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Publicações

Publicações por Abílio Pereira Pacheco

2013

Forest fire management to avoid unintended consequences: A case study of Portugal using system dynamics

Autores
Collins, RD; de Neufville, R; Claro, J; Oliveira, T; Pacheco, AP;

Publicação
JOURNAL OF ENVIRONMENTAL MANAGEMENT

Abstract
Forest fires are a serious management challenge in many regions, complicating the appropriate allocation to suppression and prevention efforts. Using a System Dynamics (SD) model, this paper explores how interactions between physical and political systems in forest fire management impact the effectiveness of different allocations. A core issue is that apparently sound management can have unintended consequences. An instinctive management response to periods of worsening fire severity is to increase fire suppression capacity, an approach with immediate appeal as it directly treats the symptom of devastating fires and appeases the public. However, the SD analysis indicates that a policy emphasizing suppression can degrade the long-run effectiveness of forest fire management. By crowding out efforts to preventative fuel removal, it exacerbates fuel loads and leads to greater fires, which further balloon suppression budgets. The business management literature refers to this problem as the firefighting trap, wherein focus on fixing problems diverts attention from preventing them, and thus leads to inferior outcomes. The paper illustrates these phenomena through a case study of Portugal, showing that a balanced approach to suppression and prevention efforts can mitigate the self-reinforcing consequences of this trap, and better manage long-term fire damages. These insights can help policymakers and fire managers better appreciate the interconnected systems in which their authorities reside and the dynamics that may undermine seemingly rational management decisions.

2014

Flexible design of a cost-effective network of fire stations, considering uncertainty in the geographic distribution and intensity of escaped fires

Autores
Pacheco, AP; Neufville, Rd; Claro, J; Fornés, H;

Publicação
Advances in forest fire research

Abstract

2014

Rekindles or one-o quality in forest fire fighting: validating the pressure on firefighters and implications for forest fire management in Portugal

Autores
Pacheco, AP; Claro, J; Oliveira, T;

Publicação
Advances in forest fire research

Abstract

2018

Operational flexibility in forest fire prevention and suppression: a spatially explicit intra-annual optimization analysis, considering prevention, (pre)suppression, and escape costs

Autores
Pacheco, AP; Claro, J;

Publicação
EUROPEAN JOURNAL OF FOREST RESEARCH

Abstract
Increasing wildfire threats and costs escalate the complexity of forest fire management challenges, which is grounded in complex interactions between ecological, social, economic, and policy factors. It is immersed in this difficult context that decision-makers must settle on an investment mix within a portfolio of available options, subject to limited funds and under great uncertainty. We model intra-annual fire management as a problem of multistage capacity investment in a portfolio of management resources, enabling fuel treatments and fire preparedness. We consider wildfires as the demand, with uncertainty in the severity of the fire season and in the occurrence, time, place, and severity of specific fires. We focus our analysis on the influence of changes in the volatility of wildfires and in the costs of escaped wildfires, on the postponement of capacity investment along the year, on the optimal budget, and on the investment mix. Using a hypothetical test landscape, we verify that the value of postponement increases significantly for scenarios of increased uncertainty (higher volatility) and higher escape costs, as also does the optimal budget (although not proportionally to the changes in the escape costs). Additionally, the suppression/prevention budget ratio is highly sensitive to changes in escape costs, while it remains mostly insensitive to changes in volatility. Furthermore, we show the policy implications of these findings at operational (e.g., spatial solutions) and strategic levels (e.g., climate change). Exploring the impact of increasing escape costs in the optimal investment mix, we identified in our instances four qualitative system stages, which can be related to specific socioecological contexts and used as the basis for policy (re)design. In addition to questioning some popular myths, our results highlight the value of fuel treatments and the contextual nature of the optimal portfolio mix.

2018

Does it pay to invest in better suppression resources?: policy analysis of alternative scenarios with simulation

Autores
Pacheco, AP; et. al.,;

Publicação
Advances in forest fire research 2018

Abstract

2018

Flexible design of a helipad network for forest firefighting helicopters, applied to the case of Sardinia

Autores
Torres, H; et. al.,;

Publicação
Advances in forest fire research 2018

Abstract

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