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:3/28/2017)... 28, 2017 The report "Video ... Monitors, Servers, Storage Devices), Software (Video Analytics, VMS), and ... Global Forecast to 2022", published by MarketsandMarkets, the market ... is projected to reach USD 75.64 Billion by 2022, ... The base year considered for the study is 2016 ...
(Date:3/24/2017)... 2017 The Controller General of Immigration from Maldives ... Algeen have received the prestigious international IAIR Award for the most ... Reading ... Maldives ... Abdulla Algeen (small picture on the right) have received the IAIR award ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:8/15/2017)... ... 15, 2017 , ... Any expert in stem cell research or stem cell ... than half a century. Despite their essential roles in human health and regenerative ... molecular tags developed for this purpose also tag other, more abundant, non-stem tissue cells ...
(Date:8/15/2017)... ... August 15, 2017 , ... Coffea arabica accounts for 70 ... factors. During this educational webinar, participants will learn about the importance of genomics ... better understanding of how genomics is important for coffee breeding improvement. , Attendees ...
(Date:8/14/2017)... ... August 14, 2017 , ... ... interconnect using USB or PCI Express, announced the release of SYZYGY™, a new ... to satisfy the need for a compact, low cost, low pin-count, high-performance connectivity ...
(Date:8/11/2017)... (PRWEB) , ... August 11, 2017 , ... A staple ... campaign this month that will incorporate important key elements including a new digital marketing ... community that has supported them, Bill Miller has partnered with the South Texas Blood ...
Breaking Biology Technology: