Publication

Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen

van de Poll, W., Kulk, G., Rozema, P., Brussaard, CPD., Visser, R. & Buma, A., Jul-2018, In : Elementa: Science of the Anthropocene. 60, 1

Research output: Contribution to journalArticleAcademicpeer-review

APA

van de Poll, W., Kulk, G., Rozema, P., Brussaard, CPD., Visser, R., & Buma, A. (2018). Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen. Elementa: Science of the Anthropocene, 60(1). https://doi.org/10.1525/elementa.307

Author

van de Poll, Willem ; Kulk, Gemma ; Rozema, Patrick ; Brussaard, CPD ; Visser, Ronald ; Buma, Anita. / Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen. In: Elementa: Science of the Anthropocene. 2018 ; Vol. 60, No. 1.

Harvard

van de Poll, W, Kulk, G, Rozema, P, Brussaard, CPD, Visser, R & Buma, A 2018, 'Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen' Elementa: Science of the Anthropocene, vol. 60, no. 1. https://doi.org/10.1525/elementa.307

Standard

Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen. / van de Poll, Willem; Kulk, Gemma; Rozema, Patrick; Brussaard, CPD; Visser, Ronald; Buma, Anita.

In: Elementa: Science of the Anthropocene, Vol. 60, No. 1, 07.2018.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

van de Poll W, Kulk G, Rozema P, Brussaard CPD, Visser R, Buma A. Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen. Elementa: Science of the Anthropocene. 2018 Jul;60(1). https://doi.org/10.1525/elementa.307


BibTeX

@article{da7de2f2c9c243fcbecaad14f8ddec47,
title = "Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen",
abstract = "Glacial meltwater discharge in fjords on the west coast of Spitsbergen is increasing due to climate change. The influence of this discharge on phytoplankton nutrient limitation, composition, productivity and photophysiology was investigated in central (M) and inner (G) Kongsfjorden (79°N, 11°40’E). Freshwater influx intensified stratification during June 2015, coinciding with surface nutrient depletion. Surface nutrient concentrations were negatively correlated with stratification strength at station M. Here, nitrate addition assays revealed increasing N limitation of surface phytoplankton during the second half of June, which was followed by a pronounced compositional change within the flagellate-dominated phytoplankton community as dictyochophytes (85{\%} of chl a) were replaced with smaller haptophytes (up to 60{\%} of chlorophyll a) and prasinophytes (20{\%} of chlorophyll a). These changes were less pronounced at station G, where surface phosphate, ammonium and nitrate concentrations were occasionally higher, and correlated with wind direction, suggesting wind-mediated transport of nutrient-enriched waters to this inner location. Therefore, glacial meltwater discharge mediated nutrient enrichment in the inner fjord, and enhanced stratification in inner and central Kongsfjorden. Surface chlorophyll a and water column productivity showed 3–4-fold variability, and did not correlate with nutrient limitation, euphotic zone depth, or changed taxonomic composition. However, the maximum carbon fixation rate and photosynthetic efficiency showed weak positive correlations to prasinophyte, cryptophyte, and haptophyte chlorophyll a. The present study documented relationships between stratification, N limitation, and changed phytoplankton composition, but surface chlorophyll a concentration, phytoplankton photosynthetic characteristics, and water column productivity in Kongsfjorden appeared to be driven by mechanisms other than N limitation.",
author = "{van de Poll}, Willem and Gemma Kulk and Patrick Rozema and CPD Brussaard and Ronald Visser and Anita Buma",
year = "2018",
month = "7",
doi = "10.1525/elementa.307",
language = "English",
volume = "60",
journal = "Elementa: Science of the Anthropocene",
issn = "2325-1026",
publisher = "UNIV CALIFORNIA PRESS",
number = "1",

}

RIS

TY - JOUR

T1 - Contrasting glacial meltwater effects on post-bloom phytoplankton on temporal and spatial scales in Kongsfjorden, Spitsbergen

AU - van de Poll, Willem

AU - Kulk, Gemma

AU - Rozema, Patrick

AU - Brussaard, CPD

AU - Visser, Ronald

AU - Buma, Anita

PY - 2018/7

Y1 - 2018/7

N2 - Glacial meltwater discharge in fjords on the west coast of Spitsbergen is increasing due to climate change. The influence of this discharge on phytoplankton nutrient limitation, composition, productivity and photophysiology was investigated in central (M) and inner (G) Kongsfjorden (79°N, 11°40’E). Freshwater influx intensified stratification during June 2015, coinciding with surface nutrient depletion. Surface nutrient concentrations were negatively correlated with stratification strength at station M. Here, nitrate addition assays revealed increasing N limitation of surface phytoplankton during the second half of June, which was followed by a pronounced compositional change within the flagellate-dominated phytoplankton community as dictyochophytes (85% of chl a) were replaced with smaller haptophytes (up to 60% of chlorophyll a) and prasinophytes (20% of chlorophyll a). These changes were less pronounced at station G, where surface phosphate, ammonium and nitrate concentrations were occasionally higher, and correlated with wind direction, suggesting wind-mediated transport of nutrient-enriched waters to this inner location. Therefore, glacial meltwater discharge mediated nutrient enrichment in the inner fjord, and enhanced stratification in inner and central Kongsfjorden. Surface chlorophyll a and water column productivity showed 3–4-fold variability, and did not correlate with nutrient limitation, euphotic zone depth, or changed taxonomic composition. However, the maximum carbon fixation rate and photosynthetic efficiency showed weak positive correlations to prasinophyte, cryptophyte, and haptophyte chlorophyll a. The present study documented relationships between stratification, N limitation, and changed phytoplankton composition, but surface chlorophyll a concentration, phytoplankton photosynthetic characteristics, and water column productivity in Kongsfjorden appeared to be driven by mechanisms other than N limitation.

AB - Glacial meltwater discharge in fjords on the west coast of Spitsbergen is increasing due to climate change. The influence of this discharge on phytoplankton nutrient limitation, composition, productivity and photophysiology was investigated in central (M) and inner (G) Kongsfjorden (79°N, 11°40’E). Freshwater influx intensified stratification during June 2015, coinciding with surface nutrient depletion. Surface nutrient concentrations were negatively correlated with stratification strength at station M. Here, nitrate addition assays revealed increasing N limitation of surface phytoplankton during the second half of June, which was followed by a pronounced compositional change within the flagellate-dominated phytoplankton community as dictyochophytes (85% of chl a) were replaced with smaller haptophytes (up to 60% of chlorophyll a) and prasinophytes (20% of chlorophyll a). These changes were less pronounced at station G, where surface phosphate, ammonium and nitrate concentrations were occasionally higher, and correlated with wind direction, suggesting wind-mediated transport of nutrient-enriched waters to this inner location. Therefore, glacial meltwater discharge mediated nutrient enrichment in the inner fjord, and enhanced stratification in inner and central Kongsfjorden. Surface chlorophyll a and water column productivity showed 3–4-fold variability, and did not correlate with nutrient limitation, euphotic zone depth, or changed taxonomic composition. However, the maximum carbon fixation rate and photosynthetic efficiency showed weak positive correlations to prasinophyte, cryptophyte, and haptophyte chlorophyll a. The present study documented relationships between stratification, N limitation, and changed phytoplankton composition, but surface chlorophyll a concentration, phytoplankton photosynthetic characteristics, and water column productivity in Kongsfjorden appeared to be driven by mechanisms other than N limitation.

U2 - 10.1525/elementa.307

DO - 10.1525/elementa.307

M3 - Article

VL - 60

JO - Elementa: Science of the Anthropocene

JF - Elementa: Science of the Anthropocene

SN - 2325-1026

IS - 1

ER -

ID: 62976927