age, communities, growth, neotropical region, population ecology.


Estudos sobre produção são fundamentais para o entendimento de vários aspectos da organização e funcionamento dos sistemas aquáticos. O conhecimento sobre esse assunto ainda é muito pouco explorado, especialmente no que se refere aos riachos da região Neotropical. Neste estudo, apresentamos os principais marcos teóricos, os diferentes métodos consagrados na literatura, bem como as perspectivas sobre o tema para peixes de riachos neotropicais. Destacamos que todos os métodos disponíveis conduzem a resultados semelhantes e a escolha de um ou outro recai sobre as circunstâncias da pesquisa. Para peixes de riachos tropicais recomendamos o uso do Método da Distribuição de Tamanho. Apresentamos, também, um passo-a-passo para o uso do software R (pacote TropFishR) para os cálculos de produção. Uma abordagem comparativa é realizada para as taxas de produção conhecidas em regiões de clima tropical, temperado e mediterrâneo, sugerindo-se um padrão inverso entre a diversidade de espécies e as taxas de produção desses ambientes. Esperamos, com o presente estudo, estimular pesquisas nessa área do conhecimento, de forma a se incluir informações sobre os padrões e processos geradores de produção em riachos neotropicais em um contexto mais amplo da teoria ecológica.

FISH PRODUCTION IN STREAMS: REVIEWING PRINCIPLES, METHODS AND PERSPECTIVES: Production studies are fundamental for understanding various aspects of the organization and functioning of aquatic systems. The current state of knowledge on this subject is still little explored, especially regarding streams in the Neotropical region. In this study, we present the main theoretical frameworks, the different methods available in the literature, as well as perspectives on the topic for fish from neotropical streams. We emphasize that all available methods lead to similar results and the choice of one or the other falls on the circumstances of the research. For tropical stream fish we recommend using the Size Distribution Method. We also present a step-by-step guide for using the R software (TropFishR package) for production calculations. A comparative approach is carried out for the known production rates in Tropical, Temperate and Mediterranean regions, suggesting an inverse pattern between the species diversity and the production rates of these environments. We hope, with the present study, to stimulate research in this area of knowledge, to include the patterns and processes that generate production in neotropical streams in a broader context of ecological theory.


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