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Your search keyword '"Machado, Ricardo B."' showing total 198 results
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198 results on '"Machado, Ricardo B."'

23. The Determinants of Employee Ownership Plan Implementation in EU Countries – the Quest for Economic Democracy: a First Look at the Evidence

Author

Machado Ricardo B.

Subjects
employee ownership, economic democracy, free markets, economic freedom, equity markets, Business, HF5001-6182
Abstract

Background and purpose: Kelso’s quest to identify the economic counterpart of political democracy and, as a corollary, his concern about the nature of the economic system’s organisation needed to support the institutions of a politically free society, contributed two important terms: economic power and democracy. Following Kelso’s reasoning, my research study aims to understand the determinants of the implementation of economic democracy, measured by the incidence of employee share ownership plans, within European Union countries.

Published
2016
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41. An evaluation of translocation as a tool to reduce burrowing owl collisions at airports.

Author

Santos, Eduardo G., Wiederhecker, Helga C., and Machado, Ricardo B.

Subjects
INTRODUCED animals, WILDLIFE management, OWLS, METROPOLIS
Abstract

Bird strikes at airports pose a human‐wildlife conflict (HWC) present in the world's major cities. Conflict mitigation frequently encompasses translocation, but its effectiveness in resolving HWCs is unclear. Here, we used the Burrowing Owl (Athene cunicularia) as a model species to test the effectiveness of translocation in reducing the number of bird strikes, the primary HWC at airports. We explored the translocation process, focusing on 3 aspects: 1) the influence of landscape structure on the persistence time of translocated animals at the released sites, 2) the influence of the release distance from the source on the return of translocated animals, and 3) the strike rate involving the species at the capture site at Brasília International Airport (BSB). Our results did not support burrowing owl translocation as a management option for solving the HWC at the BSB. We also found that the landscape composition did not guarantee individual persistence since the animals did not remain at release sites, regardless of the spatial configuration. Release distance did not explain the frequency of return of translocated animals to the capture site. Finally, we registered a higher number of collisions during translocation management. Thus, we believe that wildlife management programs must monitor translocated animals assessing if translocations are suited for the context. [ABSTRACT FROM AUTHOR]

Published
2023
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42. Listening in the dark: acoustics indices reveal bat species diversity in a tropical savannah.

Author

de Aguiar Silva, Claysson, Machado, Ricardo B., Silveira, Mauricio, and Aguiar, Ludmilla M. S.

Subjects
*CERRADOS, *BATS, *ACOUSTICS, *DISCRIMINANT analysis, *SPECIES diversity, *PROTECTED areas
Abstract

Surveying biodiversity using bioacoustics has become increasingly common worldwide, although it is mostly concentrated in temperate regions. The variety of automatic recorders, the development of free analytical tools, and several acoustic indices have increased the number of studies worldwide. The bioacoustic approach is essential for application in poorly surveyed regions with the pressure of human activities, such as the Brazilian cerrado. We tested the association of four bat diversity metrics (taxonomic, phylogenetic, and two functional diversity metrics, being one based on morphological and the other on acoustical traits, with five commonly used acoustic indices. We used a dataset of 608.4 h obtained from 30 sampling points in three protected areas in Central Brazil. Using Flexible Discriminant Analysis, we identified 21 bat species used in our subsequent analysis. The Entropy index was the best predictor of taxonomic and phylogenetic diversity, whereas the Acoustic Complexity Index was the best predictor of functional morphological diversity. We concluded that acoustic indices are suitable for estimating the diversity of insectivorous bats in the cerrado. However, we registered only part of the bat community, and bats can vary seasonally masking the real diversity of the study area; thus, this method should be used parsimoniously. [ABSTRACT FROM AUTHOR]

Published
2023
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