We are still en route to our first sampling location, which is sort of in the middle of the Aleutian Islands. It's pretty far away from ANYTHING, but a good spot for fish because it's an area of upwelling. We still have another day and a half of steaming towards our location, and once (finally) there, we'll begin trawling and processing fish- that's when the fun (and WORK) begins!
|
The trawl net before being deployed |
After dinner tonight, we conducted a "test" trawl to make sure all the gear we have is working correctly. We have more than just a standard trawl net to catch fish- there are special latches/doors that close to separate fish into distinct parts of the net, as well as a camera system to observe the fish going into the net. I'll get into the details of the trawl equipment once we actually begin catching some fish :) It's really amazing to SEE the trawl nets that I've talked about so much in class (well, in Marine 2), and how much bigger they are than I had ever imagined. I am really looking forward to getting to our first spot so I can start doing some work- I never thought I'd say I
wanted to do work, but that's what I'm on this trip for, and I'm ready to get my hands on some fish and cut them open :) You all know I'm not squeamish about that kind of stuff, but everything we dissect is preserved, and these will be FRESH, so this will be a whole new experience for me!
|
Part of the trawl with a camera rig attached |
|
The end of the trawl |
One last thing before I go- when we deployed the trawl net during our test run, there were lots of seabirds flying around, waiting for a free meal. I'm not very good with birds (especially those of the North Pacific!) but I was able to spot an albatross! I'm not sure what species it is, but I believe it's a Laysan Albatross. Check out the photo, it's the best I could do :)
|
Albatross!
|
QUESTION OF THE DAY:
Why are there lots of fish (and other organisms) in an area of upwelling?
Upwelling brings a large supply of nutrients that have risen from the [often cold] depths of the ocean floor. With this source of nourishment, many organisms attain more food and energy, and upwelling thus increases ecosystem-ic productivity. :D
ReplyDelete