Consulta: subjectFacets:"Catch"
Registros recuperados: 13
Data/hora: 06/06/2024 01:23:52

Рыбные ресурсы черного моря: многолетняя динамика, режим эксплуатации и перспективы управления
Provedor de dados: 13
Autores: Еремеев, В. Н.; Зуев, Г. В.
На основе комплексного анализа многолетней динамики ряда промыслово-биологических показателей пред­принята попытка определить характер и степень воздействия промышленного рыболовства на формирование рыбных ресурсов в Черном море (с начала 70-х годов по настоящее время), дать оценку их современного со­стояния и перспектив развития, а также выяснить роль обозначенного фактора в антропогенной перестройке экосистемы бассейна. Главной причиной катастрофического сокращения черноморского вылова в 1989 г. следует считать последовательное сокращение промыслового запаса, начиная с 1979 г., в результате посто­янно нараставшей интенсивности рыболовства. На это указывают: 1) наличие тесной отрицательной корре­ляционной связи (г = -0,898) между величиной запаса и...
Tipo: Journal Contribution
Palavras-chave: Промысловый запас; Вылов; Промысел; Черное море; The Black Sea; Catch; Fishery; Stock Fish catch statistics Stocks Stocks http://aims.fao.org/aos/agrovoc/c_28772.
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/202

Популяционная структура и условия формирования промыслового запаса хамсы Engraulis encrasicolus у побережья Крыма в осенне-зимний сезон 200/2008 гг.
Provedor de dados: 13
Autores: Зуев, Г. В.; Гуцал, Д. К.; Репетин, Л. Н.; Салехова, Л. П.; Мельникова, Е. Б.; Бондарев, В. А.; Мурзин, Ю. Л.
С помощью индекса отолитов установлена принадлежность хамсы, зимовавшей в 2007/2008 гг. у юго-западного и южного побережья Крыма, к черноморской популяции. Проанализирована динамика размерно-возрастной и половой структуры популяции в период зимовки, а также динамика промысла. Обсуждаются гидрометеорологические факторы, обусловившие  массовую осеннюю миграцию хамсы к черноморскому побережью Крыма.
Tipo: Journal Contribution
Palavras-chave: Хамса; Улов; Запас; Популяционная структура; Отолит; Чёрное море; Anchovy; Catch; Stock; Population structure; Otolith; Black Sea; Популяційна структура; Отоліт; Чорне море.
Ano: 2009
URL: http://repository.ibss.org.ua/dspace/handle/99011/841

Биологическая дифференциация и структура запаса черноморского шпрота sprattus spra ttus phalericus (pisces: clupeidae)
Provedor de dados: 13
Autores: Зуев, Г. В.; Мельникова, Е. Б.; Пустоварова, Н. И.
Изучали внутривидовую дифференциацию и структуру запаса шпрота из разных районов северо-западной части Черного моря. В качестве популяционных характеристик использованы следующие параметры возрас­тной структуры: общее количество поколений (годовых классов), относительная численность разных поко­лений, средний возраст особей в популяции, средние размеры одновозрастных особей. По трем показателям (из четырех) обнаружены достоверные (уровень значимости ниже 0,05) различия между шпротом из запад­ной (о-в Змеиный) и восточной (у западного и южного побережья Крыма) областей. Полученные результаты позволили уточнить предложенную нами ранее предварительную схему внутривидовой дифференциации и структуры запаса черноморского шпрота [5J, согласно которой данный вид в...
Tipo: Journal Contribution
Palavras-chave: Шпрот; Улов; Промысел; Перелов; Запас; Черное море; The Black Sea sprat; Catch; Fishery; Over fishing; Stock Stocks Fishing Stocks Fishing http://aims.fao.org/aos/agrovoc/c_28772 http://aims.fao.org/aos/agrovoc/c_26950.
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/192

Эколого-географическая гипотеза происхождения крупной черноморской ставриды (Pisces, Carangidae)
Provedor de dados: 13
Autores: Зуев, Г. В.; Мельникова, Е. Б.
На основе сведений о пространственных, структурно-функциональных и экологических характеристиках крупной ставриды (КС) и их изменчивости в связи с условиями среды обитания, предложена эколого-географическая гипотеза о происхождении КС и причинах ее массового появления в Черном море в конце 40-х годов XX в. Согласно данной версии, КС является результатом вторичного скрещивания между черноморским (Trachurus mediterraneus ponticus Aleev) и средиземноморским (T. mediterraneus mediterraneus Steind) подвидами, которое имело место в Черном море, куда средиземноморская форма проникла в наиболее маловодном за более чем 60-и летний период 1943 г. Высокая жизнеспособность первых поколений КС, характеризуемая поистине гигантскими (на фоне родительских форм) размерами...
Tipo: Journal Contribution
Palavras-chave: Черноморская крупная ставрида; Гибрид; Промысел; Улов; Миграция; Гетерозис; Поколение; Large-sized Black Sea scad; Hybrid; Fishing industry; Catch; Migration; Heterosis; Generation Degeneration Heterosis Migrations Hybrids Heterosis Hybrids http://aims.fao.org/aos/agrovoc/c_3705 http://aims.fao.org/aos/agrovoc/c_3707.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/164

Characterization and standardization of the Atlantic albacore French pelagic trawl fishery
Provedor de dados: 5
Autores: Nikolic, Natacha; Lauretta, Matthew; Patucca, Audrey; Morandeau, Gilles.
We compiled and analysed logbook data from the French trawl albacore fishery covering the period 1991–2015. The dataset comprised catch and effort data for the French fleet operating in the Bay of Biscay and Celtic Sea, as well as spatiotemporal and gear characteristics. Generalized linear modelling was used to model spatial, seasonal, environmental, and gear covariates of fleet CPUE rates. A long-term index of relative abundance is provided that can be integrated into the stock assessment of North Atlantic albacore. The analysis revealed higher albacore CPUE associated with relatively low sea surface temperature and distinct seasonal effects. The derived abundance trend for the French trawl fishery agreed with the estimated time series of stock abundance...
Tipo: Text
Palavras-chave: Albacore; Catch; Atlantic; Trawl; Fisheries; Stock.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00461/57256/59283.pdf

The problem of discards in fisheries
Provedor de dados: 5
Autores: Morizur, Yvon; Caillart, B; Tingley, D.
Introduction : It is now clear that the world's fishery resources are being subjected to exploitation at or above their capacity to produce maximum sustainable yields. At the same time as these trends are being felt, there is a very large wastage of fishery resources from discarding unwanted catches at sea. At the end of each fishing operation a part of the catch is often returned to the sea after sorting by the fishermen. A 1994 FAO report provided an estimate of global discards in commercial fisheries of 27 millions of tons per year compared to 50 million tons of direct human consumption. A more recent FAO document estimated that discards were in the order of 20 million tons in 1997. The majority of the world's fisheries are multi-species in nature and...
Tipo: Text
Palavras-chave: Marine; Wastage; Overview; World; Social; Economic; Ecology; Biology; Impact; Target; Species; Gear; Fishery; Bycatch; Catch; Discards.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/publication-1237.pdf

Results of the 2003 observer program on board the French purse seiner targeting Atlantic bluefin tuna in the Mediterranean sea
Provedor de dados: 5
Autores: Fromentin, Jean-marc; Farrugio, Henri.
In 2003, IFREMER implemented an observer program on board of the French purse seiner targeting bluefin tuna (BFT) in the Mediterranean Sea to collect the size composition of catches. The protocol and the sampling design were established by IFREMER and the operations were carried out by two independent scientific observers (each one following a given boat over two distinguished fishing seasons). The 788 BFT measured by the two observers during the ~ 190 fishing days were mostly small/juveniles fish and solely represented 2.7% of the total catches. The sampling appears largely insufficient to be representative of this fleet and was furthermore strongly biased (big BFT being under-sampled). From our viewpoint, the implementation of a joint observer program on...
Tipo: Text
Palavras-chave: Atlantic bluefin tuna; Catch; Size composition; Observer; Purse seine; Mediterranean; By-catch.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/00194/30502/28912.pdf

Analyses de données halieutiques (séries historiques) sur le thon germon, Thunnus alalunga, en Atlantique Nord-est
Provedor de dados: 5
Autores: Patucca, Audrey.
The works carried out during this course (March-August 2015) alowed to correct the datasets and to study the variation in catches of albacore tuna from 1967 to 2014 (except for the years 1987 to 1990) based on 3 gears: the trolling line, the line with cane and the pelagic trawl. Simultaneously, key ICCAT delivred was provide information to expert groups, with a view to defining fishing quotas. Catches released and fishing effort (defined by the number of vessels and the time spent at sea) have varied considerably over these 50 years, and have been increasing in recent years, after having decreased sharply. Fishing today is concentrated on the edge of the continental shelf, whereas it was very oceanic before. It is mainly juveniles that are caught, while...
Tipo: Text
Palavras-chave: Thunnus alalunga; Captures; Atlantique; Pêcheries; Thunnus alalunga; Catch; Atlantic; Fishery.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00388/49927/50501.pdf

Espèces inhabituelles capturées dans le sud du golfe de Gascogne. Synthèse 1997-2012
Provedor de dados: 5
Autores: De Casamajor, Marie-noelle; Morandeau, Gilles.
This report summarise the ichthyological data collected by the laboratory on unusual catches of the Aquitain coast. They are intended to fishermen who transmit information and are also displayed in the fishing market to allow feedback to the profession. Species are classified according to their ecological affinity and their families in a second way. The unusual nature of the capture is also mentioned if it is a first catch of the specie, if it is observed occasionally or more regularly in the landings. A review is made after 15 years of collecting information and perspectives it would be interesting to develop are reported .
Tipo: Text
Palavras-chave: Espèces inhabituelles; Sud golfe de Gascogne; Aquitaine; Captures; Rare species; South bay of Biscay; Aquitaine; Catch.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00117/22830/20772.pdf

