Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Infoteca-e (15) Autor ARAÚJO, J. D. M. (15) CORREIA, D. (12) SOUSA, J. A. de (7) NASCIMENTO, E. H. S. do (6) VIANA, F. M. P. (4) ANSELMO, G. C. (3) SANTOS, A. M. (3) BERTINI, C. H. C. de M. (2) BEZERRA, A. M. E. (2) CARVALHO, A. C. P. P. de (2) FREIRE, F. das C. O. (2) GADELHA, J. W. R (2) OLIVEIRA, A. E. R. (2) PIENIZ, V. (2) BESSA, M. C. (1) BRITO, E. S. de (1) CANUTO, K. M. (1) CARPANEZZI, A. A. (1) CARVALHO, P. E. R. (1) COELHO, P. J. de A. (1) Mais... Palavra-chave Eucalyptus spp (2) Fronteiras florestais (2) Mudas (2) Teste clonal (2) Tolerância à seca (2) Aclimatização (1) Aclimatização. (1) Agente etiológico (1) Alongamento (1) Banana cv Williams (1) Banana. (1) Cactos. (1) Cattleya Labiata (1) Cedro. (1) Cereus sp (1) Clones de eucalipto (1) Coastal region (1) Cost reduction. (1) Cultivo (1) Doenças de plantas (1) Mais... Tipo do documento Circular Técnica (INFOTECA-E) (5) Comunicado Técnico (INFOTECA-E) (3) Documentos (INFOTECA-E) (3) Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) (2) Folhetos (2) Ano 2023 (2) 2019 (1) 2018 (1) 2017 (1) 2014 (2) 2012 (4) 2011 (4) Mais... País Brazil (15) Idioma Português (15)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 238 Primeira ... 4 5 6 7 8 9 10 11 12 ... Última Use of Spirulina platensis in treatment of fish farming wastewater Rev. Ciênc. Agron. Nogueira,Sara Monaliza Sousa; Souza Junior,José; Maia,Hudson Damasceno; Saboya,Jefferson Pablo Sousa; Farias,Wladimir Ronald Lobo. ABSTRACT Each year, the amount of fish produced around the world increases, which contributes to several environmental impacts such as the disposal of effluents without treatment in the environment. This scientific work had as main objective the development of Spirulina platensis in fish effluents, a low cost medium for the production of biomass, in order to reduce the levels of some inorganic nutrients to reach the allowed parameters by the Brazilian environmental standards for effluent disposal and to enable reuse of the water. Nile tilapia (Oreochromis niloticus) fingerlings were produced in fresh water. The effluent generated by the culture was transferred to a pool where seawater was added until the salinity of 10 ‰ was reached. A strain of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Oreochromis niloticus; Microalgae; Cyanobacteria; Bioremediation; Nutrients. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400599 Valorisation des rejets urbains et thermiques en zone littorale - Production primaire ArchiMer Bazzon, H.; Lepailleur, M.; Rogger, M.. Discharges of urban sewage water and waste heat from industries or power plants can be used in modern saltwater aquaculture. Urban sewage water diluted to 30 % in seawater which temperature is increased of 10 to 15° C gives a primary productivity equal to the produc­tivity of a standard culture medium. That bio-treatment which includes the addition of calories to the seawater, eliminates up to 90 % of the phosphorus and the nitrates. Tipo: Text Palavras-chave: Eau résiduaire urbaine; Calories; Algues marines; Aquaculture; Nutrients; Urban sewage water; Calories; Marine algae; Aquaculture; Nutrients. Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41660/40869.pdf Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae) RChHN MUÑOZ,VERÓNICA; HERNÁNDEZ-GONZÁLEZ,MARÍA C.; BUSCHMANN,ALEJANDRO H.; GRAHAM,MICHAEL H.; VÁSQUEZ,JULIO A.. Vegetative growth and fertility of kelp gametophytes are thought to be antagonistic, such that most successful kelp recruitment is assumed to result from fertilization of single oogonia released from unicellular female gametophytes. We used laboratory culture experiments to study the effect of temperature and nutrient addition on the per capita production of oogonia and sporophytes from Macrocystis pyrifera female gametophytes. Our results indicate that individual multicellular female gametophytes can give rise to more than one oogonium and that per capita oogonia production significantly increases with the enhancement of culture conditions (i.e., decreased temperature and increased nutrient concentration). Furthermore, the production of multiple oogonia... Tipo: Journal article Palavras-chave: Gametophytes; Macrocystis pyrifera; Nutrients; Oogonia production; Sporophyte production; Temperature. Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400007 Variation in the composition of carbohydrates in the Dona Paula Bay (west of India) during May/June 1998 ArchiMer D'Souza, F; Bhosle, Nb. Suspended particulate material was analysed for particulate carbohydrate concentration and composition and for the bulk parameters: suspended particulate matter, chlorophyll a, particulate organic carbon, particulate organic nitrogen and particulate proteins. Chlorophyll a concentrations increased from May 7 to 15 due to the development of a small scale bloom of diatom Navicula sp. and decreased for the remaining period after the premonsoon rain on 16 and 17 May. Concentrations of particulate organic carbon, organic nitrogen, carbohydrates and proteins increased with the increase in chlorophyll a concentration. Together particulate protein-carbon and carbohydrate-carbon accounted for 10 to 30% of the organic carbon. Glucose contributed 26 to 81% to the... Tipo: Text Palavras-chave: Hydrates de carbone; Côte de l’Inde; Nutriments; Matière particulaire en suspension; Carbohydrates; India coast; Nutrients; Suspended particulate matter. Ano: 2001 URL: http://archimer.ifremer.fr/doc/00322/43351/42862.pdf Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Infoteca-e SHIFT PROJECT ENV 45 (Manaus-AM).. This project has by objective the quantification of water and nutrient fluxes in an experimental plantation, which is composed of different monoculture and polyculture systems with mainly perennial crops, as well as in primary and secondary forest at EMBRAPA-CPAA (Manaus, AM, Brasil). The flux measurements are expected to provide information about the efficiency with which the different land use systems exploit the available resources (water, nutrients) on the infertile soils of the area and minimize unproductive losses, e.g., through leaching. Efficient resource utilization is seem as a procondition of sustainable land use on this site. Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Agrofloresta; Brasil; Amazonas; Manaus; Tropical rain forest; Água; Cultivo Multiplo; Floresta Tropical Úmida; Nutriente; Solo; Uso da Terra; Agroforestry; Land use; Multiple cropping; Nutrients; Soil; Water. Ano: 1996 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/668143 Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Infoteca-e SHIFT PROJECT ENV 45.. This second annual report of the project summarizes the activities between January and December 1996. During this year, the project left the preparotory stage of purchasing, importing and installing equipment and entered into the stage of routine data collection and analysis.The report is divided into two parts. In the main part, the project team is presented and its acitivities during the year 1996 are briefly summarized. The annexes give detailed accounts of selected research acitivities of the project. Despite numerous problems, all project activities were in principle successful, and there were no major changes to the time plan of the project. The root distribution studies were completed. Significant progress was made in soil physical studies, soil... Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Area abandonada; Agrofloresta; Fluxo; Brasil; Amazonas; Tropical rain forest; Agroforest; Fluxes; Analysis; Água; Análise; Conservação do Solo; Floresta Tropical Úmida; Nutriente; Environmental degradation; Nutrients; Soil conservation; Water. Ano: 1997 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667417 Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Infoteca-e SHIFT PROJECT ENV 45 (Manaus-AM).. This is the third annual report of the project summarizing the results of 1997. The results of the biomass determination and nutrient uptake are included which were conducted during 1996/97. First results from stand hydrology (stemflow, throughfall) and soil nitrogen dynamics are incorporated. The report is devided into two parts. In the main part, the project team is presented and is activities throughout the year 1997 are briefly summarized. The annexes give detailed information on selected research activities of the project. The research programme could be conducted according to the schedule outlined in previous report. This detailed and integrated analyses of the soil nutrient and water dynamics is yet to be done. This will involve mathematical... Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Brasil; Amazonas; Manaus; Tropical rain forest; Água; Balanço Hídrico; Biomassa; Floresta Tropical Úmida; Nutriente; Solo; Transporte de Nutriente; Uso da Terra; Biomass; Land use; Nutrient uptake; Nutrients; Soil; Water; Water balance. Ano: 1997 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667941 Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Infoteca-e SHIFT PROJECT ENV 45/2.. In this study, we present the effects of different fruit and timber tree species in a multistrata agroforestry system in comparison to secondary vegetation and primary forest sites on inorganic and organic P pools of a Ferralsol in the Amazon basin. The S pools were also assessed, but could not be presented here due to the length of this contribution. Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Agrofloresta; Brasil; Tropical rain forest; Água; Floresta Tropical Úmida; Nutriente; Solo; Uso da Terra; Amazonia; Agroforestry; Land use; Nutrients; Soil; Water. Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/666355 Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Infoteca-e SHIFT PROJECT ENV 45/2.. The experiments started during the first year of the second phase of this project were continued, such as studies about the effect of trees on soil phosphorus and sulfur abailability, dissolved organic nutrients in rainfall, throughfall, stemflow and soil solution. Additionally, we focussed on the effects of cover crops on tree nutrition, soil nutrient and water dynamics. Soil nitrogen and phosphorus uptake was investigated using different N-15 and P-32 tracer experiments. The fate of fertilizer nitrogen was studied with N-15 labelled ammoniumsulfate in plant, soil, soil extracts and soil solution. In laboratory incubations, the effect of leaf quality on decomposition and incorporation of nutrients into soil organic matter was studied as affected by soil... Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Brasil; Amazonas; Manaus; Tropical rain forest; Água; Floresta Tropical Úmida; Nutriente; Solo; Uso da Terra; Land use; Nutrients; Soil; Tropical rain forests; Water. Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/669428 Water quality trading programs: A comparison between the Northern and Southern Hemispheres AgEcon Greenhalgh, Suzie; Selman, Mindy. Water quality trading is continually being explored and implemented to improve water quality in many parts of the world. They are being used to cost-effectively reduce point and/or non-point source obligations to meet water quality goals such as nutrient discharge limits. A comparison between evolving trading programs in New Zealand and some in North America illustrate a number of differences as well as similarities in terms of the successes and hurdles. These can be used to better design more effective programs. Tipo: Conference Paper or Presentation Palavras-chave: Water quality; Trading; Nutrients; Market-based; Non-point source; Point source; Environmental Economics and Policy. Ano: 2008 URL: http://purl.umn.edu/6028 When do phytoplankton blooms cause the most intense hypoxia in the northern Adriatic Sea? ArchiMer Legovic, T; Justic, D. Eutrophication of the northern Adriatic Sea was investigated using data on dissolved oxygen (DO) from 1911 to 1982. Beginning in the period 1955-1965, DO concentrations increased in the surface layer and decreased close to the bottom in all seasons except winter. These changes are attributed to an increase of the anthropogenic nutrient inflow. The occurrence of hypoxia near the bottom and its disappearance were investigated using the vertical distribution of DO on the transect from the Po delta to Rovinj during 1973. Horizontal distributions of DO close to the surface and near the bottom show prominent gradients from the Po delta towards the middle of the northern Adriatic Sea. Application of a simple box model indicates