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.

A wildfire racing across a hillside has become emblematic of climate change. And for good reason: a quarter of the world’s natural landscapes now face longer fire seasons as a result of warming and shifts to rainfall, according to a recent landmark climate report.

A new study describes a period of rapid global climate change in an ice-capped world much like the present—but 304 million years ago. Within about 300,000 years, atmospheric carbon dioxide levels doubled, oceans became anoxic, and biodiversity dropped on land and at sea.

Our study assessed whether the opportunity to see many vertebrate animal species mattered to tourists visiting Costa Rica, and if so, how important it was compared with other features like hotels and beaches. in Costa Rica, our research shows that biodiversity needs to be paired with infrastructure like hotels and roads that enable access to nature.

The Working Group II contribution to the IPCC Sixth Assessment Report assesses the impacts of climate change, looking at ecosystems, biodiversity, and human communities at global and regional levels. It also reviews vulnerabilities and the capacities and limits of the natural world and human societies to adapt to climate change.

Volgens een nieuw rapport van Finance for Biodiversity (F4B) leveren milieumisdrijven jaarlijks tot 280 miljard dollar op. De regels om die vorm van criminaliteit te bestrijden zijn er, zegt Simon Zadek, voorzitter van F4B, maar regeringen treden niet krachtig genoeg op. ‘De financiële gemeenschap zou goed aan doen zich in te zetten voor een proces waarbij beleggingsportefeuille worden ontdaan van banden met milieucriminaliteit’.

“Putting biodiversity on a path to recovery is a defining challenge of this decade.” So begins the Kunming Declaration on biodiversity, adopted at the 15th UN biodiversity conference on October 13 2021, otherwise known as COP15.

The UK is one of the world's most nature-depleted countries - in the bottom 10% globally and last among the G7 group of nations, new data shows. It has an average of about half its biodiversity left, far below the global average of 75%, a study has found.

Europe’s 25 largest banks are still failing to present comprehensive plans that address both the climate crisis and biodiversity loss, putting their sustainability pledges in doubt, campaigners have warned.

The UN General Assembly in September, 2021, will bring countries together at a critical time for marshalling collective action to tackle the global environmental crisis.

Climate change is a critical factor affecting biodiversity. However, the quantitative relationship between temperature change and extinction is unclear. Here, we analyze magnitudes and rates of temperature change and extinction rates of marine fossils through the past 450 million years (Myr). The results show that both the rate and magnitude of temperature change are significantly positively correlated with the extinction rate of marine animals.