10 Works

Inbreeding and disease avoidance in a free‐ranging koala population

Anthony Schultz, Romane H. Cristescu, Jon Hanger, Jo Loader & Celine H. Frère
Habitat destruction and fragmentation are increasing globally, forcing surviving species into small, isolated populations. Isolated populations typically experience heightened inbreeding risk, and associated inbreeding depression and population decline; although individuals in these populations may mitigate these risks through inbreeding avoidance strategies. For koalas, as dietary specialists already under threat in the northern parts of their range, increased habitat fragmentation and associated inbreeding costs are of great conservation concern. Koalas are known to display passive inbreeding...

Forest diversity and structure in regenerating secondary forests after shifting cultivation abandonment in the Philippines uplands

Sharif Mukul, John Herbohn & Jennifer Firn
We investigated parameters of forest diversity and structure along a fallow age gradient in secondary forests regenerating after shifting cultivation abandonment. We first measured the tree diversity and forest structure indices in regenerating secondary forests and old-growth forest. We then measured the recovery of tree diversity and forest structure parameters in relation to the old-growth forest. Finally, using linear mixed effect models (LMM), we assessed the effect of different environmental variables on the recovery of...

Genomic evidence of introgression and adaptation in a model subtropical tree species, Eucalyptus grandis

Marja Mostert-O'Neill, Sharon Reynolds, Juan Acosta, David Lee, Justin Borevitz & Alexander Myburg
The genetic consequences of adaptation to changing environments can be deciphered using landscape genomics, which may help predict species’ responses to global climate change. Towards this, we used genome-wide SNP marker analysis to determine population structure and patterns of genetic differentiation in terms of neutral and adaptive genetic variation in the natural range of Eucalyptus grandis, a widely cultivated subtropical and temperate species, serving as genomic reference for the genus. We analysed introgression patterns at...

Data from: Can dominance genetic variance be ignored in evolutionary quantitative genetic analyses of wild populations?

Barbara Class & Jon Brommer
Accurately estimating genetic variance components is important for studying evolution in the wild. Empirical work on domesticated and wild outbred populations suggests that dominance genetic variance represents a substantial part of genetic variance, and theoretical work predicts that ignoring dominance can inflate estimates of additive genetic variance. Whether this issue is pervasive in natural systems is unknown, because we lack estimates of dominance variance in wild populations obtained in situ. Here, we estimate dominance and...

Data from: Fitness benefits of male dominance behaviours depend on the degree of inbreeding in a polyandrous lizard

C Piza-Roca, D Schoeman & C Frere
In polyandrous species, sexual selection extends beyond mating competition to selection for egg fertilization. As a result, the degree to which factors influencing mating success impact overall reproductive success becomes variable. Here, we used a longitudinal behavioural and genetic dataset for a population of eastern water dragons (Intellagama lesueurii) to investigate the degree to which male dominance, a pre-mating selection trait, influences overall reproductive success, measured as the number of surviving offspring. Moreover, we examine...

Higher sociability leads to lower reproductive success in female kangaroos

Alecia Carter, Clementine Menz, Best Emily, Natalie Freeman, Ross Dwyer, Simone Blomberg & Anne Goldizen
In social mammals, social integration is generally assumed to improve females’ reproductive success. Most species demonstrating this relationship exhibit complex forms of social bonds and interactions. However, female eastern grey kangaroos (Macropus giganteus) exhibit social preferences, yet do not appear to cooperate directly. It is unclear what the fitness consequences of sociability could be in species that do not exhibit obvious forms of cooperation. Using four years of life history, spatial, and social data from...

Collision between biological process and statistical analysis revealed by mean-centering

David Westneat, Yimen Araya-Ajoy, Hassen Allegue, Barbara Class, Niels Dingemanse, Ned Dochtermann, Laszlo Garamszegi, Julien Martin, Shinichi Nakagawa, Denis Reale & Holger Schielzeth
1. Animal ecologists often collect hierarchically-structured data and analyze these with linear mixed-effects models. Specific complications arise when the effect sizes of covariates vary on multiple levels (e.g., within vs among subjects). Mean-centering of covariates within subjects offers a useful approach in such situations, but is not without problems. 2. A statistical model represents a hypothesis about the underlying biological process. Mean-centering within clusters assumes that the lower level responses (e.g. within subjects) depend on...

Using genomics to optimise and evaluate the performance of underwater forest restoration

Georgina Wood, Ezequiel M. Marzinelli, Adriana Verges, Alexandra Campbell, Peter Steinberg & Melinda Coleman
1. Restoration is an emerging intervention to reverse the degradation and loss of marine habitat-formers and the ecosystem services they underpin. Current best practice seeks to restore populations by transplanting donor individuals chosen to replicate genetic diversity and structure of extant, nearby populations. However, genetic characteristics are rarely empirically examined across generations, despite their potential role in influencing restoration success. 2. We used genomics to design a restoration program for lost underwater forests of Phyllospora...

Raw data accompanying: Ground reaction forces in monitor lizards (Varanidae) and the scaling of locomotion in sprawling tetrapods

Robert Cieri, Dick Taylor, Robert Irwin, Daniel Rumsey & Christofer Clemente
Geometric scaling predicts a major challenge for legged, terrestrial locomotion. Locomotor support requirements scale identically with body mass (α M1), while force generation capacity should scale α M2/3 as it depends on muscle cross-sectional area. Mammals compensate with more upright limb postures at larger sizes, but it remains unknown how sprawling tetrapods deal with this challenge. Varanid lizards are an ideal group to address this question because they cover an enormous body size range while...

CaTeNA – Climatic and Tectonic Natural Hazards in Central Asia Final virtual workshop September 24-25 2020

Natalie Barbosa, Wasja Bloch, Silvia Crosetto, Christian Haberland, Ben Jarihani, Najibullah Kakar, Sabrina Metzger, Solmaz Mohadjer, Sagynbek Orunbaev, Lothar Ratschbacher, Bernd Schurr, Manfred Strecker & Xun Wang
CaTeNA – Climatic and Tectonic Natural Hazards in Central Asia – is an interdisciplinary, international project funded by the German Ministry of Education and Research to study natural hazards in Central Asia. Central Asia is one of the most tectonically active regions of the world and is influenced by both the west wind zone and monsoon. CaTeNA is examining the two most serious natural hazards arising from these conditions: Earthquakes and mass movements. The project...

Registration Year

  • 2020
    10

Resource Types

  • Dataset
    9
  • Text
    1

Affiliations

  • University of the Sunshine Coast
    10
  • University of Queensland
    2
  • UNSW Sydney
    2
  • University of Quebec at Montreal
    1
  • Central-Asian Institute for Applied Geosciences
    1
  • University of Pretoria
    1
  • Australian National University
    1
  • Helmholtz-Zentrum Dresden-Rossendorf
    1
  • Australia Zoo
    1
  • Bielefeld University
    1