29 Works

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...

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...

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...

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...

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).

Current climate overrides historical effects on species richness and range size of freshwater plants in Europe and North America

Janne Alahuhta, Harri Antikainen, Jan Hjort, Aveliina Helm & Jani Heino
1. The latitudinal diversity gradient (LDG) hypothesis suggests that species richness should be highest at low latitudes, whereas Rapoport’s rule states that largest ranges ought to be found for species at high latitudes. However, there is no consensus over these patterns and their underlying drivers in the freshwater realm. 2. We investigated species richness and mean range size of freshwater plants in 50 km × 50 km grid cells across Europe (40°N to 71°N) and...

The roles of temperature, nest predators and information parasites for geographical variation in egg covering behaviour of tits (Paridae)

Olli Loukola, Peter Adamik, Frank Adriaensen, Emilio Barba, Blandine Doligez, Einar Flensted-Jensen, Tapio Eeva, Sami Kivelä, Toni Laaksonen, Chiara Morosinotto, Raivo Mänd, Petri Niemelä, Vladimir Remeš, Jelmer Samplonius, Manrico Sebastiano, Juan Carlos Senar, Tore Slagsvold, Alberto Sorace, Barbara Tschirren, János Török & Jukka Forsman
Aim: Nest building is widespread among animals. Nests may provide receptacles for eggs, developing offspring and the parents, and protect them from adverse environmental conditions. Nests may also indicate the quality of the territory and its owner and can be considered as an extended phenotype of its builder(s). Nests may, thus, function as a sexual and social signal. Here, we examined ecological and abiotic factors—temperature, nest predation and interspecific information utilization—shaping geographical variation in a...

Information collected during the post-breeding season guides future breeding decisions in a migratory bird

Jere Tolvanen, Chiara Morosinotto, Jukka Forsman & Robert Thomson
Breeding habitat choice and investment decisions are key contributors to fitness in animals. Density of individuals is a well-known cue of habitat quality used for future breeding decisions, but accuracy of density cues decreases as individuals disperse from breeding sites. Used nests remain an available information source also after breeding season, but whether such information is used for breeding decisions is less well known. We experimentally investigated whether migratory, cavity-nesting pied flycatchers (Ficedula hypoleuca) prospect...

Comparative analysis of larval growth in Lepidoptera reveals instar-level constraints

Sami Kivelä, Robert Davis, Toomas Esperk, Karl Gotthard, Marko Mutanen, Daniel Valdma & Toomas Tammaru
1. Juvenile growth trajectories evolve via the interplay of selective pressures on age and size at maturity, and developmental constraints. In insects, the moulting cycle is a major constraint on larval growth trajectories. 2. Surface area to volume ratio of a larva decreases during growth, so renewal of certain surfaces by moulting is likely needed for the maintenance of physiological efficiency. A null hypothesis of isometry, implied by Dyar’s Rule, would mean that the relative...

Leave me alone: solitary females attract more mates in a nocturnal insect

Topi Lehtonen & Arja Kaitala
Spatial distributions of sexual competitors and potential mating partners have a large impact on sexual selection and mating systems. Typically, such effects are investigated with regard to male aggregations. However, females may also need to compete for mating opportunities. Here, we investigated consequences of clustering and rival attractiveness on female mate attraction success under field conditions in a nocturnal beetle, the common glow-worm, Lampyrus noctiluca. We placed dummy females of two glow intensity (attractiveness) levels...

Data from: Quantitative genetics of the use of conspecific and heterospecific social cues for breeding site choice

Jere Tolvanen, Sami Mikael Kivelä, Blandine Doligez, Jennifer Morinay, Lars Gustafsson, Piter Bijma, Veli-Matti Pakanen & Jukka T. Forsman
Social information use for decision-making is common and affects ecological and evolutionary processes, including social aggregation, species coexistence and cultural evolution. Despite increasing ecological knowledge on social information use, very little is known about its genetic basis and therefore its evolutionary potential. Genetic variation in a trait affecting an individual's social and non-social environment may have important implications for population dynamics, interspecific interactions and for expression of other, environmentally plastic traits. We estimated repeatability, additive...

Rapid colour shift by reproductive character displacement in Cupido butterflies

Joan Carles Hinojosa, Darina Koubínová, Vlad Dincă, Juan Hernández-Roldán, Miguel L. Munguira, Enrique García-Barros, Marta Vila, Nadir Alvarez, Marko Mutanen & Roger Vila
Reproductive character displacement occurs when competition for successful breeding imposes a divergent selection on the interacting species, causing a divergence of reproductive traits. Here, we show that a disputed butterfly taxon is actually a case of male wing colour shift, apparently produced by reproductive character displacement. Using double digest restriction-site associated DNA sequencing and mitochondrial DNA sequencing we studied four butterfly taxa of the subgenus Cupido (Lepidoptera: Lycaenidae): Cupido minimus and the taxon carswelli, both...

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...

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...

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...

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,...


Chris McCool, Sébastien Marcel, Abdenour Hadid, Matti Pietikainen, Pavel Matejka, Jan Cernocky, Norman Poh, Josef Kittler, Anthony Larcher, Lévy Christophe, Driss Matrouf, jean-francois Bonastre, Phil Tresadern & Timothy Cootes
MOBIO is a dataset for mobile face and speaker recognition. The dataset consists of bi-modal (audio and video) data taken from 152 people. The dataset has a female-male ratio of nearly 1:2 (100 males and 52 females) and was collected from August 2008 until July 2010 in six different sites from five different countries. This led to a diverse bi-modal dataset with both native and non-native English speakers.

A genome-wide linkage map for the house sparrow (Passer domesticus) provides insights into the evolutionary history of the avian genome

Ingerid Hagen, Sigbjørn Lien, Anna Billing, Tore O. Elgvin, Cassandra Trier, Alina K. Niskanen, Maja Tarka, Jon Slate, Glenn-Peter Sætre & Henrik Jensen
The house sparrow is an important model species for studying physiological, ecological and evolutionary processes in wild populations. Here, we present a medium density, genome wide linkage map for house sparrow (Passer domesticus) that has aided the assembly of the house sparrow reference genome, and that will provide an important resource for ongoing mapping of genes controlling important traits in the ecology and evolution of this species. Using a custom house sparrow 10K iSelect Illumina...

Data from: Effects of ambient temperatures on evolutionary potential of reproductive timing in boreal passerines

Emma Vatka, Markku Orell, Seppo Rytkönen & Juha Merilä
1. Many populations need to adapt to changing environmental conditions, such as warming climate. Changing conditions generate directional selection for traits critical for fitness. For evolutionary responses to occur, these traits need to be heritable. However, changes in environmental conditions can alter the amount of heritable variation a population expresses, making predictions about expected responses difficult. 2. The aim of this study was to evaluate the effects of ambient temperatures on evolutionary potential and strength...

Data from: Consistent scaling of inbreeding depression in space and time in a house sparrow metapopulation

Alina K. Niskanen, Anna M. Billing, Håkon Holand, Ingerid J. Hagen, Yimen G. Araya-Ajoy, Arild Husby, Bernt Rønning, Ane Marlene Myhre, Peter Sjolte Ranke, Thomas Kvalnes, Henrik Pärn, Thor Harald Ringsby, Sigbjørn Lien, Bernt-Erik Sæther, Stefanie Muff & Henrik Jensen
Inbreeding may increase the extinction risk of small populations. Yet, studies using modern genomic tools to investigate inbreeding depression in nature have been limited to single populations, and little is known about the dynamics of inbreeding depression in subdivided populations over time. Natural populations often experience different environmental conditions and differ in demographic history and genetic composition; characteristics that can affect the severity of inbreeding depression. We utilised extensive long-term data on more than 3100...

Data from: Latitudinal clines in the timing and temperature-sensitivity of photoperiodic reproductive diapause in Drosophila montana

Venera Tyukmaeva, Pekka Lankinen, Johanna Kinnunen, Hannele Kauranen & Anneli Hoikkala
Reproductive diapause is a primary mechanism used by arthropods to synchronize their life cycle with seasonal changes in temperate regions. Our study species, Drosophila montana, represents the northern insect species where flies enter reproductive diapause under short day conditions and where the precise timing of diapause is crucial for both survival and offspring production. We have studied clinal variation in the critical day length for female diapause induction (CDL) and their overall susceptibility to enter...

Survival probability in a small shorebird decreases with the time an individual carries a tracking device

Veli-Matti Pakanen, Nelli Rönkä, Robert L Thomson, Donald Blomqvist & Kari Koivula
Effects of tracking devices on survival are generally considered to be small. However, most studies to date have been conducted over a time-period of only one year, neglecting the possible accumulation of negative effects and consequently stronger negative impacts on survival when the individuals have carried the tracking devices for longer periods. We studied the effects of geolocators in a closely monitored and colour-ringed southern dunlin (Calidris alpina schinzii) population breeding in Finland. Our capture-recapture...

Data from: Resistance to gapeworm parasite has both additive and dominant genetic components in house sparrows, with evolutionary consequences for ability to respond to parasite challenge

Sarah Lundregan, Alina Niskanen, Stefanie Muff, Håkon Holand, Thomas Kvalnes, Thor-Harald Ringsby, Arild Husby & Henrik Jensen
Host parasite relationships are likely to change over the coming decades in response to climate change and increased anthropogenic stressors. Understanding the genetic architecture of parasite resistance will aid prediction of species’ responses to intensified parasite challenge. The gapeworm “Syngamus trachea” is prevalent in natural bird populations and causes symptomatic infections ranging from mild to severe. The parasite may affect ecological processes by curtailing bird populations and is important due to its propensity to spread...

Registration Year

  • 2020

Resource Types

  • Dataset
  • Other


  • University of Oulu
  • University of Helsinki
  • Finnish Environment Institute
  • Natural Resources Institute Finland
  • Swedish University of Agricultural Sciences
  • University of Tartu
  • Uppsala University
  • Norwegian Institute for Nature Research
  • Norwegian University of Science and Technology
  • University of Eastern Finland