Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

We are all now connected by the Internet, like neurons in a giant brain.

 

Stephen Hawking

 

Killing sharks is killing coral reefs too

RATE THIS! +33
Posted in Science on 20th Sep, 2013 01:00 AM by AlexMuller

The growing demand for shark fin as an ingredient in Chinese cuisine has caused an explosion in the number of shark fisheries in recent decades. But sharks are important members of ocean food chains, and removing them can have unintended consequences. Our new study, conducted off the coast of northwest Australia, shows that killing sharks isn’t just bad for sharks; it can also harm coral reefs.

 
What do sharks have to do with coral?
 
Sharks are apex predators – they live at the top of the food chain. They grow slowly, mature late and have relatively low rates of reproduction. This means that their populations have little resilience to harvest and as a result, over-fishing of sharks has now become a worldwide problem.
 
Nowhere is immune to this phenomenon, as rising prices for shark fin drive fishermen to search every corner of the oceans to harvest sharks. Coral reefs, once renowned for their abundance of sharks, have been targeted by both legal and illegal fishermen so that today even areas as large and as well-managed as the Great Barrier Reef show alarming signs of diminishing shark populations.
 
While we recognise this loss is occurring, we still have very little idea of what effect the removal of sharks has on coral reef ecosystems.
 
This is because in most places, fishing is just one of many processes such as coral bleaching, cyclone damage, attacks by crown of thorns starfish, pollution and eutrophication that can occur simultaneously, all of which alter the structure of the reef in fundamental ways. Disentangling the effects of the loss of sharks from these other influences can be a daunting task.


Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Science on 2017-05-24 15:12:39
    In 'Enormous Success,' Scientists Tie 52 Genes to Human.....read more
    Posted in Science on 2017-05-24 15:04:49
    Humans Accidentally Created a Protective Bubble Around Earth..read more
    Posted in Science on 2017-05-24 14:53:33
    Scientists say the pace of sea level rise has nearly.....read more
    Posted in Science on 2017-05-23 15:57:07
    Elon Musk's Neural Lace Could be an Injectable Thinking Cap..read more
    Posted in Science on 2017-05-23 15:52:35
    California Grid Smashes Record, Gets 67% of Energy From.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Nanoparticle vaccine shows potential as immunotherapy to fight.....read more
    Posted by AlexMuller
    Obesity is top cause of preventable life-years lost, study shows..read more
    Posted by AlexMuller
    Light can be utilized to control gene function..read more
    Posted by AlexMuller
    Brain stimulation restores memory during lapses, research shows..read more
    Posted by AlexMuller
    Wax worm caterpillar will eat plastic shopping bags: New.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me