Dead zones in Gulf of Mexico continue to grow. - Fly Fishing Forum
Our Environment We are stewards of wild places

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
  #1  
Old 07-18-2007, 03:28 PM
GregD's Avatar
GregD GregD is offline
2 handed Fly Chucker
 
Join Date: May 2000
Location: Massachusetts, Rhode Island
Posts: 638
Unhappy Dead zones in Gulf of Mexico continue to grow.

Hello,

I have been watching the dead zones in the gulf of Mexico grow, and each year it seems to get bigger and badder. Nitrogen loads are increasing and cause larger dead zones due to hypoxia.

Florida believes that fertilizer is a significant contributer to the Red tide problems that continue to grow worse and kill fish as well.

Check out the latest Noaa report on the dead zones...

http://www.noaanews.noaa.gov/stories2007/s2891.htm

Greg.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 07-18-2007, 05:29 PM
popper popper is offline
Registered User
 
Join Date: Jul 2007
Location: Central New York
Posts: 19
I have an interesting side note to add to this, for people who follow this sort of stuff from a scientific angle. The report says that algae cause hypoxia when they decay. The reason is that bacteria which use oxygen break them down. However, the algae themselves can also cause dead zones in shallow bays. I've seen it happen. I've taken the measurements with an oxygen meter. Algae respire oxygen all of the time, just like we do. During the day, when they are photosynthesizing, on balance they give off more oxygen than they take in. But at night, or on dark days, they take in more oxygen than they give off. They can completely deplete a shallow water column of oxygen if the algae bloom is thick enough. I brought this up to my graduate advisor at the time that we were taking these measurements and he didn't really run with it because they were looking at something else. Anyway, you can get these kind of fish kills anywhere in the U.S. that there is a lot of fertilizer runoff into shallow bays. The water column does not need to be stratified. We used to see fish kills whenever it rained. The oxygen would go down to zero ppm at night, but it wouldn't rebound at day because of the low sunlight.

We are poisoning our waters with too much nitrogen and phosphorus in fertilizer. Plants like it just as much in the water as they do on land. That's why the water gets all green and soupy and dead eventually.
Reply With Quote Quick reply to this message
  #3  
Old 08-03-2007, 12:30 PM
GregD's Avatar
GregD GregD is offline
2 handed Fly Chucker
 
Join Date: May 2000
Location: Massachusetts, Rhode Island
Posts: 638
Hi Popper,

I have to agree with your comments. Another NOAA report also supports the demise of our estuaries and waterways due to nutrient pollution.

http://www.noaanews.noaa.gov/stories2007/s2898.htm

Perhaps with more knowledge and discipline and care we can reverse the trend.

Greg.
Reply With Quote Quick reply to this message
  #4  
Old 08-03-2007, 12:37 PM
GregD's Avatar
GregD GregD is offline
2 handed Fly Chucker
 
Join Date: May 2000
Location: Massachusetts, Rhode Island
Posts: 638
It's big and bad

Here's a recent follow-up survey of the third larges recorded dead zone in the northern Gulf of Mexico...

http://www.noaanews.noaa.gov/stories2007/s2901.htm

Greg.
Reply With Quote Quick reply to this message
  #5  
Old 08-04-2007, 05:03 PM
popper popper is offline
Registered User
 
Join Date: Jul 2007
Location: Central New York
Posts: 19
Quote:
Originally Posted by GregD
Hi Popper,

I have to agree with your comments. Another NOAA report also supports the demise of our estuaries and waterways due to nutrient pollution.

http://www.noaanews.noaa.gov/stories2007/s2898.htm

Perhaps with more knowledge and discipline and care we can reverse the trend.

Greg.
The area where I worked is on this map, marked with a red triangle.

Thank you for posting this information.
Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Fly Fishing Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Farm fish / Gulf of Mexico salmo Our Environment 0 02-10-2009 02:35 PM
Ocean Dead Zones due to nutrient loads GregD Our Environment 4 08-28-2004 09:42 PM
Fishes of the Gulf of Maine mikez Stripers and Coastal Gamefish 0 09-15-2003 05:16 PM
More on Closed Fishing Zones Lefty Stripers and Coastal Gamefish 25 12-11-2001 08:52 AM
To continue the swap, we could... Dave Stripers and Coastal Gamefish 1 03-15-2001 02:55 PM


All times are GMT -5. The time now is 08:28 AM.



Copyright Flyfishingforum.com (All Rights Reserved)