Navigation Links
Fossil palm beetles 'hind-cast' 50-million-year-old winters
Date:5/13/2014

Fifty-million-year-old fossil beetles that fed only on palm seeds are giving Simon Fraser University biologists Bruce Archibald and Rolf Mathewes new information about ancient climates.

According to their research, published online this week in The Proceedings of the National Academy of Sciences, these fossil beetles indicate that during a period of global warming in the geological past, there were mild, frost-free winters extended even in the uplands of ancient western North America.

Working with co-authors Geoffrey Morse of the University of San Diego, California, and David Greenwood of Manitoba's Brandon University, researchers used fossil beetles to determine winter temperatures where they couldn't place a thermometerin the 50-million-year-old uplands of British Columbia and Washington.

The key to their study was finding a particular group of beetles that only feed on palms.

"The natural distribution of palms is limited today to regions without significant frost days, which their seeds and seedlings can't survive," Archibald explains. "A cooler upland with palms indicates a specific climate type, where a temperate average yearly temperaturerather like Vancouver todayhad warmer winters where palms can complete their lifecycles."

But since detecting palm fossils is difficult, the research duo developed a new technique they used the beetle fossils to test for the palms' presence.

Understanding more about these temperate, yet mild winter climates by looking to the deep past may help show how natural communities are impacted by climate change, says Archibald. "We see this happening today in significant wayswarm the winters a little, and you get big changes, such as the explosion of mountain pine beetle populations that strongly affect forests and the people and economies that depend on them.

"Using the fossil record to understand climates of the deep past that had significant similarities to climates that we are now encountering may help forearm us with knowledge that will be important to our future as we increasingly experience the effects of global warming."


'/>"/>

Contact: Bruce Archibald
sba48@sfu.ca
778-782-9017
Simon Fraser University
Source:Eurekalert

Related biology news :

1. Protecting living fossil trees
2. Dinosaur fossil: Even specialized predators didnt turn down free meals
3. Seismic zones, river deltas, landslides, fossil reptiles, and more new Geology science
4. Buy coal? New analysis shows purchasing fossil fuel deposits best way to fight climate change
5. Anthropologist finds explanation for hominin brain evolution in famous fossil
6. Ancient giant turtle fossil revealed
7. Scientists find gold-plated fossil solution
8. Human-like spine morphology found in aquatic eel fossil
9. Work starts on fossil fuel free cargo ship set to transform shipping industry
10. Fossil turtle from Colombia round like car tire
11. Fossil egg discovered in Lleida (Spain) links dinosaurs to modern birds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/20/2016)... N.C. and GENEVA, Dec, 20, 2016 /PRNewswire/ ... biometric data sensor technology, and STMicroelectronics ... the spectrum of electronics applications, announced today the ... development kit for biometric wearables that includes ST,s ... with Valencell,s Benchmark™ biometric sensor system. ...
(Date:12/15/2016)... Germany , December 15, 2016 ... announced an agreement with NuData Security, an award-winning ... partnership will enable clients to focus on good customer experience, ... protection regulation. ... In order to provide a one-stop fraud prevention suite, ...
(Date:12/15/2016)... -- "Increase in mobile transactions is driving the growth ... is expected to grow from USD 4.03 billion in ... CAGR of 29.3% between 2016 and 2022. The market ... for smart devices, government initiatives, and increasing penetration of ... expected to grow at a high rate during the ...
Breaking Biology News(10 mins):
(Date:1/23/2017)... (PRWEB) , ... January 23, 2017 , ... ... replacement at the Caribbean Neurosciences Symposium (CANS) annual meeting in Montego Bay, Jamaica ... technology and host a hands-on workshop for surgeons to experience the simplicity of ...
(Date:1/21/2017)... ... ... Nipro Corporation (Osaka, Japan) and Transonic Systems Inc. (New York, USA) announced the ... sales rights for all non-OEM Transonic products in Japan. As partners for more than ... - Transonic JV is a natural next step to advance best practices and further ...
(Date:1/21/2017)... BOULDER, Colo. , Jan. 20, 2017 ... ("Bioptix" or the "Company"), announced that on January 14, ... a plan under which the Company will terminate certain ... subsidiary, Bioptix Diagnostics, Inc.  The Company commenced terminations on ... completed within 30 days.  The Company may pay severance ...
(Date:1/20/2017)... , ... January 20, 2017 , ... The two newest ... treatment options for patients. Vironika, a spin out from The Wistar Institute, and Sanguis, ... lab space at 3624 Market Street. , Vironika is developing a treatment for ...
Breaking Biology Technology: