DOI: 10.5061/dryad.q2bvq83xr
title: Data from: Landscape homogenization strengthens the fitness benefits of plant species' centrality in pollination networks

description: To comprehend how pollination services can be maintained in increasingly
 anthropized landscapes is essential to understand how plant-pollinator
 interactions vary along disturbance gradients influencing community
 function. Recent studies found positive relationships between plant
 fitness and centrality in interaction networks (i.e., high proximity to
 other plants in networks via shared pollinators). However, this
 relationship might vary depending on communities’ landscape context and
 species’ functional traits. We hypothesized that the fitness benefits of
 centrality might be higher in homogeneous than heterogeneous landscapes,
 as the former might favor generalist species and behaviors. We also
 expected stronger positive relationships between centrality and fitness in
 pollinator-dependent actinomorphic species compared to autogamous species
 that do not depend on pollinators, or zygomorphic species that are
 pollinated by a small set of specialized species. Here, we combined field
 samplings and experiments to study how centrality related to fitness
 (seeds produced) in 11 plant species from 20 communities along a gradient
 of landscape heterogeneity. For that, we assessed changes in the
 centrality-fitness relationship associated with landscape variations and
 species’ functional groups: autogamous species,
 entomophilous-actinomorphic species, and entomophilous-zygomorphic
 species. We found that centrality positively influenced plant fitness in
 more homogeneous landscapes, whereas it had a null effect on fitness in
 more heterogeneous landscapes. Furthermore, centrality was irrelevant for
 the fitness of mostly autogamous plant species but influenced the fitness
 of mostly entomophilous species, increasing the reproductive output in
 actinomorphic species while decreasing it in zygomorphic ones. For the
 first time, we show that the relationship between interaction structure
 and function varies with the landscape context and the group of species
 evaluated. Our study also highlights the importance of conserving
 heterogeneous landscapes to maintain effective specialized interactions,
 as the higher fitness benefits of centrality in homogenous landscapes
 might drive feedback cycles of increased generalization over time in
 communities within these landscapes.
description: # Landscape homogenization strengthens the fitness benefits of plant
 species' centrality in pollination networks Dataset DOI:
 [10.5061/dryad.q2bvq83xr](10.5061/dryad.q2bvq83xr) ## Description of the
 data and file structure ### Files and variables #### File:
 centralityDATA\_EcolApp.xlsx **Description:**  Data file contains two
 sheets: 1. Landscape-context: Contains the data used in the first analysis
 studying the influence of the landscape-context in the relationship
 between the centrality of species in interaction networks and their
 fitness.  2. Functional traits: Contains the data used in the first
 analysis studying the relationship between the centrality of species in
 interaction networks and their fitness depending on the functional traits
 of the studied plant species. ##### Variables Next table contains a short
 description of the variables included in both sheets: | variable |
 description | | :---------------------- |
 :-------------------------------------------------------------------------- | | Locality | Names of the study sites | | Species | Names of the plant species studied | | CollectedDate | Date of sampling | | ID | Identification number for each individual | | Centrality (z-scores) | Z-scores values for closeness centrality | | Seeds/Flower | Number of seeds per flower | | Landscape heterogeneity | Shannon diversity of land-cover classess calculated using Corine Land Cover | | Trait group | species groups by their functional traits |