22 Works

Short-term exposure to heatwave-like temperatures affects learning and memory in bumblebees

Maxence Gérard
Global warming has been identified as a key driver of bee declines around the world. While it is clear that elevated temperatures during the spring and summer months – the principal activity period of many bee species – is a factor in this decline, exactly how temperature affects bee survival is unknown. In vertebrates, there is clear evidence that elevated ambient temperatures impair cognition but whether and how heat affects the cognitive abilities of invertebrates...

Exposure to elevated temperature during development affects bumblebee foraging behavior

Maxence Gérard, Bérénice Cariou, Maxime Henrion, Charlotte Descamps & Emily Baird
Bee foraging behavior provides a pollination service that has both ecological and economic benefits. However, bee population decline could directly affect the efficiency of this interaction. Among the drivers of this decline, global warming has been implicated as an emerging threat but exactly how increasing temperatures affect bee foraging behavior remains unexplored. Here, we assessed how exposure to elevated temperatures during development affects the foraging behavior and morphology of workers from commercial and wild Bombus...

Data from: High spatiotemporal variability of methane concentrations challenges estimates of emissions across vegetated coastal ecosystems

Florian Roth, Xiaol Sun, Marc Geibel, John Prytcherch, Volker Brüchert, Stefano Bonaglia, Elias Broman, Francisco Nascimento, Christoph Humborg & Alf Norkko
Coastal methane (CH4) emissions dominate the global ocean CH4 budget and can offset the “blue carbon” storage capacity of vegetated coastal ecosystems. However, current estimates lack systematic, high-resolution, and long-term data from these intrinsically heterogeneous environments, making coastal budgets sensitive to statistical assumptions and uncertainties. Using continuous CH4 concentrations, δ13C-CH4 values, and CH4 sea-air fluxes across four seasons in three globally pervasive coastal habitats, we show that the CH4 distribution is spatially patchy over meter-scales...

Next-generation phylogeography resolves post-glacial colonization patterns in a widespread carnivore, the red fox (Vulpes vulpes), in Europe

Allan McDevitt, Ilaria Coscia, Samuel S Browett, Aritz Ruiz-Gonzalez, Mark Statham, Inka Ruczynska, Liam Roberts, Joanna Stojak, Alain Frantz, Karin Norén, Erik Agren, Jane Learmount, Mafalda Basto, Carlos Fernandes, Peter Stuart, David G Tosh, Magda Sindicic, Tibor Andreanszky, Marja Isomursu, Marek Panek, Andrey Korolev, Innokentiy M Okhlopkov, Alexander P Saveljev, Bostjan Pokorny, Katarina Flajsman … & Jan Wójcik
Carnivores tend to exhibit a lack of (or less pronounced) genetic structure at continental scales in both a geographic and temporal sense using various mitochondrial DNA markers on modern and/or ancient specimens. This tends to confound the identification of refugial areas and post-glacial colonization patterns in this group. In this study we used Genotyping-by-Sequencing (GBS) to reconstruct the phylogeographic history of a widespread carnivore, the red fox (Vulpes vulpes), in Europe by investigating broad-scale patterns...

Niche differentiation within a cryptic pathogen complex: climatic drivers and hyperparasitism at multiple spatial scales

Maria Faticov
Pathogens are embedded in multi-trophic food webs, which often include co-occurring cryptic species within the same pathogen complex. Nonetheless, we still lack an understanding of what dimensions of the ecological niche might allow these cryptic species to coexist. We explored the role of climate, host characteristics (tree autumn phenology) and attack by the fungal hyperparasite Ampelomyces (a group of fungi attacking plant pathogens) in defining the niches of three powdery mildew species (Erysiphe alphitoides, E....

DNA-based assessment of environmental degradation in an unknown fauna: the freshwater macroinvertebrates of the Indo-Burmese hotspot

, Alfred Burian, Thomas Creedy & Alfried Vogler
New methods are required for biomonitoring of poorly known tropical ecosystems, but biological assessments of environmental status are limited by insufficient information on taxonomy, composition, and ecology of local communities. The current work applies DNA-based assessment to establish the impact of various types of anthropogenic disturbances on the freshwater macroinvertebrates in an understudied biodiversity hotspot in South Asia, an area that attracts increasing attention for the loss of aquatic ecosystems. We sampled 16 river systems...

Simultaneous selection on vegetative and reproductive phenology in a perennial herb

Elsa Fogelström, Giulia Zacchello & Johan Ehrlén
The timing of different life history events are often correlated, and selection might only rarely be exerted independently on the timing of a single event. In plants, phenotypic selection has often been shown to favour earlier flowering. However, little is known about to what extent this selection acts directly vs. indirectly via vegetative phenology, and if selection on the two traits is correlational. We estimated direct, indirect and correlational phenotypic selection on vegetative and reproductive...

