Comparative diel oxygen cycles preceding and during a Karenia bloom in Sarasota Bay, Florida, USA

Gary L. Hitchcock; Gary Kirkpatrick; Peter V.Z. Lane; Christopher Langdon

doi:10.1016/j.hal.2014.05.010

Comparative diel oxygen cycles preceding and during a Karenia bloom in Sarasota Bay, Florida, USA

Gary L. Hitchcock, Gary Kirkpatrick, Peter V.Z. Lane, Christopher Langdon

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The diel change in dissolved oxygen concentrations were recorded with an automated incubator containing a pulsed oxygen sensor in Sarasota Bay, Florida. The deployments occurred during a 'pre-bloom' period in May to June 2006, and during a harmful algal bloom dominated by Karenia brevis in September 2006. The diurnal (daylight) increase in dissolved oxygen concentrations varied from 16 to 104μmolO₂l^-1 with the corresponding nocturnal decrease in oxygen varying from 16 to 77μmolO₂l^-1. Nocturnal respiration consumed 42-113% of the diurnal net oxygen production with the minimum and maximum during the pre-bloom period. Hourly production rates closely followed fluctuations in irradiance with maximum rates in the late morning. Hourly oxygen utilization rates (community respiration) at night were highest during the first few hours after sunset.

Original language	English (US)
Pages (from-to)	95-100
Number of pages	6
Journal	Harmful Algae
Volume	38
Issue number	C
DOIs	https://doi.org/10.1016/j.hal.2014.05.010
State	Published - 2014

Keywords

Karenia brevis
Net community production
Respiration

ASJC Scopus subject areas

Aquatic Science
Plant Science

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10.1016/j.hal.2014.05.010

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title = "Comparative diel oxygen cycles preceding and during a Karenia bloom in Sarasota Bay, Florida, USA",

abstract = "The diel change in dissolved oxygen concentrations were recorded with an automated incubator containing a pulsed oxygen sensor in Sarasota Bay, Florida. The deployments occurred during a 'pre-bloom' period in May to June 2006, and during a harmful algal bloom dominated by Karenia brevis in September 2006. The diurnal (daylight) increase in dissolved oxygen concentrations varied from 16 to 104μmolO2l-1 with the corresponding nocturnal decrease in oxygen varying from 16 to 77μmolO2l-1. Nocturnal respiration consumed 42-113% of the diurnal net oxygen production with the minimum and maximum during the pre-bloom period. Hourly production rates closely followed fluctuations in irradiance with maximum rates in the late morning. Hourly oxygen utilization rates (community respiration) at night were highest during the first few hours after sunset.",

keywords = "Karenia brevis, Net community production, Respiration",

author = "Hitchcock, {Gary L.} and Gary Kirkpatrick and Lane, {Peter V.Z.} and Christopher Langdon",

note = "Funding Information: This research was supported by the Center for Oceans and Human Health at the University of Miami, and by the ECOHAB Florida program of the National Oceanic and Atmospheric Administration. Funding was provided by awards from the NIEHS ( 1 P50 ES12736 ), NSF ( OCE0432368/0911373 ), and NOAA ( NA06NOS4780246 ). Dr. D. Frazel provided logistical support throughout this project. Staff at the Mote Marine Laboratory contributed to the successful completion of the program. This is NOAA ECOHAB contribution #780.[SS] Publisher Copyright: {\textcopyright} 2014 Elsevier B.V. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.",

year = "2014",

doi = "10.1016/j.hal.2014.05.010",

language = "English (US)",

volume = "38",

pages = "95--100",

journal = "Harmful Algae",

issn = "1568-9883",

publisher = "Elsevier",

number = "C",

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AU - Hitchcock, Gary L.

AU - Kirkpatrick, Gary

AU - Lane, Peter V.Z.

AU - Langdon, Christopher

N1 - Funding Information: This research was supported by the Center for Oceans and Human Health at the University of Miami, and by the ECOHAB Florida program of the National Oceanic and Atmospheric Administration. Funding was provided by awards from the NIEHS ( 1 P50 ES12736 ), NSF ( OCE0432368/0911373 ), and NOAA ( NA06NOS4780246 ). Dr. D. Frazel provided logistical support throughout this project. Staff at the Mote Marine Laboratory contributed to the successful completion of the program. This is NOAA ECOHAB contribution #780.[SS] Publisher Copyright: © 2014 Elsevier B.V. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.

PY - 2014

Y1 - 2014

N2 - The diel change in dissolved oxygen concentrations were recorded with an automated incubator containing a pulsed oxygen sensor in Sarasota Bay, Florida. The deployments occurred during a 'pre-bloom' period in May to June 2006, and during a harmful algal bloom dominated by Karenia brevis in September 2006. The diurnal (daylight) increase in dissolved oxygen concentrations varied from 16 to 104μmolO2l-1 with the corresponding nocturnal decrease in oxygen varying from 16 to 77μmolO2l-1. Nocturnal respiration consumed 42-113% of the diurnal net oxygen production with the minimum and maximum during the pre-bloom period. Hourly production rates closely followed fluctuations in irradiance with maximum rates in the late morning. Hourly oxygen utilization rates (community respiration) at night were highest during the first few hours after sunset.

AB - The diel change in dissolved oxygen concentrations were recorded with an automated incubator containing a pulsed oxygen sensor in Sarasota Bay, Florida. The deployments occurred during a 'pre-bloom' period in May to June 2006, and during a harmful algal bloom dominated by Karenia brevis in September 2006. The diurnal (daylight) increase in dissolved oxygen concentrations varied from 16 to 104μmolO2l-1 with the corresponding nocturnal decrease in oxygen varying from 16 to 77μmolO2l-1. Nocturnal respiration consumed 42-113% of the diurnal net oxygen production with the minimum and maximum during the pre-bloom period. Hourly production rates closely followed fluctuations in irradiance with maximum rates in the late morning. Hourly oxygen utilization rates (community respiration) at night were highest during the first few hours after sunset.

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KW - Net community production

KW - Respiration

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Comparative diel oxygen cycles preceding and during a Karenia bloom in Sarasota Bay, Florida, USA

Abstract

Keywords

ASJC Scopus subject areas

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