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Posts Tagged ‘Aquatic Ecosystems’

Plate Tectonics and the Seafloor

The people who first mapped the seafloor were aboard military vessels during World War II, using echo sounders  to search for submarines. The results produced a map of seafloor depths. Depth sounding continued after the war. Scientists used this information to produce bathymetric maps of the seafloor. During WWII and in the decade or so later, echo sounders had only one beam, so they just returned a line showing the depth beneath the ship. Later echo sounders sent out multiple beams and could create a bathymetric map of the seafloor below. Using the resources provided, answer the following questions, in complete sentences, on your blog. You may copy and paste these questions and resources, to get you started.

Magnetic Stripes

Magnetic Stripes

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Sustainability-dimensions-and-examples-3241422We can describe “sustainable resources” as renewable resources which are being economically exploited (used) in such a way that they will not diminish or run out.  People want or need to use the ocean’s resources but a balance must be maintained to ensure that they will be there for the future.

Over the past two weeks you have heard about marine conservation work, watched the movie “Blackfish”, and read from the text book about marine resources. With this classwork as a backdrop, blog about the following:

  1. What role does the marine wildlife and nature play in your life?
  2. How does the use of marine resources impact you on a personal level?
  3. Specifically, what new thoughts do you have about marine resources and the way they are used by people?

Finally, what Code of Ethics will you take to protect marine resources both now and in the future?

Criteria for assessment of your blog post:

  • at least three paragraphs in length (a paragraph is 8 – 10 sentences long);
  • each answer includes supporting information;
  • there is a link to a site that provides more information about a particular resource discussed;
  • a picture that provides applicable visual interest is embedded, with a citation to the original source.
isrimage1

Photo credit: UCL Inst. for Sustainable Resources

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Sand is always moving. The beaches you might visit everyday are not perminent features. The shape and size of beaches change everyday on a small scale and somtimes drastically over a longer period of time. The changes occur becasue of various reasons but its always because of the sand moving.

In our Oceanography class we looked at different sand samples from around the United States under microscopes and noticed the many differences. Some of the differences are visable to the naked eye and some require the use of a microscope. Here is the list of traits we observed:

  • Color
  • Magnetite
  • Size
  • Texture
  • Wentworth Scale
  • Sorting
  • Composition

A few days after doing our observations we went on a field trip to our local beach. We looked at the sand closely but it did not look any different than the sand we were used to. Although the sand varys greatly around the world, it usually doesnt look very different when the beaches are close to each other. The drastic changes can only seen if one compares sand from different areas across the world. Here is a few examples of the diversity found in beach sand colors.

http://en.wikipedia.org/wiki/Santa_Rosa_Island,_California

http://www.letsgo-hawaii.com/beaches/punaluu.html

source:

http://www.soest.hawaii.edu/GG/ASK/beacherosion.html

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The Oil spill that has happened in the Gulf of Mexico isn’t that bad. It will only kill thousands of plants and animals but, who really cares about the baby turtles, fish and birds. They shouldn’t deserve to live since they are stupid enough to eat the oil. Anyways, the CEO of Bp, Tom Hayward says “the effects will be very modest” so don’t bother worrying about it. This HAS to be true cause he would never lie about this.

Also, the Gulf of Mexico is a big OCEAN and the oil spill is only a small portion of it. If worse comes to worse the oil may disperse into the marshes and possibly into the Gulf stream which will then travel all over the world. These marshes only harbor a entire ecosystem. Take for example the brown Pelican. Some of these birds are so incrusted in oil that they cant fly and the fish they eat to survive are dying too. As of this moment there has been no solution to fixing this minor problem and were looking for solutions so if you have any ideas please share.

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The Gulf oil leak is hurting all the organisms in the water.  Not only are the organisms living in the water feeling the effects, but others are too.  The pelicans have been covered in the nasty oil.  More than 65 miles of Louisiana shore line has been covered.  Two major pelican rookeries are filled and many marshes.  They are now using chemicals to break down the steady flow of the oil.  This solution is safer for the birds and keeps the oil away from land.  The fish are usually incapable of handling the harsh chemical and are usually killed.  The chemicals migrate fast and effect many fish in many areas.  I do not believe this is the right solution.  I think they should take the fish into consideration and not just the birds.  This oil spill is taking a harsh tole on these poor organisms.

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I had an idea prior to the biome project in biology class of how different parts of the Earth were from the others, but hearing from classmates on these major biomes was even more enlightening.  I was introduced to many biomes that were more unique than I had guessed.  The biomes also had some similarities with each other as well as differences.  Because I had a prior interest in marine life and ecosystems, the aquatic(especially salt water) biomes really captivated me.  The amazing range of life and unique biodiversity of oceans the world over are truly fascinating.  The fact that so many unique species can live together in one body of water is astounding.  The physical wonders of the ocean are also enthralling.  The enormous underwater mountain ranges, deep sea trenches, and desert-under-the-sea look is beautiful. 

It makes you sad to think that people are so careless about these delicate biomes and do truly stupid things like, say, drill in the Gulf of Mexico and accidentally have their oil rigs blow up, releasing millions of gallons into the water.  It’s hard to imagine the loss of life that will occur due to this BP oil spill.  Hopefully the people that care about the aquatic biomes of the planet will find a way to help.

-Nicole B.

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For the brochure I had to research Freshwater Biomes. It was really interesting because I was able to learn about all the different animals that live in the freshwater biomes like:  Turtles, frogs, some fish, crustaceans, snails, insects, and many others. I also learned about how valuable freshwater is to the world. Like how it supplies 90% of our drinking water, bath water, and irrigation for farmers.  Not only did I learn about the freshwater biome, but also about the marine biome, deserts,  savannah, rainforest (temperate, tropical), tundra, & grasslands. The class discussion on these really helped me understand and become aware of the different climates, animals, and plants of these biomes.

– Katrina

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