Iron and iron-binding ligands as cofactors that limit cyanobacterial biomass across a lake trophic gradient
| Autor: | Ryan J. Sorichetti, Charles G. Trick, Irena F. Creed |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Cyanobacteria Siderophore Biomass (ecology) Ecology Range (biology) 010604 marine biology & hydrobiology 010501 environmental sciences Aquatic Science Biology biology.organism_classification 01 natural sciences Bioavailability Trophic state index Eutrophication 0105 earth and related environmental sciences Trophic level |
| Zdroj: | Freshwater Biology. 61:146-157 |
| ISSN: | 0046-5070 |
| DOI: | 10.1111/fwb.12689 |
| Popis: | SUMMARY 1. The frequency and intensity of cyanobacterial blooms (cyanoblooms) is increasing globally. While cyanoblooms in eutrophic (nutrient-rich) freshwater lakes are expected to persist and worsen with climate change projections, many of the ‘new’ cyanobloom reports pertain to oligotrophic (nutrient-poor) freshwater lakes with no prior history of cyanobloom occurrence. 2. Iron (Fe) is required in nearly all pathways of cyanobacterial macronutrient use, although its precise role in regulating cyanobacterial biomass across a lake trophic gradient is not fully understood. 3. In all lakes sampled representing a gradient in trophic status from oligotrophic to hypereutrophic (2.2–561.2 l gL � 1 total phosphorus), the relative cyanobacterial biomass was highest at low predicted Fe bioavailability in eutrophic Alberta lakes ( |
| Databáze: | OpenAIRE |
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