112 Works

Data from: Divergence of Arctic shrub growth associated with sea ice decline

Agata Buchwal, Patrick F. Sullivan, Marc Macias-Fauria, Eric Post, Isla H. Myers-Smith, Julienne C. Stroeve, Daan Blok, Ken D. Tape, Bruce C. Forbes, Pascale Ropars, Esther Lévesque, Bo Elberling, Sandra Angers-Blondin, Joseph S. Boyle, Stéphane Boudreau, Noémie Boulanger-Lapointe, Cassandra Gamm, Martin Hallinger, Grzegorz Rachlewicz, Amanda Young, Pentti Zetterberg & Jeffrey M. Welker
Arctic sea ice extent (SIE) is declining at an accelerating rate with a wide range of ecological consequences. However, determining sea ice effects on tundra vegetation remains a challenge. In this study, we examined the universality or lack thereof in tundra shrub growth responses to changes in SIE and summer climate across the Pan-Arctic, taking advantage of 23 tundra shrub-ring chronologies from 19 widely distributed sites (56⁰-83⁰N).

Data from: Reproduction under light pollution: maladaptive response to spatial variation in artificial light in a glow-worm

Christina Elgert, Juhani Hopkins, Arja Kaitala & Ulrika Candolin
The amount of artificial light at night is growing worldwide, impacting the behaviour of nocturnal organisms. Yet, we know little about the consequences of these behavioural responses for individual fitness and population viability. We investigated if females of the common glow-worm Lampyris noctiluca – which glow in the night to attract males – mitigate negative effects of artificial light on mate attraction by adjusting the timing and location of glowing to spatial variation in light...

Stochastic processes and ecological connectivity drive stream invertebrate community responses to short-term drought

Romain Sarremejane, Amélie Truchy, Brendan McKie, Heikki Mykrä, Richard Johnson, Ari Huusko, Ryan Sponseller & Timo Muotka
1. Community responses to and recovery from disturbances depend on local (e.g. presence of refuges) and regional (connectivity to recolonization sources) factors. Droughts are becoming more frequent in boreal regions, and are likely to constitute a severe disturbance for boreal stream communities where organisms largely lack adaptations to such hydrological extremes. 2. We conducted an experiment in 24 seminatural stream flumes to assess the effects of local and regional factors on the responses of benthic...

Population genomics reveals repeated signals of adaptive divergence in the Atlantic salmon of northeastern Europe

Ksenia Zueva, Jaakko Lumme, Alexey Veselov, Craig Primmer & Victoria Pritchard
Our ability to examine genetic variation across entire genomes have enabled many studies searching for the genetic basis of local adaptation. These studies have identified numerous loci as candidates for differential local selection, however relatively few have examined the overlap among candidate loci identified from independent studies of the same species in different geographic areas or evolutionary lineages. We used an allelotyping approach with a 220K SNP array to characterize the population genetic structure of...

Estimating migration of the cold-tolerant leaf beetle Gonioctena quinquepunctata inside a mountain range in a spatially explicit context

Chedly Kastally, Simon Dellicour, Olivier J. Hardy, Marius Gilbert & Patrick Mardulyn
The cold-tolerant leaf beetle Gonioctena quinquepunctata displays a large but fragmented European distribution and is restricted to mountain regions in the southern part of its range. Using a RAD-seq-generated large SNP data set (> 10,000 loci), we investigated the geographic distribution of genetic variation within the Vosges mountains, where the species is common. To translate this pattern of variation in an estimate of its capacity to disperse, we simulated SNP data under a spatially explicit...

Data from: Selection for population specific adaptation has shaped patterns of variation in the photoperiod pathway genes in Arabidopsis lyrata during post glacial colonization

Tiina M. Mattila, Esa A. Aalto, Tuomas Toivainen, Anne Niittyvuopio, Susanna Piltonen, Helmi Kuittinen & Outi Savolainen
Spatially varying selection can lead to population-specific adaptation, which is often recognized at the phenotypic level; however, the genetic evidence is weaker in many groups of organisms. In plants, environmental shifts that occur due to colonization of a novel environment may require adaptive changes in the timing of growth and flowering, which are often governed by location-specific environmental cues such as day length. We studied locally varying selection in 19 flowering time loci in nine...

Data from: Statistical forecasting of current and future circum-Arctic ground temperatures and active layer thickness

Juha Aalto, Olli Karjalainen, Jan Hjort & Miska Luoto
Mean annual ground temperature (MAGT) and active layer thickness (ALT) are key to understanding the evolution of the ground thermal state across the Arctic under climate change. Here a statistical modeling approach is presented to forecast current and future circum-Arctic MAGT and ALT in relation to climatic and local environmental factors, at spatial scales unreachable with contemporary transient modeling. After deploying an ensemble of multiple statistical techniques, distance-blocked cross-validation between observations and predictions suggested excellent...

Data from: A recent local sweep at the PHYA locus in the Northern European Spiterstulen population of Arabidopsis lyrata

Tuomas Toivainen, Tanja Pyhäjärvi, Anne Niittyvuopio & Outi Savolainen
Northern and central European Arabidopsis lyrata ssp. petraea populations are locally adapted to prevailing climatic conditions through differences in timing of life history events. The timing of flowering, and in perennials, the timing of growth cessation influence fitness. Phytochrome A may have an important role in regulating these life-history traits as it perceives changes in daylength. We asked, whether PHYA has contributed to local adaptation to the northern conditions in A. l. petraea. To search...

Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation

Heikki Helanterä, Jonna Kulmuni & Pekka Pamilo
Sex allocation theory predicts parents should adjust their investment in male and female offspring in a way that increases parental fitness. This has been shown in several species and selective contexts. Yet, seasonal sex ratio variation within species and its underlying causes are poorly understood. Here we study sex allocation variation in the wood ant Formica pratensis. This species displays conflict over colony sex ratio as workers and queens prefer different investment in male and...

Data from: Demographic histories and genetic diversities of Fennoscandian marine and landlocked ringed seal subspecies

Tommi Nyman, Mia Valtonen, Jouni Aspi, Minna Ruokonen, Mervi Kunnasranta & Jukka U. Palo
Island populations are on average smaller, genetically less diverse, and at a higher risk to go extinct than mainland populations. Low genetic diversity may elevate extinction probability, but the genetic component of the risk can be affected by the mode of diversity loss, which, in turn, is connected to the demographic history of the population. Here, we examined the history of genetic erosion in three Fennoscandian ringed seal subspecies, of which one inhabits the Baltic...

Data from: No biotic homogenisation across decades but consistent effects of landscape position and pH on macrophyte communities in boreal lakes

Marja Lindholm, Janne Alahuhta, Jani Heino & Heikki Toivonen
It has been predicted that spatial beta diversity shows a decreasing trend in the Anthropocene due to increasing human impact, causing biotic homogenisation. We aimed to discover if vascular aquatic macrophyte communities show different spatial patterns in beta diversity in relation to land use and environmental characteristics in different decades from 1940s to 2010s. We aimed to discover if spatial structures differ between species-, phylogeny- and functional-based beta diversity. We used presence-absence data of aquatic...

An ancient and eroded social supergene is widespread across Formica ants

Alan Brelsford, Jessica Purcell, Amaury Avril, Patrick Tran Van, Junxia Zhang, Timothée Brütsch, Liselotte Sundström, Heikki Helanterä & Michel Chapuisat
Supergenes, clusters of tightly linked genes, play a key role in the evolution of complex adaptive variation. While supergenes have been identified in many species, we lack an understanding of their origin, evolution and persistence. Here, we uncover 20-40 MY of evolutionary history of a supergene associated with polymorphic social organization in Formica ants. We show that five Formica species exhibit homologous divergent haplotypes spanning 11 Mbp on chromosome 3. Despite the size of the...

Data from: Short- and mid-wavelength artificial light influences the flash signals of Aquatica ficta fireflies (Coleoptera: Lampyridae)

Avalon C.S. Owens, Victor B. Meyer-Rochow, En-Cheng Yang & Avalon Celeste Stevahn Owens
Urbanization can radically disrupt natural ecosystems through alteration of the sensory environment. Habitat disturbances are predicted to favor behaviorally flexible species capable of adapting to altered environments. When artificial light at night (ALAN) is introduced into urban areas, it has the potential to impede reproduction of local firefly populations by obscuring their bioluminescent courtship signals. Whether individual fireflies can brighten their signals to maintain visibility against an illuminated background remains unknown. In this study, we...

Data from: Cuckoo parasitism in a cavity nesting host: near absent egg-rejection in a northern redstart population under heavy apparent (but low effective) brood parasitism

Robert L. Thomson, Jere Tolvanen & Jukka T. Forsman
Brood parasite - host systems continue to offer insights into species coevolution. A notable system is the redstart Phoenicurus phoenicurus parasitized by the “redstart-cuckoo” Cuculus canorus gens. Redstarts are the only regular cuckoo hosts that breed in cavities, which challenges adult cuckoos in egg laying and cuckoo chicks in host eviction. We investigated parasitism in this system and found high overall parasitism rates (31.1% of 360 redstart nests), but also that only 33.1% of parasitism...

Data from: Genome-wide meta-analysis of sciatica in Finnish population

Susanna Lemmelä, Svetlana Solovieva, Rahman Shiri, Christian Benner, Markku Heliövaara, Johannes Kettunen, Verneri Anttila, Samuli Ripatti, Markus Perola, Ilkka Seppälä, Markus Juonala, Mika Kähönen, Veikko Salomaa, Jorma Viikari, Olli Raitakari, Terho Lehtimäki, Aarno Palotie, Eira Viikari-Juntula, Kirsti Husgafvel-Pursiainen, Olli T. Raitakari & Eira Viikari-Juntura
Sciatica or the sciatic syndrome is a common and often disabling low back disorder in the working-age population. It has a relatively high heritability but poorly understood molecular mechanisms. The Finnish population is a genetic isolate where small founder population and bottleneck events have led to enrichment of certain rare and low frequency variants. We performed here the first genome-wide association (GWAS) and meta-analysis of sciatica. The meta-analysis was conducted across two GWAS covering 291...

Data from: Bayesian adaptive Markov Chain Monte Carlo estimation of genetic parameters

Boby Mathew, Andrea M. Bauer, Petri Koistinen, Tobias C. Reetz, Jens Léon & Mikko J. Sillanpää
Accurate and fast estimation of genetic parameters that underlie quantitative traits using mixed linear models with additive and dominance effects is of great importance in both natural and breeding populations. Here we propose a new fast adaptive Markov Chain Monte Carlo (MCMC) sampling algorithm for the estimation of genetic parameters in the linear mixed model with several random effects. In the learning phase of our algorithm, we use the hybrid Gibbs sampler to learn the...

Using genomic information for management planning of an endangered perennial, Viola uliginosa

Kyung Min Lee, Pertti Ranta, Jarmo Saarikivi, Lado Kutnar, Branko Vreš, Maxim Dzhus, Marko Mutanen & Laura Kvist
Species occupying habitats subjected to frequent natural and/or anthropogenic changes are a challenge for conservation management. We studied one such species, Viola uliginosa, an endangered perennial wetland species typically inhabiting sporadically flooded meadows alongside rivers/lakes. In order to estimate genomic diversity, population structure and history, we sampled five sites in Finland, three in Estonia, and one each in Slovenia, Belarus, and Poland using genomic SNP data with double-digest restriction site associated DNA sequencing (ddRAD-seq). We...

Dynamics of a host-parasitoid interaction clarified by modelling and DNA sequencing

Marko Mutanen, Otso Ovaskainen, Gergely Várkonyi, Juhani Itämies, Sean W. J. Prosser, Paul D. N. Hebert & Ilkka Hanski
It has been hypothesized that the 2-year oscillations in abundance of Xestia moths are mediated by interactions with 1-year Ophion parasitoid wasps. We tested this hypothesis by modelling a 35-year time series of Xestia and Ophion from northern Finland. Additionally, we used DNA barcoding to ascertain the species diversity of Ophion and targeted amplicon sequencing of their gut contents to confirm their larval hosts. Modelling of the time-series data strongly supported the hypothesized host–parasitoid dynamics...

Genotype data from: Restoration of transborder connectivity for Fennoscandian brown bears (Ursus arctos)

Alexander Kopatz, Kleven Oddmund, Kojola Ilpo, Aspi Jouni, Anita J. Norman, Göran Spong, Niclas Gyllenstrand, Love Dalén, Ida Fløystad, Snorre B. Hagen, Jonas Kindberg & Øystein Flagstad
Knowledge about the connectivity among natural populations is essential to identify management units for effective conservation actions. Conservation-minded management has led to the recovery of large carnivore populations in northern Europe, possibly restoring connectivity between the two separated, but expanding brown bear (Ursus arctos) populations on the Scandinavian peninsula to the west and Karelia, a part of the large Eurasian population, to the east. The degree of connectivity between these populations has been poorly understood,...

Data from: Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle

Mari S. Lyly, Alexandre Villers, Elina Koivisto, Pekka Helle, Tuomo Ollila & Erkki Korpimäki
Top predators may induce extensive cascading effects on lower trophic levels, for example, through intraguild predation (IGP). The impacts of both mammalian and avian top predators on species of the same class have been extensively studied, but the effects of the latter upon mammalian mesopredators are not yet as well known. We examined the impact of the predation risk imposed by a large avian predator, the golden eagle (Aquila chrysaetos, L.), on its potential mammalian...

Data from: Genetic heterogeneity underlying variation in a locally adaptive clinal trait in Pinus sylvestris revealed by a Bayesian multipopulation analysis

Sonja T. Kujala, Timo Knürr, Katri Kärkkäinen, David B. Neale, Mikko J. Sillanpää & Outi Savolainen
Local adaptation is a common feature of plant and animal populations. Adaptive phenotypic traits are genetically differentiated along environmental gradients, but the genetic basis of such adaptation is still poorly known. Genetic association studies of local adaptation combine data over populations. Correcting for population structure in these studies can be problematic since both selection and neutral demographic events can create similar allele frequency differences between populations. Correcting for demography with traditional methods may lead to...

Data from: Proxy comparison in ancient peat sediments: pollen, macrofossil and plant DNA

Laura Parducci, Minna Väliranta, J. Sakari Salonen, Tiina Ronkainen, Irina Matetovici, Sonia L. Fontana, Tiina Eskola, Pertti Sarala & Yoshihisa Suyama
We compared DNA, pollen and macrofossil data obtained from Weichselian interstadial and Holocene (maximum age 8400 cal yr BP) peat sediments from northern Europe and used them to reconstruct contemporary floristic compositions at two sites. The majority of the samples provided plant DNA sequences of good quality with success amplification rates depending on age. DNA and sequencing analysis provided five plant taxa from the older site and nine taxa from the younger site, corresponding to...

Data from: Combined effects of local habitat, anthropogenic stress, and dispersal on stream ecosystems: a mesocosm experiment

Jarno Turunen, Pauliina Louhi, Heikki Mykrä, Jukka Aroviita, Emmi Putkonen, Ari Huusko & Timo Muotka
The effects of anthropogenic stressors on community structure and ecosystem functioning can be strongly influenced by local habitat structure and dispersal from source communities. Catchment land uses increase the input of fine sediments into stream channels, clogging the interstitial spaces of benthic habitats. Aquatic macrophytes enhance habitat heterogeneity and mediate important ecosystem functions, being thus a key component of habitat structure in many streams. Therefore, the recovery of macrophytes following in-stream habitat modification may be...

Data from: Testing macroecological abundance patterns: the relationship between local abundance and range size, range position and climatic suitability among European vascular plants

Maria Sporbert, Petr Keil, Gunnar Seidler, Helge Bruelheide, Ute Jandt, Svetlana Aćić, Idoia Biurrun, Juan Antonio Campos, Andraž Čarni, Milan Chytrý, Renata Custerevska, Jürgen Dengler, Valentin Golub, Florian Jansen, Anna Kuzemko, Jonathan Lenoir, Corrado Marcenò, Jesper Erenskjold Moeslund, Aaron Pérez-Haase, Solvita Rūsiņa, Urban Šilc, Ioannis Tsiripidis, Vigdis Vandvik, Kiril Vassilev, Risto Virtanen … & Erik Welk
Aim: A fundamental question in macroecology centres around understanding the relationship between species’ local abundance and their distribution in geographic and climatic space (i.e. the multi-dimensional climatic space or climatic niche). Here, we tested three macroecological hypotheses that link local abundance to the following range properties: (1) the abundance-range size relationship, (2) the abundance-range centre relationship, and (3) the abundance-suitability relationship. Location: Europe Taxon: Vascular plants Methods: Distribution range maps were extracted from the Chorological...

Genetic divergence, admixture and subspecific boundaries in a peripheral population of great tit, Parus major (Aves, Paridae)

Sahar Javaheri Tehrani, Laura Kvist, Omid Mirshamsi, Seyed Mahmoud Ghasempouri & Mansour Aliabadian
Secondary contact zones have been formed between several pairs of avian species and subspecies in northern and northeastern Iran during the post-Pleistocene and Holocene times. Three subspecies groups out of the four in the great tit (Parus major), namely, major, bokharensis and cinereus are supposed to have come into local or regional secondary contact in northeastern Iran. Parus major intermedius known from this region, has long been suggested to have a hybrid origin, stemming from...

Registration Year

  • 2021
    11
  • 2020
    29
  • 2019
    6
  • 2018
    13
  • 2017
    12
  • 2016
    9
  • 2015
    11
  • 2014
    12
  • 2013
    2
  • 2012
    5

Resource Types

  • Dataset
    111
  • Other
    1

Affiliations

  • University of Oulu
    112
  • University of Helsinki
    26
  • Finnish Environment Institute
    16
  • University of Turku
    13
  • Natural Resources Institute Finland
    11
  • University of Eastern Finland
    8
  • University of Tartu
    6
  • Norwegian University of Science and Technology
    6
  • Swedish University of Agricultural Sciences
    5
  • Uppsala University
    5