115 Works

Data from: The value of trophic interactions for ecosystem function: dung beetle communities influence seed burial and seedling recruitment in tropical forests

Hannah M. Griffiths, Richard D. Bardgett, Julio Louzada & Jos Barlow
Anthropogenic activities are causing species extinctions, raising concerns about the consequences of changing biological communities for ecosystem functioning. To address this, we investigated how dung beetle communities influence seed burial and seedling recruitment in the Brazilian Amazon. First, we conducted a burial and retrieval experiment using seed mimics. We found that dung beetle biomass had a stronger positive effect on the burial of large than small beads, suggesting that anthropogenic reductions in large-bodied beetles will...

Data from: Mass extinctions over the last 500 myr: an astronomical cause?

Anatoly D. Erlykin, David A. T. Harper, Terry Sloan & Arnold W. Wolfendale
A Fourier analysis of the magnitudes and timing of the Phanerozoic mass extinctions (MEs) demonstrates that many of the periodicities claimed in other analyses are not statistically significant. Moreover we show that the periodicities associated with oscillations of the Solar System about the galactic plane are too irregular to give narrow peaks in the Fourier periodograms. This leads us to conclude that, apart from possibly a small number of major events, astronomical causes for MEs...

Data from: Plant, soil and microbial controls on grassland diversity restoration: a long-term, multi-site mesocosm experiment

Ellen L. Fry, Emma S. Pilgrim, Jerry R.B. Tallowin, Roger S. Smith, Simon R. Mortimer, Deborah A. Beaumont, Janet Simkin, Stephanie J. Harris, Robert S. Shiel, Helen Quirk, Kate A. Harrison, Clare S. Lawson, Phil A. Hobbs & Richard D. Bardgett
The success of grassland biodiversity restoration schemes is determined by many factors; as such their outcomes can be unpredictable. There is a need for improved understanding of the relative importance of belowground factors to restoration success, such as contrasting soil type and management intensities, as well as plant community composition and order of assembly. We carried out an eight-year mesocosm experiment across three locations in the UK to explore the relative and interactive roles of...

Data from: Transgenerational effects modulate density-dependent prophylactic resistance to viral infection in a lepidopteran pest

Kenneth Wilson & Robert I. Graham
There is an increasing appreciation of the importance of transgenerational effects on offspring fitness, including in relation to immune function and disease resistance. Here, we assess the impact of parental rearing density on offspring resistance to viral challenge in an insect species expressing density-dependent prophylaxis (DDP); i.e. the adaptive increase in resistance or tolerance to pathogen infection in response to crowding. We quantified survival rates in larvae of the cotton leafworm (Spodoptera littoralis) from either...

Data from: Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic

Anja Morven Carlsson, Steve D. Albon, Stephen J. Coulson, Erik Ropstad, Audun Stien, Ken Wilson, Leif Egil Loe, Vebjørn Veiberg, Robert Justin Irvine & Kenneth Wilson
1.Macroparasites have a central place in wildlife ecology because they have the potential to regulate host populations through effects on reproduction and/or survival. However, there remains a paucity of studies that have demonstrated the regulatory role of these parasites in free-ranging animals. 2.Previous work on Svalbard reindeer demonstrated that the experimental removal of the parasitic gastrointestinal nematode Ostertagia gruehneri transmitted in summer, improved reindeer fecundity, and that the species was capable of mediating a density-dependent...

Data from: Dynamics of macronutrient self-medication and illness-induced anorexia in virally-infected insects

Sonia Povey, Kenneth Wilson, Sheena C. Cotter & Stephen J. Simpson
1. Some animals change their feeding behaviour when infected with parasites, seeking out substances that enhance their ability to overcome infection. This “self-medication” is typically considered to involve the consumption of toxins, minerals or secondary compounds. However, recent studies have shown that macronutrients can influence the immune response, and that pathogen-challenged individuals can self-medicate by choosing a diet rich in protein and low in carbohydrates. Infected individuals might also reduce food intake when infected (i.e....

