Corals 🔭 📊

Course	Course Name	Student
CAP 6737	Interactive Data Visualization	Luis A. Rivera

Abstract

The idea is to obtain a coral dataset containing coral information such as location, coral bleaching, or coral diseases with enough different corals and/or metrics to generate multiple visualizations of the data set for further analysis. A dashboard containing different graphs showing the information in different forms which could even lead to detecting any similarities in between the coral samples.

Coral Datasets

Coral datasets available inside the data directory. Coral data sets descriptions can also be found in text format inside the data directory.

Introduction

Coral Reefs 101 by National Geographic

Coral Bleaching & Diseases

Coral Bleaching is the process by which coral losses its own major source of food which is algae surrounding it Figure 1. When algae leave the coral, it becomes vulnerable to diseases. This can be caused by many factors such as changes in ocean temperature, ocean pollution, overexposure to sunlight, extreme low tides, overall climate changes (CO2), ocean acidification (pH level changes), climate precipitation, altered ocean currents, storms, sea level rise, global warming and among many other Figure 2.

In addition, coral can be affected by diseases caused by infections from bacteria, viruses or stressors as previously mentioned in Figure 2 which slowly kill the coral by consuming the living tissue or leaving large patches of coral tissue to slough off exposing coral’s skeleton. Some of these diseases are Black-band disease, Dark-spot disease, Patchy necrosis (white pox), White plague, White-band disease, Yellow-band disease, Algae disease, Fungal disease and many others. See Figure 3 to Figure 11 in Appendix for a visual picture of coral diseases.

Data Preparation Summary

Data: CoralBleaching.csv

Variable Name	Variable Changes
id
region	Blanks recoded to NAs
subregion	Blanks recoded to NAs
country
location
lat
lon
month	Dropped
year
depth	Dropped
severity_code
bleaching_severity	Level "Severity Unknown" recoded to "Unknown"
coral_family	Reduced levels from 121 to 23
coral_species
percentage_affected	Conversion to Numeric
bleaching_duration	Dropped
mortality_code	Conversion to Categorical & Reduced levels from 6 to 4
mortality	Conversion to Numeric
recovery_code	Dropped
recovery	Dropped
survey_type	Dropped
survey_area	Dropped
water_temperature	Conversion to Numeric
other_factors	Dropped
remarks	Dropped
source
reference_code	Dropped
country_code

Data: CoralDisease.csv

Variable Name	Variable Changes
id
disease_type	Reduced levels from 52 to 11
year
lat
lon
region	Blanks recoded with NAs
subregion	Blanks recoded with NAs
country
location
nearest_town
genus_species
percentage_incidence
disease_remarks	Dropped
mortality_percentage
diseased_percentage
reference_id	Dropped
remarks	Dropped
country_code
source

Data Visualization

Coral Bleaching Data Viz

Dashboard	Description
Bleaching Observations Map	Coral reef observations colored by bleaching severity across the world.
Coral Severity Levels	Overall number of coral reefs per bleaching severity (class).
Coral Mortality Levels	Overall number of coral reefs per mortality level (class).
Water Temperature over Years	Average water temperature over the years captured. Also displays it by bleaching severity.
Percentage of Corals Bleached by Water Temperature	Percentage of corals bleached during observation as water temperature increases (hotter).
Percentage of Corals Bleached by Mortality Level	Percentage of corals bleached during observation as mortality level increases.

Coral Disease Data Viz

Dashboard	Description
Disease Observations Map	Coal reef observations colored by disease type across the world.
Coral Diseases	Overall number of coral reefs per disease.
Percentage of Coral Disease by Area Affected	Percentage of coral disease incidence (rate) versus diseases area affected in the coral reef.
Percentage of Coral Disease by Mortality Level	Percentage of coral disease incidence (rate) as mortality level increases.

License

Go to LICENSE for more information. Any work from NOAA or ReefBase must follow their respective citation, licensing and terms accordingly. Go to NOAA.gov or ReefBase.org for more information.

References

[1] NOAA. Are corals animals or plants? National Ocean Service website, https://oceanservice.noaa.gov/facts/coral_bleach.html, accessed on 04/21/2018.

[2] ReefBase: A Global Information System for Coral Reefs. March, 2018. http://www.reefbase.org.

[3] National Geographic. Coral Reefs 101 | National Geographic. November 7, 2017. https://youtu.be/ZiULxLLP32s.

[4] NOAA. What is coral bleaching? National Ocean Service website, https://oceanservice.noaa.gov/facts/coral_bleach.html, accessed on March 2018.

[5] NOAA. How does climate change affect coral reefs? National Ocean Service website, https://oceanservice.noaa.gov/facts/coralreef-climate.html, accessed on March 2018.

gitluis / coralviz Goto Github PK

coralviz's Introduction

Corals 🔭 📊

Abstract

Coral Datasets

Introduction

Coral Bleaching & Diseases

Data Preparation Summary

Data Visualization

License

References

Appendix

Figure 1. Coral Bleaching

Figure 2. Coral Threats

Figure 3. Healthy Coral

Figure 4. Bleaching Coral

Figure 5. Black-band Disease

Figure 6. White-band Disease

Figure 7. White plague Disease

Figure 8. Yellow-band, White-band, Black-band Diseases

Figure 9. Dark-spot Disease

Figure 10. White Pox Disease

Figure 11. White Plague Type 2 Disease

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