Grassland biodiversity bounces back from long-term nitrogen addition

Low biodiversity state persists two decades after cessation of nutrient enrichment

(2013) Forest Isbell et al.   ECOLOGY LETTERS

Clarity or confusion? – Problems in attributing large-scale ecological changes to anthropogenic drivers

(2012) S.M. Smart et al.   ECOLOGICAL INDICATORS

Recovery of plant diversity following N cessation: effects of recruitment, litter, and elevated N cycling

(2010) Christopher M. Clark et al.   ECOLOGY

Nitrogen deposition threatens species richness of grasslands across Europe

(2010) Carly J. Stevens et al.   ENVIRONMENTAL POLLUTION

Direct and indirect effects of nitrogen deposition on species composition change in calcareous grasslands

(2010) LEON J. L. VAN DEN BERG et al.   GLOBAL CHANGE BIOLOGY

Changes in species richness and composition in European acidic grasslands over the past 70 years: the contribution of cumulative atmospheric nitrogen deposition

(2009) CECILIA DUPRÈ et al.   GLOBAL CHANGE BIOLOGY

Nitrogen deposition causes widespread loss of species richness in British habitats

(2009) LINDSAY C. MASKELL et al.   GLOBAL CHANGE BIOLOGY

Loss of plant species after chronic low-level nitrogen deposition to prairie grasslands

(2008) Christopher M. Clark et al.   NATURE