Seabirds, marine mammals, and turtles are caught during commercial fishing operations within the New Zealand Exclusive Economic Zone. In order to monitor the impacts of fishing on these species, New Zealand government observers on fishing vessels record any protected species bycatch incidents that occur. Observer data on protected species captures are maintained by the Ministry for Primary Industries, with identification of captured animals carried out by the Department of Conservation. The data have been summarised in a series of reports, with the most recent report covering the period from 2002–03 to the end of the 2008–09 fishing year (Abraham and Thompson 2011b).
This dataset provides a summary of protected species bycatch in trawl and longline fisheries, from the 2002–03 to 2012–13 fishing year (fishing years run from October 1 to September 30).
Observers are only present on some fishing vessels. To estimate total captures in a fishery, it is necessary to use statistical methods to extrapolate from the observed fishing to the unobserved fishing. The total observable captures are an estimate of the captures that would have been reported, had observers been present on all fishing vessels. There may be additional mortalities (such as birds that are struck by fishing gear but not brought on board the vessel) that are not recorded by observers. These are referred to as ‘cryptic mortalities’ and are not included in the estimates of total captures, nor is there any evaluation of potential survival of seabirds recorded as captured but subsequently released alive. The methods used for the estimation follow those described in technical reports on bycatch estimation for seabirds (Abraham and Thompson 2011a, Abraham et al. 2013), and marine mammals (Thompson et al. 2013).
####Notes about some Fields:
- **fishing_year** the fishing year of the capture. Fishing years run from 1 October to 30 September;
- **datetime** the date and time of the capture. All times are in New Zealand Standard Time (GMT+12);
- **status** whether the animal was alive or dead;
- **identification** how the identification was made (necropsy: by necropsy of the dead animal; photograph: from
an expert inspection of a photograph of the capture; imputation: imputed by correcting the observer code using
necropsy and photographic identifications of other captures with the same observer identification; as reported
by the observer);
- **method** the fishing method (surface longline; bottom longline; trawl; set net; or purse seine);
- **target** the target species reported by the fisher;
- **vessel_size** the length class of the vessel (a range in m).This dataset was downloaded from OBIS (https://obis.org/). The records for only marine mammals, seabirds, sea turtles and rays and sharks were extracted. Records with no longitude/latitude or no date (eventDate) were excluded.
OBIS dataset page:
<a target="_blank" href="https://obis.org/dataset/90d8bc63-5336-443f-b47d-a3f0c8e99d73">https://obis.org/dataset/90d8bc63-5336-443f-b47d-a3f0c8e99d73</a>
Data Provider's dataset page:
<a target="_blank" href="https://nzobisipt.niwa.co.nz/resource?r=protected_species_bycatch_nz">https://nzobisipt.niwa.co.nz/resource?r=protected_species_bycatch_nz</a>2013100420180926ground conditionAs neededOcean-179.9758368179.9568786-33.58584898-53.72034346
NoneMarine BiologyTaxon coveredMarine mammalsseabirdsSea turtlesRays and sharksIntegrated Taxonomic Information SystemUnknownIntegrated Taxonomic Information SystemNot applicableDownloaded April, 2004http://www.itis.usda.gov/Refer to the contact information of the datasetRefer to the contact information of the datasetmailing and physical addressRefer to the contact information of the datasetRefer to the contact information of the datasetRefer to the contact information of the datasetRefer to the contact information of the datasetRefer to the contact information of the datasetNot providedIdentified by observers or researchers conducting the surveyKingdomAnimaliaPhylumChordataSubphylumVertebrataClassChondrichthyesSubclassElasmobranchiiSuperorderEuselachiiOrderLamniformesFamilyLamnidaeGenusCarcharodonSpeciesCarcharodon carchariasGenusLamnaSpeciesLamna nasusFamilyCetorhinidaeGenusCetorhinusSpeciesCetorhinus maximusClassReptiliaOrderTestudinesSuborderCryptodiraSuperfamilyChelonioideaFamilyCheloniidaeSubfamilyCarettinaeGenusCarettaSpeciesCaretta carettaSubfamilyCheloniinaeGenusCheloniaSpeciesChelonia mydasFamilyDermochelyidaeGenusDermochelysSpeciesDermochelys coriaceaClassMammaliaSubclassTheriaInfraclassEutheriaOrderCetaceaSuborderOdontocetiFamilyDelphinidaeGenusCephalorhynchusSpeciesCephalorhynchus hectoriGenusDelphinusSpeciesDelphinus delphisGenusGlobicephalaSpeciesGlobicephala melasGenusLagenorhynchusSpeciesLagenorhynchus obscurusGenusOrcinusSpeciesOrcinus orcaGenusTursiopsSpeciesTursiops truncatusOrderCarnivoraSuborderCaniformiaFamilyOtariidaeGenusPhocarctosSpeciesPhocarctos hookeriClassAvesOrderProcellariiformesFamilyProcellariidaeGenusDaptionSpeciesDaption capenseGenusMacronectesSpeciesMacronectes halliGenusPachyptilaSpeciesPachyptila desolataSpeciesPachyptila turturSpeciesPachyptila vittataGenusProcellariaSpeciesProcellaria aequinoctialisSpeciesProcellaria cinereaSpeciesProcellaria parkinsoniSpeciesProcellaria westlandicaGenusPterodromaSpeciesPterodroma cookiiSpeciesPterodroma inexpectataSpeciesPterodroma lessoniiGenusPuffinusSpeciesPuffinus bulleriSpeciesPuffinus carneipesSpeciesPuffinus gaviaSpeciesPuffinus griseusSpeciesPuffinus tenuirostrisFamilyDiomedeidaeGenusDiomedeaSpeciesDiomedea epomophoraSpeciesDiomedea exulansGenusPhoebetriaSpeciesPhoebetria palpebrataGenusThalassarcheSpeciesThalassarche melanophrisFamilyHydrobatidaeSubfamilyOceanitinaeGenusFregettaSpeciesFregetta tropicaGenusGarrodiaSpeciesGarrodia nereisGenusOceanitesSpeciesOceanites oceanicusGenusPelagodromaSpeciesPelagodroma marinaFamilyPelecanoididaeGenusPelecanoidesSpeciesPelecanoides urinatrixFamilySpheniscidaeGenusEudyptesSpeciesEudyptes pachyrhynchusGenusEudyptulaSpeciesEudyptula minorSpeciesMegadyptes antipodesOrderCharadriiformesFamilyLaridaeGenusLarusSpeciesLarus dominicanusFamilyPhalacrocoracidaeGenusPhalacrocoraxSpeciesPhalacrocorax punctatus
Public.
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:
Abraham, E. 2020. Protected species bycatch in New Zealand fisheries. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152499) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/90d8bc63-5336-443f-b47d-a3f0c8e99d73)
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.
Edward Abraham; E. R. Abraham; F. N. ThompsonDragonfly Data Science; Dragonfly Data Science; Dragonfly Data Science
mailing and physical address
n/a; n/a; n/an/a; n/a; n/an/a; n/a; n/an/a; n/a; n/an/a; n/a; n/a
n/a; n/a; n/an/a; n/a; n/a
OBIS and SWP OBIS
Relational database
Abraham E R, Thompson F N (2016): Protected species bycatch in New Zealand fisheriesOBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributionsvector digital data
All attributes were measured and recorded during the survey and validated by the data provider.
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.
All observation records are included.Data were put through the OBIS-SEAMAP data registration steps.20200526Point
1e-061e-06Decimal degrees
D_WGS_1984WGS_1984
6378137.000000298.257224
Biogeographic dataBiogeographic dataNot applicableoidInternal IDData providerInternal IDidRecord IDData providerRecord IDdataset_idDataset IDData providerDataset IDscientificnameScientific nameData providerScientific namevernacularnameVernacular nameData providerVernacular nameaphiaidAphia IDData providerAphia IDtaxonranktaxononic rankData providertaxononic rankindividualcountGroup size / individual countData providerGroup size / individual counteventdateEvent date (precision varies)Data providerEvent date (precision varies)eventtimeEvent timeData providerEvent timedecimallatitudeLatitude in decimal degreesData providerLatitude in decimal degreesdecimallongitudeLongitude in decimal degreesData providerLongitude in decimal degreescoordinateprecisionCoordinate precisionData providerCoordinate precisioncatalognumberCatalog numberData providerCatalog numbercollectioncodeCollection codeData providerCollection codeoccurrencestatusOccurrence statusData providerOccurrence statusbasisofrecordBasis of record (HumanObservation / MachineObservation)Data providerBasis of record (HumanObservation / MachineObservation)modifiedDate/time the record was modifiedData providerDate/time the record was modifiednode_idNode IDData providerNode IDoccurrenceidOccurrence IDData providerOccurrence IDoccurrenceremarksOccurrence remarksData providerOccurrence remarkseventidEvent IDData providerEvent IDinstitutioncodeInstitution codeData providerInstitution codelifestageLife stageData providerLife stagesexGender of the animal if knownData providerGender of the animal if knownspeciesSpecies by providerData providerSpecies by providerdatasetidDataset ID by providerData providerDataset ID by providercountryCountryData providerCountrylocalityLocation of oceanData providerLocation of oceanwaterbodyDetails of oceanData providerDetails of oceandroppedFlag indicating the record was dropped (always false)Data providerFlag indicating the record was dropped (always false)absenceFlag indicating the record represents the absence of the species (always false)Data providerFlag indicating the record represents the absence of the species (always false)marineFlag indicating the record is for marine life (always true)Data providerFlag indicating the record is for marine life (always true)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.Edward Abraham, Dragonfly Data Science
Nicholas School of Environment, Duke University
OBIS-SEAMAP
mailing and physical address
A328, LSRCDurhamNC27708USA
919-613-8021
seamap-contact@duke.edu
OBIS-SEAMAP Dataset ID 103152499Not 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.
CSV and ESRI shapefile
OBIS-SEAMAP
Free
Go to the OBIS-SEAMAP web site.
2020070220200702
Ei Fujioka
Nicholas School, Duke Universitymailing and physical addressA328, LSRCDurhamNC27708USA
919-613-8021
seamap-contact@duke.edu
FGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local time
http://www.nbii.gov/Biological Data Profile