Navigation Links
Why are there no hyenas in Europe?
Date:9/23/2010

A team from the National Museum of Natural Sciences (CSIC) has analysed the impact of climate change on spotted hyena survival in Europe over 10,000 years ago. These changes played an important role, but the scientists say studies are still needed to look at the influence of human expansion and changes in herbivorous fauna on the definitive extinction of this species across the continent.

"Climate change in the past was not directly responsible for the extinction of the spotted hyena in southern Europe, but it was a factor in its disappearance", Sara Varela, lead author of the study and a researcher at the National Museum of Natural Sciences (CSIC), tells SINC.

According to the study, which has been published in the Journal Quaternary Science Reviews, the hyena populations of Africa and Eurasia became separated during the glacial maximum. And "the climatic conditions in southern Europe 21,000 years ago were extreme for this species", says Varela.

At that time, the European climate was undergoing "drastic" changes, as were herbivorous fauna populations and human expansion. According to the expert, "the survival of the hyenas could have been affected by the combination of these three factors acting in synergy, but not by the action of the climate alone".

Her team studied climate change in the past and identified the most favourable areas for the hyena in Europe, using modelling to look at the various climate scenarios of the Pleistocene. A second model estimated the severity of climate conditions for the survival of these animals. "The climatic conditions in the south of Europe were at all times within the tolerance range of this species", Varela points out.

Everything happened in the late Pleistocene

The spotted hyena (Crocuta crocuta) became extinct at the end of the late Pleistocene (around 10,000 years ago), coinciding with the last glacial maximum and the expansion of Homo sapiens. Large species disappeared forever, but the spotted hyena held out for a while and modified its geographical range in order to survive.

The distribution of the spotted hyena, a carnivore that is common in sub-Saharan Africa, has changed "substantially" from the Pleistocene until the present. Today it is only found in Africa, but during the Pleistocene (almost one million years ago), the spotted hyena also inhabited Eurasia.


'/>"/>

Contact: SINC
info@plataformasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Related biology news :

1. Are there too many stem cell journals?
2. Scientists show theres nothing boring about watching paint dry
3. For pandas, there is a mountain high enough, there is a valley low enough
4. Research concludes there is no simple theory of everything inside the enigmatic E8
5. African bird discovery proves there is something new under the sun
6. Chubby birds get there faster
7. There may be a party in your genes
8. All tied up: Tethered protein provides long-sought answer
9. Disordered amino acids may really be there to provide wiggle room for signaling protein
10. Is there a relationship between sleep-wake rhythm and diabetes?
11. Where theres wildfire smoke, theres toxicity
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Why are there no hyenas in Europe?
(Date:11/14/2016)... SANTA CLARA, Calif. , Nov. 14, ... of the biometric identification market, Frost & ... Global Frost & Sullivan Award for Visionary ... leading player in the biometric identification market ... a multi-modal verification solution for instant, seamless, ...
(Date:6/22/2016)... 2016   Acuant , the leading ... has partnered with RightCrowd ® to ... Management, Self-Service Kiosks and Continuous Workforce Assurance. ... functional enhancements to existing physical access control ... with an automated ID verification and authentication ...
(Date:6/20/2016)... -- Securus Technologies, a leading provider of civil ... investigation, corrections and monitoring announced that after exhaustive ... the final acceptance by all three (3) Department ... (MAS) installed. Furthermore, Securus will have contracts for ... October, 2016. MAS distinguishes between legitimate wireless device ...
Breaking Biology News(10 mins):
(Date:12/5/2016)... Dec. 5, 2016  Eisai Inc. announced today ... study of rufinamide, which were presented at the ... (AES) held from December 2-6 in ... safety, tolerability and cognitive data showed that patients ... safety and tolerability profiles, cognitive development and behavior, ...
(Date:12/4/2016)... (PRWEB) , ... December 02, 2016 , ... ... innovative U.S.-owned and -operated small businesses in federally funded research and development is ... international society for optics and photonics . , As part of the National ...
(Date:12/4/2016)... and CAMBRIDGE, Mass. ... , Dec. 4, 2016 SystemOne, ... connected diagnostics software platforms for the developing world, ... "Anywhere. Care.™" a reality with its portable and ... entered into a development and license agreement to ...
(Date:12/2/2016)... , Dec. 2, 2016  The Multiple Myeloma Research ... the MMRF CoMMpass Study SM —the largest and most ... medicine in multiple myeloma—will be presented at the 58 ... & Exposition in San Diego ... optimize treatment strategies, as well as identify pathways and ...
Breaking Biology Technology: