Počet záznamů: 1
Temporal changes in the abundance of barbel, Barbus barbus in the Jihlava River, Czech Republic
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SYSNO ASEP 0164555 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Temporal changes in the abundance of barbel, Barbus barbus in the Jihlava River, Czech Republic Tvůrce(i) Peňáz, Milan (UBO-W) SAI, SAI
Pivnička, K. (CZ)
Baruš, Vlastimil (UBO-W) RID, SAI
Prokeš, Miroslav (UBO-W) RID, SAI, SAIZdroj.dok. Folia zoologica. - : Ústav biologie obratlovců AV ČR, v. v. i. - ISSN 0139-7893
Roč. 52, č. 4 (2003), s. 441-448Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova barbel Vědní obor RIV EG - Zoologie CEP GA206/01/0586 GA ČR - Grantová agentura ČR IAA6093105 GA AV ČR - Akademie věd KSK6005114 GA AV ČR - Akademie věd CEZ AV0Z6093917 - UBO-W Anotace A four-year experiment with a total of 993 individually tagged barbel, Barbus barbus, resulted in the assessment of survival and abundance. The mean annual survival rate was 0.862, but the partial values assessed separately for seasons (spring - autumn and autumn - spring) differed considerably and the possible reasons for this phenomenon are discussed. On the basis of known survival rate, the abundance was subsequently estimated (for the entire studied stretch and per hectare) using the Petersen capture-recapture method for the period spring 1999 to autumn 2001, and the mean value reached 303 +- 110 ind.ha-1 (minimum 195, maximum 498 ind.ha-1). The Jolly-Seber method was used to estimate abundance from autumn 1999 to spring 2001 and gave a mean 425 +- 120 ind.ha-1 and a range 233-563 ind.ha-1. These results were in autumn 2001 supported by another simultaneously conducted census following the removal method by Zippin (316 ind.ha-1). Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2004
Počet záznamů: 1