Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Understanding the Time series plots
Time series plots show the changes in each indicator as a function of time, over the period 1980-present. Each plot also shows horizontal lines that indicate the median (middle) value of that indicator, as well as the 10th and 90th percentiles, each calculated for the entire period of measurement. Time series plots were only developed for datasets with at least 10 years of data. Two symbols located to the right of each plot describe how recent values of an indicator compare against the overall series. A black circle indicates whether the indicator values over the last five years are on average above the series 90th percentile (plus sign), below the 10th percentile (minus sign), or between those two values (solid circle). Beneath that an arrow reflects the trend of the indicator over the last five years; an increase or decrease greater than one standard deviation is reflected in upward or downward arrows respectively, while a change of less than one standard deviation is recorded by a left-right arrow.
American Samoa Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Guam Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Main Hawaiian Islands Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Northern Mariana Islands Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Florida Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Flower Garden Banks Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Puerto Rico Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
USVI Coral Cover
Status and Trend analyses are not appropriate for these data
Percent hard coral cover is defined as a measure of what percentage of the reef bottom (benthos) is living stony coral.
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is living stony coral within sampled areas.
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provide critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
American Samoa Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Guam Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Main Hawaiian Islands Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Northern Mariana Islands Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Florida Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Flower Garden Banks Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
Puerto Rico Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
USVI Macroalgae
Status and Trend analyses are not appropriate for these data
Percent macroalgae cover is defined as a measure of what percentage of the reef bottom (benthos) is macroalgae
Data Interpretation:
Time series: The time series shows the percent of the reef bottom that is macroalgae within sampled areas
Description of Coral Reefs:
Coral reefs are some of the most diverse and valuable ecosystems on Earth. Though they cover less than one percent of the Earth’s surface, they are estimated to provide ecosystem services (economic and environmental services) worth billions of dollars each year. Healthy reefs protect islands and coasts from storm surge, contribute to local economies through tourism (i.e., sportfishing, snorkeling, and diving), and provides critical food resources for tens of millions of people particularly in developing island nations. Live hard coral cover is an indicator of coral reef health, while changes in macroalgae cover relative to corals is an indicator of ecological change on reefs.
Data Source:
Data for hardcoral cover and macroalgae cover were obtained from NOAA’s National Coral Reef Monitoring Program (NCRMP) and summarized through the program’s Data Visualization Tool. Data and supplemental information on data collection can be directly downloaded through the link below.
Source: NCRMP Data Visualization Tool
For the most up to date data, please reference the original source linked above. Please be aware that data referenced from the original source has been modified and may differ from those data displayed on this website.
NOAA National Coral Reef Conservation Program Digital Corals
Digital Corals is the Coral Reef Conservation Program's information portal that provides access to NOAA coral reef information and data products with emphasis on the U.S. states, territories, and remote island areas.
NOAA Coral Reef Watch
To address a defined need of coral reef managers around the world, NOAA established the Coral Reef Watch (CRW) program in 2000. For more than 20 years, NOAA CRW has utilized remote sensing, modeled and in-situ data to predict, observe, and alert users globally to threats to the coral reef environment. The near real-time satellite products and modeled Outlooks that comprise CRW's global early-warning system of coral reef environmental changes have successfully and accurately predicted and monitored all major mass coral bleaching events observed globally since 1997, and have provided other critical information to users, especially during periods of severe ocean heat stress.
NOAA National Coral Reef Monitoring Program
The National Coral Reef Monitoring Program is a strategic framework for conducting sustained observations of biological, environmental, and socioeconomic indicators in U.S. states and territories. The resulting data provide a robust picture of the condition of U.S. coral reef ecosystems and the communities connected to them.
NCRMP Data Visualization Tool
This is a GIS-based tool that allows you to see where and when coral data were collected, visualize status and trends, and download summarized data in an easier way than ever before.
NOAA National Marine Sanctuaries Condition Reports
Condition reports are used by NOAA to assess the condition and trends of national marine sanctuary resources and ecosystem services. These reports provide a standardized summary of resources in NOAA’s sanctuaries, driving forces and pressures on those resources, and current conditions and trends for resources and ecosystem services. These reports also describe existing management responses to pressures that threaten the integrity of the marine environment.
