Invasive Crabs Inventory at Assateague Island National Seashore - Open Format Dataset
An invasive crab inventory survey was performed to document the abundance and spatial distribution of the European green crab (Carcinus maenas) and the Japanese shore crab (Hemigrapsus sanguineus) at Assateague Island National Seashore (ASIS) which forms the eastern boundaries of Chincoteague and Sinepuxent Bays. Three habitat types (rocky, vegetated and unvegetated) are present within the Chincoteague and Sinepuxent Bays. Each habitat type was sampled to determine if different habitat types support different populations of these invasive crabs. Rocky habitat is known to be limited in these bays and there are only seven known locations of this habitat type. Crab traps were placed at randomly assigned stations where tidal elevations are within the known range and preferences of the invasive crabs.
Throughout two surveys representing July and September conditions, 15 species were collected and only one species was identified as an invasive crab. Only three C. maenas were captured throughout the project. These individuals were captured during the July survey at one of the rocky habitat stations. No invasive crab species were collected at either the vegetated or unvegetated habitats. Discrete water quality parameters that were measured during the initial deployment indicate that temperature and salinity at the survey stations may be at the extreme end of this species tolerance.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:24"
]
|
| contactPoint |
{
"fn": "NPS IRMA Help",
"@type": "vcard:Contact",
"hasEmail": "mailto:NRSS_DataStore@nps.gov"
}
|
| description | An invasive crab inventory survey was performed to document the abundance and spatial distribution of the European green crab (Carcinus maenas) and the Japanese shore crab (Hemigrapsus sanguineus) at Assateague Island National Seashore (ASIS) which forms the eastern boundaries of Chincoteague and Sinepuxent Bays. Three habitat types (rocky, vegetated and unvegetated) are present within the Chincoteague and Sinepuxent Bays. Each habitat type was sampled to determine if different habitat types support different populations of these invasive crabs. Rocky habitat is known to be limited in these bays and there are only seven known locations of this habitat type. Crab traps were placed at randomly assigned stations where tidal elevations are within the known range and preferences of the invasive crabs. Throughout two surveys representing July and September conditions, 15 species were collected and only one species was identified as an invasive crab. Only three C. maenas were captured throughout the project. These individuals were captured during the July survey at one of the rocky habitat stations. No invasive crab species were collected at either the vegetated or unvegetated habitats. Discrete water quality parameters that were measured during the initial deployment indicate that temperature and salinity at the survey stations may be at the extreme end of this species tolerance. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "ASIS_InvasiveCrabs_Inventory_metadata.xml",
"format": "xml",
"mediaType": "application/xml",
"description": "EML metadata",
"downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/689195?Reference=2299571"
},
{
"@type": "dcat:Distribution",
"title": "ASIS_InvasiveCrabs_Occurrence.csv",
"format": "csv",
"mediaType": "text/csv",
"description": "Invasive Crabs inventory at Assateague Island National Seashore Occurrences",
"downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/689196?Reference=2299571"
},
{
"@type": "dcat:Distribution",
"title": "ASIS_InvasiveCrabs_SurveyEvent.csv",
"format": "csv",
"mediaType": "text/csv",
"description": "Invasive Crabs inventory at Assateague Island National Seashore Survey Events",
"downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/689197?Reference=2299571"
},
{
"@type": "dcat:Distribution",
"title": "ASIS_InvasiveCrabs_Taxon.csv",
"format": "csv",
"mediaType": "text/csv",
"description": "Invasive Crabs inventory at Assateague Island National Seashore Taxon List",
"downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/689198?Reference=2299571"
},
{
"@type": "dcat:Distribution",
"title": "ASIS_InvasiveCrabs.zip",
"format": "ZIP",
"mediaType": "application/zip",
"description": "Survey events, occurrences and taxa, includes EML Metadata. (suggested download)",
"downloadURL": "https://irma.nps.gov/DataStore/DownloadFile/689265?Reference=2299571"
}
]
|
| identifier | http://datainventory.doi.gov/id/dataset/NPS_DataStore_2299571 |
| issued | 2023-04-27T00:00:00Z |
| keyword |
[
"ASIS",
"Archosargus probatocephalus",
"Asian shore crab",
"Assateague Island National Seashore",
"Callinectes sapidus",
"Carcinus maenas",
"Centropristis striata",
"Crab",
"Dyspanopeus sayi",
"Ecological Framework: Biological Integrity | Invasive Species | Invasive/Exotic animals",
"European green crab",
"Fukui style traps",
"Fundulus heteroclitus",
"Hemigrapsus sanguineus",
"Hypsoblennius hentz",
"IMD",
"Invasive Species",
"Japanese shore crab",
"Leiostomus xanthurus",
"Libinia emarginata",
"Malaclemys terrapin terrapin",
"NPS",
"NPS Inventory and Monitoring Division",
"NPS Species Inventory Program",
"National Park Service",
"Northern Diamond-backed Terrapin",
"Northern Diamondback Terrapin",
"Open-format",
"Opsanus tau",
"Orthopristis chrysoptera",
"Pagurus",
"Paralichthys dentatus",
"Say mud crab",
"Sphoeroides maculatus",
"black sea bass",
"blue crab",
"bluepoint",
"feather blenny",
"fluke",
"green crab",
"mummichog",
"northern puffer",
"oyster toadfish",
"pigfish",
"portly spider crab",
"sheepshead",
"spot",
"summer flounder",
"water quality"
]
|
| landingPage | https://irma.nps.gov/DataStore/Reference/Profile/2299571 |
| modified | 2023-04-27T00:00:00Z |
| programCode |
[
"010:118",
"010:119"
]
|
| publisher |
{
"name": "National Park Service",
"@type": "org:Organization"
}
|
| spatial | -75.41369,37.8564,-75.0864,38.3291 |
| temporal | 2021-07-12/2021-09-30 |
| theme |
[
"Data Package"
]
|
| title | Invasive Crabs Inventory at Assateague Island National Seashore - Open Format Dataset |
