Once the animals die , the rocky structures erode , depriving fish of vital spawning and feeding grounds .
一旦这种动物死亡,礁石结构将会受侵蚀,作为鱼类至关紧要的产卵及进食的重要场所也不复存在。
The wind suddenly blows from the south , and I can smell salt and rain and the smell fish make when they 're spawning .
风突然从南边吹来,我能闻到咸咸的味道,雨的气息、鱼儿产卵时散发的气味。
These deep ecosystems provide shelter , spawning and breeding areas for fishes and other creatures , as well as protection from strong currents and predators .
The mean weight of fish caught is also dropping , which worries the research institute greatly , though the biomass of spawning stock has increased slightly since 1985 .
Scientists and environmentalists agree that the causes of the decline include overfishing and the destruction of spawning habitats .
科学家和环境学家都承认,导致鲑鱼数量下降的原因是过度捕捞和产卵生境的破坏。
After that , start blasting the infested civilian biodome and huts that were spawning infested folks .
之后开始有biodome、民用爆破的小屋是产卵出没的人。
Technologies like fish ladders help salmon go up over dams and enter upstream spawning areas , but the presence of hydroelectric dams changes their migration patterns and hurts fish populations .
But the biggest culprit was the edwards dam -- a small stone-and-timber structure built in 1837 for hydropower generation that blocked the fish from reaching their spawning grounds .