The species composition of mollusca were markedly difference in different sediment.

不同底质的红树林区软体动物组成有显著差异.污染可能是造成沙头角红树林区软体动物多样性低的重要环境因子.

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The age structure of most dominant species community is declining, and the community species composition unstable.

样地内多数优势种群的年龄结构为衰退型, 群落的种类组成不稳定.

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The species composition and characteristics of mangrove flora in the world were reviewed and discussed.

探讨了世界红树林植物区系的种类组成及其特点.

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The species composition and the biomass of phytoplankton varied whenfeeded with photosynthetic bacteria in fish ponds.

鱼塘泼施光合细菌后浮游植物种类组成及生物量均发生变化.

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