Navigation Links
Tortoise populations can withstand fires every 30 years
Date:7/19/2011

Populations of spur-thighed tortoises (Testudo graeca), a species classified as vulnerable and at risk of extinction, can withstand fires if outbreaks occur once every three decades or more. However, the youngest tortoises are more vulnerable, and disappear after each fire. These are the results of a study by Spanish researchers, who analysed the impact of a 2004 forest fire in the Sierra de la Carrasquilla mountains in Murcia (Spain) on these reptiles.

"Tortoises can withstand high temperatures, but this does not mean their shells are completely fire proof", Ana Sanz-Aguilar, lead author of the study, tells SINC. Currently a postdoctoral scholar at the Centre for Functional and Evolutionary Ecology in Montpellier, France, she collaborated with the Miguel Hernndez University (UMH) and the Mediterranean Institute for Advanced Studies (IMEDEA-CSIC) for this research.

One such forest fire occurred on 1 August 2004 in the Sierra de la Carrasquilla mountains in Murcia, Spain, which incinerated a 250-hectare area that was home to a large population of these reptiles. The researchers have been studying the behaviour of more than 1,000 of the animals over the past decade.

The study, published in the journal Biological Conservation, shows that the tortoises' response to fire varied greatly according to their age, with the fire killing 100% of the animals aged under four and causing increased mortality rates of 62% in sub-adults (aged from 4 to 8) and 12% in adults (over 8 years of age).

"For the dynamics of this species, a 12% increased mortality rate among adults is more serious than the disappearance of all the young tortoises", says Sanz-Aguilar.

According to the study, the viability of populations of these animals depends on low mortality rates and longevity among adult individuals. Any factor that causes an increase in adult mortality, such as greater vulnerability to forest fires in rocky environments,
'/>"/>

