Rescaling of aerial survey data with information from small numbers of telemetry tags to estimate the size of a declining harbour seal population
ABSTRACT Estimates of both absolute abundance and trends in abundance are among the most basic pieces of information required for planning the conservation and management of wildlife populations. They are important for understanding both the current situation of species and potential risks to them....
Saved in:
Published in | Aquatic conservation Vol. 23; no. 1; pp. 135 - 144 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Blackwell Publishing Ltd
01.01.2013
Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Abstract | ABSTRACT
Estimates of both absolute abundance and trends in abundance are among the most basic pieces of information required for planning the conservation and management of wildlife populations. They are important for understanding both the current situation of species and potential risks to them.
This study presents estimates of the size of the harbour seal (Phoca vitulina) population associated with the Orkney Islands, a part of northern Scotland that used to contain one of the largest concentrations of this species in Europe.
The numbers of animals counted during aerial surveys of this area have decreased substantially over the period 2001–2010. ARGOS transmitters attached to flipper tags were used to rescale the counts into estimates of abundance and to confirm the rate of decline of this population.
Females hauled out for more of the survey window (0.84; bootstrap 95% CI: 0.63–0.99) than males (0.61; bootstrap 95% CI: 0.34–0.86). The animals hauled out less during weekends (0.57; bootstrap 95% CI: 0.40–0.74) than during the week (0.76; bootstrap 95% CI: 0.58–0.91).
The sex‐ratios of this population is unknown. Assuming it was close to 1:1, then there were around 3586 (bootstrap 95% CI: 2970–4542) harbour seals in Orkney in 2010. A female‐skewed sex‐ratio would reduce the population estimate, and a changing sex‐ratio might mean the counts understate the real decline.
The mean annual rate of decline in the Orkney population of harbour seals, over the period 2001–2010, is estimated at 13% (95% CI: 10.8–14.8). Similar data for Arisaig, on the west coast of Scotland, shows an increase of around 2% (95% CI: 1.5–2.4) and, assuming an equal sex‐ratio, 923 animals (95% CI: 765–1169) in 2007. Copyright © 2012 John Wiley & Sons, Ltd. |
---|---|
AbstractList | ABSTRACT
Estimates of both absolute abundance and trends in abundance are among the most basic pieces of information required for planning the conservation and management of wildlife populations. They are important for understanding both the current situation of species and potential risks to them.
This study presents estimates of the size of the harbour seal (
Phoca vitulina
) population associated with the Orkney Islands, a part of northern Scotland that used to contain one of the largest concentrations of this species in Europe.
The numbers of animals counted during aerial surveys of this area have decreased substantially over the period 2001–2010. ARGOS transmitters attached to flipper tags were used to rescale the counts into estimates of abundance and to confirm the rate of decline of this population.
Females hauled out for more of the survey window (0.84; bootstrap 95% CI: 0.63–0.99) than males (0.61; bootstrap 95% CI: 0.34–0.86). The animals hauled out less during weekends (0.57; bootstrap 95% CI: 0.40–0.74) than during the week (0.76; bootstrap 95% CI: 0.58–0.91).
The sex‐ratios of this population is unknown. Assuming it was close to 1:1, then there were around 3586 (bootstrap 95% CI: 2970–4542) harbour seals in Orkney in 2010. A female‐skewed sex‐ratio would reduce the population estimate, and a changing sex‐ratio might mean the counts understate the real decline.
The mean annual rate of decline in the Orkney population of harbour seals, over the period 2001–2010, is estimated at 13% (95% CI: 10.8–14.8). Similar data for Arisaig, on the west coast of Scotland, shows an increase of around 2% (95% CI: 1.5–2.4) and, assuming an equal sex‐ratio, 923 animals (95% CI: 765–1169) in 2007. Copyright © 2012 John Wiley & Sons, Ltd. Estimates of both absolute abundance and trends in abundance are among the most basic pieces of information required for planning the conservation and management of wildlife populations. They are important for understanding both the current situation of species and potential risks to them. This study presents estimates of the size of the harbour seal (Phoca vitulina) population associated with the Orkney Islands, a part of northern Scotland that used to contain one of the largest concentrations of this species in Europe. The numbers of animals counted during aerial surveys of this area have decreased substantially over the period 2001-2010. ARGOS transmitters attached to flipper tags were used to rescale the counts into estimates of abundance and to confirm the rate of decline of this population. Females hauled out for more of the survey window (0.84; bootstrap 95% CI: 0.63-0.99) than males (0.61; bootstrap 95% CI: 0.34-0.86). The animals hauled out less during weekends (0.57; bootstrap 95% CI: 0.40-0.74) than during the week (0.76; bootstrap 95% CI: 0.58-0.91). The sex-ratios of this population is unknown. Assuming it was close to 1:1, then there were around 3586 (bootstrap 95% CI: 2970-4542) harbour seals in Orkney in 2010. A female-skewed sex-ratio would reduce the population estimate, and a changing sex-ratio might mean the counts understate the real decline. The mean annual rate of decline in the Orkney population of harbour seals, over the period 2001-2010, is estimated at 13% (95% CI: 10.8-14.8). Similar data for Arisaig, on the west coast of Scotland, shows an increase of around 2% (95% CI: 1.5-2.4) and, assuming an equal sex-ratio, 923 animals (95% CI: 765-1169) in 2007. Copyright © 2012 John Wiley & Sons, Ltd. [PUBLICATION ABSTRACT] ABSTRACT Estimates of both absolute abundance and trends in abundance are among the most basic pieces of information required for planning the conservation and management of wildlife populations. They are important for understanding both the current situation of species and potential risks to them. This study presents estimates of the size of the harbour seal (Phoca vitulina) population associated with the Orkney Islands, a part of northern Scotland that used to contain one of the largest concentrations of this species in Europe. The numbers of animals counted during aerial surveys of this area have decreased substantially over the period 2001–2010. ARGOS transmitters attached to flipper tags were used to rescale the counts into estimates of abundance and to confirm the rate of decline of this population. Females hauled out for more of the survey window (0.84; bootstrap 95% CI: 0.63–0.99) than males (0.61; bootstrap 95% CI: 0.34–0.86). The animals hauled out less during weekends (0.57; bootstrap 95% CI: 0.40–0.74) than during the week (0.76; bootstrap 95% CI: 0.58–0.91). The sex‐ratios of this population is unknown. Assuming it was close to 1:1, then there were around 3586 (bootstrap 95% CI: 2970–4542) harbour seals in Orkney in 2010. A female‐skewed sex‐ratio would reduce the population estimate, and a changing sex‐ratio might mean the counts understate the real decline. The mean annual rate of decline in the Orkney population of harbour seals, over the period 2001–2010, is estimated at 13% (95% CI: 10.8–14.8). Similar data for Arisaig, on the west coast of Scotland, shows an increase of around 2% (95% CI: 1.5–2.4) and, assuming an equal sex‐ratio, 923 animals (95% CI: 765–1169) in 2007. Copyright © 2012 John Wiley & Sons, Ltd. |
Author | Duck, Callan Thompson, Dave Morris, Chris Lonergan, Mike Moss, Simon |
Author_xml | – sequence: 1 givenname: Mike surname: Lonergan fullname: Lonergan, Mike email: mel5@st-and.ac.uk organization: NERC Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, KY16 8LB, St Andrews, UK – sequence: 2 givenname: Callan surname: Duck fullname: Duck, Callan organization: NERC Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, KY16 8LB, St Andrews, UK – sequence: 3 givenname: Simon surname: Moss fullname: Moss, Simon organization: NERC Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, KY16 8LB, St Andrews, UK – sequence: 4 givenname: Chris surname: Morris fullname: Morris, Chris organization: NERC Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, KY16 8LB, St Andrews, UK – sequence: 5 givenname: Dave surname: Thompson fullname: Thompson, Dave organization: NERC Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, Fife, KY16 8LB, St Andrews, UK |
BookMark | eNp1kMtO3TAQhi1EpQKt1EewxIZNqC9JHC_RUQuoqBdo1aXl2GOOaRIfbAd6-hZ94zqcqhKLrjySv5lv5j9E-1OYAKE3lJxSQthbfW9OGRNiDx1QImVFRNPsL3XDKtFS_hIdpnRHCJEtbQ_Q72tIRg9-usXBYQ3R6wGnOT7AFludNX70eY395EIcdfZhwi6GEadRDwOe5rGHmJbODAOMkOMWZ32bcA4YUvalBXBeA07-FzwJsAVTbItvrWMf5ogTFOUmbObhSfAKvXB6SPD673uEvr1_93V1UV19Or9cnV1VhnMqKiNbxmzb2c46wzsrLFCQpK5Fb53TmlghjWG66XtOGkltJ5afuhd127nO8iN0vJu7ieF-Ltuqu7LNVJSK1m0tO84aWaiTHWViSCmCU5tYzopbRYlaAlclcLUEXtBqhz76Abb_5dTZl9Vz3qcMP__xOv5QreCiUd8_nqsPkt9I3jH1mf8BIiuVtQ |
CitedBy_id | crossref_primary_10_1007_s10344_019_1337_8 crossref_primary_10_1002_aqc_2609 crossref_primary_10_1098_rspb_2020_0318 crossref_primary_10_1371_journal_pone_0080727 crossref_primary_10_1038_s41598_017_11174_4 crossref_primary_10_3390_jmse12010118 crossref_primary_10_1007_s00300_016_1904_3 crossref_primary_10_1002_aqc_3092 crossref_primary_10_1002_aqc_3130 crossref_primary_10_1007_s00442_014_2970_2 crossref_primary_10_3390_d16010038 crossref_primary_10_3390_oceans2010003 crossref_primary_10_1016_j_tree_2014_03_005 crossref_primary_10_1002_aqc_3110 crossref_primary_10_1002_ece3_4923 crossref_primary_10_1007_s00300_016_2060_5 crossref_primary_10_1086_713958 crossref_primary_10_1111_mms_12541 crossref_primary_10_1111_mms_12992 crossref_primary_10_1002_ecs2_3111 crossref_primary_10_1111_1365_2664_12678 crossref_primary_10_3354_ab00580 |
Cites_doi | 10.1111/j.1748-7692.2001.tb01271.x 10.7557/3.2679 10.3354/meps341257 10.1890/07-0043.1 10.1111/j.1469-7998.2007.00311.x 10.1111/j.1365-2664.2005.01025.x 10.1046/j.1365-2664.1999.00434.x 10.1111/j.1748-7692.2005.tb01246.x 10.1111/j.1469-7998.1987.tb05958.x 10.1201/9781420010404 10.1080/00785236.1990.10422032 10.1111/j.1748-7692.2003.tb01130.x 10.1046/j.1365-2664.1998.00305.x 10.1111/j.1748-7692.2010.00446.x 10.1214/aoms/1177731358 10.1111/j.1748-7692.2005.tb01258.x 10.1111/j.1748-7692.2003.tb01113.x 10.2307/2404387 10.1093/icesjms/fsq001 |
ContentType | Journal Article |
Copyright | Copyright © 2012 John Wiley & Sons, Ltd. Copyright © 2013 John Wiley & Sons, Ltd. |
Copyright_xml | – notice: Copyright © 2012 John Wiley & Sons, Ltd. – notice: Copyright © 2013 John Wiley & Sons, Ltd. |
DBID | BSCLL AAYXX CITATION 7QH 7QL 7SN 7SS 7T7 7TN 7U9 7UA 8FD C1K F1W FR3 H94 H95 H99 L.F L.G M7N P64 |
DOI | 10.1002/aqc.2277 |
DatabaseName | Istex CrossRef Aqualine Bacteriology Abstracts (Microbiology B) Ecology Abstracts Entomology Abstracts (Full archive) Industrial and Applied Microbiology Abstracts (Microbiology A) Oceanic Abstracts Virology and AIDS Abstracts Water Resources Abstracts Technology Research Database Environmental Sciences and Pollution Management ASFA: Aquatic Sciences and Fisheries Abstracts Engineering Research Database AIDS and Cancer Research Abstracts Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources ASFA: Marine Biotechnology Abstracts Aquatic Science & Fisheries Abstracts (ASFA) Marine Biotechnology Abstracts Aquatic Science & Fisheries Abstracts (ASFA) Professional Algology Mycology and Protozoology Abstracts (Microbiology C) Biotechnology and BioEngineering Abstracts |
DatabaseTitle | CrossRef Aquatic Science & Fisheries Abstracts (ASFA) Professional Virology and AIDS Abstracts Technology Research Database Ecology Abstracts Aqualine Water Resources Abstracts Biotechnology and BioEngineering Abstracts Environmental Sciences and Pollution Management Entomology Abstracts Oceanic Abstracts Bacteriology Abstracts (Microbiology B) Algology Mycology and Protozoology Abstracts (Microbiology C) ASFA: Aquatic Sciences and Fisheries Abstracts Aquatic Science & Fisheries Abstracts (ASFA) Marine Biotechnology Abstracts AIDS and Cancer Research Abstracts Engineering Research Database Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources Industrial and Applied Microbiology Abstracts (Microbiology A) |
DatabaseTitleList | CrossRef Aquatic Science & Fisheries Abstracts (ASFA) Professional |
DeliveryMethod | fulltext_linktorsrc |
Discipline | Biology Ecology Oceanography |
EISSN | 1099-0755 |
EndPage | 144 |
ExternalDocumentID | 3146220311 10_1002_aqc_2277 AQC2277 ark_67375_WNG_K93S9382_P |
Genre | article |
GrantInformation_xml | – fundername: NERC – fundername: SNH |
GroupedDBID | .3N .GA .Y3 05W 0R~ 10A 1L6 1OB 1OC 1ZS 23M 31~ 33P 3SF 3WU 4.4 50Y 50Z 51W 51X 52M 52N 52O 52P 52S 52T 52U 52W 52X 5GY 5VS 66C 6J9 702 7PT 8-0 8-1 8-3 8-4 8-5 8UM 930 A03 AAESR AAEVG AAHHS AANLZ AAONW AASGY AAXRX AAZKR ABCQN ABCUV ABEML ABHUG ABIJN ACAHQ ACBWZ ACCFJ ACCZN ACGFO ACGFS ACPOU ACSCC ACXBN ACXME ACXQS ADAWD ADBBV ADDAD ADEOM ADIZJ ADKYN ADMGS ADOZA ADZMN ADZOD AEEZP AEGXH AEIGN AEIMD AEQDE AEUQT AEUYR AFBPY AFFPM AFGKR AFPWT AFVGU AFZJQ AGJLS AHBTC AIAGR AIURR AIWBW AJBDE AJXKR ALAGY ALMA_UNASSIGNED_HOLDINGS ALUQN AMBMR AMYDB ASPBG ATUGU AUFTA AVWKF AZBYB AZFZN AZVAB BAFTC BDRZF BFHJK BHBCM BMNLL BMXJE BNHUX BROTX BRXPI BSCLL BY8 CS3 D-E D-F DCZOG DDYGU DPXWK DR2 DRFUL DRSTM EBS ECGQY EJD F00 F01 F04 FEDTE G-S G.N GNP GODZA H.T H.X HF~ HVGLF HZ~ IX1 J0M JPC KQQ LATKE LAW LC2 LC3 LEEKS LH4 LITHE LOXES LP6 LP7 LUTES LW6 LYRES M62 MEWTI MK4 MRFUL MRSTM MSFUL MSSTM MXFUL MXSTM N04 N05 N9A NF~ NNB O66 O9- P2P P2W P2X P4D PALCI Q.N Q11 QB0 QRW R.K RIWAO RJQFR ROL RWI RX1 RYL SAMSI SUPJJ UB1 W8V W99 WBKPD WH7 WIB WIH WIK WNSPC WOHZO WQJ WRC WWD WXSBR WYISQ XG1 XV2 Y6R ZZTAW ~02 ~IA ~KM ~WT AAHBH AITYG HGLYW OIG AAYXX CITATION 7QH 7QL 7SN 7SS 7T7 7TN 7U9 7UA 8FD C1K F1W FR3 H94 H95 H99 L.F L.G M7N P64 |
ID | FETCH-LOGICAL-c3317-c9622d68d8dfc38d7de1e90447bdffaa0d79cc2a5bb30591d877bdf4b7468f8d3 |
IEDL.DBID | DR2 |
ISSN | 1052-7613 |
IngestDate | Fri Sep 13 05:11:02 EDT 2024 Fri Aug 23 00:36:18 EDT 2024 Sat Aug 24 01:07:20 EDT 2024 Wed Jan 17 05:09:01 EST 2024 |
IsPeerReviewed | true |
IsScholarly | true |
Issue | 1 |
Language | English |
LinkModel | DirectLink |
MergedId | FETCHMERGED-LOGICAL-c3317-c9622d68d8dfc38d7de1e90447bdffaa0d79cc2a5bb30591d877bdf4b7468f8d3 |
Notes | ArticleID:AQC2277 SNH NERC istex:0EECB0014534699EB58E13D578C85E52331F0A26 ark:/67375/WNG-K93S9382-P |
PQID | 1464983259 |
PQPubID | 2029164 |
PageCount | 10 |
ParticipantIDs | proquest_journals_1464983259 crossref_primary_10_1002_aqc_2277 wiley_primary_10_1002_aqc_2277_AQC2277 istex_primary_ark_67375_WNG_K93S9382_P |
PublicationCentury | 2000 |
PublicationDate | 2013-01 January 2013 2013-01-00 20130101 |
PublicationDateYYYYMMDD | 2013-01-01 |
PublicationDate_xml | – month: 01 year: 2013 text: 2013-01 |
PublicationDecade | 2010 |
PublicationPlace | Oxford |
PublicationPlace_xml | – name: Oxford |
PublicationTitle | Aquatic conservation |
PublicationTitleAlternate | Aquatic Conserv: Mar. Freshw. Ecosyst |
PublicationYear | 2013 |
Publisher | Blackwell Publishing Ltd Wiley Subscription Services, Inc |
Publisher_xml | – name: Blackwell Publishing Ltd – name: Wiley Subscription Services, Inc |
References | Huber HR, Jeffries SJ, Brown RF, DeLong RL, VanBlaricom G. 2001. Correcting aerial survey counts of harbor seals (Phoca vitulina richardsi) in Washington and Oregon. Marine Mammal Science 17: 276-293. Ries EH, Hiby LR, Reijnders PJH. 1998. Maximum likelihood population size estimation of harbour seals in the Dutch Wadden Sea based on a mark-recapture experiment. Journal of Applied Ecology 35: 332-339. Wood SN. 2006. Generalized Additive Models: An Introduction with R. Chapman and Hall: Boca Raton, FL. Baker JR, Fedak MA, Anderson SS, Arnbom T, Baker R. 1990. Use of a tiletamine-zolazepam mixture to immobilize wild gray seals and southern elephant seals. Veterinary Record 126: 75-77. Gilbert JR, Waring GT, Wynne KM, Guldager N. 2005. Changes in abundance of harbor seals in Maine, 1981-2001. Marine Mammal Science 21: 519-535. Lonergan M, Duck CD, Thompson D, Mackey BL, Cunningham L, Boyd IL. 2007. Using sparse survey data to investigate the declining abundance of British harbour seals. Journal of Zoology 271: 261-269. Thompson PM, Harwood J. 1990. Methods for estimating the population-size of common seals, Phoca vitulina. Journal of Applied Ecology 27: 924-938. Thompson D, Duck CD, Lonergan ME. 2010b. The status of harbour seals (Phoca vitulina)in the United Kingdom. North Atlantic Marine Mammal Commission (NAMMCO) Scientific Publications 8: 117-128. Brown RE, Wright BE, Riemer SD, Laake J. 2005. Trends in abundance and current status of harbor seals in Oregon: 1977-2003. Marine Mammal Science 21: 657-670. Hoef JMV, Boveng PL. 2007. Quasi-poisson vs. Negative binomial regression: how should we model overdispersed count data? Ecology 88: 2766-2772. Wald A, Wolfowitz J. 1943. An exact test for randomness in the non-parametric case based on serial correlation. Annals of Mathematical Statistics 14: 378-388. R Development Core Team. 2010. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing: Vienna. Simpkins M, Withrow DE, Cesarone JC, Boveng PL. 2003. Stability in the proportion of harbor seals hauled out under locally ideal conditions. Marine Mammal Science 19: 791-805. Härkönen T, Harding KC, Lunneryd SG. 1999. Age- and sex-specific behaviour in harbour seals Phoca vitulina leads to biased estimates of vital population parameters. Journal of Applied Ecology 36: 825-841. Teilmann J, Riget F, Härkönen T. 2010. Optimizing survey design for Scandinavian harbour seals: population trend as an ecological quality element. ICES Journal of Marine Science 67: 952-958. Argos. 1996. Argos Users' Manual. CLS ARGOS: Ramonville Saint-Agne, France. Harvey JT, Goley D. 2011. Determining a correction factor for aerial surveys of harbor seals in California. Marine Mammal Science 27: 719-735. Montgomery RA, Hoef JMV, Boveng PL. 2007. Spatial modeling of haul-out site use by harbor seals in Cook Inlet, Alaska. Marine Ecology Progress Series 341: 257-264. Small R, Pendleton GW, Pitcher KW. 2003. Trends in abundance of Alaska harbor seals, 1983-2001. Marine Mammal Science 19: 344-362. Bjørge A, Desportes G, Waring GT, Rossing-Asvid, A. 2010. Introduction: the harbour seal (Phoca vitulina) - a global perspective. North Atlantic Marine Mammal Commission (NAMMCO) Scientific Publications 8: 7-14. Härkönen T, Heide-Jørgensen MP. 1990. Comparative life histories of east atlantic and other harbor seal populations. Ophelia 32: 211-235. Thompson P, Rothery P. 1987. Age and sex-differences in the timing of molt in the common seal, Phoca vitulina. Journal of Zoology 212: 597-603. Grigg EK, Green DE, Allen SG, Markowitz H. 2002. Nocturnal and diurnal haul-out patterns of harbor seals (Phoca vitulina richardsi) at Castro Rocks, San Francisco Bay, California. California Fish and Game 88: 15-27. Thompson D, Lonergan M, Duck C. 2005. Population dynamics of harbour seals Phoca vitulina in England: monitoring growth and catastrophic declines. Journal of Applied Ecology 42: 638-648. 2010; 67 1990; 32 1987; 212 1990; 126 2007; 271 1990; 27 2010 2007; 341 1943; 14 2002; 88 1999; 36 1996 2007 2005; 42 2005; 21 2010a 2006 2001; 17 2003; 19 2011; 27 2007; 88 2010b; 8 2010; 8 1998; 35 e_1_2_6_10_1 Argos (e_1_2_6_2_1) 1996 e_1_2_6_19_1 e_1_2_6_13_1 e_1_2_6_14_1 Bjørge A (e_1_2_6_4_1) 2010; 8 Grigg EK (e_1_2_6_7_1) 2002; 88 e_1_2_6_11_1 e_1_2_6_12_1 e_1_2_6_17_1 e_1_2_6_18_1 e_1_2_6_15_1 e_1_2_6_21_1 e_1_2_6_20_1 e_1_2_6_9_1 e_1_2_6_8_1 e_1_2_6_5_1 R Development Core Team (e_1_2_6_16_1) 2010 e_1_2_6_6_1 e_1_2_6_25_1 e_1_2_6_24_1 Baker JR (e_1_2_6_3_1) 1990; 126 e_1_2_6_23_1 e_1_2_6_22_1 e_1_2_6_27_1 e_1_2_6_26_1 |
References_xml | – volume: 17 start-page: 276 year: 2001 end-page: 293 article-title: Correcting aerial survey counts of harbor seals ( ) in Washington and Oregon publication-title: Marine Mammal Science – volume: 8 start-page: 117 year: 2010b end-page: 128 article-title: The status of harbour seals ( )in the United Kingdom publication-title: North Atlantic Marine Mammal Commission (NAMMCO) Scientific Publications – volume: 27 start-page: 924 year: 1990 end-page: 938 article-title: Methods for estimating the population‐size of common seals, publication-title: Journal of Applied Ecology – volume: 21 start-page: 657 year: 2005 end-page: 670 article-title: Trends in abundance and current status of harbor seals in Oregon: 1977–2003 publication-title: Marine Mammal Science – volume: 212 start-page: 597 year: 1987 end-page: 603 article-title: Age and sex‐differences in the timing of molt in the common seal, publication-title: Journal of Zoology – year: 2007 – year: 1996 – year: 2010a – volume: 126 start-page: 75 year: 1990 end-page: 77 article-title: Use of a tiletamine‐zolazepam mixture to immobilize wild gray seals and southern elephant seals publication-title: Veterinary Record – volume: 88 start-page: 2766 year: 2007 end-page: 2772 article-title: Quasi‐poisson vs. Negative binomial regression: how should we model overdispersed count data? publication-title: Ecology – volume: 19 start-page: 791 year: 2003 end-page: 805 article-title: Stability in the proportion of harbor seals hauled out under locally ideal conditions publication-title: Marine Mammal Science – year: 2010 – volume: 341 start-page: 257 year: 2007 end-page: 264 article-title: Spatial modeling of haul‐out site use by harbor seals in Cook Inlet, Alaska publication-title: Marine Ecology Progress Series – volume: 67 start-page: 952 year: 2010 end-page: 958 article-title: Optimizing survey design for Scandinavian harbour seals: population trend as an ecological quality element publication-title: ICES Journal of Marine Science – volume: 42 start-page: 638 year: 2005 end-page: 648 article-title: Population dynamics of harbour seals in England: monitoring growth and catastrophic declines publication-title: Journal of Applied Ecology – volume: 271 start-page: 261 year: 2007 end-page: 269 article-title: Using sparse survey data to investigate the declining abundance of British harbour seals publication-title: Journal of Zoology – volume: 8 start-page: 7 year: 2010 end-page: 14 article-title: Introduction: the harbour seal ( ) – a global perspective publication-title: North Atlantic Marine Mammal Commission (NAMMCO) Scientific Publications – volume: 21 start-page: 519 year: 2005 end-page: 535 article-title: Changes in abundance of harbor seals in Maine, 1981–2001 publication-title: Marine Mammal Science – year: 2006 – volume: 36 start-page: 825 year: 1999 end-page: 841 article-title: Age‐ and sex‐specific behaviour in harbour seals leads to biased estimates of vital population parameters publication-title: Journal of Applied Ecology – volume: 35 start-page: 332 year: 1998 end-page: 339 article-title: Maximum likelihood population size estimation of harbour seals in the Dutch Wadden Sea based on a mark‐recapture experiment publication-title: Journal of Applied Ecology – volume: 32 start-page: 211 year: 1990 end-page: 235 article-title: Comparative life histories of east atlantic and other harbor seal populations publication-title: Ophelia – volume: 19 start-page: 344 year: 2003 end-page: 362 article-title: Trends in abundance of Alaska harbor seals, 1983–2001 publication-title: Marine Mammal Science – volume: 88 start-page: 15 year: 2002 end-page: 27 article-title: Nocturnal and diurnal haul‐out patterns of harbor seals ( ) at Castro Rocks, San Francisco Bay, California publication-title: California Fish and Game – volume: 14 start-page: 378 year: 1943 end-page: 388 article-title: An exact test for randomness in the non‐parametric case based on serial correlation publication-title: Annals of Mathematical Statistics – volume: 27 start-page: 719 year: 2011 end-page: 735 article-title: Determining a correction factor for aerial surveys of harbor seals in California publication-title: Marine Mammal Science – ident: e_1_2_6_12_1 doi: 10.1111/j.1748-7692.2001.tb01271.x – ident: e_1_2_6_22_1 doi: 10.7557/3.2679 – ident: e_1_2_6_15_1 doi: 10.3354/meps341257 – ident: e_1_2_6_11_1 doi: 10.1890/07-0043.1 – ident: e_1_2_6_14_1 doi: 10.1111/j.1469-7998.2007.00311.x – ident: e_1_2_6_25_1 doi: 10.1111/j.1365-2664.2005.01025.x – ident: e_1_2_6_9_1 doi: 10.1046/j.1365-2664.1999.00434.x – ident: e_1_2_6_6_1 doi: 10.1111/j.1748-7692.2005.tb01246.x – ident: e_1_2_6_24_1 doi: 10.1111/j.1469-7998.1987.tb05958.x – ident: e_1_2_6_27_1 doi: 10.1201/9781420010404 – ident: e_1_2_6_8_1 doi: 10.1080/00785236.1990.10422032 – volume: 126 start-page: 75 year: 1990 ident: e_1_2_6_3_1 article-title: Use of a tiletamine‐zolazepam mixture to immobilize wild gray seals and southern elephant seals publication-title: Veterinary Record contributor: fullname: Baker JR – ident: e_1_2_6_13_1 – ident: e_1_2_6_21_1 – ident: e_1_2_6_18_1 doi: 10.1111/j.1748-7692.2003.tb01130.x – ident: e_1_2_6_17_1 doi: 10.1046/j.1365-2664.1998.00305.x – volume: 88 start-page: 15 year: 2002 ident: e_1_2_6_7_1 article-title: Nocturnal and diurnal haul‐out patterns of harbor seals (Phoca vitulina richardsi) at Castro Rocks, San Francisco Bay, California publication-title: California Fish and Game contributor: fullname: Grigg EK – ident: e_1_2_6_10_1 doi: 10.1111/j.1748-7692.2010.00446.x – ident: e_1_2_6_26_1 doi: 10.1214/aoms/1177731358 – ident: e_1_2_6_5_1 doi: 10.1111/j.1748-7692.2005.tb01258.x – ident: e_1_2_6_19_1 doi: 10.1111/j.1748-7692.2003.tb01113.x – ident: e_1_2_6_23_1 doi: 10.2307/2404387 – ident: e_1_2_6_20_1 doi: 10.1093/icesjms/fsq001 – volume-title: R: A Language and Environment for Statistical Computing year: 2010 ident: e_1_2_6_16_1 contributor: fullname: R Development Core Team – volume: 8 start-page: 7 year: 2010 ident: e_1_2_6_4_1 article-title: Introduction: the harbour seal (Phoca vitulina) – a global perspective publication-title: North Atlantic Marine Mammal Commission (NAMMCO) Scientific Publications contributor: fullname: Bjørge A – volume-title: Argos Users' Manual year: 1996 ident: e_1_2_6_2_1 contributor: fullname: Argos |
SSID | ssj0009616 |
Score | 2.1457906 |
Snippet | ABSTRACT
Estimates of both absolute abundance and trends in abundance are among the most basic pieces of information required for planning the conservation and... Estimates of both absolute abundance and trends in abundance are among the most basic pieces of information required for planning the conservation and... |
SourceID | proquest crossref wiley istex |
SourceType | Aggregation Database Publisher |
StartPage | 135 |
SubjectTerms | coastal ecological status harbour seal island mammals monitoring survey |
Title | Rescaling of aerial survey data with information from small numbers of telemetry tags to estimate the size of a declining harbour seal population |
URI | https://api.istex.fr/ark:/67375/WNG-K93S9382-P/fulltext.pdf https://onlinelibrary.wiley.com/doi/abs/10.1002%2Faqc.2277 https://www.proquest.com/docview/1464983259/abstract/ |
Volume | 23 |
hasFullText | 1 |
inHoldings | 1 |
isFullTextHit | |
isPrint | |
link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV1ta9RAEF6kIohQ3_G0ygjit1yTzSab_VhKa1GsWi0W_BD2VaXtXU1y4vVf-I-d2SRXKwjipyxkN5vszO4-O5l5hrFnSqqgvMgTHTI8oOCpOlHBpkmlS1-gBoWspADn1_vl3qF4eVQcDV6VFAvT80OsDG40M-J6TRNcm3bzgjRUf7NTziUFkhOPHuGhgwvmKFXGrKeIHhBA4pY18s6mfHNseGknukqD-uMSzPwdrMbdZvcm-zS-Z-9kcjxddGZqz_-gcPy_D7nF1gcQClu91txmV_zsDrvWp6VcYmnHDqUbb6zXs4HV-i77eeBblCnudjAPoKPyQrtovvslkKspkFUXBi5WkjhQ9Aq0p_rkBPrcIy217Dw5rXfNEjr9uYVuDsT1gU08IB6F9uu5jx2A8zFyE_v7ohuyvwL5q8HZKuvYPXa4u_Nhey8ZcjokNkeoklhVcu7KylUu2Lxy0vnMq1QIaVwIWqdOKmu5LozBlUhlrpJ0RxgpyipULr_P1mbzmX_AwPHUWiOC0CYXwTmT2lD4UnL6N2jTbMKejvKtz3rqjronaeY1jnlNYz5hz6PgVxV0c0yubrKoP-6_qF-p_L1C5arfTtjGqBn1MMtbOjYJhQpdKHxOFPFfO6q33m3T9eG_VnzErvOYeYOsPRtsrWsW_jHin848iZr-C7OGBAQ |
link.rule.ids | 315,786,790,1382,27957,27958,46329,46753 |
linkProvider | Wiley-Blackwell |
linkToHtml | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV3db9QwDI_GJgRC4htxMCBIiLfe2jRtGvE0TRsH2w4Ym9gDUpTmY0Mbd6PtIW7_Bf8xdtreGBIS4qmRmjRtbCe2a_9MyAsppJeOp5H2CRgoYFVH0ps4KnTuMuAgn-SY4Lw7zkcH_O1hdrhEXvW5MC0-xMLhhpIR9msUcHRIr12ghupvZsiYEFfICkh7FuypvQvsKJmHuqegP4AKCYdWjzwbs7V-5KWzaAWX9cclRfN3dTWcN1u3yOf-Tdswk5PhrCmH5vwPEMf__JTb5Ganh9L1lnHukCU3uUuutpUp59DaNF3rxjvj9KQDtr5Hfu65GsgKBx6deqoD_9J6Vn13c4rRphQdu7SDY0WiU0xgofVXfXpK2_IjNY5sHMatN9WcNvqops2UItwHDHEUVFJafzl3YQJqXUjehPmOdYUuWIoha_RsUXjsPjnY2tzfGEVdWYfIpKCtREbmjNm8sIX1Ji2ssC5xMuZclNZ7rWMrpDFMZ2UJm5FMbCHwDi8Fzwtf2PQBWZ5MJ-4hoZbFxpTcc12m3FtbxsZnLhcMfw-aOBmQ5z2B1VmL3qFanGamYM0VrvmAvAyUX3TQ1QlGu4lMfRq_Vtsy_SjTgqn3A7Las4bqBL1Gy4lL4OlMwnMCjf86kVr_sIHXR__a8Rm5Ntrf3VE7b8bbj8l1FgpxoPNnlSw31cw9AXWoKZ8Gtv8F8GYIJg |
linkToPdf | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV3bbtQwELWgFQghcUcsFBgkxFu2iePE8WPVdikUllKoqMSD5fjSopbdJckitn_BH-Nxki1FQkI8xVLsOPGM7ePJzBlCngsunLAsjZRL_AHFn6oj4XQcFSq3mdcgl-QY4Px2nO8csNeH2WHnVYmxMC0_xNLghjMjrNc4wWfGrZ-Thqpvekgp55fJKstTihq9tX9OHSXykPbUwwePIP2e1RPPxnS9b3lhK1rFUf1xAWf-jlbDdjO6ST73L9p6mZwM50051Gd_cDj-35fcIjc6FAobrdrcJpfs5A650ualXPjStu5K199pqyYdrfVd8nPf1l6ofruDqQMVtBfqefXdLgB9TQHNutCRsaLIAcNXoP6qTk-hTT5SY8vGotd6Uy2gUUc1NFNAsg_fxIIHpFB_ObOhAzA2hG76_o5VhQZYQIc1mC3Tjt0jB6Ptj5s7UZfUIdKpxyqRFjmlJi9MYZxOC8ONTayIGeOlcU6p2HChNVVZWfqlSCSm4HiHlZzlhStMep-sTKYT-4CAobHWJXNMlSlzxpSxdpnNOcWfgzpOBuRZL185a7k7ZMvSTKUfc4ljPiAvguCXFVR1gr5uPJOfxi_lrkg_iLSgcm9A1nrNkN00r_HcxITX6Ez45wQR_7UjufF-E68P_7XiU3J1b2sk37wa7z4i12jIwoGWnzWy0lRz-9hjoaZ8EpT-F9_BBtU |
openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Rescaling+of+aerial+survey+data+with+information+from+small+numbers+of+telemetry+tags+to+estimate+the+size+of+a+declining+harbour+seal+population&rft.jtitle=Aquatic+conservation&rft.au=Lonergan%2C+Mike&rft.au=Duck%2C+Callan&rft.au=Moss%2C+Simon&rft.au=Morris%2C+Chris&rft.date=2013-01-01&rft.issn=1052-7613&rft.eissn=1099-0755&rft.volume=23&rft.issue=1&rft.spage=135&rft.epage=144&rft_id=info:doi/10.1002%2Faqc.2277&rft.externalDBID=n%2Fa&rft.externalDocID=10_1002_aqc_2277 |
thumbnail_l | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1052-7613&client=summon |
thumbnail_m | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1052-7613&client=summon |
thumbnail_s | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1052-7613&client=summon |