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. Computer-based Adaptive Speed Tests
  2. Transformation products in the water cycle and the unsolved problem of their proactive assessment
  3. DEVELOPMENT OF AN INTEGRATIVE LOGISTICS MODEL FOR LINKING PLANNING AND CONTROL TASKS WITH LOGISTICAL VARIABLES ALONG THE COMPANY'S INTERNAL SUPPLY CHAIN.
  4. Cross-hedging minimum return guarantees
  5. Maschinenbelegungsplanung mit evolutionären Algorithmen
  6. Paradoxe Dynamik
  7. Global assessment of the non-equilibrium theory of rangelands
  8. Control of geometry deviation by stiffness variation in polymer deep drawing tools
  9. Multimodality
  10. Use
  11. Carbocyclic cis-[1.1.1]-tris-σ-homobenzenes - Syntheses by triple epoxide → cyclopropane conversions, structural data, [σ2s+σ2s+σ2s] cycloreversions
  12. Introduction
  13. Validity claims in context
  14. The Sociolinguistics of language use in Ireland
  15. Lernbegleitung durch Unterrichtsbesprechungen im Langzeitpraktikum
  16. Religious Loyality and Acceptance of Corruption.
  17. Researching Interrelations of formal and informal Learning in early Adolescence form a Critical Race Perspective
  18. Performance Saga: Interview 03
  19. Marine biodiversity change impacts relational values
  20. ShortPathQA
  21. Determination of rutin in green tea infusions using square-wave voltammetry with a rigid carbon-polyurethane composite electrode
  22. Timing and fragmentation of daily working hours arrangements and income inequality
  23. Signal, Material, Sampling
  24. Economic Evaluation of an Internet-Based Stress Management Intervention Alongside a Randomized Controlled Trial
  25. Infiltrating Artifacts
  26. Fragmented Landscape, Fragmented Knowledge
  27. Gender-Specific Effects at Work
  28. The Diffusion of Values among Democracies and Autocracies
  29. Musical Interface Agendas. Musical Appropriation via Technological Pre-configuration
  30. Alpen
  31. Herbivore and pathogen effects on tree growth are additive, but mediated by tree diversity and plant traits
  32. When Birds of Different Feather Flock Together
  33. Going beyond efficiency: including altruistic motives in behavioral models for sustainability transitions to address sufficiency.
  34. Differenz und Alterität im Ritual
  35. The EU inspire directive
  36. What shapes ground beetle assemblages in a tree species-rich subtropical forest?
  37. The impact of auditor rotation, audit firm rotation and non-audit services on earnings quality, audit quality and investor perceptions: A literature review
  38. The User-Journey in Online Search
  39. Beschreibungsmethodik für AAL-Integrationsprofile
  40. „Rechtsstaatlichkeit muss wehtun” oder: 20 Jahre „InIIS“
  41. Integrating Art and Education for Sustainable Development. A Transdisciplinary Working Process in the Context of Culture and Sustainability