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:10/14/2014)... prostate cancer tumors scavenge and hoard copper that is ... may be a fatal weakness. , Researchers at ... cancer cells by delivering a trove of copper along ... brimming with the mineral, leaving non-cancer cells healthy. , ... available for other uses, could soon be tested in ...
(Date:10/14/2014)... ATHENS, Ohio (Oct. 14, 2014)—It,s been millions of years ... but a team led by Ohio University scientists is ... to model airflow through dinosaur snouts. The research has ... not only breathe but to enhance the sense of ... pretty ,nosy, animals," said Ohio University doctoral student Jason ...
(Date:10/14/2014)... planet,s leading questions is how to produce enough food ... The Food and Agriculture Organization of the United Nations ... next 40 years to feed a growing global population, ... rise in food production. Plants—grains, cereals, fruits, vegetables, ... Current research must tap into our knowledge of ...
Breaking Biology News(10 mins):Prostate cancer's penchant for copper may be a fatal flaw 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 3Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3
... -- The ability to estimate soil texture-by-feel is an important ... Many soil properties depend largely ... texture strongly influences the nutrient holding ability of a soil, ... of this water that is available to plants, how fast ...
... effects of global warming continue to mount, a new ... and Biochemical Zoology finds that an increase in ... a devastating effect on populations of Australia,s iconic kangaroos. ... the capacity to cause large-scale range contractions, and the ...
... the academy of sciences for the developing world, will ... 10-13 November 2008. Felipe Caldern, the president of Mexico, ... Molina (chemistry 1995) and Harold Varmus (physiology and medicine ... Jubilee lectures. A series of symposium, focusing on such ...
Cached Biology News:Estimate soil texture-by-feel 2Global warming threatens Australia's iconic kangaroos 2
(Date:10/18/2014)... The report "1,6-Hexanediol Market by Application and By ... the global market on the basis of its ... such as the key drivers, current trends and ... 81 Market Data Tables and 29 Figures spread ... Market by Application and by Geography - Trends ...
(Date:10/18/2014)... 2014 The Asia-Pacific hardware encryption display ... Asia-Pacific with analysis and forecast of revenue. This market ... to reach $51,362.6 million by 2018, at a CAGR ... the TOC of the Asia-Pacific hardware encryption market report, ... This also provides a glimpse of the segmentation of ...
(Date:10/18/2014)... 18, 2014 The Asian Electronic Medical Record ... Asian with analysis and forecast of revenue. The electronic medical ... to $2,328.0 million by 2018, at a CAGR of 9.4% ... the Asian Electronic Medical Record (EMR) market, to get an ... glimpse of the segmentation of the market in the same ...
(Date:10/18/2014)... According to a new market research report ... Global Trends & Forecasts up till 2017”, hydraulic fracturing ... This value is expected to increase from $40 billion ... CAGR during the same period. North America is expected ... terms of hydraulic horse power supplied by the year ...
Breaking Biology Technology:1,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 3The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 2The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 3The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 4The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 5Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 2Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 4
... -- Shandong Zhouyuan Seed,and Nursery Co., Ltd. (OTC ... incorporated in the State of Delaware, announced,that its ... and,Nursery Co., Ltd. ("Zhouyuan" or "the Company"), had ... Kun Yuan Seeds Co., Ltd. ("Kun Yuan") on,August ...
... 2007, SAN DIEGO, Sept. 17 Neurocrine ... Neurocrine Biosciences will,present at the A.G. Edwards Annual ... September 19, 2007 at 1:30 p.m. Eastern,Time (ET) ... be,simultaneously webcast and may be accessed on the ...
... Conn., Sept. 17 Diageo (NYSE: DEO ),the ... to announce,its sponsorship of a physician,s training program in ... of the State of,New York (MSSNY). The program, ... developed to better prepare physicians to address and assess ...
Cached Biology Technology:Shandong Zhouyuan Seed and Nursery Co., Ltd. Signs an Agreement with Linyi Company 2Shandong Zhouyuan Seed and Nursery Co., Ltd. Signs an Agreement with Linyi Company 3Diageo Sponsors Medical Society of the State of New York's Physicians Training Program 2Diageo Sponsors Medical Society of the State of New York's Physicians Training Program 3
Best pricing for 100mg-1.0g scales. Phosphopeptides are our specialty....
... The ProteomeLab PF 2D is an automated, ... complex protein mixtures. Part of Beckman ... 2D produces results in just hours. ... proteins present in cell lysates, addressing a ...
... Library Panels were designed for full-length gene ... PCRs to identify the desired cDNA clone. ... a 96-well "Master Plate," where each well ... identified the positive well(s) by gel electrophoresis ...
... Jobin Yvons Protein 295 ex can measure ... sample in only a few minutes. To ... acids tyrosine and tryptophan, the Protein 295 ... a pulsed diode emitting 295 nm. Fluorescence ...
Biology Products: