biodiversity

Meeting in Manchester (United Kingdom), the plenary session of IPBES (Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services) ratified its Assessment on Business and Biodiversity, which presents data to understand the dependence and impact of businesses on nature and proposes more than 100 measures to improve the global situation. Three of its representatives explained the main results and proposals at a briefing organized by SMC Spain.

The claim that one type of tree—Picea abies—can anticipate a solar eclipse through electrical signals is based ‘on speculative interpretations and unsupported evolutionary assumptions,’ according to an opinion piece published in the journal Trends in Plant Science. The paper refutes another from 2025 that claimed these trees synchronised their bioelectrical behaviour hours before a solar eclipse in Italy's Dolomite region. According to the authors of the new article, this electrical activity can be explained by temperature changes and atmospheric electrical discharges.

An international team has analysed data from more than 700 mammal populations in zoos since 1970 and concludes that there has been an ageing of the animals and a decline in females of reproductive age. According to the authors, this jeopardises the role of zoos in conserving endangered wildlife species and promoting global biodiversity. The findings are published in the journal PNAS.

Since 2013, undeclared and uncertified exports of fins from five overexploited shark species have been illegal. Now, an international team has determined that illegal fins from four of those species remained prevalent in the market between 2015 and 2021. Among the countries cited as potential violators are Spain, China, and Taiwan. The study is published in the journal Science Advances.

Some ecosystems are able to adapt to moderate droughts, even if they last for several years. However, in scrublands and grasslands, when the phenomenon is extreme and prolonged, their capacity to store carbon plummets. This is the main conclusion of an international study that has assessed the effects of the duration and severity of droughts on the productivity of 74 grassland and pasture ecosystems on six continents. According to the authors, the most vulnerable areas are arid and semi-arid regions, such as those in the Mediterranean region and the southwestern United States. The study, published in Science, involves CREAF, CSIC and IICG-URJC, among other centres.

Extensive warm-water coral reefs are facing widespread mortality and, unless global warming is reversed, will be lost, warns the report Global Tipping Points 2025. This is the first tipping point reached by the Earth system, the first in a series of tipping points that will cause ‘catastrophic’ damage—melting ice sheets, death of the Amazon rainforest, and collapse of vital ocean currents—unless humanity takes urgent action. The report also identifies positive tipping points that have been crossed on a global scale, for example in the area of solar energy and the adoption of electric vehicles.

Four people have died in the fires that began last weekend on the Iberian Peninsula and have spread to different areas of Galicia, Castile and León, Andalusia, Castile-La Mancha, Extremadura and Madrid. The heatwave that continues to grip the country, strong gusts of wind and their changing direction, and the thermal drought are hampering firefighting efforts. The government declared on Tuesday a pre-emergency phase and thousands of people have had to be evacuated.

Extreme wildfires are becoming more frequent and causing greater environmental and social impact. Current policies that prioritise fire suppression have not only failed to prevent this situation from arising, but  actually made it worse. The report Changing Wildfires - Policy Options for a Fire-literate and Fire-adapted Europe,  released by the European Academies' Science Advisory Council (EASAC), addresses this issue by outlining eight policy options. The report's key recommendations focus on  putting landscape management first —by regulating biomass structure and land use — and empowering local communities.

Several areas in the region of El Bierzo in León and the province of Zamora have seen numerous forest fires in recent hours, forcing more than a thousand people from different municipalities to evacuate. One person has died. The flames have affected the Las Médulas natural area, listed by UNESCO as a World Heritage Site. Another fire in Tarifa (Cádiz) has forced the evacuation of hundreds of people, and also in Tres Cantos (Madrid), where one person died. In addition, there are active outbreaks in several areas of Galicia. The government declares a pre-emergency phase.

A team from Stanford University (USA) has analysed the conservation status of 1,376 species of scavenger animals. The results, published in the journal PNAS, indicate that 36% of them are threatened or in decline, especially large species and obligate scavengers, which depend exclusively on carrion for food. In contrast, the number of small and facultative scavengers, such as rodents, for which carrion is not their only source of food, is increasing. According to the authors, this ‘could increase the risks of diseases that large scavengers have helped to mitigate’.