Phenology

In a situation of global warming, phenology becomes essential scientific knowledge to understand the environment’s behaviour in the medium and long term. Beyond changes as ephemeral and visible as the evolution of the colour of tree leaves, phenology studies the relationship between the cycles of living beings and the climate, linked to the annual course of meteorology in a specific place.

Wind dynamics need to be factored into studies that measure the impact of climate change on the rhythms of nature. A study published in PNAS and co-authored by CREAF-based CSIC researcher Josep Peñuelas concludes that a decline in winds is currently benefiting plant productivity.

A study involving three CREAF researchers has found that plants with low nitrogen and phosphorus concentrations in their leaves do not reproduce every year to enable them to reproduce on a huge scale in years in which conditions are right. Oaks, holm oaks and beeches are examples of trees that behave in such a way.

At this time of year, deciduous trees across Europe are losing the last of their leaves. When will they come into leaf again? A study just published in Nature Communications has shown that while year-to-year leafing date variations can be explained by heat accumulation, local climate is a key factor in geographical variations.

A study just published in the scientific journal Nature Communications presents worrying results on animals’ adaptation to climate change. It concludes that while species are changing some aspects of their lives in response to global warming, they are not doing so quickly enough and do not always make the right changes.

Plants' annual growing season has lengthened, exposing them to frost more often at a time when they are particularly sensitive. That can be detrimental to their activity and lead to substantial crop yield losses.

CREAF and the companies Altran and Starlab have led the design of RitmeNatura.cat, a citizen observatory that encourages members of the public to ‘adopt’ a plant, record the changes it undergoes and provide data that can be used to study the effects of climate change.

Climate experts, botanists, geographers and ecologists from CREAF and the Autonomous University of Barcelona (UAB) will train citizens to monitor seasonal changes which can be observed in nature. This way citizens will be able to help the scientists study the effects of climate change on animals and plants. Flower emergence, the dropping of leaves, or the arrival of certain birds will be some of the changes to be studied. Once trained, citizens will be able to contribute to European and Spanish phenology observation networks.

A study led by a CREAF-CSIC researcher has outlined a new methodology for describing changes in the life cycle of plants caused by planetary warmingwith higher precision. Daytime, rather than nocturnal temperatures determine phenological changes. The increase in temperatures, leading to an earlier spring, alters the global functioning of ecosystems.