Gustavo Quevedo Romero

• Abstract

  Species affect on each other in complex ways, and ecological networks - such as food webs - describe how interactions connect species. Although ecological network theory has allowed predictions of how perturbations ricochet between species, it remains limited in several key respects. First, ecological networks are often only considered at small spatial scales, even though metacommunity th…

  Unifying environmental and spatial determinants of food web structure across spatial scales, AP.BTA.R

• Abstract

  The transport and flow of resources from donor ecosystems can subsidize an enormous biomass of consumers in recipient ecosystems. These allochthonous resources (i.e., resources derived from different ecosystems) may be characterized by nutrients and living organisms. The latter, typically represented by emergent aquatic insects, actively reach adjacent ecosystems and are consumed by terre…

  Influence of latitude and aquatic subsidies on niche breadth and structure of terrestrial communities, AP.R

• Abstract

  Global biodiversity is eroding because of stressors such as climate change and habitat alteration. Effects of such global change on the structure and functioning of entire food webs is poorly known. The aim of this project is to investigate how changes in rainfall patterns and atmospheric warming, predicted for the next decades, can affect tropical ecosystem functioning in a biogeographic…

  Global changes and the functioning of ecosystems in phytotelmata, AP.PFPMCG.R

(Only some records are available in English at this moment)

• Abstract

  Tropical forests, although they cover a very small portion of the planet, they harbor 50% to 80% of the total biodiversity of terrestrial ecosystems. Commonly, their luxuriant vegetation contrasts with acidic and dystrophic soils, where different cycling mechanisms ensure the maintenance of such vegetation. In these forests, above-ground stocks of nutrients are mostly found in the canopy,…

  Epiphytic Tank Bromeliads in tropical forests: unveiling their role for seedling and soil bacterial communities through stable isotopes and metagenomic, BP.DR
• Anthropogenic effects on the diversity and functioning of freshwater ecosystems, BP.TT

• Abstract

  Global warming and changes in species composition are one of the main problems ecosystems currently face. With this project we will investigate how 4°C increase in temperature combined with changes in litter composition affects body size of aquatic insect community living on tank bromeliads. Specifically, we seek to understand which litter aspect is more important and how does it interact…

  Effects of temperature increase and changes in leaf litter composition on aquatic insects body size, BP.IC

(Only some records are available in English at this moment)

• Abstract

  Global biodiversity is declining at unprecedented rate mostly due to the stressors such as climate change and habitat alteration. Effects of such global changes on the structure, stability and functioning of natural complex networks (food webs) is poorly understood, especially in the tropics. A broad and audacious project, partially funded by FAPESP (# 2012/51143-3) under my coordination …

  Effects of climate change on the structure of food webs in latitudinal gradients, BE.PQ

• Abstract

  The number of studies on the effects of climate change on biodiversity have increased over the past 10 years. However, only a few have attempted to empirically investigate the effects of global warming on the ecosystem and trophic structure of aquatic systems, especially in neotropical systems. In this study, we will investigate the effects of global warming combine with the effects of pr…

  The effects of global warming on the trophic structure and ecosystem functioning in tank-bromeliads, BE.EP.DR