12 (4-3) 翻譯68-2-3

In other words, as a result of long-term evolutionary changes each species plays a specific ecological role, called its niche, with generalist species having broad ecological roles and specialist species having narrower ecological roles. Is it better to be generalist or a specialist? It depends. When environmental conditions are fairly constant, as in a tropical rain forest, specialists have an advantage because they have fewer competitors. But under rapidly changing environmental conditions, the generalist usually is better off than the specialist.換句話說,由於長期演變變化每個物種扮演特有的生態角色,稱他為生態區位,廣生性物種有寬廣的生態角色和狹生性物種有狹窄的生態角色,至於是廣生性好還是狹生性好?視情況而定,當環境情況相當恆定時,像在熱帶雨林狹生性就比較好,因為他們有少量的競爭者,但在環境迅速改變的情況下廣生性就比狹生性好