Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine
Three successive cycles of Macrocystis pyrifera forest were studied over a 48-month period (May 1975–April 1979). Each cycle consisted of a juvenile phase, an equilibrium phase, and a senescence phase. For each plant, total and harvestable weight, length, and the number of stipes at the plant base a...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
2025
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| Acceso en línea: | https://revistas.unne.edu.ar/index.php/eco/article/view/8533 |
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I48-R154-article-8533 |
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I48-R154-article-85332025-08-08T13:52:41Z Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine Ciclos de los bosques de Macrocystis pyrifera en Bahia Camarones, provincia del Chubut, República Argentina Hall, Martín A. Boraso de Zaixso, Alicia L. Three successive cycles of Macrocystis pyrifera forest were studied over a 48-month period (May 1975–April 1979). Each cycle consisted of a juvenile phase, an equilibrium phase, and a senescence phase. For each plant, total and harvestable weight, length, and the number of stipes at the plant base and canopy were measured. Forest density was assessed, and indices were developed to indicate senescence and the relationship between canopy and base. A method is proposed to make the results independent of tidal factors and depth. Total biomass ranged from 0.58 kg/plant to 7.39 kg/plant; harvestable biomass ranged from no harvestable portion available to 3.12 kg/plant. The mean biomass was 8.42 kg/m² (95% confidence limits: 0.68–16.10 kg/m²) for whole plants, and 1.81 kg/m² (0.67–3.05 kg/m²) for the harvestable portion. The biological significance of the different parameters is discussed, and comparisons are made with other populations. Se estudiaron tres ciclos sucesivos de bosques de Macrocystis pyrifera durante un período de 48 meses (mayo de 1975–abril de 1979). Cada ciclo constó de una fase juvenil, una fase de equilibrio y una fase de senescencia. En cada planta se midieron el peso total y cosechable, la longitud y el número de estipes en la base y en el dosel. Se evaluó la densidad del bosque y se desarrollaron índices para indicar la senescencia y la relación entre el dosel y la base. Se propone un método para hacer que los resultados sean independientes de los factores de marea y de la profundidad. La biomasa total varió entre 0,58 kg/planta y 7,39 kg/planta; la biomasa cosechable varió desde ausencia de porción cosechable hasta 3,12 kg/planta. La biomasa media fue de 8,42 kg/m² (límites de confianza al 95%: 0,68–16,10 kg/m²) para las plantas enteras y de 1,81 kg/m² (0,67–3,05 kg/m²) para la porción cosechable. Se discute el significado biológico de los distintos parámetros y se establecen comparaciones con otras poblaciones. Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2025-08-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://revistas.unne.edu.ar/index.php/eco/article/view/8533 Ecosur; 1979: vol. 6, no. 12; 165-184 0325-108X spa https://revistas.unne.edu.ar/index.php/eco/article/view/8533/8078 |
| institution |
Universidad Nacional del Nordeste |
| institution_str |
I-48 |
| repository_str |
R-154 |
| container_title_str |
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) |
| language |
Español |
| format |
Artículo revista |
| author |
Hall, Martín A. Boraso de Zaixso, Alicia L. |
| spellingShingle |
Hall, Martín A. Boraso de Zaixso, Alicia L. Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine |
| author_facet |
Hall, Martín A. Boraso de Zaixso, Alicia L. |
| author_sort |
Hall, Martín A. |
| title |
Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine |
| title_short |
Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine |
| title_full |
Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine |
| title_fullStr |
Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine |
| title_full_unstemmed |
Cycles of Macrocystis pyrifera forest in Bahia Camarones, Chubut, Argentine |
| title_sort |
cycles of macrocystis pyrifera forest in bahia camarones, chubut, argentine |
| description |
Three successive cycles of Macrocystis pyrifera forest were studied over a 48-month period (May 1975–April 1979). Each cycle consisted of a juvenile phase, an equilibrium phase, and a senescence phase. For each plant, total and harvestable weight, length, and the number of stipes at the plant base and canopy were measured. Forest density was assessed, and indices were developed to indicate senescence and the relationship between canopy and base.
A method is proposed to make the results independent of tidal factors and depth. Total biomass ranged from 0.58 kg/plant to 7.39 kg/plant; harvestable biomass ranged from no harvestable portion available to 3.12 kg/plant. The mean biomass was 8.42 kg/m² (95% confidence limits: 0.68–16.10 kg/m²) for whole plants, and 1.81 kg/m² (0.67–3.05 kg/m²) for the harvestable portion.
The biological significance of the different parameters is discussed, and comparisons are made with other populations. |
| publisher |
Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) |
| publishDate |
2025 |
| url |
https://revistas.unne.edu.ar/index.php/eco/article/view/8533 |
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