CRERAN MICROPLANKTON IN 2012

Paul Tett

CRERAN MICROPLANKTON IN 2012

Paul Tett

SAMS UHI

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Résumé

This note describes results of sampling the microplankton (pelagic protists including algae and protozoa) in loch Creran during 2012 and compares
seasonal patterns of abundance with those in 1979-1981. There is no longer a
Spring Bloom of the diatom Skeletonema, and agellates and dinoflagellates are
more numerous. However, signicant change in biomass could not be demonstrated
either by statistical analysis of the seasonal graphs or using the Phytoplankton
Community Index (PCI). Methods used for microscopy and numerical analysis are discussed, including the problems caused by low cell counts. A small
improvement in the fitting of the PCI envelope is reported.

langue originale	English
Editeur	Scottish Association for Marine Science
Nombre de pages	34
état	Published - 1 juin 2013

Série de publications

Nom	SAMS Internal reports
Numéro	285

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285 Tett-creran microplanktonLicense: Unspecified

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AB - This note describes results of sampling the microplankton (pelagic protists including algae and protozoa) in loch Creran during 2012 and compares seasonal patterns of abundance with those in 1979-1981. There is no longer a Spring Bloom of the diatom Skeletonema, and agellates and dinoflagellates are more numerous. However, signicant change in biomass could not be demonstrated either by statistical analysis of the seasonal graphs or using the Phytoplankton Community Index (PCI). Methods used for microscopy and numerical analysis are discussed, including the problems caused by low cell counts. A small improvement in the fitting of the PCI envelope is reported.

CRERAN MICROPLANKTON IN 2012

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