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Top-down and bottom-up regulation of planktonic communities in a warm temperate wetland
(Oxford University Press, 2010-02)
This field experimental study simultaneously analysed the effects of predation (top-down) and nutrients (bottom-up) on planktonic communities (phytoplankton, zooplankton, heterotrophic nanoflagellates and ciliates) in a ...
Bottom-up effects may not reach the top: the influence of ant-aphid interactions on the spread of soil disturbances through trophic chains
(The Royal Society, 2012-06-20)
Soil disturbances that increase nutrient availability may trigger bottom-up cascading effects along trophic chains. However, the strength and sign of these effects may depend on attributes of the interacting species. Here, ...
Where are the males? The influence of bottom-up and top-down factors and sociability on the spatial distribution of a territorial ungulate
(Springer, 2022-01)
The factors that regulate the abundance and distribution of wild herbivores are key components of a species’ ecology and include bottom-up and top-down mechanisms, as well as aspects related to social organization. In ...
Bottom-up and top-down effects of browning and warming on shallow lake food webs
(Wiley Blackwell Publishing, Inc, 2019-03)
Productivity and trophic structure of aquatic ecosystems result from a complex interplay of19 bottom-up and top-down forces that operate across benthic and pelagic food web compartments.20 Projected global changes urge the ...
Disentangling grazing and light controls on algal communities in grassland and afforested streams
(Springer Tokyo, 2019-01-30)
Our aim was to analyze the combined effect of grazing and light on composition, structure, functional diversity (FD) and succession of algal communities in two headwater streams (grassland and pine afforested). We hypothesized ...
Whole-brain models to explore altered states of consciousness from the bottom up
(Molecular Diversity Preservation International, 2020-09)
The scope of human consciousness includes states departing from what most of us experience as ordinary wakefulness. These altered states of consciousness constitute a prime opportunity to study how global changes in brain ...
Modeling the bottom temperature variation patterns on a coastal marine ecosystem of the Southwestern Atlantic Ocean (El Rincón), with special emphasis on thermal changes affecting fish populations
(Elsevier Science, 2020-12)
The detailed knowledge of temperature variation patterns in marine ecosystems is important to understand marine communities? dynamics. The present study modeled the historical (1980-2016) daily bottom temperatures on a ...
Bottom-up gamma and bipolar disorder, clinical and neuroepigenetic implications
(Wiley Blackwell Publishing, Inc, 2019-03)
Objectives: This limited review examines the role of the reticular activating system (RAS), especially the pedunculopontine nucleus (PPN), one site of origin of bottom-up gamma, in the symptoms of bipolar disorder (BD).Methods: ...
Trophic structure of frugivorous bats in the Neotropics: emergent historical patterns
(Wiley Blackwell Publishing, Inc, 2018-01)
1. Knowing the relative importance of phylogeny in dietary specialisation infrugivorous bats is key to understanding the ecological and evolutionary processes that drove their diversification and to elucidating the mechanisms ...
Novel Synthesis Without Separation and Purification Processes of Carbon Dots and Silver/Carbon Hybrid Nanoparticles
(Springer, 2019-07-24)
This paper presents two bottom-up methods for the green synthesis of spherical carbon dots (Cdots) and silver/Cdots (Ag@Cdots) nanoparticles at alkaline medium. Both syntheses are carried out without separation and ...