| Kategorie |
Textpublikation |
| Referenztyp |
Zeitschriften |
| DOI |
10.1111/1365-2435.14692
|
Lizenz  |
|
| Titel (primär) |
Seed dispersal mechanisms modulate Janzen-Connell effects in Mediterranean forests through antagonists and mutualists |
| Autor |
Perea, A.J.; Wiegand, T.; Bastida, J.M.; Pajares-Murgó, M.; Cano, D.; López-García, Á.; Pomarede, L.C.; Prieto-Rubio, J.; Rey, P.J.; Garrido, J.L.; Alcántara, J.M. |
| Quelle |
Functional Ecology |
| Erscheinungsjahr |
2025 |
| Department |
OESA |
| Band/Volume |
39 |
| Heft |
1 |
| Seite von |
77 |
| Seite bis |
90 |
| Sprache |
englisch |
| Topic |
T5 Future Landscapes |
| Daten-/Softwarelinks |
https://doi.org/10.5061/dryad.t76hdr83w
https://doi.org/10.5061/dryad.98sf7m0nh
https://doi.org/10.5281/zenodo.10611074 |
| Supplements |
https://besjournals.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2F1365-2435.14692&file=fec14692-sup-0001-DataS1.docx |
| Keywords |
antagonism; community assembly; Janzen-Connell; mutualism; pathogens; plant recruitment; point pattern analyses; seed dispersal |
| Abstract |
- Antagonist and mutualist organisms mediate the
long-standing, classical Janzen-Connell effects and yet they are rarely
investigated, especially when they share plant species hosts. Here, we
propose that plant species create an “antagonists- and mutualist-scape”
which, coupled with seed dispersal mechanisms, will govern the relative
survival rates of juveniles within the landscape and influence their
later life stages.
- We combined data on fully stem mapped plots of woody
plant species in two Mediterranean forests (Mixed Forest of Segura [MFS]
and Mixed Forest of Jaen [MFJ]) with data on the associated communities
of leaf epiphytic fungi, leaf pathogens, sap-sucking insects and chewer
insects hosted by each woody plant species. This allowed us to
indirectly test the Janzen-Connell hypothesis by investigating the
placement of plant species with contrasting seed dispersal mechanisms
(fleshy fruited vs. dry-fruited plant) within the antagonists- and
mutualist-scapes.
- More specifically, we determined the degree of
host-specificity of plant-associated organisms and defined the
antagonist- or mutualist-scapes for focal plants as the mean number of
antagonist- or mutualist species the focal plant shares with its
(sapling or adult) plant neighbours, respectively. We then applied
multivariate spatial point pattern analysis to test whether saplings and
adults of the focal species tended to be located in favourable sites of
the antagonist-scapes (i.e. were neighboured by fewer antagonist
species than expected) or were distributed independently of the
antagonist-scapes.
- A substantial proportion of organisms was associated
with more than one plant species, with organisms at MFJ being more
“host-specific” than organisms at MFS. Our spatial analyses revealed
spatial patterns that differed strongly between fleshy-fruited and
dry-fruited species and were, in most cases, consistent with our
expectations. For example, saplings of dry-fruited species were placed
in favourable sites in the saplings antagonist-scapes, whereas saplings
of fleshy-fruited species were independently placed with respect to the
saplings antagonist-scapes.
- Our results show how the placement of plant species
within the antagonist-scapes changes during the ontogeny, and how this
is influenced by Janzen-Connell effects and the seed dispersal
mechanisms. We provide a new approach and indications about the
importance of generalist antagonists and mutualists as drivers of the
spatial assembly of plant communities.
|
| dauerhafte UFZ-Verlinkung |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=29915 |
Perea, A.J., Wiegand, T., Bastida, J.M., Pajares-Murgó, M., Cano, D., López-García, Á., Pomarede, L.C., Prieto-Rubio, J., Rey, P.J., Garrido, J.L., Alcántara, J.M. (2025):
Seed dispersal mechanisms modulate Janzen-Connell effects in Mediterranean forests through antagonists and mutualists
Funct. Ecol. 39 (1), 77 - 90 10.1111/1365-2435.14692 |
