Effects of nutrients and dissolved organic matter on the response of phytoplankton to ultraviolet radiation: Experimental comparison in spring versus summer

Caren E. Scott, Jasmine E. Saros, Craig E. Williamson, Courtney R. Salm, Stephen C. Peters, David L. Mitchell

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The effects of nutrients and dissolved organic matter (DOM) on the response of phytoplankton community structure to ultraviolet radiation (UVR) was studied using natural phytoplankton assemblages from Lake Giles (Northeastern Pennsylvania), a temperate, oligotrophic, highly UVR-transparent lake. Microcosm experiments were conducted in 1-l bags in the spring and summer. A factorial design was used, with two UVR treatments (ambient and reduced), two nutrient treatments (control with no nutrients added, and nitrogen and phosphorus addition together), and two DOM treatments (control of 1 mg l-1 and doubled). In April, UVR affected the overall phytoplankton community structure, causing a shift in the dominant species. Significant interactive effects of UVR × nutrients and UVR × DOM were found on total phytoplankton biovolumes. In July, all taxa responded positively to the N + P addition, and were affected differentially by the UVR treatments. The initial communities varied in April and July, but Synura sp. and Chroomonas sp. were present in both seasons. Synura sp. responded positively to the addition of DOM in April and the reduction of UVR in July. Chroomonas sp. responded positively to the reduction of UVR in April and the addition of nutrients in July. The differential sensitivity of these two species suggests that changing environmental factors between spring and summer promoted differences in the relative importance of UVR in changing phytoplankton community structure.

Original languageEnglish (US)
Pages (from-to)155-166
Number of pages12
JournalHydrobiologia
Volume619
Issue number1
DOIs
StatePublished - Feb 1 2009

Fingerprint

dissolved organic matter
ultraviolet radiation
phytoplankton
nutrient
summer
nutrients
Chroomonas
Synura
community structure
comparison
effect
lakes
lake
microcosm
bags
environmental factor
phosphorus
environmental factors
nitrogen

Keywords

  • Nutrients
  • Phytoplankton
  • Seasonal effects
  • Ultraviolet radiation

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Effects of nutrients and dissolved organic matter on the response of phytoplankton to ultraviolet radiation : Experimental comparison in spring versus summer. / Scott, Caren E.; Saros, Jasmine E.; Williamson, Craig E.; Salm, Courtney R.; Peters, Stephen C.; Mitchell, David L.

In: Hydrobiologia, Vol. 619, No. 1, 01.02.2009, p. 155-166.

Research output: Contribution to journalArticle

Scott, Caren E. ; Saros, Jasmine E. ; Williamson, Craig E. ; Salm, Courtney R. ; Peters, Stephen C. ; Mitchell, David L. / Effects of nutrients and dissolved organic matter on the response of phytoplankton to ultraviolet radiation : Experimental comparison in spring versus summer. In: Hydrobiologia. 2009 ; Vol. 619, No. 1. pp. 155-166.
@article{8f04baf37f7345f9bf262a4f2b97c91b,
title = "Effects of nutrients and dissolved organic matter on the response of phytoplankton to ultraviolet radiation: Experimental comparison in spring versus summer",
abstract = "The effects of nutrients and dissolved organic matter (DOM) on the response of phytoplankton community structure to ultraviolet radiation (UVR) was studied using natural phytoplankton assemblages from Lake Giles (Northeastern Pennsylvania), a temperate, oligotrophic, highly UVR-transparent lake. Microcosm experiments were conducted in 1-l bags in the spring and summer. A factorial design was used, with two UVR treatments (ambient and reduced), two nutrient treatments (control with no nutrients added, and nitrogen and phosphorus addition together), and two DOM treatments (control of 1 mg l-1 and doubled). In April, UVR affected the overall phytoplankton community structure, causing a shift in the dominant species. Significant interactive effects of UVR × nutrients and UVR × DOM were found on total phytoplankton biovolumes. In July, all taxa responded positively to the N + P addition, and were affected differentially by the UVR treatments. The initial communities varied in April and July, but Synura sp. and Chroomonas sp. were present in both seasons. Synura sp. responded positively to the addition of DOM in April and the reduction of UVR in July. Chroomonas sp. responded positively to the reduction of UVR in April and the addition of nutrients in July. The differential sensitivity of these two species suggests that changing environmental factors between spring and summer promoted differences in the relative importance of UVR in changing phytoplankton community structure.",
keywords = "Nutrients, Phytoplankton, Seasonal effects, Ultraviolet radiation",
author = "Scott, {Caren E.} and Saros, {Jasmine E.} and Williamson, {Craig E.} and Salm, {Courtney R.} and Peters, {Stephen C.} and Mitchell, {David L.}",
year = "2009",
month = "2",
day = "1",
doi = "10.1007/s10750-008-9608-5",
language = "English (US)",
volume = "619",
pages = "155--166",
journal = "Hydrobiologia",
issn = "0018-8158",
publisher = "Springer Netherlands",
number = "1",

}

TY - JOUR

T1 - Effects of nutrients and dissolved organic matter on the response of phytoplankton to ultraviolet radiation

T2 - Experimental comparison in spring versus summer

AU - Scott, Caren E.

AU - Saros, Jasmine E.

AU - Williamson, Craig E.

AU - Salm, Courtney R.

AU - Peters, Stephen C.

AU - Mitchell, David L.

PY - 2009/2/1

Y1 - 2009/2/1

N2 - The effects of nutrients and dissolved organic matter (DOM) on the response of phytoplankton community structure to ultraviolet radiation (UVR) was studied using natural phytoplankton assemblages from Lake Giles (Northeastern Pennsylvania), a temperate, oligotrophic, highly UVR-transparent lake. Microcosm experiments were conducted in 1-l bags in the spring and summer. A factorial design was used, with two UVR treatments (ambient and reduced), two nutrient treatments (control with no nutrients added, and nitrogen and phosphorus addition together), and two DOM treatments (control of 1 mg l-1 and doubled). In April, UVR affected the overall phytoplankton community structure, causing a shift in the dominant species. Significant interactive effects of UVR × nutrients and UVR × DOM were found on total phytoplankton biovolumes. In July, all taxa responded positively to the N + P addition, and were affected differentially by the UVR treatments. The initial communities varied in April and July, but Synura sp. and Chroomonas sp. were present in both seasons. Synura sp. responded positively to the addition of DOM in April and the reduction of UVR in July. Chroomonas sp. responded positively to the reduction of UVR in April and the addition of nutrients in July. The differential sensitivity of these two species suggests that changing environmental factors between spring and summer promoted differences in the relative importance of UVR in changing phytoplankton community structure.

AB - The effects of nutrients and dissolved organic matter (DOM) on the response of phytoplankton community structure to ultraviolet radiation (UVR) was studied using natural phytoplankton assemblages from Lake Giles (Northeastern Pennsylvania), a temperate, oligotrophic, highly UVR-transparent lake. Microcosm experiments were conducted in 1-l bags in the spring and summer. A factorial design was used, with two UVR treatments (ambient and reduced), two nutrient treatments (control with no nutrients added, and nitrogen and phosphorus addition together), and two DOM treatments (control of 1 mg l-1 and doubled). In April, UVR affected the overall phytoplankton community structure, causing a shift in the dominant species. Significant interactive effects of UVR × nutrients and UVR × DOM were found on total phytoplankton biovolumes. In July, all taxa responded positively to the N + P addition, and were affected differentially by the UVR treatments. The initial communities varied in April and July, but Synura sp. and Chroomonas sp. were present in both seasons. Synura sp. responded positively to the addition of DOM in April and the reduction of UVR in July. Chroomonas sp. responded positively to the reduction of UVR in April and the addition of nutrients in July. The differential sensitivity of these two species suggests that changing environmental factors between spring and summer promoted differences in the relative importance of UVR in changing phytoplankton community structure.

KW - Nutrients

KW - Phytoplankton

KW - Seasonal effects

KW - Ultraviolet radiation

UR - http://www.scopus.com/inward/record.url?scp=57649233586&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57649233586&partnerID=8YFLogxK

U2 - 10.1007/s10750-008-9608-5

DO - 10.1007/s10750-008-9608-5

M3 - Article

AN - SCOPUS:57649233586

VL - 619

SP - 155

EP - 166

JO - Hydrobiologia

JF - Hydrobiologia

SN - 0018-8158

IS - 1

ER -