Ecosystem Ecology

Ecosystem Ecology

Mrs. Weems

https://www.youtube.com/watch?v=NHqEthRCqQ4

You must copy/paste this link into a separate window because I refuse to pay for the "pro" version of Quizziz. :)

Open Ended

Why is phosphorous essential to all living things?

Open Ended

In your own words, explain the flow of water through the water cycle.

How do large forests play a role in this process?

Gross Productivity refers to the entire photosynthetic production of organic compounds.

Net Productivity refers to the organic compounds that remain after organisms

have used some of the organic molecules for their energy needs (cellular respiration).

Remember that photosynthesizers also carry out cellular respiration & cellular respiration occurs at all times.

Since oxygen gas is a product of photosynthesis and a reactant for aerobic cellular respiration, dissolved oxygen levels are a good way to gauge primary productivity in aquatic environments.

Open Ended

Solve the equation concerning Primary Productivity provided in the photo on this slide.

Open Ended

Primary Productivity Problems and Solutions:

Step by step solutions to the previous problem can be found in the video screencast at:

https://youtu.be/mG27TgUC0ow

https://ed.ted.com/lessons/feedback-loops-how-nature-gets-its-rhythms-anje-margriet-neutel

Copy & Paste the link into a separate window.

Watch the video & answer the questions.

Multiple Choice

It is defined as a community of organisms together within their physical environment.

• Biomes

• Community

• Ecosystem

• Population

Multiple Choice

This type of system maintains itself on a limited amount of resources entrenched in that particular system. It can not renew resources automatically and relies on an outside source for renewal. This type of system is rare in nature as it is not self-sustaining.

• Open ecosystems

• Closed ecosystems

• Ecosystems

• Biomes

Multiple Choice

This system is much more common and is self-sustaining in the fact that it regularly renews and exchanges its own resources.

• Open ecosystem

• Closed ecosystem

• Primary productivity

• Trophic level

Multiple Choice

True or False:

Ecosystems with high species diversity tend to be less stable over time as the biodiversity and ever-changing dynamics lead to disorder.

• True

• False

Multiple Choice

These are very large ecological areas with fauna and flora adapted to their environment. Are often defined by abiotic factors such as climate, geographic relief, geology, soil, and vegetation.

• Ecosystems

• Habitats

• Biomes

• Communities

Multiple Choice

How many essential components do ecosystems have?

• 6

• 4

• 3

• 5

Multiple Choice

The Earth and ecosystems work because of two great and fundamental processes, which are regulated by all the living organisms: energy flux and mass flux, also known as_________

• Open systems

• Biogeochemical cycles

• Chemical energy

• Thermodynamics

Multiple Choice

It is also called water cycle.

• Phosphorus cycle

• Sulfur cycle

• Hydrologic cycle

• Oxygent cycle

Multiple Choice

When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?

• Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.
• The water becomes better able to support aerobic organisms.
• The algae provide food for fishes and other organisms, leading to decreased algae populations.
• The extra nitrogen provides additional food for the other organisms, increasing their population.

Multiple Choice

Is the the science that studies the processes related to the exchange of heat and energy

• Noble gas law

• Thermodynamics

• Biology

• Physics

Multiple Choice

The second law of thermodynamics is based on ... “Energy can be neither created nor destroyed, it can only be transferred or transformed”.

• False

• True

Multiple Choice

Number of times in which energy passes from one organism to another.

• Trophic level

• Connectivity level

• Secondary productivity

• Biomass

Multiple Choice

They occupy the first trophic level. They are photosynthetic and chemosynthetic autotrophic organisms

• Primary consumers

• Tertiary consumers

• Producers

• Secondary consumers

Multiple Choice

Organisms that consume autotrophs. But also, all those that feed on living tissue.

• Producers

• Autotrophs

• Consumers

• Decomposers

Multiple Choice

Those organisms that break down organic matter from dead organisms, transforming it into inorganic matter.

• Autotrophs

• Decomposers

• Heterotrophs

• Carnivores

Multiple Choice

A measure of the rate at which new organic matter is developed through photosynthesis and chemosynthesis in producer organisms.

• Secondary productivity

• Trophic structure

• Primary productivity

• Decomposition rate

Multiple Choice

One way humans can promote the survival of organisms in an ecosystem is to:

• decrease diversity in plant habitats
• introduce new consumers to control autotrophs
• release extra CO2 into the atmosphere to help autotrophs
• learn about the interactions of population

Multiple Choice

One way that humans could have a positive impact on local environments is to:

• generate waste products as a result of technological advances

• use resources that are renewable

• increase planting large areas of one crop

• increase the use of pesticides

Multiple Choice

Environmentalists are hoping to protect endangered organisms by calling for a reduction in the use of pesticides, because loss of these organisms would:

• increase the mutation rate in plants
• cause pesticides to become more toxic to insects
• reduce biodiversity in various ecosystems
• decrease the space and resources available to other organisms

Multiple Choice

The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas suggests that:

• ecosystems are interconnected and human action can alter ecosystem equilibrium.
• recycling programs have failed to conserve biotic resources.
• natural processes can alter ecosystem stability.
• direct harvesting practices have led to irreversible destruction of ecosystems.

Multiple Choice

Whaling was a very profitable profession until whale populations crashed. The global community came together to enact a ban on whaling. However, Japan and Norway have not agreed to stop whaling. Which of the following is the most likely consequence of their decision?

• The whale populations are bouncing back very successfully and are unaffected by Japan and Norway continuing to whale.
• The whale populations are not rebounding as quickly as they might if all of the countries agreed not to hunt whales.
• The whale populations have mutated into new kinds of organisms.
• The whales are getting better at avoiding capture.