Oil palm expansion threatens tropical moth assemblages in southwestern Costa Rica :
Oil palm is currently one of the most rapidly expanding crops throughout the tropics, yet little is known about its impacts on Neotropical biodiversity, especially for insect faunas. Responses of moth assemblages to land use change may substantially vary among taxa, depending on their functional traits and resource needs. In this study, geometrid and arctiine assemblages were surveyed in a tropical human dominated landscape of southwestern Costa Rica, where oil palm plantations have become the second commonest land cover after pastures. Moths were sampled during six months (Feb-Jul) with automatic funnel traps in four habitat types (interior and margin of old-growth forests, young secondary forests and oil palm plantations) inside a 30km2 area. Geometrid and arctiine richness and diversity was high in the interior of old-growth forests as well as at forest margins and young secondary forests, but was severely reduced in oil palm plantations. Abundance patterns of both groups showed seasonality, with a decrease in abundance towards the wet season. Geometrid numbers were highest in the interior of old-growth forests and lowest in oil palm plantations, while arctiine numbers did not differ between habitats due to the presence of a few extremely common lichen moth species in oil palm plantations. Dominance values were highest in oil palm plantations, where one species of each group accounted for over 40% of total abundance. Species composition was distinct in the forest interior and oil palm plantation sites when compared to the other intermediately disturbed habitats. Vegetation structure was the strongest predictor for moth community composition, whereas microclimatic differences were hardly relevant. The results of this study confirm that tropical forest geometrid moths are more vulnerable to land use change and are more strongly bound to the interior of rain forests, showing higher potential as bioindicator species, while many arctiines are more adapted to thrive in disturbed habitats. Conservation strategies should focus not only on the protection of old-growth forest remnants, but also on the promotion of natural forest re-growth and structural complexity of degraded habitats. Although successional forests harbor different species composition than old-growth forests, they may ameliorate biodiversity loss in the face of continuous oil palm expansion, which may have severe repercussions on the structure of ecological food webs and provisioning of ecosystem services in human dominated landscapes.
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Turrialba (Costa Rica) : CATIE
, 20
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| Subjects: | ELAEIS GUINEENSIS, GEOMETRIDAE, LEPIDOPTERA, USO MULTIPLE DE LA TIERRA, PLANTACIONES, BOSQUE TROPICAL, ESTACIONALIDAD, HABITAT, ORGANISMOS INDICADORES, BIODIVERSIDAD, IMPACTO AMBIENTAL, ARCTIINAE, |
| Online Access: | http://repositorio.bibliotecaorton.catie.ac.cr/bitstream/11554/7096/1/Oil_palm_expansion_threatens.pdf |
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ELAEIS GUINEENSIS GEOMETRIDAE LEPIDOPTERA USO MULTIPLE DE LA TIERRA PLANTACIONES BOSQUE TROPICAL ESTACIONALIDAD HABITAT ORGANISMOS INDICADORES BIODIVERSIDAD IMPACTO AMBIENTAL ARCTIINAE ELAEIS GUINEENSIS GEOMETRIDAE LEPIDOPTERA USO MULTIPLE DE LA TIERRA PLANTACIONES BOSQUE TROPICAL ESTACIONALIDAD HABITAT ORGANISMOS INDICADORES BIODIVERSIDAD IMPACTO AMBIENTAL ARCTIINAE |
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ELAEIS GUINEENSIS GEOMETRIDAE LEPIDOPTERA USO MULTIPLE DE LA TIERRA PLANTACIONES BOSQUE TROPICAL ESTACIONALIDAD HABITAT ORGANISMOS INDICADORES BIODIVERSIDAD IMPACTO AMBIENTAL ARCTIINAE ELAEIS GUINEENSIS GEOMETRIDAE LEPIDOPTERA USO MULTIPLE DE LA TIERRA PLANTACIONES BOSQUE TROPICAL ESTACIONALIDAD HABITAT ORGANISMOS INDICADORES BIODIVERSIDAD IMPACTO AMBIENTAL ARCTIINAE 41742 Alonso Rodríguez, Aura M. 67464 Fiedler, Konrad (autor/a) CATIE, Turrialba, Costa Rica 67698 Finegan, Bryan (autor/a) CATIE, Turrialba, Costa Rica Oil palm expansion threatens tropical moth assemblages in southwestern Costa Rica : |
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Oil palm is currently one of the most rapidly expanding crops throughout the tropics, yet little is known about its impacts on Neotropical biodiversity, especially for insect faunas. Responses of moth assemblages to land use change may substantially vary among taxa, depending on their functional traits and resource needs. In this study, geometrid and arctiine assemblages were surveyed in a tropical human dominated landscape of southwestern Costa Rica, where oil palm plantations have become the second commonest land cover after pastures. Moths were sampled during six months (Feb-Jul) with automatic funnel traps in four habitat types (interior and margin of old-growth forests, young secondary forests and oil palm plantations) inside a 30km2 area. Geometrid and arctiine richness and diversity was high in the interior of old-growth forests as well as at forest