Homework: Earth Observations of Blue Carbon Ecosystems

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This homework includes questions from both parts of the training series. You might want to record your answers on a sheet of paper or word document before submitting them here. You will not be able to save your answers and return to complete this form at a later time.

To receive a certificate of completion, you must have attended both parts and have completed this homework by December 19, 2024. Once you submit the homework, you will receive an email with a copy of your responses.

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Name (First Last) *

What makes mangrove, sea grass, and salt marsh ecosystems actionable for climate mitigation? *

5 points

The presence of high carbon stocks

Evidence of long-term carbon storage

The capacity for people to manage and effectively measure GHG emissions and removals resulting from changes to these ecosystems

All the above

What makes blue carbon ecosystems distinct from other carbon ecosystems? *

5 points

Blue Carbon is carbon that is stored, captured, and removed by ocean systems.

Blue Carbon ecosystems are found in tropical, low-latitude regions.

Blue Carbon ecosystems provide short-term carbon storage.

Blue Carbon is carbon that is located under the ocean’s surface.

There is a single mangrove mapping method that should be used for all objectives, such as mapping mangrove extent and change for national level reporting, or mapping mangroves to develop and sell blue carbon credits. *

5 points

True

False

There are several existing datasets available for mangrove extent, height, and biomass. What are some key considerations when choosing a dataset?

A) Spatial Resolution

B) Date Range

C) Dataset Calibration over your Region of Interest

5 points

A & C

A & B

B & C

A, B, & C

What characteristic of mangrove ecosystems can be measured using remote sensing techniques and is directly related to biomass estimation, and subsequently mangrove ecosystem carbon stock? *

5 points

Canopy Height

Vegetation Health

Sea Salinity

Tree Diameter

When using remote sensing information to map salt marsh extent, what variables or characteristics increase the accuracy of classification?

A) Elevation

B) Lower Spatial Resolution

C) Higher Spatial Resolution

D) Single Image

E) Multi-Day Image Composite

5 points

A, B, & D

A, B, & E

A, C, & E

C & E

When using remote sensing observations to map seagrass extent, high tide conditions are desired for ideal detection. *

5 points

True

False

For Tier 1 analyses, carbon stocks can be estimated by multiplying the ecosystem extent and a global Tier 1 estimate of carbon per hectare for that ecosystem. *

5 points

True

False

Earth observation data of carbon stocks in blue carbon ecosystems can inform decision making in which of the following contexts? *

5 points

In policy, by improving understanding of the areal extent and existence of blue carbon ecosystems and monitoring for national GHG inventories to inform nature-based climate solutions.

In carbon projects, by identifying project areas, setting baseline rates of ecosystem degradation or loss, estimates of biomass, monitoring effectiveness, and project implementation.

In resource management, through surveillance of illegal destruction and degradation of ecosystems , and by monitoring the health and condition of aboveground vegetation.

All of the above

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