As human populations increase and land-use intensifies, toxic and unsightly nuisance
blooms of algae are becoming larger and more frequent in freshwater lakes. In most cases …

Aim Potassium (K) is the second most abundant nutrient in plant photosynthetic tissues after
nitrogen (N). Thousands of physiological and metabolic studies in recent decades have …

Potassium, mostly as a cation (K+), together with calcium (Ca2+) are the most abundant
inorganic chemicals in plant cellular media, but they are rarely discussed. K+ is not a …

Concerns about climate change and the desire to develop a domestic, renewable energy
source are increasing the interest in forest biomass extraction, especially in the form of …

Historical increases in emissions and atmospheric deposition of oxidized and reduced
nitrogen (N) provided the impetus for extensive, global-scale research investigating the …

Calcium concentrations are now commonly declining in softwater boreal lakes. Although the
mechanisms leading to these declines are generally well known, the consequences for the …

We present long‐term changes in Norwegian lake water quality across regional gradients in
atmospheric pollution, air temperature, hydrology, and vegetation using (a) a national …

Acid deposition arising from sulphur (S) and nitrogen (N) emissions from fossil fuel
combustion and agriculture has contributed to the acidification of terrestrial ecosystems in …

One of the greatest challenges faced by limnologists, as well as most ecologists and
environmental scientists, is finding data with time scales appropriate to their questions …

A critical component of assessing the impacts of climate change on forest ecosystems
involves understanding associated changes in the biogeochemical cycling of elements …