Linking trait similarity to interspecific spatial associations in a moist tropical forest

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • Eduardo Velázquez
  • C.E. Timothy Paine
  • Felix May
  • Thorsten Wiegand
Aim

Community assembly theory predicts that niche differentiation promotes the spatial clustering of functionally dissimilar species, whereas habitat filtering has the converse effect. We used these predictions to assess the relative effects of habitat filtering and niche differentiation on recruit community assembly over spatial (5‐ and 30‐m neighbourhoods) and temporal (20‐yr) scales in the Forest Dynamics Plot at Barro Colorado Island.
Location

Barro Colorado Island, Panama.
Methods

We integrated data on the spatial patterns of ≥1 cm DBH (diameter at 1.3 m above ground) recruits with data on seven functional traits for 64 species. First, we quantified the interspecific association patterns of all species pairs i and j using the K‐function Kij(r) and the nearest‐neighbour distribution function Dij(r). Second, for those pairs with significant spatial associations, we calculated an index of interspecific spatial association using the results of these two summary statistics. Finally, we examined the relationship between interspecific spatial association and trait similarity using simple and partial Mantel tests.
Results

In all censuses, almost one‐half of species pairs had no spatial associations, but for pairs that were significantly spatially associated, positive relationships between trait similarity and spatial association occurred in 5‐m and 30‐m neighbourhoods, whereas significant negative relationships only appeared in 5‐m neighbourhoods. This suggests that habitat filtering was more important than niche differentiation in assembling recruit communities at 5‐ and 30‐m scales. Habitat filtering mainly acted upon traits related to topographic habitat preferences and dispersal mode, whereas spatial association was inversely related to similarity in terms of wood specific gravity and shade tolerance.
Conclusions

Our findings suggest that both stochastic and deterministic processes operate in species‐rich ecological communities, but the role of habitat filtering and niche differentiation as determinants of community assembly vary over spatial and temporal scales. Species co‐occurrence was driven by habitat filtering at small and large scales, but also by a combination of niche differentiation and weaker‐competitor exclusion effects at small scales. Temporal variations in the importance of habitat filtering and niche differentiation could be related to the occurrence of disturbances such as tree falls. Our results emphasize the role of trait‐based processes in plant community assembly.
Original languageEnglish
JournalJournal of Vegetation Science
Volume26
Issue number6
Pages (from-to)1068-1079
Number of pages12
ISSN1100-9233
DOIs
Publication statusPublished - 01.11.2015
Externally publishedYes

Bibliographical note

ERC. Grant Number: 233066

    Research areas

  • Ecosystems Research - Co-occurrence, Habitat filtering, Mantel test, Niche differentiation, Point Pattern, Recruits, Traits

DOI

Recently viewed

Publications

  1. Lengthscale-dependent modelling of ductile failure in metallic microstructures
  2. Consumers' Responses to CSR Activities
  3. Forgetting fire
  4. Standing Still
  5. Effect of a Web-Based Guided Self-Help Intervention for Prevention of Major Depression in Adults with Subthreshold Depression
  6. Thermodynamic description of reactions between Mg and CaO
  7. Introduction to the basics of life cycle sustainability assessment focusing on the UNEP/SETAC Life Cycle Initiative LCSA framework
  8. Deactivation and transformation products in biodegradability testing of ß-lactams amoxicillin and piperacillin
  9. Ideology as filter
  10. Long-term retrospective analysis of the societal metabolism of cobalt in the European Union
  11. Robust Control using Sliding Mode Approach for Ice-Clamping Device activated by Thermoelectric Coolers
  12. Landscape modification and habitat fragmentation: a synthesis
  13. The value of local environmental knowledge to monitor and manage changing coral reef systems in Kiribati
  14. Implementierung eines Fehlerpräventionsprogramms für gefahrenintensive Arbeitsprozesse
  15. Diversity and specialization of host parasitoid interactions in an urban rural interface
  16. Integratives Gendering in der Lehre
  17. Hydrological tracers for assessing transport and dissipation processes of pesticides in a model constructed wetland system
  18. Red mason bees cannot compete with honey bees for floral resources in a cage experiment
  19. Identification of multi-fault in rotor-bearing system using spectral kurtosis and EEMD
  20. Cyberpunk
  21. The Weinberg-Salam Model of Electroweak Interactions
  22. An extended kalman filter for temperature monitoring of a metal-polymer hybrid fibre based heater structure
  23. Political discourse in the media
  24. Be smart, play dumb? A transactional perspective on day-specific knowledge hiding, interpersonal conflict, and psychological strain
  25. Communication under the microscope: The theory and practice of microanalysis
  26. Analysis of Dynamic Response of a Two Degrees of Freedom (2-DOF) Ball Bearing Nonlinear Model
  27. How data on transformation products can support the redesign of sulfonamides towards better biodegradability in the environment
  28. Step back from the forest and step up to the Bonn Challenge
  29. Numerical dynamic simulation and analysis of a lithium bromide/water long term solar heat storage system
  30. Article 13

Press / Media

  1. TourKon on Board