Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific
The eelgrass Zostera marina L. is distributed along the Baja California Peninsula (Mexico) where it is exposed to a wide range of irradiances and temperatures that could promote changes in its biochemical composition. Consequently, the objective of this study was to characterize the variations in th...
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Iniversidad Autónoma de Baja California
2004
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Ciencias Marinas |
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eng |
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Online |
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Cabello-Pasini, A Muñoz-Salazar, R Ward, DH |
| spellingShingle |
Cabello-Pasini, A Muñoz-Salazar, R Ward, DH Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific |
| author_facet |
Cabello-Pasini, A Muñoz-Salazar, R Ward, DH |
| author_sort |
Cabello-Pasini, A |
| title |
Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific |
| title_short |
Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific |
| title_full |
Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific |
| title_fullStr |
Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific |
| title_full_unstemmed |
Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific |
| title_sort |
biochemical characterization of the eelgrass zostera marina at its southern distribution limit in the north pacific |
| description |
The eelgrass Zostera marina L. is distributed along the Baja California Peninsula (Mexico) where it is exposed to a wide range of irradiances and temperatures that could promote changes in its biochemical composition. Consequently, the objective of this study was to characterize the variations in the levels of chlorophyll, carbohydrates, proteins, fiber, ash and calories in the shoots of Z. marina from the north (San Quintín) and south (Ojo de Liebre and San Ignacio lagoons) of the peninsula. Temperature in the southern lagoons was 5–6ºC higher than in the northern lagoon; likewise, in situ irradiance was two-fold greater in the south than in the north. As a result of the lower irradiance levels, the concentration of chlorophyll in the shoots of Z. marina was twice as high (1.7 mg gWW–1) in the northern lagoon than in the southern ones (0.8 mg gWW–1). Similar to chlorophyll levels, the concentration of soluble carbohydrates in the shoots was greater in the northern lagoon than in the southern ones, suggesting that the high levels of chlorophyll are enough to compensate for the low irradiance levels and to maintain a positive carbon balance at San Quintín. On the other hand, the levels of proteins in the shoots from the north of the peninsula were slightly lower than those from the southern populations. In general, these results suggest that the different environmental conditions to which Z. marina is exposed along the peninsula impact its biochemical composition. |
| publisher |
Iniversidad Autónoma de Baja California |
| publishDate |
2004 |
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https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/123 |
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1715723924518469632 |
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oai:cienciasmarinas.com.mx:article-1232019-04-22T19:52:47Z Biochemical characterization of the eelgrass Zostera marina at its southern distribution limit in the North Pacific Caracterización bioquímica del pasto marino Zostera marina en el límite sur de su distribución en el Pacífico Norte Cabello-Pasini, A Muñoz-Salazar, R Ward, DH Zostera marina Baja California chemical composition chlorophyll seasonality Zostera marina Baja California composición química clorofila estacionalidad The eelgrass Zostera marina L. is distributed along the Baja California Peninsula (Mexico) where it is exposed to a wide range of irradiances and temperatures that could promote changes in its biochemical composition. Consequently, the objective of this study was to characterize the variations in the levels of chlorophyll, carbohydrates, proteins, fiber, ash and calories in the shoots of Z. marina from the north (San Quintín) and south (Ojo de Liebre and San Ignacio lagoons) of the peninsula. Temperature in the southern lagoons was 5–6ºC higher than in the northern lagoon; likewise, in situ irradiance was two-fold greater in the south than in the north. As a result of the lower irradiance levels, the concentration of chlorophyll in the shoots of Z. marina was twice as high (1.7 mg gWW–1) in the northern lagoon than in the southern ones (0.8 mg gWW–1). Similar to chlorophyll levels, the concentration of soluble carbohydrates in the shoots was greater in the northern lagoon than in the southern ones, suggesting that the high levels of chlorophyll are enough to compensate for the low irradiance levels and to maintain a positive carbon balance at San Quintín. On the other hand, the levels of proteins in the shoots from the north of the peninsula were slightly lower than those from the southern populations. In general, these results suggest that the different environmental conditions to which Z. marina is exposed along the peninsula impact its biochemical composition. El pasto marino Zostera marina L. se distribuye a lo largo de la península de Baja California (México) y está expuesto a un amplio rango de irradiancias y temperaturas que podrían modificar su composición bioquímica. En consecuencia, el objetivo de este estudio fue el de caracterizar las variaciones en la concentración de clorofila, carbohidratos, proteínas, fibra, ceniza y calorías en los haces de Z. marina de poblaciones del norte (San Quintín) y el sur (Laguna Ojo de Liebre y Laguna San Ignacio) de Baja California, México. En las lagunas costeras del sur, la temperatura de la columna de agua fue aproximadamente 5–6ºC más alta que en la laguna del norte de la península. Al igual que la temperatura, la irradiancia in situ fue dos veces mayor en las lagunas del sur que en la laguna del norte. Como resultado de los menores niveles de irradiancia, los niveles de clorofila en las hojas de Z. marina fueron aproximadamente dos veces mayores en las poblaciones del norte (1.7 mg gPH–1) que en las del sur (0.8 mg gPH–1) de Baja California. Al igual que la clorofila, los niveles de carbohidratos solubles en las hojas fueron mayores en las poblaciones del norte que en las del sur, lo cual sugiere que los altos niveles de clorofila son suficientes para compensar los bajos niveles de irradiancia en la laguna del norte, y mantener un balance de carbono positivo. Por el contrario, los niveles de proteínas en las hojas de Z. marina de la laguna costera del norte de la península fueron ligeramente menores que en las del sur. En general los resultados sugieren que las diferentes condiciones ambientales a las que están expuestas las poblaciones de Z. marina en Baja California impactan su composición bioquímica. Iniversidad Autónoma de Baja California 2004-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/123 10.7773/cm.v30i11.123 Ciencias Marinas; Vol. 30 No. 1A (2004); 21-34 Ciencias Marinas; Vol. 30 Núm. 1A (2004); 21-34 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/123/102 |
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