Lichens are one of the most iconic and ubiquitous symbioses known, widely valued as
indicators of environmental quality and, more recently, climate change. Our understanding of …

Currently, forest ecosystems are often located in remote areas, far from direct sources of air
pollution. Nonetheless, they may be affected by different types of atmospheric deposition …

Atmospheric deposition is an important pathway for the input of anthropogenic and natural
nutrients to terrestrial and aquatic ecosystems. However, previous measurements focused …

Thin, hair‐like lichens (Alectoria, Bryoria, Usnea) form conspicuous epiphyte communities
across the boreal biome. These poikilohydric organisms provide important ecosystem …

Abstract The US Environmental Protection Agency (EPA) estimates on-road vehicles
emissions using the Motor Vehicle Emission Simulator (MOVES). We developed updated …

Long-term data on spatial dynamics of epiphytic lichens associated with old-growth forests
are fundamental for understanding how environmental factors drive their extinction and …

Human activities have increased atmospheric emissions and deposition of oxidized and
reduced forms of nitrogen, but emission control programs have largely focused on oxidized …

Acidophytic, oligotrophic lichens on tree trunks are widely considered to be the most
sensitive biota to elevated concentrations of atmospheric ammonia (NH 3). We studied the …

Wildfire outbreaks can lead to extreme biomass burning (BB) emissions of both oxidized (eg,
nitrogen oxides; NO x= NO+ NO 2) and reduced form (eg, ammonia; NH 3) nitrogen (N) …

Critical loads (CLs) are frequently used to quantify terrestrial ecosystem impacts from
nitrogen (N) deposition using ecological responses such as the growth and mortality of tree …