niche n. 1.壁龛〔搁雕像、花瓶等的墙壁凹处〕;【地质学;地理学】雪凹。 2.(适合个人性格、能力等的)适当地位,活动范围;【生物学】小生境。 3.(市场供求情势为企业家提拱的)有利可图的缺口。 deserve a niche in the temple of fame 可以流芳百世。 find the right niche for oneself 适得其所;为自己谋得合适的位置[地位]。
Why those species - pairs shown positive association or correlation was that they had the similar biological characters and the similar eco - adaptive and segeration niche . why the species pairs shown negative association or correlation was that they had different ecological characters , different adaption and overlapping niche 种对间负关联或负相关,则是由于它们具有不同的生物学特性、对生境具有不同的生态适应性和相互重叠的生态位所致。