{999A9551-D701-4CF5-9373-131D3DD8D969}2005051219291400FALSE20060710171619002006081512091700bottlenose dolphinMoreton BaySouth East QueenslandPlatformVesselsSightingsMicrosoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722enMarine megafauna populations in coastal waters are increasingly threatened by anthropogenic impacts. Moreton Bay, a large embayment in south-east Queensland, lies adjacent to one of the fastest growing regions in Australia and has a resident population of bottlenose dolphins, <i>Tursiops aduncus</i>. Evaluation of the effectiveness of any proposed management strategy requires robust population abundance estimates.<br><br> We estimated abundances of bottlenose dolphins in central eastern Moreton Bay (350 km2) using two commonly used abundance estimation methods for cetaceans: photo-identification mark-recapture and line-transect surveys. Mark-recapture data were analyzed in CAPTURE using a model that allowed capture probabilities to vary between sampling events and between individuals. Based on an estimated 76% of the population identifiable photographically, total abundance estimates were 673 ± 130 s.e. (1997) and 818 ± 152 s.e. (1998). Line-transect data, analyzed using DISTANCE, gave an abundance estimate of 407 ± 113.5 s.e. (2000). These abundance estimates are large compared with many other coastal bottlenose dolphin populations. The line-transect surveys comprised a pilot study, and the lower line-transect abundance estimate is probably best attributable to methodological issues. In particular, smaller mean group size was estimated for the line-transects surveys (2.85 ± 0.29 s.e.) than the mark-recapture surveys (4.87 ± 0.39 s.e., 1997; 5.78 ± 0.73 s.e., 1998), and line-transect group sizes were probably underestimated. In addition, the line-transect detection probability (g(o)) was assumed to be one but was almost certainly less than one. However, the possibility of an actual decline in population size cannot be ruled out. Coefficients of variation (CV) were lower for mark-recapture than for line-transect surveys, however, CVs of line-transect estimates could be lowered through improved survey design. We evaluated the power of these surveys to detect trends in potential population declines for bottlenose dolphins in Moreton Bay and make recommendations for ongoing monitoring strategies.Effort data do not include date/time.Lukoschek, V2010https://doi.org/10.82144/2a1a6ac5OBIS-SEAMAP494http://seamap.env.duke.edu/dataset/494OBIS-SEAMAPVersion 1.0.0ground condition2000-01-082000-11-08CompleteNone planned153.2586153.54665-27.163933-27.576333153.2586153.54665-27.576333-27.163933Open 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 Lukoschek, V. 2010. Bottlenose dolphin abundance in coastal Moreton Bay 2000. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/494) 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.ShapefileVimoksalehi LukoschekUniversity of California, Irvinemailing and physical addressvlukosch@uci.edu Vimoksalehi Lukoschek, University of California, IrvineLukoschek, V. and B.L. Chilvers2008Wildlife Research35(7):593-605Integrated Taxonomic Information Systemhttp://www.itis.usda.gov/Downloaded April, 2004Refer to the contact information of the datasetKingdomAnimalia202423PhylumChordata158852SubphylumVertebrata331030ClassMammalia179913SubclassTheria179916InfraclassEutheria179925OrderCetacea180403SuborderOdontoceti180404FamilyDelphinidae180415GenusTursiops180425SpeciesTursiops aduncus612596Halpin, 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. Hyrenbach2009Oceanography22(2):104-115http://www.tos.org/oceanography/article/obis-seamap-the-world-data-center-for-marine-mammal-sea-bird-and-sea-turtle enFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeEi FujiokaDuke Universitymailing and physical address

LSRC A328

DurhamNCUSAefujioka@duke.eduhttp://www.nbii.gov/Biological Data Profilehttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile2010-07-29ISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetDownloadable Data0.0210.021zipzipped shapefilehttp://seamap.env.duke.edu/dataset/494FreeGo to the OBIS-SEAMAP web siteOBIS-SEAMAPNicholas School of Environment, Duke Universitymailing and physical address

A328, LSRC

DurhamNC27708USA919-613-8021seamap-contact@duke.eduNot 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 degrees0.0001670.000167D_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.University of California, Irvineobs_dateDateobs_timeTime. Seconds are not proviced.sight_idTotal sightsobs_countGroup size, combining adult, juvenile and calf.adultNumber of adultjuvNumber of juvelinecalfNumber of calflongitudelongitudelatitudelatitudesp_obsSpecies observedsp_tsnITIS taxonomic serial number. This field added by OBIS-SEAMAPbehaviourBehavior of the animalsoidUnique ID number (generated by SEAMAP)20060815