1. Flowering cover crops as an early-season floral resource for native bees in Pennsylvania agroecosystems Open Access Author: Ellis, Katherine Elizabeth Title: Flowering cover crops as an early-season floral resource for native bees in Pennsylvania agroecosystems Graduate Program: Entomology Keywords: pollinatorsnative beescover cropsconservationagriculture File: Download K_Ellis_MSThesis_Final.pdf Committee Members: Mary Ellen Barbercheck, Thesis Advisor/Co-Advisor