27 Works

Data from: Multi-trait single-step genomic prediction accounting for heterogeneous (co)variances over the genome

Emre Karaman, Mogens S. Lund & Guosheng Su
Widely used genomic prediction models may not properly account for heterogeneous (co)variance structure across the genome. Models such as BayesA and BayesB assume locus-specific variance, which are highly influenced by the prior for (co)variance of single nucleotide polymorphism (SNP) effect, regardless of the size of data. Models such as BayesC or GBLUP assume a common (co)variance for a proportion (BayesC) or all (GBLUP) of the SNP effects. In this study, we propose a multi-trait Bayesian...

Data from: Consequences of past and present harvest management in a declining flyway population of common eiders Somateria mollissima

Rune Tjørnløv, Roger Pradel, Remi Choquet, Thomas Kjær Christensen & Morten Frederiksen
1. Harvested species population dynamics are shaped by the relative contribution of natural and harvest mortality. Natural mortality is usually not under management control, so managers must continuously adjust harvest rates to prevent overexploitation. Ideally, this requires regular assessment of the contribution of harvest to total mortality and how this affects population dynamics. 2. To assess the impact of hunting mortality on the dynamics of the rapidly declining Baltic/Wadden Sea population of common eiders Somateria...

Using vertebrate environmental DNA from seawater in biomonitoring of marine habitats

Eva Egelyng Sigsgaard, Felipe Torquato, Tobias Guldberg Frøslev, Alec B. M. Moore, Johan Mølgård Sørensen, Pedro Range, Radhouane Ben Hamadou, Steffen Sanvig Bach, Peter Rask Møller & Philip Francis Thomsen
Conservation and management of marine biodiversity depends on biomonitoring of marine habitats, but current approaches are resource-intensive and require different approaches for different organisms. Environmental DNA (eDNA) extracted from water samples is an efficient and versatile approach to detecting aquatic animals. In the ocean, eDNA composition reflects local fauna at fine spatial scales, but little is known about the effectiveness of eDNA-based monitoring of marine communities at larger scales. We investigated the potential of eDNA...

Data from: Species richness change across spatial scales

Jonathan M. Chase, Brian J. McGill, Patrick L. Thompson, Laura H. Antão, Amanda E. Bates, Shane A. Blowes, Maria Dornelas, Andrew Gonzalez, Anne E. Magurran, Sarah R. Supp, Marten Winter, Anne D. Bjorkmann, Helge Bruelheide, Jarrett E.K. Byrnes, Juliano Sarmento Cabral, Robin Ehali, Catalina Gomez, Hector M. Guzman, Forest Isbell, Isla H. Myers-Smith, Holly P. Jones, Jessica Hines, Mark Vellend, Conor Waldock & Mary O'Connor
Humans have elevated global extinction rates and thus lowered global-scale species richness. However, there is no a priori reason to expect that losses of global species richness should always, or even often, trickle down to losses of species richness at regional and local scales, even though this relationship is often assumed. Here, we show that scale can modulate our estimates of species richness change through time in the face of anthropogenic pressures, but not in...

Data from: Conservation genetics of the pond bat (Myotis dasycneme) with special focus on the populations in northwestern Germany and Jutland, Denmark

Liselotte Wesley Andersen, Ronja Dirksen, Elena A. Nikulina, Hans J. Baagøe, Gunars Petersons, Péter Estók, Oleg L. Orlov, Maria V. Orlova, Florian Gloza-Rausch, Matthias Göttsche, Esben Fjederholt, Frauke Krüger & Morten Elmeros
Conservation genetics is important in the management of endangered species, helping to understand their connectivity and long-term viability, thus identifying populations of importance for conservation. The pond bat (Myotis dasycneme) is a rare species classified as ‘Near threatened’ with a wide but patchy Palearctic distribution. A total of 277 samples representing populations in Denmark, Germany, Latvia, Hungary and Russia were used in the genetic analyses; 224 samples representing Denmark, Germany and Russia were analysed at...

