Land use, but not distance, drives fungal beta diversity

Marion, Zachary H.; Orwin, Kate H.; Wood, Jamie R.; Holdaway, Robert J.; Dickie, Ian A.

doi:10.1002/ecy.3487

Cited by 8 publications

(11 citation statements)

References 54 publications

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“…We found strong correlations of land use with plant communities, as would be expected for both planted and weed species. This correlation is very likely to explain previously reported significant effects of land use on plant pathogen and fungal communities and richness (Makiola et al ., 2019; Marion et al ., 2021). Moreover, it shows that the significant effect of land use was probably caused by the plant community, rather than, for example, changes in soil properties or disturbance regimes.…”

Section: Discussionmentioning

confidence: 99%

Environmental and plant community drivers of plant pathogen composition and richness

et al. 2021

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Interactions between individual plant pathogens and their environment have been described many times. However, the relative contribution of different environmental parameters as controls of pathogen communities remains largely unknown.Here we investigate the importance of environmental factors, including geomorphology, climate, land use, soil and plant community composition, for a broad range of aboveground and belowground fungal, oomycete and bacterial plant pathogens.We found that plant community composition is the main driver of the composition and richness of plant pathogens after taking into account all other tested parameters, especially those related to climate and soil.In the face of future changes in climate and land use, our results suggest that changes in plant pathogen community composition and richness will primarily be mediated through changes in plant communities, rather than the direct effects of climate or soils.

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Section: Discussionmentioning

confidence: 99%

Environmental and plant community drivers of plant pathogen composition and richness

et al. 2021

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“…to dominate soil fungal community assembly in many countries (Beck et al 2015;Chen et al 2018;Dumbrell et al 2010;Glassman et al 2017;Kranabetter et al 2015;Marion et al 2021;Taylor et al 2014), although stochastic processes have also been identified as important to varying degrees in some systems (Bahram et al 2013;Chen et al 2018;Dumbrell et al 2010;Glassman et al 2017).…”

Section: Community Assembly Processesmentioning

confidence: 99%

“…Many ectomycorrhizal taxa also show strong preference for certain host lineages, and variation in host traits can affect community composition (Tedersoo et al 2008;van der Linde et al 2018). Past research has focussed on northern hemisphere systems (although see Marion et al 2021;Nouhra et al 2013;Tedersoo et al 2008), and has been predominantly restricted to beta diversity analyses of pairwise turnover and so heavily influenced by rare species' patterns. To the best of our knowledge, zeta diversity analysis has not previously been applied to fungal communities, and so whether patterns influencing more widespread species differ to those influencing rare species is unknown.…”

Section: Introductionmentioning

confidence: 99%

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Different factors drive community assembly of rare and common ectomycorrhizal fungi

Galen¹,

Orlovich²,

Lord³

et al. 2022

Preprint

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Understanding what drives community assembly processes and how communities respond to environmental gradients are fundamental goals in community ecology. Ectomycorrhizal fungi support major forest systems across the globe, but the diversity, distribution and environmental controls affecting ectomycorrhizal community composition are unknown in many regions, particularly in the southern hemisphere. Here we investigate the assembly of ectomycorrhizal fungal communities based on eDNA samples from 81 Nothofagus forests across New Zealand's South Island. We apply zeta diversity analysis and multi-site generalised dissimilarity modelling (MS-GDM) to investigate assembly patterns and quantify the effects of 43 biotic and environmental variables on community turnover. The zeta diversity MS-GDM framework differentiates between the environmental factors driving turnover of rare and common species, so provides a more complete picture of community dynamics than traditional beta diversity analyses. Results showed that community assembly was dominated by deterministic rather than stochastic processes. Soil variables were important drivers across the full range of rare, intermediate and common species. Ground cover variables, forest patch size and rainfall had greater effects on turnover of rare species, whereas temperature variables and host tree size had greater effects on common species turnover. Applying these methods for the first time to fungi demonstrates that there are distinct differences in the ecological processes affecting different aspects of the ectomycorrhizal community, which has important implications for understanding the functional effects of community responses to environmental change.

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“…When q = 0, all species carry equal weight (corresponding to traditional "species richness"); at q = 1, the weighted geometric mean is used, and the diversity measure is a transformed version of Shannon's entropy; for q = 2, the weighted arithmetic mean of species is used, and abundant species have more influence on the diversity metric (Hill 1973;Jost 2007;Chao et al 2014). Calculating multiple diversity estimates using multiple Hill numbers (i.e., creating "diversity profile plots") allowed us to inspect the importance of dominant versus less abundant species in shaping diversity and turnover (Marion et al 2015b(Marion et al , 2021. For this analysis, we calculated pairwise turnover (scripts available on GitHub: https:// github.…”

Section: Analysis Of Community Diversitymentioning

confidence: 99%

Seasonal Dynamics of Faunal Diversity and Population Ecology in an Estuarine Seagrass Bed

Pullen

Gerber

Thomsen

et al. 2022

Estuaries and Coasts

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Biodiversity is important for communities to be resilient to a changing world, but patterns of diversity fluctuate naturally over time. Understanding these shifts — and the species driving community dynamics — is crucial for informing future ecological research and conservation management plans. We investigated the impacts of seasonality, small-scale changes in seagrass cover, and small-scale spatial location on the epifaunal communities occupying a temperate seagrass bed in the South Island of New Zealand. By sampling epifaunal communities using a fine-mesh push net two to three times per season for 1 year, and using a combination of multivariate and hierarchical diversity analyses, we discovered that season, seagrass cover, and the location within the bay, and their interactions, explained 88.5% of the variation in community composition. Community composition and abundances, but not numbers, of species changed over seasons. The most common taxa were commercially important Caridean shrimp and juvenile flounder (Rhombosolea spp.), and both decreased in abundance in summer (shrimp: 1.40/m2 in winter to 0.80/m2 in summer; flounder: 0.15/m2 in winter to 0.01/m2 in summer). Other commercially important species were captured as juveniles, including blue cod (Parapercis colias), kahawai (Arripis trutta), and whitebait (Galaxias spp.). The only adult fish captured in the study were two pipefish species (Stigmatopora nigra and Leptonotus elevatus), which had distinctly seasonal breeding patterns, with reproductively active adults most likely to be found in the spring and fall. Our study highlights the importance of estimating biodiversity parameters based on sampling throughout the year, as some species will be overlooked. We demonstrate that the temperate estuarine seagrass-affiliated animal communities differ in response to season and fine-scale local environments, causing fluctuations in biodiversity throughout the year.

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Land use, but not distance, drives fungal beta diversity

Cited by 8 publications

References 54 publications

Environmental and plant community drivers of plant pathogen composition and richness

Environmental and plant community drivers of plant pathogen composition and richness

Different factors drive community assembly of rare and common ectomycorrhizal fungi

Seasonal Dynamics of Faunal Diversity and Population Ecology in an Estuarine Seagrass Bed

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