Ocean Acidification - Food Chain, Food Web, & Biodiversity by Eileen Nguyen [Student FVHS]

Short Video on Ocean Acidification

cpark101 — 2015-03-27 21:46:56 UTC

As CO2 Rises in Atmosphere Ocean Acidification Increases

jhnguyen138 — 2015-03-30 21:14:36 UTC

Ocean Acidification Increases Over the Years

cpark101 — 2015-03-30 21:15:54 UTC

National Geographic

enguyen116 — 2015-03-30 21:38:50 UTC

Earth's oceans have been able to maintain a stable acidity level til now. Fossil fuel-powered machines have led to emissions of billions of tons of carbon dioxide and other greenhouse gases in the atmosphere. The oceans absorbing the CO2 helped slow down the climate change, but is instead affecting the oceans' acidity levels. The oceans are currently absorbing about a third of human-created CO2 emissions. Shell-forming animals can be gravely affected if this continues to get worse.

CNN: Ocean Acidification

jhnguyen138 — 2015-03-30 21:52:59 UTC

The world's oceans have become 26% more acidic since the start of the Industrial Revolution due to the emissions from human activities such as fossil fuel burning. Scientists say that the rate of change is faster than at any time in the last 300 million years, and predict that by 2100 there will have been a 170% increase in ocean acidity. Oceans currently act as a CO2 "sinkhole" absorbing approximately a quarter of emissions. Ocean Acidification can affect tourism, food security and shoreline protection.

cpark101 — 2015-03-31 21:17:33 UTC

As the amount of dissolved carbon dioxide increases, the pH of the ocean decreases. Therefore making it more acidic.

Causes of Ocean Acidification

enguyen116 — 2015-03-31 21:34:06 UTC

This picture shows a clam, a key food source to other organisms, in different levels of acidic seawater. It is clearly shown that the clam is dramatically shrinking.

Climate Interpreter: Effect to the Marine Food Chain

enguyen116 — 2015-03-31 21:35:30 UTC

Ocean acidification is affecting many organisms that form the marine food chain. This is seen in a negative way due to the change of pH level of the ocean water. Since carbon dioxide is bonded with water molecules to form hydrogen bonds and carbonic acid, carbonic acid is produced much more. Many organisms need carbonate ions to form calcium carbonate that is needed for their shells. Due to this problem, carbonate ions are reducing. Many organisms that form the the marine food chain are affected by this. If they start to disappear this could lead to affecting everyone in the environment.

The pH Scale

christinaaaaaa — 2015-04-01 04:01:30 UTC

A Student's Guide to...

christinaaaaaa — 2015-04-01 04:40:36 UTC

Global Climate Change

As more carbon dioxide is being added to the atmosphere, oceans are absorbing more and more of these molecules, and therefore causing it to become more acidic. If the carbon dioxide levels continue to rise, the acidity level will rise and thus affecting different marine organisms. Like a chain reaction, other organisms in the food chain will start getting affected.

How can we fix it?

cpark101 — 2015-04-01 05:00:14 UTC

- reduce greenhouse gas emissions

- transportation alternatives, efficient vehicles

- use CFLs

- don't waste so much food

- Plant more Trees

What are the effects?

cpark101 — 2015-04-01 21:08:21 UTC

- warmer oceans

-changes in biodiversity

-rising sea levels

Why should we care?

cpark101 — 2015-04-01 21:15:46 UTC

- because we are causing it

- there will be a huge economic impact

- effects the food web

- fishing industries

- tourism

- species composition

- altering biodiversity

How Does Ocean Acidification Affect Biodiversity?

christinaaaaaa — 2015-04-01 21:23:12 UTC

How does your assigned environmental topic relate to your issue

cpark101 — 2015-04-02 04:26:53 UTC

Ocean acidification is related to biodiversity because if the oceans continue to become more acidic as time goes by, many shell-making species will be affected negatively. It will cause them to be at risk. If they become at risk, the whole food web will be may also be at risk. People depend on the oceans to provide food for them. If one species start being at risk, it causes the other species to start becoming at risk because they will not have much to eat. If a species is at risk, it will affect biodiversity because one by one the species can be dying off which causes there to be less of a variety in species in the oceans' environments. Therefore ocean acidification affects the food web, food chain, and biodiversity.

WARNING

jhnguyen138 — 2015-04-02 04:40:44 UTC

Biodiversity

jhnguyen138 — 2015-04-02 05:19:15 UTC

Food Chain and Food Web

jhnguyen138 — 2015-04-02 05:51:16 UTC