RT info:eu-repo/semantics/article
T1 Leaf phenology, growth and primary production of the seagrass Cymodocea nodosa in El Médano (South of Tenerife, Canary Islands)
A1 Afonso Carrillo, Julio
A1 Reyes, Javier
A1 Sansón Acedo, Marta
A2 BotánicaEcología y Fisiología Vegetal
A2 Botánica Marina
AB Data on density, biometry, growth and biomass of Cymodocea nodosa (Ucria) Ascherson at El Médano(South of Tenerife, Canary Islands) are presented. Monthly data of all these parameters showed regularseasonal variations, with their mean highest values in spring-summer and their mean lowest ones inautumn-winter. The mean number of leaves per shoot varied from 2.4 to 3.4 leaves shoot!, the oldestleaf length varied from 14.7 to 31 cm and the leaf width from 1.7 to 3.4 mm, with the shoot densityvarying from 934 to 1928 shoots m? Leaf growth measurements were estimated by a slightly modified hole punching method. The leaf growth was between 0.8 and 1.9 mg dw shoot' day!, the shootproduction/biomass (P/B) ratio varied from 0.012 to 0.018 day-1 and the leaf appearance rate from 0.025to 0.056 leaves shoot' day !, with the leaf production varying from 0.9 to 3.6 g dw m ? of meadow day-! The above-ground biomass was between 55 and 249 g dw m-2 and the below-ground one variedfrom 181 to 385 g dw m-?. The annual leaf production was 752 g dw m ² year-!, with a P/B ratio of3.5 year! The annual rhizome production was 30-37 g dw m 2 year!, with a P/B ratio of 0.14-0.16year and an annual growth of 2.2 m of rhizomes per m² of meadow. In general, Cymodocea nodosapresented a similar behaviour to that known for this seagrass species from the Mediterranean Sea.
YR 1995
FD 1995
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DS Repositorio institucional de la Universidad de La Laguna
RD 09-nov-2024