Sternes réprises en Côte d'Ivoire au cours des derniers hivernages des années 1969-1970-1971-1972-1973

Data are reported on: (1) date and place of ringing the juveniles and adults of the sea bird of the genus Sterna in Côte d'Ivoire, and (2) date and place of recapture during the winter periods of 1969, 1970, 1971, 1972, 1973.

Zooplancton et micronecton dans la région du Dôme d'Angola en février-mars 1971 et rélation avec les thons

Diurnal variations and geographic distribution of zooplankton and micronekton are studied in the Angola Dome. The small zooplankton species (Copepodids, Copepods, Amphipods, Ostracods, Chaetognaths, etc.) undertake vertical migrations within a 100 m water layer. Most of the micronekton species are below this layer during the day and move towards the surface during the night. The whole region prospected is rich in zooplankton and micronekton species that are present in the upper 100 m layer during the day. Only the South-West region is poor. On the contrary, this latter region is abundant in species that migrate below this layer during the day. The authors think there are 3 main difficulties in establishing good relationships between micronekton and tunas distribution: 1 - inability of micronekton nets to catch the tunas preys; 2 - the great diversity of tunas food; and 3 - the too large delay between micronekton studies and those of stomach contents of tunas.

Variabilité, circulation et chlorophylle dans la région du Dôme d'Angola en février-mars 1971

In February-March 1971 the hydrological conditions off Angola did not display the thermal dome mapped by Mazeika's averages (1967). Cold water cells observed are connected at the surface to a sinuous boundary between low-salinity coastal waters and high-salinity tropical oceanic waters. That boundary coincides rather regularly with an area where trades and SW winds alternate; photosynthesis growths rapidly in a thermoclinal layer that rises until 10 m of the surface but never outcrops. Below a poor and permanent homogeneous surface layer, chlorophyll concentrations show a distribution which is typical of divergence areas. Geostrophical and measured currents show off a transient process in horizontal and vertical movements, however the general curvature of the circulation is propitious to upwelling. Oxygen oversaturations of about 110%, suggest a moderate potential primary production which confirms slowness and alternation of movements. Also, the regular range of the various chemical and biological levels and moderate chlorophyll concentrations suggest an ecosystem where nutrients supply rapidly equilibrate phytoplankton consumption and not at all a 'phytoplankton bloom' area as that which exists in coastal upwelling. Values of Richardson's number show that instability becomes visible at the bottom of the euphotic layer. An evaluation of the vertical motion is inferred by the peculiar distribution and diurnal alternance of the winds shows that 'doming' structures may be sustained by local meteorological events.

Sixth Annual Report for the year ended 31st March, 1971

This is the sixth Annual report of the Cumberland River Authority on information of its activities and responsibilities on river management in its area between the beginning of April 1970, to the end of March 1971. The report contains 5 main sections on water resources, land drainage, fisheries, pollution, and finally the expenditure and income for the 12 month period. The first area that the report deals with is water resources, which includes periodical surveys, hydrometric schemes, acceptable flows, conservation works and a review of rainfall and river flow. The section on land drainage looks at work on improvement schemes, floods, charges and information on maintenance work carried out on rivers including Wampool, Waver, Derwent, Eden, Mite, Bleng, Annas and Irt. The fisheries section covers 5 districts of the River Eden, Esk, Ellen, Derwent and South West Cumberland. It includes angling information and a general report for salmon and sea trout, brown trout and freshwater fish. Fish disease and fish hatchery are also covered as well as fisheries protection and licence duties. The fourth section on pollution deals with water quality, and the results of samples taken from rivers Eden, Eamont, Petteril, Caldew, Calder, Irt, Derwent, Ehen, Ellen, Wampool and Waver are also given. It also covers information on sewage and trade effluents. The River Authorities preceded the Environment Agency which came into existence in 1996.

River Dart Scale Reading Investigation 1971

This is the River Dart Scale Reading Investigation Report on the 1971 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. In 1967 the final report on a five-year scale reading programme was summarised, at the time it was considered sufficient information to help with restocking programmes and the management of salmon population. But a further scale reading programme was started in an attempt to monitor changing patterns in salmon runs that may be caused by the new influences. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All are summarized in tables, and figures are also included plotting weight distributions for each age classes and frequency distributions.

River Exe Scale Reading Investigation. 6th Annual Report for the 1971 Season.

This is the 6th Annual Report of the Rive Exe Scale Reading Investigation for the 1971 Season by the Devon River Authority. The object of this investigation is to examine, by means of scale reading, the biology of age classes of the salmon population of the River Exe. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.

Revista Brasileira de Estudos Pedagógicos: mapeamento e problematização do conceito de ciência na pesquisa educacional (1944-1971)

Nos primeiros anos em que a pesquisa educacional foi sistematizada, a Revista Brasileira de Estudos Pedagógicos foi o principal meio de divulgação do campo educacional e um importante instrumento de debate sobre a política em torno da ciência, da pesquisa educacional e da prática educativa. A revista continua sendo um órgão oficial do governo federal e de divulgação das ações de um instituto criado com o objetivo de difundir pesquisas: o Instituto Nacional de Estudos Pedagógicos (Inep). Naquele primeiro momento o Inep esteve a cargo de dois importantes educadores: Manuel Bergström Lourenço Filho e Anísio Spínola Teixeira, que orientaram o desenvolvimento da pesquisa em educação. Estes personagens se envolveram numa bandeira política e epistemológica e os artigos da revista ressaltavam suas ideias. O objetivo desta dissertação é identificar qual conceito de ciência estava presente quando a pesquisa educacional brasileira antes da criação dos cursos de pós-graduação. Foram selecionados 37 artigos entre os anos de 1944 e 1971. Estes artigos foram analisados com base nas concepções epistemológicas e diante da linha teórica da história dos conceitos. Como resultado desta pesquisa foi verificado que não houve dominância de nenhuma concepção epistemológica, mas a maior parte foi considerada dentro da perspectiva historicista. Diferentemente do que era esperado, nos artigos que trouxeram um panorama sobre pesquisa e ciência, houve opiniões divergentes a dos diretores da revista, mas o pensamento deles é destacado, inclusive, justificando muitas das ações realizadas pelo instituto. Foram observados diversos aspectos associados ao conceito de ciência, entre eles a eleição de prioridades e a ênfase na pesquisa prática, com alguns autores buscando um caráter mais imediatista e metodológico e outros defendendo a prática com embasamento teórico, sob a perspectiva social. Além do empenho para que a produção de pesquisas fosse realizada nas universidades, com o aporte de condições necessárias e da discussão sobre cientificidade da pesquisa educacional. Após 1964, o periódico publicou artigos que abordavam a educação como investimento, inseridas na tendência tecnicista, onde a função da pesquisa seria detectar de que forma otimizar os custos e qual seria a forma de propaganda mais eficaz para aumentar o número de matrículas. Porém, a revista ainda contava com influência de Anísio Teixeira e mesmo durante a ditadura militar realizou críticas às ações de repressão aos institutos e centros de pesquisa. A publicação do pensamento destes pesquisadores na RBEP permitiu que muitas destas questões fossem ampliadas, alcançando um impacto maior na sociedade. A maior parte dos artigos expôs a opinião de cientistas renomados e dos principais funcionários do Inep sobre quais deveriam ser as prioridades da pesquisa educacional em prol do progresso do país. Muitas das reivindicações publicadas se tornaram conquistas mantidas atualmente