Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology
A physical and bio-optical field survey of the Monterey Bay area was conducted during May -June 2008. The combined bio-optical and physical data may be summarized as a transition between two end-member states during the late spring to summer upwelling season: (1) the mesotrophic, nanoflagellate-domi...
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ftdtic:ADA565260 2023-05-15T18:28:38+02:00 Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology Jolliff, J K Gould Jr, R W Penta, B Teague, W J DeRada, S Chavez, F P Arnone, R A NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV 2012-07-26 text/html http://www.dtic.mil/docs/citations/ADA565260 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA565260 en eng http://www.dtic.mil/docs/citations/ADA565260 Approved for public release; distribution is unlimited. DTIC Biochemistry Biology Physical and Dynamic Oceanography *CHLOROPHYLLS *FLUORESCENCE *OCEAN CURRENTS *PHYTOPLANKTON *WATER MASSES BAYS CALIFORNIA CONTINENTAL SHELVES DARKNESS DIATOMS FIELD CONDITIONS HIGH RESOLUTION HISTORY IN VIVO ANALYSIS OPTICAL DATA PATTERNS PHYSICAL PROPERTIES PLATFORMS SURFACE WATERS *OCEAN OPTICS *PHOTOPHYSIOLOGY BIO-OPTICAL PROPERTIES IVF(IN VIVO FLUOROMETRY) MONTEREY BAY PE060243N WUONR73-6463-01-5 Text 2012 ftdtic 2016-02-24T08:36:44Z A physical and bio-optical field survey of the Monterey Bay area was conducted during May -June 2008. The combined bio-optical and physical data may be summarized as a transition between two end-member states during the late spring to summer upwelling season: (1) the mesotrophic, nanoflagellate-dominated, low-salinity surface waters (chlorophyll-a 0.5 -2 mg m (exp -3); S 33.4) of the California Current and (2) the eutrophic, diatomaceous, higher salinity surface waters (chlorophyll-a 2 mg m(exp -3); S 33.8) of Monterey Bay and adjacent continental shelf areas. High-resolution and collocated spectrophotometric, fluorometric and CTD data obtained from a towed platform indicated low-salinity subarctic-origin surface waters intruded into Monterey Bay on 4 June. The dark in vivo fluorometry (IVF) phytoplankton response normalized to particle absorption at 676 nm (the apparent fluorescence efficiency, AFE) was nearly fourfold larger in this water mass type compared to higher salinity surface waters more typical of Monterey Bay. The collocated fluorescence and optical data were then used to estimate in situ irradiance values and determine apparent light saturation intensities (l'(sub k)) based on the remarkably consistent AFE water column inflection points. I'(sub k) values retrieved from the low-salinity surface waters were approximately half those obtained over the continental shelf. An analysis of concomitant HPLC data, in addition to historical data for the region, suggest these observed fluorescence trends may be indicative of taxon-specific variation in photophysiology. Pub. in Journal of Geophysical Research, v117, p1-16, 2012. Text Subarctic Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Biochemistry Biology Physical and Dynamic Oceanography *CHLOROPHYLLS *FLUORESCENCE *OCEAN CURRENTS *PHYTOPLANKTON *WATER MASSES BAYS CALIFORNIA CONTINENTAL SHELVES DARKNESS DIATOMS FIELD CONDITIONS HIGH RESOLUTION HISTORY IN VIVO ANALYSIS OPTICAL DATA PATTERNS PHYSICAL PROPERTIES PLATFORMS SURFACE WATERS *OCEAN OPTICS *PHOTOPHYSIOLOGY BIO-OPTICAL PROPERTIES IVF(IN VIVO FLUOROMETRY) MONTEREY BAY PE060243N WUONR73-6463-01-5 |
spellingShingle |
Biochemistry Biology Physical and Dynamic Oceanography *CHLOROPHYLLS *FLUORESCENCE *OCEAN CURRENTS *PHYTOPLANKTON *WATER MASSES BAYS CALIFORNIA CONTINENTAL SHELVES DARKNESS DIATOMS FIELD CONDITIONS HIGH RESOLUTION HISTORY IN VIVO ANALYSIS OPTICAL DATA PATTERNS PHYSICAL PROPERTIES PLATFORMS SURFACE WATERS *OCEAN OPTICS *PHOTOPHYSIOLOGY BIO-OPTICAL PROPERTIES IVF(IN VIVO FLUOROMETRY) MONTEREY BAY PE060243N WUONR73-6463-01-5 Jolliff, J K Gould Jr, R W Penta, B Teague, W J DeRada, S Chavez, F P Arnone, R A Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology |
topic_facet |
Biochemistry Biology Physical and Dynamic Oceanography *CHLOROPHYLLS *FLUORESCENCE *OCEAN CURRENTS *PHYTOPLANKTON *WATER MASSES BAYS CALIFORNIA CONTINENTAL SHELVES DARKNESS DIATOMS FIELD CONDITIONS HIGH RESOLUTION HISTORY IN VIVO ANALYSIS OPTICAL DATA PATTERNS PHYSICAL PROPERTIES PLATFORMS SURFACE WATERS *OCEAN OPTICS *PHOTOPHYSIOLOGY BIO-OPTICAL PROPERTIES IVF(IN VIVO FLUOROMETRY) MONTEREY BAY PE060243N WUONR73-6463-01-5 |
description |
A physical and bio-optical field survey of the Monterey Bay area was conducted during May -June 2008. The combined bio-optical and physical data may be summarized as a transition between two end-member states during the late spring to summer upwelling season: (1) the mesotrophic, nanoflagellate-dominated, low-salinity surface waters (chlorophyll-a 0.5 -2 mg m (exp -3); S 33.4) of the California Current and (2) the eutrophic, diatomaceous, higher salinity surface waters (chlorophyll-a 2 mg m(exp -3); S 33.8) of Monterey Bay and adjacent continental shelf areas. High-resolution and collocated spectrophotometric, fluorometric and CTD data obtained from a towed platform indicated low-salinity subarctic-origin surface waters intruded into Monterey Bay on 4 June. The dark in vivo fluorometry (IVF) phytoplankton response normalized to particle absorption at 676 nm (the apparent fluorescence efficiency, AFE) was nearly fourfold larger in this water mass type compared to higher salinity surface waters more typical of Monterey Bay. The collocated fluorescence and optical data were then used to estimate in situ irradiance values and determine apparent light saturation intensities (l'(sub k)) based on the remarkably consistent AFE water column inflection points. I'(sub k) values retrieved from the low-salinity surface waters were approximately half those obtained over the continental shelf. An analysis of concomitant HPLC data, in addition to historical data for the region, suggest these observed fluorescence trends may be indicative of taxon-specific variation in photophysiology. Pub. in Journal of Geophysical Research, v117, p1-16, 2012. |
author2 |
NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV |
format |
Text |
author |
Jolliff, J K Gould Jr, R W Penta, B Teague, W J DeRada, S Chavez, F P Arnone, R A |
author_facet |
Jolliff, J K Gould Jr, R W Penta, B Teague, W J DeRada, S Chavez, F P Arnone, R A |
author_sort |
Jolliff, J K |
title |
Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology |
title_short |
Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology |
title_full |
Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology |
title_fullStr |
Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology |
title_full_unstemmed |
Water Mass Bio-optical Properties in the Monterey Bay Region: Fluorescence-based Inference of Shifts in Phytoplankton Photophysiology |
title_sort |
water mass bio-optical properties in the monterey bay region: fluorescence-based inference of shifts in phytoplankton photophysiology |
publishDate |
2012 |
url |
http://www.dtic.mil/docs/citations/ADA565260 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA565260 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA565260 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766211173585256448 |