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Plankton-Benthos Coupling at Different Time Scales.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Plankton-Benthos Coupling at Different Time Scales./
作者:	Martinez, Maria Lorena Romero.
面頁冊數:	1 online resource (348 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-04, Section: B.
Contained By:	Dissertations Abstracts International84-04B.
標題:	Plankton. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29373890click for full text (PQDT)
ISBN:	9798352640036

Plankton-Benthos Coupling at Different Time Scales.
Martinez, Maria Lorena Romero.

Plankton-Benthos Coupling at Different Time Scales. - 1 online resource (348 pages)

Source: Dissertations Abstracts International, Volume: 84-04, Section: B.

Thesis (Ph.D.)--Open University (United Kingdom), 2022.

Includes bibliographical references

The intricate and complex connectivity between the benthic and planktonic habitats was studied by addressing two distinct compartments of the planktonic community and two levels (community and population) of biological organisation. The strategy of resting stage production in phyto- and zooplankton species, exemplifies one of the biological links coupling the two habitats. Therefore, the present is a written account of the occurrence, viability, and temporal genetic fingerprint of resting stages in marine diatoms, dinoflagellates and cladocerans. A unique set of tools were employed to target each research question and target group. The study of eukaryotic and protist communities was approached by using next generation sequencing of two barcode regions (V4 and V9) of the 18s rDNA. Diatom diversity and viability of resting stages was examined by High Throughput sequencing metabarcoding and by the revival of present day and past strains from dated sediment layers. The occurrence and abundance of resting eggs in marine cladocerans was investigated by sampling both the water column and the sediments, as well as depicting the demographic profiles of cladoceran populations. Main findings highlighted temporal changes in relative abundance of key eukaryotic and protists groups, temporal changes in community corresponded with changes to the environment due to industrial pollution. Viability of diatom resting stages was limited to ~ 67 years with only Chaetoceros species germinating from old layers. Species of planktonic with resting stages and benthic diatoms revealed clear temporal breaks. Interspecific patterns in occurrence and abundance of the different life stages in marine cladocerans populations resulted in contrasting contributions to the sedimentary egg bank. Penilia avirostris and Pleopis polyphemoides were the main contributors to the cladoceran egg bank.Overall, this thesis adds a unique contribution to the understanding of the benthicpelagic coupling terms in coastal marine habitats at short (annual) and long (~180 years) timescale.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798352640036Subjects--Topical Terms:

1299572
Plankton.
Index Terms--Genre/Form:

542853
Electronic books.

Plankton-Benthos Coupling at Different Time Scales.
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500 $a Source: Dissertations Abstracts International, Volume: 84-04, Section: B.
500 $a Advisor: Mazzocchi, Maria Grazia; Kremp, Anke; Montresor, Marina; D'Alelio, Domenico.
502 $a Thesis (Ph.D.)--Open University (United Kingdom), 2022.
504 $a Includes bibliographical references
520 $a The intricate and complex connectivity between the benthic and planktonic habitats was studied by addressing two distinct compartments of the planktonic community and two levels (community and population) of biological organisation. The strategy of resting stage production in phyto- and zooplankton species, exemplifies one of the biological links coupling the two habitats. Therefore, the present is a written account of the occurrence, viability, and temporal genetic fingerprint of resting stages in marine diatoms, dinoflagellates and cladocerans. A unique set of tools were employed to target each research question and target group. The study of eukaryotic and protist communities was approached by using next generation sequencing of two barcode regions (V4 and V9) of the 18s rDNA. Diatom diversity and viability of resting stages was examined by High Throughput sequencing metabarcoding and by the revival of present day and past strains from dated sediment layers. The occurrence and abundance of resting eggs in marine cladocerans was investigated by sampling both the water column and the sediments, as well as depicting the demographic profiles of cladoceran populations. Main findings highlighted temporal changes in relative abundance of key eukaryotic and protists groups, temporal changes in community corresponded with changes to the environment due to industrial pollution. Viability of diatom resting stages was limited to ~ 67 years with only Chaetoceros species germinating from old layers. Species of planktonic with resting stages and benthic diatoms revealed clear temporal breaks. Interspecific patterns in occurrence and abundance of the different life stages in marine cladocerans populations resulted in contrasting contributions to the sedimentary egg bank. Penilia avirostris and Pleopis polyphemoides were the main contributors to the cladoceran egg bank.Overall, this thesis adds a unique contribution to the understanding of the benthicpelagic coupling terms in coastal marine habitats at short (annual) and long (~180 years) timescale.
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538 $a Mode of access: World Wide Web
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650 4 $a Females. $3 1629802
650 4 $a Clustering. $3 3559215
650 4 $a Sedimentation & deposition. $3 3566241
650 4 $a Microorganisms. $3 666946
650 4 $a Males. $3 3562279
650 4 $a Salinity. $3 594109
650 4 $a Biological oceanography. $3 2122748
650 4 $a Microbiology. $3 536250
650 4 $a Sedimentary geology. $3 3173828
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