Dataset: Ecological monitoring Natividad 2006-2021: UPC

Name: Uniform point contact (UPC) transect data from Isla Natividad from 2006 to 2021
Published: 2023-08-30
Keywords: ecological monitoring, Baja California Sur, benthic cover, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.907373.1

Spatial Extent: N:27.8952 E:-115.084 S:27.505 W:-115.205

Temporal Extent: 2006-08-17 - 2021-09-24

Project:

Collaborative Research: Evaluating how abalone populations in the California Current are structured by the interplay of large-scale oceanographic forcing and nearshore variability (Abalone Safe Places)

Principal Investigator:

Fiorenza Micheli (Stanford University)

Co-Principal Investigator:

Clifton Brock Woodson (University of Georgia, UGA)

Scientist:

Arturo Hernández-Velasco (Comunidad y Biodiversidad, A.C., COBI)

Carolina Olguín Jacobson (Stanford University)

Jorge Torre (Comunidad y Biodiversidad, A.C., COBI)

Technician:

Alfonso Romero (Comunidad y Biodiversidad, A.C., COBI)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2023-08-30

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Uniform point contact (UPC) transect data from Isla Natividad from 2006 to 2021

Abstract:

This dataset encompasses information about Uniform point contact (UPC) transects between 2006 to 2021 in Isla Natividad. UPC refers to the information about the substrate where the transect is laid. Every meter (along the 30m transect) you identify what type of substrate there is (e.g., sand, cobble, boulder, reef, other such as anthropogenic), what type of cover there is (e.g., none, brown algae, green algae, red algae, crustose coralline algae, mobile invertebrates, sessile invertebrates or seagrass) and the height of the relief (e.g., less than 10cm, between 10cm and 1m, between 1m and 2m or more than 2m). With this information you can assess the kelp forest ecosystem. This dataset also has information about the dates when the transects were done, site, the name of the diver, the depth the transect was laid, if the site was a marine reserve or not, if the site is inside a marine protected area or not, the latitude and longitude of the sites, the temperature of the water, the number of transect from where the information was counted and the total of substrate, cover and relief points. Ecological monitoring is important to collect data of species that inhabit an specific ecosystem. For this data set, we present all the data form 2006 to 2021 on algae, marine invertebrates, fish and uniform point contact at six different sites in Isla Natividad off the coast of Baja California Sur, Mexico. Data was collected once a year by trained divers as a collaborative effort from Stanford University, non-governmental organizations, and fishing cooperative federations. These data provides the abundaces of algae, invertebrates, fish and substrate of Isla Natividad over the spam of 15 years and may be use to assess changes in the ecosystems after shocks such as hypoxic events or marine heatwaves.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2023-08-30	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.907373.1	2023-11-16

Methods & Sampling

Ecological monitoring was conducted once a year from 2006-2021 at six different sites in Isla Natividad, Baja California Sur, Mexico. Using SCUBA, trained divers laid 30 x 2 meters belt transects to collect in situ algae, marine invertebrates, fish and uniform point contact (UPC) found along the transect. For algae, divers counted each algae and counted the number of stipes in the organism.

For data access and methodology details for marine invertebrates, fish, and uniform point contact (UPC) data, see the "Related Datasets" section. These four datasets related to each other in the way that the information from algae, invertebrates, fish and UPC was taken from the same site, on the same date, done by the same person.

These four related datasets were collected following the same methodology. Each year from 2006 to 2021, certified divers will lay several 30m transects along kelp forest in different sites in Isla Natividad, Baja California Sur, Mexico. Along the transects, the divers will collect information of algae, invertebrates, fish and UPC (Uniform Point Contact). Each transect was done in one single dive, collecting all the information already mentioned. At the end of the collecting season, the data was checked and transferred to the main dataset.

Instruments:
SCUBA equipment
30m transects
Diving slates

Data Processing Description

All the data collected during the ecological monitoring was then transferred to excel files, where it was double checked for typos and errors. Every year since 2006, the data has been collected in one excel file.

BCO-DMO Processing

* File "COBI_Mexico_UPC_IslaNatividad_2006-2021_EnglishVersion.csv" imported into the BCO-DMO data system with missing data identifiers "NA" and "ND."
** Missing data values are displayed differently based on the file format you download. They are blank in csv files, "NaN" in MatLab files, etc.
* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number
* ISO_DateTime_UTC_Start column added in ISO 8601 format for UTC time zone using the supplied year, month, day, START_TIME (using "Mexico/BajaSur" UTC-7:00/-6:00). Time zone confirmed by submitter.

Data Files

File
Ecological monitoring of UPC on Isla Natividad from 2006 to 2021 filename: 907373_v1_isla_natividad_upc.csv (Comma Separated Values (.csv), 397.11 KB) MD5:001c173e9683d3ab77e7085695f67943 Primary data file for dataset ID 907373, version 1

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1736830

Deployments

None available yet

Instruments

None available yet

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
ID	identification number	unitless	individual
DAY	day when monitoring was conducted	unitless	day
MONTH	month when monitoring was conducted	unitless	month
YEAR	year when monitoring was conducted	unitless	year
STATE	State in Mexico: Baja California Sur	unitless	site_descrip
COMMUNITY	The community were the monitoring was done	unitless	site_descrip
SITE	The specific sites were monitoring was done	unitless	site
LAT	latitute	decimal degrees	lat
LONG	longitude	decimal degrees	lon
HABITAT	type of ecosystem where monitoring was conducted	unitless	site_descrip
ZONE	If it was a marine reserve or not: Control (not reserve), Reserve (marine reserve)	unitless	site_descrip
PROTECTION	If the site had any type of protection: none, community reserve, fishing refuge zone	unitless	site_descrip
MPA	If there is any type of marine protected area on a national level	unitless	site_descrip
DIVER	The person that did the monitoring	unitless	person
START_TIME	initial time of monitoring (HH:MM or HH) in Pacific Time Zone (UTC-8/-7)	unitless	time_local
FINAL_TIME	final time of monitoring (HH:MM or HH) in Pacific Time Zone (UTC-8/-7)	unitless	time_local
ISO_DateTime_UTC_Start	initial timestamp of monitoring in UTC time zone (ISO 8601 format) Format: %Y-%m-%dT%H:%MZ	unitless	ISO_DateTime_UTC
START_DEPTH	initial depth	meters (m)	depth
FINAL_DEPTH	final depth	meters (m)	depth
TEMPERATURE	water temperature	degrees Celcius	temp
VISIBILITY	visibility description	meters (m)	site_descrip
CURRENT	current descritpion	unitless	site_descrip
TRANSECT	the number of transect of the monitoring	meters (m)	transect
SubstrateSand	Count of points along transect with substrate "sand" = anything less than 0.5 cm (except anthropogenic substrate). See TotalSubstrate for total number of substrate points measured in this transect.	unitless	count
SubstrateGravel	Count of points along transect with substrate "gravel" = anything from 0.5cm to 15 cm (except anthropogenic substrate). See TotalSubstrate for total number of substrate points measured in this transect.	unitless	count
SubstrateBoulder	Count of points along transect with substrate "boulder" = anything from 15cm to 1 m (except anthropogenic substrate). See TotalSubstrate for total number of substrate points measured in this transect.	unitless	count
SubstrateReef	Count of points along transect with substrate "reef" = anything bigger than 1 m (except anthropogenic substrate). See TotalSubstrate for total number of substrate points measured in this transect.	unitless	count
SubstrateOther	Count of points along transect with substrate "other" = anything anthropogenic regardless of the size. See TotalSubstrate for total number of substrate points measured in this transect.	unitless	count
Rugosity_0	Count of points along transect with rugosity between 0 to 10cm. This is a metric of vertical variation. See TotalRugosity for total number of rugosity points measured in this transect.	unitless	count
Rugosity_1	Count of points along transect with rugosity between 10 to 1m. This is a metric of vertical variation. See TotalRugosity for total number of rugosity points measured in this transect.	unitless	count
Rugosity_2	Count of points along transect with rugosity between 1 to 2m. This is a metric of vertical variation. See TotalRugosity for total number of rugosity points measured in this transect.	unitless	count
Rugosity_3	Count of points along transect with rugosity greater than 2m. This is a metric of vertical variation. See TotalRugosity for total number of rugosity points measured in this transect.	unitless	count
CoverNone	Count of points along transect with "none" = nothing. Describes the absense of organisms living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverBrownAlgae	Count of points along transect with "brown algae" = brown algae but not kelps, boa feather for example.	unitless	count
CoverOtherBrownAlgae	Count of points along transect with "other brown algae" = invasive species such as sargasum. Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverKelp	Count of points along transect with "kelp" = brown algae such as giant kelp, bull kelp. Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverRedAlgae	Count of points along transect with "red algae." Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverCorallineArticulate	Count of points along transect with "coralline articulate." Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverCrustoseCoralline	Count of points along transect with "crustose coralline" = crustose coralline algae . Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverSessilInvertebrate	Count of points along transect with "sessil invertebrate" = anemone, bryozoan, coral, gorgonians. Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverMobileInvertebrate	Count of points along transect with "mobile invertebrates" = sea urchins, sea stars, sea cucumber, snails. Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverGreenAlgae	Count of points along transect with "green algae ." Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverCrustoseRed	Count of points along transect with "crustose red algae. " Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
CoverSeagrass	Count of points along transect with "seagrass or eelgrass ." Describes the type of organism living at that point. See TotalCover for total number of cover points measured in this transect.	unitless	count
TotalSubstrate	total sum of all the points of substrate along the transect (maximum of 30 but may be less depending how many points were taken during transect)	unitless	count
TotalRugosity	total sum of all the points of rugosity along the transect (maximum of 30 but may be less depending how many points were taken during transect)	unitless	count
TotalCover	total sum of all the points of cover along the transect (maximum of 30 but may be less depending how many points were taken during transect)	unitless	count