Latitudinal trends in the structure, similarity and beta diversity of plant communities invaded by Alternanthera philoxeroides in heterogeneous habitats

Frontiers in Plant Science, Год журнала: 2022, Номер 13

Опубликована: Окт. 6, 2022

Variations in latitudinal gradients could lead to changes the performance and ecological effects of invasive plants thus may affect species composition, distribution interspecific substitution native plant communities. However, variations structure, similarity beta (β) diversity within invaded communities across heterogeneous habitats remain unclear. In this study, we conducted a two-year field survey along 21°N 37°N China, examine differential amphibious Alternanthera philoxeroides on terrestrial aquatic habitats. We compared differences invasion importance value (IV), distribution, community (Jaccard index Sorenson index) β (Bray-Curtis βsim between by A. philoxeroides, as well analyzed their trends. found that IV were all significantly higher than terrestrial, while habitat had values. The increased with increasing latitude, no significant trend. With component proportion cold- drought-tolerant increased, dominant accompanying gradually changed from hygrophytes floating emerged submerged plants. addition, lower values regions, opposite parameters these regions. Our study indicates bioresistance capacities are different; leads homogenization habitats, experience more severe These findings crucial for predicting dynamics under rapid global change.

Язык: Английский

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Species interactions and diversity: a unified framework using Hill numbers

Oikos, Год журнала: 2022, Номер 2023(3)

Опубликована: Дек. 14, 2022

Biodiversity describes the variety of organisms on planet earth. Ecologists have long hoped for a synthesis between analyses biodiversity and biotic interactions among species, such as predation, competition mutualism. However, it is often unclear how to connect details these with complex modern biodiversity. To resolve this gap, we propose unification models measurements diversity. We show that obscure about interactions. For example, identical changes in can arise from or Our approach indicates traditional community assembly miss key facets diversity change. Instead, suggest change should focus partitions, which measure mechanisms directly shape diversity, notably species level selection immigration, rather than

Язык: Английский

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Life forms affect beta-diversity patterns of larch forests in China

Plant Diversity, Год журнала: 2023, Номер 46(1), С. 49 - 58

Опубликована: Окт. 30, 2023

Beta-diversity reflects the spatial changes in community species composition which helps to understand how communities are assembled and biodiversity is formed maintained. Larch (

Язык: Английский

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Reconsidering the Price equation: Benchmarking the analytical power of additive partitioning in ecology

Ecological Modelling, Год журнала: 2024, Номер 491, С. 110695 - 110695

Опубликована: Март 21, 2024

Язык: Английский

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Partitioning the temporal changes in abundance-based beta diversity into loss and gain components

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2021, Номер unknown

Опубликована: Май 30, 2021

ABSTRACT Ecologists have long recognized that the losses and gains in local species abundances can either decrease or increase spatial beta diversity, phenomena often referred to as biotic homogenization differentiation, respectively. However, quantifying such dynamic impacts of on diversity has remained a methodological challenge. Here, we develop numerical method additively partition temporal changes into distinct components reflect abundances. Our is based Ružička Bray–Curtis indices normalized abundance-based Whittaker’s diversity. The these measures are partitioned represent differentiation driven by abundance at both community levels. Application Swedish fish dataset revealed decreases between 1990 2018. communities was explained gains, but not losses, across sites. Species-level partitioning further showed largely caused increased population sizes particular sites where it already present. results highlight our effectively identifies processes embedded regional biodiversity patterns. We believe explicit analyses should bring deeper insights dynamics

Язык: Английский

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Species interactions and diversity: a unified framework using Hill numbers

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2022, Номер unknown

Опубликована: Окт. 21, 2022

Abstract Biodiversity describes the variety of organisms on planet earth. Ecologists have long hoped for a synthesis between analyses biodiversity and biotic interactions among species, such as predation, competition, mutualism. However, it is often unclear how to connect details these with complex modern biodiversity. To resolve this gap, we propose unification models measurements diversity. We show that obscure about interactions. For example, identical changes in can arise from competition or Our approach indicates traditional community assembly miss key facets diversity change. Instead, suggest change should focus partitions, which measure mechanisms directly shape diversity, notably species level selection immigration, rather than Speculations paper proposes observations cannot be used distinguish different types generations ecologists been fascinated links (i.e. mutualism predation). Many us expect provide vital clues operate nature, but hard tell when are reliable. work integrates This highlights an observed compatible any type interaction mutualism, predation etc.). So same increase Shannon could indicate superior ability competitor success mutualists predator’s tendency harvest dominant prey species. so because measures designed concerned relative abundances not account absolute abundance changes. Observations unlikely yield insights per se itself obscures species’ abundances. Therefore, less influenced by species-level selection.

Язык: Английский

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Changes in woody species beta diversity in forest communities reveal conservation priorities in the southeastern Qinghai-Tibet Plateau

Global Ecology and Conservation, Год журнала: 2022, Номер 41, С. e02354 - e02354

Опубликована: Дек. 15, 2022

Studying spatiotemporal changes in beta diversity and its drivers yields meaningful information to promote nature conservation. In this study, we surveyed tree shrub species 107 historical plots the southeastern Qinghai-Tibet Plateau. Then, assessed effects of environmental factors plant functional structural traits on all woody species. Our results showed that was rather stable over past 40 years, stabilization played a key role. However, trees homogenized due decrease replacement, so protecting should be prioritized. The could predominantly explained by spatial distances samplings retained larger trees. contrast, change largely interpreted decreased precipitation, increased canopy height, coverage, leaf area, dry matter content. Shrub became more shade-tolerant drought-tolerant. Because replacement is major component declined limitation, suggest expand protected areas locations with complementary, than further lifting protection strength within existing areas, as an improvement conserving biodiversity important region.

Язык: Английский

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