Dynamics of production and mortality of Aurelia SP. in thau lagoon, northwerstern Mediterranean

Dissertação de mestrado, Biologia Marinha, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2015

Sedimentology of the Sixteen Mile Creek Lagoon, Niagara Peninsula, Ontario, Canada

The effec s of relative water level changes in Lake Ontario were detected in the ysical, chemical and biological characteristics of the sediments of the Fifteen, Sixteen and Twenty Mile Creek lagoonal complexes. Regional environmental changes have occurred resulting in the following sequence of sediments in the three lagoons and marsh. From the base up they are; (I) Till,(2) Pink Clay, (3) Bottom Sand, (4) Gyttja, (5) Orange Sandy Silt, (6) Brown Clay and (7) Gray Clay. The till was only encountered in the marsh and channel; however, it is presumed to occur throughout the entire area. The presence of diatoms and sponge spicules, the vertical and ongitudinal uniformity of the sediment and the stratigr ic position of the Pink Clay indicate that it has a glacial or post-glacial lacustrine origin. Overl ng the Pink Clay or Till is a clayey, silty sand to gravel. The downstream fining and unsorted nature of this material indicate that it has a fluvial/deltaic origin. Water levels began rising in the lagoon 3,250 years ago resulting in the deposition of the Gyttja, a brown, organic-rich silty clay probably deposited in a shallow, stagnant environment as shown by the presence of pyrite in the organic material and relatively high proportions of benthic diatoms and grass pollen. Increase in the rate of deposition of the Gyttja on Twenty Mile Creek and a decrease in the same unit on Sixteen Mile Creek is possibly the result of a capture of the Sixteen Mile Creek by the Twenty Mile Creek. The rise in lake level responsible for the onset and transgression of this III unit may have been produced by isostatic rebound; however, the deposition also corresponds closely to a drop in the level of Lake Huron and increased flow through the lower lakes. The o ange Sandy Silt, present only in the marsh, appears to be a buried soil horizon as shown by oxidized roots, and may be the upland equivalant to the Gyttja. Additional deepening resulted in the deposition of Brown Clay, a unit which only occurs at the lakeward end of the three lagoons. The decrease in grass pollen and the relatively high proportion of pelagic diatoms are evidence for this. The deepening may be the result of isostatic rebound; however, the onset of its deposition at 1640 years B.P. is synchronous in the three lagoons and corresponds to the end of the subAtlantic climatic episode. The effects of the climatic change in southern Ontario is uncertain. Average deposition rates of the Brown Clay are similar to those in the upper Gyttja on Sixteen Mile Creek; however, Twenty Mile Creek shows lower rates of the Brown Clay than those in the upper Gyttja. The Gray Clay covers the present bottom of the three lagoons and also occurs in the marsh It is inter1aminated wi sand in the channels. Increases in the rates of deposi ion, high concentrations of Ca and Zn, an Ambrosia rise, and an increase in bioturbation possibly due to the activities of the carp, indicate th this unit is a recent deposit resulting from the activities of man.

Hydrogeology,Stratigraphy and evolution of the Palaeo-Lagoon (kole land basin ) in the central Kerala coast, India

The present investigation on " Hydrology, stratigraphy, and evolution of the palaeo-lagoon (Koleland basin)in the Central Kerala coast, India" is an integrated approach based on hydrogeological,geophysical,hydrochemical and stratigraphic aspects.A strong scientific data base of the study area is generated using interpretation of well observation and water quality analysis. The salient findings of the present study are given to provide a holistic picture on the hydrogeology (including groundwater resource and its quality),stratigraphy and evolution of the palaeo-lagoon

Studies on the ecology and productivity of saline lagoon

A perusal of the literature shows that most of the earlier works on the ecology and productivity from the Indian waters have been confined to the estuarine ecosystms and contiguous neritic and oceanic water bodies. Although some information is available on certain aspects of the envirornental parameters from the ‘coastal lagoon ecosystem‘, there is hardly any indepth study on the ecological and productivity problems from "derlict saline lagoonal environment" in India . In view of this, the researcher undertook a study on the subject "ecology and productivity“ of a typical “coastal saline lagoon"(Pilla;headan lagoon) situated along the southeast coast of India for a period of two years!-N11, 1982 to June, 1984) , and the results of the investigations are embodied in the present thesis entitled "studies on the ecology and productivity of saline lagoon‘.

Al agua patos.

Seleccionado en la convocatoria: Ayudas para proyectos de temática educativa, Gobierno de Aragón 2009-10

Al agua patos : la actividad acuática terapéutica y recreativa en un centro de educación especial.

Seleccionado en la convocatoria: Ayudas para proyectos de temática educativa, Gobierno de Aragón 2008-09

Ànecs en corral estrany : una experiència sense pretencions. 'Patos en corral estraño : una experiencia sin pretensiones'.

Se presenta una experiencia de ambientalización de un Instituto de Educación Secundaria ubicado en el barrio de San Blas de Madrir. Las dificultades se derivan del entorno del IES es el factor que hace destacar esta experiencia, así como la implicación del profesorado y del alumnado en un proceso de educación ambiental.

