57 Works

Data from: Intra-ejaculate sperm selection in female zebra finches

Nicola Hemmings, Clair Bennison & Timothy R. Birkhead
Among internal fertilizers, typically fewer than 1% sperm survive the journey through the oviduct. Several studies suggest that the sperm reaching the ovum—the ‘fertilizing set’—comprise a non-random sub-population, but the characteristics of this group remain unclear. We tested whether oviductal selection in birds results in a morphologically distinct subset of sperm, by exploiting the fact that the fertilizing set are trapped by the perivitelline layer of the ovum. We show that these sperm have remarkably...

Bulk density, carbon and nitrogen content in soil profiles from permafrost in subarctic Canada

C. Estop-Aragones, J.P. Fisher, M.A. Cooper, A. Thierry, R. Treharne, J.B. Murton, G.K. Phoenix, D.J. Charman, M. Williams & I.P. Hartley
This dataset consists of measurements of bulk density, carbon and nitrogen content in soil profiles from permafrost in subarctic Canada. Soil cores were sampled during early summer in 2013 and 2014. Soil cores were sampled from a peatland plateau and thawing features of the peatland plateau, and from an unburnt and burnt black spruce forest, and additional sites in Yukon and Northwest Territories.

Soil respired radiocarbon as CO2 and CH4 from peatland plateaus and thawing peatland plateaus and from burnt and unburnt forests from permafrost in subarctic Canada

C. Estop-Aragones, J.P. Fisher, M.A. Cooper, A. Thierry, R. Treharne, J.B. Murton, G.K. Phoenix, D.J. Charman, M. Williams & I.P. Hartley
This dataset contains measures of soil respired radiocarbon as CO2 and CH4 from peatland plateaus and thawing peatland plateaus and from burnt and unburnt forests from permafrost in subarctic Canada. The radiocarbon content of soil respired CO2 and CH4 was measured during summer in 2013 and 2014 in Yukon and Northwest Territories. Monitored sites included peatland plateaus, thawing features of peatland plateaus and unburnt and burnt black spruce forests.

Data from: Experimental evidence of genome-wide impact of ecological selection during early stages of speciation-with-gene-flow

Scott P. Egan, Gregory J. Ragland, Lauren Assour, Thomas H. Q. Powell, Glen R. Hood, Scott Emrich, Patrik Nosil, Jeffrey L. Feder & Thomas H.Q. Powell
Theory predicts that speciation-with-gene-flow is more likely when the consequences of selection for population divergence transitions from mainly direct effects of selection acting on individual genes to a collective property of all selected genes in the genome. Thus, understanding the direct impacts of ecologically based selection, as well as the indirect effects due to correlations among loci, is critical to understanding speciation. Here, we measure the genome-wide impacts of host-associated selection between hawthorn and apple...

Data from: How big is it really? Assessing the efficacy of indirect estimates of body size in Asian elephants

Simon N. Chapman, Hannah S. Mumby, Jennie A.H. Crawley, Khyne U. Mar, Win Htut, Aung Thura Soe, Htoo Htoo Aung, Virpi Lummaa & Jennie A. H. Crawley
Information on an organism’s body size is pivotal in understanding its life history and fitness, as well as helping inform conservation measures. However, for many species, particularly large-bodied wild animals, taking accurate body size measurements can be a challenge. Various means to estimate body size have been employed, from more direct methods such as using photogrammetry to obtain height or length measurements, to indirect prediction of weight using other body morphometrics or even the size...

Methane fluxes from peatland plateaus and thawing peatland plateaus and from burnt and unburnt forests from permafrost in subarctic Canada

M.A. Cooper, C. Estop-Aragones, J.P. Fisher, A. Thierry, R. Treharne, J.B. Murton, G.K. Phoenix, D.J. Charman, M. Williams & I.P. Hartley
This dataset contains methane fluxes from peatland plateaus and thawing peatland plateaus and from burnt and unburnt forests from permafrost in subarctic Canada. Methane fluxes were monitored during summer in 2013 and 2014 in Yukon and Northwest Territories. Monitored sites included peatland plateaus and thawing features of peatland plateaus.

