HOME >> BIOLOGY >> NEWS
Bottom-up Ecological Processes Better For Clear Waters, Study Finds

DAVIS, Calif. -- Weighing in on the ecological debate about how best to control human-induced algae growth in naturally clear lakes, University of California, Davis, researchers have made a bottom-line discovery.

Tinkering with food webs may not help restore most lakes to their previous clarity. This is because in most cases the upper levels of a lake's food web cannot exert enough influence to control the algae feeding on polluting nutrients coming into the lake.

Instead, limiting the supply of nutrients in a lake appears to be a stronger mechanism for controlling algae blooms, according to a meta-analysis of eight lake studies involving 11 experiments in Canada, Czechslovakia, Norway and the United States, said Michael Brett, a staff research associate in the UC Davis environmental studies division.

Brett and UC Davis professor Charles Goldman, director of the UC Davis Castle Lake and Lake Tahoe research groups, published the results of the analysis in the Jan. 17 issue of the weekly journal Science.

The analysis also casts doubt on a popular model of how energy moves through food webs in general and of how many plants and animals can be found at each level of the web. The way energy moves through food webs plays a key role in determining fisheries production in lakes and oceans.

In most lakes around the world, the most common pollutants causing murky water are actually nutrients that fuel the growth and number of tiny plants at the bottom of the food chain. Limnologists have long recognized that nitrogen (typically from sewage and fertilizer) and phosphorus (from nearby construction or logging) feed the tiny marine plants known more commonly as algae.

Algae thrive on these pollutants. The quantity of algae directly determines water clarity. In a process called eutrophication, algae can deplete oxygen, killing fish, and severe algae blooms can water to sm
'"/>

Contact: Carol Morton
ccmorton@ucdavis.edu
916-752-7704
University of California - Davis
17-Jan-1997


Page: 1 2 3 4

Related biology news :

1. Ecological science for a crowded planet
2. Ecological success?
3. Ecological Society of America 88th annual meeting
4. Ecological effects of climate change include human epidemics
5. Ecological significance of tool-use in the woodpecker finch Cactospiza pallida
6. Ecological risks of GMOs come in unexpected ways, model shows
7. Energy departments Idaho lab teams with Russia to establish Ecological Biotrade facility
8. Ecological trends of food availability yield clues to Americans weight problem
9. The Geometry of Ecological Interactions: Simplifying Spatial Complexity
10. Ecological Society of America and the British Ecological Society to meet
11. Colorado State scientist is Ecological Society of America president

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/27/2021)... ... March 25, 2021 , ... Phlexglobal announced ... Planet Group, has selected Phlexglobal and its innovative regulatory SaaS software, PhlexSubmission, as ... a comprehensive review of five regulatory software companies, with the review team including ...
(Date:3/27/2021)... ... 25, 2021 , ... The 2021 Virtual Conference on Clinical Trial Supply-Europe ... More and more, clinical trial supply conferences are featuring speakers and forums that ... Asymmetrex’s founder and CEO, James L. Sherley, M.D., Ph.D., presented a talk ...
(Date:3/23/2021)... ... March 23, 2021 , ... G-CON Manufacturing (G-CON), the ... by Matica Biotechnology (Matica Bio), a contract development and manufacturing organization (CDMO) specializing ... the cleanroom build out for its new GMP production facility in College Station, ...
Breaking Biology News(10 mins):
(Date:3/27/2021)... ... March 24, 2021 , ... ... Life Sciences and Healthcare firms of all sizes, adds depth to its team ... specialist. Pardillo, who earned his doctorate in computational chemistry from Florida International University ...
(Date:3/27/2021)... ... March 24, 2021 , ... ABI Wellness, ... and reporting approach designed under CEO Mark Watson, today announced a webinar dedicated ... featuring guest speakers Dr. Cameron Clark, Neuropsychologist and Founder of Sharp Thinking, and ...
(Date:3/27/2021)... ... ... The Xtalks editorial team is pleased to announce the launch of the ... joined by editorial team members Ayesha Rashid, Sydney Perelmutter and Mira Nabulsi to discuss ... including insights from industry experts. , The Xtalks Life Science podcast will feature ...
(Date:3/23/2021)... Conn. (PRWEB) , ... March 23, 2021 , ... ... develops solutions for characterizing microbiome populations down to the strain level, recently unveiled ... applications. , Not all microbes are created equal: some are easy to ...
Breaking Biology Technology:
Cached News: