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Horseshoe Crab Top Impingement in New Jersey [New Jersey]

NJDEP Bureau of GIS Full Details

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Title
Horseshoe Crab Top Impingement in New Jersey [New Jersey]
Description
Atlantic horseshoe crabs (Limulus polyphemus) are an ecologically significant and imperiled species in the Delaware Bay. Due to overharvesting and habitat degradation and loss, horseshoe crab populations declined and a moratorium on horseshoe crab harvest was imposed in New Jersey in 2008. Recovery efforts are currently underway. One ongoing conservation program is reTURN the Favor (RTF), a large-scale citizen science project where volunteers walk transects of spawning beaches, rescuing horseshoe crabs that have been stranded, overturned, or trapped in natural or manmade impingement hazards before these crabs die from exposure or predation. Derived from RTF volunteer records, this data documents known horseshoe crab spawning beaches on the Delaware Bayshore and the number of crabs rescued by volunteer efforts after being overturned or trapped in different impingements on those beaches. This provides a foundation for identifying structures that constitute a hazard to horseshoe crabs and understanding the relative importance of different beaches and potential impingements in horseshoe crab survival.
Creator
NJDEP Bureau of GIS
Temporal Coverage
Last modified 2022-08-24
Date Issued
2022-08-24
Rights
New Jersey Department of Environmental Protection (NJDEP) Data Distribution Agreement. The data provided herein are distributed subject to the following conditions and restrictions: NJDEP assumes no responsibility to maintain them in any manner or form and disclaims any duty or obligation to either maintain availability of or to update the data. Terms of Agreement 1. All data is provided, as is, without any representation or warranty of any kind, implied, expressed or statutory including, but not limited to, the warranties of non-infringement of third party rights, title, merchantability or fitness for a particular use, freedom from computer virus nor are any such warranties to be implied with respect to the digital data layers furnished hereunder. User is responsible for understanding the accuracy limitations of all digital data layers provided herein, as documented in the accompanying cross-reference files (see SUPPLEMENTAL INFORMATION). Any reproduction or manipulation of the above data must ensure that the coordinate reference system remains intact. 2. Digital data received from the NJDEP may not be reproduced or redistributed without all the metadata provided. 3. Any maps, publications, reports, or other documents produced as a result of this project that utilize this digital data will credit the NJDEP's Geographic Information System (GIS) as the source of the data with the following credit/disclaimer: "This (map/publication/report) was developed using New Jersey Department of Environmental Protection Geographic Information System digital data, but this secondary product has not been verified by NJDEP and is not state-authorized or endorsed." 4. NJDEP makes no warranty that digital data are free of Copyright or Trademark claims or other restrictions or limitations on free use or display. Making a copy of this data may be subject to the copyright of trademark laws.
Access Rights
Public
Format
Shapefile
Language
English
Date Added
March 08, 2023

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Cite and Reference

  • Citation
    NJDEP Bureau of GIS (2022). Horseshoe Crab Top Impingement in New Jersey [New Jersey]. . https://gisdata-njdep.opendata.arcgis.com/datasets/njdep::horseshoe-crab-top-impingement-in-new-jersey (dataset)
  • BTAA Geoportal Link

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