Skip to main content
U.S. flag

An official website of the United States government

Intertidal Mussel, Bivalve, Sea Star and Temperature Logger Data from Sitka National Historical Park 2023-2026 — Data Package

Published by National Park Service | Department of the Interior | Catalog Last Checked: October 15, 2026 at 11:18 PM | Dataset Last Updated: October 07, 2026 at 12:00 AM
MUSSELS ABSTRACT AND PURPOSE STATEMENT These data are part of the Southeast Alaska Inventory and Monitoring Network (SEAN) and Southwest Alaska Inventory and Monitoring Network (SWAN) long-term monitoring program and describe mussel sampling and observations conducted in Southeast Alaska. This dataset consists of six comma separated files (.csv): 1) mussel sampling site layout information, 2) mussel counts for mussels greater than 20 millimeters in a quadrat, 3) mussel size measurements for mussels greater than 20 millimeters in a quadrat, 4) mussel counts for all mussels collected from core samples, 5) mussel size frequencies for all mussels collected from core samples, and 6) list of SEAN and SWAN principal investigators and collaborators. The purpose of this long-term project is to assess change in the density and size distribution of mussels (Mytilus trossulus) in mussel beds. This data also are used as an indicator of mussel prey availability for various predators, including Sea Otters, Black Oystercatchers, sea ducks and sea stars. Sampling was conducted within Sitka National Historical Park. BIVALVES ABSTRACT AND PURPOSE STATEMENT These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and describe bivalve count and size sampling and observations conducted at intertidal soft-sediment sampling sites in Sitka National Historic Park. The purpose of this long-term project is to assess change in intertidal bivalve communities on mixed sediment beaches. These data are also used to assess changes in abundance, size distribution, and growth rate of larger bivalve species. SEA STAR ABSTRACT AND PURPOSE STATEMENT These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has two comma separated values (.csv) file exported from a Microsoft Access relational database. The data consist of: 1) size and disease state of sea stars and 2) counts of sea stars. These data provide sizes, counts, density, and disease state of sea stars at sites in sheltered rocky habitats. These data are used to estimate density of healthy and diseased sea stars and sea star size frequency on sheltered rocky shorelines to assess change in intertidal invertebrate communities on rocky shorelines. INTERTIDAL TEMPERATURE ABSTRACT AND PURPOSE STATEMENT These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program. This dataset consists of date, time, and temperature measurements from intertidal rocky sampling sites, including predicted tide height at the time of the reading, which is used to distinguish air from water temperature readings. The data are provided as comma separated values (.csv) files derived from data downloaded from HOBO temperature loggers. The purpose of this dataset is to document intertidal water and air temperatures at intertidal study sites at Sitka National Historic Park.

Resources

14 resources available

  • SITK_2023-2026_Sea_Star_Count.csv

    CSV
    Download

  • SITK_2023-2026_Intertidal_metadata.xml

    XML
    Download

  • SITK_2023-2026_Sea_Star_Size_Disease.csv

    CSV
    Download

  • SITK_2023-2026_Intertidal_Temperature_Loggers.csv

    CSV
    Download

  • SITK_2023-2026_Mytilus_Core_Count.csv

    CSV
    Download

  • SITK_2023-2026_Mytilus_20mm_Count.csv

    CSV
    Download

  • SITK_2023-2026_Mytilus_Site_Info.csv

    CSV
    Download

  • SITK_2023-2026_Mytilus_Core_Size_Frequency.csv

    CSV
    Download

  • SITK_2023-2026_Mytilus_20mm_Size.csv

    CSV
    Download

  • SITK_2023-2026_Combined_Geographic_Info.csv

    CSV
    Download

  • SITK_2023-2026_Soft_Sediment_Bivalve_Count.csv

    CSV
    Download

  • SITK_2023-2026_Soft_Sediment_Bivalve_Size.csv

    CSV
    Download

  • SITK_2023-2026_Intertidal_Temperature.csv

    CSV
    Download

  • SITK_2023-2026_Soft_Sediment_Bivalve_Site_Info.csv

    CSV
    Download

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Air temperature Alaska Animals/invertebrates Aquatic biology Aquatic ecosystems Asteroidea Atmospheric/Ocean Indicators Benthic ecosystems

Complete Metadata
accessLevel public
bureauCode 
[
  "010:24"
]
contactPoint 
{
  "fn": "NPS IRMA Help",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:NRSS_DataStore@nps.gov"
}
description MUSSELS ABSTRACT AND PURPOSE STATEMENT These data are part of the Southeast Alaska Inventory and Monitoring Network (SEAN) and Southwest Alaska Inventory and Monitoring Network (SWAN) long-term monitoring program and describe mussel sampling and observations conducted in Southeast Alaska. This dataset consists of six comma separated files (.csv): 1) mussel sampling site layout information, 2) mussel counts for mussels greater than 20 millimeters in a quadrat, 3) mussel size measurements for mussels greater than 20 millimeters in a quadrat, 4) mussel counts for all mussels collected from core samples, 5) mussel size frequencies for all mussels collected from core samples, and 6) list of SEAN and SWAN principal investigators and collaborators. The purpose of this long-term project is to assess change in the density and size distribution of mussels (Mytilus trossulus) in mussel beds. This data also are used as an indicator of mussel prey availability for various predators, including Sea Otters, Black Oystercatchers, sea ducks and sea stars. Sampling was conducted within Sitka National Historical Park. BIVALVES ABSTRACT AND PURPOSE STATEMENT These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and describe bivalve count and size sampling and observations conducted at intertidal soft-sediment sampling sites in Sitka National Historic Park. The purpose of this long-term project is to assess change in intertidal bivalve communities on mixed sediment beaches. These data are also used to assess changes in abundance, size distribution, and growth rate of larger bivalve species. SEA STAR ABSTRACT AND PURPOSE STATEMENT These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has two comma separated values (.csv) file exported from a Microsoft Access relational database. The data consist of: 1) size and disease state of sea stars and 2) counts of sea stars. These data provide sizes, counts, density, and disease state of sea stars at sites in sheltered rocky habitats. These data are used to estimate density of healthy and diseased sea stars and sea star size frequency on sheltered rocky shorelines to assess change in intertidal invertebrate communities on rocky shorelines. INTERTIDAL TEMPERATURE ABSTRACT AND PURPOSE STATEMENT These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program. This dataset consists of date, time, and temperature measurements from intertidal rocky sampling sites, including predicted tide height at the time of the reading, which is used to distinguish air from water temperature readings. The data are provided as comma separated values (.csv) files derived from data downloaded from HOBO temperature loggers. The purpose of this dataset is to document intertidal water and air temperatures at intertidal study sites at Sitka National Historic Park.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Sea_Star_Count.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Counts of sea stars at sea stars sampling sites used to estimate the density of sea stars at sea star sites. Each record is the count of sea stars at a single sampling site",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764186?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Intertidal_metadata.xml",
    "format": "xml",
    "mediaType": "application/xml",
    "description": "EML Metadata",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764357?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Sea_Star_Size_Disease.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Length measurements and disease status of sea stars at sea star sampling sites. Each record shows the length and disease status of one sea star at a single sampling site.",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764187?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Intertidal_Temperature_Loggers.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Logger model information for loggers used to collect temperature, conductivity and dissolved oxygen",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764359?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Mytilus_Core_Count.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Mussel counts for all mussels collected from core samples",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764183?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Mytilus_20mm_Count.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Mussel counts for mussels greater than 20 millimeters in a quadrat",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764181?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Mytilus_Site_Info.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Mussel sampling site layout information",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764185?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Mytilus_Core_Size_Frequency.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Mussel size frequencies for all mussels collected from core samples",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764184?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Mytilus_20mm_Size.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Mussel size measurements for mussels greater than 20 millimeters in a quadrat",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764182?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Combined_Geographic_Info.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Mussel, bivalve and sea star sampling site geographic information",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764177?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Soft_Sediment_Bivalve_Count.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "The count of bivalves within 0.25 square meter quadrats sampled in Sitka National Historic Park. Each record (row) represents one site and quadrat for a given year",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764188?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Soft_Sediment_Bivalve_Size.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "The size of bivalves sampled in soft-sediment habitats at Sitka National Historic Park",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764190?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Intertidal_Temperature.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "This dataset consists of date, time, and temperature measurements from intertidal sampling sites, including predicted tide height at the time of the reading, which is used to distinguish air from water temperature readings",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764358?Reference=2320398"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SITK_2023-2026_Soft_Sediment_Bivalve_Site_Info.csv",
    "format": "csv",
    "mediaType": "text/csv",
    "description": "Year-specific site information for soft-sediment bivalve sampling locations in Sitka National Historic Park",
    "downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/764189?Reference=2320398"
  }
]
identifier http://datainventory.doi.gov/id/dataset/NPS_DataStore_2320398
issued 2026-10-07T00:00:00Z
keyword 
[
  "Air temperature",
  "Alaska",
  "Animals/invertebrates",
  "Aquatic biology",
  "Aquatic ecosystems",
  "Asteroidea",
  "Atmospheric/Ocean Indicators",
  "Benthic ecosystems",
  "Benthic habitat",
  "Bioindicator",
  "Biospheric indicators",
  "Biota",
  "Bivalve",
  "Coastal ecosystems",
  "Coastal habitat",
  "Coastal processes",
  "Community ecology",
  "Echinoderms",
  "Ecology",
  "Ecosystem monitoring",
  "Environment",
  "Field inventory and monitoring",
  "Field sampling",
  "Intertidal environments",
  "Macroinvertebrates",
  "Marine ecosystems",
  "Marine environment monitoring",
  "Marine environments",
  "Mollusks",
  "Mussels",
  "Myoida",
  "Mytiloida",
  "Mytilus trossulus",
  "Nearshore ecology",
  "Nuculoida",
  "Ocean heat budget",
  "Ocean temperature",
  "Ostreoida",
  "Pacific Blue Mussel",
  "Pholadomyoida",
  "Sea star",
  "Sea surface temperature",
  "Sitka National Historical Park",
  "Size distribution",
  "Spatial distribution",
  "Temperature indicators",
  "Temperature trends",
  "Temperature variability",
  "Transect sampling",
  "USGS:ASC198",
  "USGS:ASC462",
  "USGS:ASC463",
  "USGS:ASC486",
  "Veneroida",
  "Wildlife"
]
landingPage https://irma.nps.gov/DataStore/Reference/Profile/2320398
license https://creativecommons.org/publicdomain/zero/1.0/deed.en
modified 2026-10-07T00:00:00Z
programCode 
[
  "010:118",
  "010:119"
]
publisher 
{
  "name": "National Park Service",
  "@type": "org:Organization"
}
spatial -135.3319,57.04317,-135.3082,57.0527
temporal 2023-08-03/2026-09-10
theme 
[
  "Data Package"
]
title Intertidal Mussel, Bivalve, Sea Star and Temperature Logger Data from Sitka National Historical Park 2023-2026 — Data Package

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov