12 Works

Data from: Asymmetric interactions and their consequences for vital rates and dynamics: the smaller tea tortrix as a model system

William A. Nelson, Barbara Joncour, Dami Pak & Ottar N. Bjørnstad
Asymmetric interactions among conspecifics can have diverse effects on population dynamics including stabilization, generation of cycles and induction of chaotic fluctuations. A difficult challenge, however, is establishing the link between the impact of asymmetric interactions on life history and the consequences for population dynamics. The smaller tea tortrix, Adoxophyes honmai, is a good example. Larval instars differ dramatically in size and have a tendency for cannibalism, which suggests the potential for strong asymmetric interactions among...

Data from: Resident species with larger size metrics do not recruit more offspring from the seed bank in old-field meadow vegetation

Amanda Tracey & Lonnie Aarssen
1. According to the traditional ‘Size Advantage’ (SA) hypothesis, plant species with larger body size are expected to be more successful when competition is intense, i.e. within severely crowded vegetation. Recent studies in old-field habitats, however, have shown that those species with greater numerical abundance as resident plants generally have a relatively small minimum reproductive threshold size (MIN), not a relatively large maximum potential body size (MAX). 2. In this study, we test for a...

Data from: Genetic structure and diversity among historic and modern populations of the Sumatran rhinoceros (Dicerorhinus sumatrensis)

Jessica R. Brandt, Peter J. Van Coeverden De Groot, Kelsey E. Witt, Paige K. Engelbrektsson, Kristofer M. Hegen, Ripan S. Malhi, Oliver A. Ryder, Alfred L. Roca & Kristofer M Helgen
The Sumatran rhinoceros (Dicerorhinus sumatrensis), once widespread across Southeast Asia, now consists of as few as 30 individuals within Sumatra and Borneo. To aid in conservation planning, we sequenced 218 bp of control region mitochondrial (mt) DNA, identifying 17 distinct mitochondrial haplotypes across modern (N = 13) and museum (N = 26) samples. Museum specimens from Laos and Myanmar had divergent mtDNA, consistent with the placement of western mainland rhinos into the distinct subspecies D....

Data from: Species interactions limit the occurrence of urban-adapted birds in cities

Paul R. Martin & Frances Bonier
Urbanization represents an extreme transformation of more natural systems. Populations of most species decline or disappear with urbanization, and yet some species persist and even thrive in cities. What determines which species persist or thrive in urban habitats? Direct competitive interactions among species can influence their distributions and resource use, particularly along gradients of environmental challenge. Given the challenges of urbanization, similar interactions may be important for determining which species persist or thrive in cities;...

Data from: Competition between co-occurring invasive and native consumers switches between habitats

Nadescha Zwerschke, Henk Van Rein, Chris Harrod, Carl Reddin, Mark C. Emmerson, Dai Roberts, Nessa E. O'Connor & Henk Rein
1. The introduction of a non-native species frequently has adverse direct effects on native species. The underlying mechanisms, however, often remain unclear, in particular where native and invasive species are taxonomically similar. 2. We found evidence of direct competitive interactions between a globally distributed invasive species (the Pacific oyster, Magallana gigas) and its native counterpart (the European oyster, Ostrea edulis). We also discovered that the competitive outcome differed between different habitat types and structures by...

Data from: Soil organic carbon dynamics matching ecological equilibrium theory

Tancredi Caruso, Franciska T. De Vries, Richard D. Bardgett & Johannes Lehmann
The persistence of soil organic carbon (SOC) has traditionally been explained as a combination of recalcitrance properties and stabilization processes, which lead to the formation of complex organic compounds. However, recent conceptual advances and experimental evidence challenge this view. Here, we test these conceptual advances using a dynamic equilibrium theory of SOC founded on classic ecological theory. We postulate that the persistence of SOC is an equilibrium point where SOC losses resulting from continuous decomposition...

Data from: Lack of spatial structure for phenotypic and genetic variation despite high self-fertilization in Aquilegia canadensis (Ranunculaceae)

Magdalena P. Bartkowska, Andy Y-C Wong, Stephen P. Sagar, Lily Zeng & Christopher G. Eckert
By reducing genetically effective population size and gene flow, self-fertilization should lead to strong spatial genetic structure (SGS). Although the short-lived plant Aquilegia canadensis produces large, complex, nectar-rich flowers, 75% of seed, on average, are self-fertilized. Previous experimental results are consistent with the fine-scale SGS expected in selfing populations. In contrast, key floral traits show no evidence of SGS, despite a significant genetic basis to phenotypic variation within populations. In this study, we attempt to...

Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces

Tim R. Birkhead, Jamie E. Thompson & Robert Montgomerie
The adaptive significance of avian egg shape is a long-standing problem in biology. For many years, it was widely believed that the pyriform shape of the Common Murre (Uria aalge) egg allowed it to either “spin like a top” or “roll in an arc,” thereby reducing its risk of rolling off the breeding ledge. There is no evidence in support of either mechanism. Two recent alternative hypotheses suggest that a pyriform egg confers mechanical strength...

Data from: Differential impacts of vaccination on wildlife disease spread during epizootic and enzootic phases

Erica J. Newton, Bruce A. Pond, Rowland R. Tinline, Kevin Middel, Denise Belanger & Erin E. Rees
1. Dissemination of oral vaccine baits is a cost-effective method to contain and control infectious wildlife diseases. The effectiveness of vaccine barriers in slowing or halting the disease spread depends on host ecology and landscape variability. It is not clear, however, how the success of vaccine barriers to manage disease may change from an epizootic to an enzootic phase of a disease invasion, and if this depends on the quality and configuration of host habitat....

Data from: The effect of static versus dynamic stimuli on visual processing of sexual cues in androphilic women and gynephilic men

Samantha J. Dawson & Meredith L. Chivers
Models of sexual response posit that attentional processing of sexual cues is requisite for sexual responding. Despite hypothesized similarities in the underlying processes resulting in sexual response, gender differences in sexual arousal patterns are abundant. One such gender difference relates to the stimulus features (e.g., gender cues, sexual activity cues) that elicit a response in men and women. In the current study, we examined how stimulus modality (static visual images versus dynamic audiovisual films) and...

Data from: Integrating morphological characters, molecular markers, and distribution patterns to assess the identity of Blepharis species from Jordan

Riyadh Muhaidat, Mohammad H. Brake, Mazhar Al Zoubi, Robert I. Colautti, Amjad Al-Nasser, Muheeb Awawdeh, Khaled Al-Batayneh, Wesam Al Khateeb, Athena D. McKown, Jamil Lahham & Ahmad El-Oqlah
Background: Blepharis constitutes an important vegetative part of the Jordanian arid and semi-arid regions, yet whether one or more species occurs in this area is debatable. We addressed this question by assessing morphological characters and employing Inter-Simple Sequence Repeat (ISSR) markers on three populations of Blepharis: two Northern (lower slopes of Kufranjah valley and the Dead Sea region) and one Southern (Wadi al Yutm). Results: Shoots from 19 randomly chosen Blepharis plants per population were...

Data from: Local adaptation primes cold-edge populations for range expansion but not warming-induced range shifts

Anna L. Hargreaves, Chris G. Eckert & Christopher G. Eckert
According to theory, edge populations may be poised to expand species’ ranges if they are locally adapted to extreme conditions, or ill-suited to colonize beyond-range habitat if their offspring are genetically and competitively inferior. We tested these contrasting predictions by transplanting low, mid, and high-elevation (edge) populations of an annual plant throughout and above its elevational distribution. Seed from poor-quality edge habitat had inferior emergence, but edge seeds were also locally adapted. High-elevation plants flowered...

Registration Year

  • 2018

Resource Types

  • Dataset


  • Queen's University
  • Yarmouk University
  • University of Adelaide
  • Queen's University Belfast
  • University of Montreal
  • Trinity College
  • Marian University
  • McGill University
  • British Antarctic Survey
  • Public Health Agency of Canada