| 单词 | trophic level |
| 释义 | trophic level noun[C] biology,environmentspecializeduk/ˌtrɒfɪk ˈlevəl/us/ˌtrɑː.fɪk ˈlevəl/any of thelayersof anecosystemwith the samepositionin thefoodchain 摄食阶层，食物阶层Animal & plant biology - general words
Examplesoftrophic leveltrophic level On feeding on more than onetrophiclevel. From theCambridge English Corpus Dotted lines indicate estimated trophic levels, assuming atrophiclevelfractionation of 3.4 units. From theCambridge English Corpus An additionaltrophiclevelmight include birds, which prey on snakes, but these were not sampled in this study. From theCambridge English Corpus However, an additionaltrophiclevelmay exist which includes medium-sized mammals preying on snakes. From theCambridge English Corpus However, these studies did not measure the effects of nitrogen on the thirdtrophiclevel, the parasitoid. From theCambridge English Corpus The distribution of spiders may be less affected by the distribution of plant species, because they are onetrophiclevelfurther away from the defence chemicals of plants. From theCambridge English Corpus This is crucial because the effects of these resistance factors are also likely to be manifested in the thirdtrophiclevel, that is, on natural enemies. From theCambridge English Corpus The aim of the present study is to quantify levels of diversification of an endemic snail fauna that represents one of the major components of the metazoan consumertrophiclevel. From theCambridge English Corpus Because of itstrophiclevelposition, the golden topminow also has a wide array of predators that feed on smaller, surface feeding vertebrates. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.However, determining thetrophiclevelof some plankton is not straightforward. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The article establishes the importance of the meantrophiclevelof fisheries as a tool for measuring the health of ocean ecosystems. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The biodiversity of the phytoplankton is poor and its biomass is low, thus the lake'strophiclevelranges from oligotrophic to mesotrophic. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.There is also pyramid of numbers which represent the number of organisms in eachtrophiclevel. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.For example, all birds have beaks and skeletons, which despite having mass are not eaten by the nexttrophiclevel. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Since animals are higher on thetrophiclevel, they are less efficient sources of food energy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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