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Citation for Study 16064

Citation title: "Unraveling the interplay of community assembly processes acting on multiple niche axes across spatial scales".

Study name: "Unraveling the interplay of community assembly processes acting on multiple niche axes across spatial scales".

This study is part of submission 16064 (Status: Published).

Citation

Trisos C.H., Petchey O.L., & Tobias J.A. 2014. Unraveling the interplay of community assembly processes acting on multiple niche axes across spatial scales. American Naturalist, .

Authors

• Trisos C.H. (submitter) 0027217998834
• Petchey O.L.
• Tobias J.A.

Abstract

How the relative importance of community assembly processes varies with spatial scale is the focus of intensive debate, in part because inferring the scales at which specific niche-based processes act is difficult. One obstacle is that standard phylogenetic and functional diversity metrics may integrate the signals of multiple processes when combining separate niche axes into one variable (multi-niche-axis metrics), potentially obscuring overlapping niche-based processes. We use simulations to evaluate the power of these metrics to detect competition and habitat filtering when these processes operate across multiple niche axes and vary in their relative importance. We then test for both processes at a range of spatial scales in a Neotropical bird assemblage. Simulations revealed that multi-niche-axis metrics had low power to detect competition and habitat filtering when a mix of these processes acts across niche axes, whereas metrics focused on single niche axes were better able to deal with this complexity. We found the same contrast in bird communities, where both competition and habitat filtering were detected at the scale of individual territories, but only by single-niche-axes metrics focused on specific niche axes (e.g. foraging traits). Our results suggest that multi-niche-axis metrics may produce misleading evidence that niche-based processes are partitioned, particularly across scales, and highlight the importance of analyzing functional diversity patterns on individual niche axes when testing assembly models.

Keywords

community assembly; environmental filtering; interspecific competition; niche differentiation; phylogenetic community structure; Neotropical birds

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S16064
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref23400,
  	 author = {Christopher Harry Trisos and Owen L. Petchey and Joseph A Tobias},
  	 title = {Unraveling the interplay of community assembly processes acting on multiple niche axes across spatial scales},
  	 year = {2014},
  	 keywords = {community assembly; environmental filtering; interspecific competition; niche differentiation; phylogenetic community structure; Neotropical birds},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {American Naturalist},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {How the relative importance of community assembly processes varies with spatial scale is the focus of intensive debate, in part because inferring the scales at which specific niche-based processes act is difficult. One obstacle is that standard phylogenetic and functional diversity metrics may integrate the signals of multiple processes when combining separate niche axes into one variable (multi-niche-axis metrics), potentially obscuring overlapping niche-based processes. We use simulations to evaluate the power of these metrics to detect competition and habitat filtering when these processes operate across multiple niche axes and vary in their relative importance. We then test for both processes at a range of spatial scales in a Neotropical bird assemblage. Simulations revealed that multi-niche-axis metrics had low power to detect competition and habitat filtering when a mix of these processes acts across niche axes, whereas metrics focused on single niche axes were better able to deal with this complexity. We found the same contrast in bird communities, where both competition and habitat filtering were detected at the scale of individual territories, but only by single-niche-axes metrics focused on specific niche axes (e.g. foraging traits). Our results suggest that multi-niche-axis metrics may produce misleading evidence that niche-based processes are partitioned, particularly across scales, and highlight the importance of analyzing functional diversity patterns on individual niche axes when testing assembly models. }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 23400
  AU  - Trisos,Christopher Harry
  AU  - Petchey,Owen L.
  AU  - Tobias,Joseph A
  T1  - Unraveling the interplay of community assembly processes acting on multiple niche axes across spatial scales
  PY  - 2014
  KW  - community assembly; environmental filtering; interspecific competition; niche differentiation; phylogenetic community structure; Neotropical birds
  UR  - http://dx.doi.org/
  N2  - How the relative importance of community assembly processes varies with spatial scale is the focus of intensive debate, in part because inferring the scales at which specific niche-based processes act is difficult. One obstacle is that standard phylogenetic and functional diversity metrics may integrate the signals of multiple processes when combining separate niche axes into one variable (multi-niche-axis metrics), potentially obscuring overlapping niche-based processes. We use simulations to evaluate the power of these metrics to detect competition and habitat filtering when these processes operate across multiple niche axes and vary in their relative importance. We then test for both processes at a range of spatial scales in a Neotropical bird assemblage. Simulations revealed that multi-niche-axis metrics had low power to detect competition and habitat filtering when a mix of these processes acts across niche axes, whereas metrics focused on single niche axes were better able to deal with this complexity. We found the same contrast in bird communities, where both competition and habitat filtering were detected at the scale of individual territories, but only by single-niche-axes metrics focused on specific niche axes (e.g. foraging traits). Our results suggest that multi-niche-axis metrics may produce misleading evidence that niche-based processes are partitioned, particularly across scales, and highlight the importance of analyzing functional diversity patterns on individual niche axes when testing assembly models. 
  L3  - 
  JF  - American Naturalist
  VL  - 
  IS  - 
  ER  -