Effect of sunlight intensity and canopy coverage on herbivory in Gunnera insignis (Gunneraceae)


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Citation
Effect of sunlight intensity and canopy coverage on herbivory in Gunnera insignis (Gunneraceae)

Material Information

Title:
Effect of sunlight intensity and canopy coverage on herbivory in Gunnera insignis (Gunneraceae)
Translated Title:
Efecto de la intensidad de la luz solar y la cobertura del dosel en la herbivoría en Gunnera insignis (Gunneraceae)
Creator:
Rivers, Carolyn
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Herbivores--Ecology ( lcsh )
Herbívoros--Ecología ( lcsh )
Cloud forest ecology ( lcsh )
Ecología del bosque nuboso ( lcsh )
Costa Rica--Puntarenas--Monteverde Zone
Costa Rica--Puntarenas--Zona de Monteverde
CIEE Spring 2008
CIEE Primavera 2008
Genre:
Reports

Notes

Abstract:
Studies on the influence of sunlight on herbivory have generally revealed that increased amounts of leaf damage occur in cool, shaded habitats. This study investigates the effects of both sunlight and canopy coverage on herbivore damage in Gunnera insignis by the undescribed beetle Macrohaltica sp. (Coleoptera: Chrysomelidae). This beetle is thought to feed on G. insignis because it can obtain secondary metabolites that make it undesirable to predators. In this investigation, all 90 plants studied revealed herbivore damage, with 71% of plants showing evidence of herbivory on the majority of leaves. The highest levels of leaf damage occurred on plants in both high light and high shade habitats, while those in moderate sunlight conditions revealed reduced herbivore damage. Resource availability, nutritional quality, and plant defenses influenced by sunlight could account for the variation in leaf consumption on G. insignis. Because light environment influences a number of factors related to the survival of a plant, the effects of sunlight on herbivory are complex and require further investigation. ( English, Español, )
Abstract:
Estudios previos en la influencia de la luz solar en la herbivoría generalmente han mostrado un mayor daño en las hojas ocurriendo en hábitats fríos y con sombra. Este estudio investiga el efecto de ambos, la luz solar y la cobertura del dosel en el daño de herbívoros en Gunnera insignis por el escarabajo Macrohaltica sp. (Coleoptera: Chrysomelidae).
Biographical:
Student affiliation: Department of Biology, Wofford College
General Note:
Born Digital

Record Information

Source Institution:
Monteverde Institute
Holding Location:
Monteverde Institute
Rights Management:
This item is licensed with the Creative Commons Attribution Non-Commercial No Derivative License. This license allows others to download this work and share them with others as long as they mention the author and link back to the author, but they can’t change them in any way or use them commercially.
Resource Identifier:
M39-00025 ( USFLDC DOI )
m39.25 ( USFLDC Handle )

Postcard Information

Format:
Book

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Full Text
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Efecto de la intensidad de la luz solar y la cobertura del dosel en la herbivora en Gunnera insignis (Gunneraceae)
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Effect of sunlight intensity and canopy coverage on herbivory in Gunnera insignis (Gunneraceae)
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Studies on the influence of sunlight on herbivory have generally revealed that increased amounts of leaf damage occur in cool, shaded habitats. This study investigates the effects of both sunlight and canopy coverage on herbivore damage in Gunnera insignis by the undescribed beetle Macrohaltica sp. (Coleoptera: Chrysomelidae). This beetle is thought to feed on G. insignis because it can obtain secondary metabolites that make it undesirable to predators. In this investigation, all 90 plants studied revealed herbivore damage, with 71% of plants showing evidence of herbivory on the majority of leaves. The highest levels of leaf damage occurred on plants in both high light and high shade habitats, while those in moderate sunlight conditions revealed reduced herbivore damage. Resource availability, nutritional quality, and plant defenses influenced by sunlight could account for the variation in leaf consumption on G. insignis. Because light environment influences a number of factors related to the survival of a plant, the effects of sunlight on herbivory are complex and require further investigation.
Estudios previos en la influencia de la luz solar en la herbivora generalmente han mostrado un mayor dao en las hojas ocurriendo en hbitats fros y con sombra. Este estudio investiga el efecto de ambos, la luz solar y la cobertura del dosel en el dao de herbvoros en Gunnera insignis por el escarabajo Macrohaltica sp. (Coleoptera: Chrysomelidae).
546
Text in English.
650
Herbivores--Ecology--Costa Rica--Puntarenas--Monteverde Zone
Cloud forest ecology--Costa Rica
4
Herbvoros--Ecologa--Costa Rica--Puntarenas--Zona de Monteverde
Ecologa del bosque nuboso--Costa Rica
653
Tropical Ecology 2008
Effect of sunlight
Poorman's umbrella--Costa Rica
Ecologa Tropical 2008
Effecto de la luz solar
Paraguas de Poorman--Costa Rica
655
Reports
720
CIEE
773
t Monteverde Institute : Tropical Ecology
856
u http://digital.lib.usf.edu/?m39.25


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