查询词典 trophic level

No significant correlation was found between the density of other taxa and the trophic level.

大型底栖动物的物种多样性与营养水平呈显著负相关。

The percentage of usable chemical energy transferred as biomass from one trophic level to the next is called ecological efficiency .

可用的百分比化学能量转移的生物质从一个营养级的下一个被称为生态效益。

The relationship between T. chinensis and the trophic level of the lake water was also discussed.

霍甫水丝蚓的密度与水体营养水平呈显著正相关，这与其能容忍由于水体富营养化而导致的较低溶氧水平有关。

Producers are often referred to as being in the first trophic level and are called autotrophs by the heterotrophs.

生产者通常被称为第一营养级，被异养称为自养。

About two-thirds of the world's people survive primarily by eating wheat rice , and corn at the first trophic level , mostly because they cannot afford meat .

大约有三分之二的世界人口主要生存是由吃小麦大米，玉米在第一营养层，主要是因为他们负担不起肉。

Each trophic level in a food chain or web contains a certain amount of biomass,the dry weight of all organic matter contained in its organisms.

每个营养级的食物链或网页含有一定量的生物量，干重的所有有机物质在其生物体。

Producer The first TROPHIC LEVEL, in a food chain.

生产者：食物链中第一个营养级。

Based on sampling and analysis of ecological Characteristics,we compared the physical factors,nutrients and phytoplankton structure of Gongping Reservoir and Xing Lake ,which were similar in trophic level and water depth.

在采样和测定分析的基础上，对营养盐水平和水深较为接近的公平水库和星湖的生态特征进行对比分析。

Micrura and C. vicinus, were related to increased trophic level of the lake water.

浮游甲壳动物群落体长的上升由优势种体长的上升所导致，其中微型裸腹溞与近邻剑水蚤体长的上升与水体营养水平的上升关系密切。

A trophic level is ab ecological category that includes organisms with the feeding style.

一个生物营养级是指一个生态种类，这个生态种类包括某一特定的有机体及其捕食的风格。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。