What is Ocean Acidification?

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Communicating Ocean Acidification Workshop A1 March 29, 2018 College of the Holy Cross, Worcester MA Annual MEES Conference

Juliet Simpson Carolina Bastidas

Schedule Outline, 9:45 – 11 am • • • • • •

9:55 Introductions 10:05 OA hands-on activity - Introduction 10:30 Rotation among four activity parts 10:35 Individual perceptions 10:55 Group discussion of OA activity Wrap-up, where to find materials and results

Communicating Ocean Acidification Workshop, MEES Conference 2018

Introductions Take the next 2 min to fill in your Individual Sheet with information for your introduction We’ll go around with up to 30 sec per introduction

Communicating Ocean Acidification Workshop, MEES Conference 2018

Communicating Ocean Acidification Workshop, MEES Conference 2018

Communicating Ocean Acidification Workshop, MEES Conference 2018

Previous audience for OA handson activities Cambridge Scientific Festival- Spring 2015- General Public + 35 kids High School Marine Science Symposium, NEU, Spring 2016, 60 students High School Marine Science Symposium, NEU, Spring 2017, 40 students Nauset High School at the Cape Cod NPS, Dec 2017, 25 students High School Marine Science Symposium, NEU, Spring 2018, Table Demo

Communicating Ocean Acidification Workshop, MEES Conference 2018

Communicating Ocean Acidification Workshop Objectives

• To provide hands-on activities tailored to middle and high school students as a starting point to communicate about OA • By doing these activities, you will provide feedback that might help to modify them towards your own needs • To discuss alternative ways to communicate OA with hands-on activities

Communicating Ocean Acidification Workshop, MEES Conference 2018

Ocean acidification hands-on activity Activity Sheet- What will you do Individual Sheet- Your perception of each part

Communicating Ocean Acidification Workshop, MEES Conference 2018

Communicating Ocean Acidification Workshop, MEES Conference 2018

Ocean acidification Hands-on Activity By the end of this session you will be able to:

define what is OA and recognize two impacts for marine life

Communicating Ocean Acidification Workshop, MEES Conference 2018

What is acidity? More [H+]

More [OH-]

pH= -log[H+] A substance of pH 7 has a concentration of H+ of 10-7 mol/L Communicating Ocean Acidification Workshop, MEES Conference 2018

What is the acidity of water?

Communicating Ocean Acidification Workshop, MEES Conference 2018

Climate change- major driver

http://scrippsco2.ucsd.edu/graphics_gallery/mauna_loa_record

When CO2 dissolves in seawater

Source: EPOCA report- OA the Knowledge Base 2012

Working stations ~ 7 min each 1. 2. 3. 4.

Video Wet shell experiment Dry shell detective Breathing

Communicating Ocean Acidification Workshop, MEES Conference 2018

Working stations - RESULTS 1. 2. 3. 4.

Breathing Wet shell experiment Dry shell detective Video

Communicating Ocean Acidification Workshop, MEES Conference 2018

1. Breathing- RESULTS • What happened to sol? • Add NaOH • A gas can dissolve in a solution • CO2 dissolves in solution • Atmospheric CO2 can dissolve in seawater which becomes more acidic

2. Wet shells- RESULTS • What did you observed? • What compound might be in the bubbles? CaCO3(s) +2 CH3COOH(aq)

Ca(CH3COO)2(aq) + H20(l) + CO2(g)

• If CaCO3 reacts with vinegar, what might happen to the animal within a shell in acidic conditions? • To the mussels? Communicating Ocean Acidification Workshop, MEES Conference 2018

3. Shell detective- RESULTS

+ 24h

• Which shells were acid treated? Shell number

Species

Pre-treatment weight (g)

3

Quahog

213.0

6

Quahog

17.56

9

Oyster

11.72

13

Quahog

10.5

17

Quahog

17.51

18

Quahog

10.66

19

Quahog

160.0

21

Quahog

25.53

22

Oyster

15.32

23

Quahog

12.04

Weight today

Acid treated? (Y/N)

Communicating Ocean Acidification Workshop, MEES Conference 2018

4. Video- RESULTS • Is predator fish behavior changed by acidic waters? – YES – sharks either cannot smell prey or don’t understand that the smell means something good to eat

• Is prey fish behavior changed by acidic waters? – YES – small fish either can’t smell predators or don’t understand that they’re dangerous

Communicating Ocean Acidification Workshop, MEES Conference 2018

More CO2 in seawater--> increased acidity

Communicating Ocean Acidification Workshop, MEES Conference 2018

When CO2 dissolves in seawater

Communicating Ocean Acidification Workshop, MEES Conference 2018

CO2 increases in atmosphere and in water

Communicating Ocean Acidification Workshop, MEES Conference 2018

What is Ocean Acidification? Increase in seawater acidity due to increased atmospheric CO2

How does OA affect skeleton building? Dissolved CO2 also reduces carbonate ions, a building block for calcifying organisms

Does increased [H+] affects other vital functions? Yes, for example olfactory sense

Communicating Ocean Acidification Workshop, MEES Conference 2018

Schedule Outline, 9:45 – 11 am • • • • • •

9:55 Introductions 10:05 OA hands-on activity- Introduction 10:30 Rotation among four activity parts 10:35 Individual perceptions 10:55 Group discussion of OA activity Wrap-up, where to find materials and results

Communicating Ocean Acidification Workshop, MEES Conference 2018

Group Discussion Take the next 10 min to Discuss and write down some key points (Each group please discuss TWO activities) We’ll go around for you to summarize

Communicating Ocean Acidification Workshop, MEES Conference 2018

What is Next? Email from us within a week Shared folder with material of today Summary of Group Discussion List of participants (and contacts, if agreed)

If you have not heard from us Please email us to provide this info [email protected] [email protected] Communicating Ocean Acidification Workshop, MEES Conference 2018

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What is Ocean Acidification?

Communicating Ocean Acidification Workshop A1 March 29, 2018 College of the Holy Cross, Worcester MA Annual MEES Conference Juliet Simpson Carolina B...

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