https://www.socictopen.socict.org/files/original/b64cc42e3102cf8201f2f67047ecba47.pdf 1e4f0e4d102d6d8db8ede78a073c170c 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 Ictiofauna de la Laguna Yahuarcaca y aspectos tróficos y reproductivos de cinco especies predominantes, Leticia - Colombia Creator An entity primarily responsible for making the resource José Ivan Mojica, Silvia Vejarano Rivadeneira Description An account of the resource The Amazon River floodplains are highly productive pulsing systems from an ecological point,due mostly to the periodic inflow of sediments that are dragged from the Andes by the rivers.In Colombia, this Amazon systems have not been intensely studied, therefore, this study tookplace in an floodplain lake of the Amazon river near the city of Leticia. Ichthyological sampleswere taken at four different times during a year according to the Amazon water level, ascendantwaters (April), high waters (June), descendant waters (July) and low waters (November), inorder to study the variation of fish over time and to create a reference collection of theYahurcaca lake. 134 species were found 54 of which are new reports for the Colombian Amazonregion. The fish community changes its composition and relative abundance throughoutthe periods studied, due to changes in resources related with the hydric pulse. The changes inthe diet during the different periods was analyzed for five predominant species: Triportheus albus,Triportheus angulatus, Triportheus elongatus(Characidae), Rhytiodus microlepisy Schizodon fasciatus(Anostomidae). The Triportheusspecies have a generalized feeding strategy and prefer terrestrialinsects, fish pieces, fruits and seeds. The two anostomids are clearly specialists and feed mostlyof vegetal material from autochthonous or alochthonous origin. In all the species the type andamount of food was different in each period, due to the variation in the resources offer whichrelates with the hydric pulse. The examination of the gonads of the species, suggests that all ofthem have one posture per year, because no mature females were found in any of the periodsanalyzed. Possibly the spawning occurs in the first months of the year, time when the water level begins to rise and floods the lake. The species would present high fecundity because even inimmature stages a high number of eggs was observed. The type and amount of feedingresources, the reproductive strategy and the time of spawning of the fishes are closely relatedwith the fluctuations of Yahuarcaca’s waterlevel, ultimately with the hydric pulse. Date A point or period of time associated with an event in the lifecycle of the resource 2000 Subject The topic of the resource Ecología animal, Peces, Población de Peces, ictiología, taxonomia Source A related resource from which the described resource is derived Acta Biológica Colombiana Publisher An entity responsible for making the resource available Universidad Nacional de Colombia Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Biology (General) Relation A related resource <a href="https://revistas.unal.edu.co/index.php/actabiol/article/view/26686" target="_blank" rel="noreferrer noopener">https://revistas.unal.edu.co/index.php/actabiol/article/view/26686</a>