The emphasis of this new "community ecology" was on the composition and structure of communities consisting of different species.
这种新的“群落生态学”强调的是由不同物种组成的群落的组成和结构。
2
The complex interplay of species in symbiotic relationships highlights an important point about communities: Their structure depends on a web of diverse connections among organisms.
物种在共生关系中复杂的相互作用突出了群落的一个重要特点：它们的结构取决于生物之间多样的联系网络。
3
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.