Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon
To date, the spatial distribution pattern and density of Brazil nut trees in logged forest stands is unclear across the Amazon basin. We asked the following questions: (1) What are the densities and spatial distributions of Brazil nut juveniles (10 ≤ dbh < 40 cm) and adults (≥ 40 cm dbh) in three se...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Cambridge University Press
2017
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/95503 |
| _version_ | 1855517685039759360 |
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| author | Rockwell, Cara A. Guariguata, Manuel R. Menton, M. Arroyo Quispe, E. Quaedvlieg, J. Warren-Thomas, E. Fernández Silva, H. Jurado Rojas, E.E. Kohagura Arrunátegui, J.A.H. Meza Vega, L.A. Quenta Hancco, R. Revilla Vera, O. Valera Tito, J.F. Villarroel Panduro, B.T. Yucra Salas, J.J. |
| author_browse | Arroyo Quispe, E. Fernández Silva, H. Guariguata, Manuel R. Jurado Rojas, E.E. Kohagura Arrunátegui, J.A.H. Menton, M. Meza Vega, L.A. Quaedvlieg, J. Quenta Hancco, R. Revilla Vera, O. Rockwell, Cara A. Valera Tito, J.F. Villarroel Panduro, B.T. Warren-Thomas, E. Yucra Salas, J.J. |
| author_facet | Rockwell, Cara A. Guariguata, Manuel R. Menton, M. Arroyo Quispe, E. Quaedvlieg, J. Warren-Thomas, E. Fernández Silva, H. Jurado Rojas, E.E. Kohagura Arrunátegui, J.A.H. Meza Vega, L.A. Quenta Hancco, R. Revilla Vera, O. Valera Tito, J.F. Villarroel Panduro, B.T. Yucra Salas, J.J. |
| author_sort | Rockwell, Cara A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | To date, the spatial distribution pattern and density of Brazil nut trees in logged forest stands is unclear across the Amazon basin. We asked the following questions: (1) What are the densities and spatial distributions of Brazil nut juveniles (10 ≤ dbh < 40 cm) and adults (≥ 40 cm dbh) in three selectively logged Brazil nut concessions (1413 ha sampled) in Madre de Dios, Peru; (2) What is the spatial relationship between adults and juveniles (10 ≤ dbh < 30 cm); and (3) What is the spatial relationship between juveniles (10 ≤ dbh <30 cm) and cut stumps (≥ 10 y)? Spatial analyses were conducted using statistics derived from Ripley's K function. Juveniles were aggregated in all three concessions. Results for adult populations rejected the null hypothesis of a random distribution among trees ≥ 40 cm dbh. We did not find an attraction between juveniles and cut-stump locations, nor between adults and juveniles. The strong peaks of aggregation for juveniles and adult Brazil nuts in this study occurred at long distances (300–900 m), suggesting multiple tree canopy gaps as drivers of spatial distribution patterns, either via natural or anthropogenic sources. Our data contribute to a more thorough understanding of Brazil nut population structure in disturbed forests in south-western Amazonia. |
| format | Journal Article |
| id | CGSpace95503 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace955032025-06-17T08:23:24Z Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon Rockwell, Cara A. Guariguata, Manuel R. Menton, M. Arroyo Quispe, E. Quaedvlieg, J. Warren-Thomas, E. Fernández Silva, H. Jurado Rojas, E.E. Kohagura Arrunátegui, J.A.H. Meza Vega, L.A. Quenta Hancco, R. Revilla Vera, O. Valera Tito, J.F. Villarroel Panduro, B.T. Yucra Salas, J.J. forests trees brazil nuts spatial distribution multiple use forestry To date, the spatial distribution pattern and density of Brazil nut trees in logged forest stands is unclear across the Amazon basin. We asked the following questions: (1) What are the densities and spatial distributions of Brazil nut juveniles (10 ≤ dbh < 40 cm) and adults (≥ 40 cm dbh) in three selectively logged Brazil nut concessions (1413 ha sampled) in Madre de Dios, Peru; (2) What is the spatial relationship between adults and juveniles (10 ≤ dbh < 30 cm); and (3) What is the spatial relationship between juveniles (10 ≤ dbh <30 cm) and cut stumps (≥ 10 y)? Spatial analyses were conducted using statistics derived from Ripley's K function. Juveniles were aggregated in all three concessions. Results for adult populations rejected the null hypothesis of a random distribution among trees ≥ 40 cm dbh. We did not find an attraction between juveniles and cut-stump locations, nor between adults and juveniles. The strong peaks of aggregation for juveniles and adult Brazil nuts in this study occurred at long distances (300–900 m), suggesting multiple tree canopy gaps as drivers of spatial distribution patterns, either via natural or anthropogenic sources. Our data contribute to a more thorough understanding of Brazil nut population structure in disturbed forests in south-western Amazonia. 2017-03 2018-07-03T11:03:06Z 2018-07-03T11:03:06Z Journal Article https://hdl.handle.net/10568/95503 en Limited Access Cambridge University Press Rockwell, Cara A., Guariguata, M.R., Menton, M., Arroyo Quispe, E., Quaedvlieg, J., Warren-Thomas, E., Fernandez Silva, H., Jurado Rojas, E.E., Kohagura Arrunátegui, J.A.H., Meza Vega, L.A., Quenta Hancco, R., Revilla Vera, O., Valera Tito, J.F., Villarroel Panduro, B.T., Yucra Salas, J.J.. 2017. Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon Journal of Tropical Ecology, 33 (2) : 114-127. https://doi.org/10.1017/S0266467416000614 |
| spellingShingle | forests trees brazil nuts spatial distribution multiple use forestry Rockwell, Cara A. Guariguata, Manuel R. Menton, M. Arroyo Quispe, E. Quaedvlieg, J. Warren-Thomas, E. Fernández Silva, H. Jurado Rojas, E.E. Kohagura Arrunátegui, J.A.H. Meza Vega, L.A. Quenta Hancco, R. Revilla Vera, O. Valera Tito, J.F. Villarroel Panduro, B.T. Yucra Salas, J.J. Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon |
| title | Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon |
| title_full | Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon |
| title_fullStr | Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon |
| title_full_unstemmed | Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon |
| title_short | Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon |
| title_sort | spatial distribution of bertholletia excelsa in selectively logged forests of the peruvian amazon |
| topic | forests trees brazil nuts spatial distribution multiple use forestry |
| url | https://hdl.handle.net/10568/95503 |
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