Navigation Links
Ancient food webs developed modern structure soon after mass extinction
Date:3/19/2014

dataset," says Dunne.

Nevertheless, the researchers were able to show that the Messel forest web is likely comparable in structure to modern webs, by using models to account for differences in structure that would result from the many more taxa and interactions in the Messel data.

The results are significant because they show that the Messel ecosystem developed a modern ecological structure, along with a modern biota, in a relatively brief 18 million year period following Earth's most recent die-off, the end-Cretaceous mass extinction, which disrupted ecosystem dynamics on a massive scale and served as a species diversity bottleneck.

Dunne says that beyond the ecological and evolutionary significance of the study, the work resulted in the most highly resolved, detailed, and comprehensive terrestrial food web ever compiled.

"We want our data to serve as a challenge to ecologists to compile more highly and evenly resolved food web data for extant systems," she says.

Ancient food webs are particularly difficult to reconstruct because data about them is usually limited and of low quality. But the Messel shale deposit is unique. Scientists hypothesize that releases of toxic volcanic gases rendered the area's air and water lethal to most life in a short time. Animals in and near the lake were overwhelmed, and, along with plants, sunk to the low-oxygen depths of the lake where they were smothered in mud and fossilized, soft tissue and all.

The Messel includes outstanding evidence of feeding interactions, including stomach contents and bite marks in soft tissues that can be traced back to particular species' mouth parts, Dunne says.

"Compiling such a highly resolved food web was possible for the Messel because of the exquisite preservation of soft body parts and ecological traces in the deposit," she says, "and because my co-author, Conrad Labandeira, is one of the world's foremost experts on fossil plant-insect
'/>"/>

Contact: Jennifer Dunne
jdunne@santafe.edu
Santa Fe Institute
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Ancient DNA shows moa were fine until humans arrived
2. Climate of Genghis Khans ancient time extends long shadow over Asia of today
3. Ancient herring catch nets fisheries weakness
4. Wasps use ancient aggression genes to create social groups
5. Substance in photosynthesis was at work in ancient, methane-producing microbes
6. Forest emissions, wildfires explain why ancient Earth was so hot
7. Arctic warmth unprecedented in 44,000 years, reveals ancient moss
8. Fossil pigments reveal the colors of ancient sea monsters
9. Ancient sharks reared young in prehistoric river-delta nursery
10. Amber fossil reveals ancient reproduction in flowering plants
11. Ancient fig wasp lived tens of millions of years before figs
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Ancient food webs developed modern structure soon after mass extinction
(Date:1/22/2015)... , Jan. 21, 2015  Analyst Report Issued by Small ... Brands report showed that planet-wide, transactions at merchants on the ... the total number of credit, debit, and prepaid cards reached ... were victims of fraudulent card usage in 2012, and credit ...
(Date:1/22/2015)... NEW YORK , Jan. 22, 2015   EyeLock, Inc. ... announced it has appointed Steve Gerber to the ... Gerber will be responsible for leading development of mobile platforms ... 25 years of success and innovation in the semiconductor industry ...
(Date:12/22/2014)... Inc. (NASDAQ: NXTD and NXTDW) ("NXT-ID" or ... mobile commerce market, announces it has retained famous pickpocket, entertainer ... International CES debut of the Wocket™ biometric smart wallet.  ... NXT-ID booth January 6th and 7 th , 2015, demonstrating ...
Breaking Biology News(10 mins):$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 2EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4
... Tuesday, Nov. 16, 2010 Tying in with ... new pre-conference workshops will debut at this year,s TERMIS-North ... Orlando, Fla. The TERMIS (Tissue Engineering & ... by the Wake Forest Institute for Regenerative Medicine, and ...
... brink of an era of mass extinctions similar to ... disappeared from the Earth, reports a biologist at Penn ... a species-rescue program for Haiti,s threatened frogs and other ... few decades, many Haitian species of plants and animals ...
... SAN DIEGO New research indicates that the ... About two percent of the population has a condition called ... are experienced at once. Although this condition is rare, the ... sometimes overlapping ways to help people interpret and understand their ...
Cached Biology News:Regenerative medicine workshops to debut at TERMIS North America Annual Conference 2Rescue missions underway to save Haiti's species from mass extinctions 2Rescue missions underway to save Haiti's species from mass extinctions 3Rescue missions underway to save Haiti's species from mass extinctions 4Rescue missions underway to save Haiti's species from mass extinctions 5Hearing colors, seeing sounds: New research explores sensory overlap in the brain 2
(Date:1/22/2015)... (PRWEB) January 22, 2015 Controlled Substance ... Alliance, which helps companies check the legal requirements around ... expand to China. , As their international operations ... globally adopting software solutions built as a result of ...
(Date:1/22/2015)... PALO ALTO, Calif. , Jan. 22. 2015  Varian Medical ... equipment and software, has been honored for its commitment to ... most sustainable companies. Varian is the highest ranked healthcare equipment ... ranking, announced today during the World Economic Forum at ...
(Date:12/24/2014)... and NEW YORK , Dec. 24, 2014 ... advancing patient care in critical areas, announced the closing of ... and warrants to purchase up to an aggregate 3,500,000 shares ... share and $.01 per warrant.  The warrants have a per ...
(Date:12/24/2014)... Earlier this year in a June 24 international conference ... Cell Technology Center, LLC ( ASCTC ) focused attention on ... tissue stem cells. His title “Asymmetric Self-Renewal by Distributed ... embodied the essence of his message to congress participants. ...
Breaking Biology Technology:Global Compliance Service for Controlled Substances to Expand to China 2Varian Honored Among World's 100 Most Sustainable Corporations 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4
... Neuftec,Limited, the proprietor of the original nano-particulate ... claim against Oxonica Energy,Limited, a wholly owned subsidiary ... in the High Court of Justice, has commented ... by Dr Matthews,(CEO) on 19 June 2008., ...
... have invented an affordable technique that uses lasers and ... needed for new generations of microchips. , The ... times narrower than a human hair, may enable the ... applications in medicine, optical communications, computing and sensor technologies. ...
... June 18 ,Exelixis, Inc. (Nasdaq: EXEL ) announced ... officer at Exelixis, will present at the,Piper Jaffray Europe ... time on Wednesday, June 25, 2008. Mr. Karbe will ... The presentation will be webcast and may be ...
Cached Biology Technology:Neuftec Responds to a Fundamental Inaccuracy in Oxonica PLC's Regulatory Announcement 2Trap and zap: Harnessing the power of light to pattern surfaces on the nanoscale 2Trap and zap: Harnessing the power of light to pattern surfaces on the nanoscale 3
... BIOLOGY GRADE ,5-Bromo-4-chloro-3-indoxyl-beta-D-galactopyranoside C 14 ... O 6 ,M.W.= 408.63 ,Assay: ... (2% in DMF) ,Biological Activity: Blue ... ,Elemental Analysis: Agrees with theoretical values ...
Antibodies were affinity purified using epitopes specific to RFC1 immobilized on solid support....
Provides continuous mixing action. For use with tubes, vials, and other containers...
Agarose for baculovirus plaque assays which allow optimal growth of plated insect cells....
Biology Products: