Navigation Links
Glaciations may have larger influence on biodiversity than current climate
Date:6/7/2011

An investigation by the Spanish Scientifc Council (Consejo Superior de Investigaciones Cientficas, CSIC) reveals that the large impacts occurred during the last ice age maintain their effects on the current distribution of dung beetles of the scarab family (Scarabaeidae). The presence of these beetles in Europe seems to be more influenced by the climate of that glaciation than by the present one.

The study, published yesterday in the journal Ecology Letters, analyzed the species richness and the structure of their communities throughout the different regions of the European territory from the Ural Mountains to the Iberian Peninsula. The selection of this family of insects was motivated by their high dispersal ability and because their food sources (mainly cattle and sheep dung) are present throughout the continent.

Scarabs are insects of tropical origin that cannot survive below 0 C mean annual temperature, "so it could be expected that their presence gradually decreases as temperatures drop down northwards " says the researcher from the National Museum of Natural Sciences, CSIC, Joaqun Hortal. However, the analysis of the relationship between the magnitude of climate change since the last glaciation and the distribution of scarabs evidences that these insects are not evenly distributed according to this gradient, but rather show two different patterns, one in the north and one in the south. Horton said: "The border defining the two areas is almost similar to the limit of 0 C of mean annual temperature at the time of the last ice age."

Although scarab species richness is actually lower in the north that in the south, two other characteristics can be explained under the hypothesis of the influence of the last ice age.

The first one is based on the species present throughout Europe. Data show that all scarab species living in the northern territory above the border defined by the 0 C limit in the last glaciations are
'/>"/>

Contact: J. Hortal
Jhortal@mncn.csic.es
34-914-111-328
Wiley-Blackwell
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Microfossils challenge prevailing views of the effects of Snowball Earth glaciations on life
2. Undergraduate institutions should play larger research role
3. Larger female hyenas produce more offspring
4. Kenyas fisheries management promotes species that grow larger and live longer
5. How plants counteract against the shade of larger neighbors
6. Plants play larger role than thought in cleaning up air pollution
7. Climate change causes larger, more plentiful marmots, study shows
8. Apples grow larger when cells dont divide, study shows
9. NOAA-supported scientists predict larger than average Gulf dead zone
10. Reseachers predict larger-than-average Gulf dead zone; impact of oil spill unclear
11. When the dinner bell rings for seafloor scavengers, larger animals get first dibs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/22/2014)... New Rochelle, NY -- Stem cells offer much promise ... transplantation approaches stem cell survival is poor, limiting their ... improve the survival and optimize their therapeutic function after ... BioResearch Open Access , a peer-reviewed journal from Mary ... on the BioResearch Open Access website ...
(Date:7/22/2014)... have adapted to New York City,s human behaviour, allowing ... than their fellow squirrels in the woods. , Dr ... & Agriculture, led the study that proved eastern grey ... environments and prevent unnecessary responses when humans acted in ... , "As we rapidly increase the spread of ...
(Date:7/22/2014)... of meerkats which sees them prevent their daughters from ... new study. , Research into the desert creatures which ... adult helpers shows that the alpha female can flourish ... study shows how this way of life, also found in ... despite its sinister side. , Dominant meerkats control breeding ...
Breaking Biology News(10 mins):New York squirrels are nuts about city life 2
... of a novel genome mapping method to humans, ... cost-effective tool than traditional DNA sequencing. , A ... USC University Professor in molecular and computational biology, ... amounts of data created by a restriction mapping ...
... he started compiling an online database of seashells 15 ... his meticulous record-keeping would eventually shed light on a ... underlying the island rule: that small animals isolated on ... and large animals evolve to be smaller. In a ...
... called GB Virus type C (GBV-C) protects against HIV infection ... Affairs (VA) Iowa City Health Care System and the University ... HIV from growing in cell models. , The team found ... called NS5A greatly slows down HIV from replicating in cells ...
Cached Biology News:Powerful genome ID method extended to humans 2Scientist's persistence sheds light on marine science riddle 2Study IDs protein that inhibits HIV from growing in cell cultures 2Study IDs protein that inhibits HIV from growing in cell cultures 3
(Date:7/20/2014)... 2014 NSG Precision Cells has ... and spectrophotometer calibration standards for over ... released many products that have transformed the spectroscopy ... their solid-state calibration standards. , NSG’s solid-state calibration ... release in 2008. NSG started manufacturing UV ...
(Date:7/18/2014)... N.Y. , July 18, 2014 Regeneron ... its second quarter 2014 financial and operating results on ... open.  The Company will host a conference call and ... Conference Call InformationTo access this call, ... link to the webcast may be accessed from the ...
(Date:7/18/2014)... at Urbana-Champaign have demonstrated that an array of ... like traditional photographic film to record light for ... of light (for example, distances less than ~600 ... acts as a "nanocamera" whereas the pBNAs are ... the effect (writing and curing) is seen in ...
(Date:7/18/2014)... Reflecting the importance of the evolution of Houston’s real ... the founder and president of Customized Real Estate Services ... new approach to the firm’s branding. , According to ... success of his or her commercial clients have grown exponentially ... first in this market to fully embrace the potential for ...
Breaking Biology Technology:How NSG Precision Cells Spectrophotometer Calibration Standards Makes NIR Work Easier 2How NSG Precision Cells Spectrophotometer Calibration Standards Makes NIR Work Easier 3'Nanocamera' takes pictures at distances smaller than light's own wavelength 2LEED AP Certified ITRA Global / Customized Real Estate Services Introduces New Approach to Its Branding 2
... in medical device industry to benefit ... pharmaceutical clinical trial recruitment efforts, MINNEAPOLIS, May ... firm ThreeWire has strengthened the,pharmaceutical side of its ... development and a commitment to leveraging differentiators unique,to ...
... 27 Schering-Plough,Corporation (NYSE: SGP ) ... been,appointed vice president, investor relations, effective immediately., ... responsible for developing, implementing,and continually improving a ... will lead the formulation and execution of,external ...
... Collagen Matrix, Inc.,announced today that it has ... clearance of its TenoMend(TM) Collagen Tendon Wrap,indicated for ... which,there has been no substantial loss of tendon ... resorbable type 1 collagen,matrix that provides a non-constricting ...
Cached Biology Technology:ThreeWire Expands Presence in the Pharmaceutical Arena 2Schering-Plough Appoints Janet M. Barth Vice President, Investor Relations 2Collagen Matrix, Inc. Receives FDA 510(k) Clearance for TenoMend(TM) Collagen Tendon Wrap for the Management and Protection of Tendon Injuries 2