Subscribe to our free daily newsletters
. Earth Science News .




Subscribe to our free daily newsletters



WATER WORLD
The underwater jungles of the sea give clearer water
by Staff Writers
Stockholm, Sweden (SPX) Aug 31, 2017


Underwater plants can contribute to a better water quality, shows a new study. The diver Marin van Regteren is studying the plants Chara horrida, Stuckenia pectinata, Myriophyllum sibiricum and Potamogeton perfoliatus. Image courtesy Joakim Hansen.

The new study, that has been conducted in 32 archipelago bays along the Baltic Sea coast shows that underwater plants can contribute to a better water quality, thus improving their own living environment. The water becomes clearer when the plants take up nutrients and in that way out-compete phytoplankton.

"Dense plant communities such as seaweeds and pondweeds also slow down the water movement and cause sediment particles to sink to the bottom, which also makes the water clearer," says the PhD candidate Asa Nilsson Austin.

It has been shown earlier that turbid water, which is a sign of nutrient enriched bays, contains fewer underwater plants. This is because the plants die if they get too little light. But this new study shows the opposite - that the underwater plants themselves can positively affect water quality.

The results from the study also indicate that if the plants disappear, it may lead to poor water quality in the long run. This is because the turbid water hinders the growth of new plants, leading to a negative spiral of turbid bathing water. -

Since turbid water is often an indication of eutrophication, one can say that the plants act as a buffer against it, says the PhD candidate Asa Nilsson Austin.

Sheltered bays - extra sensitive
In sheltered archipelago bays, the water exchange time may be several weeks long. Therefore, a lot of nutrients from land can be accumulated, with risk for eutrophication. In sheltered archipelago bays you can often find rooted plants that, apart from growing dense and taking up nutrients, can stabilize the soft bottom and reduce the sediment resuspension.

These bays are also important breeding areas for predatory fish such as pike and perch. Here, where the water warms up quickly in spring, the fish lay their roe on the underwater plants. But it is also here that we like to moor our sailing boat to enjoy our holiday - and take a swim in the sea.

WATER WORLD
Caspian Sea evaporating as temperatures rise
Washington DC (SPX) Aug 30, 2017
Earth's largest inland body of water has been slowly evaporating for the past two decades due to rising temperatures associated with climate change, a new study finds. Water levels in the Caspian Sea dropped nearly 7 centimeters (3 inches) per year from 1996 to 2015, or nearly 1.5 meters (5 feet) total, according to the new study. The current Caspian Sea level is only about 1 meter (3 feet ... read more

Related Links
Stockholm University
Water News - Science, Technology and Politics


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

WATER WORLD
Two landslides kill 30 in China

After Harvey, misery piles on for Texas plant evacuees

Texas flood toll mounts amid chemical blast fears

'Katrina all over again:' New Orleans in solidarity with Houston

WATER WORLD
Clamping down on causality by probing laser cavities

Rare-metals in the Himalayas: The potential world-class treasure

Why does rubbing a balloon on your hair make it stick?

Making 3-D printing safer

WATER WORLD
Decoding coral DNA could help save reefs from extinction

Oil and water can mix under the right conditions, scientists say

Ecuador prison for Chinese fishers caught in Galapagos

Phoenix International receives $23.3M for deep-sea rescue vehicles

WATER WORLD
New findings on the past and future of sea ice cover in the Arctic

Warming the Antarctic 1 C vastly changes seabed life

Climate change pushed songbirds from Bahamas in the wake of the last ice age

Satellite photos reveal gigantic outburst floods

WATER WORLD
Leaf sensors can tell farmers when crops need to be watered

To detoxify soil, just shoot lasers at it, study says

Scientists turn brewing waste into fresh yeast to make more beer

Soybean rust develops 'rolling' epidemics as spores travel north

WATER WORLD
'Tsunami-sunk' Roman ruins discovered in Tunisia

Nigeria floods displace more than 100,000

'Bigger and stronger' storms on the horizon: experts

Texas flood disaster by the numbers

WATER WORLD
DRCongo troops chasing reporter 'force entry' at UN base

Angolans vote as Dos Santos ends 38-year rule

Death toll in SLeone flood disaster reaches 441

Africa Endeavor 2017 communications conference starts in Malawi

WATER WORLD
Ape intelligence research poisoned by human ego, scientists argue

Elderly just as streetwise as young adults, research shows

Farming, cheese, chewing changed human skull shape

Both chimpanzees and humans spontaneously imitate each other's actions




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement