ORCID Profile
0000-0003-3072-0095
Current Organisation
Leibniz Institute for Zoo and Wildlife Research
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Publications
Adaptive responses of animals to climate change are most likely insufficient
Publisher: Springer Science and Business Media LLC
Date: 23-07-2019
DOI: 10.1038/S41467-019-10924-4
Abstract: Biological responses to climate change have been widely documented across taxa and regions, but it remains unclear whether species are maintaining a good match between phenotype and environment, i.e. whether observed trait changes are adaptive. Here we reviewed 10,090 abstracts and extracted data from 71 studies reported in 58 relevant publications, to assess quantitatively whether phenotypic trait changes associated with climate change are adaptive in animals. A meta-analysis focussing on birds, the taxon best represented in our dataset, suggests that global warming has not systematically affected morphological traits, but has advanced phenological traits. We demonstrate that these advances are adaptive for some species, but imperfect as evidenced by the observed consistent selection for earlier timing. Application of a theoretical model indicates that the evolutionary load imposed by incomplete adaptive responses to ongoing climate change may already be threatening the persistence of species.
A Protocol for Better Design, Application, and Communication of Population Viability Analyses
Publisher: Wiley
Date: 21-05-2013
DOI: 10.1111/COBI.12076
Abstract: Population viability analyses (PVAs) contribute to conservation theory, policy, and management. Most PVAs focus on single species within a given landscape and address a specific problem. This specificity often is reflected in the organization of published PVA descriptions. Many lack structure, making them difficult to understand, assess, repeat, or use for drawing generalizations across PVA studies. In an assessment comparing published PVAs and existing guidelines, we found that model selection was rarely justified important parameters remained neglected or their implementation was described vaguely limited details were given on parameter ranges, sensitivity analysis, and scenarios and results were often reported too inconsistently to enable repeatability and comparability. Although many guidelines exist on how to design and implement reliable PVAs and standards exist for documenting and communicating ecological models in general, there is a lack of organized guidelines for designing, applying, and communicating PVAs that account for their ersity of structures and contents. To fill this gap, we integrated published guidelines and recommendations for PVA design and application, protocols for documenting ecological models in general and in idual-based models in particular, and our collective experience in developing, applying, and reviewing PVAs. We devised a comprehensive protocol for the design, application, and communication of PVAs (DAC-PVA), which has 3 primary elements. The first defines what a useful PVA is the second element provides a workflow for the design and application of a useful PVA and highlights important aspects that need to be considered during these processes and the third element focuses on communication of PVAs to ensure clarity, comprehensiveness, repeatability, and comparability. Thereby, DAC-PVA should strengthen the credibility and relevance of PVAs for policy and management, and improve the capacity to generalize PVA findings across studies.
Functional diversity of Himalayan bat communities declines at high elevation without the loss of phylogenetic diversity
Publisher: Springer Science and Business Media LLC
Date: 19-11-2021
DOI: 10.1038/S41598-021-01939-3
Abstract: Species richness exhibits well-known patterns across elevational gradients in various taxa, but represents only one aspect of quantifying bio ersity patterns. Functional and phylogenetic ersity have received much less attention, particularly for vertebrate taxa. There is still a limited understanding of how functional, phylogenetic and taxonomic ersity change in concert across large gradients of elevation. Here, we focused on the Himalaya—representing the largest elevational gradients in the world—to investigate the patterns of taxonomic, functional and phylogenetic ersity in a bat assemblage. Combining field data on species occurrence, relative abundance, and functional traits with measures of phylogenetic ersity, we found that bat species richness and functional ersity declined at high elevation but phylogenetic ersity remained unchanged. At the lowest elevation, we observed low functional dispersion despite high species and functional richness, suggesting a niche packing mechanism. The decline in functional richness, dispersion, and ergence at the highest elevation is consistent with patterns observed due to environmental filtering. These patterns are driven by the absence of rhinolophid bats, four congeners with extreme trait values. Our data, some of the first on mammals from the Himalayan region, suggest that in bat assemblages with relatively high species ersity, phylogenetic ersity may not be a substitute to measure functional ersity.
Resilience trinity: safeguarding ecosystem services across three different time horizons and decision contexts
Publisher: Cold Spring Harbor Laboratory
Date: 14-02-2019
DOI: 10.1101/549873
Abstract: Ensuring ecosystem resilience is an intuitive approach to safeguard future provisioning of ecosystem services (ES). However, resilience is an ambiguous concept and difficult to operationalize. Focusing on resilience mechanisms, such as ersity, network architectures or adaptive capacity, has recently been suggested as means to operationalize resilience. Still, the focus on mechanisms is not specific enough because the usefulness of a mechanism is context-dependent. We suggest a conceptual framework, resilience trinity, to facilitate management of resilience mechanisms in three distinctive decision contexts and time-horizons. i) reactive, when there is an imminent threat to ES resilience and a high pressure to act, ii) adjustive, when the threat is known in general but there is still time to adapt management, and iii) provident when time horizons are very long and the nature of the threats is uncertain, leading to a low willingness to act. This emphasizes that resilience has different interpretations and implications at different time horizons which however need to be reconciled. The inclusion of time into resilience thinking ensures that longer-term management actions are not missed while urgent threats to ES are given priority.
Resilience trinity: safeguarding ecosystem functioning and services across three different time horizons and decision contexts
Publisher: Wiley
Date: 31-01-2020
DOI: 10.1111/OIK.07213
Flexibility in thermal physiology and behaviour allows body mass maintenance in hibernating hazel dormice
Publisher: Wiley
Date: 25-01-2021
DOI: 10.1111/JZO.12862
Related Organisations
German Center For Integrative Biodiversity Research
Location: Germany
Related Funding Activities
No related grants have been discovered for Viktoriia Radchuk.