Significant changes in phytolith assemblages occur at the same depth as four major tephra. indicating a sharp decline in trees and shrubs and a surge in grass and Cyperaceae.

植硅体组合在4个主要的火山灰层都发生了明显的变化，表现在树木和灌木的急剧下降及禾草类和莎草科的繁盛。

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The opera world has undergone major changes since then, and City Opera, still battling back from a near-death experience four years ago, continues to search for a distinctive contemporary identity, one that will attract sufficient audiences and donors to sustain it.

WSJ: Still Searching for the Promised Land | Moses in Egypt | New York City Opera | Opera Review by Heidi Waleson