Data from: Pine afforestation decreases the long-term performance of understory shrubs in a semiarid Mediterranean ecosystem: a stable isotope approach.Cristina Moreno-Gutiérrez, Giovanna Battipaglia, Paolo Cherubini, Antonio Delgado Huertas & José Ignacio Querejeta
1. Plant–plant interactions shape the structure and composition of plant communities, but shifts in interaction outcomes might occur in the face of ongoing climate change. 2. We assessed the influence of Pinus halepensis plantations on the long-term ecophysiological performance of understorey vegetation, by conducting a retrospective comparison (1989–2007) of growth-ring widths, δ13C and δ18O between Rhamnus lycioides shrubs from two contrasting vegetation types: P. halepensis plantations vs. open woodlands. We also measured the leaf δ13C,...
In landscape genetics, isolation-by-distance (IBD) is regarded as a baseline pattern that is obtained without additional effects of landscape elements on gene flow. However, the configuration of suitable habitat patches determines deme topology, which in turn should affect rates of gene flow. IBD patterns can be characterized either by monotonically increasing pairwise genetic differentiation (for example, FST) with increasing interdeme geographic distance (case-I pattern) or by monotonically increasing pairwise genetic differentiation up to a certain...
Data from: Genomics of the divergence continuum in an African plant biodiversity hotspot, I: drivers of population divergence in Restio capensis (Restionaceae)Christian Lexer, Rafael O. Wüest, Sofia Mangili, Myriam Heuertz, Kai N. Stolting, Peter B. Pearman, Felix Forest, Nicolas Salamin, Niklaus E. Zimmermann & Eligio Bossolini
Understanding the drivers of population divergence, speciation and species persistence is of great interest to molecular ecology, especially for species-rich radiations inhabiting the world’s biodiversity hotspots. The toolbox of population genomics holds great promise for addressing these key issues, especially if genomic data are analyzed within a spatially and ecologically explicit context. We have studied the earliest stages of the divergence continuum in the Restionaceae, a species-rich and ecologically important plant family of the Cape...
1. Many animals hoard seeds for later consumption and establish seed caches that are often located at sites with specific environmental characteristics. One explanation for the selection of non-random caching locations is the avoidance of pilferage by other animals. Another possible hypothesis is that animals choose locations that hamper the perishability of stored food, allowing the consumption of unspoiled food items over long time periods. 2. We examined seed perishability and pilferage-avoidance as potential drivers...
Data from: Caves as microrefugia: Pleistocene phylogeography of the troglophilic North American scorpion Pseudouroctonus reddelliRobert W. Bryson, Lorenzo Prendini, Warren E. Savary & Peter B. Pearman
Background: Survival in microrefugia represents an important paradigm in phylogeography for explaining rapid postglacial re-colonization by species in temperate regions. Microrefugia may allow populations to persist in areas where the climatic conditions on the surface have become unfavourable. Caves generally contain stable microclimates and may represent microrefugia for species capable of exploiting both cave and surface habitats (troglophiles). We examine the phylogeography of the troglophilic North American vaejovid scorpion Pseudouroctonus reddelli using 1,993 base pairs...
Data from: Modelling plant species distribution in alpine grasslands using airborne imaging spectroscopyJulien Pottier, Zbyněk Malenovský, Achilleas Psomas, Lucie Homolová, Michael E. Schaepman, Philippe Choler, Wilfried Thuiller, Antoine Guisan & Niklaus E. Zimmermann
Remote sensing using airborne imaging spectroscopy (AIS) is known to retrieve fundamental optical properties of ecosystems. However, the value of these properties for predicting plant species distribution remains unclear. Here, we assess whether such data can add value to topographic variables for predicting plant distributions in French and Swiss alpine grasslands. We fitted statistical models with high spectral and spatial resolution reflectance data and tested four optical indices sensitive to leaf chlorophyll content, leaf water...
Data from: Seasonality of precipitation interacts with exotic species to alter composition and phenology of a semi-arid grasslandJanet S. Prevéy & Timothy R. Seastedt
While modeling efforts suggest that invasive species will track climate changes, empirical studies are few. A relevant and largely unaddressed research question is: how will the presence of exotic species interact with precipitation change to alter ecosystem structure and function? We studied the effects of changes in seasonal timing of precipitation on species composition and resource availability in a grassland community in Colorado, USA. We examined how seasonal precipitation patterns affect the abundance of historically...
