Other projects, such as Peru's plans to dredge rivers to improve navigability, could
exacerbate the ecological impact by changing flows, disturbing spawning sites, and disrupting the river - forest connection, says Fabrice Duponchelle of the French Institute of Research for Development in Marseille.
Policy decisions made during this window are likely to result in changes to Earth's climate system measured in millennia rather than human lifespans, with associated socioeconomic and
ecological impacts that will
exacerbate the risks and damages to society and ecosystems that are projected for the twenty - first century and propagate into the future for many thousands of years.