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  2. Ecological pyramid - Wikipedia

    en.wikipedia.org/wiki/Ecological_pyramid

    A pyramid of biomass shows the relationship between biomass and trophic level by quantifying the biomass present at each trophic level of an ecological community at a particular time. It is a graphical representation of biomass (total amount of living or organic matter in an ecosystem) present in unit area in different trophic levels.

  3. Food plot - Wikipedia

    en.wikipedia.org/wiki/Food_plot

    Food plot in Germany. A food plot is a planted area set aside to act as a supplementary food source for wildlife. The term was coined by the U.S. hunting and outdoor industries and food plots are most commonly planted for game species. Food plot crops generally consist of but are not limited to legumes (clovers, alfalfa, beans, etc.), grains ...

  4. Food pyramid (nutrition) - Wikipedia

    en.wikipedia.org/wiki/Food_pyramid_(nutrition)

    A food pyramid's tip is the smallest part, so the fats and sweets in the top of the Food Pyramid should comprise the smallest percentage of the diet. The foods at the top of the food pyramid should be eaten sparingly because they provide calories, but not much in the way of nutrition.

  5. Rank abundance curve - Wikipedia

    en.wikipedia.org/wiki/Rank_abundance_curve

    A rank abundance curve or Whittaker plot is a chart used by ecologists to display relative species abundance, a component of biodiversity. It can also be used to visualize species richness and species evenness. It overcomes the shortcomings of biodiversity indices that cannot display the relative role different variables played in their ...

  6. Photobioreactor - Wikipedia

    en.wikipedia.org/wiki/Photobioreactor

    The tubular system is constructed in modules and can theoretically be scaled outdoors up to agricultural scale. A dedicated location is not crucial, similar to other closed systems, and therefore non-arable land is suitable as well. The material choice should prevent biofouling and ensure high final biomass concentrations. The combination of ...

  7. Ecological efficiency - Wikipedia

    en.wikipedia.org/wiki/Ecological_efficiency

    Out of a total of 28,400 terawatt-hours (96.8 × 10 ^ 15 BTU) of energy used in the US in 1999, 10.5% was used in food production, [3] with the percentage accounting for food from both producer and primary consumer trophic levels. In comparing the cultivation of animals versus plants, there is a clear difference in magnitude of energy efficiency.

  8. Fishing down the food web - Wikipedia

    en.wikipedia.org/wiki/Fishing_down_the_food_web

    The mean trophic level is calculated by assigning each fish or invertebrate species a number based on its trophic level.The trophic level is a measure of the position of an organism in a food web, starting at level 1 with primary producers, such as phytoplankton and seaweed, then moving through the primary consumers at level 2 that eat the primary producers to the secondary consumers at level ...

  9. Contour plowing - Wikipedia

    en.wikipedia.org/wiki/Contour_plowing

    Tillage erosion is the soil movement and erosion by tilling a given plot of land. [3] A similar practice is contour bunding where stones are placed around the contours of slopes. Contour plowing has been proven to reduce fertilizer loss, power, time consumption, and wear on machines, as well as to increase crop yields and reduce soil erosion.

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