Estructura de la comunidad de colémbolos (Hexapoda: Collembola) en musgos corticícolas en el gradiente altitudinal de un bosque subhúmedo de México.

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Bibliographic Details
Title:	Estructura de la comunidad de colémbolos (Hexapoda: Collembola) en musgos corticícolas en el gradiente altitudinal de un bosque subhúmedo de México.
Alternate Title:	Structure of the Collembolan community (Hexapoda: Collembola) in bark mosses along an altitudinal gradient of a subhumid forest in Mexico.
Authors:	Cutz-Pool, Leopoldo Q.¹ cutzpool@yahoo.com, Palacios-Vargas, José G.¹, Castaño-Meneses, Gabriela¹
Source:	Revista de Biología Tropical. jun2008, Vol. 56 Issue 2, p739-748. 10p. 2 Charts, 3 Graphs.
Subjects:	COLLEMBOLA, APTERYGOTA, INSECTS, FOREST management
Geographic Terms:	MEXICO
Abstract (English):	The structure of the community of moss springtails on oak and fir bark in the forests at the NW slope of Iztaccíhuatl Volcano, State of Mexico, is analyzed. The study included four samplings (November 2003, March-June-August 2004), carried out in three altitudes I: 2 750 m, II: 2 930 and 3 250 m a.s.l. Calculated indexes were: species richness (S), Shannon's diversity index (H'), Pielou's evenness index (J') and Simpson dominance (λ). An ANOVA of two way test was used to evaluate the effect of altitude and sampling date on the total density of the springtails. The total number of species was 24 (altitude I=17, altitude II=14, altitude II=13). The greatest density was at altitude II and the highest species richness at altitude I. Americabrya arida and Willowsia mexicana were dominant. There is a positive significant effect of altitude on their density. The highest Sörensen similarity between communities was 59 % ( altitudes II and II). [ABSTRACT FROM AUTHOR]
Abstract (Spanish):	Se presentan datos sobre la estructura de la comunidad de colémbolos en musgos corticícolas, de un bosque de encino y abetos en la vertiente NW del Volcán Iztaccíhuatl, Estado de México, México. El estudio comprendió cuatro muestreos (noviembre de 2003, marzo, junio y agosto de 2004), realizados en tres altitudes I: 2 750 m; II : 2 930 m y III : 3 350 m snm. En cada altitud, se calculó la riqueza de especies (S), los índices de diversidad de Shannon (H'), Equitatividad de Pielou (J') y, dominancia de Simpson (λ). Se utilizó un análisis de varianza de dos vías (ANOVA) para evaluar el efecto de la altitud y fecha de muestreo, sobre la densidad total de los colémbolos. El número total de especies fue de 24, variando de 13 para la altitud mayor a 17 en la menor. La mayor densidad se encontró a mayor altitud. Americabrya arida y Willowsia mexicana fueron las especies dominantes, y se encontró un efecto positivo significativo de la altitud sobre sus densidades. La mayor similitud entre comunidades de acuerdo con el índice de Sörensen se presentó entre las altitudes II y II, con un 59%. [ABSTRACT FROM AUTHOR]
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Database:	MedicLatina

Description
Abstract:	The structure of the community of moss springtails on oak and fir bark in the forests at the NW slope of Iztaccíhuatl Volcano, State of Mexico, is analyzed. The study included four samplings (November 2003, March-June-August 2004), carried out in three altitudes I: 2 750 m, II: 2 930 and 3 250 m a.s.l. Calculated indexes were: species richness (S), Shannon's diversity index (H'), Pielou's evenness index (J') and Simpson dominance (λ). An ANOVA of two way test was used to evaluate the effect of altitude and sampling date on the total density of the springtails. The total number of species was 24 (altitude I=17, altitude II=14, altitude II=13). The greatest density was at altitude II and the highest species richness at altitude I. Americabrya arida and Willowsia mexicana were dominant. There is a positive significant effect of altitude on their density. The highest Sörensen similarity between communities was 59 % ( altitudes II and II). [ABSTRACT FROM AUTHOR]
ISSN:	00347744