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Ecology of the epiphytic microalgal ...

de Oliveira Jackson, Maria Gabriella.

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Ecology of the epiphytic microalgal community on Spartina alterniflora in North Inlet Estuary, South Carolina.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Ecology of the epiphytic microalgal community on Spartina alterniflora in North Inlet Estuary, South Carolina./
作者:	de Oliveira Jackson, Maria Gabriella.
面頁冊數:	290 p.
附註:	Major Professor: Richard G. Zingmark.
Contained By:	Dissertation Abstracts International65-12B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3157149
ISBN:	9780496895793

Ecology of the epiphytic microalgal community on Spartina alterniflora in North Inlet Estuary, South Carolina.
de Oliveira Jackson, Maria Gabriella.

Ecology of the epiphytic microalgal community on Spartina alterniflora in North Inlet Estuary, South Carolina. - 290 p.

Major Professor: Richard G. Zingmark.

Thesis (Ph.D.)--University of South Carolina, 2004.

Seasonal spatial and temporal distribution of epiphytes on different sections (bottom and middle) of distinct growth forms (tall, medium, and short) of dead and living stems of Spartina alterniflora were studied from February 2002 to May 2003 at low tide in North Inlet Estuary, SC. Results showed significant seasonal differences in epiphytic biomass (F value = 2.31, p = 0.005), with higher values on the bottom section of tall, dead plants in the spring (1.4 +/- 0.4 mug Chl a · cm -2) and fall (0.7 +/- 0.05 mug Chl a · cm-2) at LT. However the taxonomic composition of the epiphytic community remained similar throughout the year, with prasinophytes and diatoms being dominant. Higher epiphytic accumulation on these plants might be related to their persistent occurrence throughout the year and their location (along the creeks and therefore submersed for longer periods). Epiphytic production measurements took place between June 2002 and May 2003. Photosynthesis vs. irradiance curves showed that photoinhibition occurred throughout the year, suggesting that epiphytic community is adapted to shade environments, especially during the summer, when the Spartina canopy is densest. Mathematical models were developed using environmental parameters (e.g., light, water level) to which the epiphytic community was exposed in the salt marsh in order to provide a realistic approach of the primary production of this community. Results indicated that the epiphytic community was heterotrophic throughout the year (between -0.07 and 83.7 g C · (m2 of marsh)-1 · month -1 in the low marsh and -0.08 to -68 g C · (m2 of marsh)-1 · month -1 in the high marsh). The model stressed the importance of considering different environmental parameters to avoid an overestimation of production if maximum net production values (Pmax) are extrapolated to a monthly and annual basis (Pmax). Although it was not possible to estimate the contribution of the epiphytic microalgae due to the method used (oxygen method) to estimate production, it was reported that the epiphytic community living on Spartina stems reduced by 32% the total primary production in North Inlet, suggesting the presence of a mixotrophic or heterotropic community.

ISBN: 9780496895793Subjects--Topical Terms:

1017726
Biology, Ecology.

Ecology of the epiphytic microalgal community on Spartina alterniflora in North Inlet Estuary, South Carolina.
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