请总结以下文本，三个句子以内

A group of researchers has recently been discussing the impact of climate change on various ecosystems. They have identified several key areas where climate change is having a significant effect, including changes in precipitation patterns, rising sea levels, and shifts in biodiversity. The researchers are particularly concerned about the long-term consequences of these changes, as they predict that many species may face extinction if global warming continues unabated. Additionally, they recommend urgent policy changes to mitigate these effects.
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研究人员最近讨论了气候变化对多个生态系统的影响，主要集中在降水模式变化、海平面上升和生物多样性转变等方面。他们特别担忧这些变化带来的长期后果，预测如果全球变暖持续，许多物种可能面临灭绝。为此，他们呼吁采取紧急政策措施来减缓这些影响。
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