Differences in prey availability across space and time lead to interaction rewiring and reshape a predator–prey metaweb

Ecology, Journal Year: 2022, Volume and Issue: 103(8)

Published: April 7, 2022

Space and time promote variation in network structure by affecting the likelihood of potential interactions. However, little is known about relative roles ecological biogeographical processes determining how species interactions vary across space time. Here we study spatiotemporal predator-prey interaction networks formed anurans arthropods test for effects prey availability patterns, information that often absent limits understanding determinants structure. We found dissimilarity between ecoregions seasons was high primarily driven rewiring.We also turnover positively related to geographical distance. Using a null model approach disentangle effect on spatial temporal variation, show differences were important among areas. Our reveals fluctuations abundance, alongside limited dispersal abilities their prey, may be responsible patterns emerged our metaweb. These findings contribute assembly rules maintain biotic metacommunities highlight importance these systems.

Language: Английский

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Plant-animal interactions

Published: June 9, 2022

Hosted by New Phytologist Advisor, Christelle Robert, University of Bern. Featuring - Rocío Escobar-Bravo, author [Leafminer attack accelerates the development soil-dwelling conspecific pupae via plant-mediated changes in belowground volatiles](https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.17966) Quint Rusman, [Flowers prepare thyselves: Leaf and root herbivores induce specific floral phytochemistry with consequences for plant interactions florivores](https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.17931) Camila Souza, [Plant-centred sampling estimates higher beta diversity than pollinator-based across habitats](https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.17334)

Language: Английский

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Pollen DNA metabarcoding reveals cryptic diversity and high spatial turnover in alpine plant–pollinator networks

Molecular Ecology, Journal Year: 2022, Volume and Issue: 32(23), P. 6377 - 6393

Published: Sept. 6, 2022

Alpine plant-pollinator communities play an important role in the functioning of alpine ecosystems, which are highly threatened by climate change. However, we still have a poor understanding how environmental factors and spatiotemporal variability shape these communities. Here, investigate what drives structure beta diversity metacommunity from Australian region using two approaches: pollen DNA metabarcoding (MB) observations. Individual pollinators often carry multiple plant species, therefore expected MB to reveal more diverse complex network structure. We used gene regions (ITS2 trnL) identify species present loads 154 insect pollinator specimens three habitats construct networks, compared them networks based on observations alone. interaction turnover across space for both types evaluated their differences phylogenetic diversity. found significant structural between networks; notably, were much less specialized but than observation with detecting many cryptic species. Both approaches revealed that pollination very generalized, estimated high spatial (0.79) rewiring (0.6) as well (0.68) driven habitat larger interactions detected MB. Overall, our findings show microclimatic heterogeneity fine-scale networks.

Language: Английский

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Phenology Is an Important Driver of Hawkmoth–Flower Interactions in a Megadiverse Mountain Area in Brazil

Journal of Applied Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

ABSTRACT Hawkmoths and flowers exhibit striking examples of morphological specialisation, yet how these interactions are structured by different processes within communities still need to be better understood. In this study, we investigated the between hawkmoths in megadiverse, open‐vegetation landscape Brazilian Campos Rupestres. Using a zoocentric approach based on pollen loads found hawkmoth bodies, assessed their at community‐level. Our results revealed modular network, with both flowering plants organised into modules containing species dissimilar phenologies. This temporal segregation suggests staggering pattern resource use across year. Hawkmoth proboscis length, however, did not show any regarding module composition. Furthermore, phenology predicted interaction frequencies than abundances network. Therefore, seems primary driver open vegetation seasonal ecosystem. study represents first attempt unravel organisation hawkmoth‐flower community level ancient megadiverse ecosystem, underscore importance phenology/seasonality as an important process determining long distance flying pollinators capable connecting isolated plant populations landscape.

Language: Английский

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One for all, all for one? Pollinator groups differ in diversity and specialization of interactions across urban green spaces

Landscape and Urban Planning, Journal Year: 2025, Volume and Issue: 259, P. 105361 - 105361

Published: April 6, 2025

Language: Английский

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Integrating nocturnal and diurnal interactions in a Neotropical pollination network

Journal of Ecology, Journal Year: 2022, Volume and Issue: 110(9), P. 2145 - 2155

Published: May 31, 2022

Abstract Plants establish pollination interactions with different groups of animals, including nocturnal ones that economically valuable and culturally important crops, as well wild plants conservation concern. Despite the considerable number studies addressing structure dynamic networks, have been relatively overlooked. Using a multilayer network approach considering diurnal interactions, we aimed to understand how at periods day are integrated contribute structural pattern. We also highlight networks may give more nuanced assessment species importance across layers. assembled an intensively studied Neotropical area by standardizing interaction data from 16 previous into presence/absence (binary) network. Then, used evaluate modularity plant species' roles in these temporal were classified or according onset floral opening pollinators their foraging period. The consisted 178 pollinator 158 species, 870 links. Among 135 while 23 nocturnal. was significantly modular, modules differed composition (e.g., hawk moths, bats, bees, hummingbirds), plants. show organized interconnected Nocturnal had higher values versatility multidegree than plants, due role connecting two Synthesis . Our study highlights integrating systems distinct components networks. illustrate value tapping existing information, particularly data, well‐studied biodiversity hotspot areas, gain better understanding communities structured. Finally, despite relative scarcity studies, showed which often make complementary use pollinators, be

