49 Works

Echolocation activity of harbour porpoises, Phocoena phocoena, show seasonal artificial reef attraction despite elevated noise levels close to oil and gas platforms

Jonas Teilmann
Harbour porpoises frequently alter their behaviour in response to underwater sound from shipping, seismic surveys, drilling and marine renewables. Less well understood is the response of porpoises to sounds emitted from oil and gas (O&G) platforms during routine operations. The responses are not easily predictable as platforms can act simultaneously and to varying degree as a source of disturbance through noise and attraction through an artificial reef effect with increased prey abundance and diversity. To...

Detecting flying insects using car nets and DNA metabarcoding

Cecilie Svenningsen, Tobias Guldberg Frøslev, Jesper Bladt, Lene Bruhn Pedersen, Jonas Colling Larsen, Rasmus Ejrnæs, Camilla Fløjgaard, Anders Hansen, Jacob Heilmann-Clausen, Robert Dunn & Anders Tøttrup
Monitoring insects across space and time is challenging, due to their vast taxonomic and functional diversity. This study demonstrates how nets mounted on rooftops of cars (car nets) and DNA metabarcoding can be applied to sample flying insect richness and diversity across large spatial scales within a limited time period. During June 2018, 365 car net samples were collected by 151 volunteers during two daily time intervals on 218 routes in Denmark. Insect bulk samples...

Data from: Warming and eutrophication interactively drive changes in the methane-oxidizing community of shallow lakes

Thomas P.A. Nijman, Thomas A. Davidson, Stefan T.J. Weideveld, Joachim Audet, Chiara Esposito, Eti E. Levi, Adrian Ho, Leon P.M. Lamers, Erik Jeppesen & Annelies J. Veraart
Freshwater ecosystems are the largest natural source of the greenhouse gas methane (CH4), with shallow lakes a particular hot spot. Eutrophication and warming generally increase lake CH4 emissions but their impacts on the sole biological methane sink - methane oxidation - and methane-oxidizer community dynamics are poorly understood. We used the world’s longest-running freshwater climate-change mesocosm experiment to determine how methane-oxidizing bacterial (MOB) abundance and composition, and methane oxidation potential in the sediment respond to...

Detecting purging of inbreeding depression by a slow rate of inbreeding for various traits: the impact of environmental and experimental conditions

Mads Fristrup Schou, Jørgen Bundgaard, Volker Loeschcke &
Inbreeding depression (ID) has since long been recognized as a significant factor in evolutionary biology. It is mainly the consequence of (partially) recessive deleterious mutations maintained by mutation-selection balance in large random mating populations. When population size is reduced, recessive alleles are increasingly found in homozygous condition due to drift and inbreeding and become more prone to selection. Particularly at slow rates of drift and inbreeding, selection will be more effective in purging such alleles,...

Data from: Genetic polymorphisms in COMT and BDNF influence synchronization dynamics of human neuronal oscillations

Felix Siebenhühner, Jaana Simola, Vladislav Myrov, Katri Kantojärvi, Tiina Paunio, J. Matias Palva, Elvira Brattico & Satu Palva
Neuronal oscillations, their inter-areal synchronization and scale-free dynamics constitute fundamental mechanisms for cognition by regulating neuronal communication. These oscillatory dynamics have large inter-individual variability that is partly heritable. However, the genetic underpinnings of oscillatory dynamics have remained poorly understood. We investigated whether local and global oscillation dynamics were influenced by polymorphisms in Catechol-O-methyltransferase (COMT) Val158Met and brain-derived neurotrophic factor (BDNF) Val66Met genes that regulate brain catecholaminergic and serotonergic levels. Resting-state magnetoencephalography (MEG) was recorded from...

Ascorbic acid supports ex vivo generation of plasmacytoid dendritic cells from circulating hematopoietic stem cells: RNA-seq dataset

Rasmus Bak & Anders Laustsen
Plasmacytoid dendritic cells (pDCs) constitute a rare type of immune cell with multifaceted functions, but their potential use as a cell-based immunotherapy is challenged by the scarce cell numbers that can be extracted from blood. Here, we systematically investigate culture parameters for generating pDCs from hematopoietic stem and progenitor cells (HSPCs). Using optimized conditions combined with implementation of HSPC pre-expansion, we generate an average of 465 million HSPC-derived pDCs (HSPC-pDCs) starting from 100,000 cord blood-derived...

