Saving Seafood

Summary of Action Items for the 178th Meeting of the WPRFMC

June 5, 2019 — The following was published by the Western Pacific Regional Fishery Management Council:

The 178th meeting of the Western Pacific Regional Fishery Management Council will convene June 25-27, 2019, at the Laniakea YWCA, Fuller Hall, Honolulu, Hawai’i. The Council will consider and may take action on the issues summarized below, including any public comments on them. Written public comments should be received by the Council’s executive director by 5 p.m. (Hawai’i time), Thursday, June 20, 2019, by postal mail, fax or email as indicated below. After June 20, it is the submitter’s responsibility to provide at least 40 copies of the written comment to Council staff at the Council meeting.

Mail: Ms. Kitty M. Simonds
Executive Director
Western Pacific Regional Fishery Management Council
1164 Bishop Street, Suite 1400
Honolulu, HI 96813

FAX: (808) 522-8226
E-mail: info.wpcouncil@noaa.gov

Action Item Summaries
A
1. Specifying Harvest Limits for the Main Hawaiian Islands Kona Crab

The Council will consider specifying multi-year harvest limits for the main Hawaiian Island Kona crab for fishing years 2020-2023. The best scientific information available is the 2019 benchmark stock assessment with catch projection to 2026[1]. Based on this updated information, the maximum sustainable yield was estimated to be at 73,609 pounds and the overfishing limit at 33,989 pounds. The Council’s P* and SEEM* Working Groups and the Scientific and Statistical Committee (SSC) evaluated the scientific, social, ecological, economic, and management uncertainties and recommended a risk level for the Council to consider. The SEEM* working group used a new standardized process developed by the Social Science Planning Committee (SSPC), in which the social, ecological, and economic dimension is used to determine the risk of overfishing, and the monitoring and compliance/management criteria are used to determine management uncertainty. The risk of overfishing informs the Council’s consideration of annual catch limit (ACL) specification, and the management uncertainty informs the Council’s consideration in setting the annual catch target (ACT).

The Council will evaluate the following options:
1) No Action. No harvest limits will be specified for fishing year 2020-2023.
2) Specify the previous harvest limit at 3,500 pounds using the 2015 assessment (Thomas et al. 2015) for fishing year 2020-2023.
3) Specify the ACL equal to the acceptable biological catch (ABC) at P*=38 percent at 30,802 pounds and set an ACT at P*=30 percent at 28,324 pounds based on the P* and SEEM* Analysis using the 2019 benchmark stock assessment.
4) Specify the ACL equal to the ABC at P*=38 percent at 30,802 pounds and set an ACT 10 percent lower than the SEEM* analysis at P*=20 percent at 25,491 pounds using the 2019 benchmark stock assessment
5) Specify the ACL equal to the ABC at P*=38 percent at 30,802 pounds and set an ACT 20 percent lower than the SEEM* analysis at P*=10 percent at 21,243 pounds using the 2019 benchmark stock assessment

At its 178th meeting, the Council will consider taking final action to specify the harvest limits and the accountability measure that will prevent the fishery from overfishing the stock.

citation
[1]Kapur MR, Fitchett MD, Yau AJ, Carvalho F. 2019. 2018 Benchmark Stock Assessment of Main Hawaiian Islands Kona Crab. NOAA Tech Memo. NMFS-PIFSC-77, 114 p. doi:10.25923/7wf2-f040

B
2. Hawai’i Fishery Ecosystem Plan Amendment to Precious Coral Essential Fish Habitat

The Council at its 173rd meeting in June 2018 directed staff to develop options to redefine essential fish habitat (EFH) and any habitat areas of particular concern (HAPC) for precious corals in Hawai’i for Council consideration for a Fishery Ecosystem Plan (FEP) amendment. EFH information was reviewed through the 2015 and 2016 annual Stock Assessment and Fishery Evaluation (SAFE) report cycles and an options paper was developed for the 174th meeting in October 2018.

New observations of precious corals have occurred throughout the region, with research concentrated in the Hawai’i Archipelago. Observations in the territories and of the larval phase of precious corals are rare or nonexistent. However, new information exists to refine the habitat characteristics and geographic extent of deep- and shallow-water precious coral EFH in the Hawai’i Archipelago. Narrative information on which the EFH designations are based and information to fulfill the EFH requirements of fishery management plans may also be used to update the archipelagic FEPs. The redefinition of precious corals EFH is framed in three separate actions: refinement of deep-water species complex EFH; refinement of shallow-water precious coral species complex EFH; and update of the narrative information.

The Council at its 174th meeting reviewed the following options for each of the three actions:
Action 1 – Update EFH for deep-water precious coral species
Options
1) No change (status quo)
2) Revise EFH by depth range
3) Refine the geographic boundary of existing precious coral beds
4) Refine the geographic boundary of existing beds and add new beds

Action 2 – Update EFH for shallow-water precious coral species:
Options
1) No change (status quo)
2) Update geographic extent and habitat characteristics.

Action 3 – Update EFH narrative information
Options
1) Update the FEP narrative information on EFH
2) Do not update the FEP narrative information on EFH

The Council took initial action at its 174th meeting directing staff to prepare an amendment to the Hawai’i FEP to revise the Precious Corals EFH and selected the following preliminary preferred options:

Action 1 – Option 4: Refine the geographic boundary of existing beds and add new beds.
Action 2 – Option 2: Update geographic extent and habitat characteristics.
Action 3 – Option 1: Update the FEP narrative information on EFH.
At its 178th meeting, the Council will consider taking final action to amend the Precious Coral EFH section of the Hawai’i FEP.

C
3. Managing Loggerhead and Leatherback Sea Turtle Interactions in the Hawai’i-Based Shallow-Set Longline Fishery

The Council at its 173rd meeting in June 2018 recommended amending the Pelagic FEP to establish a management framework for the Hawai’i shallow-set longline fishery that consists of 1) annual limits on the number North Pacific loggerhead and leatherback turtle interactions consistent with the anticipated level of annual interactions that is set forth in the current valid biological opinion (BiOp) and 2) individual trip interaction limits for loggerhead and leatherback turtles. The Council also recommended specifications under the framework as follows: 1) annual limits of 37 North Pacific loggerhead turtles and 21 leatherback turtles; and 2) individual trip limit of five North Pacific loggerhead turtles.

The Council’s recommendation for specifying the loggerhead and leatherback turtle annual limits was based on the anticipated level of interactions analyzed in the biological evaluation (BE) initiating reconsultation of the Hawai’i shallow-set longline fishery under the Endangered Species Act (ESA) Section 7 consultation process. As part of its recommendation, the Council noted that it would review its recommendation if the new BiOp from the ongoing consultation results in a jeopardy decision or otherwise results in a different incidental take statement for North Pacific loggerheads or leatherbacks. The new BiOp was originally scheduled to be completed by Oct. 31, 2018, but the draft was not completed in time for the October SSC and Council meeting. Following the October meetings, the National Marine Fisheries Service (NMFS) Pacific Islands Regional Office (PIRO) set a new timeline to deliver the draft BiOp by Jan. 31, 2019, and a final BiOp by Feb. 28, 2019. Due to the federal government shutdown, the draft BiOp timeline was further delayed to March 25, 2019.

At its October 2018 meeting, the SSC received a presentation from the NMFS Pacific Islands Fisheries Science Center (PIFSC) on the population viability analysis (PVA) for loggerhead and leatherback turtles prepared for the ongoing Section 7 consultation. The modeling was conducted in response to a request by the PIRO Protected Resources Division for the purpose of examining the long-term viability of the species. PVA results indicate that the North Pacific loggerhead population has a mean estimated population growth rate of 2.4 precent, while the Western Pacific leatherback turtle population has a mean estimated population growth rate of 5.3 percent. The growth rates reflect long-term population trends based on nesting beach data representing approximately 52 percent of the North Pacific loggerhead turtle population and approximately 85 percent of the Western Pacific leatherback turtle population.

The Council at its 174th meeting in October 2018 reviewed the approach to the assessment for the BiOp and considered the SSC’s report regarding the PVA. The Council recommended convening an interim Council meeting, if needed, to review draft BiOp and consider any revisions to its June 2018 recommendations based on the BiOp and stated that it will reconsider a specification of leatherback individual trip limits if necessary.

The Council convened its 175th Meeting on Dec. 17, 2018, to consider final action on additional mitigation measures for the Western Pacific leatherback turtles in advance of the draft BiOp completion, taking into consideration the results of the PVA model indicating a continuing long-term declining trend of the population. The Council deferred action until the draft BiOp and more complete information on the impacts of the fishery on the Western Pacific leatherback turtles are available to fully inform the Council decision.

The draft BiOp was provided to the Council on March 28, 2019. The Council convened its 177th meeting on April 12, 2019, to review its recommendations on the management framework from the 173rd meeting for consistency with the draft BiOp and to consider taking final action on the management framework. The draft BiOp concluded that the shallow-set longline fishery is not likely to jeopardize the continued existence of ESA-listed species, including loggerhead and leatherback turtles. However, the draft BiOp also contained Reasonable and Prudent Measures (RPMs) that were inconsistent with the Council’s recommended framework. The Council at its 177th meeting maintained its management framework recommendation from the 173rd Council meeting, additionally recommended an individual trip limit of two leatherback turtles and requested that NMFS consider revising the RPMs for consistency with the Council recommended action.

At its 178th meeting, the Council will review the final BiOp for consistency with the 177th meeting recommendations and may consider taking additional final action if any discrepancies remain with the previously recommended action.

D
4. US Participating Territory Longline Bigeye Catch/Allocation Limits

Bigeye tuna comprises a Pacific-wide population that is internationally managed and assessed as separate stocks in the Western and Central Pacific Ocean (WCPO) and Eastern Pacific Ocean (EPO) by the Western and Central Pacific Fisheries Commission (WCPFC) and the Inter-American Tropical Tuna Association (IATTC), respectively. The best scientific information available indicates that both stocks are not subject to overfishing nor are they overfished, according to the stock status determination reference points in the FEP for Pelagic Fisheries of the Western Pacific Region. The scientific bodies of the WCPFC and IATTC will consider new benchmark stock assessments for both stocks in 2020.

In December 2018, the WCPFC agreed on CMM 2018-01, which limits the US longline bigeye tuna catch in the WCPO to 3,554 metric tons (mt) in 2019 and 2020. CMM 2018-01 does not establish an individual limit on the amount of bigeye tuna that may be harvested annually in the Convention Area by Small Island Developing States (SIDS) and Participating Territories, including American Samoa, Guam and the Commonwealth of the Northern Mariana Islands (CNMI). Limits are not provided to the SIDS and Participating Territories in recognition of their fisheries development aspirations.

In 2014, Amendment 7 to the Council’s Pelagic FEP was approved and implemented (50 CFR 665.819). It established the territorial catch/effort and allocation limit measure that provides NMFS with authority to:
Specify annual catch or effort limits for a US Participating Territory, as recommended by the Council, not to exceed any WCPFC-adopted limits;
Specify a limit recommended by the Council authorizing a US Participating Territory to allocate a portion of that specified catch or effort limit to eligible US vessels through a specified fishing agreement; and
Review and approve specified fishing agreements for consistency with the Pelagic FEP and other applicable laws.

The Council must annually review the conservation status of the fishery resource, the needs of fishing communities dependent on the particular fishery resource and consistency with the Pelagics FEP and other applicable laws in considering its recommendations for territorial catch, effort and allocation limits as well as its review of specified fishing agreements. Amendment 7 also established a territorial longline bigeye tuna catch limit of 2,000 mt for each territory and an allocation limit of 1,000 mt for each territory. At its 173rd meeting in June 2018, the Council took final action to modify the territorial catch/effort and allocation limit measure and implementing regulations. Should NMFS approve the action, it will amend the Pelagic FEP to remove the requirement for establishing separate total catch or effort limits for the US Participating Territories in order to establish an allocation limit and also would allow multi-year limits. The Council would annually review any established limits to determine whether the best available scientific information or the needs of fishing communities warrant modifying or rescinding such limits.

At its 178th meeting, the Council will consider recommending territorial bigeye tuna catch and/or allocation limits to take effect beginning in 2020, given the Council’s recommended modification of the territorial catch, effort and allocation limit measure. The Council will consider the following options:
1. No catch or allocation limits (no action)
2. 2,000 mt catch and 1,000 mt allocation limits
3. No catch limit and up to 2,000 mt allocation limits

The Council will also consider the fishing years in which the limits will take effect or expire, in consideration of the requirement for annual review, availability of new scientific information and potential for multi-year limits.

WPRFMC 2019 Public Meetings Notice & Agenda Summaries

May 28, 2019 — The following was released by the Western Pacific Regional Fishery Management Council:

The Western Pacific Regional Fishery Management Council will hold the following meetings on offshore fisheries
management of Hawai’i, American Samoa, Guam, Commonwealth of the Northern Mariana Islands (CNMI) and Pacific Remote Island Areas. Unless otherwise noted, the meeting will be held at the Council office, 1164 Bishop St., Suite 1400, Honolulu. For more information and complete agendas, go to www.wpcouncil.org, email info.wpcouncil@noaa.gov, fax (808) 522-8226 or call (808) 522-8220.

Mariana Archipelago Fishery Ecosystem Plan (FEP)-Guam Advisory Panel (AP)
Guam Division of Aquatics and Wildlife Resources Conference Room, 163 Dairy Road, Mangilao, Guam
June 6 (Th) 6 p.m. to 7:30 p.m.
Major agenda items: Territorial bigeye action item; AP Plans; Guam fishery issues.

American Samoa (AS) Archipelago FEP AP
Native American Samoa Advisory Council Building, Pava’iai’i Village, Tutuila, AS
June 12 (W) 5:30 p.m. to 7:30 p.m.
Major agenda items: Territorial bigeye action item; AP Plans; AS fishery issues.

Mariana Archipelago FEP-CNMI AP
Micronesian Environmental Services Conference Room, Garapan, Saipan
June 13 (Th) 6 p.m. to 8 p.m.
Major agenda items: Territorial bigeye action item; AP Plans; CNMI fishery issues.

132nd Scientific and Statistical Committee
June 18-20 (T-Th) 8:30 a.m. to 5 p.m.
Major agenda items: Setting the Acceptable Biological Catch for the main Hawaiian islands (MHI) Kona crab; Territory bigeye tuna catch/allocation limits.

Hawai’i Archipelago FEP AP
June 20 (Th) 9 a.m. to 12 p.m.
Major agenda items: MHI Kona Crab ACL; AP Plans; Hawai’i fishery issues.

Fishery Data Collection and Research Committee (FDCRC)
June 24 (M) 8:30 a.m. to 12 p.m.
Major agenda items: Regulations for mandatory license and reporting; Data collection improvement updates; Pacific insular fisheries monitoring and assessment planning summit; FDCRC strategic plan and Marine Recreational Information Program regional implementation plan updates.

Executive, Budget and Legislative Standing Committee
June 24 (M) 9 a.m. to 11 a.m.
Major agenda items: Financial and administrative matters; Council standard operating policies and procedures; Council family changes.
Note: A 9:30-10 a.m. litigation briefing will be closed to the public.

Pelagic and International Standing Committee
June 24 (M) 1 p.m. to 3 p.m.
Major agenda items: Managing loggerhead and leatherback sea turtle interactions in the Hawaii-based shallow-set longline fishery; Territory bigeye tuna catch/allocation limits.

178th Council Meeting
Laniakea YWCA, Fuller Hall, 1040 Richards Street, Honolulu, HI
June 25-27 (T-Th) 8:30 a.m. to 5 p.m.
Major agenda items: Options for specifying ACLs for the MHI Kona crab; Hawai’i FEP amendment to precious coral Essential Fish Habitat; Managing loggerhead and leatherback sea turtle interactions in the Hawai’i-based shallow-set longline fishery; Territory bigeye tuna catch/allocation limits.

Fishers Forum – Fishing in the Future: Emerging Technologies in Fisheries
Ala Moana Hotel, 410 Atkinson Dr, Honolulu, HI
June 25 (T) 6 p.m. to 9 p.m.

Tradition-Based Natural Resource Management: Practice and Application in the Hawaiian Islands

May 22, 2019 — The following was released by the Western Pacific Fishery Management Council:

Palgrave Studies in Natural Resource Management has just announced the release of “Tradition-Based Natural Resource Management: Practice and Application in the Hawaiian Islands” by Ed Glazier. The book offers an overview of bottom-up management of natural resource management that can be applied globally; spotlights Native Hawaiian advocacy for traditional management of the island’s natural resources; and provides a framework for resource managers, scientists and policymakers as well as indigenous populations. It highlights the Aha Moku system of natural resource management.

In the Foreword, Kitty M. Simonds, executive director of the Western Pacific Regional Fishery Management Council, writes: “From the resurgence of non-instrument navigation and traditional voyaging canoes to familiar activities like baby lua’u and other pa’ina (celebratory feastings), Ed shows that continuing and reclaiming the indigenous culture occurs on many levels and involves both Native Hawaiians and those who have come to call Hawai’i home.”

For more information, go to https://www.palgrave.com/us/book/9783030148416

NOAA teams departing for expedition to Papahanaumokuakea Marine National Monument

May 15, 2019 — It’s time again for a team of researchers to head out to the Northwestern Hawaiian Islands at Papahanaumokuakea Marine National Monument, where they will set up camps for the next five months.

The National Oceanic and Atmospheric Administration’s Ship Oscar Elton Sette departs on Wednesday for Papahanaumokuakea, one of the largest, protected marine conservation areas in the world and home to endangered Hawaiian monk seals, threatened green turtles and millions of seabirds.

NOAA researchers this year will conduct the usual tasks — measuring and tagging all weaned Hawaiian monk seal pups, conducting beach counts and removing marine debris. A team of biologists will also measure and tag basking and nesting sea turtles and monitor nesting activities at French Frigate Shoals.

Another field team, however, will focus on researching how animals responded to the loss of East Island at French Frigate Shoals, where a majority of Hawaii’s green sea turtles nest, and dozens of Hawaiian monk seals pup. East Island was washed away by Hurricane Walaka in October 2018.

Field researchers from NOAA, along with six partner organizations, will focus their research and conservation activities at French Frigate Shoals as well as Laysan Island, Lisianski Island, Pearl and Hermes Reef and Kure Atoll. They will also take day trips to survey Niihau, Nihoa, and Mokumanamana islands and Midway Atoll.

The NOAA Ship Oscar Elton Sette will transport state Department of Land and Natural Resources staff and supplies to Kure Atoll. At Lisianski Island, the U.S. Fish and Wildlife Service will help the NOAA team find routes through the dense vegetation that blocks the shoreline and access to monk seals.

Read the full story at the Honolulu Star-Advertiser

Partnering to Protect and Study Monk Seals and Sea Turtles: Northwestern Hawaiian Islands Field Camps 2019

May 15, 2019 — The following was released by NOAA Fisheries:

The NOAA Ship Oscar Elton Sette will deploy researchers to set up camps in the Northwestern Hawaiian Islands for 5 months. Field researchers from NOAA and six partner organizations will conduct research and conservation activities at French Frigate Shoals, Laysan Island, Lisianski Island, Pearl and Hermes Reef, and Kure Atoll. They will also take day trips to survey Niʻihau Island, Nihoa Island, Mokumanamana Island, and Midway Atoll.

Over the next 5 months, these field teams will measure and tag all weaned seal pups, identify all individuals, conduct beach counts of seals, remove marine debris, and conduct additional scientific and recovery efforts to protect the Hawaiian monk seal population. Additionally, a team of sea turtle biologists will be deployed at French Frigate Shoals to monitor nesting activities, assess nesting and hatching success, and measure and tag basking and nesting turtles.

To protect these fragile ecosystems from invasive species, the crew must quarantine anything brought ashore. That includes clothes, tents, stoves, boats, solar power arrays, computers, and provisions sufficient to sustain teams of 2–7 scientists for the length of their stay. They transport the gear by hand from the ship to small boats, which shuttle it to the islands.

One of the field teams will have a special focus this year at French Frigate Shoals. In October 2018, Hurricane Walaka passed through the Northwestern Hawaiian Islands and caused major damage to the islands of this atoll. East Island, where a majority of Hawaiʻi’s green sea turtles nest and dozens of monk seals pup, was completely washed away. Over the summer, field staff will research how animals respond to the loss of this important island.

Read the full release here

Researchers push back against Hawaii shark protection bill

May 13, 2019 — Legislation meant to protect Hawaii’s shark population was altered at the 11th hour to remove the apex predators from the bill amid concerns from the scientific community.

The bill was intended to extend protections already in place for manta rays to include all rays and sharks, West Hawaii Today reported Tuesday.

It would have made it illegal to “capture, take, possess, abuse, or entangle any shark, whether alive or dead, or kill any shark, within state marine waters,” the measure said. There were exceptions for academic research, but the scientific community found them inadequate.

University of Hawaii shark researcher Kim Holland said researchers would be forced to apply for permits from Department of Land and Natural Resources personnel without scientific expertise.

“It will be virtually impossible to prove that someone is ‘knowingly’ fishing for sharks,” wrote Holland, adding state enforcement resources are already insufficient for current polices.

Holland also said the bill was too ambiguous in defining terms such as “take” and “harassment.”

