The first analysis of heavy metals in the Grey Heron Ardea cinerea feathers from the Croatian colonies
| Autor: | Tibor Mikuska, Alma Mikuška, Zdenko Lončarić, Mirna Velki, Dora Bjedov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Croatian
biomonitoring non-invasive sampling apex predator birds metal pollution Croatia biology Zoology Heavy metals Metal pollution biology.organism_classification language.human_language Biomonitoring Grey heron Feather visual_art neinvazivno uzorkovanje vršni predaror ptice zagađenje metalima Hrvatska language visual_art.visual_art_medium Ardea Non invasive sampling |
| Zdroj: | Larus-Godišnjak Zavoda za ornitologiju Hrvatske akademije znanosti i umjetnosti Volume 55 Issue 1 |
| ISSN: | 0350-5189 1849-9198 |
| Popis: | This study represents the first analysis of heavy metals: lead and cadmium, as well as two metalloids: arsenic and selenium, in the feathers of Grey Herons breeding in Croatia. The Grey Heron was chosen as a model apex predator of the wetland ecosystem due to high trophic level, feeding habits, long lifespan and abundance. Sampling was conducted during the 2019 breeding season in April and May from six Grey Herons colonies in Croatia (Mrsunjski lug, Kopački rit, Piljenice, Kravarsko, Čepin, Slovinci), whose environment is heavily influenced by rivers Danube, Drava and Sava tributaries. The primary and secondary flight feathers were collected under the colonies as shed feathers or from dead birds. The feathers are a suitable non-invasive method for metal and metalloid analysis, and can reflect internal concentrations, depending on the metal. In the Slovinci colony, we measured the highest lead (Pb) and cadmium (Cd) concentrations (2194.53 ± 416.20 μg kg-1 dw and 79.30 ± 9.37 μg kg-1 dw, respectively). The highest arsenic (As) and selenium (Se) concentrations were found in the Čepin colony (359.70 ± 301.46 μg kg-1 dw and 3375.61 ± 2502.80 μg kg-1 dw, respectively). All the measured levels of heavy metals and metalloids are below concentrations that can cause adverse health effects in birds. Antropogenim aktivnostima povećava se razina metala i polumetala u okolišu rezultirajući njihovim zagađenjem. Mjerenje teških metala i polumetala neinvazivnim metodama dobar je pokazatelj stanja okoliša. U radu su predstavljeni rezultati prve analize teških metala: olova i kadmija te dva metaloida: arsena i selena u perju sivih čaplji Ardea cinerea koje se gnijezde u Hrvatskoj. Uzorkovanje pera sivih čaplji provedeno je tijekom sezone gniježđenja, u travnju i svibnju 2019. iz šest hrvatskih kolonija (Mrsunjski lug, Kopački rit, Piljenice, Kravarsko, Čepin i Slovinci). Primarna i sekundarna letna pera odraslih ptica prikupljena su ispod kolonija. Najveće koncentracije olova (Pb) zabilježene su u perju iz Slovinaca (2194,53 ± 416,20 μg kg-1 suhe tvari) i Kopačkog rita (1955,85 ± 1373,07 μg kg-1 suhe tvari). U Čepinu su izmjerene najviše koncentracije arsena (As; 359,70 ± 301,46 μg kg-1 suhe tvari) i selena (Se; 3375,61 ± 2502,80 μg kg-1 suhe tvari), a najviša razina kadmija (Cd) izmjerena je u koloniji Slovinci (79,30 ± 9,37 μg kg-1 suhe tvari). Sve izmjerene razine metala i polumetala su ispod koncentracija koje se smatraju toksičnima za ptice. Preliminarni rezultati ovog istraživanja ukazuju na relativno nisku zagađenost okoliša kontinentalne Hrvatske, no potrebna su dodatna istraživanja i uspostava kontinuiranog praćenja metala i polumetala u okolišu te njihov utjecaj na vršne predatore |
| Databáze: | OpenAIRE |
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