Lake Tahoe’s best clarity in 40 years is the work of this ‘natural clean-up crew’
2023年4月13日小于 1 分钟
Lake Tahoe has attained
a clarity
that scientists haven’t seen in 40 years – and it’s all because of a microscopic
animal acting as a “natural clean-up crew” to restore the clear blue waters. On Monday, researchers from the UC Davis Tahoe Environmental Research Center (TERC) released their annual report showing that the lake’s average visibility in 2022 was at 71.7ft – compared with 61ft in 2021 – which was largely due in part to a spike
in clarity in the last five months of the year. The dramatic
change can be attributed to an uptick
in the concentration
of zooplankton
.
tips
clarity:清晰
microscopic:微小的
spike:尖峰物;钉子
uptick:上升
concentration:集中;专心
dramatic:戏剧性的
zooplankton:浮游动物