Navigation Links
Smaller islands host shorter food chains
Date:11/22/2013

group, i.e. parasitic wasps. "To test ideas about food chain length, you really cannot deal with raw counts of species instead, you need to know which species form actual feeding chains" says Gergely Vrkonyi, an international expert on wasps involved in the project.

"Among the wasps encountered on these islands, we were able to pick out the species truly dependent on the lepidopteran herbivores. As we see it, knowing not just what the species are but what they do in their lives is the key to sensible ecology", emphasizes Gergely.

Hundreds of species examined

"What is unique about our study is that we were able to look at patterns at the level of large species pools across the islands", explains Marko Nieminen, who spent three long summers boating around the islands, sampling insects by light and bait traps.

"Where other people have looked at effects of island size on restricted numbers of species or restricted levels in food chains, we did the full thing across four levels", he specifies. "Overall, we dealt with 200 species of plants, 415 species of lepidopteran herbivores, 42 species of parasitic wasps attacking herbivores and 7 species of wasps attacking parasitic wasps."

Deliberately keeping things simple

"In choosing the islands, we deliberately went for a simple system" says Marko. "Our islands were essentially smallish pieces of rocks with some forest and heathland on them. Historically, they all rose from the sea just some millennia ago, after being submerged and scraped clean of life by the last ice age. This similarity in structure and history allowed us to look at effects of island size, without having to worry about other differences among islands."

Maintaining interactions may be trickier than maintaining species

All three authors worry about the message laid plain by the study: "What this really suggests is that to save ecological interactions, we may need to conserve much larger areas than for j
'/>"/>

Contact: Tomas Roslin
tomas.roslin@helsinki.fi
University of Helsinki
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Creating smaller, and more powerful, integrated circuits
2. The contribution of coding variants to psoriasis much smaller than thought
3. Pacific islands may become refuge for corals in a warming climate, study finds
4. 24 new species of lizards discovered on Caribbean islands are close to extinction
5. Rubbing boulders, fossil mammal teeth, barrier islands, and a change in volcanic behavior
6. Sea level rise: Jeopardy for terrestrial biodiversity on islands
7. Plants unpack winter coats when days get shorter
8. Copper chains: Study reveals Earths deep-seated hold on copper
9. Oil and water: An icy interaction when oil chains are short, but steamy when chains are long
10. Pesticide application as potential source of noroviruses in fresh food supply chains
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Smaller islands host shorter food chains
(Date:2/25/2015)... Feb. 25, 2015  ABC Financial Services (ABC), ... the Health and Fitness Industry, today announced enhancements ... MYiCLUBonline.  The latest upgrade includes advances to the ... cardless check-in via Identity One fingerprint biometrics. The ... through interactive displays at the International Health, Racquet ...
(Date:2/24/2015)... , Feb. 24, 2015 This report analyzes the ... provides separate comprehensive analytics for the US, Canada ... , Asia-Pacific , Middle ... Annual estimates and forecasts are provided for the period 2013 ... these markets. Market data and analytics are derived from primary ...
(Date:2/24/2015)... NEW YORK , Feb. 24, 2015 This report ... Thousands by the following Segments: Face Biometrics, and Voice Biometrics. The ... , Japan , Europe ... & Africa , and Latin ... period 2013 through 2020. Also, a seven-year historic analysis is provided ...
Breaking Biology News(10 mins):ABC Financial Unveils New Software Enhancements 2ABC Financial Unveils New Software Enhancements 3World Iris Biometrics Industry 2World Iris Biometrics Industry 3World Iris Biometrics Industry 4World Iris Biometrics Industry 5World Iris Biometrics Industry 6World Iris Biometrics Industry 7World Iris Biometrics Industry 8World Iris Biometrics Industry 9World Iris Biometrics Industry 10World Iris Biometrics Industry 11World Face and Voice Biometrics Industry 2World Face and Voice Biometrics Industry 3World Face and Voice Biometrics Industry 4World Face and Voice Biometrics Industry 5World Face and Voice Biometrics Industry 6World Face and Voice Biometrics Industry 7World Face and Voice Biometrics Industry 8World Face and Voice Biometrics Industry 9World Face and Voice Biometrics Industry 10World Face and Voice Biometrics Industry 11World Face and Voice Biometrics Industry 12World Face and Voice Biometrics Industry 13World Face and Voice Biometrics Industry 14World Face and Voice Biometrics Industry 15World Face and Voice Biometrics Industry 16
... to Antarctica for the first stage of an ambitious scientific ... buried beneath three kilometres of solid ice. This extraordinary research ... about the evolution of life on Earth and other planets, ... Transporting nearly 70 tonnes of equipment the ,advance party, ...
... Massachusetts General Hospital (MGH) researchers along ... and Alnylam Pharmaceuticals have found a way ... inflammation that contributes to many disease conditions. ... Nature Biotechnology , the investigators describe using ...
... New York University biologists have identified a new mechanism for ... Frank (,Ol Blue Eyes) Sinatra. Their findings, which appear in ... system functions in order to preserve the fidelity of color ... new insights into how genes controlling color detection are turned ...
Cached Biology News:Engineering team heads to Antarctica to explore hidden lake 2Engineering team heads to Antarctica to explore hidden lake 3Novel technique uses RNA interference to block inflammation 2NYU biologists use Sinatra-named fly to show how to see the blues -- and the greens 2NYU biologists use Sinatra-named fly to show how to see the blues -- and the greens 3
(Date:2/26/2015)... 26, 2015   Synageva BioPharma Corp. ... developing therapeutic products for rare disorders, today reported ... goals, other key objectives, and financial guidance.  Synageva,s ... at 4:30 p.m. EST to review the financial ... participate in today,s call by telephone, please dial ...
(Date:2/26/2015)... LAUDERDALE, Fla. , Feb. 26, 2015 ... discussed growth priorities driven by key research advancements and ... segments at today,s Bank of America Merrill Lynch 2015 ... met the challenge of building grain supplies the last ... to continue at the pace of the last decade, ...
(Date:2/26/2015)... , Feb. 26, 2015  NuGene International, ... aesthetic products for skin and hair rejuvenation, has ... as agency of record for investor relations and ... improve our distribution, sales and diversification strategies – ... current and prospective shareholders," stated Ali Kharazmi CEO ...
(Date:2/26/2015)... 26, 2015 The Pittcon 2015 ... the Ernest N. Morial Convention Center in New ... of February 19, 2015) displaying products and services ... and government labs. The Exposition will offer the ... limited to, analytical chemistry; drug discovery; nanotechnology; life ...
Breaking Biology Technology:Synageva BioPharma Reports 2014 Full Year Financial Results 2Synageva BioPharma Reports 2014 Full Year Financial Results 3Synageva BioPharma Reports 2014 Full Year Financial Results 4Synageva BioPharma Reports 2014 Full Year Financial Results 5Synageva BioPharma Reports 2014 Full Year Financial Results 6Synageva BioPharma Reports 2014 Full Year Financial Results 7Synageva BioPharma Reports 2014 Full Year Financial Results 8Synageva BioPharma Reports 2014 Full Year Financial Results 9DuPont Leader Outlines Path for Growth in Agriculture and Nutrition & Health Segments 2DuPont Leader Outlines Path for Growth in Agriculture and Nutrition & Health Segments 3DuPont Leader Outlines Path for Growth in Agriculture and Nutrition & Health Segments 4DuPont Leader Outlines Path for Growth in Agriculture and Nutrition & Health Segments 5NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 2NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 3Pittcon 2015 Announces Exposition Highlights 2
... cotton, altered to express the insecticide, Bt, not only reduces ... other nearby crops that have not been modified with Bt. ... and maximizing crop yields in the future. , The ... on Friday, 19 September. Science is the journal ...
... pH, heat and light will pave the way for ... developed by a consortium of UK universities, the nanostructures ... inside chemical reactors. This technology will provide a step ... agrochemical industries. , Professor Yulong Ding of the Institute ...
... GPRO ) announced today that the Company will present ... 24, 2008 at noon,Eastern Time. The presentation is scheduled ... link on the investors section of Gen-Probe,s website at, ... days,following the event., About Gen-Probe, Gen-Probe Incorporated ...
Cached Biology Technology:GM crops protect neighbors from pests 2Gen-Probe to Webcast Presentation at the UBS Global Life Sciences Conference 2
Request Info...
Purified Mouse anti-Hu LAT (pY226) Storage Temperature: Refrigerate(2 to 8C)...
Molecular Biology grade. Ideally suited for DNA and RNA separation and recovery. High gel strength. Gelling temp. 36C. Melting temp. 88C. EEO: 0.05-0.13 Resolution 0.2-40 kb; Rnase/Dnase: none detec...
...
Biology Products: