Navigation Links
Foundational concept of ecology tested by experiment
Date:6/22/2012

Mihaljevic, then a WUSTL undergraduate and now a graduate student at the University of Colorado, Boulder, created eight artificial wetlands at Tyson, each consisting of a central stock tank and four smaller surrounding pools.

The tanks were stocked with six species of aquatic plants and three species of snails and inoculated with the smaller zooplankton and phytoplankton drawn from local ponds. The remainder of the aquatic community, such as frogs, dragonflies, flies, beetles and bugs, was allowed to assemble naturally.

Loosestrife plants in pots were placed in each of the four small pools. The pools were separated from the tanks so that only the flowers and not plant litter and pollen would play a role in the ecosystem of the central pool.

The eight "wetlands" thus created were divided into four treatment groups and the number of loosestrife flowers in each "wetland" was manipulated to mimic differences in loosestrife density.

The loosestrife in two wetlands were left alone but flowers at the other wetlands were picked to reduce their numbers to 75 percent, 50 percent or 25 percent of the flowers at the untouched wetlands.

During the course of the experiment, the small insects visiting the pools were regularly counted and categorized, as were the dragonflies and their behaviors.

At the end of the summer and the experiment, the zooplankton and phytoplankton in the eight central tanks were sampled and identified.

What happened?

The scientists were able to track the effect of the loosestrife flowers across four trophic levels, or levels in the food web, and two ecosystems, the terrestrial and the aquatic ones.

The links worked as follows: Wetlands with abundant flowers attracted more pollinating insects; the insects in turn attracted more of the carnivorous dragonflies; the well-nourished dragonflies laid more eggs in the central ponds; the voracious dragonfly larvae that hatch
'/>"/>

Contact: Diana Lutz
dlutz@wustl.edu
314-935-5272
Washington University in St. Louis
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Bark beetle management and ecology in southern pine forests
2. CU research shows warming climate threatens ecology at mountain research site west of Boulder
3. Slug ecology and management in no-till field crops
4. PuraMed BioScience®, Inc., Launches a Marketing Blitz for LipiGesic® M, Its Clinically-Tested Migraine Pain Reliever in the Denver, CO Region to Coincide with the NACDSs Marketplace 2012 Trade Convention
5. Experiments may understate plant responses to climate
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Foundational concept of ecology tested by experiment
(Date:8/29/2014)... news release is available in German . ... chemical signals between organisms is considered the oldest form ... interactions between conspecifics, for example, the sexual attraction between ... social responses and to coordinate reproductive behavior in males ... the University of the Algarve in Faro, Portugal, and ...
(Date:8/29/2014)... nucleus, chromosomal DNA is tightly bound to structural ... chromatin. Until about two decades ago, histones were ... material around which the glamorous DNA strands were ... appreciation for how DNA/histone interactions govern gene expression. ... studying the sequence of the genome from cancer ...
(Date:8/29/2014)... rise of the Tibetan plateau -- the largest topographic ... for both its profound effect on climate and its ... GSA Bulletin , Katharine Huntington and colleagues employ ... using modern and fossil snail shells to investigate the ... , Views range widely on the timing of ...
Breaking Biology News(10 mins):Ready for mating at the right time 2Ready for mating at the right time 3'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 2'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 3Snails tell of the rise and fall of the Tibetan Plateau 2Snails tell of the rise and fall of the Tibetan Plateau 3Snails tell of the rise and fall of the Tibetan Plateau 4Snails tell of the rise and fall of the Tibetan Plateau 5Snails tell of the rise and fall of the Tibetan Plateau 6Snails tell of the rise and fall of the Tibetan Plateau 7
... Tests at a school beside an informal electronic waste ... to lead, cadmium and other health-threatening pollutants over 50 ... a church headquarters and a soccer field are likewise ... scrap metal site, where electronic trash is scavenged for ...
... also available in Chinese on EurekAlert! Chinese ... researchers, led by the University of Melbourne and BGI, has ... of pig. This collaborative study, published online in the international ... scientific community and paves the way for the development of ...
... expression of specific genes in the human genome is what ... new study by researchers at the Johns Hopkins Bloomberg School ... the National Institute of Mental Health found that many gene ... after birth. Reversals of fetal expression changes are also seen ...
Cached Biology News:High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 2High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 3High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 4High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 5BGI reports pig parasite's genomic sequence provides new clues for parasitic diseases research 2Scientists chart gene expression in the brain across lifespan 2
(Date:8/28/2014)... (PRWEB) August 28, 2014 The ability ... a culture that will allow individuals to perform at ... increasingly important for employers looking to compete in this ... are embracing this trend, as the sector increasingly focuses ... a company, which will have real results on the ...
(Date:8/28/2014)... --  SunTrust Robinson Humphrey (STRH) today announced ... equity research team in biotechnology and oilfield services.  ... research demonstrates our commitment to providing our valued ... investment decision making," said Biff Woodruff , ... make significant investments in differentiated content at a ...
(Date:8/28/2014)... 28, 2014  Armetheon, Inc. ( www.armetheon.com ), ... to late-stage cardiovascular drug candidates, today announced that ... round of financing. The Series A round was ... with participation from investors that included Atheneos Capital ... Larry Hsu , the founder of Impax ...
(Date:8/28/2014)... Scientists, researchers, and technologists will converge ... Damage 2014 symposium. Marking its 46th year, the ... run 14-17 September. The event is sponsored by ... , The premier conference for basic and applied issues ... materials will engage researchers and engineers from numerous industries ...
Breaking Biology Technology:Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 2SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 3Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3Laser Damage to Draw Researchers, Engineers, Scientists to 46th Annual Conference 2Laser Damage to Draw Researchers, Engineers, Scientists to 46th Annual Conference 3
... April 16 Kosan Biosciences,Incorporated (Nasdaq: KOSN ... inhibitors demonstrating a high degree of target,specificity, strong ... tumor,tissue and significant antitumor activity and safety in ... protein chaperone that acts to stabilize and/or activate ...
... N.J., April 16 Medarex, Inc.,(Nasdaq: MEDX ... trial that suggest a,potential association between higher doses ... disease control and prolonged,progression-free survival in patients with ... Phase 1/2 trial were presented at the,Annual Meeting ...
... BASINGSTOKE, England and PHILADELPHIA, April 16 /PRNewswire-FirstCall/,-- Shire ... SHPGY ), the,global specialty biopharmaceutical company, announces ... company proposal, it,will today post the Circular and ... to the ordinary shares in the new Shire ...
Cached Biology Technology:Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 2Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 3Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 4Medarex Reports Phase 1/2 Clinical Data of MDX-060 in Lymphoma at American Association for Cancer Research Meeting 2Medarex Reports Phase 1/2 Clinical Data of MDX-060 in Lymphoma at American Association for Cancer Research Meeting 3New Shire Holding Company Proposal 2New Shire Holding Company Proposal 3
Rabbit polyclonal to HMGB1 (rating: ****) ( Abpromise for all tested applications). entrezGeneID: 3146 SwissProtID: P09429...
ERalpha (Ser 104/106)...
Agarose, pulse field, 250 g. Nuclease-free.Gel point (1.5%): 36 1.5 C, EEO (-mr): 1800 g/cm2. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Agarose, pulse field, 100 g. Nuclease-free.Gel point (1.5%): 36 1.5 C, EEO (-mr): 1800 g/cm2. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Biology Products: