A standardized assessment of forest mammal communities reveals consistent functional composition and vulnerability across the tropics

Francesco Rovero*, Jorge Ahumada, Patrick A. Jansen, Douglas Sheil, Patricia Alvarez, Kelly Boekee, Santiago Espinosa, Marcela Guimarães Moreira Lima, Emanuel H. Martin, Timothy G. O'Brien, Julia Salvador, Fernanda Santos, Melissa Rosa, Alexander Zvoleff, Chris Sutherland, Simone Tenan

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The understanding of global diversity patterns has benefitted from a focus on functional traits and how they relate to variation in environmental conditions among assemblages. Distant communities in similar environments often share characteristics, and for tropical forest mammals, this functional trait convergence has been demonstrated at coarse scales (110–200 km resolution), but less is known about how these patterns manifest at fine scales, where local processes (e.g. habitat features and anthropogenic activities) and biotic interactions occur. Here, we used standardized camera trapping data and a novel analytical method that accounts for imperfect detection to assess how the functional composition of terrestrial mammal communities for two traits – trophic guild and body mass – varies across 16 protected areas in tropical forests and three continents, in relation to the extent of protected habitat and anthropogenic pressures. We found that despite their taxonomic differences, communities generally have a consistent trophic guild composition, and respond similarly to these factors. Insectivores were found to be sensitive to the size of protected habitat and surrounding human population density. Body mass distribution varied little among communities both in terms of central tendency and spread, and interestingly, community average body mass declined with proximity to human settlements. Results indicate predicted trait convergence among assemblages at the coarse scale reflects consistent functional composition among communities at the local scale, suggesting that broadly similar habitats and selective pressures shaped communities with similar trophic strategies and responses to drivers of change. These similarities provide a foundation for assessing assemblages under anthropogenic threats and sharing conservation measures.
Original languageEnglish
Pages (from-to)75-84
JournalEcography
Volume43
Issue number1
Early online date5 Nov 2019
DOIs
Publication statusPublished - Jan 2020

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tropics
vulnerability
mammal
mammals
body mass
habitat
guild
habitats
tropical forests
tropical forest
insectivore
human settlements
insectivores
human settlement
human population
anthropogenic activities
community composition
analytical methods
trapping
protected area

Cite this

Rovero, Francesco ; Ahumada, Jorge ; Jansen, Patrick A. ; Sheil, Douglas ; Alvarez, Patricia ; Boekee, Kelly ; Espinosa, Santiago ; Lima, Marcela Guimarães Moreira ; Martin, Emanuel H. ; O'Brien, Timothy G. ; Salvador, Julia ; Santos, Fernanda ; Rosa, Melissa ; Zvoleff, Alexander ; Sutherland, Chris ; Tenan, Simone. / A standardized assessment of forest mammal communities reveals consistent functional composition and vulnerability across the tropics. In: Ecography. 2020 ; Vol. 43, No. 1. pp. 75-84.
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abstract = "The understanding of global diversity patterns has benefitted from a focus on functional traits and how they relate to variation in environmental conditions among assemblages. Distant communities in similar environments often share characteristics, and for tropical forest mammals, this functional trait convergence has been demonstrated at coarse scales (110–200 km resolution), but less is known about how these patterns manifest at fine scales, where local processes (e.g. habitat features and anthropogenic activities) and biotic interactions occur. Here, we used standardized camera trapping data and a novel analytical method that accounts for imperfect detection to assess how the functional composition of terrestrial mammal communities for two traits – trophic guild and body mass – varies across 16 protected areas in tropical forests and three continents, in relation to the extent of protected habitat and anthropogenic pressures. We found that despite their taxonomic differences, communities generally have a consistent trophic guild composition, and respond similarly to these factors. Insectivores were found to be sensitive to the size of protected habitat and surrounding human population density. Body mass distribution varied little among communities both in terms of central tendency and spread, and interestingly, community average body mass declined with proximity to human settlements. Results indicate predicted trait convergence among assemblages at the coarse scale reflects consistent functional composition among communities at the local scale, suggesting that broadly similar habitats and selective pressures shaped communities with similar trophic strategies and responses to drivers of change. These similarities provide a foundation for assessing assemblages under anthropogenic threats and sharing conservation measures.",
author = "Francesco Rovero and Jorge Ahumada and Jansen, {Patrick A.} and Douglas Sheil and Patricia Alvarez and Kelly Boekee and Santiago Espinosa and Lima, {Marcela Guimar{\~a}es Moreira} and Martin, {Emanuel H.} and O'Brien, {Timothy G.} and Julia Salvador and Fernanda Santos and Melissa Rosa and Alexander Zvoleff and Chris Sutherland and Simone Tenan",
year = "2020",
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doi = "10.1111/ecog.04773",
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Rovero, F, Ahumada, J, Jansen, PA, Sheil, D, Alvarez, P, Boekee, K, Espinosa, S, Lima, MGM, Martin, EH, O'Brien, TG, Salvador, J, Santos, F, Rosa, M, Zvoleff, A, Sutherland, C & Tenan, S 2020, 'A standardized assessment of forest mammal communities reveals consistent functional composition and vulnerability across the tropics', Ecography, vol. 43, no. 1, pp. 75-84. https://doi.org/10.1111/ecog.04773

A standardized assessment of forest mammal communities reveals consistent functional composition and vulnerability across the tropics. / Rovero, Francesco; Ahumada, Jorge; Jansen, Patrick A.; Sheil, Douglas; Alvarez, Patricia; Boekee, Kelly; Espinosa, Santiago; Lima, Marcela Guimarães Moreira; Martin, Emanuel H.; O'Brien, Timothy G.; Salvador, Julia; Santos, Fernanda; Rosa, Melissa; Zvoleff, Alexander; Sutherland, Chris; Tenan, Simone.

In: Ecography, Vol. 43, No. 1, 01.2020, p. 75-84.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Rovero, Francesco

AU - Ahumada, Jorge

AU - Jansen, Patrick A.

AU - Sheil, Douglas

AU - Alvarez, Patricia

AU - Boekee, Kelly

AU - Espinosa, Santiago

AU - Lima, Marcela Guimarães Moreira

AU - Martin, Emanuel H.

AU - O'Brien, Timothy G.

AU - Salvador, Julia

AU - Santos, Fernanda

AU - Rosa, Melissa

AU - Zvoleff, Alexander

AU - Sutherland, Chris

AU - Tenan, Simone

PY - 2020/1

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N2 - The understanding of global diversity patterns has benefitted from a focus on functional traits and how they relate to variation in environmental conditions among assemblages. Distant communities in similar environments often share characteristics, and for tropical forest mammals, this functional trait convergence has been demonstrated at coarse scales (110–200 km resolution), but less is known about how these patterns manifest at fine scales, where local processes (e.g. habitat features and anthropogenic activities) and biotic interactions occur. Here, we used standardized camera trapping data and a novel analytical method that accounts for imperfect detection to assess how the functional composition of terrestrial mammal communities for two traits – trophic guild and body mass – varies across 16 protected areas in tropical forests and three continents, in relation to the extent of protected habitat and anthropogenic pressures. We found that despite their taxonomic differences, communities generally have a consistent trophic guild composition, and respond similarly to these factors. Insectivores were found to be sensitive to the size of protected habitat and surrounding human population density. Body mass distribution varied little among communities both in terms of central tendency and spread, and interestingly, community average body mass declined with proximity to human settlements. Results indicate predicted trait convergence among assemblages at the coarse scale reflects consistent functional composition among communities at the local scale, suggesting that broadly similar habitats and selective pressures shaped communities with similar trophic strategies and responses to drivers of change. These similarities provide a foundation for assessing assemblages under anthropogenic threats and sharing conservation measures.

AB - The understanding of global diversity patterns has benefitted from a focus on functional traits and how they relate to variation in environmental conditions among assemblages. Distant communities in similar environments often share characteristics, and for tropical forest mammals, this functional trait convergence has been demonstrated at coarse scales (110–200 km resolution), but less is known about how these patterns manifest at fine scales, where local processes (e.g. habitat features and anthropogenic activities) and biotic interactions occur. Here, we used standardized camera trapping data and a novel analytical method that accounts for imperfect detection to assess how the functional composition of terrestrial mammal communities for two traits – trophic guild and body mass – varies across 16 protected areas in tropical forests and three continents, in relation to the extent of protected habitat and anthropogenic pressures. We found that despite their taxonomic differences, communities generally have a consistent trophic guild composition, and respond similarly to these factors. Insectivores were found to be sensitive to the size of protected habitat and surrounding human population density. Body mass distribution varied little among communities both in terms of central tendency and spread, and interestingly, community average body mass declined with proximity to human settlements. Results indicate predicted trait convergence among assemblages at the coarse scale reflects consistent functional composition among communities at the local scale, suggesting that broadly similar habitats and selective pressures shaped communities with similar trophic strategies and responses to drivers of change. These similarities provide a foundation for assessing assemblages under anthropogenic threats and sharing conservation measures.

U2 - 10.1111/ecog.04773

DO - 10.1111/ecog.04773

M3 - Article

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