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dc.date.available
2022-06-30T16:47:36Z
dc.identifier.citation
Borzone Mas, Dalmiro; Scarabotti, Pablo Augusto; (2022): Datos de ocurrencia y tróficos de los depredadores del Río Paraná. Consejo Nacional de Investigaciones Científicas y Técnicas. (dataset). http://hdl.handle.net/11336/160954
dc.identifier.uri
http://hdl.handle.net/11336/160954
dc.description.abstract
Datos utilizados para el trabajo Symmetries and asymmetries in the topological roles of piscivorous fishes between occurrence networks and food webs , publicado en el Journal of animal ecology. En esta base de datos observamos las ocurrencias y las interacciones tróficas de 16 piscívoros del Río Paraná medio. Para la mayoría de las observaciones se presentan la fecha de captura, la especie, longitud estandar y peso total.
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.title
Datos de ocurrencia y tróficos de los depredadores del Río Paraná
dc.type
dataset
dc.date.updated
2022-06-30T13:01:30Z
dc.description.fil
Fil: Borzone Mas, Dalmiro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: Scarabotti, Pablo Augusto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.datacite.PublicationYear
2022
dc.datacite.Creator
Borzone Mas, Dalmiro
dc.datacite.Creator
Scarabotti, Pablo Augusto
dc.datacite.affiliation
Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología
dc.datacite.affiliation
Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología
dc.datacite.publisher
Consejo Nacional de Investigaciones Científicas y Técnicas
dc.datacite.subject
Ecología
dc.datacite.subject
Ciencias Biológicas
dc.datacite.subject
CIENCIAS NATURALES Y EXACTAS
dc.datacite.date
20/03/2009-04/01/2020
dc.datacite.DateType
Creado
dc.datacite.language
spa
dc.datacite.version
1.0
dc.datacite.description
Fishes were sampled from 27 water bodies (Figure 1) grouped in four habitat types according to their flow, size and connectivity: major rivers, secondary channels, connected lakes and isolated lakes. The major rivers consisted of lotic environments that had an average width between 330 and 1100 m. The secondary channels had an average channel width between 28 and 137 m, and meandered among the floodplain islands. The connected lakes were lentic environments that had a permanent connection with the smaller and larger channels and had a surface area between 3.4 and 240 ha and a depth between 0.7 and 3.1 m at average water level. The isolated lakes consisted of lentic environments whose connection with the channels was interrupted throughout the hydrological period and presented areas between 4.1 and 40.1 ha. Given that ecological communities of the Paraná River floodplain vary at multiple spatial and temporal scales, it is logistically impossible to catch the whole variation in species occurrences and trophic interactions in a single sampling design. For this reason, we used two different but complementary sampling designs, one focusing on the spatial variation and another one focusing on temporal variation. In the first sampling design, we surveyed 27 different water bodies in four different occasions with an annual frequency during the years 2013, 2014, 2015 and 2016. The four spatial sampling events were timed to cover the four different hydroclimatic conditions. In the second sampling design we surveyed 4 water bodies in 14 occasions with a bi-monthly frequency between 2015 and 2017 (total samples: 152 communities).
Given that the study spanned periods of high and low waters during warm and cold seasons, each the 18 surveys fell within one of four different hydro-climatic conditions: low waters, cold season; high waters, cold season; low waters, warm season and high waters, warm season. In this design, we considered hydrometric variability in the system and thermal seasonality because they are the main temporal drivers of fish assemblage composition and ecosystem functioning (Scarabotti et al. 2017). This classification properly captures the similarity in environmental conditions among surveys with similar hydro-period and thermal conditions (see Supplementary table 1). Samplings were classified in cold (autumn and winter; April to September) and warm periods (spring and summer, October to March) and in low water (below overflow level) and high water periods (above overflow level), totaling four different combinations of climatic and hydrologic conditions: high waters-cold season (HC), high waters-warm season (HW), low waters-cold season (LC) and low waters-warm season (LW). We used an overflow level of 3.42 m at the Paraná city gauge station (Scarabotti et al., 2017).
Fish were collected using both gillnets and beach seine nets. We deployed two gillnet batteries, each one of 80 m long x 1.7 m high, composed of eight panels of 10 m long with different mesh sizes (30, 42, 54, 70, 90, 110, 130 and 160 mm between opposed knots) for 12 h (dusk–dawn). Piscivorous fishes were captured and euthanized in the field by medullary denervation after percussive stunning. Each individual was identified, measured and weighed. The stomachs were preserved in 10% formalin and examined in the laboratory under a binocular microscope. Fish prey items were identified at species level whereas the invertebrate preys were identified at order level.
dc.datacite.DescriptionType
Métodos
dc.datacite.FundingReference
PICT 2018-1478
dc.datacite.FunderName
Ministerio de Ciencia, Tecnología e Innovación Productiva. Agencia Nacional de Promoción Científica y Tecnológica. Fondo para la Investigación Científica y Tecnológica
dc.subject.keyword
Peces
dc.subject.keyword
Río Paraná Medio
dc.subject.keyword
Ocurrencia
dc.subject.keyword
Interacciones tróficas
dc.datacite.resourceTypeGeneral
dataset
dc.conicet.datoinvestigacionid
1727
dc.datacite.awardTitle
El rol de los peces en la integración de la red trófica del río Paraná a través de escalas espaciales y temporales
dc.datacite.geolocation
: 31°47´43´´S, 60°39´58´´W; 31°36´47´´S, 60°29´43´´W; 31°48´59´´S, 60°42´05´W;
dc.datacite.formatedDate
2009-2020
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