Data from: Temperature shapes opposing latitudinal gradients of plant taxonomic and phylogenetic β diversity

Ian R. McFadden, Brody Sandel, Constantinos Tsirogiannis, Naia Morueta-Holme, Jens-Christian Svenning, Brian J. Enquist & Nathan J. B. Kraft
Latitudinal and elevational richness gradients have received much attention from ecologists but there is little consensus on underlying causes. One possible proximate cause is increased levels of species turnover, or β diversity, in the tropics compared to temperate regions. Here, we leverage a large botanical dataset to map taxonomic and phylogenetic β diversity, as mean turnover between neighboring 100 × 100 km cells, across the Americas and determine key climatic drivers. We find taxonomic and...

Data from: Field metabolic rates of teleost fishes are recorded in otolith carbonate

Ming-Tsung Chung, Clive N. Trueman, Jane A. Godiksen, Mathias Engell Holmstrup & Peter Grønkjær
Field metabolic rate (FMR) is key to understanding individual and population-level responses to environmental changes, but is challenging to measure in field conditions, particularly in aquatic environments. Here we show that FMR can be estimated directly from the isotopic composition of carbon in fish otoliths (δ13Coto). We describe the relationship between δ13Coto values and oxygen consumption rate, and report results from laboratory experiments relating individual-level measurements of oxygen consumption rates to δ13Coto values in Atlantic...

Extracting physiological information in experimental biology via Eulerian video magnification

Henrik Lauridsen, Selina Gonzales, Daniela Hedwig, Kathryn L. Perrin, Catherine J.A. Williams, Peter H. Wrege, Mads F. Bertelsen, Michael Pedersen & Jonathan T. Butcher
Background: Videographic material of animals can contain inapparent signals, such as color changes or motion that hold information about physiological functions, such as heart and respiration rate, pulse wave velocity and vocalization. Eulerian video magnification allows enhancement of such signals to enable their detection. The purpose of this study is to demonstrate how signals relevant to experimental physiology can be extracted from non-contact videographic material of animals. Results: We applied Eulerian video magnification to detect...

Data from: Testing the thermal limits: non-linear reaction norms drive disparate thermal acclimation responses in Drosophila melanogaster

Paul V. Salachan, Hélène Burgaud & Jesper G. Sørensen
Critical thermal limits are important ecological parameters for studying thermal biology and for modelling species’ distributions under current and changing climatic conditions (including predicting the risk of extinction for species from future warming). However, estimates of the critical thermal limits are biased by the choice of assay and assay conditions, which differ among studies. Furthermore, estimates of the potential for phenotypic plasticity (thermal acclimation) to buffer against future warming are usually based on single assay...

Data from: Long-term sound and movement recording tags to study natural behaviour and reaction to ship noise of seals

Lonnie Mikkelsen, Mark Johnson, Danuta Maria Wisniewska, Abbo Van Neer, Ursula Siebert, Peter Teglberg Madsen & Jonas Teilmann
The impact of anthropogenic noise on marine fauna is of increasing conservation concern with vessel noise being one of the major contributors. Animals that rely on shallow coastal habitats may be especially vulnerable to this form of pollution. Very limited information is available on how much noise from ship traffic individual animals experience, and how they may react to it due to a lack of suitable methods. To address this, we developed long‐duration audio and...

Data from: Richness of plant communities plays a larger role than climate in determining responses of species richness to climate change

Qi Wang, Zhenhua Zhang, Rui Du, Shiping Wang, Jichuang Duan, Amy Iler, Shilong Piao, Luo Caiyun, Jiang Lili, Lv Wangwang, Zhang Lirong, Meng Fandong, Suonan Ji, Li Yaoming, Li Bowen, Liu Peipei, Tsechoe Dorji, Wang Zhezhen, Li Yinnnian, Du Mingyuan, Zhou Huakun, Zhao Xinquan & Wang Yanfen
1. Experimental warming in situ suggests that warming could lead to a loss of biodiversity. However, species that remain in situ and experience climate change will interact with species tracking climate change, which could also affect patterns of biodiversity. The relative contribution of species gains and losses to net changes in species richness is still unclear. 2. We use transplanted plant communities to test the hypothesis that both the change in climate and ecological communities...

Data from: The ecological significance of extremely large flocks of birds

Anders Pape Møller & Karsten Laursen
Population size is generally limited by resource availability during and outside the breeding season. Therefore, maximum size of flocks may provide important information on population regulation and the influence of diet and trophic level on maximal degree of sociality. We hypothesized that (a) flock size should increase with nutrient availability; (b) flock size should decrease with latitude because productivity is higher at lower latitude; (c) aquatic habitats should have larger flocks than terrestrial habitats because...

