Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/46301 |
Resumo: | Interaction networks vary in time and space. This happens because they are influenced by biotic and abiotic mechanisms, which act directly on the probability of species interaction. However, like the vast majority of studies in ecology, interaction networks are also influenced by sampling, either by the influence of different sampling methods, or by the low sampling effort. That said, this dissertation is divided into two chapters. In the first chapter, we verified the influence of biotic mechanisms (abundance of floral visitors and number of flowers) and abiotics (temperature and precipitation) on metrics of floral plant-visitor interaction networks over a 12-month time series. In the second chapter, we are concerned with verifying the sampling effort required in each of the four seasons (spring, summer, autumn and winter) and whether that effort differed between seasons. For chapter one, we observed that the dry season (characterized by periods of lower temperature and precipitation) negatively affects the robustness of the networks; while, the abundance of floral visitors increases modularity and decreases the weighted connectance of networks. The number of flowers had no significant effect on the metrics. In the second chapter, using species accumulation curves and non-linear models, we observed that the seasons differ in relation to the sampling effort required to achieve stability in six properties of the network (animals richness, plants richness, interactions richness, Shannon's diversity, network specialization (H2) and weighted connectivity). We observed that the seasons of the year differed in each metric, and these differences are generally explained by the richness and abundance of the species. Finally, our results reiterate the importance of studying the interactions and the mechanisms behind them, since the interaction between species is what forms biodiversity and maintains the functioning of the ecosystem. |
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Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensuMecanismos de variação temporal de redes planta-visitante floral em uma área sazonal de cerrado stricto sensuRedes de interaçãoInteração inseto-plantaEsforço amostralEcossistemas - BiodiversidadeEcologia de comunidadesNetworks structureInsect-plant interactionSample effortEcosystems - BiodiversityCommunity ecologyEcologia AplicadaInteraction networks vary in time and space. This happens because they are influenced by biotic and abiotic mechanisms, which act directly on the probability of species interaction. However, like the vast majority of studies in ecology, interaction networks are also influenced by sampling, either by the influence of different sampling methods, or by the low sampling effort. That said, this dissertation is divided into two chapters. In the first chapter, we verified the influence of biotic mechanisms (abundance of floral visitors and number of flowers) and abiotics (temperature and precipitation) on metrics of floral plant-visitor interaction networks over a 12-month time series. In the second chapter, we are concerned with verifying the sampling effort required in each of the four seasons (spring, summer, autumn and winter) and whether that effort differed between seasons. For chapter one, we observed that the dry season (characterized by periods of lower temperature and precipitation) negatively affects the robustness of the networks; while, the abundance of floral visitors increases modularity and decreases the weighted connectance of networks. The number of flowers had no significant effect on the metrics. In the second chapter, using species accumulation curves and non-linear models, we observed that the seasons differ in relation to the sampling effort required to achieve stability in six properties of the network (animals richness, plants richness, interactions richness, Shannon's diversity, network specialization (H2) and weighted connectivity). We observed that the seasons of the year differed in each metric, and these differences are generally explained by the richness and abundance of the species. Finally, our results reiterate the importance of studying the interactions and the mechanisms behind them, since the interaction between species is what forms biodiversity and maintains the functioning of the ecosystem.Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Redes de interação variam no tempo e no espaço. Isso acontece devido ao fato de serem influenciadas por mecanismos bióticos e abióticos, que atuam diretamente sobre a probabilidade de interação das espécies. Contudo, assim como a grande maioria dos estudos em ecologia, a nossa percepção sobre as redes de interação é substancialmente influenciada pela amostragem, seja pela variedade de métodos de coleta, ou pela capacidade do esforço amostral em estimar com precisão a organização das interações. Posto isto, esta dissertação está dividida em dois capítulos. No primeiro capítulo, investigamos a influência de mecanismos bióticos (abundância de visitantes florais e número de flores) e abióticos (temperatura e precipitação) sobre métricas de redes de interação planta-visitante floral em ambientes de Cerrado, ao longo de uma série temporal de doze meses. No segundo capítulo, utilizando as mesmas redes, nos preocupamos em avaliar como o esforço amostral influencia as estimativas de métricas das redes em diferentes estações do ano (primavera, verão, outono e inverno). Para o capítulo um, observamos que as redes de interação foram potencialmente mais sensíveis à perda de espécies durante a estação seca (caracterizada por períodos de menor temperatura e precipitação), enquanto que a abundância de visitantes florais aumentou a modularidade e diminuiu a conectância ponderada das redes. O número de flores abertas e aptas a receberem visitantes não apresentou efeito significativo sobre as métricas, sugerindo a abundância de visitantes como efeito limitante das interações. No segundo capítulo, usando curvas de acumulação de espécies e modelos não lineares, observamos que as estações do ano