margins and young secondary forests, but was severely reduced in oil palm plantations. Abundance patterns of both groups showed seasonality, with a decrease in abundance towards the wet season. Geometrid numbers were highest in the interior of old-growth forests and lowest in oil palm plantations, while arctiine numbers did not differ between habitats due to the presence of a few extremely common lichen moth species in oil palm plantations. Dominance values were highest in oil palm plantations, where one species of each group accounted for over 40% of total abundance. Species composition was distinct in the forest interior and oil palm plantation sites when compared to the other intermediately disturbed habitats. Vegetation structure was the strongest predictor for moth community composition, whereas microclimatic differences were hardly relevant. The results of this study confirm that tropical forest geometrid moths are more vulnerable to land use change and are more strongly bound to the interior of rain forests, showing higher potential as bioindicator species, while many arctiines are more adapted to thrive in disturbed habitats. Conservation strategies should focus not only on the protection of old-growth forest remnants, but also on the promotion of natural forest re-growth and structural complexity of degraded habitats. Although successional forests harbor different species composition than old-growth forests, they may ameliorate biodiversity loss in the face of continuous oil palm expansion, which may have severe repercussions on the structure of ecological food webs and provisioning of ecosystem services in human dominated landscapes. |
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ELAEIS GUINEENSIS GEOMETRIDAE LEPIDOPTERA USO MULTIPLE DE LA TIERRA PLANTACIONES BOSQUE TROPICAL ESTACIONALIDAD HABITAT ORGANISMOS INDICADORES BIODIVERSIDAD IMPACTO AMBIENTAL ARCTIINAE |
| author |
41742 Alonso Rodríguez, Aura M. 67464 Fiedler, Konrad (autor/a) CATIE, Turrialba, Costa Rica 67698 Finegan, Bryan (autor/a) CATIE, Turrialba, Costa Rica |
| author_facet |
41742 Alonso Rodríguez, Aura M. 67464 Fiedler, Konrad (autor/a) CATIE, Turrialba, Costa Rica 67698 Finegan, Bryan (autor/a) CATIE, Turrialba, Costa Rica |
| author_sort |
41742 Alonso Rodríguez, Aura M. |
| title |
Oil palm expansion threatens tropical moth assemblages in southwestern Costa Rica : |
| title_short |
Oil palm expansion threatens tropical moth assemblages in southwestern Costa Rica : |
| title_full |
Oil palm expansion threatens tropical moth assemblages in southwestern Costa Rica : |
| title_fullStr |
Oil palm expansion threatens tropical moth assemblages in southwestern Costa Rica : |
| title_full_unstemmed |
Oil palm expansion threatens tropical moth assemblages in southwestern Costa Rica : |
| title_sort |
oil palm expansion threatens tropical moth assemblages in southwestern costa rica : |
| publisher |
Turrialba (Costa Rica) : CATIE |
| publishDate |
, 20 |
| url |
http://repositorio.bibliotecaorton.catie.ac.cr/bitstream/11554/7096/1/Oil_palm_expansion_threatens.pdf |
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AT 41742alonsorodriguezauram oilpalmexpansionthreatenstropicalmothassemblagesinsouthwesterncostarica AT 67464fiedlerkonradautoracatieturrialbacostarica oilpalmexpansionthreatenstropicalmothassemblagesinsouthwesterncostarica AT 67698fineganbryanautoracatieturrialbacostarica oilpalmexpansionthreatenstropicalmothassemblagesinsouthwesterncostarica |
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KOHA-OAI-BVE:1365342020-02-07T06:52:35ZOil palm expansion threatens tropical moth assemblages in southwestern Costa Rica : 41742 Alonso Rodríguez, Aura M. 67464 Fiedler, Konrad (autor/a) CATIE, Turrialba, Costa Rica 67698 Finegan, Bryan (autor/a) CATIE, Turrialba, Costa Rica textTurrialba (Costa Rica) : CATIE, 2014pdfOil palm is currently one of the most rapidly expanding crops throughout the tropics, yet little is known about its impacts on Neotropical biodiversity, especially for insect faunas. Responses of moth assemblages to land use change may substantially vary among taxa, depending on their functional traits and resource needs. In this study, geometrid and arctiine assemblages were surveyed in a tropical human dominated landscape of southwestern Costa Rica, where oil palm plantations have become the second commonest land cover after pastures. Moths were sampled during six months (Feb-Jul) with automatic funnel traps in four habitat types (interior and margin of old-growth forests, young secondary forests and oil palm plantations) inside a 30km2 area. Geometrid and arctiine richness and diversity was high in the interior of old-growth forests as well as at forest margins and young secondary forests, but was severely reduced in oil palm plantations. Abundance patterns of both groups showed seasonality, with a decrease in abundance towards the wet season. Geometrid numbers were highest in the interior of old-growth forests and lowest in oil palm plantations, while arctiine numbers did not differ between habitats due to the presence