In arid environments such as deserts, nitrogen is often themost limiting nutrient for biological activity. The majorityof the ecosystem nitrogen flux is typically thought to be drivenby production and loss of reactive nitrogen species by microorganismsin the soil.
Meter for meter, peatlands store more carbon
than any other terrestrial ecosystem. Covering only about 3% of Earth's
land area, they hold the equivalent of half of the carbon that is in
the atmosphere as CO2.
Meter for meter, peatlands store more carbon
than any other terrestrial ecosystem. Covering only about 3% of Earth's
land area, they hold the equivalent of half of the carbon that is in
the atmosphere as CO2.
Unsatisfied with merely halting environmental destruction, some conservationists are trying to reconstruct ecosystems of the past. Emma Marris travels back in time with the rewilders.
This new WWF study explores how the glaciers in the Indian Himalayas are going through change and says that smaller glaciers in the Himalayas are proving much more vulnerable to climate change impacts than previously thought, with significant implications for the livelihood and freshwater supplies of millions.
This publication provides guidance on how to implement the FAO Code of Conduct for Responsible Fisheries (CCRF) using an ecosystem approach to fisheries and aquaculture.