Search Results - Regime Shifts

  1. Freshwater eutrophication refers to the excessive growth of aquatic plants or algal blooms, due to high levels of nutrients in freshwater ecosystems such as lakes, reservoirs and rivers. The main driver of freshwater eutrophication is nutrient pollut ... Read More
  2. The Indian Summer Monsoon has attracted most concern and is of importance to India's economy which is particularly reliant on the monsoon precipitation. It accounts for 80% of mean precipitation of India but it has decreased 4-5% in the last five dec ... Read More
  3. Regime shifts in coral reefs typically involve a change in species dominance from hard corals (3D structure) to algal dominance. Less commonly documented shifts include shifts from hard corals to soft coral dominance, corallimorpharians, urchin barre ... Read More
  4. Soil salinization is a serious and difficult to reverse form of soil degradation.  Salinization occurs when dissolved salts in water tables rise to the soil surface and accumulate as water evaporates.  Often rise in a water table is due to ... Read More
  5. A regime shift towards a summer ice-free Arctic is occurring in response to Arctic warming that is demonstrated by reductions in sea ice surface area and ice volume during the summers. A summer ice-loss threshold, if not already passed, is expected t ... Read More
  6. The great ice sheet of Greenland was, traditionally, believed to take thousands of years to respond to external forcing. Recent observations suggest, however, that major changes in the dynamics of parts of the ice sheet are taking place over large ti ... Read More
  7. Thermohaline circulation is the global movement of ocean water from the surface to the deep ocean, which has a major role in regulating global climate. This movement has been halted in the past due to large inflows of freshwater.  A regime shift ... Read More
  8. The critical variable in the hypoxia regime shift is dissolved oxygen in the water (DO). Different self-reinforcing regimes can be identified as normoxia, hypoxia and anoxia. Hypoxia is typically associated with eutrophication, and related to excess ... Read More
  9. Woody encroachment occurs when a grassy landscape with a relatively low cover of woody plants rapidly and apparently irreversibly increases in tree or shrub cover. Encroachment typically occurs when savanna landscapes formerly under wild herbivores o ... Read More
  10. Bivalves form reefs that filter water removing sediments and nutrients maintaining clear water.  Bivalve reefs also produce spatial structure that provides habitat to other aquatic species. A low abundance regime can be induced by harvesting. Lo ... Read More