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  1. Article ; Online: Ecology needs to overcome siloed modelling.

    Grimm, Volker

    Trends in ecology & evolution

    2023  Volume 38, Issue 12, Page(s) 1122–1124

    Abstract: Bahlburg et al. re-implemented eight growth models of Antarctic krill and showed that their predictions are all over the place. The authors discuss the reasons for this and how more coherence in modelling could be achieved through systematic model ... ...

    Abstract Bahlburg et al. re-implemented eight growth models of Antarctic krill and showed that their predictions are all over the place. The authors discuss the reasons for this and how more coherence in modelling could be achieved through systematic model comparison and integration. For this, we need a common language.
    MeSH term(s) Animals ; Ecology ; Euphausiacea ; Antarctic Regions
    Language English
    Publishing date 2023-09-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 284965-3
    ISSN 1872-8383 ; 0169-5347
    ISSN (online) 1872-8383
    ISSN 0169-5347
    DOI 10.1016/j.tree.2023.09.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Zs Bio TEE: Show issues
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  2. Article: Modeling the emergence of migratory corridors and foraging hot spots of the green sea turtle

    Dalleau, Mayeul / Kramer-Schadt, Stephanie / Grimm, Volker

    Ecology and evolution, 9(18):10317-10342

    2019  

    Abstract: Environmental factors shape the spatial distribution and dynamics of populations. Understanding how these factors interact with movement behavior is critical for efficient conservation, in particular for migratory species. Adult female green sea turtles, ...

    Institution Leibniz-Institut für Zoo- und Wildtierforschung (Berlin)
    Abstract Environmental factors shape the spatial distribution and dynamics of populations. Understanding how these factors interact with movement behavior is critical for efficient conservation, in particular for migratory species. Adult female green sea turtles, Chelonia mydas, migrate between foraging and nesting sites that are generally separated by thousands of kilometers. As an emblematic endangered species, green turtles have been intensively studied, with a focus on nesting, migration, and foraging. Nevertheless, few attempts integrated these behaviors and their trade‐offs by considering the spatial configurations of foraging and nesting grounds as well as environmental heterogeneity like oceanic currents and food distribution. We developed an individual‐based model to investigate the impact of local environmental conditions on emerging migratory corridors and reproductive output and to thereby identify conservation priority sites. The model integrates movement, nesting, and foraging behavior. Despite being largely conceptual, the model captured realistic movement patterns which confirm field studies. The spatial distribution of migratory corridors and foraging hot spots was mostly constrained by features of the regional landscape, such as nesting site locations, distribution of feeding patches, and oceanic currents. These constraints also explained the mixing patterns in regional forager communities. By implementing alternative decision strategies of the turtles, we found that foraging site fidelity and nesting investment, two characteristics of green turtles' biology, are favorable strategies under unpredictable environmental conditions affecting their habitats. Based on our results, we propose specific guidelines for the regional conservation of green turtles as well as future research suggestions advancing spatial ecology of sea turtles. Being implemented in an easy to learn open‐source software, our model can coevolve with the collection and analysis of new data on energy budget and movement into a generic tool for sea turtle research and conservation. Our modeling approach could also be useful for supporting the conservation of other migratory marine animals.
    Keywords connectivity ; corridors ; individual‐based model ; movement ; migration ; sea turtle
    Language English
    Document type Article
    Database Repository for Life Sciences

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  3. Conference proceedings: Evaluation von Hörgeräten mittels interaktiver Kommunikation in audio-visueller virtueller Realität und Telepräsenz

    Grimm, Giso / Kothe, Angelika / Hohmann, Volker

    2024  , Page(s) 4

    Event/congress 26. Jahrestagung der Deutschen Gesellschaft für Audiologie; Aalen; Deutsche Gesellschaft für Audiologie e.V.; 2024
    Keywords Medizin, Gesundheit
    Publishing date 2024-03-05
    Publisher German Medical Science GMS Publishing House; Düsseldorf
    Document type Conference proceedings
    DOI 10.3205/24dga004
    Database German Medical Science

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  4. Article: Editorial: thematic series "Integrating movement ecology with biodiversity research".

    Jeltsch, Florian / Grimm, Volker

    Movement ecology

    2020  Volume 8, Page(s) 19

    Language English
    Publishing date 2020-05-25
    Publishing country England
    Document type Editorial
    ZDB-ID 2724975-X
    ISSN 2051-3933
    ISSN 2051-3933
    DOI 10.1186/s40462-020-00210-0
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  5. Book ; Thesis: Mikrosatelliteninstabilität und Mutationsanalyse in Exonbereichen der "Mismatch-repair Gene" hMLH1 und hMSH2 im familiär gehäuft vorkommenden Magenkarzinom

    Grimm, Volker

    1998  

    Author's details Volker Grimm
    Language German
    Size 103 S., Ill., graph. Darst., 21 cm
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis München, Techn. Univ., Diss., 1998
    HBZ-ID HT013163950
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    2001 D 2376 order for loan Magazin

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  6. Book ; Online ; Thesis: Advancing individual-based models of Antarctic krill (Euphausia superba, Dana 1850)

    Bahlburg, Dominik [Verfasser] / Berger, Uta [Gutachter] / Grimm, Volker [Gutachter] / Jørgensen, Christian [Gutachter]

    2024  

    Author's details Dominik Bahlburg ; Gutachter: Uta Berger, Volker Grimm, Christian Jørgensen
    Keywords Biowissenschaften, Biologie ; Life Science, Biology
    Subject code sg570
    Language English
    Publisher Technische Universität Dresden
    Publishing place Dresden
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  7. Conference proceedings: Distributed interactive low-delay virtual reality for music and research applications

    Grimm, Giso / Kothe, Angelika / Hohmann, Volker

    2023  , Page(s) 15

    Event/congress 25. Jahrestagung der Deutschen Gesellschaft für Audiologie; Köln; Deutsche Gesellschaft für Audiologie e.V.; 2023
    Keywords Medizin, Gesundheit
    Publishing date 2023-03-01
    Publisher German Medical Science GMS Publishing House; Düsseldorf
    Document type Conference proceedings
    DOI 10.3205/23dga015
    Database German Medical Science

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  8. Conference proceedings: Influence of natural head movements on communication behaviour in virtual multi-talker conversations

    Kothe, Angelika / Hohmann, Volker / Grimm, Giso

    2023  , Page(s) 14

    Event/congress 25. Jahrestagung der Deutschen Gesellschaft für Audiologie; Köln; Deutsche Gesellschaft für Audiologie e.V.; 2023
    Keywords Medizin, Gesundheit
    Publishing date 2023-03-01
    Publisher German Medical Science GMS Publishing House; Düsseldorf
    Document type Conference proceedings
    DOI 10.3205/23dga014
    Database German Medical Science

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  9. Article: It's about time: Feeding competition costs of sociality are affected more by temporal characteristics than spatial distribution.

    Ekanayake-Weber, Marcy / Mathew, Namita / Cunha, Deanna / Payen, Nathanael / Grimm, Volker / Koenig, Andreas

    Ecology and evolution

    2024  Volume 14, Issue 4, Page(s) e11209

    Abstract: For most herbivorous animals, group-living appears to incur a high cost by intensifying feeding competition. These costs raise the question of how gregariousness (i.e., the tendency to aggregate) could have evolved to such an extent in taxa such as ... ...

    Abstract For most herbivorous animals, group-living appears to incur a high cost by intensifying feeding competition. These costs raise the question of how gregariousness (i.e., the tendency to aggregate) could have evolved to such an extent in taxa such as anthropoid primates and ungulates. When attempting to test the potential benefits and costs, previous foraging models demonstrated that group-living might be beneficial by lowering variance in intake, but that it reduces overall foraging success. However, these models did not fully account for the fact that gregariousness has multiple experiences and can vary in relation to ecological variables and foraging competition. Here, we present an agent-based model for testing how ecological variables impact the costs and benefits of gregariousness. In our simulations, primate-like agents forage on a variable resource landscape while maintaining spatial cohesion with conspecifics to varying degrees. The agents' energy intake rate, daily distance traveled, and variance in energy intake were recorded. Using Morris Elementary Effects sensitivity analysis, we tested the sensitivity of 10 model parameters, of which 2 controlled gregarious behavior and 8 controlled food resources, including multiple aspects of temporal and spatial heterogeneity. We found that, while gregariousness generally increased feeding competition, the costs of gregariousness were much lower when resources were less variable over time (i.e., when calorie extraction was slow and resource renewal was frequent). We also found that maintaining proximity to other agents resulted in lower variance in energy intake when resources were more variable over time. Thus, it appears that the costs and benefits of gregariousness are strongly influenced by the temporal characteristics of food resources, giving insight into the pressures that shaped the evolution of sociality and group living, including in our own lineage.
    Language English
    Publishing date 2024-04-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2635675-2
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.11209
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  10. Article: Large-scale PVA modeling of insects in cultivated grasslands: The role of dispersal in mitigating the effects of management schedules under climate change.

    Leins, Johannes A / Grimm, Volker / Drechsler, Martin

    Ecology and evolution

    2022  Volume 12, Issue 7, Page(s) e9063

    Abstract: In many species, dispersal is decisive for survival in a changing climate. Simulation models for population dynamics under climate change thus need to account for this factor. Moreover, large numbers of species inhabiting agricultural landscapes are ... ...

    Abstract In many species, dispersal is decisive for survival in a changing climate. Simulation models for population dynamics under climate change thus need to account for this factor. Moreover, large numbers of species inhabiting agricultural landscapes are subject to disturbances induced by human land use. We included dispersal in the HiLEG model that we previously developed to study the interaction between climate change and agricultural land use in single populations. Here, the model was parameterized for the large marsh grasshopper (LMG) in cultivated grasslands of North Germany to analyze (1) the species development and dispersal success depending on the severity of climate change in subregions, (2) the additional effect of grassland cover on dispersal success, and (3) the role of dispersal in compensating for detrimental grassland mowing. Our model simulated population dynamics in 60-year periods (2020-2079) on a fine temporal (daily) and high spatial (250 × 250 m
    Language English
    Publishing date 2022-07-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 2635675-2
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.9063
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