Avaliação institucional : impactos no currículo dos cursos de licenciatura plena das faculdades integradas de patos - pb

O presente trabalho dissertativo objetivou levantar e descrever os impactos causados pela Avaliação Institucional do MEC no âmbito do currículo dos cursos superiores de Licenciatura Plena, tomando-se como objeto empírico de verificação as Faculdades Integradas de Patos – FIP. Em linhas gerais, o referido trabalho evidencia o histórico da avaliação institucional brasileira, identificando os modelos avaliativos: PAIUB, ENC e SINAES, levando-se em consideração as ideias conceituais de teóricos, como: Leite (1997), Brito (2006), Buarque (2005), Dias Sobrinho (2000), Balzan (2005), Catani (1997), Gadotti (2005), Trindade (1999), dentre outros. Apresenta a organização curricular dos Cursos de Licenciatura Plena das Faculdades Integradas de Patos que são: Geografia, História, Letras e Pedagogia, identificando cada curso a partir de sua matriz curricular, destacando a proposta do Plano de Desenvolvimento Institucional e do Plano Pedagógico Institucional da IES. Por último, mostra os resultados da pesquisa de campo que foi desenvolvida a partir da aplicação de questionários direcionados aos segmentos dos Docentes, Coordenadores de Curso, Coordenações Acadêmicas e Membros da Comissão Própria de Avaliação das FIP. Com base nos resultados da pesquisa de campo, os Cursos de Licenciatura Plena das FIP nesta última década, sofrerem e vem sofrendo os impactos das avaliações institucionais do MEC. Tais impactos configuramse a partir de perspectivas mais positivas do que negativas, pois estes cursos desde que começaram a participar do processo avaliativo do MEC, que se veem envolvidos em processos de auto-avaliação, tanto interno como externo, apresentando melhorias significativas.

Ensino jurídico e cidadania : uma investigação acerca do PRAJUR (Núcleo de Prática Jurídica) das faculdades integradas de PATOS (FIP)

Esta dissertação aborda o tema do ensino jurídico e cidadania e da função social do Núcleo de Prática Jurídica(PRAJUR) da FIP-Faculdades Integradas de Patos-PB. Para analisar o ensino jurídico e cidadania do PRAJUR/FIP, parte-se da Resolução nº 09/2004/MEC que sucedeu a Portaria nº 1.886/94/MEC, onde instituiu a implantação de escritórios jurídicos em todos os cursos de Direito, na busca de melhor delinear o conhecimento prático dos acadêmicos. Os objetivos da pesquisa foram: descrever que através do conhecimento tem-se uma forma de diminuir a distância entre os níveis sociais e um caminho à buscar cidadania pela educação, refletir sobre o acesso à justiça como um direito de cidadania e analisar a função social do PRAJUR/FIP no acesso à justiça. A coleta dos dados foi realizada através de bibliografia, doutrina, dados documentais e aplicação de questionários. A dissertação foi organizada de forma a contemplar educação jurídica e efeitos práticos no exercício da cidadania onde no primeiro capítulo discorre-se sobre a educação e suas transversalidades aplicáveis atualmente na sociedade. No segundo capítulo abordou-se além da função social do PRAJUR/FIP no acesso à justiça, apresenta-se os dados coletados junto aos educadores em forma de entrevista do PRAJUR/FIP, e em forma de pesquisa dados coletados de exalunos e usuário. Finalmente, no terceiro capítulos aborda-se a evolução dos cursos de Direito e a formação acadêmica do educando.

Geophysical characterization of the complex dynamics of groundwater and seawater exchange in a highly stressed aquifer system linked to a coastal lagoon (SE Spain)

Anthropogenic pressure influences the two-way interactions between shallow aquifers and coastal lagoons. Aquifer overexploitation may lead to seawater intrusion, and aquifer recharge from rainfall plus irrigation may, in turn, increase the groundwater discharge into the lagoon. We analyse the evolution, since the 1950s up to the present, of the interactions between the Campo de Cartagena Quaternary aquifer and the Mar Menor coastal lagoon (SE Spain). This is a very heterogeneous and anisotropic detrital aquifer, where aquifer–lagoon interface has a very irregular geometry. Using electrical resistivity tomography, we clearly identified the freshwater–saltwater transition zone and detected areas affected by seawater intrusion. Severity of the intrusion was spatially variable and significantly related to the density of irrigation wells in 1950s–1960s, suggesting the role of groundwater overexploitation. We distinguish two different mechanisms by which water from the sea invades the land: (a) horizontal advance of the interface due to a wide exploitation area and (b) vertical rise (upconing) caused by local intensive pumping. In general, shallow parts of the geophysical profiles show higher electrical resistivity associated with freshwater mainly coming from irrigation return flows, with water resources mostly from deep confined aquifers and imported from Tagus river, 400 km north. This indicates a likely reversal of the former seawater intrusion process.

Anthropogenic nutrient sources and loads from a Mediterranean catchment into a coastal lagoon: Mar Menor, Spain

The Mar Menor is a coastal lagoon increasingly threatened by urban and agricultural pressures. The main watercourse draining into the lagoon is the Rambla del Albujón. A fortnightly campaign carried out over one annual cycle enabled us to characterize the treated urban sewage effluents and agricultural sources which contribute to the nutrient fluxes in the watercourse. Multivariate analysis provided information for establishing chemical signatures and for assessing the relative influence of the various sources on the water quality at the outlet. Mass balances were used to examine net gains and losses, and cross-correlations with rainfall to analyze climatic influence and control factors in the trends of the nutrient flux. The rainfall pattern was significantly cross-correlated with nitrate and phosphorus fluxes from agricultural sources, while fluctuations in the resident population explained the phosphorus flux trend in urban sources. 50% of dissolved inorganic nitrogen was from agricultural sources, while 70% of total phosphate and 91% of total organic carbon were from urban point sources. The net amounts of all the nutrients fell as a result of plant uptake and/or denitrification in the channel. The control of urban point sources (phosphorus-enriched) is suggested as a promptly action for improving the health of the coastal lagoon.