Oversimplified models underestimate the role of local environmental filtering

Journal of Vegetation Science, Journal Year: 2022, Volume and Issue: 33(6)

Published: Sept. 26, 2022

Abstract Aims Fitting community assembly via trait selection (CATS) models is a useful method of estimating the relative role environmental in assembly. In simplest version CATS models, only linear and additive trait–environment relationships are supposed. This paper explores consequences neglecting non‐linearity interactions by analyzing simulated field data. Location Northern Hungary, Central Europe. Methods Starting with Gaussian response curves, we discussed how more complex species–environment can be modeled regression. Using data, calculated bias unsatisfying linearity additivity assumptions introduce estimated filtering Field data collected forest understorey vegetation were used for illustrating magnitude underestimation real set. Results A non‐linear relationship appeared even simplest, but realistic simulation (i.e., curve). Neglecting both resulted considerable strength correlation. Moreover, this was stronger middle part gradients, leading to spurious pattern. Conclusion At least, second‐order polynomial regression model (including among traits) should fitted avoid filtering.

Language: Английский

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Focused on farmers: On the irreplaceable role of man and his animals in biodiversity conservation

Palaearctic Grasslands - Journal of the Eurasian Dry Grassland Group, Journal Year: 2021, Volume and Issue: 49, P. 13 - 21

Published: May 1, 2021

On the eve of new field season, we are pleased to present you Palaearctic Grasslands issue 49.After last elections EDGG Executive Committee (see p. 4), implemented some changes Grasslands.We now a team four Chief Editors with equal rights, but distributed roles.Most importantly, have abandoned former practice publishing an when enough material is ready; instead issues per year fixed deadlines.We also welcome members our Editorial Team.You can read all this and more on pages 6-7.Our aim strengthen as peerreviewed scientific journal underlined by two articles in issue, one which introduces category "Methods Grassland Ecology".It no coincidence that article published May many us planning research, so its methodological recommendations sug-gestions could be applied already during current season.Unfortunately, Covid-19 pandemic continues, imposes own adjustments activities.Therefore, provide updated information events planned for year, while at same time hope plans will come true.We despite preparations fieldwork find inspiration from contents.We wish enjoyable reading productive eventful summer months.

Language: Английский

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Temporal changes in spatial scale and autocorrelation structure of forest openings based on taxonomic, phylogenetic, and functional turnover

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: May 31, 2023

Context During European settlement, Illinois grasslands were converted for agricultural purposes. Remaining natural areas in southern include xeric forest openings, with communities representative of remnant and adjacent hardwood forests. Previous research these openings shows plant are driven by edaphic conditions.Objectives The first objective aimed to characterize spatial scale autocorrelation structure based on climatic, environmental, diversity variables. second was predict taxonomic, phylogenetic, functional turnover between 1988 2019, using climatic environmental variables.Methods Surveys conducted calculate taxonomic phylogenetic trait analyses used diversity. Spatially-explicit variables included from earlier surveys data repositories. Global Moran’s I autocorrelograms assess generalized dissimilarity modeling variables.Results Soil depth as the only variable which exhibited significant global autocorrelation. Climate metrics during surveys. Generalized models showed that geographic distance most influential driver across surveys.Conclusions glacial events explained soil sites, due Quaternary loess deposition sites. High values clustered southeastern portions study area. Functional best predicted compared models.

Language: Английский

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Efecto de diferentes sistemas de manejo de malas hierbas sobre la composición, diversidad y estructura funcional de las comunidades arvenses en viñedos mediterráneos

Published: Feb. 13, 2023

Citation García Guerra, José (2023). Efecto de diferentes sistemas manejo malas hierbas sobre la composición, diversidad y estructura funcional las comunidades arvenses en viñedos mediterráneos. Thesis (Doctoral), E.T.S. Ingeniería Agronómica, Alimentaria Biosistemas (UPM). https://doi.org/10.20868/UPM.thesis.73165.

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Insights in Functional Plant Ecology 2022

Frontiers research topics, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

Weed management involving tillage and/or herbicides has generally led to a decline of plant diversity in agroecosystems, with negative impacts on ecosystem services provision.The use covers become the predominant alternative vineyard management, numerous studies focusing analyzing advantages and disadvantages compared aforementioned management.Although weed taxonomic have been widely studied, many gaps remain their effects functional diversity.As is linked delivery key understanding these could enable development more sustainable practices.From 2008 2018, long-term trial was carried out Mediterranean assess different agricultural practices.In this article, we examined how as well irrigation use, affect diversity.Based 10 traits, such height, specific leaf area or seed mass, measured indices used null models detect processes trait convergence divergence.Our results revealed that had significant effect diversity.Mown plots showed highest richness but were functionally convergent, since mowing strong filter most traits.Tillage also behaved some vegetative favored divergence certain reproductive traits.Herbicide-treated irrigated values by promoting competitive species divergent values.The community assembly shaped rows, leading those traits related resource acquisition mass.These suggest greater may be associated bias caused higher occurrence (e.g.Convolvulus arvensis, Sonchus asper) contrasting for traits.Therefore,

Language: Английский

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