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#species B

2 public questions tagged with this topic.

Niche CD RP CEP

Marsh edge for species B represents its:

A realized niche is the portion of environmental and resource space a species actually occupies under natural biotic interactions. If species B could persist throughout a marsh when alone but is confined to the marsh edge when a competitor is present, the edge represents its realized niche. The larger potentially occupiable area is its fundamental niche. “Preferred habitat” suggests active selection and does not establish whether exclusion or physiological tolerance determines distribution, while “optimal niche” is not the standard term for the observed restricted range. This interpretation re

Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13

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Niche CD RP CEP

For species B, entire marsh represents:

The entire marsh can represent a species’ fundamental niche when experiments or observations show that the species can survive and reproduce throughout it in the absence of a competitor. Its realized niche may be only a restricted section, such as the marsh edge, because competition prevents occupation elsewhere. Calling the whole marsh merely “habitat” identifies the physical environment but does not express the contrast between potential and actual ecological use. A competitive zone would describe an interaction region, not the full set of conditions the species could occupy. The row appears

Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13

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