Data from: Proximity to canopy mediates changes in the defensive chemistry and herbivore loads of an understory tropical shrub, Piper kelleyi
Glassmire, Andrea E., Department of Entomology East Lansing MI48824 USA
Philbin, Casey, University of Nevada Reno
Richards, Lora A., University of Nevada Reno
Jeffrey, Christopher S., University of Nevada Reno
Snook, Joshua S., Department of Entomology East Lansing MI48824 USA
Dyer, Lee A., University of Nevada Reno
Published Dec 13, 2018 on Dryad.
Cite this dataset
Glassmire, Andrea E. et al. (2018). Data from: Proximity to canopy mediates changes in the defensive chemistry and herbivore loads of an understory tropical shrub, Piper kelleyi [Dataset]. Dryad. https://doi.org/10.5061/dryad.v6p96q5
Phytochemical traits are a key component of plant defense theory. Chemical ecology has been biased towards studying effects of individual metabolites even though effective plant defenses are comprised of diverse mixtures of metabolites. We tested the phytochemical landscape hypothesis, positing that trophic interactions are contingent upon their spatial location across a phytochemically diverse landscape. Specifically, intraspecific phytochemical changes associated with vertical strata in forests were hypothesized to affect herbivore communities of the neotropical shrub Piper kelleyi Tepe (Piperaceae). Using a field experiment, we found that phytochemical diversity increased with canopy height, and higher levels of phytochemical diversity located near the canopy were characterized by tradeoffs between photoactive and non-photoactive biosynthetic pathways. For understory plants closer to the ground, phytochemical diversity increased as direct light transmittance decreased, and these plants were characterized by up to 37% reductions in herbivory. Our results suggest that intraspecific phytochemical diversity structures herbivore communities across the landscape, affecting total herbivory.
LCMS annotated peaks
Spreadsheet contains LCMS identified and unidentified peaks. Includes relative concentrations.
NMR Diversity & EcologicalData
Spreadsheet contains NMR diversity indices for each sample. The ecological data is included.
National Science Foundation, Award: DEB 1502059 and DEB 1442103