R. Wirth

Publications76
h-index26
Citations2,440
Highly Influential Citations150
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Herbivory of Leaf-Cutting Ants: A Case Study on Atta colombica in the Tropical Rainforest of Panama
1 About This Book.- 2 The Natural History of Leaf-Cutting Ants.- 3 The Study Area - Barro Colorado Island.- 4 Species Composition of the Forest.- 5 Forest Light Regimes.- 6 Canopy Structure of the… Expand
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Candicidin-producing Streptomyces support leaf-cutting ants to protect their fungus garden against the pathogenic fungus Escovopsis
Leaf-cutting ants such as Acromyrmex octospinosus live in obligate symbiosis with fungi of the genus Leucoagaricus, which they grow with harvested leaf material. The symbiotic fungi, in turn, serve… Expand
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Spatial and Temporal Variability of Canopy Structure in a Tropical Moist Forest
Abstract Tree fall gaps are widely considered to play a prominent role in the maintenance of species diversity, while the spatiotemporal variability of canopy structure within closed forest stands is… Expand
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Chemical basis of the synergism and antagonism in microbial communities in the nests of leaf-cutting ants
Leaf-cutting ants cultivate the fungus Leucoagaricus gongylophorus, which serves as a major food source. This symbiosis is threatened by microbial pathogens that can severely infect L. gongylophorus.… Expand
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Seed dispersal by ants in the semi-arid Caatinga of North-East Brazil.
BACKGROUND AND AIMS Myrmecochory is a conspicuous feature of several sclerophyll ecosystems around the world but it has received little attention in the semi-arid areas of South America. This study… Expand
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Plant Herbivore Interactions at the Forest Edge
An ever-increasing proportion of the global forested landscape is in close proximity to edges and edge effects have been shown to represent key forces affecting both organisms and ecological… Expand
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Spatio-temporal permanence and plasticity of foraging trails in young and mature leaf-cutting ant colonies ( Atta spp.)
The distribution and formation of foraging trails have largely been neglected as factors explaining harvesting patterns of leaf-cutting ants. We applied fractal analysis, circular, and conventional… Expand
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The Multiple Impacts of Leaf‐Cutting Ants and Their Novel Ecological Role in Human‐Modified Neotropical Forests
Herbivory has been identified as a potent evolutionary force, but its ecological impacts have been frequently underestimated. Leaf-cutting ants represent one of the most important herbivores of the… Expand
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Parasites dominate hyperdiverse soil protist communities in Neotropical rainforests
High animal and plant richness in tropical rainforest communities has long intrigued naturalists. It is unknown if similar hyperdiversity patterns are reflected at the microbial scale with… Expand
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Increasing densities of leaf-cutting ants ( Atta spp.) with proximity to the edge in a Brazilian Atlantic forest
Leaf-cutting ants (genera Atta and Acromyrmex) have been denoted key species of American rain-forest ecosystems (Fowler et al . 1989) because of their multifarious effects on the vegetation. Being… Expand
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