Observation bias and its causes in botanical surveys on high-alpine summits

Elevation gradient of successful plant traits for colonizing alpine summits under climate change

(2013) Magalì Matteodo et al.   Environmental Research Letters

The oldest monitoring site of the Alps revisited: accelerated increase in plant species richness on Piz Linard summit since 1835

(2013) Sonja Wipf et al.   Plant Ecology & Diversity

Using historical plant surveys to track biodiversity on mountain summits

(2012) Veronika Stöckli et al.   Plant Ecology & Diversity

Reproducibility of species lists, visual cover estimates and frequency methods for recording high-mountain vegetation

(2010) Pascal Vittoz et al.   JOURNAL OF VEGETATION SCIENCE

Factors affecting detection probability in plant distribution studies

(2009) Guoke Chen et al.   JOURNAL OF ECOLOGY

Imperfect detection and its consequences for monitoring for conservation

(2008) M. Kéry et al.   COMMUNITY ECOLOGY

Observer bias and random variation in vegetation monitoring data

(2008) Per Milberg et al.   JOURNAL OF VEGETATION SCIENCE