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Thomas GH

As seen in: PeerJ
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Articles by Thomas GH

Improving taxonomic resolution, biomass and abundance assessments of aquatic invertebrates by combining imaging and DNA megabarcoding

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By Gregory RD, Thomas GH, Taylor GW, Lee WT
| PeerJ
Benthic macroinvertebrate samples were taken from an outdoor mesocosm experiment, following the ExStream design of Piggott et al. (2015). The experiment was conducted from 6 March to 11 April 2022 at the Boye river in North Rhine-Westphalia, Germany (lat, lon: 51.5533 N, 6.9485 E). Field permit for conducting the ExStream experiment was obtained from the Lower Nature Conservation Authority, Department of the Environment and Greenery, City of Bottrop, Germany.
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Ex-situ avian sex skews: determinants and implications for conservation

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By Elliott GP, Thomas GH, Pearce-Kelly P, Brooke MDL
| PeerJ
Ex-situ avian sex skews: determinants and implications for conservation 1School of Science and Engineering, University of the Sunshine Coast, Petrie, QLD, Australia 2Centre for BioInnovation, University of the Sunshine Coast, Sippy Downs, QLD, Australia DOI 10.7717/peerj.19312 Academic Editor Stuart Pimm Subject Areas Biodiversity, Conservation Biology, Zoology, Natural Resource Management Keywords Captive breeding, Sex ratio, Sex allocation, Insurance population, Integrated management,...
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Niche-related processes explain phylogenetic structure of acoustic bird communities in Mexico

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By Faith DP, Thomas GH, Joy JB, Tobias JA
| PeerJ
Niche-related processes explain phylogenetic structure of acoustic bird communities in Mexico 1Instituto de Investigaciones sobre los Recursos Naturales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México 2Facultad de Ciencias Biológicas, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, México DOI 10.7717/peerj.18412 Academic Editor Javier Manjarrez Subject Areas Animal Behavior, Biodiversity, Ecology, Zoology Keywords Acoustic adaptation hypothesis,...
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Health status and morphometrics of Galápagos magnificent frigatebirds (Fregata magnificens magnificens) determined by hematology, biochemistry, blood gas, and physical examination

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By Russell AF, Nelson JB, Russell KE, Thomas GH
| PeerJ
Health status and morphometrics of Galápagos magnificent frigatebirds (Fregata magnificens magnificens) determined by hematology, biochemistry, blood gas, and physical examination 1Oradell Animal Hospital, Paramus, New Jersey, United States 2College of Veterinary Medicine, Universidad San Francisco de Quito, Quito, Ecuador 3Clinical Sciences, North Carolina State University, Raleigh, NC, United States 4Galapagos Science Center, Universidad San Francisco de Quito, Puerto Baquerizo Moreno,...
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Niche conservatism and convergence in birds of three cenocrons in the Mexican Transition Zone

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By Warren AD, Tobias JA, Thomas GH, Lawrence KT
| PeerJ
We found that both niche conservatism and convergence occur in the MTZ when the species are split into cenocrons. Assigning species to a cenocron allowed us to detect statistically significant differences between the groups, not only in terms of their average age, endemism, and richness but also in how these measures change along the environmental gradients.
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Is shape in the eye of the beholder? Assessing landmarking error in geometric morphometric analyses on live fish

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By Thomas GH, Henry AB, Ross AH, Paolo Moccetti
| PeerJ
Paolo Moccetti conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft. Jessica R. Rodger conceived and designed the experiments, performed the experiments, authored or reviewed drafts of the article, and approved the final draft. Jonathan D. Bolland conceived and designed the experiments, authored or reviewed drafts of the article, and approved the final draft.
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Allopatric speciation is more prevalent than parapatric ecological divergence in a recent high-Andean diversification (Linochilus: Asteraceae)

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By Blake SF, Thomas GH, Kay KM, Óscar Vargas
| PeerJ
Sister species comparisons To measure the relative contribution of allopatric speciation and parapatric ecological divergence to recent speciation events, we compared the geographical distribution (Appendix S1) and the leaf areas (Appendix S2) of putative sister species based on phylogeny and taxonomy (see assumption section below). We used leaf area as a proxy to evaluate ecological divergence between these sister species pairs.
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