Marine turtle sightings, strandings and captures in French waters 1990-2003

{999A9551-D701-4CF5-9373-131D3DD8D969} 20050512 19291400 FALSE 20060710 17161900 20060815 12091700 NoneLand-basedSightingsNoneUnited Kingdom Relational database en We present data spanning approximately 100 years regarding the spatial and temporal occurrence of marine turtle sightings and strandings in the northeast Atlantic from two public recording schemes and demonstrate potential signals of changing population status. Records of loggerhead (n = 317) and Kemp’s ridley (n = 44) turtles occurring on the European continental shelf were most prevalent during the autumn and winter, when waters were coolest. In contrast, endothermic leatherback turtles (n = 1,668) were most common during the summer. Analysis of the spatial distribution of hard-shell marine turtle sightings and strandings highlights a pattern of decreasing records with increasing latitude. The spatial distribution of sighting and stranding records indicates that arrival in waters of the European continental shelf is most likely driven by North Atlantic current systems. Future patterns of spatial-temporal distribution, gathered from the periphery of juvenile marine turtles habitat range, may allow for a broader assessment of the future impacts of global climate change on species range and population size.We set out to determine the spatial and temporal trends for sightings, strandings and captures of hard-shell marine turtles in the northeast Atlantic from two recording schemes. One recording scheme (presented here) included marine turtle sightings, strandings and captures occurring in French waters that originated from annual sightings and strandings publications of Duguy and colleagues (Duguy 1990, 1992, 1993, 1994, 1995, 1996, 2004; Duguy et al. 1997a, b, 1999, 2000, 2001, 2002, 2003). Records presented in Duguy publications prior to 2001 contained location descriptions, providing no geographic coordinates with error estimates. Longitude and latitude positions for these events were estimated to be the closest coastal point to the descriptive location. Duguy publications, 2001 onwards, were accompanied by maps displaying the approximate location of sightings and strandings events. These maps were digitized and georeferenced and coordinate positions determined for all appropriate records. Georefenced hard-shell turtle (Lk and Cc) capture/sighting/stranding records from the papers of Duguy for France 1990-2003 (featured in Witt et al. 2007) only includes records that could have coordinates derived from their locational descriptions. The second recording scheme used were records of sightings and strandings of marine turtles in the British Isles obtained from the TURTLE database operated by Marine Environmental Monitoring. Data from the TURTLE database were submitted to EurOBIS and can be viewed on OBIS-SEAMAP: <a href="http://seamap.env.duke.edu/dataset/103151990">Marine Turtles.</a>Abstract is from Witt et al. 2007; data included in this dataset are a subset of data presented in Witt et al. 2007. References: Duguy, R. 1990. Observations de tortues marines en 1990 (Manche et Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 7:1053–1057. Duguy, R. 1992. Observations de tortues marines en 1991 (Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:35–37. Duguy, R. 1993. Observations de tortues marines en 1992 (Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:129–131. Duguy, R. 1994. Observations de tortues marines en 1993 (Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:235–238. Duguy, R. 1995. Observations de tortues marines en 1994 (Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:403–406. Duguy, R. 1996. Observations de tortues marines en 1995 (Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:505–513. Duguy, R. 2004. Observations de tortues marines en 2003 (cotes Atlantiques). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 9:361–366. Duguy, R., P. Moriniere and A. Meunier. 1997a. Observations de tortues marines en 1997. Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:761–779. Duguy, R., P. Moriniere and M.A. Spano. 1997b. Observations de tortues marines en 1996 (Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:625–632. Duguy, R., P. Moriniere and A. Meunier. 1999. Observations de tortues marines en 1998 (Atlantique). Annales de la Societe des Sciences Naturelles de la Charente-Maritime:911–924. Duguy, R., P. Moriniere and A. Meunier. 2000. Observations de tortues marines en 1999. Annales de la Societe des Sciences Naturelles de la Charente-Maritime 8:1025–1034. Duguy R, P. Moriniere and A. Meunier. 2001. Observations tortues marines en 2000 (Atlantique et Manche). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 9:17–25. Duguy, R., P. Moriniere and A. Meunier. 2002. Observations de tortues marines en 2001 (Atlantique et Manche). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 9. Duguy, R., P. Moriniere and A. Meunier. 2003. Observations de tortues marines en 2002 (Atlantique et Manche). Annales de la Societe des Sciences Naturelles de la Charente-Maritime 9:265–273. Witt, M2012Marine turtle sightings, strandings and captures in French waters 1990-2003https://doi.org/10.82144/6ce1d23aOBIS-SEAMAP877http://seamap.env.duke.edu/dataset/877OBIS-SEAMAPVersion 1.0.0 ground condition1990010820030810 CompleteNone planned -4.832.366751.0543.39-4.832.366743.3951.05United Kingdom Open public unless otherwise noted. See Use Constraints for details. 1. Not to use data obtained from OBIS-SEAMAP in any publication, product, or commercial application without proper attribution to the original data provider(s) and OBIS-SEAMAP unless the datasets are explicitly shown under the CC0 policy. Citations or credits are suggested as attribution. If the data you downloaded come from multiple datasets, a citation or credit to each of the datasets is required. Suggested citation for this dataset Witt, M. 2012. Marine turtle sightings, strandings and captures in French waters 1990-2003. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/877) on yyyy-mm-dd. Suggested citation for OBIS-SEAMAP: Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography 22(2):104-115 2. To forward the citation of any publication / report that made use of the data / tools provided by OBIS-SEAMAP for inclusion in our list of references. 3. Not to hold OBIS-SEAMAP or the original data providers liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets. 4. The burden for determining fitness for use of the downloaded data for any analyses lies entirely with the user. OBIS-SEAMAP or the original data providers do not support outcomes of your analyses that used the data you downloaded from OBIS-SEAMAP. 5. To consider inclusion of the accompanying transect (effort) dataset if available into the methodology of your analyses. 6. Not to redistribute the data you downloaded from OBIS-SEAMAP through any media without contect from OBIS-SEAMAP and the original data providers unless the datasets are explicitly shown under the CC0 policy. Shapefile Matthew WittUniversity of Exeter mailing and physical address

College of Life & Environmental Sciences

PenrynEnglandTR10 9EZUnited Kingdom +44 (0) 1326 567151M.J.Witt@exeter.ac.uk Integrated Taxonomic Information SystemIntegrated Taxonomic Information Systemhttp://www.itis.usda.gov/Downloaded April, 2004Refer to the contact information of the datasetMatthew Witt, University of ExeterWitt, M.J., R. Penrose and B.J. Godley2007Spatio-temporal patterns of juvenile marine turtle occurrence in waters of the European continental shelfMarine Biology151:873-885Duguy, R.1990Observations de tortues marines en 1990 (Manche et Atlantique).Annales de la Societe des Sciences Naturelles de la Charente-Maritime7:1053–1057Duguy, R.2004Observations de tortues marines en 2003 (cotes Atlantiques).Annales de la Societe des Sciences Naturelles de la Charente-Maritime9:361–366Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach2009OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributionsOceanography22(2):104-115http://www.tos.org/oceanography/article/obis-seamap-the-world-data-center-for-marine-mammal-sea-bird-and-sea-turtle en FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Ei Fujioka Nicholas School of Environment, Duke University mailing and physical addressDurhamNC27708

A328, LSRC

USA 919-613-8021 seamap-contact@duke.edu Connie KotDuke University http://www.nbii.gov/Biological Data Profilehttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile 20160614 20160614 ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset OBIS-SEAMAP Dataset ID 877 0.021 0.021 OBIS-SEAMAP Free Go to the OBIS-SEAMAP web site and click on [Datasets] tab appearing on upper left. Nicholas School of Environment, Duke Univ. OBIS-SEAMAP mailing and physical address DurhamNCUSA

A328, LSRC

27708 919-613-8021 seamap-contact@duke.edu Not to hold OBIS-SEAMAP liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets. Also please refer to Use Constraints. 002 Local Area Network 0.021 Shapefile Vector GCS_WGS_1984Decimal degrees1e-061e-06D_WGS_1984WGS_19846378137.000000298.257224GCS_WGS_1984 This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.Matthew Witt, University of ExeterBiogeographic dataBiogeographic dataNot applicableoidUnique ID (generated by OBIS-SEAMAP)Data providerUnique ID (generated by OBIS-SEAMAP)sp_obsSpecies observedData providerSpecies observedsp_tsnSpecies ITIS TSNData providerSpecies ITIS TSNstatusendefinition not providedData providerdefinition not providedstatusfrdefinition not providedData providerdefinition not providedsightstrandefinition not providedData providerdefinition not provideddayDay of observationData providerDay of observationmonthMonth of observationData providerMonth of observationyearYear of observationData providerYear of observationobs_dateDate of observationData providerDate of observationlatitudeLatitude of observationData providerLatitude of observationlongitudeLongitude of observationData providerLongitude of observationlocationDescription of locationData providerDescription of locationsclStraight carapace length (cm)Data providerStraight carapace length (cm)massMass (kg)Data providerMass (kg)obs_timeTime was not available so "00:00:00" was usedData providerTime was not available so "00:00:00" was usedobs_countCount was not available, so 1 was usedData providerCount was not available, so 1 was usednotesNotes on when time and count was not available, so "00:00:00" and 1 were used, respectivelyData providerNotes on when time and count was not available, so "00:00:00" and 1 were used, respectivelygeomdefinition not providedData providerdefinition not provided20060815 All observation records are included.Permissible values for date and time and coordinates were validated by the data provider and the OBIS-SEAMAP data manager. Species identification by the data provider was matched with Integrated Taxonomic Information System.Data were put through the OBIS-SEAMAP data registration steps.20121015