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\hypersetup{pdftitle={Analysing Resilience/vulnerability and Adaptability (RVA) in Agricultural Land"=use Systems. Case Study: Tropical Agroforestry in Northern Brazil},pdfauthor={Daniel Callo-Concha, Frank Ewert},pdfsubject={Tropentag 2010: Abstract},pdfkeywords={Adaptability, agroforestry, Brazil, land-use systems, resilience, vulnerability},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 14-16, 2010, Zurich}}\\[1ex] \Large{``World Food System  ---\\A Contribution from Europe''\\[2ex]}}
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\begin{center}
\Large{\textbf{Analysing Resilience/vulnerability and Adaptability (RVA) in Agricultural Land"=use Systems. Case Study: Tropical Agroforestry in Northern Brazil\footnote{\textbf{Contact Address:} Daniel Callo-Concha, University of Bonn, Institute of Crop Science and Resource Conservation (INRES), Katzenburgweg 5, 53115~Bonn, Germany, \mbox{e-mail}: \email{dcalloc@uni-bonn.de}}\\[0.8ex]}}
\normalsize{\textsc{Daniel Callo-Concha$^{1}$, Frank Ewert$^{2}$}}
\end{center}
\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Bonn, Institute of Crop Science and Resource Conservation (INRES), Germany}}}
\item[]{\small{\textit{$^{2}$University of Bonn, Institute of Crop Science and Resource Conservation (INRES), }}}
\end{itemize*}
\index[author]{Callo-Concha, Daniel}
\index[author]{Ewert, Frank}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
The resilience/vulnerability and adaptability (RVA) approach evaluates the sustainability performance of land"=use systems, based on the analysis of their capacities to tolerate, recover, reorganise and adapt following/along a disturbing event/process in terms of system's identity, composition, structure and function.



Functional biodiversity of agricultural land"=use systems (ALUS) can be used as a surrogate of the systems abilities' to provide (agricultural) goods and (environmental) services at the same time.



In this research we propose and test the RVA approach as an operational procedure to assess the sustainability of land"=use systems performance across the agricultural production process.



Methodologically, this research is based on the successive application of multicriteria and sensitivity analyses. Multicriteria analysis, with strong stakeholders' involvement, determined and grouped the system's relevant proxies in three categories: ecological, productive and operational; later on, sensitivity analysis aims at disclosing the causal linkages among proxies and identifying the best decisions that optimise the overall system's performance. The research considers observed field data from agroforestry systems in northern Brazil between 2005 and 2007.



First results reveal that ecological and productive proxies perform mainly as buffering (shock absorbing) elements, while operational proxies have mainly active (influential, coercive) roles; the absence of proxies in the reactive (able to be influenced) and critical (unstable, triggering) fields, suggests a relatively high stability and resilience of the system. The active proxies rely principally on the technical background of the land users, their administrative capabilities and preference for environmentally"=friendly decisions.



Further analyses seek to consider the dynamics among these proxies for alternative decision making scenarios to optimise systems performances.



The proposed protocol provides a supportive platform for the assessment and analysis of multi"=demanded ALUS, and eventually can be used to compromise stakeholders' management decisions. Yet, further testing in different environments will be needed to improve the confidence of the proposed approach.



}

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\noindent \textbf{Keywords:} Adaptability, agroforestry, Brazil, land"=use systems, resilience, vulnerability
\index[key]{Adaptability}
\index[key]{Agroforestry}
\index[key]{Brazil}
\index[key]{Land"=use systems}
\index[key]{Resilience}
\index[key]{Vulnerability}
\end{document}