CRED REA Reef Fish Assessment Survey at Guam Island, Marianas Archipelago in 2009
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator:
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Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Publication_Date: 20090415
- Title:
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CRED REA Reef Fish Assessment Survey at Guam Island, Marianas Archipelago in 2009
- Geospatial_Data_Presentation_Form: spreadsheet
- Online_Linkage:
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https://www.fisheries.noaa.gov/pacific-islands/ecosystems/coral-reefs-pacific
- Description:
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- Abstract:
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To support a long-term NOAA Coral Reef Conservation Program (CRCP) for sustainable management and conservation of coral reef ecosystems, from 5 April - 14 April 2009, reef fish assessment surveys were conducted, as a part of Rapid Ecological Assessments (REA), during the Pacific Reef Assessment and Monitoring Program (RAMP) Cruise HI0902 in the Marianas Archipelago at biennial intervals by the Coral Reef Ecosystem Division (CRED) at the NOAA Pacific Islands Fisheries Science Center (PIFSC). During the cruise, 25 REA sites were surveyed at Guam Island in the Marianas Archipelago.
At the specific REA sites, fish biologists along with coral biologists, algal biologists and marine invertebrate zoologist entered the water and conducted a fine-scale (~300 m2) and high degree of taxonomic resolution REA survey to assess and monitor species composition, abundance, percent cover, size distribution, diversity, and general health of fish, corals, macro-invertebrates, and algae in shallow-water (< 35 m) habitats.
Reef fish assessment surveys were focused on cataloging the diversity (species richness), abundance (numeric density [# fish 100 m-2] and biomass density [kg 100 m-2]) of diurnally active reef fish assemblages. Three complementary noninvasive underwater survey methods were used, including belt-transect, stationary point count, and roving-diver surveys. For all methods, fish were identified at the species level, when possible, and assigned to a size bin ranging from 1 to 200 cm based on a visual estimate of total fish length.
Belt-transect (BLT) surveys were used to quantify the entire diurnal fish community (all size classes). In belt-transect surveys, two fish biologists swam side-by-side along three consecutively-placed, 25m transect lines. The BLT team swam each transect two times. During the initial swim-out, each fish diver recorded all fish larger than 20 cm observed within a 4-m wide belt perpendicular to their respective side of the transect (200 m2 area per line, 100 m2 per diver). On the return swim, each fish diver recorded all fish less than 20 cm observed within a 2-m wide belt (100 m2 area per line, 50 m2 per diver). The survey of large fish took approximately 5 min to complete while the survey of smaller fish took about 10 min to complete. All reef-associated fish, including those in the water column (including planktivores), were counted. Any coastal pelagic species (e.g., clupeids [sardines], belonids [beakfish], antherinids [silversides]) seen near the surface were not recorded.
The stationary point count (SPC) method were used to quantify larger, more mobile reef fish species that can be missed on belt-transect surveys. In stationary point count survey, a fish biologist swam approximately 15 m away from a transect line concurrently being surveyed by the other two BLT fish biologists. The SPC biologist then recorded all fish greater than 25 cm in length that passed within a visually estimated 20-m diameter cylinder centered on the diver's fixed position (10-m radius, total area = 314 m2). The survey time for each stationary point count survey was 5 min and a total of four stationary point count surveys were conducted at each REA site.
Roving-diver surveys were followed belt-transect and stationary point count surveys. As diver bottom time permitted, the fish assessment team conducted random swim surveys throughout the REA site area, recording, to the species level or the lowest recognizable taxon, the presence of reef fish not encountered during previous methods.
- Purpose:
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Part of a long-term monitoring program at biennial intervals which documents the state of the reefs.
- Supplemental_Information:
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Maximum depth was 27 meters.
