19 Works

Recent changes in mountain birch forest structure and understory vegetation depend on the seasonal timing of reindeer grazing

Sari Stark, Henni Ylänne & Jouko Kumpula
1. Subarctic forest-tundra ecotones dominated by mountain birch (Betula pubescens ssp. czerepanovii) is an important habitat for semi-domestic reindeer (Rangifer tarandus). The seasonal timing of reindeer grazing may direct vegetation trajectories in these systems, because in the summer ranges, mountain birches are subjected to browsing, while in the winter ranges, reindeer feed on understorey vegetation and arboreal lichens but leave the mountain birches intact. 2. Based on earlier research, we predicted that (1) summer browsing...

Urbanization extends flight phenology and leads to local adaptation of seasonal plasticity in Lepidoptera

Thomas Merckx, Matthew Nielsen, Janne Heliölä, Mikko Kuussaari, Lars Pettersson, Juha Pöyry, Juha Tiainen, Karl Gotthard & Sami Kivelä
Urbanization is globally gaining force and challenges biodiversity but has recently also emerged as an agent of evolutionary change. Seasonal phenology and life-cycle regulation are essential processes that urbanization is likely to alter through both the urban-heat-island effect (UHI) and artificial-light-at-night (ALAN). However, how UHI and ALAN affect the evolution of seasonal adaptations has received little attention. Here, we test for urban evolution of seasonal life-history plasticity, specifically changes in the photoperiodic induction of diapause...

Data from: Reliable wolf-dog hybrid detection in Europe using a reduced SNP panel developed for non-invasively collected samples

Jenni Harmoinen, Alina Von Thaden, Jouni Aspi, Laura Kvist, Berardino Cocchiararo, Anne Jarausch, Andrea Gazzola, Teodora Sin, Hannes Lohi, Marjo Hytönen, Ilpo Kojola, Astrid Vik Stronen, Romolo Caniglia, Federica Mattucci, Marco Galaverni, Raquel Godinho, Aritz Ruiz-González, Ettore Randi, Violeta Muñoz-Fuentes & Carsten Nowak
Background: Understanding the processes that lead to hybridization of wolves and dogs is of scientific and management importance, particularly over large geographical scales, as wolves can disperse great distances. However, a method to efficiently detect hybrids in routine wolf monitoring is lacking. Microsatellites offer only limited resolution due to the low number of markers showing distinctive allele frequencies between wolves and dogs. Moreover, calibration across laboratories is time-consuming and costly. In this study, we selected...

Short-Tandem-Repeat (STR) marker set for Eurasian lynx for article: Genetic analysis indicates spatial-dependent patterns of sex-biased dispersal in Eurasian lynx in Finland

Annika Herrero, Cornelya Klutsch, Katja Holmala, Simo Maduna, Alexander Kopatz, Hans Geir Eiken & Snorre Hagen
Conservation and management of large carnivores requires knowledge of female and male dispersal. Such information is crucial to evaluate the population’s status and thus management actions. This knowledge is challenging to obtain, often incomplete and contradictory at times. The size of the target population and the methods applied can bias the results. Also, population history and biological or environmental influences can affect dispersal on different scales within a study area. We have genotyped Eurasian lynx...

Identifying biotic drivers of population dynamics in a benthic–pelagic community

Louise Forsblom, Andreas Lindén, Jonna Engström-Öst, Maiju Lehtiniemi & Erik Bonsdorff
Benthic species and communities are linked to pelagic zooplankton through life-stages encompassing both benthic and pelagic habitats and through a mutual dependency on primary producers as a food source. Many zooplankton taxa contribute to the sedimentary system as benthic eggs. Our main aim was to investigate the nature of the population level biotic interactions between and within these two seemingly independent communities, both dependent on the pelagic primary production, while simultaneously accounting for environmental drivers...

Environmental variables and occurrence of 13 fish species

Tapio Sutela, Teppo Vehanen, Pekka Jounela & Jukka Aroviita
Species-environment relationships were studied between the occurrence of 13 fish and lamprey species and 9 mainly map-based environmental variables of Finnish boreal small streams. A self-organizing map (SOM) analysis showed strong relationships between the fish species and environmental variables in a single model (explained variance 55.9%). Besides basic environmental variables such as altitude, catchment size, and mean temperature, landcover variables were also explored. A logistic regression analysis indicated that the occurrence probability of brown trout,...

Patterns of genetic diversity vary among shoot and root functional traits in Norway spruce (Picea abies) along a latitudinal gradient

Matti J. Salmela
Roots constitute a major segment of plant biomass, and variation in belowground traits in situ correlates with environmental gradients at large spatial scales. Local adaptation of populations maintains intraspecific genetic variation in various shoot traits, but the contribution of genetic factors to adaptation to soil heterogeneity remains poorly known. I established a common-garden experiment with three Norway spruce (Picea abies) populations sampled between 60° and 67° N in Finland, each represented by 13 or 15...

Genetics of mercury accumulation in Stickleback, genotypes and metal accumulation phenotypes

Federico Calboli & Vyshal Delahaut
Anthropogenic stressors, such as pollutants, act as selective factors that can leave measurable changes in allele frequencies in the genome. Metals are of particular concern among pollutants, because of interference with vital biological pathways. We use the three-spined stickleback as a model for adaptation to mercury pollution in natural populations. We collected sticklebacks from 21 locations in Flanders (Belgium), measured the accumulated levels of mercury in the skeletal muscle tissue, and genotyped the fish by...

Data from: Traits mediate niches and co-occurrences of forest beetles in ways that differ among bioclimatic regions

Ryan C. Burner, Jörg G. Stephan, Lukas Drag, Tone Birkemoe, Jörg Muller, Tord Snäll, Otso Ovaskainen, Mária Potterf, Juha Siitonen, Olav Skarpaas, Inken Doerfler, Martin M. Gossner, Peter Schall, Wolfgang W. Weisser & Anne Sverdrup-Thygeson
Aim To investigate the role of traits in beetle community assembly and test for consistency in these effects among several bioclimatic regions. We asked (1) whether traits predicted species’ responses to environmental gradients (i.e., their niches), (2) whether these same traits could predict co-occurrence patterns, and (3) how consistent were niches and the role of traits among study regions. Location Boreal forests in Norway and Finland, temperate forests in Germany. Methods We complied capture records...

Data from: Strong interactive effects of warming and insect herbivory on soil carbon and nitrogen dynamics at Subarctic tree line

Nele Meyer, Tarja Silfver, Kristiina Karhu, Kristiina Myller, Outi-Maaria Sietiö, Eero Myrsky, Elina Oksanen, Matti Rousi & Juha Mikola
Warming will likely stimulate Arctic primary production, but also soil C and N mineralization, and it remains uncertain whether the Arctic will become a sink or a source for CO2. Increasing insect herbivory may also dampen the positive response of plant production and soil C input to warming. We conducted an open-air warming experiment with Subarctic field layer vegetation in North Finland to explore the effects of warming (+3°C) and reduced insect herbivory (67% reduction...

Urban forests host rich polypore assemblages in a Nordic metropolitan area

Aku Korhonen, Reijo Penttilä, Auli Immonen, Otto Miettinen, Juha Siitonen & Leena Hamberg
This dataset contains data for a manuscript titled 'Urban forests host rich polypore assemblages in a Nordic metropolitan area' where we have studied associations between the diversity of dead-wood inhabiting fungi and urbanization. The included spreadsheets contain data used in the analyses, i.e. polypore species occurrences, species richness and environmental data, accompanied by annotations about the characteristics of the study sites and individual dead-wood units. Data is given at two spatial scales on two separate...

Seasonal release from competition explains partial migration in European moose

Bram Van Moorter, Navinder Singh, Christer Rolandsen, Erling Solberg, Holger Dettki, Jyrki Pusenius, Johan Månsson, Hakan Sand, Jos Milner, Ole Roer, Aimee Tallian, Wiebke Neumann, Göran Ericsson & Atle Mysterud
Partial migration, whereby a proportion of a population migrates between distinct seasonal ranges, is common throughout the animal kingdom. However, studies linking existing theoretical models of migration probability, with empirical data are lacking. The competitive release hypothesis for partial migration predicts that due to density-dependent habitat selection, the proportion of migrants increases as the relative quality and size of the seasonal range increases, but decreases with increasing migration cost and population density. To test this...

Data from: Genotypic traits and tradeoffs of fast growth in silver birch, a pioneer tree

Juha Mikola, Katariina Koikkalainen, Mira Rasehorn, Tarja Silfver, Ulla Paaso & Matti Rousi
Fast-growing and slow-growing plant species are suggested to show integrated economics spectrums and the tradeoffs of fast growth are predicted to emerge as susceptibility to herbivory and resource competition. We tested if these predictions also hold for fast-growing and slow-growing genotypes within a silver birch, Betula pendula population. We exposed cloned saplings of 17 genotypes with slow, medium or fast height growth to reduced insect herbivory, using an insecticide, and to increasing resource competition, using...

Data on measuring splash dispersal of a major wheat pathogen in the field

Petteri Karisto, Frédéric Suffert & Alexey Mikaberidze
Capacity for dispersal is a fundamental fitness component of plant pathogens. Characterization of plant pathogen dispersal is important for understanding how pathogen populations change in time and space. We devised a systematic approach to measure and analyze rain splash-driven dispersal of plant pathogens in field conditions, using the major fungal wheat pathogen Zymoseptoria tritici as a case study.We inoculated field plots of wheat (Triticum aestivum) with two distinct Z. tritici strains. Next, we measured disease...

Morphological trait database of saproxylic beetles

Jonas Hagge, Jörg Müller, Tone Birkemoe, Jörn Buse, Rune Haubo Bojesen Christensen, Martin M. Gossner, Axel Gruppe, Christoph Heibl, Andrea Jarzabek-Müller, Sebastian Seibold, Juha Siitonen, João Gonçalo Soutinho, Anne Sverdrup-Thygeson, Simon Thorn & Lukas Drag
The extinction of species is a non-random process, and understanding why some species are more likely to go extinct than others is critical for conservation efforts. Functional trait-based approaches offer a promising tool to achieve this goal. In forests, deadwood-dependent (saproxylic) beetles comprise a major part of threatened species, but analyses of their extinction risk have been hindered by the availability of suitable morphological traits. To better understand the mechanisms underlying extinction in insects, we...

Microsatellite variation in Nordic semi-domestic reindeer

Knut Røed, Kjersti Kvie, Bård-Jørgen Bårdsen, Sauli Laaksonen, Hannes Lohi, Juoko Kumpula, Kjell-Åke Aronsson, Birgitta Åhman, Jørn Våge & Øystein Holand
We have analyzed DNA microsatellites and the mitochondrial control region in reindeer from 31 different husbandry areas in Norway, Sweden and Finland in order to better understand the processes that underlie the genetic variability of the Nordic domestic herds. The distinct differentiation found in the nuclear markers but less so in the mitochondrial marker, gives evidence of an origin from a common ancestral population which later evolved into the two main gene pools characterizing the...

Rumen bacteria, archaea and ciliate protozoa data from animal trial with Nordic Red dairy cows

Ilma Tapio
Four multiparous dairy cows fitted with rumen cannula were used in a 4 × 4 Latin square with 2 × 2 factorial arrangement of treatments to examine how starch level and oil mixture impact dry matter (DM) intake and digestibility, milk yield and composition, rumen fermentation, ruminal methane (CH4) emissions, and microbial diversity. Experimental treatments were comprised of high (HS) or low (LS) levels of starch containing 0 or 30 g of a mixture of...

Wild reindeer, wolf and moose population dynamics in Eastern Finland

Ilpo Kojola
Background. The alternative prey hypothesis describes the mechanism for apparent competition whereby the mortality of the secondary prey species increases (and population size decreases) by the increased predation by the shared predator if the population size of the primary prey decreases. Apparent competition is a process where the abundance of two co-existing prey species are negatively associated because they share a mutual predator, which negatively affects the abundance of both prey. Here, we examined whether...

Data belonging to the article: Estimating pre-harvest density, adult sex ratio and fecundity of white-tailed deer using wildlife cameras

Jon Brommer, Jenni Poutanen, Jyrki Pusenius & Mikael Wikström
Adult sex ratio and fecundity (juveniles per female) are key population parameters in sustainable wildlife management, but inferring these requires abundance estimates of at least three age/sex classes of the population (male and female adults and juveniles). Prior to harvest, we used an array of 36 wildlife camera traps during 2 and 3 weeks in the early autumn of 2016 and 2017 respectively. We recorded white-tailed deer adult males, adult females and fawns from the...

Registration Year

  • 2021

Resource Types

  • Dataset


  • Natural Resources Institute Finland
  • University of Helsinki
  • Finnish Environment Institute
  • Swedish University of Agricultural Sciences
  • Norwegian University of Life Sciences
  • Norwegian Institute for Nature Research
  • University of Würzburg
  • Lund University
  • University of Oslo
  • University of Göttingen