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Тяжелые металлы и мышьяк в воде, донных осадках и калкане (Scophthalmus maeoticus, Pall., 1814) в районах Кавказского шельфа Черного моря (1995–2020 гг.)
No full textThe results of investigation of the pollution of the water and bottom sediments of the Caucasian Shelf in the Black Sea by heavy metals (copper, zinc, lead, cadmium, mercury) and arsenic, as well as their content in the Black Sea turbot Scophthalmus maeoticus (Pallas, 1814) are presented for 1995–2020. In the water and turbot, the determination of Zn, Cu, Pb, As, and Cd has been conducted using the method of atomic absorption with electrothermal atomization; mercury in all components of the ecosystems was measured using the method of atomic absorption with “cold steam”; in the bottom sediments, the content of Zn, Cu, Pb and As was identified using X-ray fluorescence method. In 1995–2020, in some water samples, the concentrations of zinc, copper and mercury exceeded the maximum permissible level established for the water bodies of fisheries importance, while the lead and cadmium were below it. The arsenic content during the entire observation period was extremely low. A noticeable decrease in the concentrations of zinc, lead and copper in the shelf waters of the Black Sea in the present period as compared with the years of the greatest pollution (1995–2002) was recorded. In the bottom sediments, the content of lead, zinc and mercury exceeded their content in the earth's crust for several years; for arsenic, the excess was recorded throughout the entire observation period. This mostly results from the peculiarities of the granulometric composition of the shelf bottom and, to a much lesser extent, from anthropogenic influence. The differences in the bioaccumulation of heavy metals and arsenic in the organs of the Black Sea turbot are shown. Out of the identified elements, only lead, mercury and arsenic in isolated cases exceeded the permissible level in the organs of the turbot in some years.Представлены результаты исследований загрязнения тяжелыми металлами (медь, цинк, свинец, кадмий, ртуть) и мышьяком воды и донных отложений Кавказского шельфа Черного моря и собственно черноморского калкана Scophthalmus maeoticus (Pallas, 1814) в период с 1995 по 2020 г. В воде и калкане определение Zn, Cu, Pb, As и Cd проводили методом атомной абсорбции с электротермической атомизацией; ртути во всех элементах экосистемы — методом атомной абсорбции в «холодном паре»; Zn, Cu, Pb и As в донных отложениях — рентгенфлуоресцентным методом. В отдельных пробах воды концентрации цинка, меди и ртути превышали предельно допустимую концентрацию для рыбохозяйственных водоемов, в то время как концентрации свинца и кадмия — нет. Содержание мышьяка в течение всего периода наблюдений оставалось крайне низким. Было отмечено заметное снижение концентраций цинка, свинца и меди в воде шельфа Черного моря в современный период по сравнению с периодом наибольшего загрязнения (1995–2002 гг.). В донных осадках содержание свинца, цинка и ртути в течение ряда лет превышало содержание в земной коре; для мышьяка превышение наблюдалось в течение всего периода наблюдений. Очевидно, что данная ситуация в большей степени связана с особенностями гранулометрического состава дна шельфа, чем с антропогенным влиянием. Показаны различия в биоаккумуляции тяжелых металлов и мышьяка органами черноморского калкана. Из перечня определяемых элементов превышение допустимого уровня в органах калкана отмечалось в отдельные годы в единичных случаях для свинца, ртути и мышьяка.PublishedReferee
Ichthyofauna of Ciénaga de Zapata National Park, Cuba
No full textInventory of the fish inhabiting the Ciénaga de Zapata National Park, in the south of Matanzas province, were carried out on March and May 2018. This research presents the first check list of fish on this protected area published in peer-reviewed literature. The spereviewed) of the Protected Area of Management Resources Península de Zapata ichthyofauna. High frequency of the invasive exotic species lionfish (Pterois volitans) (Linnaeus, 1758) is remarkable. In Ciénaga de Zapata National Park occurs 16 % of the Cuban ichthyofauna, 17 % of the strictly marine fish, 11 % of the Chondrichthyes and 18 % of the Actinopterygii. Diversity of taxa is high in Ciénaga de Zapata National Park, being the most diverse families generally the same among regions, although they rank different. Two potential spawning aggregation sites for fish, one of tiger grouper Mycteroperca tigris and one of black grouper (M. bonaci), were detected.cies identification was mainly in situ using random swimming but also reviewing 3968 minutes of baited remote underwater videos (BRUVs) and high resolution photographs. The inventory includes 169 species of 53 families. This adds 67 species to the list (no peer-reviewed) of the Protected Area of Management Resources Península de Zapata ichthyofauna. High frequency of the invasive exotic species lionfish (Pterois volitans) (Linnaeus, 1758) is remarkable. In Ciénaga de Zapata National Park occurs 16 % of the Cuban ichthyofauna, 17 % of the strictly marine fish, 11 % of the Chondrichthyes and 18 % of the Actinopterygii. Diversity of taxa is high in Ciénaga de Zapata National Park, being the most diverse families generally the same among regions, although they rank different. Two potential spawning aggregation sites for fish, one of tiger grouper Mycteroperca tigris and one of black grouper (M. bonaci), were detected.En los meses de marzo y mayo de 2018 se realizaron inventarios de la ictiofauna en el Parque Nacional Ciénaga de Zapata, al sur de la provincia de Matanzas. Este trabajo presenta el primer inventario publicado en revista arbitrada de la ictiofauna para esta área protegida. La identificación de los peces se realizó principalmente in situ, mediante buceo libre al azar, así como a través de la revisión de 3968 minutos de videos submarinos remotos con carnada (BRUVs en inglés) y de fotografías de alta resolución. La ictiofauna está compuesta por 169 especies agrupadas en 53 familias. Se adicionan 67 especies a la lista de peces (no publicada) del Área Protegida de Recursos Manejados Península de Zapata. Se destaca la alta frecuencia de la especie invasora Pez león (Pterois volitans). En el Parque Nacional Ciénaga de Zapata está representado el 16 % de la ictiofauna cubana, el 17 % de los peces estrictamente marinos, el 11 % de los Chondrichthyes y el 18 % de los Actinopterygii. La diversidad de taxa en el Parque Nacional Ciénaga de Zapata es alta, siendo las familias más diversas similares a otras regiones, aunque el orden varía entre unas y otras. Se consignan Hypoplectrus randallorum y H. maculiferus para el área. Se detectaron dos potenciales nuevos sitios de agregación reproductiva de peces, uno de bonací gato (Mycteroperca tigris) y otro de aguají (M. bonaci).PublishedReferee
Структура и состояние популяции европейского анчоуса (Engraulis encrasicolus L., 1758), зимующего у берегов Абхазии в промысловый сезон 2020/2021 гг.
No full textThis paper presents the results of analytical processing of the data collected over the course of the 2020/2021 fishing season on the ecological structure and fishing biological parameters of the European anchovy (E. encrasicolus L., 1758), wintering in the coastal waters of Abkhazia. The dynamic parameters of the Azov and Black Sea stocks of the European anchovy have also been analyzed, and a comparative analysis of the main biometric parameters has been carried out. This work is aimed at the assessment of the state of migratory anchovy aggregations in winter based on the results of the 2020/2021 fishing season and identification of the changes in the main population parameters with application of the generally accepted ichthyological methods. Following the data on the anchovy catches for the investigated period, this paper presents the dynamics of the length–age catch composition and intra-annual patterns of the anchovy fishery for the both forms (Black Sea and Azov Sea). The changes in population characteristics as evidenced from the catch composition as compared to the previous years were recorded, as well as the spatial distribution of the anchovy aggregations wintering in the Abkhazian Black Sea. The monthly absolute values are given for the catch sizes, as well as their fluctuations. The results showing the main dynamic changes in the wintering aggregations of anchovy have been obtained; they characterized the status of the anchovy population as stable with a tendency for low biomass development. It provides the basis for a conclusion that an increase in fishing effort in the next 2–3 years is unacceptable.В работе представлены результаты аналитической обработки данных промыслового сезона 2020/2021 гг. по экологической структуре и промыслово-биологическим параметрам европейского анчоуса (E. encrasicolus L., 1758), зимующего в прибрежных водах Абхазии. Также проанализированы динамические параметры азово-черноморской хамсы и проведен сравнительный анализ ее основных биометрических параметров. Целью работы является установление состояния мигрирующих скоплений хамсы в зимний период по результатам промыслового сезона 2020/2021 гг. и выявление изменений основных внутрипопуляционных параметров с использованием общепринятых ихтиологических методик. В работе на основе данных об анчоусе (черноморском и азовском), добытом в изучаемый период, представлены динамика размерно-возрастной структуры уловов и внутригодовые закономерности динамики его промысла. Отмечены изменения популяционных характеристик в составе уловов по сравнению с предыдущими годами, а также пространственное распределение косяков, зимующих в абхазской акватории Черного моря. Даны абсолютные значения выловов по месяцам и их колебания. Получены результаты, показывающие основные динамические изменения в зимующих скоплениях хамсы, которые позволяют характеризовать ее популяцию в целом как стабильную с тенденцией к формированию общей биомассы на невысоком уровне, что является основой для формулирования вывода о недопустимости увеличения промыслового усилия в ближайшие 2–3 года.PublishedReferee
Inusual alta densidad del parche ocelado (Chaetodon capistratus) en el arrecife de coral de Punta Francés, Cuba
No full textWe report an unusual high density of the foureye butterflyfish (Chaetodon capistratus) in
Punta Francés coral reef, Isle of Youth, Cuba. Foureye butterflyfish were swimming together
in associations of 10 to 34 individuals throughout a survey carried out on spur and groove
habitat, in July, 2014. This species is commonly observed single or in pairs in the Caribbean
coral reefs, tending to contribute significantly to the reef fish abundance in the region. We
consider important to record this particular behavior, despite we are unable to explain the
causes with the current available data.PublishedReferee
International Hydrological Programme: 28th IHP Regional Steering Committee Meeting for Asia and the Pacific (RSC–AP) 24–25 October 2021 Hanoi, Viet Nam.
No full textFinal Report of the 28th IHP Regional Steering Committee Meeting for Asia and the Pacific held in Hanoi, Viet Nam, 24-25 November 2021.OPENASFA INPUTPublishedNot Know
Diagnose rapide et estimation de la production du barrage de Boukourdane.
No full textPour évaluer la qualité d'un milieu aquatique, les scientifiques utilisent des indices basés sur la physico-chimie, les algues phytoplanctoniques, et les invertébrés. Dans certains cas ils utilisent les poissons ou « indice poisson » qui prend en considération les communautés de poissons comme finales indicateurs biologiques et intégrateurs finals. Dans ce travail, la méthode de « diagnose rapide », mise au point par le CEMAGREF en 1990, et qui a été adaptée en 2002 par Boudjenah aux conditions algériennes, qui a été appliqué, à des données et résultats de travaux réalisés par d’autres chercheurs universitaires au niveau du Barrage de BOUKOURDANE, récoltées dans la bibliographie. La méthode de diagnose rapide, prend en considération les paramètres physico-chimiques de l'eau, du sédiment et d'une partie des peuplements biologiques (phytoplancton), ces paramètres sont ensuite traduits en indices basés sur la situation trophique des compartiments de l'écosystème aquatique. Le calcul des indices nous permet de situer ensuite le plan d'eau sur la gamme des niveaux trophiques : oligotrophes, mésotrophes, eutrophes. (Barbe et al, 1990). Ce classement donne enfin la possibilité d'estimer la production du barrage de BOUKOURDANE afin de prévoir et d'optimiser son exploitation.An index based on physico-chemical, fish (fish index), invertebrates, algae, or phytoplankton has been used to evaluate the quality of an aquatic environment. The fish community is considered as the trophic chain's ultimate integrator in the fish index. The "rapid diagnosis" method developed by CEMAGREF in 1990 and adapted to the Algerian condition by Boudjenah in 2002 is presented in this work for the first time, and for the second time, the theoretical production evaluation method has been applied to the data collected from the bibliography. This index's analysis helps us to position the lake's trophic level inside the range of trophic levels, including oligotrophic, mesotrophic, and eutrophic (Barbe et al, 1990). With the help of this categorization, we can finally plan and maximize the utilization of Lake BOUKOURDANE by calculating its productivity.PublishedReferee
Gestión del riesgo por tsunami y pérdida de contención de hidrocarburos y sustancias peligrosas asociado a actividades marítimas
No full textLas actividades marítimas desempeñan un papel importante en el desarrollo humano, puesto que proporcionan una importante fuente de ingresos y de empleo. Además, muchos habitantes se concentran en las zonas costeras dependiendo de los servicios del mar, convirtiéndose él mismo en un recurso valioso el cual debe protegerse para aprovechar plenamente sus beneficios; de ahí que sea necesario contar con actividades marítimas apropiadas y una infraestructura de transporte marítimo segura, protegida, eficiente y respetuosa con el ambiente.PublishedNot Know
GenOcean Campaign Identity.
No full textGenOcean instils a feeling of unity - it's not them and us - we are all in this together. Connecting with the audience, gaining their trust, and allowing them to seamlessly collaborate is essential. But to connect, we have to be on the same wavelength. This campaign identity guide serves as the starting point to create a unified, inspiring and determined campaign that aims to inspire everyday actions to restore and protect the ocean. The following pages contain inspiration, guidelines, and handy tips to communicate our values, realize our vision, and reinforce the GenOcean campaign. Thank you for helping achieve the GenOcean mission to restore and protect the ocean. Welcome to GenOcean.Government of JapanFrom the People of JapanUniversity of Education, Culture, Sports, Science and Technology, JapanOPENASFA INPUT
For bibliographic purposes, this publication should be cited as follows:
IOC-UNESCO. GenOcean Campaign Identity. Paris. 2022. 72 pp. (The Ocean Decade Series, 33).PublishedNot Know
Особенности распределения и суточных вертикальных миграций тихоокеанских лососей в приалеутских водах Тихого океана в зимний период 2022 г. по данным гидроакустических измерений
No full textThe article provides the acoustic assessments of the population and biomass of Pacific salmon in the Aleutian waters of the Pacific Ocean in the winter 2022. Spatial distributions of the main salmon species were obtained, daily vertical migrations were considered.В работе представлены акустические оценки численности и биомассы тихоокеанских лососей в приалеутских водах Тихого океана в зимний период 2022 г. Были получены пространственные распределения основных видов лососей, рассмотрены их суточные вертикальные миграции.PublishedNon Referee
Biological Parameters of the Red Pandora (Pagellus bellottii Steindachner, 1882) in Soumbedioune, Senegal, West Africa
No full textNew information on the reproductive biology of Pagellus bellottii (Steindachner, 1882) a Sparid fish in Senegalese waters is provided in this study. Little aspects on the reproductive biology of this fish are reported in Senegal, West Africa. The objective of the study is to examine the length-weight relationship, the condition factor and the reproductive parameters of P. bellottii from the Senegalese waters. A total of 360 specimens (males = 197 and females = 163) bought from fishermen were used for the study. Specimens were collected monthly (thirty individuals per month) from October 2019 to September 2020 from Soumbedioune of Western part of Dakar, Senegal. Each individual was measured with an ichthyometer and weighed with a precision balance. For dissected individuals, sex was determined by macroscopic observation of the gonads. The gonads were extracted to calculate the Gonadosomatic Index. The length-weight relationship gave a negative allometric growth for both sexes. The value of “k” being greater than 1; the species was in good condition in this environment. The sex ratio (1:0.82) was favourable to males. The reproductive period was from March to June with a spawning peak in April for both sexes. Males and females had size at first sexual maturity at 178- and 180-mm total length, respectively. Males matured at smaller sizes than females. The data obtained in this study on some aspects of the reproductive biology of P. bellottii will be essential for better management of fish stocks in Senegal and in the sub-regionPublishedReferee