Anoxic waters are areas of sea water, fresh water, or groundwater that are depleted of dissolved oxygen. The US Geological Survey defines anoxic groundwater...

waters. Although anoxic events have not happened for millions of years, the geologic record shows that they happened many times in the past. Anoxic events...

used in various contexts: Anoxic waters, sea water, fresh water or groundwater that are depleted of dissolved oxygen Anoxic event, when the Earth's oceans...

Subsurface productivity is limited by nutrient availability, as the anoxic bottom waters act as a sink for reduced nitrate, in the form of ammonia. The benthic...

date to Antiquity. In 1976, Willard Bascom suggested that the deep, anoxic waters of the Black Sea might have preserved ships from antiquity because typical...

place along the Hudson River and San Francisco Bay. Algal bloom Anoxic event Anoxic waters Cultural eutrophication Desert Eutrophication Fish kill Hypoxia...

Mountaintop removal mining • Slurry impoundments Water (depletion) — Anoxic waters • Aral Sea • California Water Wars • Dead Sea • Lake Chad • Water scarcity...

needs of the grass roots and also helps to aerate the surrounding mud. Anoxic waters Firedamp, produced naturally in coal mines Hydric soil Landfill gas...

species of frogs prefer stagnant water. Some species of turtles Mata mata Anoxic waters Eutrophication (excessive enrichment by nutrients and minerals) Slough...

darkness that lies beneath the photic zone and includes most of the ocean waters. In the photic zone, the photosynthesis rate exceeds the respiration rate...