Tuesday, April 23, 2013

Energy Flows Through Ecosystem

1. How Does light and Nutrients affect productivity in the ocean?
- Producers use solar energy to produce organic plant materials through photosynthesis.

2. What factors affect the Ability of an ecosystem to support multiple trophic levels.
- Amount of energy ecosystem, energy loss between trophic levels, predators.

3. Describe the process bioaccumulation, and describe the DDT Example.
- Consequences of the loss of energy between trophic levels
- DDY caused eagles an other raptors to lay thin shells eggs. that would break in their nests.

Friday, April 19, 2013

animal habitat structu

1. How does eelgrass density influence abundance of species in an ecosystem?
My hypothesis: The more dense the eelgrass, the more biodiverse the ecosystem because of the more availability for shelter and food.

Websites to support hypothesis:
                                                  1. http://goo.gl/IEgBK
                                                  2. http://goo.gl/X9o5w

Energy Flows Through Ecosystems

1.) a. Examples of Primary Producers are, and b. how do they get their Energy?
Producers - use solar energy to produce organic plant material through photosynthesis.

2.) a. the second trophic level is made up of water creatures and b. from where do they get their energy?
Herbivores - feed souly on plants.

3.) why do predators make up the third trophic level?
because they feed at several trophic levels , ex - bears eat berries and salmon.

Thursday, April 11, 2013

1. San Diego Bay is home to a list.of Natural Resources. what are they
- Salt marsh tidal Flats, fish habitats.
2. What is an Invasive Species & How would they have been introduced in SD bay ?
- invasive species are Non native species introduced by fore gin ships.
3. What is an Endangered species? What is being done to protect the species.
- species on the brink of extinction green sea turtles San Diego Bay provides protected foraging habitat.


Wednesday, April 10, 2013

1. San Diego Bay is ... (Location, Size, Interesting Facts
- 19 km x 1.6 to 4.8 km
2. What Types of Activities occur on the Bay?
- headquarters for major ships of US Navy, container ship ports NASSCO.
3. How & where on the Bay is salt made?
- Edge of Chula Vista bay through Euaporation
4. Where is the SD National Wildlife refuge complex located?
- in the largest mud flats in so California (Chula Vista)