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- Producer The first TROPHIC LEVEL, in a food chain. 生产者：食物链中第一个营养级。
- food chains trophic levels 食物链营养级
- Food, food chains, food-webs and trophic levels consist of a system, termed the“ food system”. 食物、物链、物网以及由此构成的营养级组成“食物系统”。
- A photosynthetic green plant or chemosynthetic bacterium, constituting the first trophic level in a food chain; an autotrophic organism. 生产者，自养有机体构成食物链上的第一级营养层次的可进行光合作用的绿色植物或化能合成的细菌；自养有机体
- Ecology A photosynthetic green plant or chemosynthetic bacterium, constituting the first trophic level in a food chain; an autotrophic organism. 生产者，自养有机体：构成食物链上的第一级营养层次的可进行光合作用的绿色植物或化能合成的细菌；自养有机体
- A photosynthetic green plant or chemosynthetic bacterium,constituting the first trophic level in a food chain;an autotrophic organism. 生产者，自养有机体构成食物链上的第一级营养层次的可进行光合作用的绿色植物或化能合成的细菌;自养有机体
- The more trophic levels there are in a food chain or web, the greater is the cumulative loss of usable chemcial energy as it flows through the trophic levels. 当它流过营养水准时，在一个食物链或网中营养水准愈高，可使用化学的能源累积的损失也愈多。
- At each link in this food chain we can recognize three pathways to the next trophic level: decomposition, parasitism and predation. 在这种食物链的每一个连接，我们能够辨别出通向下一个营养级的三条途径：分解、寄生和捕食。
- a photosynthetic green plant or chemosynthetic bacterium,constituting the first trophic level in a food chain; an autotrophic organism 生产者，自养有机体，构成食物链上的第一级营养层次的可进行光合作用的绿色植物或化能合成的细菌；自养有机体
- food chain An abstraction describing the network of feeding relationships in a community as a series of links of trophic levels, such as primary producers, herbivores, and primary carnivores. 食物链营养阶层，例如初级生产者，草食动物，初级肉食动物，的一系列连结，形成一个食性关系网路的概要描述。
- The food chains extend to the abyss. 食物链一直延伸到深渊。
- The milkfish pond system is composed of limited trophic components and operated by simple food chains. 虱目鱼养殖 池可视为一封闭、完整的生态系，由单纯的生物及食物链所组成。
- These microscopic organisms are assigned a trophic level (TL) of 1. 这些微生物的营养级为1。
- Aquatic food chains are different from terrestrial ones. 水生食物链不同于陆地食物链。
- The feeding level an organism occupies in a food chain. 指处于食物链某一环节上的所有生物种之总和。
- Insects are fairly low down (on) the food chain. 在食物链中，昆虫是相当低的一级生物。
- Finally, the trophodynamics and pharmacokinetics of DDTs, HCB and PAHs were also investigated in this food web and the high trophic level animals. 在对二恶英类物质研究的同时，本研究调查了有机氯、六氯苯和多环芳烃类物质的食物网传递行为和高等生物体内的毒理动力学过程，得到了这些物质的食物网放大系数和代谢速率。
- Removal of SRMs from food chain. 从食品链中去除。
- Its roots are part of the food chain. 根部参与食物链。
- Ecologists assign every organism in an ecosystem to a feeding level,or trophic level,depending on its source of food or nutrients. 生态学家分配在生态系的每个有机体到一个哺养的水平或者食性层次，根据它的食物或营养素的来源。
