In situ and experimental evidence for effects of elevated pH on protistan and metazoan grazers

Benni Winding Hansen, Christian M B Andersen, Per Juel Hansen, Torkel Gissel Nielsen, Bent Vismann, Peter Tiselius

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Plankton succession was studied in a hyper-eutrophic stratified estuary, Mariager Fjord, Denmark. Above the pycnocline (15 m) pH increased from 8.5 to 9.2 after 5 d of sunny weather due to high primary production. The protistan grazers were dominated by heterotrophic dinoflagellates and mixotrophic and heterotrophic ciliates. Metazooplankton was dominated by meroplankton, rotifers, and the copepod, Acartia tonsa, all with a relatively low biomass. Cirriped nauplii occupied the upper strata while polychaete larvae the whole water column. Bivalve larvae occurred occasionally above the pycnocline even at very high pH. In exposure experiments the mixotrophic ciliate Mesodinium rubrum was the least pH tolerant species, followed by Strombidium spp., which did not cope well with seawater pH >8.5. Some heterotrophic dinoflagellates were more tolerant with net growth at pH >9. The predominant rotifer Synchaeta sp. tolerated up to pH 9.5 and the copepod survived pH 10 but stopped producing eggs at pH 9.5 with unaffected egg hatching success. The polychaeta and cirripedia larvae tolerated pH 9.5, but bivalvia larvae showed decreased survival already at pH 8.5. Based on in situ distribution patterns and pH exposure experiments we suggest that pH indeed contribute to structuring zooplankton distrib
OriginalsprogEngelsk
TidsskriftJournal of Plankton Research
Vol/bind41
Udgave nummer3
Sider (fra-til)257-271
Antal sider15
ISSN0142-7873
DOI
StatusUdgivet - 2019

Citer dette

Hansen, Benni Winding ; Andersen, Christian M B ; Hansen, Per Juel ; Nielsen, Torkel Gissel ; Vismann, Bent ; Tiselius, Peter. / In situ and experimental evidence for effects of elevated pH on protistan and metazoan grazers. I: Journal of Plankton Research. 2019 ; Bind 41, Nr. 3. s. 257-271.
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title = "In situ and experimental evidence for effects of elevated pH on protistan and metazoan grazers",
abstract = "Plankton succession was studied in a hyper-eutrophic stratified estuary, Mariager Fjord, Denmark. Above the pycnocline (15 m) pH increased from 8.5 to 9.2 after 5 d of sunny weather due to high primary production. The protistan grazers were dominated by heterotrophic dinoflagellates and mixotrophic and heterotrophic ciliates. Metazooplankton was dominated by meroplankton, rotifers, and the copepod, Acartia tonsa, all with a relatively low biomass. Cirriped nauplii occupied the upper strata while polychaete larvae the whole water column. Bivalve larvae occurred occasionally above the pycnocline even at very high pH. In exposure experiments the mixotrophic ciliate Mesodinium rubrum was the least pH tolerant species, followed by Strombidium spp., which did not cope well with seawater pH >8.5. Some heterotrophic dinoflagellates were more tolerant with net growth at pH >9. The predominant rotifer Synchaeta sp. tolerated up to pH 9.5 and the copepod survived pH 10 but stopped producing eggs at pH 9.5 with unaffected egg hatching success. The polychaeta and cirripedia larvae tolerated pH 9.5, but bivalvia larvae showed decreased survival already at pH 8.5. Based on in situ distribution patterns and pH exposure experiments we suggest that pH indeed contribute to structuring zooplankton distrib",
author = "Hansen, {Benni Winding} and Andersen, {Christian M B} and Hansen, {Per Juel} and Nielsen, {Torkel Gissel} and Bent Vismann and Peter Tiselius",
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In situ and experimental evidence for effects of elevated pH on protistan and metazoan grazers. / Hansen, Benni Winding; Andersen, Christian M B; Hansen, Per Juel; Nielsen, Torkel Gissel; Vismann, Bent; Tiselius, Peter.

I: Journal of Plankton Research, Bind 41, Nr. 3, 2019, s. 257-271.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - In situ and experimental evidence for effects of elevated pH on protistan and metazoan grazers

AU - Hansen, Benni Winding

AU - Andersen, Christian M B

AU - Hansen, Per Juel

AU - Nielsen, Torkel Gissel

AU - Vismann, Bent

AU - Tiselius, Peter

PY - 2019

Y1 - 2019

N2 - Plankton succession was studied in a hyper-eutrophic stratified estuary, Mariager Fjord, Denmark. Above the pycnocline (15 m) pH increased from 8.5 to 9.2 after 5 d of sunny weather due to high primary production. The protistan grazers were dominated by heterotrophic dinoflagellates and mixotrophic and heterotrophic ciliates. Metazooplankton was dominated by meroplankton, rotifers, and the copepod, Acartia tonsa, all with a relatively low biomass. Cirriped nauplii occupied the upper strata while polychaete larvae the whole water column. Bivalve larvae occurred occasionally above the pycnocline even at very high pH. In exposure experiments the mixotrophic ciliate Mesodinium rubrum was the least pH tolerant species, followed by Strombidium spp., which did not cope well with seawater pH >8.5. Some heterotrophic dinoflagellates were more tolerant with net growth at pH >9. The predominant rotifer Synchaeta sp. tolerated up to pH 9.5 and the copepod survived pH 10 but stopped producing eggs at pH 9.5 with unaffected egg hatching success. The polychaeta and cirripedia larvae tolerated pH 9.5, but bivalvia larvae showed decreased survival already at pH 8.5. Based on in situ distribution patterns and pH exposure experiments we suggest that pH indeed contribute to structuring zooplankton distrib

AB - Plankton succession was studied in a hyper-eutrophic stratified estuary, Mariager Fjord, Denmark. Above the pycnocline (15 m) pH increased from 8.5 to 9.2 after 5 d of sunny weather due to high primary production. The protistan grazers were dominated by heterotrophic dinoflagellates and mixotrophic and heterotrophic ciliates. Metazooplankton was dominated by meroplankton, rotifers, and the copepod, Acartia tonsa, all with a relatively low biomass. Cirriped nauplii occupied the upper strata while polychaete larvae the whole water column. Bivalve larvae occurred occasionally above the pycnocline even at very high pH. In exposure experiments the mixotrophic ciliate Mesodinium rubrum was the least pH tolerant species, followed by Strombidium spp., which did not cope well with seawater pH >8.5. Some heterotrophic dinoflagellates were more tolerant with net growth at pH >9. The predominant rotifer Synchaeta sp. tolerated up to pH 9.5 and the copepod survived pH 10 but stopped producing eggs at pH 9.5 with unaffected egg hatching success. The polychaeta and cirripedia larvae tolerated pH 9.5, but bivalvia larvae showed decreased survival already at pH 8.5. Based on in situ distribution patterns and pH exposure experiments we suggest that pH indeed contribute to structuring zooplankton distrib

U2 - 10.1093/plankt/fbz020

DO - 10.1093/plankt/fbz020

M3 - Journal article

VL - 41

SP - 257

EP - 271

JO - Journal of Plankton Research

JF - Journal of Plankton Research

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