caa a22 4500 445367016 CHVBK 20180317142933.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00484-011-0421-x doi (NATIONALLICENCE)springer-10.1007/s00484-011-0421-x A comparison of methods to estimate seasonal phenological development from BBCH scale recording [Elektronische Daten] [Christine Cornelius, Hannes Petermeier, Nicole Estrella, Annette Menzel] The BBCH scale is a two-digit key of growth stages in plants that is based on standardised definitions of plant development stages. The extended BBCH scale, used in this paper, enables the coding of the entire development cycle of all mono- and dicotyledonous plants. Using this key, the frequency distribution of phenological stages was recorded which required a less intense sampling frequency. The onset dates of single events were later estimated from the frequency distribution of BBCH codes. The purpose of this study was to present four different methods from which those onset dates can be estimated. Furthermore, the effects of (1) a less detailed observation key and (2) changes in the sampling frequency on estimates of onset dates were assessed. For all analyses, phenological data from the entire development cycle of four grass species were used. Estimates of onset dates determined by Weighted Plant Development (WPD), Pooled pre-/post-Stage Development (PSD), Cumulative Stage Development (CSD) and Ordinal Logistic Regression (OLR) methods can all be used to determine the phenological progression of plants. Moreover, results show that a less detailed observation key still resulted in similar onset dates, unless more than two consecutive stages were omitted. Further results reveal that the simulation of a less intense sampling frequency had only small impacts on estimates of onset dates. Thus, especially in remote areas where an observation interval of a week is not feasible, estimates derived from the frequency distribution of BBCH codes appear to be appropriate. ISB, 2011 Flowering nationallicence Grassland nationallicence Observation key nationallicence Onset dates nationallicence Sampling frequency nationallicence ANOVA : Analysis of Variance nationallicence BBCH : Biologische Bundesanstalt, Bundessortenamt and Chemical Industry nationallicence CSD : Cumulative Stage Development nationallicence DWD : German meteorological service nationallicence IPG : International Phenological Gardens nationallicence OLR : Ordinal Logistic Regression nationallicence PSD : Pooled pre/post Stage Development nationallicence USA-NPN : USA National Phenology Network nationallicence WPD : Weighted Plant Development nationallicence Cornelius Christine Chair of Ecoclimatology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany aut Petermeier Hannes Fachgebiet Biostatistik, Technische Universität München, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany aut Estrella Nicole Chair of Ecoclimatology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany aut Menzel Annette Chair of Ecoclimatology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany aut International Journal of Biometeorology Springer-Verlag 55/6(2011-11-01), 867-877 0020-7128 55:6<867 2011 55 484 https://doi.org/10.1007/s00484-011-0421-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00484-011-0421-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cornelius Christine Chair of Ecoclimatology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany aut NATIONALLICENCE 700 1- Petermeier Hannes Fachgebiet Biostatistik, Technische Universität München, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany aut NATIONALLICENCE 700 1- Estrella Nicole Chair of Ecoclimatology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany aut NATIONALLICENCE 700 1- Menzel Annette Chair of Ecoclimatology, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85354, Freising, Germany aut NATIONALLICENCE 773 0- International Journal of Biometeorology Springer-Verlag 55/6(2011-11-01), 867-877 0020-7128 55:6<867 2011 55 484 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer