Native diversity contributes to composition heterogeneity of exotic floras

Ecosphere, Journal Year: 2023, Volume and Issue: 14(3)

Published: March 1, 2023

Abstract Variation in species composition among sites (beta diversity) is generally thought to be driven by environmental filtering and dispersal limitation, but the role of biotic interactions has not been sufficiently addressed. Specifically, early a local community may contribute subsequent beta diversity patterns. Exotic assemblages within native communities provide unique opportunity study interaction mechanisms. In this study, we conducted field survey plants over an approximately 1800‐km transect middle lower Yangtze River valley China how influence exotic diversity. The included 459 plots 51 plant with 40 103 co‐occurring species. We also investigated 11 factors involving climate conditions, soil properties, human activity regulate between plants. results showed that (Shannon–Wiener index) increased Environmental especially monthly minimum temperature, influenced indirectly through rather than directly. Our suggest warmer temperatures, led decrease heterogeneity flora. will help incorporate into framework mechanisms for assembly.

Language: Английский

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Temporal and spatial variation of floral resources of woody species in a vereda ecosystem: Uniformity and habitat complementarity

Flora, Journal Year: 2023, Volume and Issue: 310, P. 152425 - 152425

Published: Dec. 2, 2023

Language: Английский

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To rewire or not to rewire: To what extent rewiring to surviving partners can avoid extinction?

Journal of Animal Ecology, Journal Year: 2023, Volume and Issue: 92(9), P. 1676 - 1679

Published: Sept. 1, 2023

Abstract Research Highlight : Leimberger, K.G., Hadley, A.S., & Betts, M.G. (2023). Plant–hummingbird pollination networks exhibit minimal rewiring after experimental removal of a locally abundant plant species. Journal Animal Ecology , https://doi.org/10.1111/1365‐2656.13935 . In this paper, Hadley and Betts (2023) explore the effects removing species on plant–hummingbird networks. They experimentally prevented access hummingbirds to flowers Heliconia tortuosa assessed subsequent changes in interactions between plants hummingbirds. Their main hypothesis postulated that loss highly connected would lead interaction niche expansions by hummingbirds, decreasing individual, network specialization. However, they found overall structure plant‐hummingbird remains mostly unaltered, with limited The contributions study can be summarized as (i) it adds number manipulative studies capacity rewire their following partners, importantly, is first from tropics vertebrate pollinators, for which at appropriate scales intrinsically more challenging; (ii) innovates evaluating change specialization individual level, carried out through pollen sampling body highlights stability may have been overestimated previous studies, calling further field. At same time, also indicated even has an small effect structure. Thus, contributes timely findings regarding ecological communities respond extinctions.

Language: Английский

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The Effect of Polyploidy and Mating System on Floral Size and the Pollination Niche in Brassicaceae

International Journal of Plant Sciences, Journal Year: 2023, Volume and Issue: 185(1), P. 89 - 99

Published: Sept. 26, 2023

Premise of research. Polyploidy, a major evolutionary process in flowering plants, is expected to impact floral traits, which can have cascading effects on pollination interactions, but this may depend selfing propensity. In novel use herbarium specimens, we assessed the polyploidy and mating system traits niche 40 Brassicaceae species.Methodology. We combined data (self-compatible or self-incompatible) with inferred ploidy level (polyploid diploid) used phylogenetically controlled analyses investigate their influence (size shape) degree generalism based frequency richness heterospecific pollen morphospecies captured by stigmas.Pivotal results. Flower size (but not depended interaction between system. Self-incompatible polyploid species had larger flowers than self-incompatible diploids, there was no difference for self-compatible species. The breadth (degree generalism) affected rather strongly only. more stigmas higher per stigma species, regardless ploidy.Conclusions. Our results demonstrate that moderated morphological features associated response terms as proxy variable.

Language: Английский

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Plant‐mediated effects of fire and fragmentation drive plant–pollinator interaction β‐diversity in fire‐dependent pine savannas

Oikos, Journal Year: 2023, Volume and Issue: 2024(1)

Published: Oct. 17, 2023

Interaction β‐diversity is a measure essential for understanding and conserving species interactions ecosystem functioning. explains the variation in across spatial temporal gradients, resulting from turnover or interaction rewiring. Each component of has different ecological implications practical consequences. While due to related assembly processes fragmentation, rewiring can support high biodiversity confer resilience networks. However, it unclear whether both components respond same drivers. Here, we assessed drivers plant–pollinator its 24 sites 9 longleaf pine (LLP) savannas north central Florida. We evaluated effects flowering plant composition flower abundance, vegetation, fire regime, soil moisture, terrain characteristics, climate, context geographic location. used path analysis evaluate main components. then generalized linear mixed models assess patterns among within preserves. found that networks LLP are highly variable space time, mainly possibly response abiotic gradients dispersal boundaries. Flower abundance composition, location, seasonality, landscape were β‐diversity, highlighting role management habitat connectivity preserving

Language: Английский

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