New research shows that lake "stratification periods" – a seasonal separation of water into layers – will last longer in a warmer climate. These longer periods of stratification could have "far-reaching implications" for lake ecosystems, the paper says, and can drive toxic algal blooms, fish die-offs and increased methane emissions.

The ocean contains unique biodiversity, provides valuable food resources and is a major sink for anthropogenic carbon. Marine protected areas (MPAs) are an effective tool for restoring ocean biodiversity and ecosystem services1,2, but at present only 2.7% of the ocean is highly protected3. This low level of ocean protection is due largely to conflicts with fisheries and other extractive uses.

The rate at which the world’s forests are being destroyed increased sharply last year, with at least 42,000 sq km of tree cover lost in key tropical regions.According to data from the University of Maryland and the online monitoring platform Global Forest Watch, the loss was well above the average for the last 20 years, with 2020 the third worst year for forest destruction since 2002 when comparable monitoring began.

17,6% des espèces évaluées sont menacées en France, d’après la liste rouge élaborée par l’Union internationale pour la conservation de la nature (UICN),

At the global level none of the 20 targets have been fully achieved, though six targets have been partially achieved (Targets 9, 11, 16, 17, 19 and 20). Examining the 60 specific elements of the Aichi Biodiversity Targets, seven have been achieved and 38 show progress. Thirteen elements show no progress or indicate a move away from the target, and for two elements the level of progress is unknown. The table on the following pages provides an overview of the progress made towards each of the 20 Aichi Biodiversity Targets.

the same 15 crops that accounted for 85 percent of total harvested area in 1994 continued to account for approximately the same share of total harvested area in 2012

The Joint Nature Conservation Committee put it unequivocally:“The EU plays a crucial role in developing policy and legislation to protect the environment and meet its objective for sustainable development. The EU has specific targets for biodiversity conservation with legislative protection for key habitats and species”.The committee makes two other points:“The EU and global biodiversity targets are partly delivered through a range of legislative measures, which place obligations on Member States to protect biodiversity and the natural environment. The EU and Member States have shared legal competence—shared responsibility—in forming and implementing legislation for the environment”.