| 词汇 | plankton |
| 释义 | plankton noun[ U ] uk /ˈplæŋk.tən/ us /ˈplæŋk.tən/ very small plants and animals that float on the surface of the sea and on which other sea animals feed（海洋）浮游生物 CHOKSAWATDIKORN/SCIENCE PHOTO LIBRARY/GettyImages Water & marsh plants, bushes & trees algae algae bloom Andromeda bacopa bladderwort flag iris green alga gulfweed haidai kelp peppergrass phytoplankton pickerel weed pond life pond lily sea lettuce seagrass seaweed sedge sphagnum plankton | American Dictionaryplankton noun[ U ] us/ˈplæŋk·tən/ biology, earth science very small organisms that float in water, esp. near the surface, and are food for fish and other animals that live in water Examples of planktonplankton Most of the bacterial cells are within the aggregates, with a smaller number of plankton cells visible in the images. On all four sampling dates, copepods (adults and copepodites) dominated the plankton, with 63.4-96.1% of the plankton numbers, followed by nauplii (2.7- 34.3%). Progress will require interdisciplinary research involving physical oceanographers, fish behavioural and plankton biologists. The linkages amongst the biological components, namely plankton, periphyton, rice and fish, within the system provide an insight into understanding the whole production process. Essentially, the di#erent shades indicate di#erent depths and concentrations of plankton, the darker ones indicating lower concentrations. In contrast, radiolaria represent the main component of the plankton assemblages across the upper black levels. After 1952 the plankton hauls were discontinued because they were considered too hazardous. Thus, these short-lived plankton at and near the base of the oceanic food web have generally adopted "specialist plus dispersal" life-history strategies. The multichannel character of the instrument allows the mapping of many more gases such as methane, formaldehyde, carbon monoxide, carbon dioxides and even plankton indexes. These visits and the work of his research students were the basis for papers on primary production and on plant plankton. Outbreaks of the disease are related to plankton blooms associated with warmer sea surface temperatures. The local forecasts were important for the safety of the ship during relief operations, and of the boats when landing field parties or making plankton hauls. Parasite transmission in plankton-feeding forage species, primarily capelin, and top-level predators, including cod, was probably interrupted. Occasional plankton blooms were usually small (10-15 km across) and separated by large areas of low biomass. However, plankton possess relatively modest escape abilities, whereas active prey such as minnows provide a more challenging target that allows examination of visual integration with motor behavior. 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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