Protist diversity on a nature reserve in NW England – with particular reference to their role in soil biogenic silicon pools

Angela Creevy, Jane Fisher, Daniel Puppe, David M Wilkinson

Research output: Contribution to journalArticle

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Abstract

Soil protists play fundamental roles in many earth system processes, yet we are only beginning to understand the true diversity of the organisms involved. In this study we used conventional (microscopy-based) methods to characterise the diversity and estimate protist population sizes in soils from a variety of distinct habitats within Mere Sands Wood nature reserve in NW England. We produced population size data for over ninety soil protists belonging to two major eukaryotic functional groups: testate amoebae (TA) and diatoms, adding substantial ‘cryptic diversity’ to the nature reserves recorded biota. From these population size data we estimated relative contributions of TA and diatoms to soil biogenic silicon (BSi) pools and found significant correlations between taxon richness and the TA and diatom Si pool. This could indicate that protist functional diversity can influence terrestrial BSi pools, especially in early successional plant communities where TA and diatoms can potentially increase Si mineralisation and/or create Si ‘hot spots’ and hence, the biological availability of this element for subsequent plant uptake. TA were particularly abundant in mor humus type soils further supporting the idea that they could be important players in nutrient cycling in such soils. Overall, we demonstrate this is a useful approach in order to start to attempt to estimate the role of protists in the Si cycle and other ecological processes.
Original languageEnglish
Pages (from-to)51-59
JournalPedobiologia
Volume59
Issue number1-2
Early online date4 Feb 2016
DOIs
Publication statusE-pub ahead of print - 4 Feb 2016

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protist
Amoeba
silicon
nature reserve
Bacillariophyceae
England
conservation areas
diatom
population size
soil
mor
organisms
functional diversity
nutrient cycling
humus
functional group
biogeochemical cycles
soil type
biota
microscopy

Cite this

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title = "Protist diversity on a nature reserve in NW England – with particular reference to their role in soil biogenic silicon pools",
abstract = "Soil protists play fundamental roles in many earth system processes, yet we are only beginning to understand the true diversity of the organisms involved. In this study we used conventional (microscopy-based) methods to characterise the diversity and estimate protist population sizes in soils from a variety of distinct habitats within Mere Sands Wood nature reserve in NW England. We produced population size data for over ninety soil protists belonging to two major eukaryotic functional groups: testate amoebae (TA) and diatoms, adding substantial ‘cryptic diversity’ to the nature reserves recorded biota. From these population size data we estimated relative contributions of TA and diatoms to soil biogenic silicon (BSi) pools and found significant correlations between taxon richness and the TA and diatom Si pool. This could indicate that protist functional diversity can influence terrestrial BSi pools, especially in early successional plant communities where TA and diatoms can potentially increase Si mineralisation and/or create Si ‘hot spots’ and hence, the biological availability of this element for subsequent plant uptake. TA were particularly abundant in mor humus type soils further supporting the idea that they could be important players in nutrient cycling in such soils. Overall, we demonstrate this is a useful approach in order to start to attempt to estimate the role of protists in the Si cycle and other ecological processes.",
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Protist diversity on a nature reserve in NW England – with particular reference to their role in soil biogenic silicon pools. / Creevy, Angela; Fisher, Jane; Puppe, Daniel; Wilkinson, David M.

In: Pedobiologia, Vol. 59, No. 1-2, 04.02.2016, p. 51-59.

Research output: Contribution to journalArticle

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