Algae Preservation
Mostrando 1-9 de 9 artigos, teses e dissertações.
-
1. Histosols in an Upper Montane Environment in the Itatiaia Plateau
ABSTRACT: Highland environments favor accumulation and preservation of soil organic matter (SOM) due to low temperatures, leading to the formation of Histosols. The Itatiaia National Park (INP), Rio de Janeiro, Brazil, offers conditions for preservation of SOM deposited over time, which has led to the formation of these soils. The objective of this study was
Rev. Bras. Ciênc. Solo. Publicado em: 15/12/2016
-
2. Estudo palinoestratigráfico e de petrografia orgânica do Cretáceo inferior da Bacia do Recôncavo / Palynostratigraphic and organic petrography studies of the Recôncavo basin early Cretaceous deposits
The present study was based on vertical variations analysis of the organic matter from 50 core samples collected from the well 9-FBA-61-BA, allowing better understanding of the Early Cretaceous of Reconcavo Basin palynological and palynofacies characteristics. Observations throughout combined light and blue light/UV fluorescence techniques, permitted to defi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
-
3. Micropropagation as a tool for sustainable utilization and conservation of populations of Rhodophyta
Micropropagation as a tool for sustainable utilization and conservation of populations of Rhodophyta. Micropropagation, or in vitro clonal propagation, allows the production of a large number of individuals within a short period. These micropropagated clones could be used as seedlings for seaweed cultivation, avoiding collection from natural beds. Consequent
Revista Brasileira de Farmacognosia. Publicado em: 13/05/2011
-
4. COMUNIDADE DE ALGAS EPIFÍTICAS (COM ÊNFASE EM DIATOMÁCEAS) EM 23 VEREDAS DO ESTADO DE GOIÁS SOB DIFERENTES IMPACTOS AMBIENTAIS / Epiphytic algae community (with emphasis on diatoms) of Palm swamps of Goias State
(Epiphytic algae community of (with emphasis on diatoms) of Palm swamps of Goias State). The present study is the first to evaluating epiphytic algae community structure of in the subsystem Palm swamps in the Cerrado. The general hypotheses of this study were: impacted Palm swamps are under greater influence of allochthonous material, causing changes in limn
Publicado em: 2010
-
5. DinÃmica vegetacional e climÃtica holocÃnica da Caatinga, na regiÃo do Parque Nacional do Catimbau, BuÃque - PE
The main objective of the present work was to describe the Holocene dynamics of the Caatinga vegetation, in the region of the National Park of Catimbau, BuÃque, PE, Brazil. Palynological analyses were carried out from clay, rich in plant organic-matter, deposited on the low slopes of the Serra do JerusalÃm, in the Brejo de SÃo Josà Farm (8 32â 45ââS
Publicado em: 2008
-
6. Desenvolvimento de um método de imobilização-conservação de algas utilizadas em teses ecotoxicológicos
Os testes de toxicidade com algas são importantes para se avaliar o efeito ambientar de substâncias químicas no meio aquático. Os protocolos atuais de execução destes testes exigem uma cultura algal permanente, o que eleva os custos, aumenta a carga laboratorial e acarreta riscos de contaminação ao se fazer, periodicamente, a repicagem da cultura par
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/03/2006
-
7. Estudo da dinâmica populacional do caranguejo-uçá, Ucides cordatus cordatus (LINNAEUS, 1763) (CRUSTACEA-DECAPODA-BRACHYURA), e dos efeitos de uma mortalidade em massa desta espécie em manguezais do Sul da Bahia / Study of the population dynamic of the mangrove crab, Ucides cordatus (LINNAEUS, 1753) (CRUSTACEA-DECAPODA-BRACHYURA_, and the effects of a mass mortality of this specie in Southern Bahia mangroves
The mangrove crab (Ucides cordatus cordatus) is an important fishing resource for the low income communities in Brazil and also plays a role for the environment in the mangrove ecosystem. Massive mortality events of this specie have been registered in many mangrove areas in the Northeast Region of Brazil. The first step of this work was realized from October
Publicado em: 2006
-
8. AÃÃo de algicidas sobre microalgas de efeito antiestÃtico em embalagens de Ãgua engarrafada
The depth waters impound can show some micro seaweed development, favoring the biofilms formation by the favorable hygienic conditions and light incidence. Then, adequate hygienic procedures that avoid the formation or that remove the biofilms will contribute to the quality preservation of the bottled waters. The samples were formed of water packages with al
Publicado em: 2004
-
9. Phycobilisomes in Blue-Green Algae
Fifteen species of freshwater blue-green algae, including unicellular, filamentous, and colonial forms, were subjected to a variety of fixatives, fixation conditions, and stains for comparison of the preservation of phycobilisomes. Absorption spectra of the corresponding in vivo and released photosynthetic pigments, in 10 of the species that were maintained