Reading+log+1

= 4pts = 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. Mathematics, differential, equations, statistics, propagation, system, ramdom, variable, tendency, estimate.

*How can you use math applied to biology. Mention one thing you can think of. For example, we can use statistical models to predict the evolution of an epidemic in a specific population, predicting its scope and severity with a good accuracy.

*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 are marine invertebrates organisms that live near the surface. They have a bell shape and are poisonous animals.

[[image:Jellyfish-monterey-2003-08.jpg]]
Those marine animals, belong to the phylum Cnidaria

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*What is dispersion? If you don't know, find out, please acknowledge the source.

Dispersion:

1. Act and effect of disperse. 2. Phys. Separation of the various spectral colors of a light beam through a prism or other suitable means. 3. Phys. and Chem. Substance apparently homogeneous, within which there is another finely divided. 4. Mat. Statistical distribution of a set of values. 5. Chem. Fluid whose mass is contained in a body uniformly suspended or in colloidal state.

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__While Reading and After Reading __ 1. Click on the following link so that you can read the article.
 * [|Details]
 * [[file:englishformath3/Using Mathematical Models to Study the Dispersion of Exotic Marine Species students version.doc|Download]]
 * 36 KB

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 Mathematics, statistics.

3. Find what the following referents in bold letters refer to in the text:

This word refers to the species of jellyfish, known as Aurelia. It refers to the European global shipping and trade. The "foreign" water is one that travels from a harbor to another in the ballast of ships. That water contents marine organisms inside. It refers to the developers of the computer model, Professor Matthew England and Alex Sen Gupta. The unnaturally dispersion of marine organisms caused for the shipping and trade .
 * The species of Jellyfish studied are known as Aurelia and **these** are found over much of the world’s temperate oceans .
 * 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 **<span style="background-color: #ffffff; color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt; line-height: 1.5;"> began almost 500 years ago.
 * <span style="background-color: #ffffff; color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">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.
 * <span style="background-color: #ffffff; 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.
 * <span style="background-color: #ffffff; 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="background-color: #ffffff; color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">4. What is happening with the fish? The fish is spreading throughout the oceans of the world in a very unnatural way. In zones where the fish did not live are appearing specimens.

<span style="background-color: #ffffff; color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">5. What explanation scientists had given? It is believed that they are accidentally brought from the foreign, in the ballast of the ships that move the maritine trade.

<span style="background-color: #ffffff; color: #0077ff; font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 9pt;">6. What did mathematicians find out? What does the formula explain? In the formula xt is the moon jellyfish location at time of t, U is the current speed, Δt is time, Rn is a normal distributed random number, and Kh is a lateral mixing rate and Cmix is tidal mixing near the coast.The formula models the dispersion of the jellyfish in the sea.