The maximum nitrate reductase activity of the seagrass Zostera noltii (Hornem.) varies along its vertical distribution

Ana Alexandre; J Silva; Rui Santos; Navarro, Nuria; Barrón, Cristina; Duarte, Carlos M.; Rui Santos

Ana Isabel Delfim dos Santos Alexandre

Posição

Postdoc

Grau Académico

Doutoramento

Grupo

Marine Plant Ecology Research Group

Localização

Faro, Gambelas Campus, UAlg

Gabinete

3.11

aalexandre@ualg.pt

Keywords

seagrasses, marine ecology, nitrogen metabolism

Organiza

Informação Principal

Marine biologist with expertise in anthropogenic impacts (clam harvesting, nutrient inputs and ocean acidification), sexual reproduction and nitrogen metabolism of seagrasses. Currently focused on the importance of organic nitrogen in seagrass systems and the nutrient (N and P) competition dynamics between seagrasses and seaweeds.

Projetos

Projects Membership

	Título	Coordenador	Início	Fim	Orçamento	Orçamento Total
GRASSMET	Climate change effects on seagrass secondary metabolism: ecological implications.	João Silva	07/2016	06/2019	200k€

Notícias

News

CCMAR acolhe novamente alunos no Mitose: Ciência ao Sul

O concurso "Mitose: Ciência ao Sul" trouxe em 2017 mais uma vez alunos até ao CCMAR. Durante três dias, alunos do ensino secundário, de todo o país, são recebidos nos laboratórios para desenvolver pequenos projetos.

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Investigadores do CCMAR descrevem pela primeira vez populações de ervas de S. Tomé

Investigadores do CCMAR levaram a cabo uma expedição a São Tomé e Príncipe com o objetivo de efetuar o primeiro levantamento de ervas marinhas neste arquipélago, no âmbito de um projeto financiado pela PADI Foundation.

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CCMAR oferece livros e materiais a instituições de São Tomé e Príncipe

As ofertas reunidas pelo Centro de Ciências do Mar (CCMAR) chegaram ao arquipélago de São Tomé e Príncipe esta semana.

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Alunos do Mestrado do ISPA visitam CCMAR

Na passada semana, um grupo de alunos do Mestrado de Biologia Marinha e Conservação do ISPA - Instituto Universitário de Ciências Psicológicas, Sociais e da Vida - visitou o CCMAR e o grupo de investigação ALGAE conduziu-os numa saída de campo, onde aprenderam mais sobre ervas marinhas.

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Ervas marinhas captam mais nutrientes do que algas na Ria Formosa

Numa competição pelos nutrientes disponíveis em ecossistemas costeiros, como é o caso da Ria Formosa, os investigadores do Centro de Ciências do Mar (CCMAR) concluíram que as ervas marinhas ganham às algas.

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Ervas marinhas vão beneficiar com as alterações globais

Aspeto das pradarias de Zostera marina em Portugal durante a maré baixa no verão (Créditos: Ana Alexandre – CCMAR)

Num estudo publicado recentemente na Functional Ecology, os investigadores concluíram que os efeitos das alterações climáticas, particularmente do aquecimento oceânico, poderão beneficiar as plantas marinhas.

