caa a22 4500 37893189X CHVBK 20180305123631.0 cr unu---uuuuu 161128e20040701xx s 000 0 eng 10.1515/BOT.2004.035 doi (NATIONALLICENCE)gruyter-10.1515/BOT.2004.035 Annual variation in leaf photosynthesis and leaf nutrient content of four Mediterranean seagrasses [Elektronische Daten] [Susana Enríquez, Nuria Marbà, Just Cebriàn, Carlos M. Duarte] We examine here the annual variation in leaf photosynthesis and nutrient status of four temperate seagrass species: Posidonia oceanica, Cymodocea nodosa, Zostera noltii, and Zostera marina. We also examine the relationship between leaf photosynthesis and seasonal plant growth and productivity. The four seagrass species examined co-occurred in a shallow protected cove on the NE Spanish Mediterranean coast. The results presented give evidence of large annual variation in the leaf physiological status of these four seagrasses, as well as the occurrence of significant differences in the seasonal pattern among species. We found two contrasting seasonal patterns characterized by optimal leaf photosynthesis in summer (represented by C. nodosa), and winter-autumn (represented by P. oceanica and Z. noltii). These contrasting patterns corresponded with a differential plant dependence on climate fluctuations (described by temperature and irradiance) vs. speciesspecific nutrient status (described by leaf nutrient content). As plant nutrient status results from speciesspecific differences in nutrient requirements, nutrient uptake efficiency, and internal nutrient economy, we conclude that the variation among species found in leaf nutrient content derives from species-specific responses to environmental forcing. Consequently, we can infer that an important fraction of the seasonal variability that seagrasses show may be related to species-specific responses. We also found significant differences among species in the coupling between leaf photosynthesis and plant growth and productivity. Both aspects, speciesspecific responses to environmental forcing and speciesspecific coupling between leaf photosynthesis and plant growth may result in differential seasonal patterns of growth and productivity among seagrass species. © Walter de Gruyter Hydrobiology nationallicence Mycology, fungi nationallicence Botany & plant sciences nationallicence leaf photosynthetic status nationallicence nutrient status nationallicence plant growth nationallicence seagrasses nationallicence seasonality nationallicence Enríquez Susana Unidad Académica Puerto Morelos, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), Apdo. Postal 1152, Cancún 77500, Quintana Roo, Mexico aut Marbà Nuria Centro de Estudios Avanzados de Blanes (CEAB-CSIC), Camí de Sta. Bárbara s/n, 17300 Blanes (Girona), Spain aut Cebriàn Just Centro de Estudios Avanzados de Blanes (CEAB-CSIC), Camí de Sta. Bárbara s/n, 17300 Blanes (Girona), Spain aut Duarte Carlos M. Centro de Estudios Avanzados de Blanes (CEAB-CSIC), Camí de Sta. Bárbara s/n, 17300 Blanes (Girona), Spain aut Botanica Marina Walter de Gruyter 47/4(2004-07-01), 295-306 0006-8055 47:4<295 2004 47 botm https://doi.org/10.1515/BOT.2004.035 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/BOT.2004.035 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Enríquez Susana Unidad Académica Puerto Morelos, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), Apdo. Postal 1152, Cancún 77500, Quintana Roo, Mexico aut NATIONALLICENCE 700 1- Marbà Nuria Centro de Estudios Avanzados de Blanes (CEAB-CSIC), Camí de Sta. Bárbara s/n, 17300 Blanes (Girona), Spain aut NATIONALLICENCE 700 1- Cebriàn Just Centro de Estudios Avanzados de Blanes (CEAB-CSIC), Camí de Sta. Bárbara s/n, 17300 Blanes (Girona), Spain aut NATIONALLICENCE 700 1- Duarte Carlos M. Centro de Estudios Avanzados de Blanes (CEAB-CSIC), Camí de Sta. Bárbara s/n, 17300 Blanes (Girona), Spain aut NATIONALLICENCE 773 0- Botanica Marina Walter de Gruyter 47/4(2004-07-01), 295-306 0006-8055 47:4<295 2004 47 botm CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter