Intempéries

Natural ecosystems store large amounts of carbon globally, as organisms absorb carbon from the atmosphere to build large, long-lasting, or slow-decaying structures such as tree bark or root systems. An ecosystem’s carbon sequestration potential is tightly linked to its biological diversity. Yet when considering future projections, many carbon sequestration models fail to account for the role biodiversity plays in carbon storage. Here, we assess the consequences of plant biodiversity loss for carbon storage under multiple climate and land-use change scenarios. We link a macroecological model projecting changes in vascular plant richness under different scenarios with empirical data on relationships between biodiversity and biomass. We find that biodiversity declines from climate and land use change could lead to a global loss of between 7.44-103.14 PgC (global sustainability scenario) and 10.87-145.95 PgC (fossil-fueled development scenario). This indicates a self-reinforcing feedback loop, where higher levels

Although humans have long been predators with enduring nutritive and cultural relationships with their prey, seldom have conservation ecologists considered the divergent predatory behavior of contemporary, industrialized humans. Recognizing that the number, strength and diversity of predator-prey relationships can profoundly influence biodiversity, here we analyze humanity’s modern day predatory interactions with vertebrates and estimate their ecological consequences. Analysing IUCN ‘use and trade’ data for ~47,000 species, we show that fishers, hunters and other animal collectors prey on more than a third (~15,000 species) of Earth’s vertebrates. Assessed over equivalent ranges, humans exploit up to 300 times more species than comparable non-human predators. Exploitation for the pet trade, medicine, and other uses now affects almost as many species as those targeted for food consumption, and almost 40% of exploited species are threatened by human use. Trait space analyses show that birds and mammals threaten

Backed by the UN, an alliance of conservationists and policymakers is devising new ways to finance the preservation of biodiversity by placing economic values on ecosystems. Some analysts say such schemes have the potential to boost conservation, but others are skeptical.

The steady destruction of wildlife can suddenly tip over into total ecosystem collapse, scientists studying the greatest mass extinction in Earth’s history have found. Many scientists think the huge current losses of biodiversity are the start of a new mass extinction. But the new research shows total ecosystem collapse is “inevitable”, if the losses are not reversed, the scientists said.

Negotiators hope to put humanity on a path to harmonious coexistence with nature by 2050.

Small patches of land given over to wildlife-friendly planting can make a big difference to pollinator conservation, a new study suggests. Bee and other pollinator populations in Europe and North America are in decline due to a range of factors including habitat loss and insufficient flowers for food.

Plusieurs universités, ONG, fédérations, administrations et sociétés privées ont lancé vendredi la "Belgian Biodiversity Alliance", une plateforme destinée à encourager et visibiliser les efforts pour restaurer la biodiversité, en déclin partout dans le monde. Cette Alliance, qui réunit notamment l’institut Jane Goodall, l’Université de Hasselt, l’Institut flamand de recherche sur la nature et la forêt (INBO), la direction générale Environnement du SPF Santé publique, Bruxelles Environnement ou encore le SPW Agriculture, entend rassembler citoyens, organisations, communes ou entreprises qui agissent pour infléchir la perte de biodiversité.

Industry groups representing some of the world’s largest companies are “opposed to almost all major biodiversity-relevant policies” and are lobbying to block them, according to a new report. Researchers found that 89% of engagement by leading industry associations in Europe and the US is designed to delay, dilute and block progress on tackling the biodiversity crisis, which scientists say is as serious as the climate emergency.

The summary for policymakers (SPM) and the chapters of the Methodological assessment regarding the diverse conceptualization of multiple values of nature and its benefits, including biodiversity and ecosystem functions and services (referred to as the “assessment of the diverse values and valuation of nature”), were approved and accepted respectively by the IPBES Plenary during its ninth session, held from 3 to 9 July 2022 in Bonn, Germany. The background of this assessment dates to 2013, when at its second session (IPBES 2) in Antalya, Turkey, the IPBES Plenary approved the initiation of scoping for a methodological assessment. During the third session of the IPBES plenary, in Bonn, Germany in 2015, the expert group established for scoping the methodological assessment and developing a preliminary guide, was requested to revise the scoping report for the methodological assessment based on comments received following an open review by Governments and stakeholders. At IPBES 4, in Kuala Lumpur, Malaysia in 2016

xit le bleu et le rouge. Inspirées des rayures du réchauffement, les "warming stripes", l'expert Miles Richardson a développé les rayures de la biodiversité allant du vert au gris, signe de la perte de couleur et de biodiversité de la nature. L'objectif est de focaliser l'attention sur le déclin de la biodiversité, un phénomène beaucoup moins couvert médiatiquement que le réchauffement climatique.