Data from: Vertical distribution of the soil microbiota along a successional gradient in a glacier forefieldThomas Rime, Martin Hartmann, Ivano Brunner, Franco Widmer, Josef Zeyer & Beat Frey
Spatial patterns of microbial communities have been extensively surveyed in well-developed soils, but few studies investigated the vertical distribution of microorganisms in newly developed soils after glacier retreat. We used 454-pyrosequencing to assess whether bacterial and fungal community structures differed between stages of soil development (SSD) characterized by an increasing vegetation cover from barren (vegetation cover: 0%/ age: 10 years), sparsely-vegetated (13%/ 60 years), transient (60%/ 80 years) to vegetated (95%/ 110 years) and depths...
Data from: Assessing the impact of beach nourishment on the intertidal food web through the development of a mechanistic-envelope modelSarah Vanden Eede, Joke Van Tomme, Charlotte De Busschere, Martijn Vandegehuchte, Koen Sabbe, Eric W. M. Stienen, Steven Degraer, Magda Vincx, Dries Bonte, Martijn L. Vandegehuchte & Eric W.M. Stienen
Beach nourishment, the placement of sand onto a sediment-starved stretch of coast, is widely applied as a soft coastal protection measure because of its reduced ecological impact relative to hard coastal protection. In order to predict effects on the intertidal sandy beach ecosystem, we developed a simulation model that integrates species envelope-based projections for the dominant macrobenthos species and mechanistic food web modules for higher trophic levels. Species envelopes were estimated by using Bayesian inference...
Data from: The role of climatic tolerances and seed traits in reduced extinction rates of temperate PolygonaceaeAnna Kostikova, Nicolas Salamin & Peter B. Pearman
The latitudinal diversity gradient (LDG) is one of the most striking and consistent biodiversity patterns across taxonomic groups. We investigate the species richness gradient in the buckwheat family, Polygonaceae, which exhibits a reverse LDG and is, thus, decoupled from dominant gradients of energy and environmental stability that increase towards the tropics and confound mechanistic interpretations. We test competing age and evolutionary diversification hypotheses, which may explain the diversification of this plant family over the past...
Data from: Small-scale patterns in snowmelt timing affect gene flow and the distribution of genetic diversity in the alpine dwarf shrub Salix herbaceaAndrés J. Cortés, Stephan Waeber, Christian Lexer, Janosch Sedlacek, Julia A. Wheeler, Mark Van Kleunen, Oliver Bossdorf, Günter Hoch, Christian Rixen, Sonja Wipf & Sophie Karrenberg
Current threats to biodiversity, such as climate change, are thought to alter the within-species genetic diversity among microhabitats in highly heterogeneous alpine environments. Assessing the spatial organization and dynamics of genetic diversity within species can help to predict the responses of organisms to environmental change. In this study, we evaluated whether small-scale heterogeneity in snowmelt timing restricts gene flow between microhabitats in the common long-lived dwarf shrub Salix herbacea L. We surveyed 273 genets across...
Data from: Microclimatic differentiation of gene pools in the Lobaria pulmonaria symbiosis in a primeval forest landscapeOlga Nadyeina, Lyudmyla Dymytrova, Anna Naumovych, Sergey Postoyalkin, Silke Werth, Saran Cheenacharoen, Christoph Scheidegger & Sergyi Postoyalkin
Population genetics of the tree-colonizing lichen Lobaria pulmonaria were studied in the largest primeval beech forest of Europe, covering 10 000 ha. During an intensive survey of the area, we collected 1522 thallus fragments originating from 483 trees, which were genotyped with 8 myco- and 14 photobiont-specific microsatellite markers. The mycobiont and photobiont of L. pulmonaria were found to consist of two distinct gene pools, which are co-existing within small areas of 3–180 ha in...
Swiss Federal Institute for Forest, Snow and Landscape Research12
University of Lausanne3
Swiss Institute of Bioinformatics2
University of Fribourg2
Grenoble Alpes University2
Research Institute for Nature and Forest1
Senckenberg Nature Research Society1
Royal Botanic Gardens1
Burke Museum of Natural History and Culture1