单语范例（未经PONS编辑处理）
英语
- Niche dynamics assume differences among species in their fundamental niche which should give rise to patterns in the abundance and distribution of species (i.e. their realized niches).en.wikipedia.org
- This concept of a niche was later termed the fundamental niche, and described as all of the places a species could successfully occupy.en.wikipedia.org
- Being among the earliest terrestrial animals, centipedes were one of the first to fill a fundamental niche as ground level generalist predators in detrital food webs.en.wikipedia.org
- In this case, the realized niche was actually larger than the fundamental niche, and ideas about how to define a species niche had to change.en.wikipedia.org
- This asserts that at some point in the past, several species inhabited an area, and all of these species had overlapping fundamental niches.en.wikipedia.org
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