of a few extremely common lichen moth species in oil palm plantations. Dominance values were highest in oil palm plantations, where one species of each group accounted for over 40% of total abundance. Species composition was distinct in the forest interior and oil palm plantation sites when compared to the other intermediately disturbed habitats. Vegetation structure was the strongest predictor for moth community composition, whereas microclimatic differences were hardly relevant. The results of this study confirm that tropical forest geometrid moths are more vulnerable to land use change and are more strongly bound to the interior of rain forests, showing higher potential as bioindicator species, while many arctiines are more adapted to thrive in disturbed habitats. Conservation strategies should focus not only on the protection of old-growth forest remnants, but also on the promotion of natural forest re-growth and structural complexity of degraded habitats. Although successional forests harbor different species composition than old-growth forests, they may ameliorate biodiversity loss in the face of continuous oil palm expansion, which may have severe repercussions on the structure of ecological food webs and provisioning of ecosystem services in human dominated landscapes.La palma aceitera es actualmente uno de los cultivos de más rápida expansión en el trópico, pero poco se conoce sobre su impacto en la biodiversidad de la región Neotropical, en especial para los insectos. Las respuestas de mariposas nocturnas al cambio de uso de suelo puede variar sustancialmente entre taxones, dependiendo de sus rasgos funcionales y necesidad de recursos. En este estudio, se evaluó el ensamblaje de Geometridae y Erebidae-Arctiinae en un agropaisaje tropical del suroeste de Costa Rica, donde las plantaciones de palma aceitera se han convertido en el segundo uso de suelo más común luego de las pasturas. Las mariposas nocturnas fueron colectadas con trampas de embudo automáticas durante seis meses (feb-jul) en cuatro tipos de hábitat (interior y margen de bosque maduro, bosque secundario joven y plantaciones de palma aceitera) dentro de un área de 30km2. La riqueza y diversidad de geométridos y ártidos fue mayor en el interior del bosque, como también en el margen del bosque y bosque secundario joven, y fue marcadamente reducida en las plantaciones de palma. Los patrones de abundancia para ambos grupos de mariposas mostraron diferencias en la estacionalidad, con una reducción en abundancia hacia la época lluviosa. La captura de geométridos fue mayor en el interior del bosque maduro y menor en las plantaciones de palma, mientras que los árctidos no mostraron diferencias entre hábitats debido a la presencia de algunas mariposas de la tribu Lithosiini, las cuales fueron muy comunes en las plantaciones de palma. Los valores de dominancia fueron mayores en las plantaciones, donde una especie de cada grupo representó más del 40% de la abundancia total. La composición de especies fue diferente en el interior del bosque y en las plantaciones de palma, en comparación con los otros hábitats perturbados y sucesionales. La estructura de la vegetación resultó ser el factor más influyente en la composición de especies de mariposas en este paisaje, mientras que el microclima fue poco relevante. Los resultados de este estudio confirman que los geométridos son más vulnerables al cambio de uso de suelo y están más confinados a bosques maduros, por lo que muestran mayor potencial como indicadores biológicos, mientras que muchos ártidos están más adaptados a prosperar en hábitats perturbados. Se recomienda que las estrategias de conservación no se enfoquen únicamente en la protección de bosques maduros, sino también en la promoción de sucesión secundaria y aumento de la complejidad estructural de hábitats perturbados. Aunque los bosques sucesionales albergan una composición de especies diferente a bosques maduros, este hábitat podría reducir la pérdida de biodiversidad ante la acelerada expansión de palma aceitera, la cual puede tener consecuencias graves en la estructura de las cadenas alimenticias y provisión de servicios ecosistémicos en agropaisajes tropicales.Tesis (Mag. Sc. in Management and Conservation of Tropical Forests and Biodiversity) -- CATIE. Escuela de Posgrado. Turrialba (Costa Rica), 2014Bibliografía páginas 54-60Oil palm is currently one of the most rapidly expanding crops throughout the tropics, yet little is known about its impacts on Neotropical biodiversity, especially for insect faunas. Responses of moth assemblages to land use change may substantially vary among taxa, depending on their functional traits and resource needs. In this study, geometrid and arctiine assemblages were surveyed in a tropical human dominated landscape of southwestern Costa Rica, where oil palm plantations have become the second commonest land cover after pastures. Moths were sampled during six months (Feb-Jul) with automatic funnel traps in four habitat types (interior and margin of old-growth forests, young secondary forests and oil palm plantations) inside a 30km2 area. Geometrid and arctiine richness and diversity was high in the interior of old-growth forests as well as at forest margins and young secondary forests, but was severely reduced in oil palm plantations. Abundance patterns of both groups showed seasonality, with a decrease in abundance towards the wet season. Geometrid numbers were highest in the interior of old-growth forests and lowest in oil palm plantations, while arctiine numbers did not differ between habitats due to the presence of a few extremely common lichen moth species in oil palm plantations. Dominance values were highest in oil palm plantations, where one species of each group accounted for over 40% of total abundance. Species composition was distinct in the forest interior and oil palm plantation sites when compared to the other intermediately disturbed habitats. Vegetation structure was the strongest predictor for moth community composition, whereas microclimatic differences were hardly relevant. The results of this study confirm that tropical forest geometrid moths are more vulnerable to land use change and are more strongly bound to the interior of rain forests, showing higher potential as bioindicator species, while many arctiines are more adapted to thrive in disturbed habitats. Conservation strategies should focus not only on the protection of old-growth forest remnants, but also on the promotion of natural forest re-growth and structural complexity of degraded habitats. Although successional forests harbor different species composition than old-growth forests, they may ameliorate biodiversity loss in the face of continuous oil palm expansion, which may have severe repercussions on the structure of ecological food webs and provisioning of ecosystem services in human dominated landscapes.La palma aceitera es actualmente uno de los cultivos de más rápida expansión en el trópico, pero poco se conoce sobre su impacto en la biodiversidad de la región Neotropical, en especial para los insectos. Las respuestas de mariposas nocturnas al cambio de uso de suelo puede variar sustancialmente entre taxones, dependiendo de sus rasgos funcionales y necesidad de recursos. En este estudio, se evaluó el ensamblaje de Geometridae y Erebidae-Arctiinae en un agropaisaje tropical del suroeste de Costa Rica, donde las plantaciones de palma aceitera se han convertido en el segundo uso de suelo más común luego de las pasturas. Las mariposas nocturnas fueron colectadas con trampas de embudo automáticas durante seis meses (feb-jul) en cuatro tipos de hábitat (interior y margen de bosque maduro, bosque secundario joven y plantaciones de palma aceitera) dentro de un área de 30km2. La riqueza y diversidad de geométridos y ártidos fue mayor en el interior del bosque, como también en el margen del bosque y bosque secundario joven, y fue marcadamente reducida en las plantaciones de palma. Los patrones de abundancia para ambos grupos de mariposas mostraron diferencias en la estacionalidad, con una reducción en abundancia hacia la época lluviosa. La captura de geométridos fue mayor en el interior del bosque maduro y menor en las plantaciones de palma, mientras que los árctidos no mostraron diferencias entre hábitats debido a la presencia de algunas mariposas de la tribu Lithosiini, las cuales fueron muy comunes en las plantaciones de palma. Los valores de dominancia fueron mayores en las plantaciones, donde una especie de cada grupo representó más del 40% de la abundancia total. La composición de especies fue diferente en el interior del bosque y en las plantaciones de palma, en comparación con los otros hábitats perturbados y sucesionales. La estructura de la vegetación resultó ser el factor más influyente en la composición de especies de mariposas en este paisaje, mientras que el microclima fue poco relevante. Los resultados de este estudio confirman que los geométridos son más vulnerables al cambio de uso de suelo y están más confinados a bosques maduros, por lo que muestran mayor potencial como indicadores biológicos, mientras que muchos ártidos están más adaptados a prosperar en hábitats perturbados. Se recomienda que las estrategias de conservación no se enfoquen únicamente en la protección de bosques maduros, sino también en la promoción de sucesión secundaria y aumento de la complejidad estructural de hábitats perturbados. Aunque los bosques sucesionales albergan una composición de especies diferente a bosques maduros, este hábitat podría reducir la pérdida de biodiversidad ante la acelerada expansión de palma aceitera, la cual puede tener consecuencias graves en la estructura de las cadenas alimenticias y provisión de servicios ecosistémicos en agropaisajes tropicales.ELAEIS GUINEENSISGEOMETRIDAELEPIDOPTERAUSO MULTIPLE DE LA TIERRAPLANTACIONESBOSQUE TROPICALESTACIONALIDADHABITATORGANISMOS INDICADORESBIODIVERSIDADIMPACTO AMBIENTALARCTIINAELand use effects on geometrid and arctiine moth assemblages in the tropical lowlands of southwestern Costa Ricahttp://repositorio.bibliotecaorton.catie.ac.cr/bitstream/11554/7096/1/Oil_palm_expansion_threatens.pdf |