Karine Santana Carvalho

Karine Santana Carvalho
Universidade Estadual do Sudoeste da Bahia | UESB · Department of Biological Sciences (DCB)

Professor

About

22
Publications
5,812
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461
Citations
Citations since 2016
10 Research Items
237 Citations
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Introduction
I am a biologist and I am Professor at the State University of Southwest Bahia, Brazil. My main line of research is related to the conservation of biodiversity in tropical ecosystems. I am particularly interested in the following topics: ecological interactions between ants and plants, ants as an engineer of ecosystems and ants as bioindicators of environmental changes. My greatest research experience has been in the Amazon rainforest, but at the moment, I have focused my studies on the Caatinga.
Skills and Expertise

Publications

Publications (22)
Article
Tropical studies traditionally describe insect diversity variation throughout the year. The temporally structured responses of insect assemblages to climate seasonality vary across ecosystems due to gradients of resource availability and limiting ecological factors. These idiosyncratic responses might be particularly true across the vast geographic...
Article
Despite the historical efforts to list and organize the taxonomic knowledge about the Brazilian ant fauna, the most diverse in the world, several gaps regarding species distribution data and sampling coverage persist. In an attempt to fill some of these gaps, we here apply a scientometric approach to provide an updated overview of the ants of Brazi...
Article
Despite the historical efforts to list and organize the taxonomic knowledge about the Brazilian ant fauna, the most diverse in the world, several gaps regarding species distribution data and sampling coverage persist. In an attempt to fill some of these gaps, we here apply a scientometric approach to provide an updated overview of the ants of Brazi...
Article
Full-text available
Several aspects of the Cecropia-Azteca mutualism can vary across space and time. The present study explored this variation by focusing on correlations between morphophysiological characteristics of Cecropia pachystachya plants and the sizes of the populations of their breeding ant colonies (Azteca ovaticeps and A. alfari) in secondary forest and pa...
Article
Scientometric investigation and scientific production analysis are essential for science progress. Although a vast number of studies on Brazilian ant diversity have been carried out, a critical analysis of the advances in its scientific production is still missing. We compiled a comprehensive database on ant diversity papers carried out in the Braz...
Article
Full-text available
Ants, an ecologically successful and numerically dominant group of animals, play key ecological roles as soil engineers, predators, nutrient recyclers, and regulators of plant growth and reproduction in most terrestrial ecosystems. Further, ants are widely used as bioindicators of the ecological impact of land use. We gathered information of ant sp...
Article
Earth mounds, locally known as murundus, are ~ 4000 year old natural formations resulting from termite excavation and occur as mound fields in the Caatinga, the largest dry forest region in South America. Termites are ecosystem engineers and the bioturbation caused by them can influence the colonization of other insect species, e.g., the giant ants...
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Full-text available
In order to understand the effects of human impacts on structure and functioning of tropical forests, we should consider studies on animal-plant interactions such as ant-plant mutualistic interactions.We investigated the mutualistic interactions between ants (Azteca genera) and Cecropia plants in habitats of secondary forest and pasture used as cat...
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Full-text available
Natural earth mounds in many ecosystems harbor higher biodiversity than surroundings because they provide greater habitat heterogeniety. However, in the semi-arid Caatinga ecosystem of NE Brazil, natural mounds have much less vegetation and leaf litter with lower biodiversity as compared to the surrounding lowlands. The following hypotheses were te...
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Full-text available
The interaction between droughts and land-use fires threaten the carbon stocks, climate regulatory functions, and biodiversity of Amazon forests, particularly in the southeast, where deforestation and land-use ignitions are high. Repeated, severe, or combined fires and droughts result in tropical forest degradation via nonlinear dynamics and may le...
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a b s t r a c t Ecologists often seek sampling protocols that are both effective and relatively simple, i.e. those that provide a balance between the advantages obtained through sampling completeness and the costs involved in species sorting. Here we explored ways of simplifying a protocol devised for assessing geo-graphic patterns of ant species r...
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Full-text available
This study aimed to analyze how the vegetation structure (physiognomy) and seasonal changes between seasons (wet and dry) influence richness, diversity and composition of ant species of arboreal and shrubby savanah (Caatinga) environments. The vegetation structure was significantly different among the three strata for all parameters (mean diameter...
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Full-text available
The Bromeliaceae family exhibits several adaptations that allow the occurrence of its members in different physiognomies, including the Caatinga. The arrangement of leaves in rosette forms a cistern or tank, in which nutrient-rich water accumulates. This provides a microhabitat for reproduction, feeding, and larval development of many invertebrates...
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Abstract: This study examined whether high nutrient concentrations associated with leaf-cutting ant nests influence plant growth and plant water relations in Amazon rain forests. Three nests of Atta cephalotes were selected along with 31 Amaioua guianensis and Protium sp. trees that were grouped into trees near and distant (>10 m) from nests. A 15N...
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Full-text available
In this study we investigated the role of leaf-cutting ants in the post-fire vegetation recovery. We hypothesized that a forest plot submitted to annual fire presents: (1) higher abundance of leaf-cutting ant nests; (2) higher removal of seeds; and (3) higher herbivory rates of leaf-cutting ants, when compared to the forest plots without fire (cont...
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Leaf-cutter ants (Atta spp.) remove leaf litter and woody debris—potential fuels—in and around their nests and foraging trails. We conducted single and three annual experimental fires to determine the effects of this leaf-cutter ant activity on the behavior of low-intensity, slow-moving fires. In a transitional forest, where the southern Amazon for...
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Full-text available
This study evaluates the richness and composition of the epigeic ant fauna in two Caatinga areas (site 1: Brejo Novo and 2: Frizuba) within a transitional region (between the Caatinga and the Decidual Atlantic Forest) in the Municipality of Jequié, state of Bahia, Brazil. Ants were sampled using pitfall traps and Winkler extractor method in 50 rand...
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Full-text available
Community of ants that nest in dead twigs on the ground of Central Amazonian forest, Brazil. A total area of 2,880 m2 in four forest sites, near Manaus, Brazil, was searched for ant colonies nesting in dead twigs on the ground. An amount of 3,706 twigs (0.5-5 cm in diameter) were gathered, of which only 623 (16.8%) had ants, which is equivalent to...
Article
We assessed responses of ants nesting in twigs in the litter layer to habitat changes associated with forest fragmentation in central Amazonia. Ants were collected along transects located at nine distances (5, 20, 40, 60, 100, 200, 300, 400, 500 m) from the edges of two isolated 100-ha fragments and two continuous-forest sites. In total, 2880 m2 of...

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Project (1)
Project
The main objective of this study is to describe the geographic patterns of ant diversity in the three main biomes (Atlantic Forest, Cerrado and Caatinga) of the state of Bahia, Brazil.