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No. de sistema: 000046143

LDR _ _ 00000nab^^2200000za^4500
008 _ _ 080630m20069999cr^qr^p^^^^^^z0^^^a|eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-tb
044 _ _ a| cr
245 0 0 a| Presence of exotic and native earthworms in principal agro- and natural systems in central and southeastern Tabasco, Mexico
520 1 _ a| Native and exotic earthworm species were inventoried in natural and managed ecosystems in Tabasco, southeastern Mexico. Twenty-four sites were evaluated: 17 agroecosystems and 7 natural systems. In our sampling we implemented the Tropical Soil Biology and Fertility protocol, and depending on landuse, 10 to 50 monoliths of 25 × 25 × 30 cm were completed to measure soil properties, earthworm biomass, density and richness per site. An ANOVA for non-parametric data was performed to determine significant differences among sites. The highest organic matter content (11.9 ± 5.7%), total nitrogen (0.66 ± 0.2%), and extractable phosphorus (18 ± 7.56 mgkg−1) were in the tropical rain forest. The highest earthworm biomass (52.4 ± 20.1 gm−2) was in diversified cultivation (Cedrela odorata plantation) and non-diversified crops (mango culture). The highest diversity was in a tropical rain forest, primary vegetation, with 6 ± 2 species and a Shannon Index of 1.43 ± 0.43. Twelve species, 8 native, Megascolecidae and 4 exotics were identified: 2 each, Megascolecidae and Glossoscolecidae. Native earthworm distribution was determined by land-use: an increase in primary vegetation had an increase in native species presence. In this study, native earthworm density was significantly correlated with clay content (r Spearman 0.5; p < 0.05). The dominant exotic species were the cosmopolitan Pontoscolex corethrurus and Polypheretima elongata. These were in 9 and 5 sites, respectively. Native earthworm species were only in natural sites, with the exception of Lavellodrilus bonampakensis and Balanteodrilus pearsei which were also observed in agroecosystems.
650 _ 4 a| Lombrices de tierra
650 _ 4 a| Especies nativas
650 _ 4 a| Especies introducidas
650 _ 4 a| Acanthodrilidae
650 _ 4 a| Glossoscolecidae
650 _ 4 a| Polypheretima elongata
650 _ 4 a| Pontoscolex corethrurus
651 _ 4 a| Tabasco (México)
700 1 _ a| Huerta Lwanga, Esperanza
c| Dra.
700 1 _ a| Fragoso González, Carlos Enrique
e| coaut.
n| 6603850412
700 1 _ a| Rodríguez Olan, Jannet
e| coaut.
700 1 _ a| Evia Castillo, María Isabel
e| coaut.
700 1 _ a| Montejo Meneses, Efraín
e| coaut.
700 1 _ a| de la Cruz Mondragon, M.
e| coaut.
700 1 _ a| García Hernández, Roberto
e| coaut.
773 0 _
t| Caribbean Journal of Science
g| Vol. 42, no. 3 (2006), p. 359-365
x| 0008-6452
856 4 1 u| http://caribjsci.org/dec06special/42_359-365.pdf
z| Artículo electrónico
900 _ _ a| En hemeroteca, SIBE-Chetumal
902 _ _ a| AM/DPH/Brenda
904 _ _ a| Junio 2008
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Biblioelectrónica
LNG eng
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*En hemeroteca, SIBE-Chetumal
Presence of exotic and native earthworms in principal agro- and natural systems in central and southeastern Tabasco, Mexico
Huerta Lwanga, Esperanza (autor)
Fragoso González, Carlos Enrique (autor)
Rodríguez Olan, Jannet (autor)
Evia Castillo, María Isabel (autor)
Montejo Meneses, Efraín (autor)
de la Cruz Mondragon, M. (autor)
García Hernández, Roberto (autor)
Contenido en: Caribbean Journal of Science. Vol. 42, no. 3 (2006), p. 359-365. ISSN: 0008-6452
Bibliotecas:
Chetumal
No. de sistema: 46143
Tipo: Artículo
PDF


Inglés

"Native and exotic earthworm species were inventoried in natural and managed ecosystems in Tabasco, southeastern Mexico. Twenty-four sites were evaluated: 17 agroecosystems and 7 natural systems. In our sampling we implemented the Tropical Soil Biology and Fertility protocol, and depending on landuse, 10 to 50 monoliths of 25 × 25 × 30 cm were completed to measure soil properties, earthworm biomass, density and richness per site. An ANOVA for non-parametric data was performed to determine significant differences among sites. The highest organic matter content (11.9 ± 5.7%), total nitrogen (0.66 ± 0.2%), and extractable phosphorus (18 ± 7.56 mgkg−1) were in the tropical rain forest. The highest earthworm biomass (52.4 ± 20.1 gm−2) was in diversified cultivation (Cedrela odorata plantation) and non-diversified crops (mango culture). The highest diversity was in a tropical rain forest, primary vegetation, with 6 ± 2 species and a Shannon Index of 1.43 ± 0.43. Twelve species, 8 native, Megascolecidae and 4 exotics were identified: 2 each, Megascolecidae and Glossoscolecidae. Native earthworm distribution was determined by land-use: an increase in primary vegetation had an increase in native species presence. In this study, native earthworm density was significantly correlated with clay content (r Spearman 0.5; p < 0.05). The dominant exotic species were the cosmopolitan Pontoscolex corethrurus and Polypheretima elongata. These were in 9 and 5 sites, respectively. Native earthworm species were only in natural sites, with the exception of Lavellodrilus bonampakensis and Balanteodrilus pearsei which were also observed in agroecosystems."

SIBE Chetumal
Codigo de barra
Estado
Colección
46143-10
(Disponible)
Artículos de investigación ECOSUR