Evaluation of storm event inputs on levels of gross primary production and respiration in a drinking water reservoir

Nihar Samal; Peter A. Stæhr; Donald C. Pierson; Mark S. Zion; S. M. Pradhanang; David G. Smith

Evaluation of storm event inputs on levels of gross primary production and respiration in a drinking water reservoir

Nihar Samal, Peter A. Stæhr, Donald C. Pierson, Mark S. Zion, S. M. Pradhanang, David G. Smith

Department of Ecoscience - Marine Diversity and Experimental Ecology

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Abstract

Weather related episodic events are typically unpredictable and the episodic inputs of dissolved and particulate material during storm events can have important effects on lake and reservoir ecosystem function and also impact reservoir drinking water quality.

We evaluate the impacts of storm events using vertical profiles of temperature, dissolved oxygen, turbidity and chlorophyll automatically collected at 6 hour intervals in West basin of Ashokan Reservoir, which is a part of the New York City drinking water supply.

Using data from before, during and after storm events, we examine how the balance between GPP and R is influenced by storm related increases in turbidity and dissolved organic matter, which would in turn influence light attenuation and bacterial production.

Storm driven inputs to the reservoir periodically resulted in large input of suspended sediments raising water turbidity beyond 25 NTU. This reduced the euphotic depth several meters? Reducing light availability and thus GPP. Storm inputs stimulated R through elevated external inputs of organic matter as well as internal inputs from upwelling.

Original language	English
Publication date	9 Dec 2013
Publication status	Published - 9 Dec 2013
Event	2013 AGU Fall Meeting - San Francisco, United States Duration: 9 Dec 2013 → 13 Dec 2013

Conference

Conference	2013 AGU Fall Meeting
Country/Territory	United States
City	San Francisco
Period	09/12/2013 → 13/12/2013

Access to Document

AGU2013_NiharSamaletal_V3_PeterDonSubmitted manuscript, 1.92 MB

Cite this

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title = "Evaluation of storm event inputs on levels of gross primary production and respiration in a drinking water reservoir",

abstract = "Weather related episodic events are typically unpredictable and the episodic inputs of dissolved and particulate material during storm events can have important effects on lake and reservoir ecosystem function and also impact reservoir drinking water quality. We evaluate the impacts of storm events using vertical profiles of temperature, dissolved oxygen, turbidity and chlorophyll automatically collected at 6 hour intervals in West basin of Ashokan Reservoir, which is a part of the New York City drinking water supply. Using data from before, during and after storm events, we examine how the balance between GPP and R is influenced by storm related increases in turbidity and dissolved organic matter, which would in turn influence light attenuation and bacterial production.Storm driven inputs to the reservoir periodically resulted in large input of suspended sediments raising water turbidity beyond 25 NTU. This reduced the euphotic depth several meters? Reducing light availability and thus GPP. Storm inputs stimulated R through elevated external inputs of organic matter as well as internal inputs from upwelling.",

author = "Nihar Samal and St{\ae}hr, {Peter A.} and Pierson, {Donald C.} and Zion, {Mark S.} and Pradhanang, {S. M.} and Smith, {David G.}",

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T1 - Evaluation of storm event inputs on levels of gross primary production and respiration in a drinking water reservoir

AU - Samal, Nihar

AU - Stæhr, Peter A.

AU - Pierson, Donald C.

AU - Zion, Mark S.

AU - Pradhanang, S. M.

AU - Smith, David G.

PY - 2013/12/9

Y1 - 2013/12/9

N2 - Weather related episodic events are typically unpredictable and the episodic inputs of dissolved and particulate material during storm events can have important effects on lake and reservoir ecosystem function and also impact reservoir drinking water quality. We evaluate the impacts of storm events using vertical profiles of temperature, dissolved oxygen, turbidity and chlorophyll automatically collected at 6 hour intervals in West basin of Ashokan Reservoir, which is a part of the New York City drinking water supply. Using data from before, during and after storm events, we examine how the balance between GPP and R is influenced by storm related increases in turbidity and dissolved organic matter, which would in turn influence light attenuation and bacterial production.Storm driven inputs to the reservoir periodically resulted in large input of suspended sediments raising water turbidity beyond 25 NTU. This reduced the euphotic depth several meters? Reducing light availability and thus GPP. Storm inputs stimulated R through elevated external inputs of organic matter as well as internal inputs from upwelling.

AB - Weather related episodic events are typically unpredictable and the episodic inputs of dissolved and particulate material during storm events can have important effects on lake and reservoir ecosystem function and also impact reservoir drinking water quality. We evaluate the impacts of storm events using vertical profiles of temperature, dissolved oxygen, turbidity and chlorophyll automatically collected at 6 hour intervals in West basin of Ashokan Reservoir, which is a part of the New York City drinking water supply. Using data from before, during and after storm events, we examine how the balance between GPP and R is influenced by storm related increases in turbidity and dissolved organic matter, which would in turn influence light attenuation and bacterial production.Storm driven inputs to the reservoir periodically resulted in large input of suspended sediments raising water turbidity beyond 25 NTU. This reduced the euphotic depth several meters? Reducing light availability and thus GPP. Storm inputs stimulated R through elevated external inputs of organic matter as well as internal inputs from upwelling.

M3 - Poster

T2 - 2013 AGU Fall Meeting

Y2 - 9 December 2013 through 13 December 2013

ER -