ESS

Ideas for ESS

I don't know much about ESS. But maybe we could some what do somethng similar to bio? What if we sort of group up? Like Bio and ESS could team up and then Physics and Chem could do it together? Just like we did during V-resort?

To measure the amount of pollution in the west lake.

Methods of sampling: All methods of sampling involve moving the substrate (what is on the bottom of the river) and catching the dislodged invertebrates with a net placed on the downstream side of the sampling area.

You should ALWAYS start on the downstream edge of your site and slowly move upstream to the end of your sampling site.
 * You can use your feet, hands or the net itself (for plant material) is unimportant, as long as you are consistent between your sites (as you are comparing them).
 * You should get at least 50 macro-invertebrates though to have a good sample. This might come out of a 50cm x50cm area, or you might need to go bigger (consistency between sites).
 * Alternatively you may need to spend some time walking around and upturning rocks to see what crawls out from underneath them.

Simpson Diversity Index

D= N(N-1) N= Total number of organism --- n= Number of individual of each species E n(n-1)

Survey Question

1)What type of fish in Ho Tay which are most sensitive to polution? --> Does that fish still lived in Ho tay?

2)What type of fish are there in the lake that seem to decrease?

3)What type of fish you have seen to be increse ?

Catfish Common Carp

4)What type of fish you have caught the most recently?

Catfish

5)What type of fish you dont catch to much often anymore?

Ca nhung

6)What type of human impact have causes this change ( both increase and decrease in population ) ?

Trash, can , plasticbag, bottle.. 7)With this change how does it impact you/familly?

Wife doesnt let him to come back home if he doesnt caught enough fish that will worth 1million vnd per day Some just fish for fun 8)Does this change lower your income?