Landscape simplification leads to loss of plant–pollinator interaction diversity and flower visitation frequency despite buffering by abundant generalist pollinators

作者：Corina Maurer, Carlos Martínez‐Núñez, Christophe Dominik, Jonna Heuschele, Yicong Liu, Peter Neumann, Robert J. Paxton, Loïc Pellissier, Willem Proesmans, Oliver Schweiger, Hajnalka Szentgyörgyi, Adam J. Vanbergen, Matthias Albrecht · 发表于：Diversity and Distributions · 年份：2024 · DOI：10.1111/ddi.13853 · 被引用次数：10 · 研究领域：Plant and animal studies、Plant Parasitism and Resistance、Ecology and Vegetation Dynamics Studies

Abstract Aim Global change, especially landscape simplification, is a main driver of species loss that can alter ecological interaction networks, with potentially severe consequences to ecosystem functions. Therefore, understanding how landscape simplification affects the rate of loss of plant–pollinator interaction diversity (i.e., number of unique interactions) compared to species diversity alone, and the role of persisting abundant pollinators, is key to assess the consequences of landscape simplification on network stability and pollination services. Location France, Germany, and Switzerland. Methods We analysed 24 landscape‐scale plant–pollinator networks from standardised transect walks along landscape simplification gradients in three countries. We compared the rates of species and interaction diversity loss along the landscape simplification gradient and then stepwise excluded the top 1%–20% most abundant pollinators from the data set to evaluate their effect on interaction diversity, network robustness to secondary loss of species, and flower visitation frequencies in simplified landscapes. Results Interaction diversity was not more vulnerable than species diversity to landscape simplification, with pollinator and interaction diversity showing similar rates of erosion with landscape simplification. We found that 20% of both species and interactions are lost with an increase of arable crop cover from 30% to 80% in a landscape. The decrease in interaction diversity was...