Increased ammonium levels occurring during benthic algal blooms are potentially toxic to fucalean algae
| Autor: | Andrea Bilajac, Ljiljana Iveša, Massimo Devescovi, Tamara Djakovac, Edi Gljušćić |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences biology 010604 marine biology & hydrobiology Cystoseira compressa fungi Plant Science Aquatic Science Ammonium levels biology.organism_classification 01 natural sciences Algal bloom Acinetospora crinita Algae Benthic zone Botany Environmental science ammonium toxicity benthic mucilage northern Adriatic Sea Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Botanica Marina. 64:267-274 |
| ISSN: | 1437-4323 0006-8055 |
| DOI: | 10.1515/bot-2021-0033 |
| Popis: | During the spring of 2016, benthic blooms of Acinetospora crinita (Ectocarpales, Phaeophyceae) producing voluminous mucilaginous aggregates frequently occurred at surveyed locations of the west Istrian Coast (northern Adriatic Sea, Croatia). In mucilage-affected macroalgal assemblages, the concentration of ammonium ranged from 50 to 300 μM. To investigate whether ammonium has the potential to harm fucalean species, a selected taxon, Cystoseira compressa was exposed to increased ammonium concentrations in laboratory conditions. Experiments revealed that exposure to 50 μM ammonium severely damaged the thalli while exposure to 300 μM caused complete necrosis of thalli in 2 days. These findings suggest that benthic algal blooms, enhanced by climate change and eutrophication, can negatively affect the populations of fucalean species due to production of ammonium during the decay of mucilaginous aggregates, causing thallus necrosis. |
| Databáze: | OpenAIRE |
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