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trophic level

/'trɒfɪk 'lɛvəl/

Definitie

position of organisms in a food chain ... See more

Vertaling van "trophic level" in Chinees

Definitie

NEW

营养级

营养水平

生态位

高食性层次

The highest concentrations were found in the toothed whale species which feed on a higher trophic level.

处于较高营养级的齿鲸种群的浓度最高。

Ecological processes that need to be taken into consideration include: physical processes, such as the movements of water, food and organisms by gravity, waves and currents; chemical processes, such as concentration and exchanges of gases and minerals; and biological processes, such as nutrient transfer from one trophic level to another.

需要考虑的生态过程包括：物理过程，如水、食物和有机物在重力、波浪和水流的作用下的移动情况；化学过程，如气体和矿物的富集和交换；生物过程，如营养物质从一个营养级传送至另一个营养级。

However, determining the trophic level of many plankton is not always straightforward.

然而，确定许多浮游生物的营养水平并不总是直截了当的。

The toxicity data concerning the most sensitive species in each trophic level were used.

考虑到不同的营养水平，使用了对于最敏感物种的毒性数据。

If adequate chronic toxicity data are available for one or two trophic levels, it should be examined if acute toxicity data are available for the other trophic level(s).

如果已经掌握一个或两个营养水平的充分的慢性毒性数据，应检查是否有其他营养水平的急性毒性数据。

High concentrations of SCCPs in upper trophic level organisms, notably in marine mammals and aquatic freshwater biota, are additional evidence of bioaccumulation.

短链氯化石蜡在较高营养级生物体内表现出了很高的浓缩度，特别是哺乳动物和水生淡水生物群（例如白鲸、环斑海豹和各种鱼类），这些都为生物积累现象提供了额外的佐证。

The results indicate that the higher trophic level mammals may be at risk at current environmental concentrations of PFOS.

结果表明，目前的全氟辛烷磺酸环境浓度会使高营养级哺乳动物面临风险。

Calculated BMFs were low, suggesting many congeners are excreted or eliminated at higher trophic level.

计算出的生物放大系数不高，表明很多同系物已在更高营养级被排泄出去或消解。

Summed up, biomagnification is affected by many parameters such as contamination in biota, and consequently of food (prey), the trophic level and the ability to biotransform alpha-HCH.

总结来看，生物放大性受很多变量的影响，诸如生物群的污染、食物的污染（猎物）、营养级和生物转化甲型六氯环己烷的能力。

The results showed that the trophic level of Lake Taihu was in the transition state, from meso-eutrophic to eutrophic, of which the meso-eutrophic made up about 70% of the total are.

结果表明，太湖营养水平处于中富向富营养过渡状态，中富面积约占全湖面积的70%以上；

The studies show an increase of concentrations in biota with increasing trophic level in pelagic and Arctic food webs.

这些研究表明，随着水生食物网和北极食物网营养水平的升高，生物群中五溴二苯醚的浓度也在提高。

An ecological pyramid (also trophic pyramid, eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem.

能量塔（又称能量金字塔；英文：Ecological Pyramid或Trophic pyramid）是某生态系统中各营养级所占的生物质能或拥有的生物质能生产力的图形表示，用来表达各级之间生物能量的传递关系。