Soil dates using 210Pb in profiles from permafrost in subarctic Canada

C. Estop-Aragones, J.P. Fisher, M.A. Cooper, A. Thierry, R. Treharne, J.B. Murton, G.K. Phoenix, D.J. Charman, M. Williams & I.P. Hartley
This dataset consists of soils dated using 210Pb in profiles from permafrost in subarctic Canada. Soil cores were sampled during early summer in 2013 and 2014 from peatland plateaus, thawing peatland plateaus, burnt and unburnt black spruce forests in Yukon and Northwest Territories. The upper part of the soil profile was dated using 210Pb to quantify recent carbon accumulation rates.

Data from: Accounting for uncertainty in dormant life stages in stochastic demographic models

Maria Paniw, Pedro F. Quintana-Ascencio, Fernando Ojeda & Roberto Salguero-Gómez
Dormant life stages are often critical for population viability in stochastic environments, but accurate field data characterizing them are difficult to collect. Such limitations may translate into uncertainties in demographic parameters describing these stages, which then may propagate errors in the examination of population-level responses to environmental variation. Expanding on current methods, we 1) apply data-driven approaches to estimate parameter uncertainty in vital rates of dormant life stages and 2) test whether such estimates provide...

Data from: Energy benefits and emergent space use patterns of an empirically parameterized model of memory-based patch selection

Jerod A. Merkle, Jonathan R. Potts & Daniel Fortin
Many species frequently return to previously visited foraging sites. This bias towards familiar areas suggests that remembering information from past experience is beneficial. Such a memory-based foraging strategy has also been hypothesized to give rise to restricted space use (i.e. a home range). Nonetheless, the benefits of empirically derived memory-based foraging tactics and the extent to which they give rise to restricted space use patterns are still relatively unknown. Using a combination of stochastic agent-based...

Data from: Differential gene expression according to race and host plant in the pea aphid

Isobel Eyres, Julie Jaquiéry, Akiko Sugio, Ludovic Duvaux, Karim Gharbi, Jing-Jiang Zhou, Fabrice Legeai, Michaela Nelson, Jean-Christophe Simon, Carole M. Smadja, Roger Butlin & Julia Ferrari
Host-race formation in phytophagous insects is thought to provide the opportunity for local adaptation and subsequent ecological speciation. Studying gene expression differences amongst host races may help to identify phenotypes under (or resulting from) divergent selection and their genetic, molecular and physiological bases. The pea aphid (Acyrthosiphon pisum) comprises host races specializing on numerous plants in the Fabaceae and provides a unique system for examining the early stages of diversification along a gradient of genetic...

Data from: A universal mechanism generating clusters of differentiated loci during divergence-with-migration

Marina Rafajlović, Anna Emanuelsson, Kerstin Johannesson, Roger K. Butlin & Bernhard Mehlig
Genome-wide patterns of genetic divergence reveal mechanisms of adaptation under gene flow. Empirical data show that divergence is mostly concentrated in narrow genomic regions. This pattern may arise because differentiated loci protect nearby mutations from gene flow, but recent theory suggests this mechanism is insufficient to explain the emergence of concentrated differentiation during biologically realistic timescales. Critically, earlier theory neglects an inevitable consequence of genetic drift: stochastic loss of local genomic divergence. Here, we demonstrate...

Data from: The colour of paternity: extra-pair paternity in the wild Gouldian finch does not appear to be driven by genetic incompatibility between morphs

Peri E. Bolton, Lee Ann Rollins, James Brazill-Boast, Kang-Wook Kim, Terry Burke, Simon C. Griffith & K-W. Kim
In socially monogamous species, individuals can use extra-pair paternity and offspring sex allocation as adaptive strategies to ameliorate costs of genetic incompatibility with their partner. Previous studies on domesticated Gouldian finches (Erythrura gouldiae) demonstrated a genetic incompatibility between head colour morphs, the effects of which are more severe in female offspring. Domesticated females use differential sex allocation, and extra-pair paternity with males of compatible head colour, to reduce fitness costs associated with incompatibility in mixed-morph...

Data from: The stable isotope ecology of mycalesine butterflies: implications for plant-insect co-evolution

Erik Van Bergen, Henry S. Barlow, Oskar Brattström, Howard Griffiths, Ullasa Kodandaramaiah, Colin P. Osborne & Paul M. Brakefield
One of the most dramatic examples of biome shifts in the geological record is the rapid replacement of C3 vegetation by C4 grasses in (sub-) tropical regions during the Late Miocene–Pliocene. Climate-driven biome shifts of this magnitude are expected to have a major impact on diversification and ecological speciation, especially in grazing taxa. Mycalesine butterflies are excellent candidates to explore the evolutionary impact of these C3/C4 shifts on insect grazer communities. Mycalesine butterflies feed on...

