The role of urban savannah fragments and their characteristics for the conservation of ants (Hymenoptera: Formicidae) in central Brazil

Aranda, Rodrigo; Tibcherani, Mariáh; Nacagava, Vivian Ayumi Fujizawa; Carvalho, Suelen Sandim de; Souza, Paulo Robson de

doi:10.1007/s42974-022-00078-7

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…Nonetheless, this was a characteristic of the study, and since the interaction between EFN plants and ants is facultative, plants can be visited by several ant species (Anjos et al 2017). Moreover, the stability of ant-plant mutualism in the tropics depends on only a few arboreal species of ants (Lange et al 2013, Câmara et al 2018, which coincidentally are species that occur in parks (Aranda et al 2022). In this context, the authors might consider the effect of the ant community on plants rather than analysing each ant species separately (Franco & Cogni 2013, Raupp et al 2020.…”

Section: Discussionmentioning

confidence: 99%

Effect of ants on herbivory levels ofInga laurina: the interplay between space and time in an urban area

Domingos

Alves-Silva²

2023

J. Trop. Ecol.

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Extrafloral nectary plants not only occur in natural areas but also in urban parks. These areas are prone to edge effects, and plants face different microenvironmental conditions. We investigated the spatial variation of ant–plant interactions in an urban park, and we examined if plants with ants would show lower herbivory levels and if it depended on habitat type (interior or edges). Seedlings of Inga laurina were set in 200-m long transects (which covered both the west and east edges, and the interior) in an urban park and then experimentally assigned to be either ant-present or ant-excluded plants. Leaf herbivory was investigated throughout the wet season and was influenced by the interaction effect between ants and habitat type. Ants decreased the herbivory on the west edge, but on the east edge results were the opposite. The east edge had higher temperature and sunlight exposure in comparison to the other sites and was assumed to disrupt the stability of ant–plant interactions. In the interior of the fragment, herbivory depended on ant presence/absence and on the location of plants along the transect. Our study highlights how the outcomes of ant–plant interactions are spatially conditioned and affected by different types of habitats.

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Section: Discussionmentioning

confidence: 99%

Effect of ants on herbivory levels ofInga laurina: the interplay between space and time in an urban area

Domingos

Alves-Silva²

2023

J. Trop. Ecol.

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“…O Cerrado brasileiro é um ecossistema savânico tropical com alta diversidade de espécies endêmicas e serviços ecossistêmicos (SILVA-JUNIOR et al, 2021). Este é o segundo bioma brasileiro em área, considerado um hotspot da biodiversidade, mas ameaçado pelo desmatamento e ação antrópica e, por isso prioritário para conservação (ARANDA et al, 2022). Cerca de 46% da mata nativa do cerrado foi convertida em cultivos agrícolas e pastagem (HOFMANN et al, 2021) e, apenas, 2,2% desse bioma está em áreas protegidas, aumentando o risco de extinção de espécies endêmicas (FERRO et al 2010).…”

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Saturniidae (Lepidoptera: Bombycoidea) do Cerrado central do Maranhão

Santos¹

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O Cerrado, o segundo maior bioma brasileiro com rica diversidade de espécies endêmicas, tem cerca de 46% de sua mata nativa convertida em cultivos agrícolas e pastagem e, por isso, considerado área prioritária para conservação. O levantamento da fauna é importante para se conhecer e monitorar a biodiversidade. Um total de 3454 espécies de Saturniidae foi registrado no mundo com cerca de 500 espécies no Brasil, sendo 202 espécies no Cerrado brasileiro. O objetivo desse estudo foi estudar a flutuação populacional e atualizar a distribuição geográfica e a ocorrência de novos registros de espécies de Saturniidae e de suas plantas hospedeiras no bioma cerrado do estado do Maranhão e região Nordeste do Brasil. Espécimes de Saturniidae foram coletados no Parque Estadual do Mirador, Maranhão, Brasil em noites de lua nova ou minguante com armadilha luminosa, entre 18:00 e 06:00 horas de outubro de 2006 a março de 2012, em meses alternados, dependendo do período lunar favorável. Um total de 49 espécies de 30 gêneros foi coletado, sendo 19 novos registros de espécies para o Maranhão e nove novos registros de espécies para a região Nordestes, aumentando estes números para 88 e 128, respectivamente. Espécies de 49 famílias de plantas foram obtidas de literatura como hospedeiras das espécies de Saturniidae coletadas, aumentando a necessidade de preservação ambiental para se manter a diversidade de espécies desses insetos no cerrado brasileiro. O número de espécimes coletados foi maior em fevereiro, março, outubro e novembro, no período chuvoso, indicando que a ocorrência das espécies de Saturniidae varia com os fatores climáticos e essas informações aumentam o conhecimento da flutuação populacional desses insetos no Cerrado do Brasil. Palavras-chave: Biodiversidade. Conservação. Mariposas.

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Urban patches of dry forest as refuges for ants and carabid beetles in a neotropical overcrowded city

Forero-Chavez,

Arenas-Clavijo,

Armbrecht

et al. 2024

Urban Ecosyst

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Cali is the third most prominent, and one of the most crowed, Colombian cities. It still harbours some tropical dry forest patches that can mitigate the impacts of the urban transformation; however, there is an almost total absence of information on the biological importance of these sites and their potential for future ecological restoration processes. To assess if they serve as important refuges for insect bioindicator species, we sampled five urban patches of tropical dry forest in the city, plus one nearby rural patch, using specific trapping procedures for ants and carabid beetles. Patch areas were variable, from 1 to 50 ha. We found that the smallest patch presented the highest ant richness, with a tendency towards generalists and a few unique species. Meanwhile, some specialist species were found in the rural patch. A total of 109 ant and 13 carabid species were recorded, including four new records of ants for Colombia. Results suggest that environmental variables favour the presence of generalist and opportunistic ants. Despite this, the high ant richness demonstrates that. Urban forest patches are important refuges for biodiversity. The low richness observed for carabids could be a sign of the challenges that urban forests face considering the ecological importance of beetles. The possible dangers of intensive internal use of these forests is discussed to prevent local extinctions, since the biggest forests are not necessarily conserving a higher richness. This work represents an important contribution to urban ecology in the region, with possibilities of further restoration in urban environments.

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The role of urban savannah fragments and their characteristics for the conservation of ants (Hymenoptera: Formicidae) in central Brazil

Cited by 3 publications

References 39 publications

Effect of ants on herbivory levels ofInga laurina: the interplay between space and time in an urban area

Effect of ants on herbivory levels ofInga laurina: the interplay between space and time in an urban area

Saturniidae (Lepidoptera: Bombycoidea) do Cerrado central do Maranhão

Urban patches of dry forest as refuges for ants and carabid beetles in a neotropical overcrowded city

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