I live in Texas, what local ecosystem or any ecosystem could I use for an assignment. I have to include its hierarchy of interactions and its biodiversity. I also have to answer how is the ecosystem dependent on the biodiversity as well as one threat to that biodiversity.

This site shows 9 different ecoregions of Texas.

http://www.tpwd.state.tx.us/huntwild/wild/birding/pif/assist/pif_regions/

Other information:

http://www.ehow.com/list_7676671_types-ecosystems-texas.html

http://www.tpwd.state.tx.us/kids/about_texas/regions/

To find a suitable local ecosystem for your assignment in Texas, you can follow these steps:

1. Research: Start by researching the various ecosystems present in Texas. Texas is known for its diverse range of ecosystems due to its varying landscapes, climate, and geography. Some examples of ecosystems found in Texas include prairies, forests, deserts, wetlands, and coastal areas.

2. Consider your location: Since you mentioned you live in Texas, it is practical to choose an ecosystem that is relatively accessible for observation and data collection. For instance, if you live in a coastal area, you might consider researching and studying the coastal ecosystem.

3. Assess ecosystem characteristics: Look into the specific characteristics of each ecosystem you are considering. Consider factors like the primary producers (plants), primary consumers (herbivores), secondary consumers (carnivores), and other organisms that make up the ecosystem.

4. Biodiversity and interactions: Evaluate the hierarchy of interactions within the ecosystem you select. This includes analyzing the relationships between different organisms, such as predator-prey relationships, symbiotic interactions, and the flow of energy within the ecosystem.

5. Ecosystem dependence on biodiversity: Once you have identified an ecosystem and its hierarchical interactions, consider how biodiversity plays a crucial role in sustaining that ecosystem. Think about how different species contribute to the stability and functionality of the ecosystem, such as the roles of primary producers in capturing energy from the sun, the diversity of insect pollinators, or the relationships between predators and prey.

6. Identify threats to biodiversity: Research the major threats that pose risks to the biodiversity of your chosen ecosystem. These threats could include habitat destruction, pollution, invasive species, climate change, or over-exploitation of natural resources. Select one of these threats to discuss in your assignment.

By following these steps, you should be able to identify a local Texas ecosystem that fits the criteria of your assignment, understand its hierarchy of interactions, assess its biodiversity, explain its dependence on biodiversity, and discuss a significant threat to that biodiversity.