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| Format: | Artículo científico |
| Langue: | en |
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Universidad Autónoma de Baja California
2016
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| author | Félix L. Figueroa |
| author_facet | Félix L. Figueroa |
| contents | Photosynthetic activity estimated as in vivo chlorophyll a fluorescence in calcareous red macroalgae Félix L. Figueroa Maibe Hermoso-Beltrán Paula SM Celis-Plá José Bonomi-Barufi Félix Álvarez-Gómez Nathalie Korbee Jorge López-Calderón Tania Cota-Lucero Rafael Riosmena-Rodríguez Ciencias de la Tierra vermetids rhodoliths temperatu re red calcareous m acroalgae In vivo chlorophyll a fluorescence Photosynthetic activity was estimated, in 2 different sets of experiments, as in vivo chlorophyll a fluorescence in 2 calcareous red macroalgae: Neogoniolithon brassica - florida , which forms vermetid reefs with Dendropoma petraeum , and the rhodolith-forming Lithophyllum margaritae . In the first set of experiment s, vermetid reefs collected fro m the Cabo de Gata-Níjar Natural Park (Almería, Spain) were incubated for 6 months in ou tdoor mesocosms at 2 different temperatures: ambient temperatu re (T) and ambient temperature plus 2 ºC (T+). Daily variations in effective quantum yields were related to the increase in solar radiat ion. Electron transport rate (E TR) was higher at T+ than at T. Oxygen production, es timated from ETR, was higher in N . brassica - florida growing in vermetid reefs in t he coastal area than in those incubated in mesocosms or under laboratory conditions. In the second set of experiments, L . margaritae specimens with or without attached epifauna (mainly sponges) were c ollected at 2 sites (Pedregoso and CFE) on the Baja California Peninsula, Mexico, and at 2 dep ths (1 and 2 m). ETR values for rhodoliths collect ed at 1 m depth and with attach ed epifauna were higher than t hose for rhodoliths collected at 2m depth, indicating the importance of gre ater incident radiation on phot osynthetic activity. Photosynthe tic activity was higher in L . margaritae collected from Pedregoso, the site with bet ter water quality (high transp arency and low pollution) and rocky substrate availability. In the CFE samples, the photosynthetic efficiency ( ETR ) was highest in rhodoliths with attached epifauna. The highest ETR values for N . brassica - florida at T+ and the highest ETR or ETR values for L . margaritae with attached sponges may be explained by the increase in CO 2 available for photosynthesis due to the respiration of the a ssociated fauna. The usefulness of in vivo chlorophyll a fluorescence for estimating photosynth etic production in calcareous macroalga e under multifactorial experiments is discu ssed. 2016 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48046495005 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.2 Vol.42 |
| format | Artículo científico |
| id | redalyc_48046495005 |
| language | en |
| publishDate | 2016 |
| publisher | Universidad Autónoma de Baja California |
| spellingShingle | Photosynthetic activity estimated as in vivo chlorophyll a fluorescence in calcareous red macroalgae Félix L. Figueroa Ciencias de la Tierra vermetids rhodoliths temperatu re red calcareous m acroalgae In vivo chlorophyll a fluorescence Photosynthetic activity estimated as in vivo chlorophyll a fluorescence in calcareous red macroalgae Félix L. Figueroa Maibe Hermoso-Beltrán Paula SM Celis-Plá José Bonomi-Barufi Félix Álvarez-Gómez Nathalie Korbee Jorge López-Calderón Tania Cota-Lucero Rafael Riosmena-Rodríguez Ciencias de la Tierra vermetids rhodoliths temperatu re red calcareous m acroalgae In vivo chlorophyll a fluorescence Photosynthetic activity was estimated, in 2 different sets of experiments, as in vivo chlorophyll a fluorescence in 2 calcareous red macroalgae: Neogoniolithon brassica - florida , which forms vermetid reefs with Dendropoma petraeum , and the rhodolith-forming Lithophyllum margaritae . In the first set of experiment s, vermetid reefs collected fro m the Cabo de Gata-Níjar Natural Park (Almería, Spain) were incubated for 6 months in ou tdoor mesocosms at 2 different temperatures: ambient temperatu re (T) and ambient temperature plus 2 ºC (T+). Daily variations in effective quantum yields were related to the increase in solar radiat ion. Electron transport rate (E TR) was higher at T+ than at T. Oxygen production, es timated from ETR, was higher in N . brassica - florida growing in vermetid reefs in t he coastal area than in those incubated in mesocosms or under laboratory conditions. In the second set of experiments, L . margaritae specimens with or without attached epifauna (mainly sponges) were c ollected at 2 sites (Pedregoso and CFE) on the Baja California Peninsula, Mexico, and at 2 dep ths (1 and 2 m). ETR values for rhodoliths collect ed at 1 m depth and with attach ed epifauna were higher than t hose for rhodoliths collected at 2m depth, indicating the importance of gre ater incident radiation on phot osynthetic activity. Photosynthe tic activity was higher in L . margaritae collected from Pedregoso, the site with bet ter water quality (high transp arency and low pollution) and rocky substrate availability. In the CFE samples, the photosynthetic efficiency ( ETR ) was highest in rhodoliths with attached epifauna. The highest ETR values for N . brassica - florida at T+ and the highest ETR or ETR values for L . margaritae with attached sponges may be explained by the increase in CO 2 available for photosynthesis due to the respiration of the a ssociated fauna. The usefulness of in vivo chlorophyll a fluorescence for estimating photosynth etic production in calcareous macroalga e under multifactorial experiments is discu ssed. 2016 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48046495005 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.2 Vol.42 |
| title | Photosynthetic activity estimated as in vivo chlorophyll a fluorescence in calcareous red macroalgae |
| topic | Ciencias de la Tierra vermetids rhodoliths temperatu re red calcareous m acroalgae In vivo chlorophyll a fluorescence |
| url | https://www.redalyc.org/articulo.oa?id=48046495005 |