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

That smaller islands will typically sustain fewer species than large ones is a widespread pattern in nature. Now a team of researchers shows that smaller area will mean not only fewer species, but also shorter food chains. This implies that plant and animal communities on small islands may work differently from those on large ones.

Top predators the first to go

Working across a set of 20 islands off the Finnish coast, a group of Finnish scientists found that a disproportionate number of small islands were lacking the highest levels of the food chain. The results are freshly online in the journal Ecography.

"Ecologists have known for decades that less area means fewer species", explains Tomas Roslin, who spearheaded the current analyses. "What we show is that the decrease in species richness with decreasing area gets steeper when you climb up the food chain. That means that when you move towards smaller island size, you run out of top predators before you run out of intermediate predators, and that you lose the last plant-eaters before you lose the last plant."

The study comes with broad implications for a world shattered by human activities. "While we worked on a set of real islands, you can probably think of habitat fragments as 'islands' in a broader sense", says Tomas. "What our results then mean is that if we keep splitting natural habitats into smaller and smaller pieces, we may not only lose a lot of species from the resultant fragments, but also change the structure and functioning of local food webs."

Knowing your species the key to insights

To explore the effects of island size, the research team focused on islands spanning a hundred-fold range in area. On each of these islands, the team took samples of local food chains consisting of four levels: plants, predators feeding on the herbivores, and top predators feeding on the predators themselves.

Among predators, the researchers targeted a specific
'/>"/>

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:7/10/2014)... 2, 2014 NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication company ... Gino Pereira was interviewed on July 1 st ... Tampa Florida . Mr. Pereira discusses the company,s next ... and how the Wocket™ aims to replace a traditional ... Cedric Harris tells Gino he has never heard ...
(Date:7/10/2014)... July 7, 2014 According to ... "Electronic Access Control Systems Market Global Forecast, Market Share, ... global Electronic Access Control systems market was valued at ... grow at a CAGR of 12.6% from 2014 to ... million in 2019. Browse the full Electronic ...
(Date:7/10/2014)... to the large, mainly tropical flowering plant family Melastomataceae (Meadow ... family rely on bees for their pollination. Only about 100 ... The flowers of Axinaea appear in clusters of ... the different species are pink, yellow, orange or red. The ... colours of their bulbous appendages. The pollination mechanism of ...
Breaking Biology News(10 mins):Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 2Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 5Novel type of bird pollination mechanism discovered in South America 2
... Men who develop breast cancer are often not treated ... treatment becomes difficult, new results show. Although most ... 1% of cases, Dr. Marina Garassino from the Orion ... organized by the European Society for Medical Oncology. ...
... beyond, humans have always wanted to fly. First ... unfailingly ended in disaster. No workable flying machines ... today there is little comparison between a top of ... similar flight patterns. In an era in which ...
... Diversity among the ancestors of such marine creatures as ... rise beginning 144 million years ago with no clear ... This contradicts previous work showing dramatic increases beginning 248 ... diversity. "Some of the time periods in the ...
Cached Biology News:Treatment delays result in poor outcomes for men with breast cancer 2Want to fly? Don't copy the birds and the bees 2Species have come and gone at different rates than previously believed 2Species have come and gone at different rates than previously believed 3
(Date:7/11/2014)... (PRWEB) July 11, 2014 Cayenne ... company specializing in the soft tissue reconstruction segment, ... Anchor System for surgeries involving the shoulder and ... through a novel, inserter-controlled deployment method. The unique ... partial deployment, anchor pull-out, or anchor displacement (also ...
(Date:7/10/2014)... Understanding the need for better quality and ... gap that currently exists in this area, ChanTest has ... of validated ion channel and GPCR cell lines. ... ion channels control many critical physiological functions throughout the ... potential to treat a variety of human diseases. ...
(Date:7/10/2014)... 10, 2014 OMICS Group’s 5th International ... 18-20 August, 2014 at Double Tree by Hilton Beijing, ... developments in Analytical & Bioanalytical research methods only to ... on this occasion, Dr. Srinubabu Gedela, MD of OMICS ... is a remarkable one in bringing a unique and ...
(Date:7/10/2014)... ST. PETERSBURG, Russia , July 10, 2014 /PRNewswire/ ... the Russian Federation Dmitry Medvedev , presented ... a biopharmaceutical company BIOCAD . The Company is ... the scope of MabNext project BIOCAD develops a number ... of cancer and autoimmune diseases. The ceremony took place ...
Breaking Biology Technology:Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 3Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 2Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 3A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2
... as heat during the production of electricity could ... synthesized via a technique developed by researchers with ... National Laboratory (Berkeley Lab) and the University of ... of this technology include DOEs hydrogen fuel cell-powered ...
... HealthCare Technologies,Ltd., (the "Company") today announced that ... the Staff of the Listing Qualifications Department,(the "Staff ... indicated,that because the Staff believes that the Company,s ... on December 31, 2007, constituted a,reverse merger, the ...
... Seven Summits Research issues,PriceWatch Alerts for key stocks., ... http://www.iotogo.com/s/011008B (Note: You may have to ... key.), Today,s PriceWatch Alerts cover the following stocks: ... Co., Inc. (NYSE: MER ), DryShips, Inc. (Nasdaq:,DRYS), ...
Cached Biology Technology:Feeling the heat 2Feeling the heat 3Feeling the heat 4HealthCare Technologies Ltd. (NASDAQ: HCTL) Announces Receipt of NASDAQ Delisting Notice 2Seven Summits Research Releases Alerts on XOM, MER, DRYS, CSC, and PDLI 2Seven Summits Research Releases Alerts on XOM, MER, DRYS, CSC, and PDLI 3
... (patent pending) was developed using a protein engineering ... DNA binding pocket of wild-type DNase I. These ... for DNA. The result is a versatile enzyme ... and an ability to maintain at least 50% ...
Rabbit polyclonal to hnRNP-U...
... formation of a phosphodiester bonds between adjacent ... DNA molecules or between oligonucleotides which are ... 45 - 65?. Tfi DNA Ligase is ... than conventional DNA ligases, Thus, Tfi DNA ...
RABBIT ANTI RHEB (IN) Immunogen: A 15 amino acid peptide located in the central region of human Rheb....
Biology Products: