Fishes in MZNA-VERT: cyprinid and salmonid communities in the rivers Erro and Urederra (Spain). PhD project, Cristina García-FrescaAcronym: ICHTY-PREU
The presence, condition and structure of fish communities are an essential part in fluvial ecosystems because they affect invertebrate communities, plants and other vertebrates. The knowledge of the factors affecting fish populations is necessary for the good management of the rivers. In this study, cyprinid and salmonid species are studied on the Urederra and the Erro rivers to determine their health and conservation status (García-Fresca, 2003). The study of the populations of each species provided data about their size distribution, age, absolute and relative fecundity, gonadosomatic index and habitat. The estimation of the abundances, densities and distributions of fish depended on the date of the sampling, the characteristics of the sampled portion and behavior of the species.
All specimens were collected in the Erro and Urederra Rivers, in the north of Spain. Both rivers are tributary of Arga river and, later, of Ebro river that flows into the Mediterranean sea.
The aim of the present data set is to provide all information of the records of freshwater fishes related with the project thesis of Dr. García-Fresca. In this study, populations of cyprinid and salmonid species were studied on the Urederra and the Erro rivers (Navarra, north of Spain) to determine their health and conservation status as well as several aspects of their biology.
Species identification was performed by R. Miranda and C. García-Fresca using suitable literature (Maitland & Linsell 1977) and scientific names were validated using the W. N. Eschmeyer’s Catalog of Fishes (Eschmeyer 2014). Specimens were returned to the river or deposited in the Museum of Zoology of the University of Navarra. Each specimen was labelled with a unique collection number. Darwin test software (v3.3 Ortega-Maqueda and Pando 2008) was used to check out possible mistakes in the coordinates, characters and the format of dates.
Specimens were sampled following the procedure described in the Sampling description section. The individuals were identified, measured and released in the majority of cases. In some cases the specimens were euthanized and deposited on the Museum of Zoology of the University of Navarra in labelled jars, preserved first with formalin and, more recently, with 70% ethyl alcohol. Field data was revised, digitalised and incorporated to the MZNA database (Zootron v4.5, Ariño 1991). The dataset was exported to DarwinCore v1.4 format and revised to correct errors to adequate it to DarwinCore standars. Metadata information was added and the Darwin Core Archive was incorporated to the Spanish GBIF IPT.
Type of content
Includes: point occurrence data.
MZNA (2016): Fishes in MZNA-VERT: cyprinid and salmonid communities in the rivers Erro and Urederra (Spain). PhD project, Cristina García-Fresca. v1. University of Navarra, Museum of Zoology. Dataset/Occurrence. http://www.gbif.es/ipt/resource?r=mzna_ichty-preu&v=1.0
This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
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