Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos arch
This study identifies a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary between the Marañón-Pastaza flood plain and the Iquitos Arch, in the northern Peruvian Amazon. The area sampled covers 35,5 ha in the form of 9 transects 1-3 km long × 20 m wide....
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| Format: | Article |
| Language: | English |
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Universidad Nacional Mayor de San Marcos
2014-03-01
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| Series: | Revista Peruana de Biología |
| Subjects: | |
| Online Access: | http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/3073 |
| _version_ | 1819065651971489792 |
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| author | Víctor Vargas Paredes Jean-Christophe Pintaud |
| author_facet | Víctor Vargas Paredes Jean-Christophe Pintaud |
| author_sort | Víctor Vargas Paredes |
| collection | DOAJ |
| description | This study identifies a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary between the Marañón-Pastaza flood plain and the Iquitos Arch, in the northern Peruvian Amazon. The area sampled covers 35,5 ha in the form of 9 transects 1-3 km long × 20 m wide. All Astrocaryum individuals were recorded within the transects, and their size was measured as well as topographical data of the environment. The results show that the two species meet only in a small area in the confluence zone of Marañón and Tigre rivers near the southwest basement of the Iquitos Arch. A total of 1133 Astrocaryum individuals were recorded, mostly in the 0—3,90 m size classes, with only 9,2% of the individuals exceeding 12 m in high. Within the three topographical positions considered (slope, valley bottom and ridge), most individuals were found in the lower slopes and bottoms of valleys. |
| first_indexed | 2024-12-21T15:49:52Z |
| format | Article |
| id | doaj.art-a016e0a379c547f28ee54df030cdbc9e |
| institution | Directory Open Access Journal |
| issn | 1561-0837 1727-9933 |
| language | English |
| last_indexed | 2024-12-21T15:49:52Z |
| publishDate | 2014-03-01 |
| publisher | Universidad Nacional Mayor de San Marcos |
| record_format | Article |
| series | Revista Peruana de Biología |
| spelling | doaj.art-a016e0a379c547f28ee54df030cdbc9e2022-12-21T18:58:16ZengUniversidad Nacional Mayor de San MarcosRevista Peruana de Biología1561-08371727-99332014-03-0115307908310.15381/rpb.v15i3.30732736Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos archVíctor Vargas Paredes0Jean-Christophe Pintaud1Institut de Recherche pour le Développement (IRD), Perú. Apartado postal: Casilla 18-1209, Lima 18, Perú.Institut de Recherche pour le Développement (IRD), Perú. UMR DIA-PC/DYNADIV, BP 64501, 34394 Montpellier Cedex 5, France.This study identifies a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary between the Marañón-Pastaza flood plain and the Iquitos Arch, in the northern Peruvian Amazon. The area sampled covers 35,5 ha in the form of 9 transects 1-3 km long × 20 m wide. All Astrocaryum individuals were recorded within the transects, and their size was measured as well as topographical data of the environment. The results show that the two species meet only in a small area in the confluence zone of Marañón and Tigre rivers near the southwest basement of the Iquitos Arch. A total of 1133 Astrocaryum individuals were recorded, mostly in the 0—3,90 m size classes, with only 9,2% of the individuals exceeding 12 m in high. Within the three topographical positions considered (slope, valley bottom and ridge), most individuals were found in the lower slopes and bottoms of valleys.http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/3073Astrocaryum urostachysAstrocaryum macrocalyxarco de Iquitoscontacto parapátricotransectos. |
| spellingShingle | Víctor Vargas Paredes Jean-Christophe Pintaud Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos arch Revista Peruana de Biología Astrocaryum urostachys Astrocaryum macrocalyx arco de Iquitos contacto parapátrico transectos. |
| title | Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos arch |
| title_full | Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos arch |
| title_fullStr | Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos arch |
| title_full_unstemmed | Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos arch |
| title_short | Characterization of a parapatric contact zone between Astrocaryum macrocalyx and Astrocaryum urostachys at the boundary of the Marañón-Pastaza flood plain and the Iquitos arch |
| title_sort | characterization of a parapatric contact zone between astrocaryum macrocalyx and astrocaryum urostachys at the boundary of the maranon pastaza flood plain and the iquitos arch |
| topic | Astrocaryum urostachys Astrocaryum macrocalyx arco de Iquitos contacto parapátrico transectos. |
| url | http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/3073 |
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