Biodiversité

Pour protéger ses récifs coralliens la Thaïlande a interdit l'utilisation de certaines crèmes solaire composés de produits chimiques qui détruisent le corail.

Tropical coral reefs are subject to multiple pressures from both natural and anthropogenic sources. These pressures have caused widespread declines in reef health, resulting in the increased use of spatial management tools such as marine protected areas (MPAs). MPAs have proven generally effective if well designed and enforced, but there are limited long-term studies investigating how the presence of small-scale MPAs affects fish populations and reef communities. Using a 12-year time series, we found that small-scale (10–50 ha) community-managed MPAs along the Danajon Bank of the Philippines preserved average fish biomass within their boundaries over time relative to surrounding fished reefs. Unprotected areas are, however, showing significant long-term biomass decline. MPAs were also found to preserve more key trophic groups and larger-bodied commercially targeted reef fish families.

L’Asie du Sud-Est recèle de nombreuses orchidées sauvages, dont certaines espèces ont été découvertes récemment. Des fleurs rares dont le trafic se développe via les réseaux sociaux.

Pourtant protégées par un traité international, les zones humides disparaissent trois fois plus rapidement que les forêts. Une catastrophe quand on sait que les zones humides sont capables de filtrer les polluants déversés en amont.

As both a flagship and umbrella species, the giant panda (Ailuropoda melanoleuca) is one of the most heavily invested species in conservation. Here, we report the wide distribution range retreat of the leopard (Panthera pardus, 81% loss), snow leopard (P. uncia, 38%), wolf (Canis lupus, 77%) and dhole (Cuon alpinus, 95%) from protected areas in the giant panda distribution range since the 1960s. The present findings indicate the insufficiency of giant panda conservation for protecting these large carnivore species and suggest that future conservation efforts should target restoring ecosystems with high trophic complexity to facilitate the recovery of large carnivore populations. Comparing historical records with contemporary camera trap surveys, the authors report widespread declines in the occurrence of four large carnivore species from protected areas within the distributional range of the giant panda.