Fish species observed:
Year Region Island Species TaxonName
2009 MARIAN Guam ABVA Abudefduf vaigiensis
2009 MARIAN Guam ACBL Acanthurus blochii
2009 MARIAN Guam ACDU Acanthurus dussumieri
2009 MARIAN Guam ACGU Acanthurus guttatus
2009 MARIAN Guam ACLI Acanthurus lineatus
2009 MARIAN Guam ACNC Acanthurus nigricans
2009 MARIAN Guam ACNF Acanthurus nigrofuscus
2009 MARIAN Guam ACNR Acanthurus nigroris
2009 MARIAN Guam ACOL Acanthurus olivaceus
2009 MARIAN Guam ACPY Acanthurus pyroferus
2009 MARIAN Guam ACTR Acanthurus triostegus
2009 MARIAN Guam AMCU Amblyglyphidodon curacao
2009 MARIAN Guam AMCH Amphiprion chrysopterus
2009 MARIAN Guam ANCA Anampses caeruleopunctatus
2009 MARIAN Guam ANTW Anampses twistii
2009 MARIAN Guam APFU Aphareus furca
2009 MARIAN Guam APSP Apogon sp
2009 MARIAN Guam APTR Apolemichthys trimaculatus
2009 MARIAN Guam APVI Aprion virescens
2009 MARIAN Guam ARHI Arothron hispidus
2009 MARIAN Guam ARME Arothron meleagris
2009 MARIAN Guam ASTA Aspidontus taeniatus
2009 MARIAN Guam AUCH Aulostomus chinensis
2009 MARIAN Guam BAUN Balistapus undulatus
2009 MARIAN Guam BACO Balistoides conspicillum
2009 MARIAN Guam BAVI Balistoides viridescens
2009 MARIAN Guam BLCH Blenniella chrysospilos
2009 MARIAN Guam BLEN Blenniidae sp
2009 MARIAN Guam BOAX Bodianus axillaris
2009 MARIAN Guam CACA Calotomus carolinus
2009 MARIAN Guam CAPA Cantherhines pardalis
2009 MARIAN Guam CAAM Canthigaster amboinensis
2009 MARIAN Guam CASO Canthigaster solandri
2009 MARIAN Guam CAVA Canthigaster valentini
2009 MARIAN Guam CAME Caranx melampygus
2009 MARIAN Guam CEFL Centropyge flavissima
2009 MARIAN Guam CEHE Centropyge heraldi
2009 MARIAN Guam CESH Centropyge shepardi
2009 MARIAN Guam CEAR Cephalopholis argus
2009 MARIAN Guam CEUR Cephalopholis urodeta
2009 MARIAN Guam CEOC Cetoscarus ocellatus
2009 MARIAN Guam CHAU Chaetodon auriga
2009 MARIAN Guam CHBE Chaetodon bennetti
2009 MARIAN Guam CHCI Chaetodon citrinellus
2009 MARIAN Guam CHEP Chaetodon ephippium
2009 MARIAN Guam CHKL Chaetodon kleinii
2009 MARIAN Guam CHLI Chaetodon lineolatus
2009 MARIAN Guam CHLU Chaetodon lunula
2009 MARIAN Guam CHLT Chaetodon lunulatus
2009 MARIAN Guam CHML Chaetodon melannotus
2009 MARIAN Guam CHMR Chaetodon mertensii
2009 MARIAN Guam CHME Chaetodon meyeri
2009 MARIAN Guam CHOR Chaetodon ornatissimus
2009 MARIAN Guam CHPU Chaetodon punctatofasciatus
2009 MARIAN Guam CHQU Chaetodon quadrimaculatus
2009 MARIAN Guam CHRE Chaetodon reticulatus
2009 MARIAN Guam CHTR Chaetodon trifascialis
2009 MARIAN Guam CHUL Chaetodon ulietensis
2009 MARIAN Guam CHCH Chanos chanos
2009 MARIAN Guam CHFA Cheilinus fasciatus
2009 MARIAN Guam CHOX Cheilinus oxycephalus
2009 MARIAN Guam CHTL Cheilinus trilobatus
2009 MARIAN Guam CHUD Cheilinus undulatus
2009 MARIAN Guam CHIN Cheilio inermis
2009 MARIAN Guam GRTU Chelonia mydas
2009 MARIAN Guam CHSO Chlorurus sordidus
2009 MARIAN Guam CHAC Chromis acares
2009 MARIAN Guam CHAG Chromis agilis
2009 MARIAN Guam CHMA Chromis margaritifer
2009 MARIAN Guam CHVA Chromis vanderbilti
2009 MARIAN Guam CHXA Chromis xanthura
2009 MARIAN Guam CHBR Chrysiptera brownriggii
2009 MARIAN Guam CHTY Chrysiptera traceyi
2009 MARIAN Guam CIKA Cirrhilabrus katherinae
2009 MARIAN Guam CIFL Cirrhitichthys falco
2009 MARIAN Guam CIPI Cirrhitus pinnulatus
2009 MARIAN Guam CIVR Cirripectes variolosus
2009 MARIAN Guam COAY Coris aygula
2009 MARIAN Guam COGA Coris gaimard
2009 MARIAN Guam CTBI Ctenochaetus binotatus
2009 MARIAN Guam CTCY Ctenochaetus cyanocheilus
2009 MARIAN Guam CTHA Ctenochaetus hawaiiensis
2009 MARIAN Guam CTSR Ctenochaetus striatus
2009 MARIAN Guam DARE Dascyllus reticulatus
2009 MARIAN Guam DATR Dascyllus trimaculatus
2009 MARIAN Guam ECBC Ecsenius bicolor
2009 MARIAN Guam EPIN Epibulus insidiator
2009 MARIAN Guam EPFA Epinephelus fasciatus
2009 MARIAN Guam EPME Epinephelus merra
2009 MARIAN Guam EXBR Exallias brevis
2009 MARIAN Guam FOFL Forcipiger flavissimus
2009 MARIAN Guam FOLO Forcipiger longirostris
2009 MARIAN Guam GNAU Gnathodentex aureolineatus
2009 MARIAN Guam GOCI Gobiodon citrinus
2009 MARIAN Guam GOVA Gomphosus varius
2009 MARIAN Guam GYJA Gymnothorax javanicus
2009 MARIAN Guam GYUN Gymnothorax undulatus
2009 MARIAN Guam HABI Halichoeres biocellatus
2009 MARIAN Guam HAHO Halichoeres hortulanus
2009 MARIAN Guam HAMT Halichoeres margaritaceus
2009 MARIAN Guam HAMA Halichoeres marginatus
2009 MARIAN Guam HAOR Halichoeres ornatissimus
2009 MARIAN Guam HASP Halichoeres sp
2009 MARIAN Guam HATR Halichoeres trimaculatus
2009 MARIAN Guam HEFA Hemigymnus fasciatus
2009 MARIAN Guam HEME Hemigymnus melapterus
2009 MARIAN Guam HEPO Hemitaurichthys polylepis
2009 MARIAN Guam HECH Heniochus chrysostomus
2009 MARIAN Guam HEMO Heniochus monoceros
2009 MARIAN Guam HILO Hipposcarus longiceps
2009 MARIAN Guam SOLD Holocentridae sp
2009 MARIAN Guam HODO Hologymnosus doliatus
2009 MARIAN Guam ISSP Istigobius sp
2009 MARIAN Guam WRAS Labridae sp
2009 MARIAN Guam LADI Labroides dimidiatus
2009 MARIAN Guam LAXA Labropsis xanthonota
2009 MARIAN Guam LETA Lepidozygus tapeinosoma
2009 MARIAN Guam LEHA Lethrinus harak
2009 MARIAN Guam LEXA Lethrinus xanthochilus
2009 MARIAN Guam LUBO Lutjanus bohar
2009 MARIAN Guam LUFU Lutjanus fulvus
2009 MARIAN Guam LUGI Lutjanus gibbus
2009 MARIAN Guam LUMO Lutjanus monostigma
2009 MARIAN Guam MAMA Macolor macularis
2009 MARIAN Guam MANI Macolor niger
2009 MARIAN Guam MAME Macropharyngodon meleagris
2009 MARIAN Guam MABR Malacanthus brevirostris
2009 MARIAN Guam MEAT Meiacanthus atrodorsalis
2009 MARIAN Guam MEVI Melichthys vidua
2009 MARIAN Guam FILE Monacanthidae sp
2009 MARIAN Guam MOGR Monotaxis grandoculis
2009 MARIAN Guam MUFL Mulloidichthys flavolineatus
2009 MARIAN Guam MUVA Mulloidichthys vanicolensis
2009 MARIAN Guam MYBE Myripristis berndti
2009 MARIAN Guam MYKU Myripristis kuntee
2009 MARIAN Guam NAHE Naso hexacanthus
2009 MARIAN Guam NALI Naso lituratus
2009 MARIAN Guam NATO Naso tonganus
2009 MARIAN Guam NAUN Naso unicornis
2009 MARIAN Guam NAVL Naso vlamingii
2009 MARIAN Guam NEMA Nemateleotris magnifica
2009 MARIAN Guam NEAR Neocirrhites armatus
2009 MARIAN Guam NESA Neoniphon sammara
2009 MARIAN Guam NOTA Novaculichthys taeniourus
2009 MARIAN Guam ODNI Odonus niger
2009 MARIAN Guam OSME Ostracion meleagris
2009 MARIAN Guam OXBI Oxycheilinus bimaculatus
2009 MARIAN Guam OXDI Oxycheilinus digramma
2009 MARIAN Guam OXUN Oxycheilinus unifasciatus
2009 MARIAN Guam PAAR Paracirrhites arcatus
2009 MARIAN Guam PAFO Paracirrhites forsteri
2009 MARIAN Guam PAHE Paracirrhites hemistictus
2009 MARIAN Guam PACL Parapercis clathrata
2009 MARIAN Guam PAMI Parapercis millepunctata
2009 MARIAN Guam PABA Parupeneus barberinus
2009 MARIAN Guam PACY Parupeneus cyclostomus
2009 MARIAN Guam PAIN Parupeneus insularis
2009 MARIAN Guam PAMU Parupeneus multifasciatus
2009 MARIAN Guam PAPL Parupeneus pleurostigma
2009 MARIAN Guam PEOU Pempheris oualensis
2009 MARIAN Guam PECA Pentapodus caninus
2009 MARIAN Guam SAND Pinguipedidae sp
2009 MARIAN Guam PLTA Plagiotremus tapeinosoma
2009 MARIAN Guam PLDI Plectroglyphidodon dickii
2009 MARIAN Guam PLJO Plectroglyphidodon johnstonianus
2009 MARIAN Guam PLLA Plectroglyphidodon lacrymatus
2009 MARIAN Guam PLAL Plectropomus areolatus
2009 MARIAN Guam PLLV Plectropomus laevis
2009 MARIAN Guam POIM Pomacanthus imperator
2009 MARIAN Guam POVA Pomacentrus vaiuli
2009 MARIAN Guam POGU Pomachromis guamensis
2009 MARIAN Guam PSEV Pseudocheilinus evanidus
2009 MARIAN Guam PSHE Pseudocheilinus hexataenia
2009 MARIAN Guam PSOC Pseudocheilinus octotaenia
2009 MARIAN Guam PSTE Pseudocheilinus tetrataenia
2009 MARIAN Guam PSAT Pseudojuloides atavai
2009 MARIAN Guam PTEN Pteragogus enneacanthus
2009 MARIAN Guam PTEV Ptereleotris evides
2009 MARIAN Guam PTZE Ptereleotris zebra
2009 MARIAN Guam PTMA Pterocaesio marri
2009 MARIAN Guam PTTI Pterocaesio tile
2009 MARIAN Guam PYDI Pygoplites diacanthus
2009 MARIAN Guam RHRE Rhinecanthus rectangulus
2009 MARIAN Guam SACA Sargocentron caudimaculatum
2009 MARIAN Guam SAMI Sargocentron microstoma
2009 MARIAN Guam SASP Sargocentron spiniferum
2009 MARIAN Guam PARR Scaridae sp
2009 MARIAN Guam SCAL Scarus altipinnis
2009 MARIAN Guam SCDM Scarus dimidiatus
2009 MARIAN Guam SCFO Scarus forsteni
2009 MARIAN Guam SCGH Scarus ghobban
2009 MARIAN Guam SCNI Scarus niger
2009 MARIAN Guam SCOV Scarus oviceps
2009 MARIAN Guam SCPS Scarus psittacus
2009 MARIAN Guam SCRU Scarus rubroviolaceus
2009 MARIAN Guam SCSC Scarus schlegeli
2009 MARIAN Guam SCSP Scarus sp
2009 MARIAN Guam SCLI Scolopsis lineata
2009 MARIAN Guam SIAR Siganus argenteus
2009 MARIAN Guam SPQE Sphyraena qenie
2009 MARIAN Guam STAL Stegastes albifasciatus
2009 MARIAN Guam STFA Stegastes fasciolatus
2009 MARIAN Guam STNI Stegastes nigricans
2009 MARIAN Guam STBN Stethojulis bandanensis
2009 MARIAN Guam STST Stethojulis strigiventer
2009 MARIAN Guam SUBU Sufflamen bursa
2009 MARIAN Guam SUCH Sufflamen chrysopterum
