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2. Ecosphere (aquarium) - Wikipedia

   en.wikipedia.org/wiki/Ecosphere_(aquarium)

   The advantage of an aquarium closed with a lid (rather than a permanently sealed plug, which is found in the base of an EcoSphere) is that if the system goes out of equilibrium, the owner can remedy conditions and prevent a complete die-off. Intervention to maintain good water quality allows a larger number of shrimp to live in the open system ...

3. Ecotone - Wikipedia

   en.wikipedia.org/wiki/Ecotone

   Scientists look at color variations and changes in plant height. Third, a change of species can signal an ecotone. There will be specific organisms on one side of an ecotone or the other. Other factors can illustrate or obscure an ecotone, for example, migration and the establishment of new plants. These are known as spatial mass effects, which ...

4. Ecosystem ecology - Wikipedia

   en.wikipedia.org/wiki/Ecosystem_ecology

   Ecosystem services are ecologically mediated functional processes essential to sustaining healthy human societies. [6] Water provision and filtration, production of biomass in forestry, agriculture, and fisheries, and removal of greenhouse gases such as carbon dioxide (CO 2) from the atmosphere are examples of ecosystem services essential to public health and economic opportunity.

5. Substrate (aquarium) - Wikipedia

   en.wikipedia.org/wiki/Substrate_(aquarium)

   For freshwater aquaria, gravel is the most common substrate. To prevent damage to fish, gravel should not be sharp. Aquarium gravel can be as coarse as pea-sized or as fine as 1–2 mm. [1] It is available in a number of colors, and may be naturally colored or dyed, and may have a polymer seal to ensure it does not affect water chemistry. [1]

6. Substrate (biology) - Wikipedia

   en.wikipedia.org/wiki/Substrate_(biology)

   In biology, a substrate is the surface on which an organism (such as a plant, fungus, or animal) lives.A substrate can include biotic or abiotic materials and animals. For example, encrusting algae that lives on a rock (its substrate) can be itself a substrate for an animal that lives on top of the algae.

7. Potting soil - Wikipedia

   en.wikipedia.org/wiki/Potting_soil

   A flowerpot filled with potting soil. Potting soil or growing media, also known as potting mix or potting compost (UK), is a substrate used to grow plants in containers. The first recorded use of the term is from an 1861 issue of the American Agriculturist. [1]