https://socictopen.socict.org/files/original/0ecfd684990ec7b7e45e03f70d887137.pdf d25a358f8e5199ad1359677d81ce3aae Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Agricultura sostenible Description An account of the resource Dominio científico: Agricultura sostenible Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Estrutura de assembléias de Muscidae (Diptera) no Paraná: uma análise por modelos nulos Muscidae (Diptera) assemblage structure in Paraná: a null model analysis Creator An entity primarily responsible for making the resource Jaime Iván Rodríguez-Fernández, Claudio José Barros de Carvalho, Mauricio Oswaldo Moura Description An account of the resource Geralmente pensa-se que a estrutura das comunidades está determinada pela competição interespecífica. Os críticos desta idéia indicam que devemos primeiramente demonstrar a estrutura com modelos nulos par testar se a estrutura realmente existe. Aqui, utilizamos 179 espécies predadoras e saprófagas de moscas da família Muscidae (Diptera) que foram capturadas com armadilha Malaise em seis locais no Estado do Paraná, durante um ano de estudo. Para testar a estrutura das comunidades, geramos cinco matrizes de presença-ausência (1-0): duas por guildas tróficas, duas por tipo de habitat e uma matriz geral (taxonômica). Dois índices de co-ocorrência (C) e covariância (V) de espécies foram calculados nas matrizes desenvolvidas através de 5000 aleatorizações de Monte Carlo. Estas seguiram duas diferentes premissas: 1) número de espécies por local fixo, e 2) proporções constantes de espécies em todos os locais. Comparações com modelos nulos de comunidades mostram que a assembléia 'taxonômica' de espécies tem uma falsa estrutura, enquanto assembléias de espécies 'ecológicas' têm uma estrutura verdadeira. Enquanto as assembléias ecológicas são consistentes com a teoria de competição interespecífica como uma causa da estrutura das comunidades, é possível que outras causas possam também ser importantes.Community structure is often thought to be determined by interspecific competition. Critics of this idea state that we must first demonstrate structure with null models to test whether structure indeed exists. Here, we use 179 predatory and saprophagic species of flies in the family Muscidae (Diptera) that were captured in Malaise traps in six locations in Paraná State during one year of study. To test community structure, we generated five presence-absence (1-0) matrices: two by trophic guilds, two by habitat, and one general matrix (taxonomic). Two indices of co-occurrence (C) and covariance (V) of species were calculated in the matrices developed through 5,000 Monte Carlo randomizations. Randomizations followed two different assumptions: 1) fixed number of species per location, and 2) constant proportions of species at all locations. Comparisons with null-model communities showed that 'taxonomic' species assemblage had a false structure, while 'ecological' species assemblages had true structure. Although the ecological assemblages are consistent with the theory of interspecific competition as a cause of community structure, it remains possible that other causes of structure may also be important. Date A point or period of time associated with an event in the lifecycle of the resource 2006 Subject The topic of the resource Aleatorização, Community ecology, co-ocorrência de espécies, coexistence, coexistência, competition, competição, ecología de comunidades, randomization, species co-ocurrence Identifier An unambiguous reference to the resource within a given context 10.1590/S0085-56262006000100014 Source A related resource from which the described resource is derived Revista Brasileira de Entomologia Publisher An entity responsible for making the resource available Sociedade Brasileira de Entomologia Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Zoology Relation A related resource <a href="http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S0085-56262006000100014" target="_blank" rel="noreferrer noopener">http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S0085-56262006000100014</a>