Species diversity, structure and dynamics of two populations of an endangered species, Magnolia dealbata (Magnoliaceae)
Fuente:
Redalyc
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad de Costa Rica
2006
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876469295680061440 |
|---|---|
| author | Lázaro R. Sánchez-Velásquez |
| author_facet | Lázaro R. Sánchez-Velásquez |
| contents | Species diversity, structure and dynamics of two populations of an endangered species, Magnolia dealbata (Magnoliaceae) Lázaro R. Sánchez-Velásquez María del Rosario Pineda-López Biología Mexico diversity population Cloud forest infrutescences Little is known about the ecology and demography of the genus Magnolia. Magnolia dealbata Zucc. is an endangered species endemic to Mexico. Two contrasting populations of M. dealbata (one from the grasslands and other from a secondary cloud forest) were studied. We asked the following questions: (a) Are size structure (diameter at breast height, DBH) and infrutescence production significantly different between the two populations? (b) What are the populations´ growth rates (λ) based on an initial 1987 study? (c) Are the associated species diversity indices of these M. dealbata populations significantly different? The results show no significant differences between the population size structure (p=.094); the growth rates of the populations were 0.992 in grassland and 1.053 in secondary cloud forest. The number of infrutescences produced in year 2001 and DBH relationship were significantly linear (p<.001) in both populations, and there was no significant difference (p>.01) between their slopes. The diversity indices were not significantly different (p>.05), and only 54% of the species were common to both sites. Our study suggests that both populations are relatively stable and that the management history could impact more on the species composition than on the diversity indices 2006 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44954333 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.54 |
| format | Artículo científico |
| id | redalyc_44954333 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Species diversity, structure and dynamics of two populations of an endangered species, Magnolia dealbata (Magnoliaceae) Lázaro R. Sánchez-Velásquez Biología Mexico diversity population Cloud forest infrutescences Species diversity, structure and dynamics of two populations of an endangered species, Magnolia dealbata (Magnoliaceae) Lázaro R. Sánchez-Velásquez María del Rosario Pineda-López Biología Mexico diversity population Cloud forest infrutescences Little is known about the ecology and demography of the genus Magnolia. Magnolia dealbata Zucc. is an endangered species endemic to Mexico. Two contrasting populations of M. dealbata (one from the grasslands and other from a secondary cloud forest) were studied. We asked the following questions: (a) Are size structure (diameter at breast height, DBH) and infrutescence production significantly different between the two populations? (b) What are the populations´ growth rates (λ) based on an initial 1987 study? (c) Are the associated species diversity indices of these M. dealbata populations significantly different? The results show no significant differences between the population size structure (p=.094); the growth rates of the populations were 0.992 in grassland and 1.053 in secondary cloud forest. The number of infrutescences produced in year 2001 and DBH relationship were significantly linear (p<.001) in both populations, and there was no significant difference (p>.01) between their slopes. The diversity indices were not significantly different (p>.05), and only 54% of the species were common to both sites. Our study suggests that both populations are relatively stable and that the management history could impact more on the species composition than on the diversity indices 2006 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44954333 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.54 |
| title | Species diversity, structure and dynamics of two populations of an endangered species, Magnolia dealbata (Magnoliaceae) |
| topic | Biología Mexico diversity population Cloud forest infrutescences |
| url | https://www.redalyc.org/articulo.oa?id=44954333 |