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austral

Overview page. Subjects: Plant Sciences and Forestry — Environmental Science.

An adjective, from the Latin australis, that means ‘southern’ or ‘of the south’.

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compensation level

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

The depth at which light penetration in aquatic ecosystems is so reduced that oxygen production by photosynthesis just balances oxygen consumption by respiration. Generally this implies a...

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cover

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

In descriptions of plant communities, the proportion of ground, usually expressed as a percentage, that is occupied by the perpendicular projection down on to it of the aerial parts of...

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cross-pollination

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

The transfer of pollen from the stamen of a flower to the stigma of a flower of a different genotype but usually of the same species, with subsequent growth of the pollen tube. See also...

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epilithic

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

Growthing on or attached to the surfaces of rocks or stones.

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field layer

Overview page. Subjects: Plant Sciences and Forestry — Environmental Science.

The herb and small shrub layer of a plant community. Compare canopy; ground layer; and shrub layer.

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herbarium

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

A collection of dried plants together with collection data that might be used in taxonomic studies based on their anatomy or preserved biomolecules.

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naturalized

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

Applied to a species that originally was imported from another country but that now behaves like a native in that it maintains itself without further human intervention and has invaded...

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overgrazing

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

Pressure by grazing animals, either domestic or wild, which results in the degradation of pasture, leading to exposure of the bare soil surface and ultimately erosion and even...

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psammosere

Overview page. Subjects: Environmental Science — Plant Sciences and Forestry.

The characteristic sequence of changes associated with stages in a plant succession developed on sand-dunes. See also succession.

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