Welcome to Ariadne's Forest Glossary
Glossary: N is for ... natural nitrogen niche.
by Ariadne Unst
Glossary of N...
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- Being formed.
- native (or native species)
- A plant native to a specific region. It evolved there and it grows there
- natural pruning (self pruning)
- The freeing of the stem of a standing tree of its branches by natural
death, disintegration, or fall. Causes include decay, weakening by deficiency
of light or water, or breakage by snow, ice, and wind.
- natural selection (n.)
- A process in evolution.
Those individuals (of a species) whose traits help them adapt to
their specific environment tend to transmit those characteristics. Individuals that are less
able to adapt tend to contribute fewer descendents, so that their maladaptive traits
decrease or die out.
- natural resources (n.)
- The materials of the natural world that are used by humans (or other creatures).
These resources include:
sunlight and rainfall; oxygen and other gases of the atmosphere;
the minerals of the earth's rocks and sediments and soils;
water of rainfall and river, fen, lake, and ocean;
and both wild and domesticated creatures and plants.
- A plant that is not native to an area, and that has colonized that area.
- Activity range of a species, determined by its needs and its size.
- In 1959, G. Evelyn Hutchinson (Homage to Santa Rosalia or why are
there so many kinds of animals?) identified that species diversity is a function of
(among other things) niche diversification, which lets
communities stabilize in parts.
- nitrogen cycle
- Nitrogen's movement through soil, air, animals, and plants.
- 1. Some plants have root nodules that contain nitrogen-fixing bacteria
- 2. Some soils contain free-living nitrogen-fixing bacteria
(Azotobacter) and cyanobacteria.
- 3. Excreta and decay products of plants and animals are broken into
ammonium salts; bacteria oxidize these to make nitrites and then nitrates (in
the presence of oxygen), and finally to return the nitrogen to the air.
- Plants that do not contain specialize components that transport water and food
materials from their source to the site they are used. Includes:
- A dry,
one-seeded (usually) fruit enclosed in a hard case.
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