EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Estimating trends in abundance of dolphins associated with tuna in the eastern tropical pacific ocean using sightings data collected on commercial tuna vessels


Estimating trends in abundance of dolphins associated with tuna in the eastern tropical pacific ocean using sightings data collected on commercial tuna vessels



Fishery Bulletin (Washington D C) 90(1): 1-12



ISSN/ISBN: 0090-0656

We summarize the methods for estimating relative abundance of seven dolphin stocks in the eastern tropical Pacific Ocean using sightings data collected on commercial tuna vessels by trained observers, developed by Buckland and Anganuzzi (1988a) and Anganuzzi and Buckland (1989). Their estimates of relative abundance, which may show large year-to-year fluctuations, are smoothed to provide estimates of the underlying trend in dolphin abundance between 1976 and 1988. The bootstrap method provides estimation of precision in a way that allows trend estimates to be used for management purposes, without the need to assume that trends in abundance are linear. Concerns about the validity of the estimates are addressed.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 007313799

Download citation: RISBibTeXText

Related references

Relative abundance of dolphins associated with tuna in the eastern tropical Pacific in 1990 and trends since 1975, estimated from tuna vessel sightings data. Report of the International Whaling Commission 42: 541-546, 1992

Relative abundance of dolphins associated with tuna in the eastern tropical Pacific, estimated from tuna vessel sightings data for 1988 and 1989. Report of the International Whaling Commission 41: 497-506, 1991

Estimated trends in abundance of dolphins associated with tuna in the eastern tropical Pacific. International Whaling Commission Report of the Commission 38: 411-437, 1988

Relative abundance of dolphins associated with tuna in the eastern Pacific Ocean: Analysis of 1991 data. Report of the International Whaling Commission 1993(43): 459-465, 1993

Relative Abundance of Dolphins Associated With Tuna in the Eastern Pacific Ocean: Analysis of 1992 Data. Report of the International Whaling Commission 1994(44): 361-366, 1994

Small cetaceans. Relative abundance of dolphins associated with tuna in the eastern Pacific Ocean: analysis of 1991 data. Report of the International Whaling Commission 43: 459-465, 1993

Pelagic predator associations tuna and dolphins in the eastern tropical Pacific Ocean. Marine Ecology Progress Series 458: 283-302, 2012

A mixture model for estimating discarded bycatch from data with many zero observation: Tuna discards in the eastern tropical Pacific Ocean. U S National Marine Fisheries Service Fishery Bulletin 94(2): 330-340, 1996

The relationships between length and weight of yellowfin tuna and skipjack tuna from the Eastern Tropical Pacific Ocean. Bulletin Inter American Trop Tuna Comm 3(7): 307-352, 1959

The relative abundance of dolphins in the eastern tropical Pacific based on encounter rates with tuna purse seiners. Dissertation Abstracts International B Sciences and Engineering 45(1): 55, 1984

Fishery oceanography of bigeye tuna part 1 depth of capture by tuna longline gear in the eastern tropical pacific ocean. Mer 12(3): 128-136, 1974

The relationships between length and weight of yellowfin tuna (Neothunnus macropterus) and skipjack tuna (Katsuwonus pelamis) from the eastern tropical Pacific Ocean. Bulletin Inter-American Tropical Tuna Commission 3: 307-352, 1959

Fishery oceanography of bigeye tuna part 2 thermocline and dissolved oxygen content in relation to tuna longline fishing grounds in the eastern tropical pacific ocean. Mer 13(2): 58-71, 1975

Micronekton of the eastern tropical Pacific Ocean: family composition, distribution, abundance, and relations to tuna. Fishery BullWildl. Serv. U.S: 71-115, 1969

The Role of Research in Fisheries Management: The Conservation of Dolphins in the Eastern Tropical Pacific and the Exploitation of Southern Bluefin Tuna in the Southern Ocean. Ocean Development and International Law 31(4): 347-375, 2000