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  2. Environmental gradient - Wikipedia

    en.wikipedia.org/wiki/Environmental_gradient

    An environmental gradient, or climate gradient, is a change in abiotic (non-living) factors through space (or time). Environmental gradients can be related to factors such as altitude , depth, temperature , soil humidity and precipitation .

  3. Huisman–Olff–Fresco models - Wikipedia

    en.wikipedia.org/wiki/Huisman–Olff–Fresco_models

    Huisman–Olff–Fresco models (HOF models) are a hierarchical set of 5 models with increasing complexity, designated for fitting unimodal species response curves [1] on environmental gradient. [ 2 ] A implementation of the model including extension for bimodal distributions exists as an R module downloadable from CRAN .

  4. Gradsect - Wikipedia

    en.wikipedia.org/wiki/Gradsect

    A gradsect or gradient-directed transect is a low-input, high-return sampling method where the aim is to maximise information about the distribution of biota in any area of study. Most living things are rarely distributed at random , their placement being largely determined by a hierarchy of environmental factors.

  5. Decompression theory - Wikipedia

    en.wikipedia.org/wiki/Decompression_theory

    The Variable Gradient Model adjusts the gradient factors to fit the depth profile on the assumption that a straight line adjustment using the same factor on the deep M-value regardless of the actual depth is less appropriate than using an M-value linked to the actual depth. (the shallow M-value is linked to actual depth of zero in both cases) [78]

  6. Efforts to stem the Deepwater Horizon oil spill - Wikipedia

    en.wikipedia.org/wiki/Efforts_to_stem_the...

    The government's estimates suggested the cap and other equipment were capturing less than half of the oil leaking from the sea floor as of late June. [24] On July 10, robots removed the containment cap to replace it with a better-fitting cap ("Top Hat Number 10"); this meant all of the leaking oil would escape until the new cap was in place. [25]

  7. Lapse rate - Wikipedia

    en.wikipedia.org/wiki/Lapse_rate

    Charts of the environmental lapse rate are known as thermodynamic diagrams, examples of which include Skew-T log-P diagrams and tephigrams. (See also Thermals ). The difference in moist adiabatic lapse rate and the dry rate is the cause of foehn wind phenomenon (also known as " Chinook winds " in parts of North America).

  8. Red Hill water crisis - Wikipedia

    en.wikipedia.org/wiki/Red_Hill_water_crisis

    A major leak of 27,000 U.S. gallons (100,000 liters) of fuel in January 2014 drew attention from both the Environmental Protection Agency (EPA) and the Hawaiʻi Department of Health (DOH), which led to the Navy entering into an agreement (formally titled the "Administrative Order on Consent," or AOC) to enhance monitoring for leaks and build ...

  9. Oil well control - Wikipedia

    en.wikipedia.org/wiki/Oil_well_control

    As technology has advanced, more modern drillers have better control of the overall well. Oil well control is the management of the dangerous effects caused by the unexpected release of formation fluid, such as natural gas and/or crude oil, upon surface equipment of oil or gas drilling rigs and escaping into the atmosphere.