NEW YORK — Newly released international climate assessments have highlighted significant changes in the world's oceans and forests, with United Nations reports warning of mounting environmental pressures while noting some progress in conservation and management efforts.
The findings, published in recent weeks and discussed by officials on Monday, come from the United Nations' Third World Ocean Assessment and the Global Forest Goals Report 2026. The reports examine trends in marine ecosystems and forest resources and are intended to guide policymakers ahead of international climate and biodiversity discussions.
The World Ocean Assessment, compiled by approximately 600 experts from 86 countries, said the marine environment remains under increasing stress from climate change, pollution, biodiversity loss and human activity. The report found that ocean heat content has continued to rise, sea levels are increasing at a faster rate than in previous decades, and marine ecosystems face growing pressure from multiple factors.
“The third World Ocean Assessment documents a deepening crisis driven by climate change, overfishing, biodiversity loss and marine pollution,” United Nations Secretary-General António Guterres said in remarks accompanying the report's release.
The assessment also reported that large areas of the ocean remain poorly understood, with only about a quarter of the seafloor mapped as of 2025. Scientists involved in related studies have reported evidence of nutrient stress in parts of the global ocean and continuing changes in marine ecosystems linked to warming waters.
Separately, the Global Forest Goals Report 2026 said progress has been made in areas including forest monitoring, restoration efforts and protected forest management. However, the report stated that overall progress remains insufficient to meet internationally agreed forest-related goals by 2030. According to the United Nations, global forest area declined by more than 40 million hectares between 2015 and 2025 despite ongoing conservation initiatives.
“Forests are essential to achieving the Sustainable Development Goals, from climate action and biodiversity conservation to food security and resilient livelihoods,” said Bjørg Sandkjær, according to the report.
The forest assessment identified land-use change, climate impacts, wildfires, pests and illegal activities among continuing threats to forest ecosystems. It also pointed to financing gaps and implementation challenges facing governments and conservation organizations.
United Nations officials said both reports underscore the importance of international cooperation and environmental monitoring. As of Monday, governments and environmental agencies were reviewing the findings, while discussions on future climate, forest and ocean policies continued through international forums and treaty processes.
