for Environmental Research - UFZ in the first version of 2018.

SPP2089_P20_Publication-Data_Bandara_etal_2021_Front.Plant.Sci_LRWhite_Embedding_Method

Chiththaka Chaturanga Devapriya Bandara Imihami Mudiyanselage & Matthias Schmidt
Data acquired in the framework of the SPP 2089, funded by the DFG. This data folder associated with the publication "Microbial Identification, High-Resolution Microscopy and Spectrometry of the Rhizosphere in its Native Spatial Context" by Bandara et al. (2021), Frontiers in Plant Science Journal. DOI: 10.3389/fpls.2021.668929 The compressed folder contains ten subfolders corresponding to each technique as described below. Each folder named as Origin contains the original data, while processed data is included in the...

Mimetic host shifts in a social parasite of ants: Behavioural study

K. Schönrogge, J.A. Thomas, G.W. Elmes, M. Sielezniew, A. Stankiewicz-Fiedurek, D. Simcox & J. Settele
This dataset derives from cross-over experiments using ant worker rescue behaviour towards caterpillars of the socially parasitic butterfly from two host-ecotypes. The data comprise datasets collected from four 4 experiments 3 hours after testing and from 4 experiments 7 days later. They all include nest numbers, the order of retrieval ranked by the attention of nurse ants to the ant pupae, large larvae and small larvae and the adult Maculinea rebeli. The data give the...

Effects of different types of low-intensity management on plant-pollinator interactions in Estonian grasslands

Elena Motivans Švara
In the face of global pollinator decline, extensively-managed grasslands play an important role in supporting stable pollinator communities. However, different types of extensive management may promote particular plant species and thus particular functional traits. As the functional traits of flowering plant species (e.g. flower size and shape) in a habitat determine the identity and frequency of pollinator visitors, they can also influence the structures of plant-pollinator interaction networks. The aim of this study was to...

INCREASING CORAL RESILIENCE TO BLEACHING THROUGH MICROBIOME MANIPULATION

Raquel Peixoto, Phillipe Rosado, Deborah Leite, Gustavo Duarte, Ricardo Chaloub, Guillaume Jospin, Jonathan Eisen, David Bourne, Ulisses Da Rocha, João Saraiva & Francisco Dini-Andreote
Although the early coral reef-bleaching warning system (NOAA/USA) is established, there is no feasible treatment that can minimize temperature bleaching and/or disease impacts on corals in the field. Here, we present the first attempts to extrapolate the widespread and well-established use of bacterial consortia to protect or improve health in other organisms (e.g., humans and plants) to corals. Manipulation of the coral-associated microbiome was facilitated through addition of a consortium of native (isolated from Pocillopora...

Data from: Increasing plant diversity of experimental grasslands alters the age and growth of Plantago lanceolata from younger and faster to older and slower

Anna Roeder, Fritz H. Schweingruber, Markus Fischer & Christiane Roscher
The persistence of plant populations depends on the ability of individuals to cope with the conditions provided by the community. So far, it is not known whether differences in the diversity and composition of plant communities affect the age structure of plant populations or the expression of stem anatomical traits reflecting investment into plant growth and storage. We analyzed annual growth rings in the secondary xylem and measured stem anatomical traits in individuals from 18...

Data from: Transient recovery dynamics of a predator–prey system under press and pulse disturbances

Canan Karakoç, Alexander Singer, Karin Johst, Hauke Harms & Antonis Chatzinotas
Background: Species recovery after disturbances depends on the strength and duration of disturbance, on the species traits and on the biotic interactions with other species. In order to understand these complex relationships, it is essential to understand mechanistically the transient dynamics of interacting species during and after disturbances. We combined microcosm experiments with simulation modelling and studied the transient recovery dynamics of a simple microbial food web under pulse and press disturbances and under different...

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