A comparison of moth diversity and abundance along an altitudinal gradient in Monteverde, Costa Rica


previous item | next item

Citation
A comparison of moth diversity and abundance along an altitudinal gradient in Monteverde, Costa Rica

Material Information

Title:
A comparison of moth diversity and abundance along an altitudinal gradient in Monteverde, Costa Rica
Translated Title:
Una comparación de la diversidad de mariposas nocturnas y la abundancia a lo largo de un gradiente altitudinal en Monteverde, Costa Rica
Creator:
Swartz, Katie
Publication Date:
Language:
Text in English

Subjects

Subjects / Keywords:
Moths ( lcsh )
Polillas ( lcsh )
Species diversity ( lcsh )
Diversidad de especies ( lcsh )
Altitudes--Measurement ( lcsh )
Altitud--Medida ( lcsh )
Costa Rica--Puntarenas--Monteverde Zone
Costa Rica--Puntarenas--Zona de Monteverde
CIEE Summer 2004
CIEE Verano 2004
Genre:
Reports

Notes

Abstract:
Costa Rica has high moth (Lepidoptera) diversity, with relatively little known about its distribution (Hanson 2000). Insects tend to decrease in richness and abundance along an altitudinal gradient (Brehm and Fiedler 2003). Lepidopterans are important indicators of environmental health, important herbivores, vital prey species, and a large draw for the country’s main source of income, ecotourists. The purpose of this study was to compare moth diversity and abundance at varying altitudes. Moths were trapped using an ultra violet light and a sheet at three different altitudes (1530 m, 1639 m, and 1759 m) over six nights between July 26th and August 2nd, 2004, in the forest behind the Estación Biológica, Monteverde, Costa Rica. One hundred and seventy-one moths were caught, representing 76 morphospecies. The lowest elevation had the greatest species diversity as well as the greatest total number of moths (H’=1.553, 69 moths), followed by the highest elevation (H’=1.528, 67 moths). Both the lowest diversity (H’=1.318) and the lowest number of moth individuals (35 moths) were collected at the middle elevation. The diversity was significantly different between the lowest and the middle elevation (t=3.91, p=< 0.002) and between the middle and the highest elevation (t=3.33, p= < 0.002) and was not significantly different between the lowest and highest elevation. The largest amount of species overlap was found between the lowest and the middle elevations (J= 0.60). The study did not support the hypothesis that there would be less diversity and abundance of moths as elevation increased. It does, however, seem to indicate that there is a difference in the species found at each elevation. Additionally, the study seems to indicate that there were factors at the middle elevation that reduced the moth abundance and diversity relative to the highest and lowest elevations. Further studies are necessary to determine whether or not the distribution trends observed are specific to the sites, time of year, or sampling nights during this study. ( ,, )
Abstract:
Costa Rica tiene una alta diversidad de mariposas nocturnas (Lepidoptera), con relativamente poco conocido acerca de su distribución. Los insectos tienden a disminuir en riqueza y abundancia a lo largo de un gradiente altitudinal. Los lepidópteros son indicadores importantes de la salud del medio ambiente, los herbívoros importantes, presas vitales, y un gran atractivo para la principal fuente de divisas del país, los ecoturistas. El propósito de este estudio fue comparar la diversidad y abundancia de mariposas nocturnas en varias altitudes. Las mariposas se atraparon usando una luz ultravioleta y una sábana en tres diferentes elevaciones (1530 m, 1639 m, y 1759 m) durante seis noches entre el 26 de Julio y el 2 de agosto del 2004, en el bosque detrás de la Estación biológica de Monteverde, Costa Rica. Se capturó ciento setenta y un mariposas nocturnas, representando 76 morfoespecies, 64% de las cuales fueron únicas a la elevación en que fueron colectadas. La elevación más baja tuvo la mayor diversidad de especies así como el mayor número de mariposas nocturnas (H’=1.553, 69 mariposas nocturnas), seguida de la elevación más alta (H’=1.528, 67 mariposas nocturnas). Tanto la diversidad más baja como el número más bajo de mariposas nocturnas individuales (H’=1.318, 35 mariposas) fueron colectados en la elevación mediana. La diversidad fue significativamente diferente entre las elevaciones más baja y mediana (t=3.91, p=< 0.002) y entre las elevaciones mediana y más alta (t=3.33, p= < 0.002). El mayor traslape de especies se encontró entre las elevaciones más baja y la mediana (J= 0.60). El estudio no apoya la hipótesis de que habría menos diversidad y abundancia de mariposas nocturnas en tanto la elevación aumentaba. Más bien, el estudio parece indicar que hubo factores en la elevación mediana que redujeron la abundancia y diversidad de mariposas nocturnas en relación con las elevaciones más alta y la más baja. Se necesita estudios futuros para determinar si las tendencias de distribución observadas son específicas para los lugares, época del año, o para las noches de colecta durante este estudio.
Biographical:
Student Affiliation: Department of Biology-Environmental Studies, Whitman College
Acquisition:
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:
M39-00180 ( USFLDC DOI )
m39.180 ( USFLDC Handle )

Postcard Information

Format:
Book

Downloads

This item has the following downloads:


Full Text
xml version 1.0 encoding UTF-8 standalone no
record xmlns http:www.loc.govMARC21slim xmlns:xlink http:www.w3.org1999xlink xmlns:xsi http:www.w3.org2001XMLSchema-instance
leader 00000nas 2200000Ka 4500
controlfield tag 008 000000c19749999pautr p s 0 0eng d
datafield ind1 8 ind2 024
subfield code a M39-00399
040
FHM
0 041
eng
049
FHmm
1 100
Swartz, Katie
242
Una comparacin de la diversidad de mariposas nocturnas y la abundancia a lo largo de un gradiente altitudinal en Monteverde, Costa Rica
245
A comparison of moth diversity and abundance along an altitudinal gradient in Monteverde, Costa Rica
260
c 2004-08
500
Born Digital
3 520
Costa Rica has high moth (Lepidoptera) diversity, with relatively little known about its distribution (Hanson 2000). Insects tend to decrease in richness and abundance along an altitudinal gradient (Brehm and Fiedler 2003). Lepidopterans are important indicators of environmental health, important herbivores, vital prey species, and a large draw for the countrys main source of income, ecotourists. The purpose of this study was to compare moth diversity and abundance at varying altitudes. Moths were trapped using an ultra violet light and a sheet at three different altitudes (1530 m, 1639 m, and 1759 m) over six nights between July 26th and August 2nd, 2004, in the forest behind the Estacin Biolgica, Monteverde, Costa Rica. One hundred and seventy-one moths were caught, representing 76 morphospecies. The lowest elevation had the greatest species diversity as well as the greatest total number of moths (H=1.553, 69 moths), followed by the highest elevation (H=1.528, 67 moths). Both the lowest diversity (H=1.318) and the lowest number of moth individuals (35 moths) were collected at the middle elevation. The diversity was significantly different between the lowest and the middle elevation (t=3.91, p=< 0.002) and between the middle and the highest elevation (t=3.33, p= < 0.002) and was not significantly different between the lowest and highest elevation. The largest amount of species overlap was found between the lowest and the middle elevations (J= 0.60). The study did not support the hypothesis that there would be less diversity and abundance of moths as elevation increased. It does, however, seem to indicate that there is a difference in the species found at each elevation. Additionally, the study seems to indicate that there were factors at the
middle elevation that reduced the moth abundance and diversity relative to the highest and lowest elevations. Further studies are necessary to determine whether or not the distribution trends observed are
specific to the sites, time of year, or sampling nights during this study.
Costa Rica tiene una alta diversidad de mariposas nocturnas (Lepidoptera), con relativamente poco conocido acerca de su distribucin. Los insectos tienden a disminuir en riqueza y abundancia a lo largo de un gradiente altitudinal. Los lepidpteros son indicadores importantes de la salud del medio ambiente, los herbvoros importantes, presas vitales, y un gran atractivo para la principal fuente de divisas del pas, los ecoturistas. El propsito de este estudio fue comparar la diversidad y abundancia de mariposas nocturnas en varias altitudes. Las mariposas se atraparon usando una luz ultravioleta y una sbana en tres diferentes elevaciones (1530 m, 1639 m, y 1759 m) durante seis noches entre el 26 de Julio y el 2 de agosto del 2004, en el bosque detrs de la Estacin biolgica de Monteverde, Costa Rica. Se captur ciento setenta y un mariposas nocturnas, representando 76 morfoespecies, 64% de las cuales fueron nicas a la elevacin en que fueron colectadas. La elevacin ms baja tuvo la mayor diversidad de especies as como el mayor nmero de mariposas nocturnas (H=1.553, 69 mariposas nocturnas), seguida de la elevacin ms alta (H=1.528, 67 mariposas nocturnas). Tanto la diversidad ms baja como el nmero ms bajo de mariposas nocturnas individuales (H=1.318, 35 mariposas) fueron colectados en la elevacin mediana. La diversidad fue significativamente diferente entre las elevaciones ms baja y mediana (t=3.91, p=< 0.002) y entre las elevaciones mediana y ms alta (t=3.33, p= < 0.002). El mayor traslape de especies se encontr entre las elevaciones ms baja y la mediana (J= 0.60). El estudio no apoya la hiptesis de que habra menos diversidad y abundancia de mariposas nocturnas en tanto la elevacin aumentaba. Ms bien, el estudio parece indicar que hubo factores en la elevacin mediana que redujeron la abundancia y diversidad de mariposas nocturnas en relacin con las elevaciones ms alta y la ms baja. Se necesita estudios futuros para determinar si las tendencias de distribucin observadas son especficas para los lugares, poca del ao, o para las noches de colecta durante este estudio.
546
Text in English.
650
Moths
Species diversity
Altitudes--Measurement
Costa Rica--Puntarenas--Monteverde Zone
4
Polillas
Diversidad de especies
Altitud--Medida
Costa Rica--Puntarenas--Zona de Monteverde
653
Tropical Ecology Summer 2004
Ecologa Tropical Verano 2004
655
Reports
720
CIEE
773
t Monteverde Institute : Tropical Ecology
856
u http://digital.lib.usf.edu/?m39.399


printinsert_linkshareget_appmore_horiz

Download Options

close

Download PDF

Images

Choose Size
Choose file type



Cite this item close

APA

Cras ut cursus ante, a fringilla nunc. Mauris lorem nunc, cursus sit amet enim ac, vehicula vestibulum mi. Mauris viverra nisl vel enim faucibus porta. Praesent sit amet ornare diam, non finibus nulla.

MLA

Cras efficitur magna et sapien varius, luctus ullamcorper dolor convallis. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Fusce sit amet justo ut erat laoreet congue sed a ante.

CHICAGO

Phasellus ornare in augue eu imperdiet. Donec malesuada sapien ante, at vehicula orci tempor molestie. Proin vitae urna elit. Pellentesque vitae nisi et diam euismod malesuada aliquet non erat.

WIKIPEDIA

Nunc fringilla dolor ut dictum placerat. Proin ac neque rutrum, consectetur ligula id, laoreet ligula. Nulla lorem massa, consectetur vitae consequat in, lobortis at dolor. Nunc sed leo odio.