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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, AL and Fisher, J and Puppe, D and Wilkinson, DM (2016) Protist diversity on a nature reserve in NW England − with particular reference to their role in soil biogenic silicon pools. Pedobiologia. ISSN 0031-4056

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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.

Item Type: Article
Uncontrolled Keywords: 0503 Soil Sciences, 0607 Plant Biology, 0703 Crop And Pasture Production
Subjects: Q Science > QH Natural history
Q Science > QH Natural history > QH301 Biology
Divisions: Natural Sciences and Psychology
Publisher: Elsevier
Date Deposited: 19 Feb 2016 09:28
Last Modified: 06 Sep 2017 15:19
DOI or Identification number: 10.1016/j.pedobi.2016.02.001
URI: http://researchonline.ljmu.ac.uk/id/eprint/2967

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