Microvariations, or mutations, are considered to be slight changes of the historical record.
微变异或突变可以认为是物种衍变历史记录中的一页.
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而物种丰富度越高, 地貌形态异质性增强,并且踏头数目越少,地表糙度越大.
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Today, like many species, this living fossil carries a threatened existence in New Zealand.
今天像许多物种, 这活化石携带了威胁的存在于新西兰.
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And lo and behold , they learned something about this species they never imagined.
而且在屏气凝神中, 他们在这个物种上发现了他们从未想到的事.
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Kuanghua Village at mid-to-low elevation and has a wealth of flora and fauna.
光华村位于中低海拔交界,物种特别丰富.
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物种多样性对于生产力和稳定性的作用机制并不相同,超产和稳定性之间并不必然存在联系.
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The variety of the species is necessary for the balance of ecological system.
物种的多样性是生态系统平衡所必需的.
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Remain unused for almost 50 years, Savillarow, therefore, reserves good ecologic resources.
近50年的土地封存, 让“梦都-岭上林里”得以拥有非常良好的生态物种资源.
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Isoenzyme ( isozyme ) An enzyme that occurs in different structural forms within a single species.
同功 酶:是某一物种中具有不同的结构类型的一类酶.
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The species that make up natural ecosystems usually display a wide range of genetic variability.
构成自然生态系统的生物种,通常表现有较大范围的遗传变异性.
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群系可以按其优势物种的特征划分为一些次级的群落类型.
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The whole groups of species sometimes falsely appear to have been abruptly developed.
整个的物种群有时会假象地表现为突然发生的.
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Ireland has a smaller range of native and fauna than elsewhere in Europe.
与欧洲其它地方相比,爱尔兰当地的动植物种类较少.
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植物种子中的脂肪酸成分可通过人为遗传调控发生改变.
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International trade is one of the major threats to survival of species wild fauna and flora.
国际贸易是造成物种濒危的主要因素之一.
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Facies of species are often connected with extreme or disturbed habitats.
植物种的群常与严酷或干扰的生境有联系.
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