Data from: Overall dynamic body acceleration measures activity differently on large vs small aquatic animals

Lucía Martina Martín López, Natacha Aguilar De Soto, Peter Teglberg Madsen & Mark Johnson
Acceleration-based proxies for activity and energy expenditure are widely used in bio-logging studies of animal movement and locomotion to explore biomechanical strategies, energetic costs of behaviour, habitat use and the impact of anthropogenic disturbance. The foremost such proxy is Overall Dynamic Body Acceleration (ODBA) along with variants VeDBA and PDBA. This technique, which involves summing the magnitude of high-pass-filtered acceleration signals (the so-called dynamic acceleration) over a reference interval, has been applied to animals as...

Different pollination approaches to compare the seed set of diploid and tetraploid red clover (Trifolium pratense L.)

Shuxuan Jing, Per Kryger & Birte Boelt
In red clover seed production, low seed yield is limiting the commercial exploitation of tetraploid red clover. To explore if pollination is the limiting factor for the seed yield in tetraploid red clover, we investigated pollinator behaviour and plant reproductive success in diploid (2x) cultivar ‘Rajah’ and tetraploid (4x) cultivar ‘Amos’ using honey bee and hand pollination approaches. We measured the seed set at the flower head level with the increasing visitation rate in honey...

Raw cutadapt miseq output - minibarcode 18S-V7 of macroalgae

Sarah Ørberg
Macroalgae are key primary producers in North Atlantic and Arctic coastal ecosystems, and tracing their fate and distribution is vital to improve our understanding of their ecological role and provision of ecosystem services. Recent advances from environmental DNA (eDNA) have added a new capacity to fingerprint and trace macroalgae. However, further development of resources for amplifying and identifying macroalgal eDNA are much needed. Here, we examined the performance in terms of resolution and specificity of...

The biomolecular characterisation of a finger ring contextually dated to the emergence of the Early Neolithic from Syltholm, Denmark

Theis Jensen, Meaghan Mackie, Alberto Taurozzi, Liam Lannigan, Carsten Gundelach, Jesper Olsen, Søren Sørensen, Matthew Collins, Mikkel Sørensen & Hannes Schroeder
We present the analysis of an osseous finger ring from a predominantly early Neolithic context in Denmark. To characterise the artefact and identify the raw material used for its manufacture, we performed micro-computed tomography (Micro CT) scanning, zooarchaeology by mass spectrometry (ZooMS) peptide mass fingerprinting, as well as protein sequencing by liquid chromatography tandem mass spectrometry (LC-MS/MS). We conclude that the ring was made from long bone or antler due to the presence of osteons...

Simulated ice thickness, supraglacial debris thickness and subglacial topography for Khumbu Glacier, Nepal, using the iSOSIA ice-flow model - VERSION 2.0

Ann Rowan & David Egholm
Simulated ice thickness (ice, metres, 100 m grid spacing) and supraglacial debris thickness (debris, metres, 100 m grid spacing) for Khumbu Glacier, Nepal, produced using the iSOSIA ice-flow model presented in Rowan et al. (2021; Journal of Geophysical Research-Earth Surface). The model domains used for the entire glacier and active glacier simulations (metres above sea level, 100 m grid spacing), and the present-day ice thickness estimate (metres, 30 m grid spacing) used to create the...

Decreased precipitation in the late growing season weakens an ecosystem carbon sink in a semiarid grassland

Zhongling Yang, Yueyue Wei, Guangya Fu, Rui Xiao, Ji Chen, Yaojun Zhang, Dong Wang & Junyong Li
1. Net ecosystem gas exchange (NEE), a balance between gross ecosystem primary productivity (GPP) and ecosystem respiration (ER), is an important indicator of terrestrial ecosystem CO2 sink or source. Increasing frequency of droughts during different periods of the growing season may affect terrestrial ecosystem carbon balance. However, detecting how drought timing controls ecosystem carbon processes is insufficiently explored because it is a challenge to accurately monitor and forecast drought dynamics. 2. In a five-year (2015-2019)...

Pollinator visits to six plant species in an oil palm landscape

Candice C. Power, Anders Nielsen & Douglas Sheil
Pollination sustains biodiversity and food security, but pollinators are threatened by habitat degradation, fragmentation and loss. Here we aimed to assess how remaining forests influence bee visits to flowers in an oil palm dominated landscape in Borneo, Indonesia. To do this, we observed pollinator visits to six plant species: four crops (Capsicum frutescens L. “chili”; Citrullus lanatus (Thunb.) Matsum. & Nakai “watermelon”; Solanum lycopersicum L. “tomato”; and Solanum melongena L. “eggplant”); one native plant Melastoma...

Species packing and the latitudinal gradient in local beta-diversity

Ke Cao, Richard Condit, Xiangcheng Mi, Lei Chen, Wubing Xu, David F. R. P. Burslem, Chunrong Cai, Min Cao, Li-Wan Chang, Chengjin Chu, Hu Du, Sisira Ediriweera, C. S. V. Gunatilleke, I. U. A. N. Gunatilleke, Zhanqing Hao, Jinbo Li, Guangze Jin, Buhang Li, Yankun Liu, Yide Li, Michael J. O'Brien, Xiujuan Qiao, Hongwei Ni, Guochun Shen, Xihua Wang … & Jens-Christian Svenning
The decline in species richness at higher latitudes is among the most fundamental patterns in ecology. Whether changes in species composition across space (beta-diversity) contribute to this gradient of overall local species richness (gamma diversity) remains hotly debated. Previous studies that failed to resolve the issue suffered from a well-known tendency for small samples in areas with high gamma-diversity to have inflated measures of beta-diversity. We provide here a novel analytical test, using beta-diversity metrics...

Data from: Effects of climate and topography on the diversity anomaly of plants disjunctly distributed in eastern Asia and eastern North America

Xue Yin, Hong Qian, Xinghua Sui, Minhua Zhang, Lingfeng Mao, Jens-Christian Svenning, Robert E. Ricklefs & Fangliang He
Aim: Differences in physiography have been proposed to explain the diversity anomaly for vascular plants between environmentally similar regions of eastern Asia (EAS) and eastern North America (ENA). Here, we use plant species within disjunct genera to examine whether differences in topography contribute to the diversity anomaly and whether the richness–environment relationships differ between regions. Disjuncts are used to ensure that the diversity anomaly relates to post-disjunction evolution and diversification rather than regional differences in...

Global dryland vegetation memory

Erik Kusch, Alistair W. Seddon & Richard Davy
1. Vegetation memory describes the effect of antecedent environmental and ecological conditions on the present ecosystem state and has been proposed as an important proxy for vegetation resilience. In particular, strong vegetation-memory effects have been identified in dryland regions, but the factors underlying the spatial patterns of vegetation memory remain unknown. 2. We aim to map the components and drivers of vegetation memory in dryland regions using state-of-the-art climate-reanalysis data and refined approaches to identify...

GPS data of little owls

Martin Mayer, Martin Šálek, Anthony Fox, Frej Juhl Lindhøj, Lars Bo Jacobsen & Peter Sunde
Advances in bio-logging technology for wildlife monitoring have expanded our ability to study space use and behavior of many animal species at increasingly detailed scales. However, such data can be challenging to analyze due to autocorrelation of GPS positions. As a case study, we investigated spatiotemporal movements and habitat selection in the little owl (Athene noctua), a bird species that is declining in central Europe and verges on extinction in Denmark. We equipped 6 Danish...

The role of deterministic succession during forest succession within a South African savanna

Samantha-Leigh Jamison-Daniels, Daniel Kissling, Monique Botha, Mathew Harris, Christopher Gordon & Michelle Greve
Bush encroachment can lead to a switch from open savannas to dense woodlands or forests. This has implications for both the composition of ecological communities and the provision of ecosystem services such as nutrient cycling and grazing capacity. The patterns and underlying drivers responsible for bush encroachment are not fully understood. Here, we investigate the underlying determinants of bush clump formation (a form of encroachment) in a South African savanna and explore whether bush clump...

Population ecology and dynamics of a remnant natural population of European yew (Taxus baccata) in a lowland temperate forest – implications for use in reforestation

Ditte Arp Jensen & Jens-Christian Svenning
There is increasing focus on reforestation, but the efforts still often include limited subsets of species despite evidence that tree diversity promote biodiversity and ecological resilience. In addition to these benefits, greater inclusion of rare native species in reforestation efforts would also help conserve these species in an uncertain future. Here, we investigate the population ecology and dynamics of the only remaining historical population of the shade-adapted under- and mid-story tree European yew (Taxus baccata)...

Dataset for estimation of the biotic and climatic niche breadths and geographic range size of beech (Fagus) species worldwide

Qiong Cai, Erik Welk, Chengjun Ji, Wenjing Fang, Francesco Maria Sabatini, Jianxiao Zhu, Jiangling Zhu, Zhiyao Tang, Fabio Attorre, Juan Antonio Campos, Andraž Čarni, Milan Chytrý, Süleyman Çoban, Jürgen Dengler, Jiri Dolezal, Richard Field, József Pál Frink, Hamid Gholizadeh, Adrian Indreica, Ute Jandt, Dirk Nikolaus Karger, Jonathan Lenoir, Robert K. Peet, Remigiusz Pielech, Michele De Sanctis … & Helge Bruelheide
This dataset could be used to test whether the commonly observed positive range size–niche breadth relationship, as posited by the “niche breadth hypothesis”, exists for Fagus, one of the most dominant and widespread broad‐leaved deciduous tree genera in temperate forests of the Northern Hemisphere. There are many ways to estimate niche breadth. Here, we estimated biotic and climatic niche breadths per species using plot‐based co‐occurrence data and climate data, respectively. The range sizes of the...

Seasonal turnover in community composition of stream-associated macroinvertebrates inferred from freshwater environmental DNA metabarcoding

Mads Reinholdt Jensen, Eva Egelyng Sigsgaard, Sune Agersnap, Jes Jessen Rasmussen, Annette Baattrup-Pedersen, Peter Wiberg-Larsen & Philip Francis Thomsen
Macroinvertebrate communities are crucial for biodiversity monitoring and assessment of ecological status in stream ecosystems. However, traditional monitoring approaches require intensive sampling and rely on invasive morphological identifications that are time consuming and dependent on taxonomic expertise. Importantly, sampling is often only carried out once in a year, namely during late winter – spring, where most indicator taxa have larval stages in the streams. Hence, species with divergent phenology might not be detected. Here, we...

Large herbivore biomass in protected areas

Camilla Fløjgaard, Pil Birkefeldt Møller Pedersen, Christopher Sandom, Jens-Christian Svenning & Rasmus Ejrnæs
Large herbivores provide key ecosystem processes, but have experienced massive historical losses and are under intense pressure, leaving current ecosystems with dramatically simplified faunas relative to the long-term evolutionary norm. Hampered by a shifting baseline, natural levels of large-herbivore biomass are poorly understood and seldom targeted. Here, we present a collation of large-herbivore biomass data from published sources as well as personal communication. The data includes continent, ecosystem name, latitude, longitude, large herbivore biomass in...

Effects of episodic nutrients enrichments on P-limited planktonic communities: Lake Redon ENEX 2013 experiment

Jordi Catalan, Marisol Felip, Pau Giménez-Grau, Aitziber Zufiaurre, Lluis Camarero & Sergi Pla-Rabés
Planktonic communities are naturally subjected to episodic nutrient enrichments that may stress or redress the imbalances in limiting nutrients. Human-enhanced atmospheric nitrogen deposition has caused profound N:P imbalance in many remote oligotrophic lakes in which phosphorus has largely become limiting. These lakes offer an opportunity to investigate the planktonic community response to nutrient fluctuations in P-limited conditions. The ENEX experiment in Lake Redon (Pyrenees), performed during August 2013, aimed to investigate the structural and stoichiometric...

Global maps of current (1979-2013) and future (2061-2080) habitat suitability probability for 1,485 European endemic plant species

Robin Pouteau, Idoia Biurrun, Caroline Brunel, Milan Chytrý, Wayne Dawson, Franz Essl, Trevor Fristoe, Rense Haveman, Carsten Hobohm, Florian Jansen, Holger Kreft, Jonathan Lenoir, Bernd Lenzner, Carsten Meyer, Jesper Erenskjold Moeslund, Jan Pergl, Petr Pyšek, Jens-Christian Svenning, Wilfried Thuiller, Patrick Weigelt, Thomas Wohlgemuth, Qiang Yang & Mark Van Kleunen
Aims: The rapid increase in the number of species that have naturalized beyond their native range is among the most apparent features of the Anthropocene. How alien species will respond to other processes of future global changes is an emerging concern and remains largely misunderstood. We therefore ask whether naturalized species will respond to climate and land-use change differently than those species not yet naturalized anywhere in the world. Location: Global Methods: We investigated future...

Deer-vehicle collisions in Denmark

Martin Mayer, Jacob Coleman Nielsen, Morten Elmeros & Peter Sunde
Vehicles collide with hundreds of thousands of deer on European roads each year. This leads to animal deaths and suffering, economic damage and risks for human safety, making the reduction of road mortality a major field in conservation biology. In order to successfully reduce roadkill, we need improved knowledge regarding spatio-temporal patterns of deer-vehicle collisions (DVCs) on a landscape scale. Here, we analyzed >85,000 DVCs collected over 17 years in Denmark to investigate changes in...

Registration Year

  • 2021

Resource Types

  • Dataset


  • Aarhus University
  • University of Helsinki
  • University of La Laguna
  • University of Copenhagen
  • University of the Basque Country
  • Sun Yat-sen University
  • Zhejiang University
  • Lund University
  • University of Groningen
  • University of Nottingham