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Rapid assessment methods of resilience for natural and agricultural systems

The resilience, ecological function and quality of both agricultural and natural systems were evaluated in the mountainous region of the Atlantic Rain Forest of Rio de Janeiro through Rapid Assessment Methods. For this goal new indicators were proposed, such as eco-volume, eco-height, bio-volume, vo...

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Published in:Anais da Academia Brasileira de Ciências 2010-12, Vol.82 (4), p.1095-1105
Main Authors: Torrico, Juan C.(University of Applied Sciences Cologne Institute for Technology in the Tropics), Janssens, Marc J.J.(University of Bonn)
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description The resilience, ecological function and quality of both agricultural and natural systems were evaluated in the mountainous region of the Atlantic Rain Forest of Rio de Janeiro through Rapid Assessment Methods. For this goal new indicators were proposed, such as eco-volume, eco-height, bio-volume, volume efficiency, and resilience index. The following agricultural and natural systems have been compared according: (i) vegetables (leaf, fruit and mixed); (ii) citrus; (iii) ecological system; (iv) cattle, (v) silvo-pastoral system, (vi) forest fragment and (vii) forest in regeneration stage (1, 2 and 3 years old). An alternative measure (index) of resilience was proposed by considering the actual bio-volume as a function of the potential eco-volume. The objectives and hypotheses were fulfilled; it is shown that there does exist a high positive correlation between resilience index, biomass, energy efficiency and biodiversity. Cattle and vegetable systems have lowest resilience, whilst ecological and silvo-pastoral systems have greatest resilience. This new approach offers a rapid, though valuable assessment tool for ecological studies, agricultural development and landscape planning, particularly in tropical countries. Foram avaliadas, em região montanhosa da Mata Atlântica do Rio de Janeiro a resiliência, função ecológica e qualidade tanto do sistema agrícola como natural, através dos métodos de avaliação rápida ("rapid assessment methods"). Para este fim, foram propostos novos indicadores como eco-volume, eco-altura, bio-volume, eficiência volumétrica e índice de resiliência. Os seguintes sistemas agrícolas e naturais foram comparados: (i) hortaliças (folhas, frutos e mistos); (ii) citros; (iii) sistema ecológico; (iv) gado; (v) sistema silvo-pastoral; (vi) fragmento florestal; (vii) floresta em estágio de recuperação (1, 2 e 3 anos de idade). Uma forma alternativa de resiliência foi proposta considerando o bio-volume real como uma função do eco-volume potencial. Os objetivos e hipóteses foram alcançados; demonstrou-se que existe uma correlação altamente positiva entre índice de resiliência, energia da biomassa, eficiência energética e biodiversidade. Pecuária e sistemas de hortaliças apresentaram as mais baixas resiliências enquanto sistemas ecológico e silvo-pastoral tiveram maiores resiliências. Esta nova estratégia oferece uma rápida e valiosa ferramenta de avaliação para estudos ecológicos, desenvolvimento agrícola e planejamento paisagístico, especialme
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For this goal new indicators were proposed, such as eco-volume, eco-height, bio-volume, volume efficiency, and resilience index. The following agricultural and natural systems have been compared according: (i) vegetables (leaf, fruit and mixed); (ii) citrus; (iii) ecological system; (iv) cattle, (v) silvo-pastoral system, (vi) forest fragment and (vii) forest in regeneration stage (1, 2 and 3 years old). An alternative measure (index) of resilience was proposed by considering the actual bio-volume as a function of the potential eco-volume. The objectives and hypotheses were fulfilled; it is shown that there does exist a high positive correlation between resilience index, biomass, energy efficiency and biodiversity. Cattle and vegetable systems have lowest resilience, whilst ecological and silvo-pastoral systems have greatest resilience. This new approach offers a rapid, though valuable assessment tool for ecological studies, agricultural development and landscape planning, particularly in tropical countries. Foram avaliadas, em região montanhosa da Mata Atlântica do Rio de Janeiro a resiliência, função ecológica e qualidade tanto do sistema agrícola como natural, através dos métodos de avaliação rápida ("rapid assessment methods"). Para este fim, foram propostos novos indicadores como eco-volume, eco-altura, bio-volume, eficiência volumétrica e índice de resiliência. Os seguintes sistemas agrícolas e naturais foram comparados: (i) hortaliças (folhas, frutos e mistos); (ii) citros; (iii) sistema ecológico; (iv) gado; (v) sistema silvo-pastoral; (vi) fragmento florestal; (vii) floresta em estágio de recuperação (1, 2 e 3 anos de idade). Uma forma alternativa de resiliência foi proposta considerando o bio-volume real como uma função do eco-volume potencial. Os objetivos e hipóteses foram alcançados; demonstrou-se que existe uma correlação altamente positiva entre índice de resiliência, energia da biomassa, eficiência energética e biodiversidade. Pecuária e sistemas de hortaliças apresentaram as mais baixas resiliências enquanto sistemas ecológico e silvo-pastoral tiveram maiores resiliências. Esta nova estratégia oferece uma rápida e valiosa ferramenta de avaliação para estudos ecológicos, desenvolvimento agrícola e planejamento paisagístico, especialmente em países tropicais.</abstract><cop>Brazil</cop><pub>Academia Brasileira de Ciências</pub><pmid>21152779</pmid><doi>10.1590/S0001-37652010000400027</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
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subjects Agriculture - methods
Animals
Atlantic Rain Forest
bio-volume
Biodiversity
Cattle
Conservation of Natural Resources - methods
eco-volume
Environmental Monitoring - methods
farming systems
Mata Atlântica
MULTIDISCIPLINARY SCIENCES
métodos rápidos de avaliação
natural systems
rapid assessment methods
resilience index
sistemas agrícolas
sistemas naturais
índice de resiliência
title Rapid assessment methods of resilience for natural and agricultural systems
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