Data from: On potential ocular artefacts in infant electroencephalogram: a reply to comments by Köster

Dora Kampis, Eugenio Parise, Gergely Csibra & Ágnes M. Kovács
Dataset for Kampis, Parise, Csibra, & Kovacs (2016)EEG Dataset for article "On potential ocular artifacts in infant EEG: A reply to comments by Köster"dataset_reply_to_comment_procb_kampisetal.xls

Data from: Endemic infection reduces transmission potential of an epidemic parasite during co-infection

Joanna Randall, Joanne Cable, Irina A. Guschina, John L. Harwood & Joanne Lello
Endemic, low-virulence parasitic infections are common in nature. Such infections may deplete host resources, which in turn could affect the reproduction of other parasites during co-infection. We aimed to determine whether the reproduction, and therefore transmission potential, of an epidemic parasite was limited by energy costs imposed on the host by an endemic infection. Total lipids, triacylglycerols (TAG) and polar lipids were measured in cockroaches (Blattella germanica) that were fed ad libitum, starved or infected...

Data from: Mesoclosures – increasing realism in mesocosm studies of ecosystem functioning

Saija Lähteenmäki, Eleanor M. Slade, Bess Hardwick, Gustavo Schiffler, Júlio Louzada, Jos Barlow & Tomas Roslin
1. Experimental studies linking community composition to functioning are typically confined to small and closed micro- or mesocosms. Such restricted conditions may affect both species’ biology and their environment. Yet, targeting simple features in the behaviour of species may circumvent these constraints. Focusing on ecological functions provided by dung beetles, we test whether large, open-top cages – MESOCLOSURES – will intercept the flight trajectories of beetles, thereby allowing manipulation of local community composition. 2. MESOCLOSURES...

Hampshire Avon: Vertical head gradient, saturated hydraulic conductivity and pore water chemistry data from six river reaches

C. M. Heppell & A. Binley
This dataset contains measurements of hydraulic head and saturated hydraulic conductivity together with porewater chemistry from banks and riverbed sediments in six river reaches of contrasting geology (clay, sand, chalk) in the Hampshire Avon. Falling and rising (slug) test data were used for computation of saturated hydraulic conductivity. Hydraulic head measurements were obtained from pressure transducers installed in piezometers between Summer 2013 and Summer 2015. Samples for porewater chemical analysis were collected from porewater sampling...

Concentrations of polybrominated diphenyl ethers (PBDE) in UK sparrowhawk (Accipiter nisus) livers. Data from the Predatory Bird Monitoring Scheme (PBMS)

J. Crosse, R. Shore, K. Jones & M. G. Pereira
Data on concentrations of PBDEs found in the livers of 59 sparrowhawks that had died in the UK between 1998 and 2009. Samples were selected from the Predatory Bird Monitoring Scheme (PBMS) Archive. Archived livers from birds that had died between 1998 and 2009 from central England, directly east and within 250 km of the Welsh border, were analysed. Data are presented as one table and two supporting files containing metadata. The Predatory Bird Monitoring...

Radial stem growth of stems in human-modified forests of Eastern Amazonia

E. Berenguer, L. C. Rossi, M.M.M. Seixas & J. Barlow
This dataset includes measurements of stem radial growth in 20 plots (250 x 10 m each) in the Brazilian Amazon. Study plots were distributed across a gradient of forest disturbance, including: undisturbed primary forests , logged primary forests, logged-and-burned primary forests, and secondary forests. Data were collected from December 2014 until October 2018. In December 2015, during the El Niño-mediated drought, eight of our study plots were affected by understory fires.

Boreal forest floor greenhouse gas emissions across a wildfire-disturbed chronosequence

K.E. Mason, S. Oakley, L.E. Street, M. Arróniz-Crespo, D.L. Jones, T.H. DeLuca & N.J. Ostle
Data collected during field experiments to investigate the effect of wildfires on greenhouse gas emissions across forests of differing ages in Sweden. Data comprise greenhouse gas measurements, soil horizon depth, bulk density, loss on ignition, pH, soil phosphorus, carbon and nitrogen, plant species cover, air temperature, soil temperature, soil moisture and surface leaf moisture. Greenhouse gas measurements were taken in the field. Soil cores were collected, then processed and analysed in the laboratory. Plant species...

Ecosystem functions and vegetation data for Winklebury Hill, Salisbury Plain, UK 2016

E.L. Fry, A.L. Hall, J. Savage, R.D. Bardgett, N. Ostle, R.F. Pywell, J.M. Bullock, S. Oakley, R. Griffiths, R. McDonald, T. Caruso & M. Ilardi
This dataset contains vegetation survey data, and nitrate and ammonium concentrations, nitrification and mineralisation rates, microbial biomass and carbon and nitrogen stock data from soils taken from an experiment based at Winklebury Hill, UK. The vegetation survey comprises total species percentage cover and species richness data from four 50 cm by 50 cm quadrats. Net ecosystem carbon dioxide exchange, photosynthesis and respiration data were measured with an Infra-red Gas Analyser (IRGA); methane, carbon dioxide and...

Dung beetle abundance data from a before-and-after El Niño experiment in the Brazilian Amazon

F.M. França, V.H. Oliveira, J.N.C. Louzada, F.Z. Vaz-De-Mello, J.N Ferreira, E. Berenguer, T. Gardner, A. Lees & J. Barlow
This data set includes longitudinal abundance of dung beetles at dung-baited pitfall traps, recorded in 2010, 2016 and 2017 (around six years before, six months after and 18 months after the 2015-16 El Niño event, respectively) in the Brazilian Amazon region. Dung beetles were collected during the collaborative projects AFIRE (Assessing ENSO-induced Fire Impacts in tropical Rainforest Ecosystems) and ECOFOR (Biodiversity and Ecosystem Functioning in degraded and recovering Amazonian and Atlantic Forests), which are part...

Daily rainfall, stream discharge and hydraulic conductivity of soils from catchments dominated by different vegetation types, Western Ghats, India, 2014-2016

R.S. Bhalla, J. Krishnsawamy, N.A. Chappell, K. Kumaran, S. Vaidyanathan, R. Nayak & P. Ghatwai
Data are presented for daily rainfall, stream discharge and hydraulic conductivity of soils from catchments located in the Upper Nilgiris Reserve Forest in the state of Tamil Nadu. The catchments are dominated by four land cover types, shola, grassland, pine and wattle. The data were collected between May 2014 and December 2016. Tipping bucket wired rain gauges were used to measure rainfall. Stream discharge was measured from stilling wells and capacitance probe-based water level recorders....

Concentrations of polybrominated diphenyl ethers (PBDEs) in sparrowhawk (Accipiter nisus) eggs in the UK

J. Crosse, R. Shore, R. Wadsworth, K. Jones & M. G. Pereira
Data on long term trends in Polybrominated diphenyl ethers (PBDEs) in sparrowhawk (Accipiter nisus) eggs. Samples were selected from the Predatory Bird Monitoring Scheme (PBMS) Archive. Failed or abandoned sparrowhawk eggs were taken from nests by licensed egg collectors and archived as part of the monitoring activities of the PBMS in the UK. The period studied was 1985 to 2007. Data are presented in three tables including detected PBDEs, interpolated PBDEs and sample properties which...

Plant biomass, soil conditions and stable isotope concentrations in soil, roots and shoots from a microcosm experiment [NERC Soil Biodiversity Programme]

L. Cole, P.L. Staddon, D. Sleep & R.D. Bardgett
Data collected include: plant (shoot and root) biomass, a range of soil conditions including mycorrhizal abundance, microbial biomass carbon & nitrogen, soil extractable ammonia, soil extractable nitrate, soil extractable phosphate, total nitrogen content of soil and the presence of selected mite and collembolan species, and measurements associated with stable isotopes (ratio of isotopes of nitrogen in soil, roots and shoots, total carbon content of roots and shoots, ratio of isotopes of carbon in roots, total...

Tsetse (Glossina morsitans morsitans) count data from Eastern Province, Zambia, (2013)

N.E. Anderson, G. Mulenga, J. Mashili, M. Simuunza, N. Machila, P.M. Atkinson & S.C. Welburn
This resource contains tsetse fly count data recorded during two intensive surveys in Mambwe District, Eastern Province, Zambia in 2013. Tsetse sampling was conducted along a 60 kilometre transect from the plateau region on the eastern side of the Luangwa Valley to the floor of the valley, near Mfuwe Airport. Tsetse flies were sampled using black screen fly rounds. The first survey was conducted in May and June (cold, dry season) and the second survey...

Data from: Regime shifts shorten food chains for mesopredators with potential sublethal effects

Tessa N. Hempson, Nicholas A.J. Graham, Aaron M. MacNeil, Nathalie Bodin, Shaun K. Wilson & Nicholas A. J. Graham
1. Predator populations are in decline globally. Exploitation, as well as habitat degradation and associated changes in prey availability are key drivers of this process of trophic downgrading. In the short term, longevity and dietary adaptability of large-bodied consumers can mask potential sub-lethal effects of a changing prey base, producing a delayed effect that may be difficult to detect. 2. In coral reef ecosystems, regime shifts from coral- to algae-dominated states caused by coral bleaching...

Data from: Pest tradeoffs in technology: reduced damage by caterpillars in Bt cotton benefits aphids

Steffen Hagenbucher, Felix L. Wäckers, Felix E. Wettstein, Dawn M. Olson, John R. Ruberson, Jörg Romeis & F. L. Wackers
The rapid adoption of genetically engineered (GE) plants that express insecticidal Cry proteins derived from Bacillus thuringiensis (Bt) has raised concerns about their potential impact on non-target organisms. This includes the possibility that non-target herbivores develop into pests. Although studies have now reported increased populations of non-target herbivores in Bt cotton, the underlying mechanisms are not fully understood. We propose that lack of herbivore-induced secondary metabolites in Bt cotton represents a mechanism that benefits non-target...

Data from: Decomposition of coarse woody debris in a long-term litter manipulation experiment: a focus on nutrient availability

Evan M. Gora, Emma J. Sayer, Benjamin L. Turner & Edmund V. J. Tanner
1.The majority of aboveground carbon in tropical forests is stored in wood, which is returned to the atmosphere during decomposition of coarse woody debris. However, the factors controlling wood decomposition have not been experimentally manipulated over time scales comparable to the length of this process. 2.We hypothesized that wood decomposition is limited by nutrient availability and tested this hypothesis in a long-term litter addition and removal experiment in a lowland tropical forest in Panama. Specifically,...

Data from: Is environmental legislation conserving tropical stream faunas? a large-scale assessment of local, riparian and catchment-scale influences on Amazonian stream fish

Cecília G. Leal, Jos Barlow, Toby Gardner, Robert M. Hughes, Rafael P. Leitão, Ralph Mac Nally, Philip R. Kaufmann, Silvio F. B. Ferraz, Jansen Zuanon, Felipe R. De Paula, Joice Ferreira, James R. Thomson, Gareth D. Lennox, Eurizângela P. Dary, Cristhiana P. Röpke, Paulo S. Pompeu & Toby A. Gardner
1.Agricultural expansion and intensification are major threats to tropical biodiversity. In addition to the direct removal of native vegetation, agricultural expansion often elicits other human-induced disturbances, many of which are poorly addressed by existing environmental legislation and conservation programmes. This is particularly true for tropical freshwater systems, where there is considerable uncertainty about whether a legislative focus on protecting riparian vegetation is sufficient to conserve stream fauna. 2.To assess the extent to which stream fish...

Data from: Fewer new species colonize at low frequency N addition in a temperate grassland

Yunhai Zhang, Carly J. Stevens, Xiaotao Lü, Nianpeng He, Jianhui Huang & Xingguo Han
1. Biologically reactive nitrogen (Nr) enrichment threatens biodiversity in diverse ecosystems. Previous controlled N addition experiments may overestimate the effects of atmospheric Nr deposition on the rate of species loss, as it has been found that low frequency Nr additions, as used in traditional studies, lead to more rapid biodiversity loss. It remains unclear, however, whether the colonization of new species (gain) or extinction of old species (loss) is the cause of this difference. 2....

Data from: Dietary niche constriction when invaders meet natives: evidence from freshwater decapods

Michelle C. Jackson, Jonathan Grey, Katie Miller, J. Robert Britton & Ian Donohue
1. Invasive species are a key driver of global environmental change, with frequently strong negative consequences for native biodiversity and ecosystem processes. Understanding competitive interactions between invaders and functionally similar native species provides an important benchmark for predicting the consequences of invasion. However, even though having a broad dietary niche is widely considered a key factor determining invasion success, little is known about the effects of competition with functionally similar native competitors on the dietary...

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