单词 | daphnia |
例句 | The migration was first documented in the early 1800s, when naturalist Georges Cuvier noted that plankton called daphnia—water fleas—were disappearing and reappearing in a daily cycle in a shallow freshwater lake. The Ups and Downs of a Great Vertical Migration 2021-12-06T05:00:00Z Daphne, named after daphnia, a type of water flea, credited with helping clear the waters of Lake Washington of blue-green algae after sewage stopped regularly flowing into the lake in the 1960s. MudHoney? Sir Digs-A-Lot? Seattle wants your help in naming its next massive tunnel machine 2021-03-27T04:00:00Z There’s a consensus among scientists that for many creatures, including zooplankton like daphnia, the migration helps them avoid being eaten. The Ups and Downs of a Great Vertical Migration 2021-12-06T05:00:00Z |
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