Seagrass
Mostrando 13-24 de 34 artigos, teses e dissertações.
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13. Community structure of the ichthyofauna associated with seagrass beds ( Halodule wrightii) in Formoso River estuary - Pernambuco, Brazil
Pradarias de fanerógamas são utilizadas pela ictiofauna, de maneira geral como ambiente de berçário, abrigo contra predadores, diminuição de competição em aior disponibilidade de recursos alimentares, estabelecendo uma relação de conectividade com demais ecossistemas costeiros. No presente estudo foi avaliada a estrutura da ictiofauna associada às
Anais da Academia Brasileira de Ciências. Publicado em: 2010-09
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14. Aquatic food webs in mangrove and seagrass habitats of Centla Wetland, a Biosphere Reserve in Southeastern Mexico
Manguezais e pradarias de gramíneas são importantes componentes das zonas costeiras tropicais em todo o mundo, sendo habitats comuns nos ''Pântanos de Centla'', uma Reserva da Biosfera localizada em Tabasco, México. Nesse trabalho, são investigadas as teias alimentares de habitats dominados por manguezais e pradarias de gramíneas, através de isótopos
Neotropical Ichthyology. Publicado em: 2010-03
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15. Estimativa de biomassa de prados de Capim-Agulha a partir de imagem de satélite
Este trabalho trata da construção de mapas quantitativos de alvos subaquáticos a partir de imagens de satélite. Especificamente, trata da estimativa de biomassa de prados de capim-agulha (Halodue. Wrightii) no litoral de Pernambuco a partir de imagens Landsat5. A coluna d’água altera, de maneira distinta e exponencial os diferentes comprimentos de ond
Publicado em: 2010
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16. Dinâmica populacional de Halodule wrightii Ascherson e sua fauna e flora associada em Cabo Frio RJ / Population dynamics of halodule wrightii Ascherson and their associated fauna and flora at Cabo Frio - RJ
Fanerógamas marinhas (gramas marinhas) são plantas com flores adaptadas ao ambiente marinho costeiro da maioria dos continentes do mundo. As gramas marinhas formam extensos bancos e proveem valiosos recursos em águas costeiras rasas em todo o mundo, servindo de alimento e berçário para espécies importantes de pescados comerciais e recreacionais. Nesse
Publicado em: 2010
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17. Distribuição e abundância da malacofauna epibentônica no Parracho de Maracajaú, RN, Brasil
The mollusks present a great taxon variety and life habits in coral reefs being good environmental indicators. It is important to know the distribution pattern of the mollusks and the processes that influence it, so that disturbances in sea ecosystems could be monitored. The present study aims to accomplish the inventory and distribution of epibenthic mollus
Publicado em: 2008
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18. Caracterização parcial e atividades farmacológicas do extrato rico em polissacarídeos sulfatados da angiosperma marinha Halodule wrightii
Sulfated polysaccharides (PS) are biomolecules with a great biotechnological potential. There are few data about PS from high plants. In addition, pharmacological activities of PS from plants have not been carrying out. The aim of this work was extract PS from the angiosperm Halodule wrightii and study their anticoagulant and antioxidant activities. Histolog
Publicado em: 2008
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19. Estimativa de abundÃncia da Angiosperma marinha Halodule wrightii Ascherson, em Prados do Estado de Pernambuco, Brasil
A determinaÃÃo da biomassa de angiospermas marinhas, seguindo os mÃtodos tradicionais, à realizada atravÃs da coleta destrutiva utilizando nucleadores de variados tamanhos e formas. AlÃm disso, o desenho amostral à diminuÃdo pelo tempo gasto na realizaÃÃo da coleta e no processamento das amostragens de biomassa. Com isso, o presente trabalho sugere
Publicado em: 2007
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20. Inhibition of Seagrass Photosynthesis by Ultraviolet-B Radiation 1
Effects of ultraviolet-B radiation on the photosynthesis of seagrasses (Halophila engelmanni Aschers, Halodule wrightii Aschers, and Syringodium filiforme Kütz) were examined. The intrinsic tolerance of each seagrass to ultraviolet-B, the presence and effectiveness of photorepair mechanisms to ultraviolet-B-induced photosynthetic inhibition, and the role of
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21. Environmental transmission of a sulfur-oxidizing bacterial gill endosymbiont in the tropical lucinid bivalve Codakia orbicularis.
Codakia orbicularis is a large tropical member of the bivalve mollusk family Lucinidae which inhabits shallow-water sea-grass beds (Thalassia testudinum environment) and harbors sulfur-oxidixing endosymbiotic bacteria within bacteriocytes of its gill filaments. When a C. orbicularis-specific 16S rDNA (DNA encoding rRNA) primer is used with a bacterium-specif
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22. Amplification, cloning, and sequencing of a nifH segment from aquatic microorganisms and natural communities.
By use of the polymerase chain reaction and degenerate oligonucleotide primers for highly conserved regions of nifH, a segment of nifH DNA was amplified from several aquatic microorganisms, including an N2-fixing bacterium closely associated with the marine filamentous cyanobacterium Trichodesmium sp., a heterotrophic isolate from the root/rhizome of the sea
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23. Genetic diversity enhances the resistance of a seagrass ecosystem to disturbance
Motivated by recent global reductions in biodiversity, empirical and theoretical research suggests that more species-rich systems exhibit enhanced productivity, nutrient cycling, or resistance to disturbance or invasion relative to systems with fewer species. In contrast, few data are available to assess the potential ecosystem-level importance of genetic di
National Academy of Sciences.
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24. Evolution of seahorses' upright posture was linked to Oligocene expansion of seagrass habitats
Seahorses (Syngnathidae: Hippocampus) are iconic marine teleosts that are readily identifiable by their upright posture. The fossil record is inadequate to shed light on the evolution of this trait because it lacks transitional forms. There are, however, extant syngnathid species (the pygmy pipehorses) that look like horizontally swimming seahorses and that
The Royal Society.