Etiqueta: drought

News

A year of respite for Catalonia’s forests

20 de March 2020Verónica Couto Antelo

With spring almost upon us, CREAF’s experts are reporting that this year could be a chance for Catalonia’s forests to recover from accumulated past droughts and the devastating effects of the pine processionary. There will be no let-up for the territory’s undergrowth, however, with the box tree moth’s continuing expansion leaving just 20% of box plants with new growth.

News

Trees’ risk of climate change-induced death is reflected in their wood

28 de January 2020Anna Ramon Revilla

According to a study led by the Spanish National Research Council (CSIC), the way trees have responded to drought in the past could be a key indicator of their risk of mortality. The study examined growth rings to compare that response in dead and surviving trees.

News

Satellites are overestimating vegetation’s ability to absorb atmospheric carbon dioxide

1 de May 2019Anna Ramon Revilla

According to an article by CREAF researchers Benjamin Stocker and Josep Peñuelas published in Nature Geoscience, drought impact studies based on satellite data do not factor in the effects of soil moisture.

News

‘Pampered’ trees are the most vulnerable to drought

26 de July 2018Giulio Nigro

Trees that have grown in highly suitable climatic conditions are less capable of dealing with extreme droughts, according to a study that underlines the importance of taking a forest's history into consideration when deciding how best to conserve and manage it.

News

If you don’t get the water, you won’t need it

1 de May 2018Jaume Terradas

Los Angeles and its great urban area (more than 18 million people) are in water suply problems since long time ago. At the begining of the 20th century, Owens Valley was drained among huge hiden economic interests that inspired the film Chinatown.

News

Thirsty holm oaks lose 21% more carbon through their roots

19 de January 2018Albert Naya i Díaz

Once rehydrated, holm oaks have a large capacity for recovery thanks to their high adaptation to the Mediterranean climate. The release of organic compounds into the soil represents a considerable loss of carbon for the holm oak and also modifies the microbial community, which may lead to additional effects on the tree.

News

How the forests of the Iberian Peninsula have changed over 25 years?

18 de December 2017Albert Naya i Díaz

The increase in drought episodes and the lack of water in the soil have favored Mediterranean species. At the same time, conifers are losing ground because they are less adapted to droughts. These trends correspond to the period of 1987 to 2012 and have been confirmed through satellite remote sensing images.

Knowledge

Tree herders

14 de October 2017Francisco Lloret

Some giant trees, such as cedars and redwoods, are an example of great longevity and their populations depend much more on tendencies than on specific traumatic episodes. Climate change and human pressures can put their survival at risk.

News

Do drought-affected trees die of thirst or hunger?

16 de August 2017Albert Naya i Díaz

A new study has concluded that, universally, trees that have died from drought are unable to transport water to their leaves. The findings also highlight trees that have drained their carbon reserves since they are not able to carry out photosynthesis. The results of the study will permit the creation of more precise models for predicting the effects of climatic changes on vegetation.

News

Trees with soft wood and thin leaves die of thirst more easily

13 de July 2017Verónica Couto Antelo

A study with the participation of researchers from CREAF and the UAB warns that increasing droughts could affect forests’ species composition and structure, making them more vulnerable.

Knowledge

The forest fate: winning time

6 de March 2017Francisco Lloret

What is the future that the Mediterranean forests expect? Climate change is already strongly felt and its impacts reach everywhere. Francisco Lloret tells the current situation and how we will have to prepare ourselves and forests to the coming changes .

News

70% of Mediterranean butterfly species are in decline

26 de September 2016Verónica Couto Antelo

CREAF researchers signal climate change and changes in land use as the principal causes. The most impacted are specialized species living in very specific habitats and those producing a number of generations in a single year. 

News

Using 3D animations to understand plant anatomy

22 de July 2016Verónica Couto Antelo

How does water move inside a tree? CREAF researchers are helping to demystify such topics using 3D images wich reconstruct the internal structure of tree branches and trunks, and further, deepening our knowledge on the transport of water and nutrients .

News

We are looking for a candidate for a doctoral fellowship about Phoenicean juniper and drought

24 de May 2016CREAF

We seek a candidate to apply for a 4 years doctoral fellowship to carry on in the CIBIO (Vila do Conde, Porto) and CREAF (Bellaterra, Barcelona) within the Doctoral Programme in Biodiversity, Genetics and Evolution (BIODIV), funded by the “Fundação para a Ciência e a Tecnologia” (Portugal).

News

Mathematics in the fight against forest drought

8 de February 2016CREAF

A study by CTFC and CREAF scientists has led to the development of a mathematical model which predicts drought stress in forests. The research shows that forest drought stress depends on climatic conditions as well as vegetation and soil characteristics. 

News

The tallest trees in tropical forests die from dehydration after extreme droughts

25 de November 2015Anna Ramon Revilla

According to a study co-led by CREAF staff published this week in the journal Nature, droughts caused by climate change could result in the death of the tallest tress in tropical forests. For the first time, the scientists have shown that after prolonged water deficit tall trees suffer embolisms in their circulatory systems and die of dehydration. 

News

Droughts alter microbial diversity of the land and increase CO2 emissions

14 de April 2015CREAF

Researchers from the UAB, CREAF and the National Museum of Natural Sciences (MNCN-CSIC) have analysed how the deterioration of woods caused by droughts associated to global warming are affecting the microbial composition of the soil and modifying carbon cycles.

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.

Knowledge

Forests endangered by climate change, international experts conclud

25 de November 2014CREAF

Forests cover one-third of the Earth’s land surface, and they provide many essential ecological, economic and social services. During the last decades, the scientific community has been alarmed by reports of widespread tree and forest mortality worldwide.

News

Fungi and drought, a potentially fatal cocktail for forests

5 de November 2014Anna Ramon Revilla

A new scientific article published by members of CREAF, the Autonomous University of Barcelona, and the Swedish University of Agricultural Sciences reveals that when a forest is attacked by certain fungi during an episode of drought, tree mortality multiplies. The article explains the two classes of fungi which benefit from situations of drought and how they colonize and end up killing trees through food and water starvation. 

News

BeWater project launched its first stakeholder Workshop

28 de May 2014Anna Ramon Revilla

The BeWater project launched its first series of meetings on 28 May in La Tordera, Catalonia, Spain. CREAF, the local case study leader, together with consortium partners, met key local stakeholders in order to introduce the project, hear local perspectives on the state of the river basin and discuss potential global change impacts.

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