Speciation history of European (Anguilla anguilla) and American eel (A. rostrata), analyzed using genomic data

Natacha Nikolic, Shenglin Liu, Magnus W. Jacobsen, Bjarni Jónsson, Louis Bernatchez, Pierre-Alexandre Gagnaire & Michael M. Hansen
Speciation in the ocean could differ from terrestrial environments due to fewer barriers to gene flow. Hence, sympatric speciation might be common, with American and European eel being candidates for exemplifying this. They show disjunct continental distributions on both sides of the Atlantic, but spawn in overlapping regions of the Sargasso Sea from where juveniles are advected to North American, European and North African coasts. Hybridization and introgression is known to occur, with hybrids almost...

Steep topography buffers threatened gymnosperm species against anthropogenic pressures in China

Ditte Arp Jensen, Keping Ma & Jens-Christian Svenning
China is one of the most species-rich countries in the world, harbouring many rare gymnosperms. Following recent human-led loss of forests, China is now experiencing increases in forest cover resulting from efforts of reforestation-schemes. As anthropogenic activities have previously been found to interact with topography in shaping forest cover in China and considering the large human population and the ongoing population increase of the country, it is important to understand the role of anthropogenic pressures...

Catchment properties and the photosynthetic trait composition of freshwater plant communities

Lars Lønsmann Iversen, A. Winkel, L. Baastrup-Spohr, A. B. Hinke, J. Alahuhta, A. Baattrup-Pedersen, S. Birk, P. Brodersen, P. A. Chambers, F. Ecke, T. Feldmann, D. Gebler, J. Heino, T. S. Jespersen, S. J. Moe, T. Riis, L. Sass, O. Vestergaard, S. C. Maberly, K. Sand-Jensen & O. Pedersen
Unlike in land plants, photosynthesis in many aquatic plants relies on bicarbonate in addition to carbon dioxide (CO2) to compensate for the low diffusivity and potential depletion of CO2 in water. Concentrations of bicarbonate and CO2 vary greatly with catchment geology. In this study, we investigate whether there is a link between these concentrations and the frequency of freshwater plants possessing the bicarbonate use trait. We show, globally, that the frequency of plant species with...

Data from: Population persistence under high mutation rate: from evolutionary rescue to lethal mutagenesis

Yoann Anciaux, Amaury Lambert, Ophelie Ronce, Lionel Roques & Guillaume Martin
Populations may genetically adapt to severe stress that would otherwise cause their extirpation. Recent theoretical work, combining stochastic demography with Fisher’s Geometric Model of adaptation, has shown how evolutionary rescue becomes unlikely beyond some critical intensity of stress. Increasing mutation rates may however allow adaptation to more intense stress, raising concerns about the effectiveness of treatments against pathogens. This previous work assumes that populations are rescued by the rise of a single resistance mutation. However,...

Data from: Maintenance of deceptive gifts in a natural spider population: ecological and demographic factors

Maria Albo, Valentina Franco-Trecu, Philip Wojciechowski, Soren Toft & Trine Bilde
Alternative mating tactics are expected to occur predominantly when mate competition is intense, resources are in short supply, or as a result of asymmetric power relationships between individuals. Males of the nuptial gift-giving spider Pisaura mirabilis use a prevailing tactic of offering a nutritive gift (insect prey) and a deceptive tactic of offering a worthless gift (consumed prey) to prospective mates. If the male’s tactic depends on pre-copulatory male-male competition, worthless gifts should occur primarily...

Data from: Multiple components of environmental change drive populations of breeding waders in seminatural grasslands

Karsten Laursen, Javier Balbontín, Ole Thorup, Henrik Haaning Nielsen, Tommy Asferg & Anders Pape Møller
Environments are rapidly changing due to climate change, land-use, intensive agriculture and the impact of hunting on predator populations. Here we analysed long-term data recorded during 1928-2014 on the size of breeding populations of waders at two large nature reserves in Denmark, Vejlerne and Tipperne, to determine the effects of components of environmental change on breeding populations of waders. Waders are closely associated with coastal marshes and meadows, and such habitats have been reduced extensively...

Future of the human climate niche

Chi Xu, Timothy Kohler, Timothy Lenton, Jens-Christian Svenning & Marten Scheffer
All species have an environmental niche, and despite technological advances, humans are unlikely to be an exception. Here, we demonstrate that for millennia, human populations have resided in the same narrow part of the climatic envelope available on the globe, characterized by a major mode around ∼11 °C to 15 °C mean annual temperature (MAT). Supporting the fundamental nature of this temperature niche, current production of crops and livestock is largely limited to the same...

Determination of microplastics in coastal beach sediments along Kattegat Sea, Denmark

R.A. Hansen & A. Gross
An evaluation of the level of contamination of microplastics in the coastal marine sediment from Kattegat Sea in Denmark has been conducted. The evaluation is based on sediment samples collated from beaches located on coasts partially surrounding the Kattegat Sea: Mou, Bogense, Hasmark, Zealand Odde, and Rorvig. Microplastics were extracted from the sediment samples using a newly developed density and flotation apparatus. Afterwards, the extracted microplastics were categorised under a stereo microscope, and the criteria...

Electronic Literature Translation: Translation as Process, Experience and Mediation

Manuel Portela, María Mencía & Søren Pold
"[T]ranslation is merely a preliminary way of coming to terms with the foreignness of languages to each other." (Walter Benjamin, "The Task of the Translator" [1921])

Data from: PalmTraits 1.0, a species-level functional trait database for palms worldwide

W. Daniel Kissling, Henrik Balslev, William J. Baker, John Dransfield, Bastian Göldel, Jun Ying Lim, Renske E. Onstein & Jens-Christian Svenning
Plant traits are critical to plant form and function —including growth, survival and reproduction— and therefore shape fundamental aspects of population and ecosystem dynamics as well as ecosystem services. Here, we present a global species-level compilation of key functional traits for palms (Arecaceae), a plant family with keystone importance in tropical and subtropical ecosystems. We derived measurements of essential functional traits for all (>2500) palm species from key sources such as monographs, books, other scientific...

Development and uncertainty assessment of pedotransfer functions for predicting water contents at specific pressure heads

Ali Mehmandoostkotlar, Quirijn De Jong Van Lier, Bo V Iversen, Alexandre Barros & Harry Vereecken
There has been much effort to improve the performance of pedotransfer functions (PTFs) using intelligent algorithms, but the issue of covariate shift, i.e. different probability distributions in training and testing datasets, and its impact on prediction uncertainty of PTFs has been rarely addressed. The common practice in PTF generation is to randomly separate the dataset in training and testing subsets, and outcomes of this random selection may be different if the process is subject to...

Data from: Differing climatic mechanisms control transient and accumulated vegetation novelty in Europe and eastern North America

Kevin Burke, John Williams, Simon Brewer, Walter Finsinger, Thomas Giesecke, David Lorenz & Alejandro Ordonez
Understanding the mechanisms that produce novel ecosystems is of joint interest to conservation biologists and paleoecologists. Here, we define and differentiate transient from accumulated novelty and evaluate four climatic mechanisms proposed to cause species to reshuffle into novel assemblages: high climatic novelty, high spatial rates of change (displacement), high variance among displacement rates for individual climate variables, and divergence among displacement vector bearings. We use climate simulations to quantify climate novelty, displacement, and divergence across...

Data from: Rapid induction of the heat hardening response in an Arctic insect

Mathias Sørensen, Torsten Kristensen, Jannik Lauritzen, Natasja Noer, Toke Høye & Simon Bahrndorff
The ability to cope with increasing and more variable temperatures, due to predicted climate changes, through plastic and/or evolutionary responses will be crucial for the persistence of Arctic species. Here, we investigate plasticity of heat tolerance of the Greenlandic seed bug Nysius groenlandicus, which inhabits areas with widely fluctuating temperatures. We test the heat resistance and hardening capacity (plasticity) of N. groenlandicus using both static (heat knock down time, HKDT) and dynamic (critical thermal maximum,...

Registration Year

  • 2019
    27

Resource Types

  • Dataset
    25
  • Data Paper
    1
  • Text
    1

Affiliations

  • Aarhus University
    27
  • University of Copenhagen
    4
  • German Center for Integrative Biodiversity Research
    2
  • University of Southampton
    2
  • University of Paris-Sud
    2
  • University of St Andrews
    2
  • Arizona State University
    2
  • Bangor University
    1
  • Centre d'Ecologie Fonctionnelle et Evolutive
    1
  • Stanford University
    1