Marc Ulrich results 51
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Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic accuracy of the records, as well as the metadata. Moreover, we now provide an R packag...
Using archaeological data and sediment parameters to review the formation of the Gravettian layers at Krems‐WachtbergNARA Subscribed
The Gravettian site Krems‐Wachtberg in northeast Austria produced a wealth of archaeological and sedimentary data. Precondition for a detailed study of the formation processes is co‐occurrence of find layers with in situ and redeposited material. We use archaeological data and sediment parameters to review and refine a formation model that was based solely on field observations. The archaeological perspective relies upon the r...
Extreme droughts are expected to increase in frequency and severity in many regions of the world, threatening multiple ecosystem services provided by forests. Effective strategies to adapt forests to such droughts require comprehensive information on the effects and importance of the factors influencing forest resistance and resilience. We used a unique combination of inventory and dendrochronological data from a long‐term (>3...
The impact of climate warming on species diversity across scales: Lessons from experimental meta‐ecosystemsNARA Subscribed
Aim The aim was to evaluate the effects of climate warming on biodiversity across spatial scales (i.e., α‐, β‐ and γ‐diversity) and the effects of patch openness and experimental context on diversity responses. Location Global. Time period 1995–2017. Major taxa studied Fungi, invertebrates, phytoplankton, plants, seaweed, soil microbes and zooplankton. Methods We compiled data from warming experiments and conducted a meta‐anal...
Assessing the biological reactivity of organic compounds on volcanic ash: implications for human health hazardNARA Subscribed
Exposure to volcanic ash is a long-standing health concern for people living near active volcanoes and in distal urban areas. During transport and deposition, ash is subjected to various physicochemical processes that may change its surface composition and, consequently, bioreactivity. One such process is the interaction with anthropogenic pollutants; however, the potential for adsorbed, deleterious organic compounds to direct...
Ecosystem transpiration and evaporation: Insights from three water flux partitioning methods across FLUXNET sitesNARA Subscribed
We apply and compare three widely applicable methods for estimating ecosystem transpiration ( T ) from eddy covariance (EC) data across 251 FLUXNET sites globally. All three methods are based on the coupled water and carbon relationship, but they differ in assumptions and parameterizations. Intercomparison of the three daily T estimates shows high correlation among methods ( R between .89 and .94), but a spread in magnitudes o...
TRY plant trait database – enhanced coverage and open accessNARA Subscribed
Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodivers...
The ‘Roxolany Tephra’ (Ukraine) − new evidence for an origin from Ciomadul volcano, East CarpathiansNARA Subscribed
We present major element glass data and correlations for the ‘Roxolany Tephra’ − a so far geochemically unconstrained volcanic ash layer previously described in last glacial (Marine Isotope Stage 2) loess deposits of the Roxolany loess–palaeosol complex in south‐west Ukraine. This exceptionally well‐preserved, 2–3‐cm‐thick tephra layer is characterized by a rhyolitic glass composition that is comparable to that of proximal tep...
EPMA-World Congress 2015NARA Subscribed