38 Works

Data from: Establishing a community-wide DNA barcode library as a new tool for arctic research

H. Wirta, G. Várkonyi, C. Rasmussen, R. Kaartinen, N. M. Schmidt, P. D. N. Hebert, M. Barták, G. Blagoev, H. Disney, S. Ertl, P. Gjelstrup, D. J. Gwiazdowicz, L. Huldén, J. Ilmonen, J. Jakovlev, M. Jaschhof, J. Kahanpää, T. Kankaanpää, P. H. Krogh, R. Labbee, C. Lettner, V. Michelsen, S. A. Nielsen, T. R. Nielsen, L. Paasivirta … & T. Roslin
DNA sequences offer powerful tools for describing the members and interactions of natural communities. In this study, we establish the to-date most comprehensive library of DNA barcodes for a terrestrial site, including all known macroscopic animals and vascular plants of an intensively studied area of the High Arctic, the Zackenberg Valley in Northeast Greenland. To demonstrate its utility, we apply the library to identify nearly 20 000 arthropod individuals from two Malaise traps, each operated...

Data from: Nested species interactions promote feasibility over stability during the assembly of a pollinator community

Serguei Saavedra, Rudolf P. Rohr, Jens M. Olesen & Jordi Bascompte
The foundational concepts behind the persistence of ecological communities have been based on two ecological properties: dynamical stability and feasibility. The former is typically regarded as the capacity of a community to return to an original equilibrium state after a perturbation in species abundances and is usually linked to the strength of interspecific interactions. The latter is the capacity to sustain positive abundances on all its constituent species and is linked to both interspecific interactions...

Data from: Population structure, genetic variation and linkage disequilibrium in perennial ryegrass populations divergently selected for freezing tolerance

Mallikarjuna Rao Kovi, Siri Fjellheim, Simen R. Sandve, Arild Larsen, Heidi Rudi, Torben Asp, Matthew Peter Kent & Odd Arne Rognli
Low temperature is one of the abiotic stresses seriously affecting the growth of perennial ryegrass (Lolium perenne L. Understanding the genetic control of freezing tolerance would aid in the development of cultivars of perennial ryegrass with improved adaptation to frost. A total number of 80 individuals (24 of High frost [HF]; 29 of Low frost [LF] and 27 of Unselected [US]) from the second generation of the two divergently selected populations and an unselected control...

Data from: \"Diagnostic SNPs for inferring population structure in American mink (Neovison vison) identified through RAD sequencing\" in Genomic Resources Notes accepted 1 October 2014 to 30 November 2014

Janne Pia Thirstrup, Aritz Ruiz-Gonzalez, Jose Martin Pujolar, Peter Foged Larsen, Rasmus O. Nielsen, Ettore Randi, Andrzej Zalewski, Cino Pertoldi, Mariella Baratti, Tiziana Di Lorenzo, Alessio Iannucci, Diana Maria Paola Galassi, Valentina Iannilli, Just Jensen, Dragos Postolache & Giovanni Giuseppe Vendramin
The article documents the public availability of RAD sequencing data and generated SNPs for the American mink (Neovison vison). 224,095 polymorphic loci were identified from 14 mink from which primers were designed for a subset of 380 SNPs. The panel was tested on 211 mink. Fisher’s F-statistics (Fis, FIT and FST) as well as observed (HO), expected (HE) and unbiased expected (uHE) heterozygosity was calculated for the SNPs and 194 SNPs was validated as being...

Data from: Range-dependent flexibility in the acoustic field of view of echolocating porpoises (Phocoena phocoena)

Danuta M. Wisniewska, John M. Ratcliffe, Kristian Beedholm, Christian B. Christensen, Mark Johnson, Jens C. Koblitz, Magnus Wahlberg & Peter M. Madsen
Toothed whales use sonar to detect, locate, and track prey. They adjust emitted sound intensity, auditory sensitivity and click rate to target range, and terminate prey pursuits with high-repetition-rate, low-intensity buzzes. However, their narrow acoustic field of view (FOV) is considered stable throughout target approach, which could facilitate prey escape at close-range. Here, we show that, like some bats, harbour porpoises can broaden their biosonar beam during the terminal phase of attack but, unlike bats,...

