Etiqueta: GEU

News

The greening of the earth is reaching its limit

19 de September 2017Albert Naya i Díaz

A new study led by Josep Peñuelas and published in Nature Ecology and Evolution reveals that CO2 abundance in the atmosphere no longer has a powerful fertilizing effect on vegetation. The greening that has been observed in recent years is slowing and this will cause CO2 levels in the atmosphere to rise, thus increasing temperatures and leading to increasingly severe changes in climate.

News

Humans are causing mass movements of bacteria around the world

15 de September 2017Anna Ramon Revilla

In an article in the journal Science, Josep Peñuelas warns that we must immediately begin studying the changes we are causing in the microbial world, improve water treatment systems, and change crop fertilization practices. 

News

Climate change is already threatening the Mediterranean ecosystems of Catalonia

19 de July 2017Albert Naya i Díaz

An extensive review of studies and databases reveals that drought and an increase in temperature are already causing species substitutions, greater aridity, higher forest fire risk, lower soil fertility, and lower water availability, among other negative impacts.

News

Achieving the COP21 agreements is currently far-fetched

9 de June 2017Albert Naya i Díaz

The COP21 set the maximum temperature increase for 2100 at 1.5° C. The only scenario which would allow achievement of this goal would require vastly reducing human CO2 emissions, significantly increasing the prominence of renewable energies, and the use of some type of artificial carbon sequestration technology.

News

Plants absorb pharmaceuticals and personal-care products carried by irrigation water

18 de May 2017CREAF

Pharmaceutical and personal-care products for human and animal use are increasingly released into the environment. 

News

Plausible rice yield losses under future climate warming

3 de April 2017CREAF

Josep Peñuelas leads a study which suggests that rice yield will be more senstive to climate warming. Adaptatation polices to climate change are urgently needed to reduce its effect on rice yield.

News

Phosphorus, once only a nutrient, has become a contaminant on a global scale

17 de March 2017Albert Naya i Díaz

Freshwater ecosystems near densely populated areas have levels of phosphorus which are very high and out of balance with nitrogen levels. This has resulted in altered ecosystem functioning, lower water quality, and has made water conservation more difficult.

News

Remote sensing of leaf pigments will improve climate change models

7 de February 2017Albert Naya i Díaz

An international team of researchers co-led by Josep Peñuelas (CSIC and CREAF) has developed a new method for monitoring changes in the photosynthetic activity of perennial conifers throughout the year. This new technique, based on the analysis of remote sensing images captured by satellites, will improve global models of atmospheric carbon capture and permit more precise predictions about climate change.

News

The loss of soil carbon can accelerate climate change

1 de December 2016Albert Naya i Díaz

The journal Nature has today published a study which had the participation of CSIC scientists at CREAF, Marc Estiarte and Josep Peñuelas, which demonstrates the relationship between the release of carbon from soils and the acceleration of climate change.

News

Josep Peñuelas receives an Honoris Causa from the University of Estonia

4 de October 2016Verónica Couto Antelo

CSIC and CREAF researcher Josep Peñuelas has received an honorary doctorate degree from the Estonian University of Life Sciences for his studies on global change. The university council considers his studies as excellent, and also values his international collaboration with Estonian researchers. The presentation of the award took place on September 23rd in the city of Tartu.

News

When the spring is warm and dry, seed production is increased in forests across Western Europe

31 de August 2016Albert Naya i Díaz

The North Atlantic Oscillation (NAO), an important atmospheric phenomenon affecting the meteorology of the whole of Europe, impacts the quantity and timing of seed production in the continent's forests. When the NAO favors a dry and warm spring, most of the studied forests produced more seeds and this is also done in a more synchronized manner.  

Knowledge

Peñuelas, awarded with Margalef Prize

21 de July 2016Jaume Terradas

In the prizes to the trajectory of a scientist, people say , the hardest is to begin, because after the first award, the winner can be pretty sure that others will come. Maybe, but there are different categories of prizes. Josep Peñuelas is starting to get the big ones, those that he deserves by his contributions to ecology, his dedication and his ability to empathize in order to establish fruitful relationships with scientists all around the world.

News

Catherine Preece: “It is possible for women to work in science, but there are still barriers”

6 de May 2016Verónica Couto Antelo

We interview Catherine Preece, PhD in biological studies and specialist on sub-arctic vegetation. Dr. Preece carried out her first post-doc at the University of Sheffield on agriculture-related themes. The Marie Curie grant awardee is currently doing her second post-doctoral stay in Catalonia, where she is now focusing on drought effects in Mediterranean forests. Our conversation covered a number of topics, including: what is the role of climate change? What does the future hold for our forests, and how can we contribute to their conservation? 

News

The treeline in Tibet increases slower than temperatures

27 de April 2016Albert Naya i Díaz

The forest treeline shifts upward slower than temperature increase, and it can be hindered by densification of shrubs. A number of factors influence upward forest expansion, including the particular plant species growing near trees, climate change, human activity, and terrain morphology. The Tibetan Plateau, practically devoid of human pressures, offers a pristine area for study 

News

The world has become greener over the past 33 years

26 de April 2016CREAF

Since 1982, Earth has become greener in an area covering 36 million km2, close to two times the size of the United States. Above all, this seems to be the result of a fertilizing effect of atmospheric carbon dioxide (CO2) on plants. The study was carried out with satellite images which can capture this increase in terrestrial leaf area.

News

CO2 absorption in European ecosystems depends on two major climatic phenomena

18 de January 2016Albert Naya i Díaz

The worst scenario occurs when NAO and EA are in opposite phases. This ocurred in the first few years of the previous decade and during this period, the CO2 uptake was below average. Recently, NAO and EA were in the same phase and ecosystems have been able to remove more carbon from the atmosphere.

News

Wood and leaf densities explain how forests function across the globe

24 de December 2015Albert Naya i Díaz

Understanding ecosystem dynamics can lead to greater benefits in forest management, species conservation, and carbon sequestration. A new study puts forward results which can be generalized for the whole globe and to 53,000 tree species thanks to the large quantity of data gathered and analyzed.

News

Agriculture and forestry increase the production world ecosystem biomass by 15%

6 de October 2015Marina Torres Gibert

CREAF has participated in an international study which has estimated the total biomass production of all planetary ecosystems. These data can be used to improve accounting of the global supply of natural resources and plan strategies for boosting the sequestration of atmospheric carbon.

News

The response of leaf unfolding phenology to climate warming has significantly reduced in Central Europe

23 de September 2015CREAF

Leaf unfolding occurred on average about 4 days earlier every one degree increase in spring temperature between 1980 and 1994, whereas this value dropped to -2.3 days C-1 between 1999 and 2013, a decrease of over 40%. According to this study recently published in the jorunal Nature with the participaction of Josep Peñuelas, researcher from CSIC at CREAF, warmer winters and photoperiod are forcing plants to control their phenology calendars.

News

Increased daytime temperatures is causing earlier leaf emergence

29 de April 2015Marina Torres Gibert

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.

News

The youngest ecosystems are those most sensitive to climate change

24 de March 2015Marina Torres Gibert

CREAF participated in a study which proposes that in order to understand the full impact of climate change, it is not enough to study just protected natural areas, which are mature and able to handle change; instead, it is important to focus on the study of those ecosystems which have been altered and are still recovering.

News

Scientists identify the 13 most important research challenges to face global change in the Mediterranean region

3 de February 2015J.Luis Ordóñez

Scientists consider it key to understand why droughts kill so many trees and the influence of local forest histories on tree mortality. They also warn that we know very little about the joined effects of different disturbances on each ecosystem, and highlight the necessity to plan research projects covering more time and space. 

News

Close to 50% of phosphorus emitted to the atmosphere is a result of human activities

15 de December 2014Anna Ramon Revilla

According to the study in which CREAF participated, China contributes 43% of this amount. For decades it had been thought that human activities were responsible for only around 5% of atmospherically-circulating phosphorus. More phosphorus in the air means more phosphors deposited on the ground. This can boost plant growth and the capacity to sequester atmospheric CO2; for that reason human activities may be altering the phosphorus and carbon cycles to a degree which was previously unknown

News

The fragrance of flowers depends on the fungi and bacteria that coat them

3 de December 2014Anna Ramon Revilla

A new study led by Josep Peñuelas, research professor at CREAF and the Spanish Council for Scientific Research (CSIC), has shown that if we do away with fungi and bacteria which live on flowers, the quantity and composition of their perfume will be changed entirely.

News

What will the future smell like?

22 de July 2014Anna Ramon Revilla

Researchers from CREAF, CSIC, and the Institute of Agricultural and Environmental Sciences of Estonia have found that flowers are becoming more fragrant as the global mean temperature rises. In addition, intense heat provokes changes in the composition of floral aromas, transforming the odors of natural areas. This could lead to pollinizers mistaking the identity of flowers, especially specialist species whose flower visits are guided by their own innate olfactory preferences.

News

Nutrient-rich forests absorb more carbon

7 de April 2014Anna Ramon Revilla

Thee ability of forests to sequester carbon from the atmosphere depends on nutrients available in the forest soils, shows new research from an international team of researchers,

News

CREAF awarded a Synergy Grant

18 de December 2013Anna Ramon Revilla

The team of Josep Peñuelas, researcher of CREAF and lecturer of the Spanish National Research Council (CSIC), was selected for a Synergy Grant, the prestigious grant offered by the European Research Council to projects by research groups of renowned excellence with interest in jointly solving vanguard research problems in the field of science.

News

The expansion of the Oaks “chokes” the forests of the Iberian Peninsula

6 de November 2013Anna Ramon Revilla

A study conducted by researchers at the CREAF and the Autonomous University of Barcelona demonstrates that many pine populations of the Iberian Peninsula are in decline. The study foresees a very unfavorable scenario for some pine species with predicted climate change, which would see the pines negatively affected by both the expansion of the holm-oak, as well as an increase in drought and fire.

News

Scientists study the chemical language of plants from the sky

10 de October 2013Anna Ramon Revilla

A study carried out by scientists at the CREAF and the CSIC has shown that the reflectance PRI index allows for the quantification of gasses emitted by plants in order to communicate or in situations of stress.  This index is calculated by measuring the light that vegetation reflects with the help of photosensors on planes or with satellite images.

News

Nightime global warming limites CO2 uptake by boreal flora

5 de September 2013Anna Ramon Revilla

Nightime temperatures on the planet have increased 1.4 times faster than daytime temperatures. This asymmetry alters carbon fluxes and plant growth in the northern hemisphere, according to a study in which the CREAF is participating.

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