查询词典 propagules

Many species could then coexist within each piece of a mosaic landscape by what has been termed ''mass effects,'' because subpopulations in areas with negative growth rates would be supplemented by propagules from areas with reproductive surpluses.

如果群体效应很重要的话，植物种类的多样性应该在栖息地边界的附近加强，尤其是在生存环境差异不大的地方。

Four isolates, SP4, SP5, BEG 167 and BEG 141. were selected from the 17 tested isolates. The effectiveness of the isolates was related to ecological attributes such as the number of propagules formed in the soil.

以宿主植物的生物量、产量及吸磷效应作为筛选高效菌株的主要标准，在所用的17个菌株中，选出SP4、SP5、BEG167和BEG141为高效菌株。

Many species could then coexist within each piece of a mosaic landscape by what has been termed ''mass effects,'' because subpopulations in areas with negative growth rates would be supplemented by propagules from areas with reproductive surpluses.

许多种植物通被称为&群体效应&的方式在各个拼嵌区域块中共存，（是因为负成长地区就会被别处的过剩繁殖补充

4The low similarities betweenseed banks and the established vegetation were considered to be the consequences ofthe frequent presence in the established vegetation but not in seed banks of someperennial rhizomatous plants which mainly depended on vegetative propagation toregenerate;insignificant difference in the species composition of seed barks amongtransects, might be accounted for by the fact that the flood drift had functioned as adisseminator for propagules;and with the intensifying of the flooding disturbance,both species diversity and the similarity between seed banks and establishedvegetations declined.

4种子库与地上植被相似性普遍较低，其原因是主要靠营养繁殖以更新种群的多年生根茎植物经常在植被中出现而不在种子库中出现；受水淹干扰的样带之间种子库的种类组成差异不大，说明洪水漂移行使了繁殖体传播和散布的功能；随水淹干扰强度增加，种子库物种多样性指数减小，种子库与地上植被的物种组成相似性下降。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。