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Mitigating the Expansion of Harmful Algal Blooms Across the Freshwater-to-Marine Continuum.
Environ Sci Technol. 2018 05 15; 52(10):5519-5529.ES

Abstract

Anthropogenic nutrient overenrichment, coupled with rising temperatures, and an increasing frequency of extreme hydrologic events (storms and droughts) are accelerating eutrophication and promoting the expansion of harmful algal blooms (HABs) across the freshwater-to-marine continuum. All HABs-with a focus here on cyanobacterial blooms-pose serious consequences for water supplies, fisheries, recreational uses, tourism, and property values. As nutrient loads grow in watersheds, they begin to compound the effects of legacy stores. This has led to a paradigm shift in our understanding of how nutrients control eutrophication and blooms. Phosphorus (P) reductions have been traditionally prescribed exclusively for freshwater systems, while nitrogen (N) reductions were mainly stressed for brackish and coastal waters. However, because most systems are hydrologically interconnected, single nutrient (e.g., P only) reductions upstream may not necessarily reduce HAB impacts downstream. Reducing both N and P inputs is the only viable nutrient management solution for long-term control of HABs along the continuum. This article highlights where paired physical, chemical, or biological controls may improve beneficial uses in the short term, and offers management strategies that should be enacted across watershed scales to combat the global expansion of HABs across geographically broad freshwater-to-marine continua.

Authors+Show Affiliations

Institute of Marine Sciences , University of North Carolina at Chapel Hill , 3431 Arendell Street , Morehead City , North Carolina 28557 , United States.Bend Genetics , 87 Scripps Drive, Ste. 108 , Sacramento , California 95825 , United States.Ocean Sciences & Institute for Marine Sciences , University of California Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States.

Pub Type(s)

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

Language

eng

PubMed ID

29656639

Citation

Paerl, Hans W., et al. "Mitigating the Expansion of Harmful Algal Blooms Across the Freshwater-to-Marine Continuum." Environmental Science & Technology, vol. 52, no. 10, 2018, pp. 5519-5529.
Paerl HW, Otten TG, Kudela R. Mitigating the Expansion of Harmful Algal Blooms Across the Freshwater-to-Marine Continuum. Environ Sci Technol. 2018;52(10):5519-5529.
Paerl, H. W., Otten, T. G., & Kudela, R. (2018). Mitigating the Expansion of Harmful Algal Blooms Across the Freshwater-to-Marine Continuum. Environmental Science & Technology, 52(10), 5519-5529. https://doi.org/10.1021/acs.est.7b05950
Paerl HW, Otten TG, Kudela R. Mitigating the Expansion of Harmful Algal Blooms Across the Freshwater-to-Marine Continuum. Environ Sci Technol. 2018 05 15;52(10):5519-5529. PubMed PMID: 29656639.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mitigating the Expansion of Harmful Algal Blooms Across the Freshwater-to-Marine Continuum. AU - Paerl,Hans W, AU - Otten,Timothy G, AU - Kudela,Raphael, Y1 - 2018/04/25/ PY - 2018/4/17/pubmed PY - 2019/9/19/medline PY - 2018/4/17/entrez SP - 5519 EP - 5529 JF - Environmental science & technology JO - Environ Sci Technol VL - 52 IS - 10 N2 - Anthropogenic nutrient overenrichment, coupled with rising temperatures, and an increasing frequency of extreme hydrologic events (storms and droughts) are accelerating eutrophication and promoting the expansion of harmful algal blooms (HABs) across the freshwater-to-marine continuum. All HABs-with a focus here on cyanobacterial blooms-pose serious consequences for water supplies, fisheries, recreational uses, tourism, and property values. As nutrient loads grow in watersheds, they begin to compound the effects of legacy stores. This has led to a paradigm shift in our understanding of how nutrients control eutrophication and blooms. Phosphorus (P) reductions have been traditionally prescribed exclusively for freshwater systems, while nitrogen (N) reductions were mainly stressed for brackish and coastal waters. However, because most systems are hydrologically interconnected, single nutrient (e.g., P only) reductions upstream may not necessarily reduce HAB impacts downstream. Reducing both N and P inputs is the only viable nutrient management solution for long-term control of HABs along the continuum. This article highlights where paired physical, chemical, or biological controls may improve beneficial uses in the short term, and offers management strategies that should be enacted across watershed scales to combat the global expansion of HABs across geographically broad freshwater-to-marine continua. SN - 1520-5851 UR - https://www.unboundmedicine.com/medline/citation/29656639/Mitigating_the_Expansion_of_Harmful_Algal_Blooms_Across_the_Freshwater_to_Marine_Continuum_ L2 - https://doi.org/10.1021/acs.est.7b05950 DB - PRIME DP - Unbound Medicine ER -