Read the full story from the Associated Press at the Star Advertiser

Place-Based Management Can Protect Coral Reefs in a Changing Climate

April 30, 2019 — Researchers from the state Department of Health and the University of Hawai‘i at Mānoa have developed and applied a new technology in Hawai‘i that identifies where coral reef ecosystems and associated fisheries are vulnerable to human activities and where to focus management actions to minimize anthropogenic impacts.

The authors of the newly published study in the journal Ecological Applications identified specific locations on land where improved wastewater management and landscape practices would yield the greatest benefits for downstream reefs in terms of mitigating harm to coral communities and associated reef fish populations.

Expansion of coastal development, along with wastewater discharge and fertilizers, can harm coral reefs and their fisheries through increases in sediment and nutrient runoff. Consequent reef degradation directly affects ecological resilience, food security, human well-being, and cultural practices in tropical island communities around the world.

The researchers focused on the ahupua‘a (land divisions) of Hāʻena on Kaua‘i and Ka‘ūpūlehu on Hawai‘i Island, at opposite ends of the main Hawaiian Islands, where native Hawaiian communities are taking action to manage their resources through a place-based management approach.

Read the full story at Big Island Now

NOAA: Scientists Monitor Coral Reef Ecosystems Throughout the Hawaiian Archipelago

April 22, 2019 — The following was published by NOAA Fisheries:

Our scientists and managers depend on research surveys to monitor the status and trends of the coral reef ecosystems across the Hawaiian Archipelago over time. Coral reefs around the globe, including Hawaiʻi, are threatened by climate change, disease, land-based sources of pollution, and unsustainable fishing practices.

During expeditions this spring and summer, teams of scientific divers from NOAA’s Pacific Reef Assessment and Monitoring Program will assess reef fish and corals in the context of changing environmental conditions. They will collect images of the ocean floor to create 3D models of the reefs. The abundance and distribution of reef fish and coral reef organisms are used to characterize the conditions and integrity of our coral reef ecosystems. Over time, we can see how they have changed—an important part of managing and conserving reef-associated life in the region.

This expedition marks the 20th anniversary of the Pacific Reef Assessment and Monitoring Program’s inception in 2000, and will be conducted using the NOAA Ships Oscar Elton Sette and Rainier. We will add our research this season to collections from baseline monitoring surveys across the Pacific and in Hawaiʻi in 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2010, 2013, and 2016.

Study Locations

The Sette will survey the main Hawaiian Islands: Kauaʻi, Niʻihau, Maui, Lānaʻi, Molokaʻi, Kahoʻolawe, Oʻahu, and the island of Hawaiʻi. The Rainier will survey portions of the Papahānaumokuākea Marine National Monument in the remote Northwestern Hawaiian Islands: French Frigate Shoals, Lisianski/Neva Shoals, Pearl, and Hermes Atoll, and Kure Atoll. At each site, the ships will deploy small boats to reach study areas, including locations along the leeward and windward exposures, near the channels between islands, and in forereefs, backreefs, and lagoons.

Of particular note, our researchers are fortunate to return to the protected island of Kahoʻolawe, where few people have access. Kahoʻolawe was once a bombing range for the U.S. Navy, and it is now an island reserve under the state of Hawaiʻi.

Following our initial visit in 2016, this expedition is the second time that our program will survey the reef systems of Kahoʻolawe. Those surveys found that the reefs in certain areas were in good condition, and roving predators such as jacks were abundant when compared with other sites around the main Hawaiian Islands.

Research Methods

As the threats to coral reefs and marine ecosystems grow, our researchers lean more heavily on digital imaging to increase our monitoring capabilities.

We create a mosaic (2D) and 3D model of an area using structure from motion, a photogrammetry technique (mapping using the distance between objects). It estimates 3D structures by aligning 100s to 1000s of overlapping images.

Combining seafloor images to create 3D models of large areas of reef tract is a process called “structure-from-motion” photogrammetry, which is a new effort for our program. During this mission, we will conduct structure-from-motion surveys across the archipelago to measure the density, surface area, partial mortality, and health of corals. Our team will conduct structure-from-motion surveys at fixed stations to assess the growth, mortality, and recruitment of individual coral colonies, which will provide valuable information on the resilience of coral reefs to local and global threats.

Scientists aboard the Sette and Rainier will measure water temperature, salinity, carbonate chemistry, and other physical characteristics of the coral reef environment with an assortment of oceanographic monitoring instruments. Researchers will assess the potential early effects of ocean acidification on coral reef growth with calcification accretion units and bioerosion monitoring units.

This story was originally posted by NOAA Fisheries