2009 MARIAN Guam LIZA Synodontidae sp
2009 MARIAN Guam THAM Thalassoma amblycephalum
2009 MARIAN Guam THHA Thalassoma hardwicke
2009 MARIAN Guam THLU Thalassoma lutescens
2009 MARIAN Guam THQU Thalassoma quinquevittatum
2009 MARIAN Guam VAST Valenciennea strigata
2009 MARIAN Guam VALO Variola louti
2009 MARIAN Guam ZACO Zanclus cornutus
2009 MARIAN Guam ZEFL Zebrasoma flavescens
2009 MARIAN Guam ZEVE Zebrasoma veliferum
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20090405
- Ending_Date: 20090408
- Currentness_Reference: Ground condition
- Status:
-
- Progress: In Work
- Maintenance_and_Update_Frequency: asNeeded
- Spatial_Domain:
-
- Bounding_Coordinates:
-
- West_Bounding_Coordinate: 144.613486
- East_Bounding_Coordinate: 144.981368
- North_Bounding_Coordinate: 13.669638
- South_Bounding_Coordinate: 13.217378
- Keywords:
-
- Theme:
-
- Theme_Keyword_Thesaurus: NCEI Geoportal Filter
- Theme_Keyword: CoRIS_Metadata
- Theme:
-
- Theme_Keyword_Thesaurus: CRCP Project
- Theme_Keyword:
-
Pacific Reef Assessment and Monitoring Program (Pacific RAMP): Biennial monitoring for the U.S. Pacific Islands and Atolls
- Theme_Keyword: 1221
- Theme:
-
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Marine Ecosystem
- Theme_Keyword: Reef Assessment and Monitoring Program (RAMP)
- Theme_Keyword: Rapid Ecological Assessments (REA)
- Theme_Keyword: Coral Reef
- Theme_Keyword: Reef Fishes
- Theme_Keyword: Belt Transect (BLT) Survey
- Theme_Keyword: Stationary Point Count (SPC )Surveys
- Theme_Keyword: Roving-diver surveys
- Theme_Keyword: Marianas Archipelago
- Theme_Keyword: Guam Island
- Theme_Keyword: HI0902
- Theme:
-
- Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
- Theme_Keyword: Numeric Data Sets > Biology
- Theme:
-
- Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
- Theme_Keyword: EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
- Theme_Keyword:
-
EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral reef ecology
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Rapid assessment studies
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census > Stationary
- Theme_Keyword:
-
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census > Random swimming
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census > Belt transect
- Theme:
-
- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: biota
- Theme_Keyword: 002
- Place:
-
- Place_Keyword_Thesaurus: None
- Place_Keyword: Marianas Archipelago
- Place_Keyword: Guam Island
- Place:
-
- Place_Keyword_Thesaurus: CoRIS Place Thesaurus
- Place_Keyword:
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OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)
- Place_Keyword:
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COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)
- Place:
-
- Place_Keyword_Thesaurus: CoRIS Region
- Place_Keyword: Guam
- Access_Constraints: Data are available two years following data collection date.
- Use_Constraints:
-
Please cite CRED when using the data. Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration
- Point_of_Contact:
-
- Contact_Information:
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- Contact_Organization_Primary:
-
- Contact_Organization:
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Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Contact_Person: Ivor Williams
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: NOAA IRC
- Address: NMFS/PIFSC/CRED
- Address: 1845 WASP Blvd., Building 176
- City: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Facsimile_Telephone: 808 725-5429
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Contact_Instructions: e-mail preferred
- Data_Set_Credit:
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"Robert Schroeder, Marc Nadon, Paula Ayotte, Valerie Brown", Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Sciences Center, National Marine Fisheries Service, NOAA
- Security_Information:
-
- Security_Classification_System: Not applicable
- Security_Classification: Unclassified
- Security_Handling_Description: Not applicable
- Native_Data_Set_Environment: Oracle
- Data_Quality_Information:
-
- Attribute_Accuracy:
-
- Attribute_Accuracy_Report:
-
Observations at each site were made by three divers who are experts in fish taxonomy. The team of three REA fish divers rotated roles with two divers performing belt-transect surveys and one diver performing stationary point counts at each survey site. Observations were periodically checked during the expedition for consistency between divers, and little discrepancy was ever noted between divers. It should be noted, however, that this data set is quite large, and probably includes typographical or other errors that might be discovered at a future date.
- Logical_Consistency_Report:
-
The same methods of data collection were used at each of the sites surveyed at this location, and were conducted by the same scientists. Periodic examination of the data through the duration of the trip showed no signs of diver bias or other discrepancies.
- Completeness_Report:
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The survey sites were selected to be representative of the coral reef habitats at this reef system. Efforts were made to include broad spatial coverage of the reef area, but weather conditions or other environmental constraints may have precluded the team from surveying windward or exposed sites.
- Positional_Accuracy:
-
- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report: GPS unit
- Quantitative_Horizontal_Positional_Accuracy_Assessment:
-
- Horizontal_Positional_Accuracy_Value: 1
- Horizontal_Positional_Accuracy_Explanation: Instrument parameters
- Vertical_Positional_Accuracy:
-
- Vertical_Positional_Accuracy_Report: Dive computer and SCUBA depth gauge
- Quantitative_Vertical_Positional_Accuracy_Assessment:
-
- Vertical_Positional_Accuracy_Value: 0.3
- Vertical_Positional_Accuracy_Explanation: Instrument parameters
- Lineage:
-
- Process_Step:
-
- Process_Description:
-
REA surveys are investigations that provide a high degree of taxonomic resolution for coral, algae, other macroinvertebrate, and reef fish communities. The surveys were conducted using a combination of dive teams which generally included a two to three person fish team, a two person coral/coral disease team, and a combined team of two algae biologists and one macroinvertebrate biologist. The majority of REA surveys were conducted along the forereef slopes of individual islands at depths between 10 and 20 m. However, additional surveyed habitats included a lagoonal-type patch reef and offshore oceanic banks.
During REA surveys, biological assessment teams follow highly structured protocols that are repeated at each REA site. Upon arrival at an REA site, three teams of divers enter the water over spaced time intervals. The fish team firstly enters the water and deploys a 25-m transect line. Two of the fish divers begin to survey along that transect while the remaining fish diver begins stationary point count assessments in the general vicinity. After approximately 20 min, the coral team enters the water and begins to work along the first transect line. By this time the fish team has deployed and begun surveys along a second 25-m transect. About 10 min later, the algal/invertebrate team enters the water and begins surveying the first transect. In total, the fish team surveys three transects at each site (transects 1, 2, and 3), and the coral and algal/invertebrate teams survey transects 1 and 2. The sampling effort takes between 60 and 80 min to complete.
The selection of REA sites was made in close consultation with Coral Reef Advisory Group (CRAG) and local agencies. Factors considered during REA site selection included: (1) ensuring a range of sample sites representative of the benthic and reef fish habitats around each island; (2) selecting a mixture of sites within and outside of marine protected areas; (3) selecting a mixture of both 'impacted' and 'least impacted' sites; (4) selecting some sites adjacent to local villages, and (5) selecting a number of sites that could be compared to and complement previous assessment and monitoring work as well as future coral reef monitoring proposed by CRAG and local agencies. It is important to note that access to REA sites can be limited by wave exposure, weather conditions, and other environmental factors such as currents, which can affect the ability to resurvey sites between years.
Transect placement was guided by: (1) a focus on hard-bottom communities; (2) deploying lines along an isobath to the extent possible at each site, and (3) laying the transect lines into the prevailing current.
- Process_Date: Unknown
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Geographic:
-
- Latitude_Resolution: 0.0001
- Longitude_Resolution: 0.0001
- Geographic_Coordinate_Units: Decimal Degrees
- Geodetic_Model:
-
- Horizontal_Datum_Name: World Geodetic System 1984 (WGS84)
- Ellipsoid_Name: Geodetic Reference System 80 (GRS80)
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.2572236
- Vertical_Coordinate_System_Definition:
-
- Depth_System_Definition:
-
- Depth_Datum_Name: Local surface
- Depth_Resolution: 1
- Depth_Distance_Units: meters
- Depth_Encoding_Method: Explicit Depth Coordinate Included with Horizontal Coordinates
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization:
-
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Contact_Person: CRED Data Management Team
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: NOAA IRC
- Address: NMFS/PIFSC/CRED
- Address: 1845 WASP Blvd., Building 176
- City: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Facsimile_Telephone: 808 725-5429
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Contact_Instructions: e-mail preferred
- Resource_Description: Offline Data
- Distribution_Liability:
-
While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
- Standard_Order_Process:
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- Digital_Form:
-
- Digital_Transfer_Information:
-
- Format_Name: XLS (Microsoft Excel worksheet)
- Digital_Transfer_Option:
-
- Offline_Option:
-
- Offline_Media: CDROM, or email
- Recording_Format: ISO 9660
- Fees: None if receiving the data online
- Custom_Order_Process: Contact CRED data management team for information
- Technical_Prerequisites: Contact CRED data management team for information
- Metadata_Reference_Information:
-
- Metadata_Date: 20190526
- Metadata_Review_Date: 20090914
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization:
-
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: NOAA IRC
- Address: NMFS/PIFSC/CRED
- Address: 1845 WASP Blvd., Building 176
- City: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Facsimile_Telephone: 808 725-5429
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Contact_Instructions: e-mail preferred
- Metadata_Standard_Name: the Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- CoRIS:
-
- CoRIS_ID: 20090914034822
- CoRIS_Children: None
- CoRIS_Beginning_Date: 20090405
- CoRIS_Ending_Date: 20090408
- CoRIS_Metadata_Link:
-
https://www.coris.noaa.gov/metadata/records/html/cred_rea_fish_guam_island_2009.html
- CoRIS_Tracking_ID: 2899
Generated by mp version 2.9.48 on Wed Apr 17 11:07:04 2024