Monitoring of arable weed flora within a catchment in Northeast Germany

The datasets consists of detailed weed flora records on 43 constant plots. The data consist of two methods performed in parallel: 1. Weed species inventory (performed as species mapping on a 2ha areal), focussing on full species inventory and 2. detailed community structure record (performed as surveys at three fix plots of 25m*m size), focussing on quantitative relationsships between crops and weeds and between single weed species. Within every year 2-3 different dates are recorded. For both methodologies there are abundance values avialable for every single occurring species either as spatial frequency (1) or as coverage values in % (2). Available additonal data are: crop kind, crop abundance, soil type, soil nutrients, detailed climate data (from one central local station), detailed management data (soil tillage, pest manegement, fertilization, yields,..)