Energy Flows Through Ecosystems

1. How does light and nutrients affect productivity in the oceans?

* Light penetrates the higher level of the ocean and causing photosynthesis to occur there.



2. What factors affect the ability of an ecosystem to support multiple tropic levels?

* The amount of energy , energy loss between tropic levels, and form, structure, and physiology of organisms at each level affect the ability of an ecosystem to support multiple tropic levels.



3. Describe the process bio accumulation, and describe the DDT example.

* The process of Bioaccumulation is where contaminants build up the food web and threaten higher level organisms. For example, DDT built up in Eagles around the 60's and eventually messed up their reproduction essentially thinning the eggs causing the mothers to crush them without intent.

Energy Flows Through Ecosystems

1. A.) Some examples of primary producers are phytoplankton, plants, algae, and certain bacteria.

B.) They are using solar energy to produce organic plant material through photosynthesis.

2. A.) The second tropic level is made up of herbivores.

B.) They get their energy source from eating plants.

3. Predators make up the third tropic level because they eat second tropic level animals and other small predators.

Animal Habitats of San Diego Bay

1. What are the Natural resources of SD Bay?
* Salt Marsh, tidal flats, bird nesting, foraging sites, eelgrass beds, and nine federal and state listed endangered or threatened species


2. What is an invasive species, and how would they have been introduced in SD Bay?
* Those that evolved elsewhere and whom caused harm to our health, environment, or economy. They came from fishery, boat hulls, or spread through dispersal.


3. What is an endangered species? What is one endangered species of SD Bay? What is being done to protect this species?
* Species close to extinction. They keep a close eye on predators and " attribute the higher productivity to the enhanced habitat quality."

Introduction to San Diego Bay

Source - http://goo.gl/g4rLt

1. San Diego Bay is... Located in San Diego County, CA near the U.S Mexico border. It is the third largest of the protected natural bays in California measuring at 12 mi. Long and 1-3 mi. Wide.

2. What types of activities occur on the bay? The Big Bay Boom on July 4th and the Feb 2011 "Parade of Flight"

3. How and where on the Bay is salt made? The shallow southern end of the bay, where salt is extracted from evaporation ponds

4. Where is the San Diego National Wildlife Refuge complex located? San Diego County and Orange County

5. What is the purpose of the San Diego National Wildlife? To preserve and protect rare birds of Southern California