Sampling+in+Aquatic+Environments

Biotic Sampling This refers to measuring the types of different plants and animals that are located in an ecosystem ( which we call the diversity ) and how many of each different organism is observed in the ecosystem ( this is called abundance )

How do we collect organisms so we can identify them and count them?

1) Large mammals, reptiles, amphibians, and birds  - we take pictures of them and use field guides to help us find their names. We count how many of each we observe and record this number.

2) Insects - flying insects  can be capture by dip nets. Swish the net through grass or weeds to capture crawling insects .

Water insects - can be captured using the dip nets as well as dredges made out of bottles cut in half. How to make dredge

<span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">media type="youtube" key="pTYDW2hn4fc" height="315" width="420" <span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">want to make fishing dip net?

<span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">3) Sampling fish - big fish are usually caught using a gill net <span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">smaller fish (forage fish are usually caught using a seigne net) <span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">media type="file" key="seine_video.wmv" width="300" height="300"

<span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">Abitoic Sampling <span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">1) Sunlight penetration - secchi disk <span style="font-family: 'Arial Black',Gadget,sans-serif; font-size: 150%;">media type="file" key="secchi_disc.avi"