Data from: Conserved genetic architecture underlying recombination rate variation in a wild population of Soay sheep (Ovis aries)

Susan E. Johnston, Camillo Bérénos, Jon Slate & Josephine M. Pemberton
Meiotic recombination breaks down linkage disequilibrium and forms new haplotypes, meaning that it is an important driver of diversity in eukaryotic genomes. Understanding the causes of variation in recombination rate is important in interpreting and predicting evolutionary phenomena and for understanding the potential of a population to respond to selection. However, despite attention in model systems, there remains little data on how recombination rate varies at the individual level in natural populations. Here, we used...

Data from: Color phenotypes are under similar genetic control in two distantly related species of Timema stick insect

Aaron Arthur Comeault, Clarissa Ferreira Carvalho, Stuart R. Dennis, Victor Soria-Carrasco, Patrik Nosil & Stuart Dennis
Ecology and genetics are both of general interest to evolutionary biologists as they can influence the phenotypic and genetic response to selection. The stick insects Timema podura and T. cristinae exhibit a green/melanistic body color polymorphism that is subject to different ecologically-based selective regimes in the two species. Here we describe aspects of the genetics of this color polymorphism in T. podura, and compare this to previous results in T. cristinae. We first show that...

Data from: Selective logging in tropical forests decreases the robustness of liana-tree interaction networks to the loss of host tree species

Ainhoa Magrach, Rebecca A. Senior, Andrew Rogers, Deddy Nurdin, Suzan Benedick, William F. Laurance, Luis Santamaría & David P. Edwards
Selective logging is one of the major drivers of tropical forest degradation, causing important shifts in species composition. Whether such changes modify interactions between species and the networks in which they are embedded remain fundamental questions to assess the ‘health’ and ecosystem functionality of logged forests. We focus on interactions between lianas and their tree hosts within primary and selectively logged forests in the biodiversity hotspot of Malaysian Borneo. We found that lianas were more...

Data from: Extremophile Poeciliidae: multivariate insights into the complexity of speciation along replicated ecological gradients

Rüdiger Riesch, Michael Tobler, Hannes Lerp, Jonas Jourdan, Tess Doumas, Patrik Nosil, R. Brian Langerhans & Martin Plath
Background: Replicate population pairs that diverge in response to similar selective regimes allow for an investigation of (a) whether phenotypic traits diverge in a similar and predictable fashion, (b) whether there is gradual variation in phenotypic divergence reflecting variation in the strength of natural selection among populations, (c) whether the extent of this divergence is correlated between multiple character suites (i.e., concerted evolution), and (d) whether gradual variation in phenotypic divergence predicts the degree of...

Data from: InGaAs/InAlAs single photon avalanche diode for 1550 nm photons

Xiao Meng, Shiyu Xie, Xinxin Zhou, Niccolò Calandri, Mirko Sanzaro, Alberto Tosi, Chee Hing Tan & Jo Shien Ng
A single photon avalanche diode (SPAD) with an InGaAs absorption region, and an InAlAs avalanche region was designed and demonstrated to detect 1550 nm wavelength photons. The characterization included leakage current, dark count rate and single photon detection efficiency as functions of temperature from 210 to 294 K. The SPAD exhibited good temperature stability, with breakdown voltage dependence of approximately 45 mV K−1. Operating at 210 K and in a gated mode, the SPAD achieved...

Data from: Widespread correlations between climatic niche evolution and species diversification in birds

Christopher R. Cooney, Nathalie Seddon & Joseph A. Tobias
The adaptability of species’ climatic niches can influence the dynamics of colonisation and gene flow across climatic gradients, potentially increasing the likelihood of speciation, or reducing extinction in the face of environmental change. However, previous comparative studies have tested these ideas using geographically, taxonomically and ecologically restricted samples, yielding mixed results, and thus the processes linking climatic niche evolution with diversification remain poorly understood. Focusing on birds, the largest and most widespread class of terrestrial...

Data from: Multi-alternative decision making with non-stationary inputs

Luana F. Nunes & Kevin Gurney
One of the most widely implemented models for multi-alternative decision-making is the multihypothesis sequential probability ratio test (MSPRT). It is asymptotically optimal, straightforward to implement, and has found application in modelling biological decision-making. However, the MSPRT is limited in application to discrete (‘trial-based’), non-time-varying scenarios. By contrast, real world situations will be continuous and entail stimulus non-stationarity. In these circumstances, decision-making mechanisms (like the MSPRT) which work by accumulating evidence, must be able to discard...

Data from: Managing cryptic biodiversity: Fine-scale intralacustrine speciation along a benthic gradient in Alpine whitefish (Coregonus spp.)

Alan G. Hudson, Baenz Lundsgaard-Hansen, Kay Lucek, Pascal Vonlanthen & Ole Seehausen
Whitefish (Coregonus spp.) are an important catch for many freshwater fisheries, particularly in Switzerland. In support of this, supplemental stocking of whitefish species is carried out, despite lacking complete knowledge of the extent, distribution and origin of whitefish diversity in these lakes, potentially threatening local endemics via artificial gene flow. Here, we investigate phenotypic and genetic differentiation among coexisting whitefish species spawning along a depth gradient in a subalpine Swiss lake to better delineate intralacustrine...

Data from: Multivariate selection and intersexual genetic constraints in a wild bird population

Jocelyn Poissant, Micheal B. Morrissey, Andrew G. Gosler, Jon Slate & Ben C. Sheldon
When traits are genetically correlated between the sexes, the response to selection in one sex can be altered by indirect selection in the other sex, a type of genetic constraint commonly referred to as intralocus sexual conflict (ISC). While potentially common, ISC has rarely been studied in wild populations. In this study, we applied a multivariate framework to quantify the microevolutionary impacts of ISC over a set of morphological traits (wing length, tarsus length, bill...

Soil dates using radiocarbon in profiles from permafrost in subarctic Canada

C. Estop-Aragones, J.P. Fisher, M.A. Cooper, A. Thierry, R. Treharne, J.B. Murton, G.K. Phoenix, D.J. Charman, M. Williams & I.P. Hartley
This dataset consists of soil dates determined using radiocarbon in profiles from permafrost in subarctic Canada. Depth-specific soil core samples were dated using radiocarbon. Soil cores were sampled during early summer in 2013 and 2014. Each year soil cores were sampled from a peatland plateau, thawing features of the peatland plateau, unburnt and burnt black spruce forests, and additional sites in Yukon and Northwest Territories.

Laboratory soil incubation respiration rates from permafrost in subarctic Canada

C. Estop-Aragones, J.P. Fisher, M.A. Cooper, A. Thierry, R. Treharne, J.B. Murton, G.K. Phoenix, D.J. Charman, M. Williams & I.P. Hartley
This dataset contains measures of laboratory soil incubation respiration rates from permafrost in subarctic Canada. Samples from soil cores were incubated in the laboratory to quantify CO2 and CH4 gas production rates at two different temperatures under both anoxic and oxic incubations. Soil cores were sampled from a peatland plateau and a thawing feature of the peatland plateau and from a unburnt and a burnt black spruce forest, and also additional sites in Yukon.

Soil moisture profiles from permafrost in subarctic Canada

C. Estop-Aragones, J.P. Fisher, M.A. Cooper, A. Thierry, R. Treharne, J.B. Murton, G.K. Phoenix, D.J. Charman, M. Williams & I.P. Hartley
This dataset consists of soil moisture profiles from permafrost in subarctic Canada. Soil mositure profiles were monitored during summer in 2013 and 2014 in Yukon and Northwest Territories. Monitored sites included peatland plateaus, unburnt and burnt black spruce forests, and additional sites.

Registration Year

  • 2016
    57

Resource Types

  • Dataset
    57

Affiliations

  • University of Sheffield
    57
  • University of Edinburgh
    12
  • University of Exeter
    12
  • University of Sussex
    11
  • Swiss Federal Institute of Aquatic Science and Technology
    3
  • University of Gothenburg
    3
  • University of Oxford
    3
  • Rice University
    2
  • University of Notre Dame
    2
  • University of Queensland
    2