38 Works

Data from: Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes

Laura S. Epp, Galina Gussarova, Sanne Boessenkool, Jesper Olsen, James Haile, Audun Schrøder-Nielsen, Anna Ludikova, Kristian Hassel, Hans K. Stenøien, Svend V. Funder, Eske Willerslev, Kurt Kjær & Christian Brochmann
High Arctic environments are particularly sensitive to climate changes, but retrieval of paleoecological data is challenging due to low productivity and biomass. At the same time, Arctic soils and sediments have proven exceptional for long-term DNA preservation due to their constantly low temperatures. Lake sediments contain DNA paleorecords of the surrounding ecosystems and can be used to retrieve a variety of organismal groups from a single sample. In this study, we analyzed vascular plant, bryophyte,...

Data from: Can differential nutrient extraction explain property variations in a predatory trap?

Sean J. Blamires, Dakota Piorkowski, Angela Chuang, Yi-Hsuan Tseng, Søren Toft, I-Min Tso & I.-M. Tso
Predators exhibit flexible foraging to facilitate taking prey that offer important nutrients. Because trap-building predators have limited control over the prey they encounter, differential nutrient extraction and trap architectural flexibility may be used as a means of prey selection. Here, we tested whether differential nutrient extraction induces flexibility in architecture and stickiness of a spider's web by feeding Nephila pilipes live crickets (CC), live flies (FF), dead crickets with the web stimulated by flies (CD)...

Data from: Phylogeny, classification, and fruit evolution of the species-rich Neotropical bellflowers (Campanulaceae: Lobelioideae)

Laura P. Lagomarsino, Alexandre Antonelli, Nathan Muchhala, Allan Timmermann, Sarah Mathews & Charles C. Davis
Premise of the study: The species-rich Neotropical genera Centropogon, Burmeistera, and Siphocampylus represent more than half of the ∼1200 species in the subfamily Lobelioideae (Campanulaceae). They exhibit remarkable morphological variation in floral morphology and habit. Limited taxon sampling and phylogenetic resolution, however, obscures our understanding of relationships between and within these genera and underscores our uncertainty of the systematic value of fruit type as a major diagnostic character. Methods: We inferred a phylogeny from five...

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