Effects of selective logging on vascular epiphyte diversity in a moist lowland forest of Eastern Himalaya, India

Padmawathe, R.; Qureshi, Qamar; Rawat, G. S.

doi:10.1016/j.biocon.2003.10.024

Cited by 54 publications

(56 citation statements)

References 15 publications

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“…This was also the environment most colonized by those species for which only one individual was recorded in the study area (64.8%) and was the environment where there was the greatest occurrence of unique species (57 species). Water availability is a limiting factor for the establishment and survival of epiphytes (Padmawathe et al 2004), and during periods of low rainfall the floodplains accumulate more moisture compared to plateaus and hillsides-a fact that may favor epiphytic colonization of these environments.…”

Section: Resultsmentioning

confidence: 99%

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia

et al. 2013

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10 cm) were sampled. We recorded 3.528 individuals in 13 families, 48 genera and 164 species. Araceae was the most prevalent family with regard to the importance value and stood out in all related parameters, followed by Bromeliaceae, Cyclanthaceae and Orchidaceae. The species with the highest epiphytic importance values were Guzmania lingulata (L.) Mez. and Philodendron linnaei Kunth. The predominant life form was hemiepiphytic. Estimated floristic diversity was 3.2 (H'). The studied epiphytic community was distributed among 727 host plants belonging to 40 families, 123 genera and 324 species. One individual of Guarea convergens T.D. Penn. was the host with the highest richness and abundance of epiphytes. Stems/trunks of host plants were the most colonized segments, and the most favorable habitat for epiphytism was the lowlands, where 84.1% of species and 48.2% of epiphytic specimens were observed.]]>

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Section: Resultsmentioning

confidence: 99%

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia

et al. 2013

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“…Padmawathe et al (2004) registraron una reducción significativa en la riqueza y abundancia de epífitas vasculares (excepto orquídeas) en un bosque húmedo de tierras bajas sometido a explotación en la India; ellos atribuyen esta reducción a alteraciones en los microclimas, características de los sustratos y cobertura del dosel. Según Ochoa (1998), los árboles de gran porte al caer generan daños mecánicos a la vegetación arbórea circundante, promoviendo además, el arrastre de elementos trepadores que interconectan la masa boscosa.…”

Section: Resultados Y Discusiónunclassified

“…Al respecto, Bryant et al (1997) comentan que la explotación forestal de bos-ques naturales constituye una de las principales amenazas para la conservación de la diversidad biológica en la región tropical. Algunos autores argumentan que la extracción de maderas de bosques naturales reduce la complejidad estructural de la vegetación (Cannon et al 1994;Ochoa, 1998;Padmawathe et al 2004), induce cambios en la adecuación de las comunidades de animales silvestres (Johns, 1988;Aleixo, 1999;Ochoa, 2000;Bin Hussin y Francis, 2001;Ghazoul y Hill, 2001;Ochoa y Soriano, 2001;Plumptre y Grieser, 2001;Soriano y Ochoa, 2001;Vitt y Caldwell, 2001) y genera reducción de las fuentes de agua, fragmentación del hábitat y erosión de los suelos (Laurance et al 2001).…”

Section: Introductionunclassified

“…Según algunos autores, los cambios en la estructura de la vegetación inducidos por la explotación forestal, podrían redundar en un menor aporte de recursos fundamentales para animales silvestres, sobre todo aquellas especies dependientes de los estratos superiores del bosque (Johns, 1988(Johns, , 1992Thiollay, 1992;Frumhoff 1995;Mason, 1996;Ochoa, 1997;Bin Hussin y Francis, 2001;Ghazoul y Hill, 2001;Ochoa y Soriano, 2001;Plumptre y Grieser, 2001;Soriano y Ochoa, 2001). Los resultados de este trabajo soportan los reportes de otros autores, en los que se plantea que la extracción de maderas desde bosques naturales genera cambios sustanciales sobre su estructura y composición, y la consecuente pérdida de hábitats y recursos indispensables para la supervivencia de la fauna que en ellos habita, especialmente aquella que depende del dosel (Uhl y Vieira, 1989;Cannon et al 1994, Killeen et al 1998Ochoa 1998;Fredericksen 2000;Padmawathe et al 2004). Serán necesarias futuras investigaciones para comprender mejor los efectos del uso forestal de los bosques naturales del Chocó, en función de buscar las mejores herramientas y técnicas que permitan su aprovechamiento y conservación.…”

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Efectos de la extracción forestal sobre la estructura y composición de un bosque pluvial del Pacífico colombiano

Bonilla-Luna

Cuesta-Córdoba

Valois-Cuesta

2012

Rev. Biodivers. Neotrop.

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ResumenSe describen los impactos más evidentes de la tala selectiva de árboles sobre la estructura y composición de un bosque pluvial tropical de tierras bajas en el corregimiento de San Isidro (Chocó, Colombia). Se realizaron inventarios de vegetación en 10 parcelas de 2 x 50 metros (0.1 ha) ubicadas dentro de un bosques no intervenido y en otras 10 parcelas de similares dimensiones pero ubicadas en un bosque usado para extraer madera selectivamente. Se registró un mayor número de especies, géne-ros y familias de plantas leñosas en el bosque natural que en el bosque afectado por la extracción selectiva de maderas; también los elementos arbóreos que dominan el dosel, como también el número de especies y géneros de las 10 familias más representativas encontradas en el bosque natural, se vieron reducidos en el bosque afectado por la tala selectiva. Este proceso de reducción de la complejidad estructural del bosque en el área de estudio, seguro redunda negativamente en la dinámica de las poblaciones de fauna que en ellos habita, sobre todo aquellos animales dependientes de los estratos superiores del bosque.Palabras clave: Bosque pluvial tropical de tierras bajas; Chocó; Colombia; San Isidro; Tala selectiva. AbstractHerein, we described the most evident effects of selective logging on the structure and composition of a lowland tropical rain forest in San Isidro, Chocó, Colombia. Structure and composition of woody elements from 10 plots (2 x 50 meters = 0.1 ha) located in a natural forest and 10 plots (2 x 50 meters = 0.1 ha) located in a forest used for selective logging was analyzed. We report a greater number of species, genera and families of woody plants in the natural forest than in forest with selective logging. In addition, forest where selective logging takes place experienced a significant reduction in number of canopy-dominant trees, as well as in number of species and genera of the 10 more representative families found in the analyzed natural forest. We predict that this documented reduction in the natural forest structural complexity will have a deleterious impact on the population dynamics of fauna in the study area, particularly on canopy-dependent fauna.

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“…The conditions of light, air humidity, temperature, and physical variants provided by host trees create microenvironments that affect the spatial distribution patterns and settlement of epiphytic bromeliads in a forest (Zotz and Vollrath 2003, Padmawathe et al 2004, Zotz and Schultz 2008, Hayasaka et al 2012, Cach-Pérez et al 2013). In the mangrove of Itapanhaú river, the distribution of bromeliads was more affected by the characteristics of the host tree than by the distance to the waterline.…”

Section: Discussionmentioning

confidence: 99%

Diversity and distribution of epiphytic bromeliads in a Brazilian subtropical mangrove

Sousa

Colpo²

2017

An. Acad. Bras. Ciênc.

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It is not unusual to find epiphytic bromeliads in mangroves, but most studies on mangrove vegetation do not record their presence. This study aimed to evaluate the diversity and distribution of epiphytic bromeliads in a subtropical mangrove. The richness, abundance and life form (atmospheric and tank) of bromeliads were recorded and compared among host tree species and waterline proximity. The effects of diameter and height of host trees on the abundance of bromeliads were also assessed. The mangrove was composed of Avicennia schaueriana, Laguncularia racemosa and Rhizophora mangle. We recorded seven bromeliad species of the genera Tillandsia and Vriesea. The waterline proximity did not affect the abundance or diversity of bromeliads, but atmospheric forms were predominant near the waterline, whereas tank bromeliads were more frequent in the interior of the mangrove. The three mangrove species hosted bromeliads, but L. racemosa was the preferred host. The species composition showed that the distribution of bromeliads is more related to the host species than to the distance from the waterline. Bromeliad abundance increased with tree size. Bromeliads can be biological indicators of ecosystem health; therefore, inventories and host tree preferences are necessary knowledge for an adequate management of sensitive ecosystems as mangroves.

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Effects of selective logging on vascular epiphyte diversity in a moist lowland forest of Eastern Himalaya, India

Cited by 54 publications

References 15 publications

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia

Efectos de la extracción forestal sobre la estructura y composición de un bosque pluvial del Pacífico colombiano

Diversity and distribution of epiphytic bromeliads in a Brazilian subtropical mangrove

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