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Abstract

Agricultural intensification impacts local arthropod communities. The temporal and spatialvariation of agricultural environments can have a significant impact on insect pest populations, yet littlework has been done to date on the effect of intra-annual variation (within season) or spatiotemporal effectson arthropod functional community composition. The aim of this research was to evaluate the effects ofintra-annual variation and landscape composition on the aphid community. To that end, we investigated thefollowing research question: How do intra-annual variation and landscape composition affect aphid abun-dance, species richness, and functional community composition? In this study, we quantified landscape com-position as percent cropland, intra-annual variation as sampling week measured throughout the growingseason, and aphid functional community composition as crop virus transmission—or vectoring—ability. Wecollected data in two agricultural regions: a diversified agricultural region in New York State (NY) and anagriculturally intense potato-growing region in Wisconsin (WI). We found that the interactive effect of land-scape composition and intra-annual variation significantly affected aphid abundance and species richness inboth study regions, and functional community composition in NY. These results indicate that spatiotempo-ral shifts in agroecosystems have significant implications for aphid functional community composition.

Item Type:	Article
Authors/Creators:	Claflin, SB and Hernandez, N and Groves, R and Thaler, JS and Power, AG
Keywords:	agroecology, insect-vectored pathogen, landscape epidemiology, vector ecology
Journal or Publication Title:	Ecosphere
Publisher:	Ecological Society of America
ISSN:	2150-8925
DOI / ID Number:	https://doi.org/10.1002/ecs2.2710
Copyright Information:	Copyright 2019 The Authors. Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/
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