Contact: SINC Team
info@agenciasinc.es
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Madagascars radiated tortoise threatened with extinction
2. New study shows how giant tortoises, alligators thrived in High Arctic 50 million years ago
3. In the race of life, better an adaptable tortoise than a fit hare
4. Giant tortoises show rewilding can work
5. Snakes, salamanders and other creatures thrive in areas with higher deer populations
6. Shifts in soil bacterial populations linked to wetland restoration success
7. Lake Michigan fish populations threatened by decline of tiny creature
8. You dont call, you dont write: Connectivity in marine fish populations
9. U of Minnesota-led study finds that hunters are depleting lion and cougar populations
10. Changing the course of nature: Are fisheries directing the evolution of fish populations?
11. Commercial fishing endangers dolphin populations
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Tortoise populations can withstand fires every 30 years
(Date:9/30/2014)... Researchers of Ludwig-Maximilians-Universitaet (LMU) in Munich report that ... cells more sensitive to chemotherapeutic drugs. They have ... a new target for anti-tumor agents. , ... Professor Stephan Sieber of the Technische Universitt Mnchen ... a potential new weapon in the fight against ...
(Date:9/30/2014)... is available in German . ... behavioural response to risky situations such as exposure to ... now found in a long-term study on different populations ... metabolic rate and ambient temperature. High metabolic rates and ... in these scenarios birds were more likely to approach ...
(Date:9/30/2014)... 2014) People who suffer from asthma may think ... their asthma besides properly taking medications and avoiding allergic ... the Annals of Allergy, Asthma and Immunology , ... Asthma and Immunology (ACAAI), asthma sufferers can learn lessons ... woman described in the Annals article improved her asthma ...
Breaking Biology News(10 mins):Cancer therapy: Driving cancer cells to suicide 2Risky metabolism 2Asthma symptoms kicking up? Check your exposure to air pollution 2
... study, scientists sampled the presence of 20 species of ... in the Adirondack Park. Calculating their occurrence at increasing ... are 36 percent more likely to occur near the ... that "human-sensitive" species were 26 percent less likely. Beyond ...
... of Nottingham has been used in a breakthrough study ... fully functioning fetal heart. The abdominal fetal ECG ... of Electrical and Electronic Engineering and on commercial sale ... company Monica Healthcare Ltd, has been used to observe ...
... to replace artificial preservatives in bread, making it tastier., ... mould fermented in sourdough bread, Michael Ganzle, professor and ... of Agricultural, Food and Nutritional Science and fellow researchers ... keep bread fresh without changing its flavour. Preservatives ...
Cached Biology News:WCS Adirondack Park study shows exurban residences impact bird communities up to 200 meters away 2WCS Adirondack Park study shows exurban residences impact bird communities up to 200 meters away 3Nottingham technology in heart development breakthrough 2Nottingham technology in heart development breakthrough 3Nottingham technology in heart development breakthrough 4
(Date:9/30/2014)... 2014 Rainbow Scientific, Inc. (RSI), ... recently opened an online store to add customer ... lines developed and manufactured by Biological Industries, Inc. ... Biological Industries’ Nutristem® serum-free, xeno-free reagents for human ... cell (hESC) culture. , The online store ...
(Date:9/30/2014)... New Jersey (PRWEB) September 30, 2014 ... it has been chosen by the Parenteral Drug ... (November 18 and 19, 2014) on container closure integrity ... container closure integrity test methods and philosophies detailed in ... – Integrity Evaluation. The course will span ...
(Date:9/29/2014)... 2014 Each year in the ... medical attention. In the military, burn injury is ... battlefield medical care. More than 800 service members ... wounds heal slowly, remain inflamed and often become ... debilitating and functionally damaging. While developments in supportive ...
(Date:9/29/2014)... BEACH, Va. , Sept. 29, 2014 /PRNewswire-USNewswire/ ... from the fields of cartilage repair, regeneration, allograft ... attendees from around the world gathered to discuss ... LifeNet Health Institute of Regenerative Medicine symposium, ... Direction . Topics included Orthopedic Biosurgery, Minced Juvenile ...
Breaking Biology Technology:Rainbow Scientific, Inc. opens online store for state-of-the-art stem cell culture and cytogenetic reagents 2Whitehouse Laboratories to Partner with PDA for Educational Course on Container Closure Integrity Testing 2Whitehouse Laboratories to Partner with PDA for Educational Course on Container Closure Integrity Testing 3Whitehouse Laboratories to Partner with PDA for Educational Course on Container Closure Integrity Testing 4Faster Healing with Fewer Scars 2World Renowned Experts Discuss Future Of Cartilage Regeneration 2World Renowned Experts Discuss Future Of Cartilage Regeneration 3
... 19 Abbott (NYSE:,ABT) will announce its 2008 third-quarter ... opens., The announcement will be followed by a ... Central time (9 a.m. Eastern), and will be,accessible through ... archived edition of the call will be,available after 11 ...
... China, Sept. 19 /Xinhua-PRNewswire-FirstCall/ --,China-Biotics, Inc. (OTC ... Chinese firm specializing in the manufacture,research, development, ... that at its 2008 Annual General Meeting ... the Company,s nominees to the,Board of Directors., ...
... Quarter 2008 Earnings Conference Call Tuesday, October 28, 2008, 5:00 ... p.m. U.S. EDT, FRAZER, Pa., Sept. ... quarter 2008 results for 5:00 p.m. EDT on Tuesday,October 28, 2008., ... October 28, 2008 Schedule, 4:10 p.m. EDT Q3 2008 results ...
Cached Biology Technology:China-Biotics, Inc. Announces Results of 2008 Annual General Meeting of Shareholders 2
...
... Ribonuclease III (RNase III) from E. ... double-stranded RNA (dsRNA) to dsRNA fragments that ... dsRNA results in dsRNA fragments of 12-15 ... RNA composed of canonical ribonucleotides as well ...
...
Alexa Fluor 647 anti-mouse Qa-2...
Biology Products: