degraded coral imperils coastal people
Last Updated : GMT 17:51:59
Arab Today, arab today
Arab Today, arab today

at the US Geological Survey (USGS)

Degraded coral imperils coastal people

Arab Today, arab today

Arab Today, arab today Degraded coral imperils coastal people

More than 200 million people around the world depend on coral reefs to protect coastal homes
Paris - Arab Today

Coral reefs may be losing their ability to shield coastal communities from storms, sea surges and tsunamis, geologists said on Thursday.

More than 200 million people around the world depend on coral reefs to protect coastal homes and beaches from the ravaging impact of high seas.

But this vital buffer is at threat from reef degradation, according to a paper published by scientists at the US Geological Survey (USGS).

Degraded coral reefs suffer from erosion of the ocean bed, which increases the depth of the sea.

As a result, it becomes harder for coral to grow fast enough to keep up with water levels, which are rising as a result of global warming.

Analysis of five tropical reefs found that the combined effect of rising seas and sea-floor erosion has already increased water depths beyond what most scientists expected to occur decades from now, one investigators found.

Other studies into sea levels this century have predicted a rise of between 50 centimetres (19.6 inches) and one metre (39 inches) by 2100, as global warming causes the seas to expand and increases melt from glaciers and ice sheets. Such estimates do not take into account sea-bed erosion.

The study looked at decades-long measures of two coral reefs in the Florida Keys, two in the US Virgin Islands, and in the waters near the Hawaiian island of Maui.

- A unique ecosystem -

The sea bed had eroded at all five sites, ranging from nine to 80 cms.

In the Hawaiian site alone, the sea floor had lost 81 million cubic metres (2.8 billion cubic feet) of sand, rock and other material -- enough to fill an Olympic swimming pool 32,000 times.

"Our measurements show that seafloor erosion has already caused water depths to increase to levels not predicted to occur until near the year 2100," said Kimberly Yates, who led the study.

"At current rates, by 2100 sea-floor erosion could increase water depths by two to eight times more than what has been predicted from sea-level arise alone."

The study was not designed to explore why the erosion had occurred.

But previous research into this has been extensive, typically pinning the blame on a combination of coastal development, overfishing, pollution, coral bleaching, ocean acidification and disease.

In addition to being a natural shield against heavy seas, coral reefs also constitute a unique ecosystem, providing about a quarter of all fish harvests in tropical oceans and sustaining millions of jobs in tourism.

Coral -- tiny organisms that build 3-D structures of calcium carbonate minerals -- is already deemed a prime victim of ocean warming.

Earlier this month, scientists in Australia found that coral had bleached on the famous Great Barrier Reef for two consecutive years as a result of record-breaking sea temperatures. Corals can take years to recover from bleaching but for some species, back-to-back episodes can be fatal.

The new research appears in Biogeosciences, a journal of the European Geosciences Union (EGU).

source: AFP

arabstoday
arabstoday

GMT 17:14 2017 Sunday ,17 December

Ouch! Sea lions attack swimmers

GMT 04:52 2017 Saturday ,16 December

wild boars thrive in German capital

GMT 07:00 2017 Friday ,15 December

US void hard to miss at Paris climate summit

GMT 05:00 2017 Thursday ,14 December

Investors turn against fossil fuels

GMT 05:05 2017 Wednesday ,13 December

As winds relent, scorched California hopes

GMT 05:32 2017 Tuesday ,12 December

The greening of international finance

GMT 11:59 2017 Monday ,11 December

India faces painful move to cleaner energy

GMT 11:18 2017 Sunday ,10 December

Volcanic eruptions no match for cockfighting
Arab Today, arab today
Arab Today, arab today

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

degraded coral imperils coastal people degraded coral imperils coastal people

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

degraded coral imperils coastal people degraded coral imperils coastal people

 



Arab Today, arab today
Arab Today, arab today AnOther Magazine names fashion coordinator

GMT 10:28 2017 Thursday ,14 December

AnOther Magazine names fashion coordinator
Arab Today, arab today Shark-spotting drones on patrol

GMT 10:40 2017 Monday ,18 December

Shark-spotting drones on patrol
Arab Today, arab today 3 Ways to Find the Best Interior Design Ideas

GMT 09:49 2017 Tuesday ,12 December

3 Ways to Find the Best Interior Design Ideas
Arab Today, arab today UN Security Council to vote Monday

GMT 09:38 2017 Monday ,18 December

UN Security Council to vote Monday
Arab Today, arab today US military to send cyber soldiers

GMT 10:44 2017 Monday ,18 December

US military to send cyber soldiers
Arab Today, arab today Dubai’s first ever ‘Modest Fashion Week’ draws

GMT 11:26 2017 Tuesday ,12 December

Dubai’s first ever ‘Modest Fashion Week’ draws
Arab Today, arab today In trouble as Lufthansa drops bid

GMT 13:59 2017 Sunday ,17 December

In trouble as Lufthansa drops bid
Arab Today, arab today Why You Should Choose Oriental

GMT 10:36 2017 Wednesday ,29 November

Why You Should Choose Oriental
Arab Today, arab today Fatah calls for protests against US

GMT 14:23 2017 Sunday ,17 December

Fatah calls for protests against US
Arab Today, arab today Uber denied new license in northern

GMT 13:44 2017 Sunday ,17 December

Uber denied new license in northern

GMT 03:23 2017 Wednesday ,06 December

Cleric praises mosque school idea

GMT 04:18 2017 Sunday ,26 November

Bella magazine appoints celebrity writer

GMT 15:24 2017 Thursday ,05 October

A.F.VANDEVORST appoints SPRING London

GMT 04:30 2017 Sunday ,22 October

Miista appoints IPR London

GMT 15:05 2017 Thursday ,05 October

Haddon PR handles Deskmate

GMT 16:33 2014 Thursday ,13 November

Al-Ehtimam Bil Aakhareen

GMT 06:00 2017 Sunday ,29 October

Childrenswear brand Once appoints Dyelog

GMT 16:08 2017 Tuesday ,24 October

Glamour fashion editor goes freelance

GMT 09:12 2017 Friday ,17 November

Gleam Futures represents Grace Beverley

GMT 03:34 2017 Sunday ,05 November

Needle & Thread relocates press office

GMT 08:16 2017 Saturday ,02 December

MP warns of new drug spread in Egypt

GMT 05:14 2017 Thursday ,19 October

Blogger seeks male beauty boxes for Christmas Gift

GMT 05:29 2017 Wednesday ,27 September

SheerLuxe.com names fashion editor and marketing manager

GMT 15:12 2017 Saturday ,14 October

Christmas Gift Guide - My Girls On Tour

GMT 08:32 2017 Thursday ,30 November

MP calls for withdrawing confidence

GMT 06:03 2014 Wednesday ,09 April

Please .. Let Gaza breathe!

GMT 12:20 2017 Tuesday ,05 December

Amara underlined role of construction

GMT 06:56 2017 Friday ,01 December

Minister stresses refusal to Benkiran

GMT 13:56 2017 Friday ,01 December

Trump fuels Tillerson firing speculation

GMT 07:31 2017 Tuesday ,05 December

Actress Menna Shalaby reveals her coming works

GMT 16:48 2017 Saturday ,09 December

Al Zaydi underlines Huthi role in prices

GMT 04:06 2017 Tuesday ,05 December

Kuwait prepares for hosting GCC Summit

GMT 01:41 2017 Saturday ,12 August

Moroccan video sparks debate on sexual harassment
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday