Bergmeier, Erwin

[["dc.bibliographiccitation.artnumber","e02374"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Ecosphere"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Karadimou, E."],["dc.contributor.author","Kallimanis, A. S."],["dc.contributor.author","Tsiripidis, I."],["dc.contributor.author","Raus, T."],["dc.contributor.author","Bergmeier, E."],["dc.contributor.author","Dimopoulos, P."],["dc.date.accessioned","2019-07-09T11:46:04Z"],["dc.date.available","2019-07-09T11:46:04Z"],["dc.date.issued","2018"],["dc.description.abstract","Changes in species diversity following volcanic eruptions have been studied extensively, but our knowledge on functional diversity and community assembly under such conditions is very limited. Here, we study the processes following the destruction of vegetation after a volcanic eruption. Specifically, we investigate (1) the temporal patterns of taxonomic and functional diversity over time since a previous eruption (alpha diversity) and beta diversity, (2) the temporal patterns of 26 individual traits (vegetative characteristics, plant taxa ecological preferences, and regenerative characteristics) providing more detailed information on species strategies at the initial and later stages of succession, and (3) the processes driving species assembly and whether they changed over time since the eruption an eruption. We analyzed data recorded during five floristic censuses that took place between 1911 and 2011, calculated alpha and beta facets of taxonomic and functional diversity and examined how community structure changed over time, using 26 functional characteristics, based on their ability to discern primary from later colonists, including longevity, growth form, Ellenberg’s indicator values, seed production and weight, flower size and sex, pollination type, and dispersal mode. Null model analysis was used to test whether the observed functional diversity deviates from random expectations. Alpha diversity, both taxonomic and functional, increased over time after an eruption, while beta diversity did not display a clear trend. This finding indicates that mainly abiotic processes determine species assembly over time after an eruption (at least for the time span studied here), contrary to theoretical expectations. It is most interesting that, simultaneously, some aspects of diversity indicated the effect of biotic interactions (facilitation and competition) on the assembly of species a few years after an eruption. This finding implies a legacy effect, since a high percentage of perennial species was noticed in the assemblage right after the eruption, as well as the effect of the harsh environmental conditions on the assembly of the plant communities. In conclusion, our results indicate the role of legacy effects in succession (most probably through the survival of underground plant parts) and underline the importance of disturbance history in providing the context needed for understanding effects of past events on succession."],["dc.identifier.doi","10.1002/ecs2.2374"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15389"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59373"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","2150-8925"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","570"],["dc.title","Functional diversity changes over 100 yr of primary succession on a volcanic island: insights into assembly processes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.journal","Nature Conservation"],["dc.bibliographiccitation.lastpage","23"],["dc.bibliographiccitation.volume","35"],["dc.contributor.author","Demant, Laura"],["dc.contributor.author","Meyer, Peter"],["dc.contributor.author","Sennhenn-Reulen, Holger"],["dc.contributor.author","Walentowski, Helge"],["dc.contributor.author","Bergmeier, Erwin"],["dc.date.accessioned","2019-07-09T11:51:20Z"],["dc.date.available","2019-07-09T11:51:20Z"],["dc.date.issued","2019"],["dc.description.abstract","Setting operational conservation objectives is a major challenge for effective biodiversity conservation worldwide. To analyse forest conservation objectives in Germany in a transparent manner and to achieve a consistent and consensual framework, we systematically classified conservation objectives suggested in concepts by different stakeholders. We analysed 79 biodiversity and forest conservation concepts of different stakeholder groups at various scales and applied textual content analysis and Dirichlet regression to reach a high degree of transferability and applicability. Our analysis revealed a broad consensus concerning forest conservation across stakeholders and scales, albeit with slight differences in focus, but we detected a scale-related mismatch. A wide array of conservation objectives covered social, biotic and abiotic natural resources. Conservation of species, ecosystems and structural elements in forests were found to be of primary importance across stakeholders and scale levels. Shortcomings in the conservation concepts were found in addressing genetic diversity, abiotic resources and socio-cultural objectives. Our results show that problems in forest conservation may be rooted in trade-offs between aims, targeting mismatch across scale levels and insufficient implementation of objectives."],["dc.identifier.doi","10.3897/natureconservation.35.35049"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16109"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59931"],["dc.language.iso","en"],["dc.subject.ddc","570"],["dc.title","Seeking consensus in German forest conservation: An analysis of contemporary concepts"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]