Data from: Contrasting the roles of section length and instream habitat enhancement for river restoration success: a field study on 20 European restoration projects

Daniel Hering, Jukka Aroviita, Annette Baattrup-Pedersen, Karel Brabec, Tom Buijse, Frauke Ecke, Nikolai Friberg, Marek Gielczewski, Kathrin Januschke, Jan Köhler, Benjamin Kupilas, Armin W. Lorenz, Susanne Muhar, Amael Paillex, Michaela Poppe, Torsten Schmidt, Stefan Schmutz, Jan Vermaat, Piet F. M. Verdonschot, Ralf C. M. Verdonschot, Jochem Kail & Christian Wolter
1. Restoration of river hydromorphology often has limited detected effects on river biota. One frequently discussed reason is that the restored river length is insufficient to allow populations to develop and give the room for geomorphologic processes to occur. 2. We investigated ten pairs of restored river sections of which one was a large project involving a long, intensively restored river section and one represented a smaller restoration effort. The restoration effect was quantified by...

Data from: Density-dependent, central-place foraging in a grazing herbivore: competition and trade-offs in time allocation near water

David Rozen-Rechels, Floris M. Van Beest, Emmanuelle Richard, Antonio Uzal, Sarah A. Medill & Philip Dunstan McLoughlin
Optimal foraging theory addresses one of the core challenges of ecology: predicting the distribution and abundance of species. Tests of hypotheses of optimal foraging, however, often focus on a single conceptual model rather than drawing upon the collective body of theory, precluding generalization. Here we demonstrate links between two established theoretical frameworks predicting animal movements and resource use: central-place foraging and density-dependent habitat selection. Our goal is to better understand how the nature of critical,...

Data from: Low evolutionary potential for egg-to-adult viability in Drosophila melanogaster at high temperatures

Torsten Nygaard Kristensen, Johannes Overgaard, Jan Lassen, Ary A. Hoffmann & Carla M. Sgro
To cope with the increasing and less predictable temperature forecasts under climate change, many terrestrial ectotherms will have to migrate or rely on adaptation through plastic or evolutionary means. Studies suggest that some ectotherms have a limited potential to change their upper thermal limits via evolutionary shifts, but research has mostly focused on adult life stages under laboratory conditions. Here we use replicate populations of Drosophila melanogaster and a nested half sib/full sib quantitative genetic...

Data from: Inbreeding depression across a nutritional stress continuum

Mads F. Schou, Volker Loeschcke & Torsten F. Kristensen
Many natural populations experience inbreeding and genetic drift as a consequence of nonrandom mating or low population size. Furthermore, they face environmental challenges that may interact synergistically with deleterious consequences of increased homozygosity and further decrease fitness. Most studies on inbreeding–environment (I-E) interactions use one or two stress levels, whereby the resolution of the possible stress and inbreeding depression interaction is low. Here we produced Drosophila melanogaster replicate populations, maintained at three different population sizes...

Data from: The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) statement: methods for arriving at consensus and developing reporting guidelines

Stuart G. Nicholls, Pauline Quach, Erik Von Elm, Astrid Guttmann, David Moher, Irene Petersen, Henrik T. Sørensen, Liam Smeeth, Sinéad M. Langan & Eric I. Benchimol
Objective: Routinely collected health data, collected for administrative and clinical purposes, without specific a priori research questions, are increasingly used for observational, comparative effectiveness, health services research, and clinical trials. The rapid evolution and availability of routinely collected data for research has brought to light specific issues not addressed by existing reporting guidelines. The aim of the present project was to determine the priorities of stakeholders in order to guide the development of the REporting...

Data from: Individual, unit, and vocal clan level identity cues in sperm whale codas

Shane Gero, Hal Whitehead & Luke Rendell
The ‘social complexity hypothesis’ suggests that complex social structure is a driver of diversity in animal communication systems. Sperm whales have a hierarchically structured society in which the largest affiliative structures, the vocal clans, are marked on ocean-basin scales by culturally transmitted dialects of acoustic signals known as ‘codas’. We examined variation in coda repertoires among both individual whales and social units—the basic element of sperm whale society—using data from nine Caribbean social units across...

Data from: Environmental gradients and the evolution of successional habitat specialization: a test case with 14 Neotropical forest sites

Susan G. Letcher, Jesse R. Lasky, Robin L. Chazdon, Natalia Norden, S. Joseph Wright, Jorge A. Meave, Eduardo A. Pérez-García, Rodrigo Muñoz, Eunice Romero-Pérez, Ana Andrade, José Luis Andrade, Patricia Balvanera, Justin M. Becknell, Tony V. Bentos, Radika Bhaskar, Frans Bongers, Vanessa Boukili, Pedro H. S. Brancalion, Ricardo G. César, Deborah A. Clark, David B. Clark, Dylan Craven, Alexander DeFrancesco, Juan M. Dupuy, Bryan Finegan … & G. Bruce Williamson
1. Successional gradients are ubiquitous in nature, yet few studies have systematically examined the evolutionary origins of taxa that specialize at different successional stages. Here we quantify successional habitat specialization in Neotropical forest trees and evaluate its evolutionary lability along a precipitation gradient. Theoretically, successional habitat specialization should be more evolutionarily conserved in wet forests than in dry forests due to more extreme microenvironmental differentiation between early and late successional stages in wet forest. 2....