that phytoplankton blooms which... Tipo: Text Palavras-chave: Hypoxia; Phytoplankton blooms; Nutrients; Eutrophication; Adriatic Sea. Ano: 1997 URL: http://archimer.ifremer.fr/doc/00093/20451/18123.pdf WILD PINEAPPLE (ANANAS BRACTEATUS (LINDL.), VAR. ALBUS) HARVESTED IN FOREST PATCHES IN RURAL AREA OF VIÇOSA, MINAS GERIAS, BRAZIL: EXCELLENT SOURCE OF MINERALS AND GOOD SOURCE OF PROTEINS AND VITAMIN C Rev. Bras. Frutic. PAULA FILHO,GALDINO XAVIER DE; BARREIRA,TIBÉRIO FONTENELLE; FREITAS,GILBERTO BERNARDO DE; MARTINO,HÉRCIA STAMPINI DUARTE; SANT’ANA,HELENA MARIA PINHEIRO. ABSTRACT In the rural region of the municipality of Viçosa, Minas Gerais, forest patches are encountered and they present a great diversity of wild and edible fruit, where wild pineapple (Ananas bracteatus (Lindl.), var. albus) is one of those of greatest occurrence. Given that, little is known about the nutritional characteristics of this fruit, the present study aimed to investigate the physical and physic-chemical characteristics, chemical composition (titratable acidity, total soluble solids, pH, moisture content, ash, protein, lipids and dietary fiber), carotenoids (a-carotene, ß-carotene, ß-cryptoxanthin and lycopene), vitamin C (AA and DHA) by HPLC-DAD, vitamin E (a-, ß-, ?-, d-, tocopherols and tocotrienols) by HPLC-fluorescence, and minerals (P,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Wild fruit; Nutritional value; Vitamins; Nutrients. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000300703 Winter cover crops affecting physical and chemical soil attributes in a commercial vineyard Ciência Rural Veiga,Milton da; Feldberg,Nelson Pires; Nava,Gilberto; Bettoni,Jean Carlos. ABSTRACT: Cover crops may have direct or indirect effects on the physical and chemicalsoil attributes; these cropsplay a key role in the cycling of nutrients in the soil and add labile organic carbon, bringing economic and environmental benefits to the system. To study the effect of cover crops on the physical and chemical properties of an Oxisol, a three-year experiment was conducted in a commercial vineyard located at Epagri’s Experimental Station in Videira, SC, Brazil. Different winter species (white clover, red clover, common vetch, turnip, corn spurrey, black oat, rye, and ryegrass) were sown in addition to treatments with manual weeding or mechanical mowing. Certain chemical and physical attributes of soil were determined in samples collected... Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic matter; Nutrients; Bulk density; Soil porosity; Vitis spp. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200252 Zinc Fertilization Effects on Seed Cadmium Accumulation in Oilseed and Grain Crops Grown on North Dakota Soils Chilean J. Agric. Res. Rojas-Cifuentes,Gonzalo A; Johnson,Burton L; Berti,Marisol T; Norvell,Wendell A. ^len^les Tipo: Journal article Palavras-chave: Soil series; Seed; Uptake; Nutrients; Contamination. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100019 Вертикальное распределение хлорофилла и флуоресценции в Черном море IBSS Repository Финенко, З. З.; Чурилова, Т. Я.; Ли, Р. И.. На основании обобщения большого количества данных, полученных в результате исследований многих ав­торов, установлены временные и региональные изменения вертикального распределения концентрации хло­рофилла, флуоресценции. В холодный период (с декабря по март), когда вертикальное перемешивание по­верхностного слоя происходит достаточно активно, концентрация хлорофилла в глубоководных районах мо­ря распределена относительно равномерно в слое до 40 - 50 м. В теплый период (с мая по октябрь), после установления температурной стратификации в верхнем слое, преобладают профили с одним максимумом хлорофилла. Глубина расположения максимума хлорофилла меняется в широких пределах и зависит от его концентрации. Увеличение содержания хлорофилла в планктоне приводит к... Tipo: Journal Contribution Palavras-chave: Черное море; Флуоресценция; Хлорофилл а; Фитопланктон; Биогенные вещества; Свет; The Black Sea; Chlorophyll a; Fluorescence; Phytoplankton; Nutrients; Irradiance Irradiance Nutrients (mineral) Phytoplankton Fluorescence Chlorophylls Fluorescence Phytoplankton Chlorophylls http://aims.fao.org/aos/agrovoc/c_10935 http://aims.fao.org/aos/agrovoc/c_13344 http://aims.fao.org/aos/agrovoc/c_1577. Ano: 2005 URL: http://repository.ibss.org.ua/dspace/handle/99011/189 Сезонная изменчивость отношения органического углерода к хлорофиллу «а» и факторы, ее определяющие в фитопланктоне прибрежных вод Черного моря IBSS Repository Стельмах, Л. В.; Бабич, И. И.. На основе данных, полученных на пяти станциях в прибрежных поверхностных водах Черного моря (в районе Севастополя) в 2002 – 2003 гг., представлена сезонная динамика отношения С:хл “a” в нано- и микрофитопланктоне. В течение года этот показатель изменялся приблизительно на порядок. Наибольшие значения отношения (400 – 500) были получены в летний период (в июле), когда интенсивность солнечной радиации достигала максимума, а концентрация нитратов снижалась до аналитического ноля. Наименьшие величины (30 – 50) отмечены зимой при минимальных интенсивностях солнечной радиации и относительно высоких (4 – 25 мкМ) концентрациях нитратов. Представлены регрессионные зависимости, отражающие комбинированное действие света, температуры, биогенных веществ и видового... Tipo: Journal Contribution Palavras-chave: Хлорофилл "a"; Органический углерод; Фитопланктон; Свет; Биогенные вещества; Черное море; Сhlorophyll "a"; Phytoplankton; Organic carbon; Light; Nutrients; Black Sea Phytoplankton Organic carbon Light Nutrients (mineral) Light Phytoplankton http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_13344. Ano: 2006 URL: http://repository.ibss.org.ua/dspace/handle/99011/315 Сезонная изменчивость скорости роста фитопланктона в прибрежных водах Чёрного моря (район Севастополя). IBSS Repository Стельмах, Л. В.; Куфтаркова, Е. А.; Бабич, И. И.. На основе данных, полученных на трёх станциях в прибрежных поверхностных водах Чёрного моря (в районе Севастополя) в 2006 – 2007 гг., представлена сезонная динамика удельной скорости роста фитопланктонного сообщества. В течение года этот показатель изменялся приблизительно на порядок. Максимальные значения (2.00 – 2.70 сутки-1) наблюдались в периоды весеннего и осеннего «цветения» воды, вызванного диатомовой водорослью Chaetoceros socialis. Минимальные величины (0.06 – 0.10 сутки-1) отмечены зимой, когда в планктоне доминировали два вида диатомовых водорослей Sceletonema costatum и C. socialis. Получены количественные зависимости между концентрацией нитратов и кремния, с одной стороны, и удельной скоростью роста фитопланктона, с другой. Основным фактором,... Tipo: Journal Contribution Palavras-chave: Фитопланктон; Скорость роста; Хлорофилл a; Биогенные вещества; Чёрное море; Phytoplankton; Growth rate; Chlorophyll a; Nutrients; Black Sea; Фітопланктон; Швидкість росту; Хлорофіл a; Біогенні сполуки; Чорне море. Ano: 2009 URL: http://repository.ibss.org.ua/dspace/handle/99011/843 Сезонные изменения скорости роста и лимитирование фитопланктона питательными веществами в прибрежных водах Черного моря в районе Севастополя IBSS Repository Стельмах, Л. В.; Губанов, В. И.; Бабич, И. И.. Исследована сезонная динамика скорости роста микро- и нанофитопланктона и ее зависимость от концентрации основных биогенных веществ в среде в прибрежных поверхностных водах Черного моря в районе Севастополя. Показано, что скорость роста фитопланктона лимитируется соединениями азота в течение большей части года. В холодный период (ноябрь – апрель), когда количество нитратов в воде было сравнительно высоким (1 - 10 мкМ), скорость роста микро- и нанофитопланктона определялась их концентрацией в соответствии с уравнением Михаэлиса-Ментен. В теплое время (май – октябрь) при более низких концентрациях нитратов в среде (в основном менее 1мкМ) скорость роста водорослей связана гиперболической зависимостью с содержанием аммония. Степень азотного лимитирования... Tipo: Journal Contribution Palavras-chave: Фитопланктон; Лимитирование; Биогенные вещества; Черное море; Phytoplankton; Limitation; Nutrients; Black Sea Nutrients (mineral) Phytoplankton Phytoplankton http://aims.fao.org/aos/agrovoc/c_13344. Ano: 2004 URL: http://repository.ibss.org.ua/dspace/handle/99011/135 Registros recuperados: 238 Primeira ... 4 5 6 7 8 9 10 11 12 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco