10.5061/DRYAD.BH8N5J8
Alcantara, Julio M.
Depto. Biología Animal, Biología Vegetal y EcologíaUniversidad de Jaén
Jaén Spain
Pulgar, Manuel
Depto. Biología Animal, Biología Vegetal y EcologíaUniversidad de Jaén
Jaén Spain
Trøjelsgaard, Kristian
Aalborg University
Garrido, José L.
Estación Biológica de Doñana
Rey, Pedro J.
Depto. Biología Animal, Biología Vegetal y EcologíaUniversidad de Jaén
Jaén Spain
Data from: Stochastic and deterministic effects on interactions between
canopy and recruiting species in forest communities
Dryad
dataset
2019
Missing and Forbidden Links
Interactions phylogenetics
Plant community phylogeny
Replacement networks
ecological networks
2019-05-11T00:00:00Z
2019-05-11T00:00:00Z
en
https://doi.org/10.1111/1365-2435.13140
376775 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
1. Interactions between established (canopy) and recruiting individuals
(recruits) are pervasive in plant communities. Studies on recruitment in
forests have mainly focused on negative density-dependent conspecific
interactions, while the outcomes of heterospecific canopy-recruit
interactions have received much less attention and are generally assumed
to be driven by stochastic processes. 2. Herein, we explore the relative
influence of stochastic (abundance) and deterministic (species identity
and phylogenetic distance) effects on the frequency of canopy-recruit
interactions, and characterise the interactions in terms of their spatial
consistency and effect on recruitment (depressing, neutral or enhancing).
3. In 12 plots (50 50 m) of mixed pine-oak forests in Southern Spain we
identified all saplings recruiting beneath 56 shrub and tree species, and
in open areas not covered by woody plants. We used generalised linear
mixed models to investigate the influence of stochastic and deterministic
processes on the frequency of canopy-recruit interactions, on their
spatial consistency and their effects on recruitment, and applied neutral
null models to evaluate the spatial consistency in the occurrence of
interactions across plots. 4. Deterministic and stochastic interactions
were equally common emphasizing the prevalence of non-neutral effects.
Among the realized interactions, 36.8% enhanced recruitment, 49.05% were
neutral, and 14.1% depressed recruitment. Many potential interactions
(42.08%) were not observed in any study sites, presumably due to the
scarcity of the interacting species. Moreover, the probability that two
species formed a canopy-recruit interaction, the frequency of their
interaction, and the probability that the interaction had an enhancing
effect on recruitment, all increased with the phylogenetic distance
between the interacting species. However, the prevalence of these effects
depended on the recruitment environment (heterospecific, conspecific or
open). Recruitment-enhancing interactions between heterospecifics were
more consistently realized in different sites than neutral or depressing
interactions. 5. The establishment of canopy-recruit interactions (which
species recruits beneath which others, and how often) is not simply
determined by stochastic events. Indeed, due to their prevalence we argue
that deterministic canopy-recruit interactions are important drivers of
plant community dynamics.
field.dataStudy species and locations (Table 1-2); interactions frequency
by site (Table 3); interactions tested for their effect on recruitment
(Table 4); and interaction consistency across plots (Table
5).phylo.dataPhylip file with the sequences used to construct the
phylogeny in Appendix S1.
Southeastern Iberian Peninsula