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Controlling harmful cyanobacterial blooms in a world experiencing anthropogenic and climatic-induced change.
Sci Total Environ. 2011 Apr 15; 409(10):1739-45.ST

Abstract

Harmful (toxic, food web altering, hypoxia generating) cyanobacterial algal blooms (CyanoHABs) are proliferating world-wide due to anthropogenic nutrient enrichment, and they represent a serious threat to the use and sustainability of our freshwater resources. Traditionally, phosphorus (P) input reductions have been prescribed to control CyanoHABs, because P limitation is widespread and some CyanoHABs can fix atmospheric nitrogen (N(2)) to satisfy their nitrogen (N) requirements. However, eutrophying systems are increasingly plagued with non N(2) fixing CyanoHABs that are N and P co-limited or even N limited. In many of these systems N loads are increasing faster than P loads. Therefore N and P input constraints are likely needed for long-term CyanoHAB control in such systems. Climatic changes, specifically warming, increased vertical stratification, salinization, and intensification of storms and droughts play additional, interactive roles in modulating CyanoHAB frequency, intensity, geographic distribution and duration. In addition to having to consider reductions in N and P inputs, water quality managers are in dire need of effective tools to break the synergy between nutrient loading and hydrologic regimes made more favorable for CyanoHABs by climate change. The more promising of these tools make affected waters less hospitable for CyanoHABs by 1) altering the hydrology to enhance vertical mixing and/or flushing and 2) decreasing nutrient fluxes from organic rich sediments by physically removing the sediments or capping sediments with clay. Effective future CyanoHAB management approaches must incorporate both N and P loading dynamics within the context of altered thermal and hydrologic regimes associated with climate change.

Authors+Show Affiliations

Institute of Marine Sciences, University of North Carolina at Chapel Hill, 3431 Arendell Street, Morehead City, NC 28557, USA. hpaerl@email.unc.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Review

Language

eng

PubMed ID

21345482

Citation

Paerl, Hans W., et al. "Controlling Harmful Cyanobacterial Blooms in a World Experiencing Anthropogenic and Climatic-induced Change." The Science of the Total Environment, vol. 409, no. 10, 2011, pp. 1739-45.
Paerl HW, Hall NS, Calandrino ES. Controlling harmful cyanobacterial blooms in a world experiencing anthropogenic and climatic-induced change. Sci Total Environ. 2011;409(10):1739-45.
Paerl, H. W., Hall, N. S., & Calandrino, E. S. (2011). Controlling harmful cyanobacterial blooms in a world experiencing anthropogenic and climatic-induced change. The Science of the Total Environment, 409(10), 1739-45. https://doi.org/10.1016/j.scitotenv.2011.02.001
Paerl HW, Hall NS, Calandrino ES. Controlling Harmful Cyanobacterial Blooms in a World Experiencing Anthropogenic and Climatic-induced Change. Sci Total Environ. 2011 Apr 15;409(10):1739-45. PubMed PMID: 21345482.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Controlling harmful cyanobacterial blooms in a world experiencing anthropogenic and climatic-induced change. AU - Paerl,Hans W, AU - Hall,Nathan S, AU - Calandrino,Elizabeth S, Y1 - 2011/02/23/ PY - 2010/08/16/received PY - 2011/01/30/revised PY - 2011/02/01/accepted PY - 2011/2/25/entrez PY - 2011/2/25/pubmed PY - 2011/5/26/medline SP - 1739 EP - 45 JF - The Science of the total environment JO - Sci Total Environ VL - 409 IS - 10 N2 - Harmful (toxic, food web altering, hypoxia generating) cyanobacterial algal blooms (CyanoHABs) are proliferating world-wide due to anthropogenic nutrient enrichment, and they represent a serious threat to the use and sustainability of our freshwater resources. Traditionally, phosphorus (P) input reductions have been prescribed to control CyanoHABs, because P limitation is widespread and some CyanoHABs can fix atmospheric nitrogen (N(2)) to satisfy their nitrogen (N) requirements. However, eutrophying systems are increasingly plagued with non N(2) fixing CyanoHABs that are N and P co-limited or even N limited. In many of these systems N loads are increasing faster than P loads. Therefore N and P input constraints are likely needed for long-term CyanoHAB control in such systems. Climatic changes, specifically warming, increased vertical stratification, salinization, and intensification of storms and droughts play additional, interactive roles in modulating CyanoHAB frequency, intensity, geographic distribution and duration. In addition to having to consider reductions in N and P inputs, water quality managers are in dire need of effective tools to break the synergy between nutrient loading and hydrologic regimes made more favorable for CyanoHABs by climate change. The more promising of these tools make affected waters less hospitable for CyanoHABs by 1) altering the hydrology to enhance vertical mixing and/or flushing and 2) decreasing nutrient fluxes from organic rich sediments by physically removing the sediments or capping sediments with clay. Effective future CyanoHAB management approaches must incorporate both N and P loading dynamics within the context of altered thermal and hydrologic regimes associated with climate change. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/21345482/Controlling_harmful_cyanobacterial_blooms_in_a_world_experiencing_anthropogenic_and_climatic_induced_change_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(11)00119-7 DB - PRIME DP - Unbound Medicine ER -