14 Works

Data from: A small badge of longevity: opposing survival selection on the size of white and black wing markings

Tuul Sepp, Kalev Rattiste, Lauri Saks, Richard Meitern, Janek Urvik, Ants Kaasik & Peeter Hõrak
According to handicap principle, exaggerated ornamental traits are supposed to exert costs on their bearers. However, there is much less theoretical and practical consensus about whether and under which conditions ornament expression should positively correlate with survival. We measured age-related variation and survival selection on the size of white wing patches and black wing tips in a long-lived monogamous seabird, the common gull Larus canus. Males had larger white patches than females but patch size...

Data from: Community assembly and drivers of phytoplankton functional structure

Riina Klais, Veera Norros, Sirpa Lehtinen, Timo Tamminen & Kalle Olli
We analysed the functional composition of coastal phytoplankton communities (n = 7941) along the gradient from marine to brackish waters of the Baltic Sea, using species-specific morphological and ecological functional traits (ability to fix atmospheric nitrogen, mixotrophy, use of silica in cell walls, formation of chains or colonies, motility, accessory pigment composition, and size), to describe and measure the functional differences between species. Mean pairwise functional distance of phytoplankton communities increased from spring to mid-...

Data from: Ectomycorrhizal and saprotrophic fungi respond differently to long-term experimentally increased snow depth in the High Arctic

Sunil Mundra, Rune Halvorsen, Håvard Kauserud, Mohammad Bahram, Leho Tedersoo, Bo Elberling, Elisabeth J. Cooper & Pernille Bronken Eidesen
Changing climate is expected to alter precipitation patterns in the Arctic, with consequences for subsurface temperature and moisture conditions, community structure, and nutrient mobilization through microbial belowground processes. Here, we address the effect of increased snow depth on the variation in species richness and community structure of ectomycorrhizal (ECM) and saprotrophic fungi. Soil samples were collected weekly from mid-July to mid-September in both control and deep snow plots. Richness of ECM fungi was lower, while...

Data from: Is telomere length a molecular marker of past thermal stress in wild fish?

Paul V. Debes, Marko Visse, Bineet Panda, Petteri Ilmonen & Anti Vasemägi
Telomeres protect eukaryotic chromosomes; variation in telomere length has been linked (primarily in homoeothermic animals) to variation in stress, cellular ageing and disease risk. Moreover, telomeres have been suggested to function as biomarker for quantifying past environmental stress, but studies in wild animals remain rare. Environmental stress, such as extreme environmental temperatures in poikilothermic animals, may result in oxidative stress that accelerates telomere attrition. However, growth, which may depend on temperature, can also contribute to...

Data from: Outlier loci detect intraspecific biodiversity amongst spring and autumn spawning herring across local scales

Riho Gross, Dorte Bekkevold, Sarah J. Helyar, Timo Arula & Henn Ojaveer
Herring, Clupea harengus, is one of the ecologically and commercially most important species in European northern seas, where two distinct ecotypes have been described based on spawning time; spring and autumn. To date, it is unknown if these spring and autumn spawning herring constitute genetically distinct units. We assessed levels of genetic divergence between spring and autumn spawning herring in the Baltic Sea using two types of DNA markers, microsatellites and Single Nucleotide Polymorphisms, and...

Data from: Plasticity in plant functional traits is shaped by variability in neighbourhood species composition

Maria Abakumova, Kristjan Zobel, Anu Lepik & Marina Semchenko
Plant functional traits can vary widely as a result of phenotypic plasticity to abiotic conditions. Trait variation may also reflect responses to the identity of neighbours, although not all species are equally responsive to their biotic surroundings. We hypothesized that responses to neighbours are shaped by spatial community patterns and resulting variability in neighbour composition. More precisely, we tested the theoretical prediction that plasticity is most likely to evolve if alternative environments (in this case,...

Data from: Predator encounters have spatially extensive impacts on parental behaviour in a breeding bird community

Kadri Moks, Vallo Tilgar, Robert L. Thomson, Sara Calhim, Pauliina E. Järvistö, Wiebke Schuett, William Velmala & Toni Laaksonen
Predation risk has negative indirect effects on prey fitness, partly mediated through changes in behaviour. Evidence that individuals gather social information from other members of the population suggests that events in a community may impact the behaviour of distant individuals. However, spatially wide-ranging impacts on individual behaviour caused by a predator encounter elsewhere in a community have not been documented before. We investigated the effect of a predator encounter (hawk model presented at a focal...

Data from: North-Western Palaearctic species of the Pristiphora ruficornis group (Hymenoptera, Tenthredinidae)

Marko Prous, Veli Vikberg, Andrew David Liston & Katja Kramp
The Pristiphora ruficornis group, defined here based on the structure of the penis valve and the genetic data, includes morphologically and genetically highly similar species that remain taxonomically challenging. Study of most of the relevant type material, examination of female saws and male genitalia, some rearing experiments, and genetic data enabled us to solve most of the taxonomic problems involving northern European taxa. As a result, 17 species are recognised in northern Europe. The following...

Data from: Causal link between insulin-like growth factor 1 and growth in nestlings of a wild passerine bird

Jaanis Lodjak, Marko Mägi, Elin Sild & Raivo Mänd
Life history of animals is strongly linked with the variability in postnatal growth rates, because the ability to achieve necessary body mass early in life is directly connected with the ability to survive and reproduce later in life. Surprisingly, little is known about the physiological mechanisms connecting food availability with the variability of growth in wild animals. We used a hormonal injection treatment in free-living nestlings of the pied flycatcher (Ficedula hypoleuca). In doing this,...

Data from: The reciprocal relationship between competition and intraspecific trait variation

Jonathan A. Bennett, Kersti Riibak, Riin Tamme, Rob J. Lewis & Meelis Pärtel
Trait differences among plants are expected to influence the outcome of competition; competition should be strongest between similar species (or individuals) under limiting similarity, and between dissimilar species within competitive hierarchies. These hypotheses are often used to infer competitive dynamics from trait patterns within communities. However, plant traits are frequently plastic in response to competition. This variation is poorly accounted for in trait-based studies of competition and community assembly. To explore the relationship between trait...

Data from: Functional traits of marine macrophytes predict primary production

Holger Jänes, Jonne Kotta, Merli Pärnoja, Tasman P. Crowe, Fabio Rindi & Helen Orav-Kotta
The relationship between community structure and the functioning of ecosystems is the subject of ongoing debate. Biological or functional trait-based approaches that capture life strategy, morphology and behavioural characteristics have received far less attention than taxonomic diversity in this context, despite their more intuitive link to ecosystem functioning. Macrophyte primary production underpins aquatic food webs, regulates benthic and pelagic ecosystems and is a key aspect of the global carbon cycle. This study spans a range...

Data from: Homogenous population genetic structure of the non-native raccoon dog (Nyctereutes procyonoides) in Europe as a result of rapid population expansion

Frank Drygala, Николай Кораблев, Hermann Ansorge, Joerns Fickel, Marja Isomursu, Morten Elmeros, Rafal Kowalczyk, Laima Baltrunaite, Linas Balciauskas, Urmas Saarma, Christoph Schulze, Peter Borkenhagen, Alain C. Frantz & Rafał Kowalczyk
The extent of gene flow during the range expansion of non-native species influences the amount of genetic diversity retained in expanding populations. Here, we analyse the population genetic structure of the raccoon dog (Nyctereutes procyonoides) in north-eastern and central Europe. This invasive species is of management concern because it is highly susceptible to fox rabies and an important secondary host of the virus. We hypothesized that the large number of introduced animals and the species’...

Data from: Parasite infection and decreased thermal tolerance: impact of proliferative kidney disease (PKD) on a wild salmonid fish in the context of climate change

Matthieu Bruneaux, Marko Visse, Riho Gross, Lilian Pukk, Lauri Saks & Anti Vasemägi
Parasites and pathogens can have an important effect on their host's thermal resistance. The impact of parasite infection on host physiological performances has traditionally been studied in controlled laboratory conditions, and much less is known about its actual effects in wild populations. Nonetheless, such knowledge is critical when assessing the effect of climate change on the future survival of the host. Tetracapsuloides bryosalmonae is a myxozoan endoparasite causing proliferative kidney disease (PKD) in salmonids. Infection...

Data from: A synthesis of empirical plant dispersal kernels

James M. Bullock, Laura Mallada González, Riin Tamme, Lars Götzenberger, Steven M. White, Meelis Pärtel & Danny A. P. Hooftman
Dispersal is fundamental to ecological processes at all scales and levels of organization, but progress is limited by a lack of information about the general shape and form of plant dispersal kernels. We addressed this gap by synthesizing empirical data describing seed dispersal and fitting general dispersal kernels representing major plant types and dispersal modes. A comprehensive literature search resulted in 107 papers describing 168 dispersal kernels for 144 vascular plant species. The data covered...

Registration Year

  • 2016
    14

Resource Types

  • Dataset
    14

Affiliations

  • University of Tartu
    14
  • Estonian University of Life Sciences
    4
  • University of Turku
    3
  • Aarhus University
    2
  • UNSW Sydney
    2
  • University of Hamburg
    1
  • Queen's University Belfast
    1
  • Centre for Ecology and Hydrology
    1
  • The Arctic University of Norway
    1
  • Daugavpils University
    1