Cyanobacteria are oxygen-evolving photoautotrophs with worldwide distribution in every
possible habitat, and they account for half of the global primary productivity. Because of their …

Cold environments represent the majority of the biosphere on Earth and have been
successfully colonized by psychrophilic microorganisms that are able to thrive at low …

Abstract" Cyanobacterial toxins are among the hazardous substances most widely found in
water. They occur naturally, but concentrations hazardous to human health are usually due …

Climate change and permafrost thaw are unlocking the vast storage of organic carbon held
in northern frozen soils. Here, we evaluated the effects of thawing ice‐rich permafrost on …

Recent results continue to show the general consensus that ozone-related increases in UV-
B radiation can negatively influence many aquatic species and aquatic ecosystems (eg …

Persistently cold environments constitute one of our world's largest ecosystems, and
microorganisms dominate the biomass and metabolic activity in these extreme …

This review provides a synthesis of limnological data and conclusions from studies on ponds
and small lakes at our research sites in Subarctic and Arctic Canada, Alaska, northern …

The influence of ultraviolet radiation (UVR) on populations of microorganisms has been the
subject of serious investigation for at least the past 20–25 years. UVR that is applicable to …

We investigated productivity at the basal trophic level in 15 unproductive lakes in a gradient
ranging from clear‐water to brown‐water (humic) lakes in northern Sweden. Primary …

Attached algae play a minor role in conceptual and empirical models of lake ecosystem
function but paradoxically form the energetic base of food webs that support a wide variety of …