Water quality as a threat to aquatic plants discriminating between the effects of nitrate, phosphate, boron and heavy metals on charophytes

Water quality as a threat to aquatic plants : discriminating between the effects of nitrate, phosphate, boron and heavy metals on charophytes

© 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1990. - 189(2011), 4 vom: 01. März, Seite 1051-1059
1. Verfasser: Lambert, Stephen J (VerfasserIn)
Weitere Verfasser: Davy, Anthony J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Metals, Heavy Nitrates Phosphates Water 059QF0KO0R Boron N9E3X5056Q
Beschreibung
Zusammenfassung:© 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.
• Eutrophication is a threat to wetlands worldwide. Elevated phosphorus concentration is often the main driver of loss of biodiversity and ecosystem function, but effects of phosphorus and nitrogen have proved largely inseparable, because they vary colinearly. Charophytes, aquatic algae that are very close to the evolutionary link with the land-plant lineage, provide a sensitive system for disentangling complex pollutant threats. • Here, we investigated aquatic vegetation and water quality at the principal sites for charophyte biodiversity in the UK and used hierarchical partitioning to discriminate independent effects of pollutants on their occurrence. A laboratory experiment examined the growth responses of a representative species (Chara globularis) to nitrate. • Nitrate-N exerted the greatest detrimental effect on charophyte occurrence in the field. Furthermore, growth of C. globularis in the laboratory was inhibited above very low concentrations. Smaller independent effects of copper (Cu), cadmium (Cd), cobalt (Co), phosphate-P, nickel (Ni), boron (B) and manganese (Mn) on charophyte occurrence were discriminated. • It is possible to separate the deleterious effects of phosphorus and nitrogen on aquatic organisms in the field. Nitrate is a critical factor and a mean annual average concentration limit of c. 2 mg l⁻¹ nitrate-N is necessary to protect charophytes and their services within wetland ecosystems
Beschreibung:Date Completed 18.05.2011
Date Revised 14.04.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/j.1469-8137.2010.03543.x