Tasas de elongación de frondos de macrocystis pyrifera(L.)AG.en Baja California Sur México.
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Autónoma de Baja California
1996
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| _version_ | 1876483236348035072 |
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| author | Gustavo Hernández Carmona |
| author_facet | Gustavo Hernández Carmona |
| contents | Tasas de elongación de frondos de macrocystis pyrifera(L.)AG.en Baja California Sur México. Gustavo Hernández Carmona Ciencias de la Tierra fronds harvest elongation Bahia Tortugas Macrocystis pyrifera Growth rates of Macrocystis pyrifera fronds were measured in a control and a harvested bed inBahía Tortugas, BCS. Measurements were taken every third day for the tirst 15 days after taggingand once again after 100 days. Growth rate in the control bed, as a function of frond length, followsa logarithmic relation, with maximum values in winter and minimum in summer. This pattern was consistent with the IOO-day average growth rate, which varied from 12.8 cm/day in summer to20.8 cm/day in winter. No significant difference was found in the percentage daily growth rate (E),ranging from 5.4% (spring) to 8.5% (winter). The standard growth rate (G) was not significantly differenteither, varying from 5.3% (spring) to 8.8% (winter), and the data obtained for average growthover 15 and I OO days were used to determine the seasonal variation, which is related to ambient temperatureand nutrient availability. No adverse effects were found due to the experimental harvest, butthe logarithmic relation changed to a linear one in spring and fall. Maximum values were also foundin winter and autumn, with minimum values in spring and summer in both the 15 and 1 OO-day averagegrowth rates; average growth values after 100 days varied from 14.7 cmiday (spring) to 23.3 cm/day(winter). The E values ranged from 6.3% (spring) to 7.2% (winter). The G values varied from 6.9%(winter) to 10.1% (spring) and were significantly greater than those of the control bed. Consideringthe data obtained in this study, 1 suggest future experiments to validate the results in order to proposeadditional regulations for sustaining the harvest of the M. pyrifera kelp beds in the southern region oftheir distribution in Mexico. 1996 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48022105 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.22 |
| format | Artículo científico |
| id | redalyc_48022105 |
| institution | Redalyc |
| language | en |
| publishDate | 1996 |
| publisher | Universidad Autónoma de Baja California |
| spellingShingle | Tasas de elongación de frondos de macrocystis pyrifera(L.)AG.en Baja California Sur México. Gustavo Hernández Carmona Ciencias de la Tierra fronds harvest elongation Bahia Tortugas Macrocystis pyrifera Tasas de elongación de frondos de macrocystis pyrifera(L.)AG.en Baja California Sur México. Gustavo Hernández Carmona Ciencias de la Tierra fronds harvest elongation Bahia Tortugas Macrocystis pyrifera Growth rates of Macrocystis pyrifera fronds were measured in a control and a harvested bed inBahía Tortugas, BCS. Measurements were taken every third day for the tirst 15 days after taggingand once again after 100 days. Growth rate in the control bed, as a function of frond length, followsa logarithmic relation, with maximum values in winter and minimum in summer. This pattern was consistent with the IOO-day average growth rate, which varied from 12.8 cm/day in summer to20.8 cm/day in winter. No significant difference was found in the percentage daily growth rate (E),ranging from 5.4% (spring) to 8.5% (winter). The standard growth rate (G) was not significantly differenteither, varying from 5.3% (spring) to 8.8% (winter), and the data obtained for average growthover 15 and I OO days were used to determine the seasonal variation, which is related to ambient temperatureand nutrient availability. No adverse effects were found due to the experimental harvest, butthe logarithmic relation changed to a linear one in spring and fall. Maximum values were also foundin winter and autumn, with minimum values in spring and summer in both the 15 and 1 OO-day averagegrowth rates; average growth values after 100 days varied from 14.7 cmiday (spring) to 23.3 cm/day(winter). The E values ranged from 6.3% (spring) to 7.2% (winter). The G values varied from 6.9%(winter) to 10.1% (spring) and were significantly greater than those of the control bed. Consideringthe data obtained in this study, 1 suggest future experiments to validate the results in order to proposeadditional regulations for sustaining the harvest of the M. pyrifera kelp beds in the southern region oftheir distribution in Mexico. 1996 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48022105 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.22 |
| title | Tasas de elongación de frondos de macrocystis pyrifera(L.)AG.en Baja California Sur México. |
| topic | Ciencias de la Tierra fronds harvest elongation Bahia Tortugas Macrocystis pyrifera |
| url | https://www.redalyc.org/articulo.oa?id=48022105 |