Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and Understory

Vertical stratification is a recognized pattern in tropical forests; however, biotic and abiotic factors driving this pattern are little explored. We investigated the influence of daily climatic variation in the vertical stratification of fruit-feeding butterfly assemblages sampled with bait traps i...

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Main Authors: Aline Richter, Milton de Souza Mendonça, Karine Gawlinski, Cristiano Agra Iserhard
Format: Article
Language:English
Published: MDPI AG 2023-04-01
Series:Diversity
Subjects:
Online Access:https://www.mdpi.com/1424-2818/15/4/560
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author Aline Richter
Milton de Souza Mendonça
Karine Gawlinski
Cristiano Agra Iserhard
author_facet Aline Richter
Milton de Souza Mendonça
Karine Gawlinski
Cristiano Agra Iserhard
author_sort Aline Richter
collection DOAJ
description Vertical stratification is a recognized pattern in tropical forests; however, biotic and abiotic factors driving this pattern are little explored. We investigated the influence of daily climatic variation in the vertical stratification of fruit-feeding butterfly assemblages sampled with bait traps in the understory and canopy of a subtropical Atlantic Forest. Overall, 1347 individuals belonging to 38 species of fruit-feeding butterflies were recorded. The canopy and understory are distinct concerning diurnal but not nocturnal microclimatic conditions, leading to different responses in community structure. Richness did not differ between strata, but we observed an effect of stratum in interaction with variation in microclimatic conditions, with the canopy increasing in abundance compared to the understory. Temperature homogenization at night can hinder vertical stratification in richness, while microclimatic variation influences species abundance. The species composition was affected by strata with high turnover in the understory, without an effect of microclimatic variables in beta diversity. In addition to the difference in composition, our study shows that the understory was represented mainly by species from Satyrinae, while the canopy presented species from different clades. This could be an artefact of habitat structure, and the species adapted to the closed forest have a dispersal limitation compared to in the canopy. These findings help us to better understand the mechanisms generating distinct patterns of vertical stratification of fruit-feeding butterflies in the Neotropics and provide new insights into the role of microclimatic conditions in the structure of insect assemblages.
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spelling doaj.art-5d0ead6f502f4b31a79189168f0a506d2023-11-17T18:57:21ZengMDPI AGDiversity1424-28182023-04-0115456010.3390/d15040560Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and UnderstoryAline Richter0Milton de Souza Mendonça1Karine Gawlinski2Cristiano Agra Iserhard3Programa de Pós-Graduação em Biodiversidade Animal, Departamento de Ecologia, Zoologia e Genética, Universidade Federal de Pelotas, Pelotas 96.160-000, Rio Grande do Sul, BrazilPrograma de Pós-Graduação em Ecologia, Departamento de Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre 91.509-900, Rio Grande do Sul, BrazilPrograma de Pós-Graduação em Ecologia, Departamento de Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre 91.509-900, Rio Grande do Sul, BrazilPrograma de Pós-Graduação em Biodiversidade Animal, Departamento de Ecologia, Zoologia e Genética, Universidade Federal de Pelotas, Pelotas 96.160-000, Rio Grande do Sul, BrazilVertical stratification is a recognized pattern in tropical forests; however, biotic and abiotic factors driving this pattern are little explored. We investigated the influence of daily climatic variation in the vertical stratification of fruit-feeding butterfly assemblages sampled with bait traps in the understory and canopy of a subtropical Atlantic Forest. Overall, 1347 individuals belonging to 38 species of fruit-feeding butterflies were recorded. The canopy and understory are distinct concerning diurnal but not nocturnal microclimatic conditions, leading to different responses in community structure. Richness did not differ between strata, but we observed an effect of stratum in interaction with variation in microclimatic conditions, with the canopy increasing in abundance compared to the understory. Temperature homogenization at night can hinder vertical stratification in richness, while microclimatic variation influences species abundance. The species composition was affected by strata with high turnover in the understory, without an effect of microclimatic variables in beta diversity. In addition to the difference in composition, our study shows that the understory was represented mainly by species from Satyrinae, while the canopy presented species from different clades. This could be an artefact of habitat structure, and the species adapted to the closed forest have a dispersal limitation compared to in the canopy. These findings help us to better understand the mechanisms generating distinct patterns of vertical stratification of fruit-feeding butterflies in the Neotropics and provide new insights into the role of microclimatic conditions in the structure of insect assemblages.https://www.mdpi.com/1424-2818/15/4/560araucaria forestbeta diversitycommunity ecologyhumidityNymphalidaetemperature
spellingShingle Aline Richter
Milton de Souza Mendonça
Karine Gawlinski
Cristiano Agra Iserhard
Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and Understory
Diversity
araucaria forest
beta diversity
community ecology
humidity
Nymphalidae
temperature
title Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and Understory
title_full Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and Understory
title_fullStr Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and Understory
title_full_unstemmed Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and Understory
title_short Microclimatic Fluctuation throughout the Day Influences Subtropical Fruit-Feeding Butterfly Assemblages between the Canopy and Understory
title_sort microclimatic fluctuation throughout the day influences subtropical fruit feeding butterfly assemblages between the canopy and understory
topic araucaria forest
beta diversity
community ecology
humidity
Nymphalidae
temperature
url https://www.mdpi.com/1424-2818/15/4/560
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