Zone Atelier Armorique Flora LTER France

The surveys were performed according to the same protocol for each sampling year on more than 100 field margins, in Brittany (France). Vegetation was sampled in 25 m long quadrats (one quadrat per margin)
placed in the middle of the field margin or stream bank to avoid edge
effects from connection with other field margins. Presence–absence of 26 plant species of the herb layer vegetation was
recorded. The 26 plant species were selected because they were common, readily
identifiable and represent a large range of characteristics: in
taxonomy, morphology and life history. Vegetation surveys were conducted in 1994, 1998, 2001, 2007, 2011, 2013
and 2015, exclusively between May 15 and August 15. Nomenclature of vascular plants is according to the Flora Europaea. For more details on protocol, sampling design, see: Alignier A. & Baudry
J. (2015) Changes in management practices over time explain most
variation in vegetation of field margins in Brittany, France.
Agriculture, Ecosystems and Environment, 211, 164-172. Alignier A. &
Baudry J. (2016) Is plant temporal beta diversity of field margins
related to changes in management practices ? Acta Oecologica, 75, 1-7.
Alignier A. (2018) Changes in a field margin vegetation metacommunity
over a 21-year interval and the impacts of structural condition and
management. Agriculture, Ecosystems and Environment, 251, 1-10