Caractérisation biologique et variation des captures de la grande alose (Alosa alosa) par unité d'effort sur le fleuve Adour (Pyrénées Atlantiques, France)
Provedor de dados: 5
Autores: Prouzet, Patrick; Martinet, Jean-pierre; Badia, Jacques.
The study of logbooks from commercial fishermen on the Adour River and commercial samples allowed characterization of the allis shad population (Alosa alosa L.) caught during the period 1988-91. A better knowledge of the influence of hydroclimatic factors (rate of river flow and intensity of tidal coefficient) on the catchability of the species in that never was also obtained. Allis shad are mainly recruited to this fishery from the beginning of April to the end of May: between 78 and 89 % depending on year. Males in the population were on average younger than females. However, at the same age, males were significantly smaller in size and in weight than females. These results reinforce the knowledge already obtained on French stocks in the Loire and...
Tipo: Text
Palavras-chave: Alosa alosa; Grande alose ou alose vraie; Clupéidés; Captures; Stock; Pêche; Âge; Débit fluvial; Courant de marée; Atlantique; Alosa alosa; Allis shad; Clupeidae; Catch; Fishing effort; Stock assessment; Age composition; Flow and tidal currents; Atlantic.
Ano: 1994
URL: http://archimer.ifremer.fr/doc/00188/29891/28336.pdf

Trophic level-based indicators to track fishing impacts across marine ecosystems
Provedor de dados: 5
Autores: Shannon, Lynne; Coll, Marta; Bundy, Alida; Gascuel, Didier; Heymans, Johanna J;; Kleisner, Kristin; Lynam, Christopher; Piroddi, Chiara; Tam, Jorge; Travers-trolet, Morgane; Shin, Yunne.
Trophic level (TL)-based indicators have been widely used to examine fishing impacts in aquatic ecosystems and the induced biodiversity changes. However, much debate has ensued regarding discrepancies and challenges arising from the use of landings data from commercial fisheries to calculate TL indicators. Subsequent studies have started to examine survey-based and model-based indicators. In this paper, we undertake an extensive evaluation of a variety of TL indicators across 9 well-studied marine ecosystems by making use of model- as well as surveyand catch-based TL indicators. Using detailed regional information and data on fishing history, fishing intensity, and environmental conditions, we evaluate how well TL indicators are capturing fishing effects...
Tipo: Text
Palavras-chave: Trophic level; Global comparison; Indicator; Survey; Catch; Ecosystem model; Trophic spectra; Convention on Biological Diversity; Food webs; Ecosystem approach to fisheries.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00222/33361/31768.pdf

The spiny lobster fishery around the Mahe Plateau November - December 1993: presentation, results and analysis
Provedor de dados: 20
Autores: Jacques, R.M.
This report reviews the catch assessment survey, conducted by staff of the Seychelles Fishing Authority (SFA), of the spiny lobster fishery on the Mahe Plateau during the 1993 fishing season. Following the recommendations made after the 1992 fishing season, the fishery was reopened in 1993 for two months, November and December. The monitoring programme set up in 1992 was continued to gather more information on the spiny lobster so as to improve the management of this resource around the Mahe Plateau. A total of 28 licenses were issued (compared to 38 in 1992); 16 on Mahe, 6 on Praslin and 6 on La Digue. Licensed fishing unit comprised an average of three men. Snorkelling was used by 24 fishing units as the only catching method, while 2 fishing units...
Tipo: Report
Palavras-chave: Catch; Analysis; Seychelles Lobster fisheries.
Ano: 1994
URL: http://hdl.handle.net/1834/1345

Actual status of fishing reserves of the Yesil River
Provedor de dados: 103
Autores: Kurzhykayev,Zhumagazy; Syzdykov,Kuanysh; Assylbekova,Ainur; Sabdinova,Dinara; Fefelov,Viktor.
ABSTRACT In this article, the study and prediction of the state of fish resources in the Yesil River was carried out to determine the boundary reference points of the reserve and management decisions in case they are exceeded, to ensure sustainable fisheries and preserve biological diversity. Ichthyological studies, retrospective analyses and rankings of the effects of the water supply of the Yesil River on fish stocks have been carried out, critical values of the biomass of fishing reserves have been determined, as criteria for biologically safe fishing values and targets for management of fish stocks at reaching the boundary values of 24.03 tonnes have been established. According to the results of studies of basic biological indicators, it was determined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass of fishing reserve; Catch; Fish productivity; Ichthyological studies.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100323