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Sunday, September 28, 2008

A Day on the Pearl River

On Friday my teammates Ann, Mike and I spent the day on the Pearl River. We put in at the next boat launch up the road. We were prepared for a day in the sun, we each carried a gallon of water, sunscreen, bugspray, and caterpillar hunting equipment. Well, at least we thought we had our caterpillar hunting equipment...as Mike went through the mental checklist while we were well on our way on the river we discovered that we had forgotten our GPS (global positioning system) and our data logger (Palm Pilot). So we did an aboutface and paddle up the river...against the current. After about 15 minutes Ann and I decided to pull ashore and let Mike go back to the take in point. The rivers here in Louisiana are very different than those in California. They are fairly flat. The water is murky and muddy looking. One of the reasons is that there is a lot of tannin in the water from the decomposing leaves. There is also a lot of sediment in the water. In California,our rivers are fairly clear and most of them begin high in the Sierra Nevada. CHALLENGE QUESTION: What animals do you think you would find both on California rivers and rivers such as the Pearl River in Louisiana? What animals do you think are different? What kind of fish do you think we have in common? Do you think they have salmon in the rivers in Louisiana? Which are different?

3 Comments:

At September 29, 2008 at 10:13 AM , Anonymous Anonymous said...

The kinds of animals found in both California Rivers and the Pearl River.

You would find salmon in both rivers.

Certain kinds of fish

MOSQUITOS!!

Dragon flys

 
At September 30, 2008 at 8:35 AM , Blogger Karen Retford said...

There are definitely mosquitoes here. I don't think that they have salmon here I pulled up. We have seen a lot of dragonflies and damselflies. I saw Viceroy Butterflies in the willows along the river, but we didn't find any caterpillars for this species.

What other animals do you think we have in common? What animals do you think they have in Louisiana but not in California?

 
At September 30, 2008 at 8:47 AM , Blogger Karen Retford said...

They don't have salmon in the Louisiana rivers, the water isn't clear like when you go to the Tuolumne or the Stanislaus. Salmon need fresh water that is highly oxigenated. The water temperature has to be fairly cold. When we are raising the salmonids the watertemperature is about 45 degrees. The water temperatures here are too high.

The one fish we do have in common is the catfish. We will need to do some research on what kind of catfish we have; in Louisiana they have channel catfish, blue catfish, and flathead catfish.

 

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