40 Works

Data from: Secondary successional trajectories of structural and catabolic bacterial communities in oil polluted soil planted with hybrid poplar

Shinjini Mukherjee, Timo Sipilä, Pertti Pulkkinen & Kim Yrjälä
Poplars have widely been used for rhizoremediation of a broad range of organic contaminants for the past two decades. Still, there is a knowledge gap regarding the rhizosphere associated bacterial communities of poplars and their dynamics during the remediation process. It is envisaged that a detailed understanding of rhizosphere associated microbial populations will greatly contribute to a better design and implementation of rhizoremediation. In order to investigate the long-term succession of structural and catabolic bacterial...

Data from: Predator–vole interactions in northern Europe: the role of small mustelids revised

Katri Korpela, Pekka Helle, Heikki Henttonen, Erkki Korpimäki, Esa Koskela, Otso Ovaskainen, Hannu Pietiäinen, Janne Sundell, Jari Valkama, Otso Huitu, K. Korpela, E. Koskela, O. Ovaskainen, H. Pietiainen, J. Sundell, J. Valkama, E. Korpimaki, H. Henttonen & O. Huitu
The cyclic population dynamics of vole and predator communities is a key phenomenon in northern ecosystems, and it appears to be influenced by climate change. Reports of collapsing rodent cycles have attributed the changes to warmer winters, which weaken the interaction between voles and their specialist subnivean predators. Using population data collected throughout Finland during 1986–2011, we analyse the spatio-temporal variation in the interactions between populations of voles and specialist, generalist and avian predators, and...

Data from: Functional response of plant communities to clearcutting: management impacts differ between forest vegetation zones

Buntarou Kusumoto, Takayuki Shiono, Mai Miyoshi, Ryo Maeshiro, Shin-Jiro Fujii, Timo Kuuluvainen & Yasuhiro Kubota
1. Understanding of the ecological impacts of logging practices on biodiversity and associated ecosystem processes is essential for developing sustainable forest management approaches. We documented the impacts of clearcutting on the functional structure of tree and herbaceous communities in hemiboreal, cool-temperate, warm-temperate and subtropical forests in the Japanese archipelago and identified forest vegetation that is vulnerable to deterioration of important ecosystem functions. 2. We combined species data for leaf, stem, flower and fruit traits related...

Data from: Cryptic ecology among host generalist Campylobacter jejuni in domestic animals

Samuel K. Sheppard, Lu Cheng, Guillaume Méric, Caroline P. A. De Haan, Ann-Katrin Llarena, Pekka Marttinen, Ana Vidal, Anne Ridley, Felicity Clifton-Hadley, Thomas R. Connor, Norval J. C. Strachan, Ken Forbes, Frances M. Colles, Keith A. Jolley, Stephen D. Bentley, Martin C. J. Maiden, Marja-Liisa Hänninen, Julian Parkhill, William P. Hanage & Jukka Corander
Homologous recombination between bacterial strains is theoretically capable of preventing the separation of daughter clusters, and producing cohesive clouds of genotypes in sequence space. However, numerous barriers to recombination are known. Barriers may be essential such as adaptive incompatibility, or ecological, which is associated with the opportunities for recombination in the natural habitat. Campylobacter jejuni is a gut colonizer of numerous animal species and a major human enteric pathogen. We demonstrate that the two major...

Data from: Are ant supercolonies crucibles of a new major transition in evolution?

Patrick Kennedy, Tobias Uller & Heikki Helanterä
The biological hierarchy of genes, cells, organisms and societies is a fundamental reality in the living world. This hierarchy of entities did not arise ex nihilo at the origin of life, but rather has been serially generated by a succession of critical events known as ‘evolutionary transitions in individuality’ (ETIs). Given the sequential nature of ETIs, it is natural to look for candidates to form the next hierarchical tier. We analyse claims that these candidates...

Data from: Disentangling plastic and genetic changes in body mass of Siberian jays

Phillip Gienapp & Juha Merilä
Spatial and temporal phenotypic differentiation in mean body size is of commonplace occurrence, but the underlying causes remain often unclear: both genetic differentiation in response to selection (or drift) and environmentally induced plasticity can create similar phenotypic patterns. Studying changes in body mass in Siberian jays (Perisoreus infaustus) over three decades, we discovered that mean body mass declined drastically (ca. 10%) over the first two decades, but increased markedly thereafter back to almost the initial...

Data from: Impact of diet and individual variation on intestinal microbiota composition and fermentation products in obese men

Anne Salonen, Leo Lahti, Jarkko Salojärvi, Grietje Holtrop, Katri Korpela, Sylvia H. Duncan, Priya Date, Freda Farquharson, Alexandra M. Johnstone, Gerald E. Lobley, Petra Louis, Harry J. Flint & Willem M. De Vos
There is growing interest in understanding how diet affects the intestinal microbiota, including its possible associations with systemic diseases such as metabolic syndrome. Here we report a comprehensive and deep microbiota analysis of fourteen obese males consuming fully controlled diets supplemented with resistant starch (RS) or non-starch polysaccharides (NSP), and a weight-loss diet (WL). We analyzed the composition, diversity and dynamics of the faecal microbiota on each dietary regime by phylogenetic microarray and quantitative PCR...

Data from: Causes and consequences of fine-scale population structure in a critically endangered freshwater seal

Mia Valtonen, Jukka U. Palo, Jouni Aspi, Minna Ruokonen, Mervi Kunnasranta & Tommi Nyman
Saimaa_ringed_seal_microsatSaimaa ringed seal genotypes based on 17 microsatellite loci. Individuals sampled between the years 1980-2008 from five regions of Lake Saimaa; Northern Saimaa (1st pop), Kolovesi (2nd pop), Main Haukivesi area (3rd pop), Pihlajavesi area (4th pop) and Southern Saimaa (5th pop). The data is in GenePop format.Saimaa_ringed_seal_sample_infoCollection information on the individual Saimaa ringed seals included in the study.

Data from: Outbreeding effects in an inbreeding insect, Cimex lectularius

Toby Fountain, Roger K. Butlin, Klaus Reinhardt & Oliver Otti
In some species, populations with few founding individuals can be resilient to extreme inbreeding. Inbreeding seems to be the norm in the common bed bug, Cimex lectularius, a flightless insect that, nevertheless, can reach large deme sizes and persist successfully. However, bed bugs can also be dispersed passively by humans, exposing inbred populations to gene flow from genetically distant populations. The introduction of genetic variation through this outbreeding could lead to increased fitness (heterosis) or...

Data from: Human-facilitated metapopulation dynamics in an emerging pest species, Cimex lectularius

Toby Fountain, Gavin Horsburgh, Ludovic Duvaux, Klaus Reinhardt & Roger K. Butlin
The number and demographic history of colonists can have dramatic consequences for the way in which genetic diversity is distributed and maintained in a metapopulation. The bed bug (Cimex lectularius) is a re-emerging pest species whose close association with humans has led to frequent local extinction and colonisation, i.e. to metapopulation dynamics. Pest control limits the lifespan of sub-populations, causing frequent local extinctions, and human-facilitated dispersal allows the colonisation of empty patches. Founder events often...

Data from: Consensus RDA across dissimilarity coefficients for canonical ordination of community composition data

F. Guillaume Blanchet, Pierre Legendre, J. A. Colin Bergeron & Fangliang He
Understanding how habitat structures species assemblages in a community is one of the main goals of community ecology. To relate community patterns to particular factors defining habitat conditions, ecologists often use canonical ordinations such as canonical redundancy analysis (RDA). It is a common practice to use dissimilarity coefficients to perform canonical ordinations through distance-based RDA (db-RDA) or transformation-based RDA (tb-RDA). Dissimilarity coefficients are measures of resemblance where the information about species communities is condensed into...

Data from: Competitive release leads to range expansion and rampant speciation in Malagasy dung beetles

Andreia Miraldo, Ilkka Hanski & Ilkka A. Hanski
Competition is often thought to promote ecological diversification and thereby to facilitate the coexistence of competitors during evolutionary radiations. At large spatial scales, species may also coexist by having allopatric distributions, which raises the question about the role of range expansion in the proliferation of species during radiations. Here, we integrate a well-sampled (50 out of 74 species) and timed phylogeny of Nanos and Apotolamprus dung beetles (Canthonini) in Madagascar with data on species’ geographical...

Data from: Host ecotype generates evolutionary and epidemiological divergence across a pathogen metapopulation

Anna-Liisa Laine, Jeremy J. Burdon, Adnane Nemri, Peter H. Thrall, A.-L. Laine, J. J. Burdon, A. Nemri & P. H. Thrall
The extent and speed at which pathogens adapt to host resistance varies considerably. This presents a challenge for predicting when—and where—pathogen evolution may occur. While gene flow and spatially heterogeneous environments are recognized to be critical for the evolutionary potential of pathogen populations, we lack an understanding of how the two jointly shape coevolutionary trajectories between hosts and pathogens. The rust pathogen Melampsora lini infects two ecotypes of its host plant Linum marginale that occur...

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: A comparative study of egg recognition signature mixtures in Formica ants

Heikki Helanterä & Patrizia D'Ettorre
Processing of information from the environment, such as assessing group membership in social contexts, is a major determinant of inclusive fitness. For social insects, recognizing brood origin is crucial for inclusive fitness in many contexts, such as social parasitism and kin conflicts within colonies. Whether or not a recognition signature is informative in kin conflicts, depends on the extent of a genetic contribution into the cues. We investigated colony and matriline specific variation in egg...

Data from: Using heterozygosity–fitness correlations to study inbreeding depression in an isolated population of white-tailed deer founded by few individuals

Jon E. Brommer, Jaana Kekkonen & Mikael Wikström
A heterozygosity–fitness correlations (HFCs) may reflect inbreeding depression, but the extent to which they do so is debated. HFCs are particularly likely to occur after demographic disturbances such as population bottleneck or admixture. We here study HFC in an introduced and isolated ungulate population of white-tailed deer Odocoileus virginianus in Finland founded in 1934 by four individuals. A total of 422 ≥ 1-year-old white-tailed deer were collected in the 2012 hunting season in southern Finland...

Data from: Inbreeding-related trade-offs in stress-resistance in the ant Formica exsecta

Dalial Freitak, Nick Bos, Dimitri Stucki, Liselotte Sundström, N. Bos, D. Freitak, D. Stucki & L. Sundstrom
Inbred individuals and populations are predicted to suffer from inbreeding depression, especially in times of stress. Under natural conditions, organisms are exposed to more than one stressor at any one time, highlighting the importance of stress resistance traits. We studied how inbreeding- and immunity-related traits are correlated under different dietary conditions in the ant Formica exsecta. Its natural diet varies in the amount and nature of plant secondary compounds and the level of free radicals,...

Data from: A hyperparasite affects the population dynamics of a wild plant pathogen

Charlotte Tollenaere, Benoit Pernechele, Hannu S. Mäkinen, Steven R. Parratt, Mark Z. Németh, Gabor M. Kovács, Levente Kiss, Ayco J. M. Tack & Anna-Liisa Laine
Assessing the impact of natural enemies of plant and animal pathogens on their host's population dynamics is needed to determine the role of hyperparasites in affecting disease dynamics, and their potential for use in efficient control strategies of pathogens. Here we focus on the long-term study describing metapopulation dynamics of an obligate pathogen, the powdery mildew (Podosphaera plantaginis) naturally infecting its wild host plant (Plantago lanceolata) in the fragmented landscape of the Åland archipelago (southwest...

Data from: The interplay between local ecology, divergent selection and genetic drift in population divergence of a sexually antagonistic female trait

Kristina Karlsson Green, Erik I. Svensson, Johannes Bergsten, Roger Härdling, Bengt Hansson & Kristina Karlsson Green
Genetically polymorphic species offer the possibility to study maintenance of genetic variation and the potential role for genetic drift in population divergence. Indirect inference of the selection regimes operating on polymorphic traits can be achieved by comparing population divergence in neutral genetic markers with population divergence in trait frequencies. Such an approach could further be combined with ecological data to better understand agents of selection. Here, we infer the selective regimes acting on a polymorphic...

Data from: The effectiveness and costs of pathogen resistance strategies in a perennial plant

Hanna Susi & Anna-Liisa Laine
Plants have evolved different strategies to resist pathogens, but little is known about how effective, stable and costly these mechanisms are in perennial plants across multiple growing seasons. We conducted a laboratory experiment to assess resistance variation in Plantago lanceolata against the powdery mildew-causing fungus Podosphaera plantaginis and to measure possible trade-offs between the different resistance strategies. To test stability and costs of resistance, we established common garden populations of plants possessing three different resistance...

Data from: Population divergence in compensatory growth responses and their costs in sticklebacks

Nurul Izza Ab Ghani & Juha Merilä
Compensatory growth (CG) may be an adaptive mechanism that helps to restore an organisms’ growth trajectory and adult size from deviations caused by early life resource limitation. Yet, few studies have investigated the genetic basis of CG potential and existence of genetically based population differentiation in CG potential. We studied population differentiation, genetic basis, and costs of CG potential in nine-spined sticklebacks (Pungitius pungitius) differing in their normal growth patterns. As selection favors large body...

Data from: Heritability of flight and resting metabolic rates in the Glanville fritillary butterfly

Anniina L. K. Mattila, Ilkka Hanski, A. L. K. Mattila & I. Hanski
Dispersal capacity is a key life history trait especially in species inhabiting fragmented landscapes. Evolutionary models predict that, given sufficient heritable variation, dispersal rate responds to natural selection imposed by habitat loss and fragmentation. Here, we estimate phenotypic variance components and heritability of flight and resting metabolic rates in an ecological model species, the Glanville fritillary butterfly, in which flight metabolic rate is known to correlate strongly with dispersal rate. We modeled a two-generation pedigree...

Data from: Geographic variation in age structure and longevity in the nine-spined stickleback (Pungitius pungitius)

Jacquelin DeFaveri, Takahito Shikano & Juha Merilä
Variation in age and size of mature nine-spined sticklebacks (Pungitius pungitius) within and among 16 Fennoscandian populations were assessed using skeletochronology. The average age of individuals in a given population varied from 1.7 to 4.7 years. Fish from pond populations were on average older than those from lake and marine populations, and females tended to be older than males. Reproduction in marine and lake populations commenced typically at an age of two years, whereas that...

Data from: Predicting rates of isotopic turnover across the animal kingdom: a synthesis of existing data

Stephen M. Thomas & Thomas W. Crowther
The stable isotopes of carbon (13C /12C) and nitrogen (15N /14N) represent powerful tools in food-web ecology, providing a wide range of dietary information in animal consumers. However, identifying the temporal window over which a consumer's isotopic signature reflects its diet requires an understanding of elemental incorporation, a process that varies from days to years across species and tissue types. Though theory predicts body size and temperature are likely to control incorporation rates, this has...

Data from: Ecological and evolutionary effects of fragmentation on infectious disease

Jussi Jousimo, Ayco J. M. Tack, Otso Ovaskainen, Tommi Mononen, Hanna Susi, Charlotte Tollenaere & Anna-Liisa Laine
Ecological theory predicts that disease incidence increases with increasing density of host networks, yet evolutionary theory suggests that host resistance increases accordingly. To test the combined effects of ecological and evolutionary forces on host-pathogen systems, we analyzed the spatiotemporal dynamics of a plant (Plantago lanceolata)–fungal pathogen (Podosphaera plantaginis)relationship for 12 years in over 4000 host populations. Disease prevalence at the metapopulation level was low, with high annual pathogen extinction rates balanced by frequent (re-)colonizations. Highly...

Registration Year

  • 2014
    40

Resource Types

  • Dataset
    40

Affiliations

  • University of Helsinki
    40
  • University of Oulu
    4
  • Wageningen University & Research
    4
  • University of Eastern Finland
    3
  • University of Aberdeen
    3
  • University of Oxford
    3
  • Lund University
    2
  • Eötvös Loránd University
    2
  • Forest Research Institute
    2
  • Wellcome Trust
    2