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Publicações

Year of Publication
2018	Alexandre A, Silva J, Santos R. Light is more important than nutrient ratios of fertilization for Cymodocea nodosa seedling development. Frontiers in Plant Science. 2018;9:768. Ler mais acerca de Light is more important than nutrient ratios of fertilization for Cymodocea nodosa seedling development Google Scholar
2017	A A, A B, AH E, R S. Interactions between seagrasses and seaweeds during surge nitrogen acquisition determine interspecific competition. Scientific Reports. 2017;(7):13651. Ler mais acerca de Interactions between seagrasses and seaweeds during surge nitrogen acquisition determine interspecific competition Google Scholar
2017	A A, J S, R F, D P, EA S, R S. First description of seagrass distribution and abundance in São Tomé and Príncipe. Aquatic Botany. 2017;142:48-52. Ler mais acerca de First description of seagrass distribution and abundance in São Tomé and Príncipe Google Scholar
2016	Sandoval-Gil J, Alexandre A, Santos R, Camacho-Ibar VF. Nitrogen Uptake and Internal Recycling in Zostera marina Exposed to Oyster Farming: Eelgrass Potential as a Natural Biofilter. Estuaries and Coasts. 2016;39(6):1694 - 1708. doi:10.1007/s12237-016-0102-4 Ler mais acerca de Nitrogen Uptake and Internal Recycling in Zostera marina Exposed to Oyster Farming: Eelgrass Potential as a Natural Biofilter Google Scholar DOI
2016	Georgiou D, Alexandre A, Luis J, Santos R. Temperature is not a limiting factor for the expansion of Halophila stipulacea throughout the Mediterranean Sea. Marine Ecology Progress Series. 2016;544:159 - 167. doi:10.3354/meps11582 Ler mais acerca de Temperature is not a limiting factor for the expansion of Halophila stipulacea throughout the Mediterranean Sea Google Scholar DOI
2016	Alexandre A, Silva J, Santos R. Nitrogen uptake in light versus darkness of the seagrass Zostera noltei : integration with carbon metabolism. Marine Ecology. 2016;37(5):1050 - 1056. doi:10.1111/maec.12351 Ler mais acerca de Nitrogen uptake in light versus darkness of the seagrass Zostera noltei : integration with carbon metabolism Google Scholar DOI
2016	KHAN F, Alexandre A, ULLAH H, Santos R. Effects of elevated CO2 and nutrients on the community metabolismof a Cymodocea nodosa bed. TURKISH JOURNAL OF BOTANY. 2016;40:250 - 257. doi:10.3906/bot-1404-119 Ler mais acerca de Effects of elevated CO2 and nutrients on the community metabolismof a Cymodocea nodosa bed Google Scholar DOI
2015	Costa MM, Barrote I, Silva J, et al. Epiphytes Modulate Posidonia oceanica Photosynthetic Production, Energetic Balance, Antioxidant Mechanisms, and Oxidative Damage. Frontiers in Marine Science. 2015;2. doi:10.3389/fmars.2015.00111 Ler mais acerca de Epiphytes Modulate Posidonia oceanica Photosynthetic Production, Energetic Balance, Antioxidant Mechanisms, and Oxidative Damage Google Scholar DOI
2015	Alexandre A, Hill PW, Jones DL, Santos R. Dissolved organic nitrogen: A relevant, complementary source of nitrogen for the seagrass Zostera marina. Limnology and Oceanography. 2015;60(5):1477 - 1483. doi:10.1002/lno.10084 Ler mais acerca de Dissolved organic nitrogen: A relevant, complementary source of nitrogen for the seagrass Zostera marina Google Scholar DOI
2014	Alexandre A, Georgiou D, Santos R. Inorganic nitrogen acquisition by the tropical seagrass Halophila stipulacea. Marine Ecology. 2014;35(3):387 - 394. doi:10.1111/maec.12128 Ler mais acerca de Inorganic nitrogen acquisition by the tropical seagrass Halophila stipulacea Google Scholar DOI
2012	Alexandre A, Silva J, Buapet P, Björk M, Santos R. Effects of CO ₂ enrichment on photosynthesis, growth, and nitrogen metabolism of the seagrass Zostera noltii. Ecology and Evolution. 2012;2(10):2625 - 2635. doi:10.1002/ece3.333 Ler mais acerca de Effects of CO 2 enrichment on photosynthesis, growth, and nitrogen metabolism of the seagrass Zostera noltii Google Scholar DOI
2011	Alexandre A, Silva J, Bouma TJ, Santos R. Inorganic nitrogen uptake kinetics and whole-plant nitrogen budget in the seagrass Zostera noltii. Journal of Experimental Marine Biology and Ecology. 2011;401(1-2):7 - 12. doi:10.1016/j.jembe.2011.03.008 Ler mais acerca de Inorganic nitrogen uptake kinetics and whole-plant nitrogen budget in the seagrass Zostera noltii Google Scholar DOI
2010	Alexandre A, Silva J, Santos R. Inorganic nitrogen uptake and related enzymatic activity in the seagrass Zostera noltii. Marine Ecology. 2010;31(4):539 - 545. doi:10.1111/mae.2010.31.issue-410.1111/j.1439-0485.2010.00378.x Ler mais acerca de Inorganic nitrogen uptake and related enzymatic activity in the seagrass Zostera noltii Google Scholar DOI
2006	Alexandre A, Cabaço S, Santos R, Serrão EA. Timing and success of reproductive stages in the seagrass Zostera noltii. Aquatic Botany. 2006;85(3):219 - 223. doi:10.1016/j.aquabot.2006.05.002 Ler mais acerca de Timing and success of reproductive stages in the seagrass Zostera noltii Google Scholar DOI
2005	Alexandre A, Santos R, Serrão EA. Effects of clam harvesting on sexual reproduction of the seagrass Zostera noltii. Marine Ecology Progress Series. 2005;298:115 - 122. doi:10.3354/meps298115 Ler mais acerca de Effects of clam harvesting on sexual reproduction of the seagrass Zostera noltii Google Scholar DOI
2005	Cabaço S, Alexandre A, Santos R. Population-level effects of clam harvesting on the seagrass Zostera noltii. Marine Ecology Progress Series. 2005;298:123 - 129. doi:10.3354/meps298123 Ler mais acerca de Population-level effects of clam harvesting on the seagrass Zostera noltii Google Scholar DOI
2004	Santos R, Silva J, Alexandre A, Navarro N, Barrón C, Duarte CM. Ecosystem metabolism and carbon fluxes of a tidally-dominated coastal lagoon. Estuaries. 2004;27(6):977 - 985. doi:10.1007/BF02803424 Ler mais acerca de Ecosystem metabolism and carbon fluxes of a tidally-dominated coastal lagoon Google Scholar DOI
2004	Alexandre A, Silva J, Santos R. The maximum nitrate reductase activity of the seagrass Zostera noltii (Hornem.) varies along its vertical distribution. Journal of Experimental Marine Biology and Ecology. 2004;307(1):127 - 135. doi:10.1016/j.jembe.2004.02.002 Ler mais acerca de The maximum nitrate reductase activity of the seagrass Zostera noltii (Hornem.) varies along its vertical distribution Google Scholar DOI

Other Publications

Marbà N, Duarte C, Alexandre A, Cabaço S (2004) How do seagrasses grow and spread? In: European Seagrasses: an introduction to ecology, monitoring and management, (eds) J. Borum, CM Duarte, D Krause-Jensen, T Greve, EU Project Monitoring and Managing of European Seagrass Beds (M&MS), EVK3-CT-2000-00044, http://www.seagrasses.org: 11-18

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