13 Works

Data from: Disentangling the processes driving plant assemblages in mountain grasslands across spatial scales and environmental gradients

Daniel Scherrer, Heidi K. Mod, Julien Pottier, Anne Dubuis-Litsios, Loïc Pellissier, Pascal Vittoz, Lars Götzenberger, Martin Zobel & Antoine Guisan
Habitat filtering and limiting similarity are well‐documented ecological assembly processes that hierarchically filter species across spatial scales, from a regional pool to local assemblages. However, information on the effects of fine‐scale spatial partitioning of species, working as an additional mechanism of coexistence, on community patterns is much scarcer. In this study, we quantified the importance of fine‐scale spatial partitioning, relative to habitat filtering and limiting similarity in structuring grassland communities in the western Swiss Alps....

Data from: PROTAX-fungi: a web-based tool for probabilistic taxonomic placement of fungal ITS sequences

Kessy Abarenkov, Panu Somervuo, R. Henrik Nilsson, Paul M. Kirk, Tea Huotari, Nerea Abrego & Otso Ovaskainen
• Incompleteness of reference sequence databases and unresolved taxonomic relationships complicates taxonomic placement of fungal sequences. We developed PROTAX-fungi, a general tool for taxonomic placement of fungal ITS sequences, and implemented it into the PlutoF platform of the UNITE database for molecular identification of fungi. • PROTAX-fungi outperformed the SINTAX and RDB classifiers in terms of increased accuracy and decreased calibration error when applied to data on mock communities representing species groups with poor sequence...

Data from: Nematode community responses to range-expanding and native plant communities in original and new range soils

Rutger A. Wilschut, Olga Kostenko, Kadri Koorem & Wim H. Van Der Putten
Many plant species expand their range to higher latitudes in response to climate change. However, it is poorly understood how biotic interactions in the new range differ from interactions in the original range. Here, in a mesocosm experiment, we analyze nematode community responses in original and new range soils to plant communities with either 1) species native in both the original and new range, 2) range-expanding species related to these natives (related range-expanders), or 3)...

Data from: Reproductive behaviour indicates specificity in resource use: phylogenetic examples from temperate and tropical insects

Sille Holm, Juhan Javoiš, Erki Õunap, Robert B. Davis, Ants Kaasik, Freerk Molleman, Tõnis Tasane & Toomas Tammaru
Specificity (= the degree of ecological specialisation) is one of the fundamental concepts of the science of ecology. Ambiguities on how to define and measure specificity have however complicated respective research efforts. Here we propose that, in insects, a behavioural trait –adult oviposition latency in captivity without a favourable host plant – correlates with a species’ specificity in larval host use. In the absence of a suitable host, monophagous insects are expected to wait for...

Data from: Independent and interactive effects of immune activation and larval diet on adult immune function, growth and development in the greater wax moth (Galleria mellonella)

Katariina Kangassalo, Terhi M. Valtonen, Jouni Sorvari, Sanita Kecko, Mari Pölkki, Indrikis Krams, Tatjana Krama & Markus J. Rantala
Organisms in the wild are likely to face multiple immune challenges as well as additional ecological stressors, yet their interactive effects on immune function are poorly understood. Insects are found to respond to cues of increased infection risk by enhancing their immune capacity. However, such adaptive plasticity in immune function may be limited by physiological and environmental constraints. Here, we investigated the effects of two environmental stressors – poor larval diet and an artificial parasite-like...

Data from: Weak and inconsistent associations between melanic darkness and fitness related traits in an insect

Siiri-Lii Sandre, Tanel Kaart, Nathan Morehouse & Toomas Tammaru
The idea that the fitness value of body colouration may be affected by biochemically mediated trade-offs has received much research attention. For example, melanisation is believed to interact with other fitness-related traits via competition for substrates, costs associated with the synthesis of melanin, or pleiotropic effects of the involved genes. However, genetic correlations between colouration and fitness-related traits remain poorly understood. Here we present a quantitative genetic study of a colouration trait correlated to melanin-based...

Data from: Plant diversity in oceanic archipelagos: realistic patterns emulated by an agent‐based computer simulation

Madli Jõks & Meelis Pärtel
Although islands as natural laboratories have held the attention of scientists for centuries, they continue to offer new study questions, especially in the context of the current biodiversity crisis. To date, habitat diversity on islands and spatial configuration of archipelagos have received less attention than classical island area and isolation. Moreover, in the field where experiments are impossible, correlative methods have dominated, despite the call for more mechanistic approaches. We developed an agent‐based computer simulation...

Data from: Multi-level patterns in population genetics: variogram series detects a hidden isolation-by- distance- dominated structure of Scandinavian brown bears Ursus arctos

Julia Schregel, Jaanus Remm, Hans Geir Eiken, Jon E. Swenson, Urmas Saarma & Snorre B. Hagen
1. Large-scale pattern-oriented approaches are useful to understand the multi-level processes that shape the genetic structure of a population. Matching the scales of patterns and putative processes is both a key to success and a challenge. 2. We have developed a simple statistical approach, based on variogram analysis, that identifies multiple spatial scales where the population pattern, in this case genetic structure, have highest expression (i.e. the spatial scales at which the strength of patterning...

Data from: The bacterial community structure and functional profile in the heavy metal contaminated paddy soils,surrounding a nonferrous smelter in South Korea

Sherlyn C. Tipayno, Jaak Truu, Sandipan Samaddar, Marika Truu, Jens-Konrad Preem, Kristjan Oopkaup, Mikk Espenberg, Poulami Chatterjee, Yeongyeong Kang, Kiyoon Kim & Tongmin Sa
The pollution of agricultural soils by the heavy metals affects the productivity of the land and has an impact on the quality of the surrounding ecosystems. The present study investigated the bacterial community structure in the heavy metal contaminated sites along a smelter and a distantly located paddy field to elucidate the factors that are related to the alterations of the bacterial communities under the conditions of heavy metal pollution. Among the study sites, the...

Data from: Age-specific patterns of maternal investment in common gull egg yolk

Janek Urvik, Kalev Rattiste, Mathieu Giraudeau, Monika Okuliarova, Peeter Horak & Tuul Sepp
While the general patterns of age-specific changes in reproductive success are quite well established in long-lived animals, we still do not know if allocation patterns of maternally-transmitted compounds are related to maternal age. We measured yolk testosterone, carotenoids and vitamins A and E levels in a population of known-aged common gulls (Larus canus) and found an age-specific pattern in yolk lutein and vitamin A concentrations. Middle-aged mothers allocated more of these substances to yolk compared...

Data from: Partial genomic survival of cave bears in living brown bears

Axel Barlow, James A. Cahill, Stefanie Hartmann, Christoph Theunert, Georgios Xenikoudakis, Gloria G. Fortes, Johanna L. A. Paijmans, Gernot Rabeder, Christine Frischauf, Aurora Grandal-D'Anglade, Ana García-Vázquez, Marine Murtskhvaladze, Urmas Saarma, Peeter Anijalg, Tomaž Skrbinšek, Giorgio Bertorelle, Boris Gasparian, Guy Bar-Oz, Ron Pinhasi, Montgomery Slatkin, Love Dalén, Beth Shapiro & Michael Hofreiter
Although many large mammal species went extinct at the end of the Pleistocene epoch, their DNA may persist due to past episodes of interspecies admixture. However, direct empirical evidence of the persistence of ancient alleles remains scarce. Here, we present multifold coverage genomic data from four Late Pleistocene cave bears (Ursus spelaeus complex) and show that cave bears hybridized with brown bears (Ursus arctos) during the Pleistocene. We develop an approach to assess both the...

Data from: Body shape diversity in Triassic‒Early Cretaceous neopterygian fishes: sustained holostean disparity and predominantly gradual increases in teleost phenotypic variety

John T. Clarke & Matt Friedman
Comprising Holostei and Teleostei, the ~32,000 species of neopterygian fishes are anatomically disparate and represent the dominant group of aquatic vertebrates today. However, the pattern by which teleosts rose to represent almost all of this diversity, while their holostean sister group dwindled to 8 extant species and two broad morphologies, is poorly constrained. A geometric morphometric approach was taken to generate a morphospace from over 400 fossil taxa, representing almost all articulated neopterygian taxa known...

Data from: Predicting the cover and richness of intertidal macroalgae in remote areas: a case study in the Antarctic Peninsula

Jonne Kotta, Nelson Valdivia, Tiit Kutser, Kaire Toming, Merli Rätsep & Helen Orav-Kotta
1. Antarctica is an iconic region for scientific explorations as it is remote and a critical component of the global climate system. Recent climate change causes dramatic retreat of ice in Antarctica with associated impacts to its coastal ecosystem. These anthropogenic impacts have a potential to increase habitat availability for Antarctic intertidal assemblages. Assessing the extent and ecological consequences of these changes requires us to develop accurate biotic baselines and quantitative predictive tools. 2. In...

Registration Year

  • 2018
    13

Resource Types

  • Dataset
    13

Affiliations

  • University of Tartu
    13
  • Estonian University of Life Sciences
    3
  • University of Eastern Finland
    1
  • University of Michigan-Ann Arbor
    1
  • Royal Botanic Gardens
    1
  • University of Lausanne
    1
  • University of California, Berkeley
    1
  • VetAgro Sup
    1
  • University of Cincinnati
    1
  • Nederlands Instituut voor Ecologie
    1