- 行业: Biology
- Number of terms: 15386
- Number of blossaries: 0
- Company Profile:
Terrapsychology is a word coined by Craig Chalquist to describe deep, systematic, trans-empirical approaches to encountering the presence, soul, or "voice" of places and things: what the ancients knew as their resident genius loci or indwelling spirit. This perspective emerged from sustained ...
When a plant community gradually undergoes simplification, a thinning of variety, and a reduction in mass. Often associated with a deterioration in the environment.
Industry:Biology
A cross between two genetically diverse parent plants. Agribusiness companies produce and sell hybrids that do not reproduce in order to retain a monopoly on seeds.
Industry:Biology
The transformation of one physical state into another--gas into liquid, solid into gas, etc. Always requires an exchange of energy, whether an increase or decrease.
Industry:Biology
The percentage of forest floor overgrown with tree crown. A major component of forest productivity. Lack of light and room to grow limits it (called crown shyness).
Industry:Biology
Microscopic particle of dust, ash, etc. Around which a raindrop forms. Drops also form around silver iodide particles seeded into clouds to increase local rainfall.
Industry:Biology
A gradient of variations in a species that stretches across a geographical location. Example: different types of eucalyptus trees running across a series of slopes.
Industry:Biology
Adjacent to a river or stream. Riparian zones exchange organic matter between wet and dry habitats and regulate erosion, sedimentation, temperature, and nutrients.
Industry:Biology
Animals with a notochord--a long, cartilaginous support column running most of the body's length--located between the stomach and a fluid-filled dorsal nerve cord.
Industry:Biology
How easily soils and rocks transport water horizontally and vertically. Shale is porous and therefore permeable, as is sand and gravel; granite and clay are not.
Industry:Biology
Surface soil particles cemented together by lime (calcium carbonate). Lumps of it can block water, curtail root growth, and cause iron deficiency in nearby plants.
Industry:Biology
