Century of phytoplankton change
Phytoplankton biomass is a crucial measure of the health of ocean ecosystems. An impressive synthesis of the relevant data, stretching back to more than 100 years ago, provides a connection with climate change.
Jill S. Baron & et al
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Shifts in Lake N:P stoichiometry and nutrient limitation driven by atmospheric nitrogen deposition
Human activities have more than doubled the amount of nitrogen(N) circulating in the biosphere. One major pathway of thisanthropogenic N input into ecosystems has been increased regionaldeposition from the atmosphere.