Last year the Christmas Island shrew, slender-billed curlew, and three Australian bandicoots were among the species formally declared extinct. None has been seen in at least 30 years, but bureaucracy takes a while. They may be joined in the next decade or so by the vaquita and the Sumatran rhino. A child born today may grow up knowing them through archival footage of the last few animals or AI-generated simulations. But biodiversity loss isn’t only about species extinction. The death of a single elder elephant can have consequences for the entire herd. Her knowledge of water sources, for example, can be critical in a drought. And the disappearance of that herd can have knock-on effects on a forest. Seeds lose their dispersal mechanisms, and clearings maintained by elephants may fill in. The result is a less resilient ecosystem even if the change isn’t immediately apparent. Forest elephants in Dzanga Bai, Central African Republic. Image by Rhett A. Butler/Mongabay. Delegates gathering in Yerevan, Armenia, for the U.N.’s COP17 biodiversity talks will assess countries’ progress toward goals to slow these kinds of losses. Under the Kunming-Montreal biodiversity framework, adopted in 2022, governments pledged to conserve 30% of land and seas by 2030 and restore degraded ecosystems. Only four years remain before that deadline. The previous agreement doesn’t inspire much hope: not a single one of the 20 Aichi biodiversity targets had been fully achieved globally by 2020. Implementation of these agreements is also entirely at the mercy of whoever holds office.…This article was originally published on Mongabay