Data from: Loss-of-heterozygosity facilitates a fitness valley crossing in experimentally evolved multicellular yeast

Beatriz Baselga-Cervera, Noah Gettle & Michael Travisano
These data sets are generated to investigate a simple evolutionary landscape that arises from underdominance at a single locus where the fitness valley consists of only one less-fit genotype. We make use of an experimental system previous evolved in the laboratory, the Saccharomyces cerevisiae snowflake system. This system was experimentally selected resulting in a significant evolutionary shift, the transition from uni-to-multicellularity in asexual diploid populations. We carried out the phenotypic and fitness characterization of the...

Plant biodiversity declines with increasing coffee yield in Ethiopia’s coffee agroforests

Beyene Zewdie, Ayco Tack, Biruk Ayalew, Melaku Wondafrash, Sileshi Nemomissa & Kristoffer Hylander
1. Tropical agroforestry systems provide farmers with resources for their livelihoods, but are also well recognized as refuges for biodiversity. However, the relationship between yield and biodiversity might be negative in these systems, reflecting a potential trade-off between managing for increased yield or biodiversity. The potential for synergies will depend partly on the shape of the biodiversity-yield relationship, where a concave relationship suggests a faster decline of biodiversity with increasing yields than a linear or...

The biogeography of community assembly: latitude and predation drive variation in community trait distribution in a guild of epifaunal crustaceans

Collin Gross, Collin Gross, J Duffy, Kevin Hovel, Melissa Kardish, Pamela Reynolds, Christoffer Boström, Katharyn Boyer, Mathiew Cusson, Johan Eklöf, Aschwin Engelen, Klemens Eriksson, Joel Fodrie, John Griffin, Clara Hereu, Masakazu Hori, A Randall Hughes, Mikhail Ivanov, Pablo Jorgensen, Claudia Kruschel, Kun-Seop Lee, Jonathan Lefcheck, Karen McGlathery, Per-Olav Moksnes, Masahiro Nakaoka … & Jay Stachowicz
While considerable evidence exists of biogeographic patterns in the intensity of species interactions, the influence of these patterns on variation in community structure is less clear. Using a model selection approach on measures of trait dispersion in crustaceans associated with eelgrass (Zostera marina) spanning 30º of latitude in two oceans, we found that dispersion strongly increased with increasing predation and decreasing latitude. Ocean and epiphyte load appeared as secondary predictors; Pacific communities were more overdispersed...

Experimental sexual selection affects the evolution of physiological and life history traits

Martin D. Garlovsky, Luke Holman, Andrew L. Brooks, Rhonda R. Snook & Zorana K. Novicic
Sexual selection and sexual conflict are expected to affect all aspects of the phenotype, not only traits that are directly involved in reproduction. Here, we show coordinated evolution of multiple physiological and life history traits in response to long-term experimental manipulation of the mating system in populations of Drosophila pseudoobscura. Development time was extended under polyandry relative to monogamy in both sexes, potentially due to higher investment in traits linked to sexual selection and sexual...

Ice-nucleating particle data from the cruise to the North Pole on board the Oden Icebreaker

Grace Porter, Benjamin Murray, Michael Adams, Ian Brooks, Paul Zieger & Linn Karlsson
We report a time series of ice-nucleating particle concentration spectra measured on a cruise to the North Pole.

Temporal and spatial changes in benthic invertebrate trophic networks along a taxonomic richness gradient

Julie Garrison, Marie Nordström, Jan Albertsson & Francisco Nascimento
Species interactions underlie most ecosystem functions and are important for understanding ecosystem changes. Representing one type of species interaction, trophic networks were constructed from biodiversity monitoring data and known trophic links to assess how ecosystems have changed over time. The Baltic Sea is subject to many anthropogenic pressures, and low species diversity makes it an ideal candidate for determining how pressures change food webs. In this study, we used benthic monitoring data from 20 years...

Genetic composition and diversity of Arabica coffee in the crop’s center of origin and its impact on four major fungal diseases

Beyene Hailu & Yves Bawin
Conventional wisdom states that genetic variation reduces disease levels in plant populations. Nevertheless, crop species have been subject to a gradual loss of genetic variation through selection for specific traits during breeding, thereby increasing their vulnerability to biotic stresses such as pathogens. We explored how genetic variation in Arabica coffee sites in southwestern Ethiopia was related to the incidence of four major fungal diseases. Sixty sites were selected along a gradient of management intensity, ranging...

Resource-dependent investment in male sexual traits in a viviparous fish

Erika Fernlund Isaksson, Charel Reuland, Ariel Kahrl, Alessandro Devigili & John Fitzpatrick
Exaggerated and conspicuous sexually selected traits are often costly to produce and maintain. Costly traits are expected to show resource-dependent expression, since limited resources prevent animals from investing maximally in multiple traits simultaneously. However, there may be critical periods during an individual’s life where the expression of traits is altered if resources are limited. Moreover, costly sexual traits may arise from sexual selection acting both before (pre-copulatory) and after mating (post-copulatory). Gaining a robust understanding...

Are behavioural responses to eyespots in sticklebacks influenced by the visual environment? An experimental examination

John L. Fitzpatrick, Evelina Juntorp, Madicken Åkerman & John L. Fitzpatrick
Eyespots are taxonomically widespread colour patterns consisting of large concentric rings that are commonly assumed to protect prey by influencing the behaviours of predators. Although there is ample experimental evidence supporting an anti-predator function of eyespots in terrestrial animals, whether eyespots have a similar deterring function in aquatic animals remains unclear. Furthermore, studies in terrestrial systems suggest that the protective function of eyespots depends on ambient light conditions where predators encounter them, but this effect...

Longer and warmer prewinter periods reduce post-winter fitness in a diapausing insect

Matthew Nielsen, Philipp Lehmann & Karl Gotthard
1. Diapause is considered an important adaptation for survival of winter; however, insects often enter diapause long before its onset. Thus, diapausing insects must also be able to survive these prewinter conditions which warm temperatures could make quite energetically taxing despite relative inactivity. 2. We tested for both immediate and delayed fitness effects of prewinter conditions in diapausing Pieris napi butterfly pupae, experimentally exposing them to different prewinter treatments in a factorial design. We placed...

Phenotypic plasticity is aligned with phenological adaptation on micro- and macroevolutionary timescales

Stephen De Lisle, Maarit Mäenpää & Erik Svensson
In seasonally-variable environments, phenotypic plasticity in phenology may be critical for adaptation to fluctuating environmental conditions. Using an 18-generation longitudinal dataset from natural damselfly populations, we show that phenology has strongly advanced. Individual fitness data suggest this is likely an adaptive response towards a temperature-dependent optimum. A laboratory experiment revealed that developmental plasticity qualitatively matches the temperature-dependence of selection, partially explaining observed advance in phenology. Expanding our analysis to the macroevolutionary level, we use a...

Arrival dates of male and female willow warblers (Phylloscopus trochilus) to their breeding site in Sweden 1979-2016

Johanna Hedlund, Thord Fransson, Cecilia Kullberg, Jan-Olov Persson & Sven Jakobsson
Protandry is a widespread life-history phenomenon describing how males precede females at the site or state of reproduction. In migratory birds, protandry has important influence on individual fitness, the migratory syndrome and phenological response to climate change. Despite its significance, accurate analyses on the dynamics of protandry using data sets collected at the breeding site, are lacking. Basing our study on records collected daily, spanning a period of 38 years, we aim to investigate protandry...

Monitoring genetic diversity with new indicators applied to an alpine freshwater top predator

Anastasia Andersson, Sten Karlsson, Nils Ryman & Linda Laikre
Genetic diversity is the basis for population adaptation and long-term survival, yet rarely considered in biodiversity monitoring. One key issue is the need for useful and straightforward indicators of genetic diversity. We monitored genetic diversity over 40 years (1970-2010) in metapopulations of brown trout (Salmo trutta) inhabiting 27 small mountain lakes representing 10 lake systems in central Sweden using >1200 fish per time point. We tested six newly proposed indicators; three were designed for broad,...

Spatial variation in human disturbances and their effects on forest structure and biodiversity across an Afromontane forest

Dinkissa Beche, Ayco J.M. Tack, Sileshi Nemomissa, Bikila Warkineh, Debissa Lemessa, Patricia Rodrigues, Joern Fischer & Kristoffer Hylander
Context Human disturbances can have large impacts on forest structure and biodiversity, and thereby result in forest degradation, a property difficult to detect by remote sensing. Objectives To investigate spatial variation in anthropogenicdisturbances and their effects on forest structure and biodiversity. Methods In 144 plots of 20 x 20 m distributed across a forest area of 750 km2 in Southwest Ethiopia, we recorded: landscape variables (e.g., distance to forest edge), different human disturbances, forest structure...

Data: Interactive effects of drought and edge exposure on old-growth forest understory species

Irena Koelemeijer
Context: Both climatic extremes and land-use change constitute severe threats to biodiversity, but their interactive effects remain poorly understood. In forest ecosystems, the effects of climatic extremes can be exacerbated at forest edges. Objectives: We explore the hypothesis that an extreme summer drought reduced the richness and coverage of old-growth forest species, particularly in forest patches with high edge exposure. Methods: Using a high-resolution spatially explicit precipitation dataset, we could detect variability in drought intensity...

Registration Year

  • 2022
    22

Resource Types

  • Dataset
    22

Affiliations

  • Stockholm University
    22
  • Lund University
    2
  • University of Gothenburg
    2
  • Åbo Akademi University
    2
  • Addis Ababa University
    2
  • Institute of Biology of Komi Scientific Centre
    1
  • University of the Basque Country
    1
  • University of Padua
    1
  • College of Charleston
    1
  • National Veterinary Institute
    1