Riqueza y Distribución Ecológica de Especies de Pteridofitas en la Zona del Río Yavarí-Mirín, Amazonía Peruana
We studied the ecological distribution of pteridophytes (ferns and fern allies) along eight 8-km transects covering 12.7 ha in Peruvian Amazonia. Subunits of 200 m² of the transects have previously been classified into four different forest types, and here we document and quantify the floristic diff...
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| Published in | Biotropica Vol. 39; no. 5; pp. 637 - 646 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English Spanish |
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Malden, USA
Blackwell Publishing Inc
01.09.2007
Blackwell Publishing |
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| Abstract | We studied the ecological distribution of pteridophytes (ferns and fern allies) along eight 8-km transects covering 12.7 ha in Peruvian Amazonia. Subunits of 200 m² of the transects have previously been classified into four different forest types, and here we document and quantify the floristic differences among these forest types. Pteridophytes have been suggested as an indicator group to classify rain forest habitats, but this requires that the ecological preferences of the species are well documented and consistent across geographic regions. Here we analyzed in detail the distribution and diversity patterns of 130 species across the four rain forest types. Relative species abundance and species diversity were similar among some of the forest types and differed among others, but the species composition differed markedly. Our results largely confirmed the earlier interpretation of the edaphic preferences of the pteridophyte species in western Amazonia. This supports the proposition that deterministic processes have an important role in influencing the floristic composition of Amazonian forests. |
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| AbstractList | We studied the ecological distribution of pteridophytes (ferns and fern allies) along eight 8-km transects covering 12.7 ha in Peruvian Amazonia. Subunits of 200 m² of the transects have previously been classified into four different forest types, and here we document and quantify the floristic differences among these forest types. Pteridophytes have been suggested as an indicator group to classify rain forest habitats, but this requires that the ecological preferences of the species are well documented and consistent across geographic regions. Here we analyzed in detail the distribution and diversity patterns of 130 species across the four rain forest types. Relative species abundance and species diversity were similar among some of the forest types and differed among others, but the species composition differed markedly. Our results largely confirmed the earlier interpretation of the edaphic preferences of the pteridophyte species in western Amazonia. This supports the proposition that deterministic processes have an important role in influencing the floristic composition of Amazonian forests. ABSTRACT We studied the ecological distribution of pteridophytes (ferns and fern allies) along eight 8‐km transects covering 12.7 ha in Peruvian Amazonia. Subunits of 200 m 2 of the transects have previously been classified into four different forest types, and here we document and quantify the floristic differences among these forest types. Pteridophytes have been suggested as an indicator group to classify rain forest habitats, but this requires that the ecological preferences of the species are well documented and consistent across geographic regions. Here we analyzed in detail the distribution and diversity patterns of 130 species across the four rain forest types. Relative species abundance and species diversity were similar among some of the forest types and differed among others, but the species composition differed markedly. Our results largely confirmed the earlier interpretation of the edaphic preferences of the pteridophyte species in western Amazonia. This supports the proposition that deterministic processes have an important role in influencing the floristic composition of Amazonian forests. RESUMEN Estudiamos la distribución ecológica de las pteridofitas (helechos y plantas afines) a lo largo de ocho transectos de 8 km cada uno, cubriendo un área total de 12.7 ha en la Amazonía peruana. Subunidades de 200 m 2 de los transectos fueron anteriormente clasificadas en cuatro tipos diferentes de bosques, y aquí documentamos y cuantificamos las diferencias florísticas entre estos tipos de bosques. Las pteridofitas han sido recomendadas como un grupo indicador para clasificar los hábitat del bosque húmedo tropical, pero esto requiere que las preferencias ecológicas de las especies sean bien documentadas y consistentes a través de las regiones geográficas. Aquí analizamos en detalle los patrones de distribución y diversidad de 130 especies a través de los cuatro tipos de bosques. La abundancia relativa y la diversidad de especies fueron similares entre algunos de los tipos de bosque y diferentes entre otros, pero la composición florística difirió marcadamente. Nuestros resultados confirmaron en gran parte la previa interpretación de las preferencias edáficas de las especies de pteridofitas en la Amazonía occidental. Esto apoya la propuesta de que procesos deterministas influyen de manera importante en la composición florística de los bosques amazónicos. We studied the ecological distribution of pteridophytes (ferns and fern allies) along eight 8-km transects covering 12.7 ha in Peruvian Amazonia. Subunits of 200 m2 of the transects have previously been classified into four different forest types, and here we document and quantify the floristic differences among these forest types. Pteridophytes have been suggested as an indicator group to classify rain forest habitats, but this requires that the ecological preferences of the species are well documented and consistent across geographic regions. Here we analyzed in detail the distribution and diversity patterns of 130 species across the four rain forest types. Relative species abundance and species diversity were similar among some of the forest types and differed among others, but the species composition differed markedly. Our results largely confirmed the earlier interpretation of the edaphic preferences of the pteridophyte species in western Amazonia. This supports the proposition that deterministic processes have an important role in influencing the floristic composition of Amazonian forests. |
| Author | Halme y Hanna Tuomisto, Kati J Cárdenas, Glenda G |
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| References_xml | – volume: 32 start-page: 79 year: 1992 ident: e_1_2_6_28_1 article-title: Ferns as indicators of vegetation types in the Galapagos archipelago publication-title: Monogr. Syst. Bot MO. Bot. Gard. contributor: fullname: Van der Werff H. – ident: e_1_2_6_30_1 doi: 10.2307/2807552 – volume-title: Syn‐Tax 5.02. Mac. Computer programs for multivariate data analysis on the Macintosh system year: 1995 ident: e_1_2_6_14_1 contributor: fullname: Podani J. – start-page: 359 volume-title: Hunting for sustainability in tropical forests year: 2000 ident: e_1_2_6_2_1 contributor: fullname: Bodmer R. E. – start-page: 481 volume-title: Geoecología y desarrollo amazónico: estudio integrado en la zona de Iquitos year: 1998 ident: e_1_2_6_19_1 contributor: fullname: Tuomisto H. – ident: e_1_2_6_7_1 doi: 10.1007/s003380050237 – start-page: 253 volume-title: Geoecología y desarrollo amazónico: estudio integrado en la zona de Iquitos year: 1998 ident: e_1_2_6_15_1 contributor: fullname: Ruokolainen K. – volume-title: Mammal diversity and ecology of small mammals in Western Amazonia year: 2001 ident: e_1_2_6_27_1 contributor: fullname: Valqui M. – ident: e_1_2_6_9_1 doi: 10.1023/A:1008889803319 – ident: e_1_2_6_25_1 doi: 10.1890/1051-0761(2003)013[0352:LFPWSH]2.0.CO;2 – ident: e_1_2_6_26_1 doi: 10.1126/science.1078037 – volume: 20 start-page: 1 year: 1998 ident: e_1_2_6_10_1 article-title: Numerical ecology. Second English Edition publication-title: Developments in Environmental Modelling contributor: fullname: Legendre P. – ident: e_1_2_6_23_1 doi: 10.1111/j.1744-7429.2002.tb00571.x – start-page: 693 volume-title: Index Herbariorum. Part I. The herbaria of the world year: 1990 ident: e_1_2_6_6_1 contributor: fullname: Holmgren P. – ident: e_1_2_6_20_1 doi: 10.1046/j.1365-2699.1996.00044.x – ident: e_1_2_6_12_1 doi: 10.1046/j.1365-2745.2003.00815.x – ident: e_1_2_6_22_1 doi: 10.1111/j.1744-7429.1998.tb00073.x – volume-title: The unified neutral theory of biodiversity and biogeography. Monographs in Population Biology 32 year: 2001 ident: e_1_2_6_8_1 contributor: fullname: Hubbell S. P. – ident: e_1_2_6_24_1 doi: 10.1046/j.1365-2745.2003.00802.x – ident: e_1_2_6_4_1 doi: 10.1126/science.1066854 – ident: e_1_2_6_5_1 doi: 10.1111/j.1365-2745.2005.01020.x – ident: e_1_2_6_21_1 doi: 10.1126/science.269.5220.63 – ident: e_1_2_6_16_1 doi: 10.1017/S0266467400010439 – ident: e_1_2_6_13_1 – ident: e_1_2_6_17_1 doi: 10.1111/j.0906-7590.2004.03958.x – ident: e_1_2_6_3_1 – ident: e_1_2_6_29_1 doi: 10.1111/j.0022-0477.2004.00904.x – start-page: 35 volume-title: Geoecología y desarrollo Amazónico: estudio integrado en la zona de Iquitos year: 1998 ident: e_1_2_6_11_1 contributor: fullname: Marengo J. A. – ident: e_1_2_6_18_1 doi: 10.2307/3235634 |
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| SubjectTerms | ferns ferns and fern allies floristic analysis pteridophytes rain forest rain forests species distribution species diversity Tropical Biology |
| Title | Riqueza y Distribución Ecológica de Especies de Pteridofitas en la Zona del Río Yavarí-Mirín, Amazonía Peruana |
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