diferem em relação ao esforço amostral necessário para atingir a estabilidade das redes em seis propriedades de redes: número de animais, número de plantas, número de interações, diversidade de Shannon, especialização da rede (H2) e conectância ponderada. Observamos que o mesmo esforço amostral produziu estimativas significativamente diferentes de cada métrica, sendo essas diferenças geralmente explicadas pela riqueza e abundância das espécies obtidas em cada estação. Por fim, nossos resultados reiteram a importância de se estudar padrões de interações e os mecanismos por trás delas, visto que as interações entre espécies são determinantes da biodiversidade e mantêm o funcionamento dos ecossistemas.Universidade Federal de LavrasPrograma de Pós-Graduação em Ecologia AplicadaUFLAbrasilDepartamento de BiologiaFaria, Lucas Del BiancoBaumgartner, Matheus TenórioPrado, Paulo Inácio de Knegt López deItabaiana, Yasmine AntoniniSilva, Victor Hugo Duarte da2021-05-18T16:25:03Z2021-05-18T16:25:03Z2021-05-182021-05-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfSILVA, V. H. D. da. Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu. 2021. 54 p. Dissertação (Mestrado em Ecologia Aplicada) – Universidade Federal de Lavras, Lavras, 2021.http://repositorio.ufla.br/jspui/handle/1/46301enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2023-04-28T13:52:37Zoai:localhost:1/46301Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-04-28T13:52:37Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu Mecanismos de variação temporal de redes planta-visitante floral em uma área sazonal de cerrado stricto sensu |
title |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu |
spellingShingle |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu Silva, Victor Hugo Duarte da Redes de interação Interação inseto-planta Esforço amostral Ecossistemas - Biodiversidade Ecologia de comunidades Networks structure Insect-plant interaction Sample effort Ecosystems - Biodiversity Community ecology Ecologia Aplicada |
title_short |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu |
title_full |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu |
title_fullStr |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu |
title_full_unstemmed |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu |
title_sort |
Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu |
author |
Silva, Victor Hugo Duarte da |
author_facet |
Silva, Victor Hugo Duarte da |
author_role |
author |
dc.contributor.none.fl_str_mv |
Faria, Lucas Del Bianco Baumgartner, Matheus Tenório Prado, Paulo Inácio de Knegt López de Itabaiana, Yasmine Antonini |
dc.contributor.author.fl_str_mv |
Silva, Victor Hugo Duarte da |
dc.subject.por.fl_str_mv |
Redes de interação Interação inseto-planta Esforço amostral Ecossistemas - Biodiversidade Ecologia de comunidades Networks structure Insect-plant interaction Sample effort Ecosystems - Biodiversity Community ecology Ecologia Aplicada |
topic |
Redes de interação Interação inseto-planta Esforço amostral Ecossistemas - Biodiversidade Ecologia de comunidades Networks structure Insect-plant interaction Sample effort Ecosystems - Biodiversity Community ecology Ecologia Aplicada |
description |
Interaction networks vary in time and space. This happens because they are influenced by biotic and abiotic mechanisms, which act directly on the probability of species interaction. However, like the vast majority of studies in ecology, interaction networks are also influenced by sampling, either by the influence of different sampling methods, or by the low sampling effort. That said, this dissertation is divided into two chapters. In the first chapter, we verified the influence of biotic mechanisms (abundance of floral visitors and number of flowers) and abiotics (temperature and precipitation) on metrics of floral plant-visitor interaction networks over a 12-month time series. In the second chapter, we are concerned with verifying the sampling effort required in each of the four seasons (spring, summer, autumn and winter) and whether that effort differed between seasons. For chapter one, we observed that the dry season (characterized by periods of lower temperature and precipitation) negatively affects the robustness of the networks; while, the abundance of floral visitors increases modularity and decreases the weighted connectance of networks. The number of flowers had no significant effect on the metrics. In the second chapter, using species accumulation curves and non-linear models, we observed that the seasons differ in relation to the sampling effort required to achieve stability in six properties of the network (animals richness, plants richness, interactions richness, Shannon's diversity, network specialization (H2) and weighted connectivity). We observed that the seasons of the year differed in each metric, and these differences are generally explained by the richness and abundance of the species. Finally, our results reiterate the importance of studying the interactions and the mechanisms behind them, since the interaction between species is what forms biodiversity and maintains the functioning of the ecosystem. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-05-18T16:25:03Z 2021-05-18T16:25:03Z 2021-05-18 2021-05-03 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SILVA, V. H. D. da. Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu. 2021. 54 p. Dissertação (Mestrado em Ecologia Aplicada) – Universidade Federal de Lavras, Lavras, 2021. http://repositorio.ufla.br/jspui/handle/1/46301 |
identifier_str_mv |
SILVA, V. H. D. da. Temporal variation mechanisms of plant-floralvisitors’ networks in a seasonal area of Cerrado stricto sensu. 2021. 54 p. Dissertação (Mestrado em Ecologia Aplicada) – Universidade Federal de Lavras, Lavras, 2021. |
url |
http://repositorio.ufla.br/jspui/handle/1/46301 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Ecologia Aplicada UFLA brasil Departamento de Biologia |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Ecologia Aplicada UFLA brasil Departamento de Biologia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1807835214002520064 |