|
|
|
| Registros recuperados: 105 | |
|
|
| The ocean meteorological program of the Weather Bureau has two separate and distinct parts. First, there is the daily service by radio. Owing to the need for brevity, the radio reports contain a limited amount of essential information. The daily weather reports from ships and islands reveal the conditions over the ocean; when assembled on a map, including continental reports, they give a picture of weather conditions existing momentarily over a large region. A collection of observations is immediately returned to the mariner by radio broadcast so that he may draw his own weather map on shipboard. By this process, the weather at the earth's surface is mapped and much can be inferred as to conditions above the surface. Formation and movement of storms are... |
| Tipo: Book |
Palavras-chave: Instrument platforms; Meteorological instruments; Oceanographic instruments; Methodology; Standardization; Measurement; Climate; Climatology; Atmosphere-ocean system. |
| Ano: 1941 |
URL: http://hdl.handle.net/1834/5239 |
| |
|
|
| Pineda, S.E.; Aubone, A.; Brunetti, N.E.. |
| Beaks of Loliginid squids have very similar morphological features making identification of the species to be quite difficult. A new metodology to identify species from the relative growth of some parts of the beak is presented. Samples of Loligo gahi and Loligo sanpaulensiswere obtained from ten reserch cruises of RVS "Dr. Holmberg" and "Captain Oca Balda" and eight commercial landings at Mar del Plata Port during the period 1992-1993. The results obtained using the new metodology (Metric Discriminant Criterium)were compared with those resulting from the application of the Fisher's Lineal Discriminant Criterium. Both mantle length - rostral length and total weight - rostral length relationships, corresponding to each species were fitted. Either upper or... |
| Tipo: Journal Contribution |
Palavras-chave: Morphometry; Methodology; Growth curves; Methodology; Http://aims.fao.org/aos/agrovoc/c_12522. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/1961 |
| |
|
|
| The ocean meteorological program of the Weather Bureau has two separate and distinct parts. First, there is the daily service by radio. Owing to the need for brevity, the radio reports contain a limited amount of essential information. The daily weather reports from ships and islands reveal the conditions over the ocean; when assembled on a map, including continental reports, they give a picture of weather conditions existing momentarily over a large region. A collection of observations is immediately returned to the mariner by radio broadcast so that he may draw his own weather map on shipboard. By this process, the weather at the earth's surface is mapped and much can be inferred as to conditions above the surface. Formation and movement of storms are... |
| Tipo: Book |
Palavras-chave: Instrument platforms; Meteorological instruments; Oceanographic instruments; Methodology; Standardization; Measurement; Climate; Climatology; Ocean-atmosphere system. |
| Ano: 1938 |
URL: http://hdl.handle.net/1834/5238 |
| |
|
| |
|
| |
|
| |
|
|
| Kroeck, M.A.. |
| Los moluscos bivalvos son organismos sedentarios que establecen una relación íntima no sólo entre ellos, sino también con el espacio que ocupan y con sus condiciones fisicoquímicas. Sus poblaciones pueden ser hospedadoras de múltiples organismos patógenos (virus,bacterias, hongos, protistas y metazoos), cuya presencia es regulada eficazmente a niveles infra, meta y suprapoblacionales en ambientes silvestres, no provocando, salvo excepcionalmente, impactos severos. Los cultivos a escala comercial producen concentraciones de individuos, con la consiguiente alteración del medio y del equilibrio natural en la relación parásito-hospedador, generándose condiciones apropiadas para el desarrollo de enfermedades. Entre los años 1995 y 1996 se instala, en la zona... |
| Tipo: Theses and Dissertations |
Palavras-chave: Fishery biology; Marine molluscs; Parasitology; Protozoan diseases; Histopathology; Spatial distribution; Environmental conditions; Methodology; Examinations. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/5244 |
| |
|
|
| Bach, P.; Chauvelon, P.. |
| Daily growth increments (DGI) density - otolith radius relationship according to the von Bertanlanffy's growth model: application to Lutjanus sebae (Cuvier, 1828) in Seychelles. Often, age determination of fishes is conducted from several parts (scales and otoliths for teleost fishes, vertebrae, spine, opercular bones, ...) displaying seasonal marks (annuli) associated with growth checks, which can be used for the estimation of individual age. Since Panella's (1971, 1974) discovery of the daily growth increments (DGI) in the teleost otoliths, age determination with DGI method has been used more and more on larval stages of both temperate and tropical species and juvenile and adult individuals of, principally, snapper and grouper species. The age study of... |
| Tipo: Report |
Palavras-chave: Otolith reading; Age determination; Methodology; Growth; Lutjanus sebae. |
| Ano: 1993 |
URL: http://hdl.handle.net/1834/5119 |
| |
|
|
| The ocean meteorological program of the Weather Bureau calls in general for the making of but one regular observation a day, this, as well known, being made at noon· Greenwich mean time, (civil). However, in certain designated areas from which observations are transmitted by radiotelegraphy an additional regular observation is provided for at Greenwich midnight. Supplementing these regular observations are extra ones made under conditions of threatening or severe weather, gale and storm reports, and descriptive notes of weather experienced between observations, the lastnamed taking the form of a Daily Journal. The total requirements are such, however, as to make the smallest possible demands on observers consistent with the needs of the bureau in meeting... |
| Tipo: Book |
Palavras-chave: Instrument platforms; Meteorological instruments; Oceanographic instruments; Methodology; Standardization; Measurement; Climate; Climatology; Ocean-atmosphere system. |
| Ano: 1929 |
URL: http://hdl.handle.net/1834/5237 |
| |
|
|
| The Conference of Brussels, called in 1853, was the first International Maritime Conference ever held. It sponsored the idea that governments should foster systematic weather observations on ships, and should prepare and publish charts of the prevailing winds, ocean currents, average sea and air temperatures, and tracks of dangerous storms based on the additional data. With the introduction of radio and fast ships, weather information became of vital importance to safe and efficient ship operation. Many countries began regularly scheduled weather forecasts to ships in nearby waters. Today, weather forecasts as well as charts are prepared from data collected through ship observations. Forecasts of weather and sea conditions arc prepared for ship operation,... |
| Tipo: Book |
Palavras-chave: Instrument platforms; Meteorological instruments; Oceanographic instruments; Methodology; Standardization; Measurement; Climate; Climatology; Ocean-atmosphere system. |
| Ano: 1959 |
URL: http://hdl.handle.net/1834/5243 |
| |
|
| |
|
|
| Dia, M.; Wague, A.; Ghorbel, M.. |
| L’étude de la reproduction de Diplodus sargus cadenati, de la côte de Nouadhibou a porté sur 513 individus de longueurs à la fourche comprises entre 13,2 cm et 32,2 cm. Cette étude a montré que la période de ponte de cette espèce s’étend de janvier à avril, période où la température de l’eau est en moyenne de 18,4°c. La taille (L50) à la laquelle 50% des individus sont matures est de 21,47 ± 0,45 cm de longueur à la fourche (Lf) pour les mâles et de 20,79 ± 0,55 cm pour les femelles. L’étude de la sex-ratio n’a pas montré la dominance de l’un ou de l’autre sexe. |
| Tipo: Journal Contribution |
Palavras-chave: Animal physiology; Marine fish; Methodology; Reproduction; Sex ratio; Size-at-first-maturity; Spawning seasons; Statistical tables; Fishery biology; Marine fishes. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4490 |
| |
|
|
| The Conference of Brussels, called in 1853, was the first International Maritime Conference ever held. It sponsored the idea that governments should foster systematic weather observations on ships, and should prepare and publish charts of the prevailing winds, ocean currents, average sea and air temperatures, and tracks of dangerous storms based on the additional data. With the introduction of radio and fast ships, weather information became of vital importance to safe and efficient ship operation. Many countries began regularly scheduled weather forecasts to ships in nearby waters. Today, weather forecasts as well as charts are prepared from data collected through ship observations. Forecasts of weather and sea conditions arc prepared for ship operation,... |
| Tipo: Book |
Palavras-chave: Instrument platforms; Meteorological instruments; Oceanographic instruments; Methodology; Standardization; Measurement; Climate; Climatology; Ocean-atmosphere system. |
| Ano: 1954 |
URL: http://hdl.handle.net/1834/5241 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Bach, P.; Chauvelon, P.. |
| The age study of fishes using daily growth increments DGI observations is made from: 1- either the exhaustive determination of increments, 2- or the calculation of daily growth increments density for different otolith zones between the nucleus and the margin edge of otolith, the width of increments being presumed constant for each zone. To apply the first method, increments may be readable individually from the nucleus to the margin edge of otolith. This is a very time consuming operation. It can cause miscalculation of increments and errors of the age estimation. The second method, called "DGI density method" is based on the decrease of the increment width in relation to the slowing down of the growth phenomena. The more used approach according to this... |
| Tipo: Report |
Palavras-chave: LUTJANUS SEBAE; Age determination; Growth; Methodology; Otolith reading; Age determination; Growth; Methodology. |
| Ano: 1994 |
URL: http://hdl.handle.net/1834/1315 |
| |
|
|
| Angulo-Valdés, J. A.. |
| In this work the management effectiveness of a Cuban MPA is assessed using an interdisciplinary approach. A series of three hypotheses are tested to determine how effective the Punta Frances Marine Protected Area (PFMPA) has been in meeting the multiple objectives of conserving biological diversity and ecological integrity, while allowing for the development of economic opportunities for tourism, and satisfying the needs of local and distant human populations. A new typology of benefits derived from MPAs was produced to provide managers with a practical tool that enable them to: 1) identify the benefits at the early stages of MPA creation, 2) state MPA objectives in a clear and measurable way, 3) assess the effectiveness of their MPA in meeting... |
| Tipo: Theses and Dissertations |
Palavras-chave: Protected areas; Methodology; Abundance. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/5483 |
| |
|
| |
| Registros recuperados: 105 | |
|
|
|
