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No. de sistema: 000058768

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 180517m20179999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
044 _ _ a| xx
100 1 _ a| Sánchez Velásquez, Lázaro Rafael
e| coaut.
245 1 0 a| Moderate anthropogenic disturbance does not affect the demography of Magnolia schiedeana, an endangered species from Mexico
506 _ _ a| Acceso electrónico sólo para usuarios de ECOSUR
520 1 _ a| Among the many Magnolia species that are endangered by anthropogenic disturbance, some are knownto have the capacity to produce new shoots. Demographic studies are an important tool to evaluate the impact of disturbances as well as the resilience and resistance of endangered species. Our study lookedat the demographic dynamics of two Magnolia schiedeana populations, with an aim to determine therole played by disturbances. The questions were: 1) what demographic trends characterize this species? 2) What differences are there between disturbed and undisturbed populations? 3) Is M. schiedeana adisturbance-resilient species in general? 4) How important is the contribution of the resprouting trait to λ in a population under anthropogenic disturbance? The demographic attributes evaluated were: elasticity, population growth rate (λ), and sensitivity to concrete disturbances (LTRE, Life Table Response Experiment). The results indicated that the λ of the two populations did not differ significantly. The transitions that contributed the most to λ and presented the largest variation were similar in both population sunder study. More than 90% of the contribution came from those individuals measuring ≤ 5 cm in diameter. Surprisingly, M. schiedeana is not sensitive to moderate anthropogenic disturbance. Resprouting contributed to with less than 0.2%.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Magnolia schiedeana
650 _ 4 a| Plantas
650 _ 4 a| Población vegetal
650 _ 4 a| Actividades antropogénicas
650 _ 4 a| Bosque de niebla
651 _ 4 a| Veracruz de Ignacio de la Llave (México)
700 1 _ a| Vásquez Morales, Suria Gisela
700 1 _ a| Pineda López, María del Rosario
e| coaut.
700 1 _ a| Díaz Fleischer, Francisco
e| coaut.
700 1 _ a| Flores Estévez, Norma
e| coaut.
700 1 _ a| Viveros Viveros, Héctor
e| coaut.
773 0 _
t| Flora
g| Vol. 234, no. 3 (September 2017), p. 77-83
x| 0367-2530
902 _ _ a| GOG / MM
904 _ _ a| Mayo 2018
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
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Moderate anthropogenic disturbance does not affect the demography of Magnolia schiedeana, an endangered species from Mexico
Sánchez Velásquez, Lázaro Rafael (coaut.)
Vásquez Morales, Suria Gisela (autor)
Pineda López, María del Rosario (autor)
Díaz Fleischer, Francisco (autor)
Flores Estévez, Norma (autor)
Viveros Viveros, Héctor (autor)
Nota: Acceso electrónico sólo para usuarios de ECOSUR
Contenido en: Flora. Vol. 234, no. 3 (September 2017), p. 77-83. ISSN: 0367-2530
No. de sistema: 58768
Tipo: Artículo
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"Among the many Magnolia species that are endangered by anthropogenic disturbance, some are knownto have the capacity to produce new shoots. Demographic studies are an important tool to evaluate the impact of disturbances as well as the resilience and resistance of endangered species. Our study lookedat the demographic dynamics of two Magnolia schiedeana populations, with an aim to determine therole played by disturbances. The questions were: 1) what demographic trends characterize this species? 2) What differences are there between disturbed and undisturbed populations? 3) Is M. schiedeana adisturbance-resilient species in general? 4) How important is the contribution of the resprouting trait to λ in a population under anthropogenic disturbance? The demographic attributes evaluated were: elasticity, population growth rate (λ), and sensitivity to concrete disturbances (LTRE, Life Table Response Experiment). The results indicated that the λ of the two populations did not differ significantly. The transitions that contributed the most to λ and presented the largest variation were similar in both population sunder study. More than 90% of the contribution came from those individuals measuring ≤ 5 cm in diameter. Surprisingly, M. schiedeana is not sensitive to moderate anthropogenic disturbance. Resprouting contributed to with less than 0.2%."


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