Data from: The impact of selection, gene flow and demographic history on heterogeneous genomic divergence: threespine sticklebacks in divergent environments

Anne-Laure Ferchaud & Michael M. Hansen
Heterogeneous genomic divergence between populations may reflect selection, but should also be seen in conjunction with gene flow and drift, particularly population bottlenecks. Marine and freshwater threespine stickleback (Gasterosteus aculeatus) populations often exhibit different lateral armor plate morphs. Moreover, strikingly parallel genomic footprints across different marine-freshwater population pairs are interpreted as parallel evolution and gene reuse. Nevertheless, in some geographic regions like the North Sea and Baltic Sea different patterns are observed. Freshwater populations in...

Data from: Impact of disease on diversity and productivity of plant populations

Henry E. Creissen, Tove H. Jorgensen & James K. M. Brown
Experiments were conducted on the role of intra- and inter-genotypic competition in ecological processes operating at the population scale in diseased plant populations. Combinations of Arabidopsis thaliana genotypes showing variation for phenotypic traits relating to competitive ability and pathogen compatibility were infected with the oomycete Hyaloperonospora arabidopsidis and Turnip yellows virus in separate experiments. Plant fitness and competitive ability were estimated from phenotypic measurements. Pathogen-induced reduction in competitive ability for susceptible genotypes increased the competitive...

Data from: Eelgrass (Zostera marina) food web structure in different environmental settings

Jonas Thormar, Harald Hasler-Sheetal, Susanne Baden, Christoffer Boström, Kevin Kuhlmann Clausen, Dorte Krause-Jensen, Birgit Olesen, Jonas Ribergaard Rasmussen, Carl Johan Svensson & Marianne Holmer
This study compares the structure of eelgrass (Zostera marina L.) meadows and associated food webs in two eelgrass habitats in Denmark, differing in exposure, connection to the open sea, nutrient enrichment and water transparency. Meadow structure strongly reflected the environmental conditions in each habitat. The eutrophicated, protected site had higher biomass of filamentous algae, lower eelgrass biomass and shoot density, longer and narrower leaves, and higher above to below ground biomass ratio compared to the...

Data from: High-arctic butterflies become smaller with rising temperatures

Joseph J. Bowden, Anne Eskildsen, Rikke R. Hansen, Kent Olsen, Carolyn M. Kurle & Toke Høye
The response of body size to increasing temperature constitutes a universal response to climate change that could strongly affect terrestrial ectotherms, but the magnitude and direction of such responses remain unknown in most species. The metabolic cost of increased temperature could reduce body size but long growing seasons could also increase body size as was recently shown in an Arctic spider species. Here, we present the longest known time series on body size variation in...

Data from: Competition is a strong driving factor in wetlands, peaking during drying out periods

Amandine Merlin, Anne Bonis, Christian F. Damgaard & François Mesléard
The aim of the study is to investigate the relative importance of plant-plant interactions with regard to flooding and drought effect on perennial plant performances in wetlands. Flooding is expected to be the major driver and, accordingly, the importance of drought is hardly if ever taken into account. Focusing on five widespread species, the growth, the survival and the competitive ability of plants were monitored on permanent plots spread along two elevation gradients. Flooding duration...

Data from: Awareness programs and change in taste-based caste prejudice

Ritwik Banerjee & Nabanita Datta Gupta
Becker's theory of taste-based discrimination predicts that relative employment of the discriminated social group will improve if there is a decrease in the level of prejudice for the marginally discriminating employer. In this paper we experimentally test this prediction offered by Garry Becker in his seminal work on taste based discrimination, in the context of caste in India, with management students (potential employers in the near future) as subjects. First, we measure caste prejudice and...

Data from: High-throughput sequencing of nematode communities from total soil DNA extractions

Rumakanta Sapkota & Mogens Nicolaisen
Background: Nematodes are extremely diverse and numbers of species are predicted to be more than a million. Studies on nematode diversity are difficult and laborious using standard methods such as identification based on morphology and therefore high-throughput sequencing is an attractive alternative. Generally, primers that have been used for generating amplicons for sequencing are not nematode specific and also amplify other groups such as fungi and plantae. Thus a nematode enrichment step must be included...

Data from: \"Transcriptome resources for two non-model freshwater crustacean species\" in Genomic Resources Notes accepted 1 October 2014 to 30 November 2014

Mariella Baratti, Federica Cattonaro, Tiziana Di Lorenzo, Valentina Iannilli, Alessio Iannucci, Diana Maria Paola Galassi, Dragos Postolache & Giovanni Giuseppe Vendramin
The aim of this study was to characterize the whole transcriptomes of two common Mediterranean freshwater crustaceans: the copepod Eucyclops serrulatus (Fischer, 1851) and the amphipod Echinogammarus veneris Heller, 1865. Whole transcriptomic approaches may assist in studying the response to environmental pollution of species with little or no available genomic information, allowing the identification of genes involved in adaptation processes to polluted environments that can be studied in expression profile variation at a later stage....

Data from: Global effects of soil and climate on leaf photosynthetic traits and rates

Vincent Maire, Ian J. Wright, I. Colin Prentice, Niels H. Batjes, Radika Bhaskar, Peter M. Van Bodegom, Will K. Cornwell, David Ellsworth, Ülo Niinemets, Alejandro Ordoñez, Peter B. Reich & Louis S. Santiago
Aim: The influence of soil properties on photosynthetic traits in higher plants is poorly quantified in comparison with that of climate. We address this situation by quantifying the unique and joint contributions to global leaf-trait variation from soils and climate. Location: Terrestrial ecosystems world-wide. Methods: Using a trait dataset comprising 1509 species from 288 sites, with climate and soil data derived from global datasets, we quantified the effects of 20 soil and 26 climate variables...

Data from: Concurrent effects of cold and hyperkalaemia cause insect chilling injury

Heath A. MacMillan, Erik Baatrup & Johannes Overgaard
Chilling injury and death are the ultimate consequence of low temperature exposure for chill susceptible insects, and low temperature tolerance is considered one of the most important factors determining insect distribution patterns. The physiological mechanisms that cause chilling injury are unknown, but chronic cold exposure that causes injury is consistently associated with elevated extracellular [K+], and cold tolerant insects possess a greater capacity to maintain ion balance at low temperatures. Here, we use the muscle...

Data from: Optimal numbers of matings: the conditional balance between benefits and costs of mating for females of a nuptial gift-giving spider

Søren Toft & Maria J. Albo
In species where females gain a nutritious nuptial gift during mating, the balance between benefits and costs of mating may depend on access to food. This means that there is not one optimal number of matings for the female but a range of optimal mating numbers. With increasing food availability, the optimal number of matings for a female should vary from the number necessary only for fertilization of her eggs to the number needed also...

Data from: Is it worthwhile scaring geese to alleviate damage to crops? – an experimental study

Caroline Ernberg Simonsen, Jesper Madsen, Ingunn M. Tombre & Jacob Nabe-Nielsen
Increasing population sizes of geese are the cause of numerous agricultural conflicts in many regions of the Northern Hemisphere. Scaring is often used as a tool to chase geese away from fields, either as a means to protect vulnerable crops or as part of goose management schemes to drive geese to accommodation areas. Geese are quick to habituate to stationary scaring devices; hence, active scaring by humans is often employed. However, it remains undocumented how...

Data from: Climate vs. topography – spatial patterns of plant species diversity and endemism on a high-elevation island

Severin D. H. Irl, David E. V. Harter, Manuel J. Steinbauer, David Gallego Puyol, José María Fernández-Palacios, Anke Jentsch & Carl Beierkuhnlein
1. Climate and topography are among the most fundamental drivers of plant diversity. Here, we assess the importance of climate and topography in explaining diversity patterns of species richness, endemic richness and endemicity on the landscape scale of an oceanic island, and evaluate the independent contribution of climatic and topographic variables to spatial diversity patterns. 2. We constructed a presence/absence matrix of perennial endemic and native vascular plant species (including subspecies) in 890 plots on...

Registration Year

  • 2015
    38

Resource Types

  • Dataset
    38

Affiliations

  • Aarhus University
    38
  • Aalborg University
    5
  • VU University Amsterdam
    2
  • Finnish Environment Institute
    2
  • University of California, San Diego
    2
  • University of Minnesota
    2
  • Polish Academy of Sciences
    2
  • University of Gothenburg
    2
  • University of Oslo
    2
  • University of St Andrews
    2