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

Researchers from the Santa Fe Institute and the Smithsonian Institution have pieced together a highly detailed picture of feeding relationships among 700 mammal, bird, reptile, fish, insect, and plant species from a 48 million year old lake and forest ecosystem.

Their analysis of fossilized remains from the Messel deposit near Frankfurt, Germany, provides the most compelling evidence to date that ancient food webs were organized much like modern food webs. Their paper describing the research appears online and open access this week in Proceedings of the Royal Society B: Biological Sciences.

The researchers first compiled data about the more than 6,500 feeding relationships among 700 species found in the deposit, which dates to the Eocene epoch. Then they constructed two networks of feeding interactions one for the lake and one for the surrounding forest.

Next, they mathematically compared each food web's structural features with those of modern-day food web datasets matching up such indicators as fractions of cannibals, herbivores, and omnivores; the distributions of generalist and specialist feeders; the mean lengths of feeding chains connecting pairs of taxa; and so on.

"What we found is that the Messel lake food web, with 94 taxa and 517 links, looks very much like a modern food web," says SFI Professor Jennifer Dunne. "This is despite the fact that 48 million years of species turnover and evolution separate the Messel lake ecosystem from modern ecosystems."

Analysis of the Messel forest food web's structure was more challenging due to the high degree of species diversity represented in the Messel dataset 630 taxa and 5,534 feeding links far more than what datasets for modern webs include.

"Basically, we don't yet have examples of comprehensive modern terrestrial food web datasets that have the high resolution of plants, insects, and their interactions that we included in the Messel forest
'/>"/>

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:4/2/2015)... Sweden , April 2, 2015 ... its touch fingerprint sensor FPC1025 from the distributor World ... will commence during Q2 2015 although the major part ... The sensors will be used by smartphone manufacturers in ... 110 MSEK is included in the communicated revenue guidance ...
(Date:4/1/2015)... BOSTON , April 1, 2015   Medisafe ... 1.5 million users across iOS and ... has begun integrating biofeedback into the platform to allow ... health outcomes. For the first time, patients will be ... missing a dose impacts important biometrics, such as glucose ...
(Date:3/31/2015)... --  Guidepoint , a leading global research services firm, ... TRACKER, part of the Guidepoint TRACKER suite ... device and therapeutics markets. The Post-Surgical Pain Management TRACKER ... share, and adoption rates across three major modalities used ... The Post-Surgical Pain Management TRACKER will provide length ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3
... from engineers at Rensselaer Polytechnic Institute and the University of ... powerful new tool for manipulating cells. Results of the study, ... blue light can be used as a switch to prompt ... process of clustering, or oligomerization, is commonly employed by nature ...
... Securing the future supply of food is a major challenge ... food chain continues to supply, safe healthy food to the ... become scarcer? This is the focus of the IFST Spring ... on the Norwich Research Park, 17-18 April. A range ...
... coal power stations could be drastically reduced by a ... dioxide, then releases it when exposed to sunlight. ... , Monash University and CSIRO scientists for the first ... a class of materials known for their exceptional capacity ...
Cached Biology News:Nature Methods study: Using light to control cell clustering 2Carbon sponge could soak up coal emissions 2
(Date:5/1/2015)... DIEGO , May 1, 2015 ... company engaged in the development of biosimilar therapeutics ... announced today that its first quarter 2015 financial ... 2015, before the open of market. At 8:30 am ... call to discuss the financial results and provide ...
(Date:5/1/2015)... 1, 2015 Albany Molecular Research Inc. (NASDAQ: ... Marth , AMRI,s President and Chief Executive Officer, will ... Health Care Conference on Wednesday, May 13, 2015 at ... of the presentation can be accessed at AMRI,s Investor ... The webcast will be archived for 90 days following ...
(Date:4/30/2015)... 2015  Roka Bioscience, Inc. (NASDAQ: ROKA ), ... solutions for the detection of foodborne pathogens, announced plans ... of 2015 on May 7, 2015 after the close ... also host a conference call at 4:30 p.m. Eastern ... quarter financial results. During the conference call, material information ...
(Date:4/30/2015)... 30, 2015 Nitto Avecia, a ... its increased capacity and production capability to serve ... variety and service fulfillment continues to drive Nitto ... process throughput capacities. , In Fall ... downstream process equipment at its Milford, MA facility, ...
Breaking Biology Technology:Pfenex To Report First Quarter 2015 Results and Provide Business Update on Thursday, May 14, 2015 2AMRI to Present at the Bank of America Merrill Lynch 2015 Health Care Conference 2Roka Bioscience to Report First Quarter 2015 Financial Results On May 7, 2015 2Biotechnology Manufacturer Nitto Avecia Expands Capacity to Meet Client Demand 2
... Wireless Facilities, Inc. , a global ... communication networks, technology networks and security systems, announced today ... and deployment services for the City of Madison, Wisconsin's ... company Cellnet, and in coordination with Madison Gas & ...
... -- A former paper converting plant in this southwestern Wisconsin ... push to become a major global player in radio frequency ... various types of labels and thermal transfer ribbons ... by the technology. The labels are intended to add efficiencies ...
... CHICAGO Anyone following this column over the last few ... allow me to arrange information into tidy boxes in some ... sense out of the information for myself). While my list ... about how lists could be used to create awareness and ...
Cached Biology Technology:Wisconsin plant is part of NCR's global RFID initiative 2Wisconsin plant is part of NCR's global RFID initiative 3Wisconsin plant is part of NCR's global RFID initiative 4Though Weakening, Biotech IPO Market Still Viable, Burril & Co. Says 2Though Weakening, Biotech IPO Market Still Viable, Burril & Co. Says 3Though Weakening, Biotech IPO Market Still Viable, Burril & Co. Says 4
... is compatible with BioTeks microplate washers, ... of use and walkaway automation are ... When used with the ELx405 washer ... Bio-Stacks small footprint fits easily in ...
... use of small interfering RNA (siRNA) molecules ... interference (RNAi) pathway have generated tremendous interest ... siRNA for experimental use can be synthesized ... then transfected into the target cells in ...
... for the use of small interfering RNA ... the RNA interference (RNAi) pathway have generated ... biology fields. siRNA for experimental use can ... enzymatically, and then transfected into the target ...
... is commonly used as a fusion partner ... The GSTTag sequence has been reported to ... the solubility of its fusion partners. When ... GSTTag fusion proteins can be purified with ...
Biology Products: