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Variabilidad temporal de la producci...

Alfonso-Sosa, Edwin.

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Variabilidad temporal de la produccion primaria fitoplanctonica en la estacion CaTS (Caribbean Time-Series Station): Con enfasis en el impacto de la marea interna semidiurna sobre la produccion (Spanish text).

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Variabilidad temporal de la produccion primaria fitoplanctonica en la estacion CaTS (Caribbean Time-Series Station): Con enfasis en el impacto de la marea interna semidiurna sobre la produccion (Spanish text)./
Author:	Alfonso-Sosa, Edwin.
Description:	407 p.
Notes:	Adviser: Jorge E. Capella.
Contained By:	Dissertation Abstracts International63-02B.
Subject:	Biogeochemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3042382
ISBN:	0493559450

Variabilidad temporal de la produccion primaria fitoplanctonica en la estacion CaTS (Caribbean Time-Series Station): Con enfasis en el impacto de la marea interna semidiurna sobre la produccion (Spanish text).
Alfonso-Sosa, Edwin.

Variabilidad temporal de la produccion primaria fitoplanctonica en la estacion CaTS (Caribbean Time-Series Station): Con enfasis en el impacto de la marea interna semidiurna sobre la produccion (Spanish text). - 407 p.

Adviser: Jorge E. Capella.

Thesis (Ph.D.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2002.

From 1995 to 2000, daily integrated, water column phytoplankton primary production was estimated on a monthly basis at the CaTS (Caribbean Time-Series Station, 17°36'N, 67°00'W) using available algorithms that relate phytoplankton photosynthetic pigment biomass and available photosynthetic radiation (PAR). Average daily integrated primary production was between 132 and 750 mg C m<super>−2</super> d<super>−1</super>. Annual production was 149 g C m<super>−2</super> yr<super>−1</super> and showed maxima in April, July, October and November. SeaWiFS derived chlorophyll-a concentrations for the Northeastern Caribbean Sea followed the same pattern. Increases in primary production were associated to large P<super>B</super> s (or P<super>B</super>m), αB and <overline>a</overline>* ph values during maximum influence of Amazon and Orinoco River plume waters. High vertical diffusivity values, κ<italic>d</italic> > 6 × 10<super>−3</super> m<super>−2</super>s<super>−1</super>, were measured between SEP-DEC 1997 and MAY–OCT 2000 in oceanic waters of the Mona Passage. These elevated diffusivities are associated with the presence of locally generated internal waves of semidiurnal frequency, with a reduction of the Richardson number at the base of the pycnocline, and with increased coastal seiches activity over the southwest coast of Puerto Rico. The patterns of activity are strictly correlated with the lunar cycle and with changes in the stratification of the Caribbean Surface Water (CSW). Increases in the stratification of the water column are due to the influence of the Amazon and Orinoco Rivers. Under the proper astronomical forcing and vertical stratification conditions energy from the barotropic tide at or near the shelf break is transferred offshore towards the generation of internal tides and shoreward into the platform waters consequently increasing the coastal seiche activity. Internal tides of near-semidiurnal frequencies were observed in the euphotic zone. The development of K-H instabilities during the breaking of the internal tide can explain the formation of high diffusivity patches. Inside the patches (κ<italic>d</italic> > 0.004 m<super>2</super> s<super> −1</super>) increments in primary productivity of the order of 0.05 mg C m<super>−3</super> h<super>−1</super> were measured. The patches generated a NO3 flux equal to 1.058 × 10<super>−4 </super> mmol M<super>−2</super> s<super>−1</super> and can sustain a new production equal to 724 mg C m<super>−2</super> d<super>−1 </super> or 264 g C m<super>−2</super> yr<super>−1</super>.

ISBN: 0493559450Subjects--Topical Terms:

545717
Biogeochemistry.

Variabilidad temporal de la produccion primaria fitoplanctonica en la estacion CaTS (Caribbean Time-Series Station): Con enfasis en el impacto de la marea interna semidiurna sobre la produccion (Spanish text).
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100 1 $a Alfonso-Sosa, Edwin. $3 1251708
245 1 0 $a Variabilidad temporal de la produccion primaria fitoplanctonica en la estacion CaTS (Caribbean Time-Series Station): Con enfasis en el impacto de la marea interna semidiurna sobre la produccion (Spanish text).
300 $a 407 p.
500 $a Adviser: Jorge E. Capella.
500 $a Source: Dissertation Abstracts International, Volume: 63-02, Section: B, page: 0713.
502 $a Thesis (Ph.D.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2002.
520 $a From 1995 to 2000, daily integrated, water column phytoplankton primary production was estimated on a monthly basis at the CaTS (Caribbean Time-Series Station, 17°36'N, 67°00'W) using available algorithms that relate phytoplankton photosynthetic pigment biomass and available photosynthetic radiation (PAR). Average daily integrated primary production was between 132 and 750 mg C m<super>−2</super> d<super>−1</super>. Annual production was 149 g C m<super>−2</super> yr<super>−1</super> and showed maxima in April, July, October and November. SeaWiFS derived chlorophyll-a concentrations for the Northeastern Caribbean Sea followed the same pattern. Increases in primary production were associated to large P<super>B</super> s (or P<super>B</super>m), αB and <overline>a</overline>* ph values during maximum influence of Amazon and Orinoco River plume waters. High vertical diffusivity values, κ<italic>d</italic> > 6 × 10<super>−3</super> m<super>−2</super>s<super>−1</super>, were measured between SEP-DEC 1997 and MAY–OCT 2000 in oceanic waters of the Mona Passage. These elevated diffusivities are associated with the presence of locally generated internal waves of semidiurnal frequency, with a reduction of the Richardson number at the base of the pycnocline, and with increased coastal seiches activity over the southwest coast of Puerto Rico. The patterns of activity are strictly correlated with the lunar cycle and with changes in the stratification of the Caribbean Surface Water (CSW). Increases in the stratification of the water column are due to the influence of the Amazon and Orinoco Rivers. Under the proper astronomical forcing and vertical stratification conditions energy from the barotropic tide at or near the shelf break is transferred offshore towards the generation of internal tides and shoreward into the platform waters consequently increasing the coastal seiche activity. Internal tides of near-semidiurnal frequencies were observed in the euphotic zone. The development of K-H instabilities during the breaking of the internal tide can explain the formation of high diffusivity patches. Inside the patches (κ<italic>d</italic> > 0.004 m<super>2</super> s<super> −1</super>) increments in primary productivity of the order of 0.05 mg C m<super>−3</super> h<super>−1</super> were measured. The patches generated a NO3 flux equal to 1.058 × 10<super>−4 </super> mmol M<super>−2</super> s<super>−1</super> and can sustain a new production equal to 724 mg C m<super>−2</super> d<super>−1 </super> or 264 g C m<super>−2</super> yr<super>−1</super>.
590 $a School code: 0553.
650 4 $a Biogeochemistry. $3 545717
650 4 $a Biology, Oceanography. $3 783691
650 4 $a Physical Oceanography. $3 1019163
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710 2 0 $a University of Puerto Rico, Mayaguez (Puerto Rico). $3 1017811
773 0 $t Dissertation Abstracts International $g 63-02B.
790 $a 0553
790 1 0 $a Capella, Jorge E., $e advisor
791 $a Ph.D.
792 $a 2002
793 $a Spanish
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3042382