Reading+1

Great Job 7pts Reading log 1 - Using Mathematical Models to Study the Dispersion of Exotic Marine Species

__Before reading__ *Read the tilte and list 10 words you think you might find in the text.

Species, oceans, marine, water, fish, jellyfish, seaweed, mathematics, exotic, animals.

*How can you use math applied to biology. Mention one thing you can think of.

The application of mathematics in genetics. in Mendelian genetics.

*What do you know about jelly fish? What kind of fish is it? If you don't know, find out, cut and paste an image of this fish. Please acknowledge the source


 * Jellyfish** (also known as **jellies** or **sea jellies** or **Medusozoa**) are free-swimming members of the phylum [|Cnidaria] . Jellyfish have several different morphologies that represent several different cnidarian classes including the [|Scyphozoa] (over 200 species), [|Staurozoa] (about 50 species), [|Cubozoa] (about 20 species), and [|Hydrozoa] (about 1000–1500 species that make jellyfish and many more that do not). [|[1]][|[2]] //** [|Medusa] **//is another word for //jellyfish//, and refers to any free-swimming jellyfish stages in the phylum Cnidaria.





*What is dispersion? If you don't know, find out, please acknowledge the source. In math, dispersion means the degree of detachment from a set of values ​​about their mean value. []

__While Reading and After Reading__ 1. Click on the following link so that you can read the article. [|Using Mathematical Models to Study the Dispersion of Exotic Marine Species students version.doc] 2. Try to locate the words you though you were going to find in the text (question 1 before reading) List the words you found Exotic, species, Mathematics, jellyfish, oceans. marine, wate

3. Find what the following referents in bold letters refer to in the text: > REFERS TO; the world-wide dispersal post-dates European global shipping and trade
 * The species of Jellyfish studied are known as Aurelia and **these** are found over much of the world’s temperate oceans.
 * REFERS TO: jellyfish
 * By simulating the movement of the jellyfish over a 7,000-year period the study provides strong evidence that the world-wide dispersal post-dates European global shipping and trade, **which** began almost 500 years ago.


 * Ships take in water for stability before a voyage and, despite preventative measures such as mid-ocean exchange/ flushing, **this 'foreign' water** and **its contents** can find its way into bays and harbors at the ships destination.

REFERS TO: The computer model
 * <span style="color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">The computer model could answer similar questions about the migration and introduction of any suspected non-native marine creatures, according to **its** developers Professor Matthew England and Alex Sen Gupta.

IT´´S NOT IN THE TEXT
 * <span style="color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">Now we have a tool that can include data on currents, geography and the biology of an organism to help separate natural dispersal **from that which happens** through shipping and trade

<span style="color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">4. What is happening with the fish? Jellyfish are spreading due to international shipping and trade of marine species.

<span style="color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">5. What explanation scientists had given? Scientists say the species are migrating in an unnatural way. this u nnatural migration occurs via ballast water from international shipping and because of international trade of marine species.

<span style="color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">6. What did mathematicians find out? What does the formula explain? the researchers developed a global Lagrangian model, incorporating features of the life of jellyfish.