caa a22 4500 445367113 CHVBK 20180317142934.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00484-011-0457-y doi (NATIONALLICENCE)springer-10.1007/s00484-011-0457-y Plant phenology networks of citizen scientists: recommendations from two decades of experience in Canada [Elektronische Daten] [Elisabeth Beaubien, Andreas Hamann] Plant phenology networks of citizen scientists have a long history and have recently contributed to our understanding of climate change effects on ecosystems. This paper describes the development of the Alberta and Canada PlantWatch programs, which coordinate networks of citizen scientists who track spring development timing for common plants. Tracking spring phenology is highly suited to volunteers and, with effective volunteer management, observers will stay loyal to a phenology program for many years. Over two decades beginning in 1987, Alberta PlantWatch volunteers reported 47,000 records, the majority contributed by observers who participated for more than 9years. We present a quantitative analysis of factors that determine the quality of this phenological data and explore sources of variation. Our goal is to help those who wish to initiate new observer networks with an analysis of the effectiveness of program protocols including selected plant species and bloom stages. ISB, 2011 Citizen science nationallicence Climate change nationallicence Phenology nationallicence Flowering nationallicence Canada nationallicence Beaubien Elisabeth Department of Renewable Resources, University of Alberta, 751 General Services Building, T6G 2H1, Edmonton, AB, Canada aut Hamann Andreas Department of Renewable Resources, University of Alberta, 751 General Services Building, T6G 2H1, Edmonton, AB, Canada aut International Journal of Biometeorology Springer-Verlag 55/6(2011-11-01), 833-841 0020-7128 55:6<833 2011 55 484 https://doi.org/10.1007/s00484-011-0457-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00484-011-0457-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beaubien Elisabeth Department of Renewable Resources, University of Alberta, 751 General Services Building, T6G 2H1, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Hamann Andreas Department of Renewable Resources, University of Alberta, 751 General Services Building, T6G 2H1, Edmonton, AB, Canada aut NATIONALLICENCE 773 0- International Journal of Biometeorology Springer-Verlag 55/6(2011-11-01), 833-841 0020-7128 55:6<833 2011 55 484 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer