---
_id: '7236'
abstract:
- lang: eng
text: The biotic interactions hypothesis posits that biotic interactions are more
important drivers of adaptation closer to the equator, evidenced by “stronger”
contemporary interactions (e.g. greater interaction rates) and/or patterns of
trait evolution consistent with a history of stronger interactions. Support for
the hypothesis is mixed, but few studies span tropical and temperate regions while
experimentally controlling for evolutionary history. Here, we integrate field
observations and common garden experiments to quantify the relative importance
of pollination and herbivory in a pair of tropical‐temperate congeneric perennial
herbs. Phytolacca rivinoides and P. americana are pioneer species native to the
Neotropics and the eastern USA, respectively. We compared plant‐pollinator and
plant‐herbivore interactions between three tropical populations of P. rivinoides
from Costa Rica and three temperate populations of P. americana from its northern
range edge in Michigan and Ohio. For some metrics of interaction importance, we
also included three subtropical populations of P. americana from its southern
range edge in Florida. This approach confounds species and region but allows us,
uniquely, to measure complementary proxies of interaction importance across a
tropical‐temperate range in one system. To test the prediction that lower‐latitude
plants are more reliant on insect pollinators, we quantified floral display and
reward, insect visitation rates, and self‐pollination ability (autogamy). To test
the prediction that lower‐latitude plants experience more herbivore pressure,
we quantified herbivory rates, herbivore abundance, and leaf palatability. We
found evidence supporting the biotic interactions hypothesis for most comparisons
between P. rivinoides and north‐temperate P. americana (floral display, insect
visitation, autogamy, herbivory, herbivore abundance, and young‐leaf palatability).
Results for subtropical P. americana populations, however, were typically not
intermediate between P. rivinoides and north‐temperate P. americana, as would
be predicted by a linear latitudinal gradient in interaction importance. Subtropical
young‐leaf palatability was intermediate, but subtropical mature leaves were the
least palatable, and pollination‐related traits did not differ between temperate
and subtropical regions. These nonlinear patterns of interaction importance suggest
future work to relate interaction importance to climatic or biotic thresholds.
In sum, we found that the biotic interactions hypothesis was more consistently
supported at the larger spatial scale of our study.
article_number: e01397
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Carina
full_name: Baskett, Carina
id: 3B4A7CE2-F248-11E8-B48F-1D18A9856A87
last_name: Baskett
orcid: 0000-0002-7354-8574
- first_name: Lucy
full_name: Schroeder, Lucy
last_name: Schroeder
- first_name: Marjorie G.
full_name: Weber, Marjorie G.
last_name: Weber
- first_name: Douglas W.
full_name: Schemske, Douglas W.
last_name: Schemske
citation:
ama: Baskett C, Schroeder L, Weber MG, Schemske DW. Multiple metrics of latitudinal
patterns in insect pollination and herbivory for a tropical‐temperate congener
pair. Ecological Monographs. 2020;90(1). doi:10.1002/ecm.1397
apa: Baskett, C., Schroeder, L., Weber, M. G., & Schemske, D. W. (2020). Multiple
metrics of latitudinal patterns in insect pollination and herbivory for a tropical‐temperate
congener pair. Ecological Monographs. Wiley. https://doi.org/10.1002/ecm.1397
chicago: Baskett, Carina, Lucy Schroeder, Marjorie G. Weber, and Douglas W. Schemske.
“Multiple Metrics of Latitudinal Patterns in Insect Pollination and Herbivory
for a Tropical‐temperate Congener Pair.” Ecological Monographs. Wiley,
2020. https://doi.org/10.1002/ecm.1397.
ieee: C. Baskett, L. Schroeder, M. G. Weber, and D. W. Schemske, “Multiple metrics
of latitudinal patterns in insect pollination and herbivory for a tropical‐temperate
congener pair,” Ecological Monographs, vol. 90, no. 1. Wiley, 2020.
ista: Baskett C, Schroeder L, Weber MG, Schemske DW. 2020. Multiple metrics of latitudinal
patterns in insect pollination and herbivory for a tropical‐temperate congener
pair. Ecological Monographs. 90(1), e01397.
mla: Baskett, Carina, et al. “Multiple Metrics of Latitudinal Patterns in Insect
Pollination and Herbivory for a Tropical‐temperate Congener Pair.” Ecological
Monographs, vol. 90, no. 1, e01397, Wiley, 2020, doi:10.1002/ecm.1397.
short: C. Baskett, L. Schroeder, M.G. Weber, D.W. Schemske, Ecological Monographs
90 (2020).
date_created: 2020-01-07T12:47:07Z
date_published: 2020-02-01T00:00:00Z
date_updated: 2023-09-05T15:43:19Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1002/ecm.1397
ec_funded: 1
external_id:
isi:
- '000508511600001'
file:
- access_level: open_access
checksum: ab8130c6e68101f5a091d05324c36f08
content_type: application/pdf
creator: dernst
date_created: 2020-02-10T08:18:14Z
date_updated: 2020-07-14T12:47:54Z
file_id: '7469'
file_name: 2020_EcologMono_Baskett.pdf
file_size: 537941
relation: main_file
file_date_updated: 2020-07-14T12:47:54Z
has_accepted_license: '1'
intvolume: ' 90'
isi: 1
issue: '1'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Ecological Monographs
publication_identifier:
eissn:
- 1557-7015
issn:
- 0012-9615
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Multiple metrics of latitudinal patterns in insect pollination and herbivory
for a tropical‐temperate congener pair
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
short: CC BY-NC (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 90
year: '2020'
...