نتایج جستجو برای: cpue

تعداد نتایج: 435  

2012
Joel Rice

This paper follows from the indicator based analysis presented to the Western and Central Pacific Fisheries Commission (WCPFC) Scientific Committee (SC7, Clarke et al. 2011). Following a brief summary of exploratory data analysis, this report presents a Catch Per Unit Effort (CPUE) standardization for oceanic whitetip shark (Carcharhinus longimanus) taken in longline and purse seine fisheries b...

2009
Alex C. Wertheimer Joseph A. Orsi Emily A. Fergusson Molly V. Sturdevant Auke Bay

The Southeast Alaska Coastal Monitoring (SECM) project has been sampling juvenile salmon (Oncorhynchus spp.) and associated environmental parameters in northern Southeast Alaska (SEAK) since 1997 to better understand effects of environmental change on salmon production. A pragmatic application of this effort is to forecast the abundance of adult salmon returns in subsequent years. Since 2004, j...

2013
Simon D. Hoyle Hiroaki Okamoto

Executive Summary This paper represents part of the response to the independent review of the 2011 bigeye tuna (BET) stock assessment, specifically the examination of changes in targeting within the Japanese longline fishery operating to the tropical western and central Pacific Ocean (WCPO). This work was undertaken at the National Institute for Far Seas Fisheries (NIFSF) in Shimizu Japan over ...

Journal: :Revista de biologia tropical 2003
G Ponce-Díaz S Ortega-García S Hernández-Vázquez

The influence of the lunar phases on the catch-per-unit effort (CPUE) of the striped marlin (Tetrapturus audax) captured by the Cabo San Lucas, Baja California Sur, Mexico sport-fishing fleet from October 1987 to June 1989 was analyzed. The information is from 3,377 fishing trips by 13 vessels that represent about 10% of the fleet. The analysis of the CPUE showed a maximum in January 1988 and a...

2013
Marcus Sheaves Ross Johnston Ashlee Johnson Ronald Baker Rod M. Connolly

Despite estuary-to-estuary differences in assemblage composition, fish faunas of tropical IndoPacific estuaries show parallel patterns of temporal change, suggesting a common set of ecological drivers. One potentially important driver is the interaction of different patterns of occupancy by functional groups that display different life-history patterns. However, most studies that have considere...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده مرتع و آبخیزداری و شیلات و محیط زیست 1393

با توجه نقش اکولوژیکی و اهمیت اقتصادی کیلکا ماهیان در دریای خزر از یک سو و کاهش قابل توجه ذخایر آن در دهه اخیر از سوی دیگر، لزوم انجام مطالعه ای جامع به منظور مدیریت صید آن امری اجتناب ناپذیر است. این مطالعه با هدف بررسی ارتباط میان تغییرات cpue کیلکا ماهیان در سواحل جنوب شرقی دریای خزر شامل کیلکا معمولی (c. cultriventris)، کیلکا آنچوی (c. engrauliformis) و کیلکا چشم درشت (c. grimmi) با برخی عو...

2011
William A. Walsh Shelley C. Clarke

This report presents descriptive statistical summaries and generalized linear model (GLM) analyses of catch data for oceanic whitetip shark Carcharhinus longimanus and silky shark C. falciformis in the Hawaii-based pelagic longline fishery. This paper is a collaborative effort begun at the Secretariat of the Pacific Community (SPC) in New Caledonia and completed at the NOAA Fisheries Pacific Is...

G. Moradi, Kh. Aein Jamshid, Kh. Fazelpour, M. Nasouri, M. Rabbaniha,

In the present study relationship between shrimp catch per unit effort (CPUE) and satellite-based environmental parameters, chlorophyll-a (Chl-a) and sea surface temperature (SST), was investigated in 27 stations in Bushehr provincial waters in the geographical position from E 50˚ 44´ and N 28˚ 59´ to E 51˚ 40´ and N 27˚ 33´, in July 2017 and July 2018. SST and Chl-a data were extracted from +E...

2012
Marcus Sheaves Ross Johnston Rod M. Connolly Ronald Baker

Offshore catches of banana prawns, Penaeus merguiensis, are correlated with the extent of mangrove forests. However, recent evaluation has questioned whether the apparent relationship between juvenile penaeids and mangroves reflects specific utilisation of mangroves or just the use of shallow, organically rich, muddy habitats. We investigated this by focussing on juvenile P. merguiensis within ...

2013
Susan B. Adams

Dams and impoundments, both large and small, affect downstream physicochemical characteristics and upand downstream biotic communities. I tested whether small dams and their impoundments altered downstream crayfish assemblages in northern Mississippi. I sampled crayfish and measured physicochemical variables at 4 sites downstream of impoundments (outlet sites) and 4 sites not influenced by impo...

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