Language: Английский

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Dissimilarity of species interaction networks: quantifying the effect of turnover and rewiring

Peer Community Journal, Journal Year: 2022, Volume and Issue: 2

Published: June 13, 2022

Despite having established its usefulness in the last ten years, decomposition of ecological networks components allowing to measure their β-diversity retains some methodological ambiguities. Notably, how quantify relative effect mechanisms tied interaction rewiring vs. species turnover has been interpreted differently by different authors. In this contribution, I present mathematical arguments and numerical experiments that should (i) establish as it is currently done indeed fit for purpose, (ii) provide guidelines interpret values rewiring.

Language: Английский

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Pollen analysis reveals the effects of uncovered interactions, pollen‐carrying structures, and pollinator sex on the structure of wild bee–plant networks

Insect Science, Journal Year: 2023, Volume and Issue: 31(3), P. 971 - 988

Published: Sept. 8, 2023

Abstract Pollination networks are increasingly used to model the complexity of interactions between pollinators and flowering plants in communities. Different methods exist sample these interactions, with direct observations plant–pollinator contacts field being by far most common. Although identification pollen carried allows uncovering increasing sizes, build pollen‐transport variable their effect on network structure remains unclear. To understand how interaction sampling influences networks, we analyzed found wild bees from eight communities across Mallorca Island investigated differences loads bee body parts (scopa vs. body) sexes. We then assessed differences, as well uncovered not detected field, influenced bee–plant networks. identified a higher quantity diversity scopa than rest female body, but did lead plant‐pollination (excluding pollen) bee‐feeding (including However, built data were richer plant species showed lower modularity specialization (H 2 '), nestedness visitation based observations. Female stronger compared those males, although richer. Accordingly, females more generalist (low d’) tended be central indicating key role structuring pollination comparison males. Our study highlights importance palynological increase resolution important ecological questions such sexes pollination.

Language: Английский

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High floral trait diversity of aquatic plants in the Pantanal reveals different pollination strategies

Aquatic Botany, Journal Year: 2024, Volume and Issue: 193, P. 103761 - 103761

Published: Feb. 21, 2024

Language: Английский

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Behavioural and morphological traits influence sex‐specific floral resource use by hummingbirds

Journal of Animal Ecology, Journal Year: 2022, Volume and Issue: 91(11), P. 2171 - 2180

Published: May 21, 2022

Research on resource partitioning in plant-pollinator mutualistic systems is mainly concentrated at the levels of species and communities, whereas differences between males females are typically ignored. Nevertheless, pollinators often show large sexual behaviour morphology, which may lead to sex-specific patterns use with potential differentially affect plant reproduction diversification. We investigated variation behavioural morphological traits sexes hummingbird as mechanisms underlying flower ecological communities. To do so, we compiled a dataset plant-hummingbird interactions based pollen loads for 31 from 13 localities across Americas, complemented by data territorial (territorial or non-territorial) (bill length, bill curvature, wing length body mass). assessed extent intersexual niche breadth overlap floral species. Then, tested whether associated dimorphism while accounting evolutionary relatedness among found striking sex. Females had broader were more dissimilar visited respect same species, resulting high level sexes. that both territoriality related Notably, was greater than non-territorial moreover, negatively curvature These results reveal importance sex likely be an important mechanism reduce competition hummingbirds. findings highlight need better understanding putative role shaping communities.La investigación sobre la partición de recursos en los sistemas mutualistas planta-polinizador se concentra principalmente niveles especies y comunidades, mientras que las diferencias entre machos hembras suelen ser ignoradas. Sin embargo, polinizadores mostrar grandes sexuales su comportamiento morfología, lo puede dar lugar patrones específicos uso para cada sexo con el potencial afectar forma diferencial reproducción diversificación plantas. Se estudió variación rasgos morfológicos sexos colibríes como posibles mecanismos explican florales comunidades ecológicas. Para ello, recopiló un conjunto datos interacciones planta-colibrí base cargas polen localidades Américas, además o no territorial) (longitud curvatura del pico, longitud ala masa corporal). evaluaron intersexuales amplitud solapamiento nicho distintas colibríes. Posteriormente, comprobó si están asociados dimorfismo colibríes, teniendo cuenta parentesco evolutivo especies. encontraron notables sexos. Las presentaron una mayor fueron más disímiles plantas visitadas respecto misma especie, resultó alto nivel encontró tanto territorialidad relacionados por En particular, fue territoriales y, además, asoció negativamente pico Estos resultados revelan importancia conductuales según es probablemente mecanismo importante reducir competencia ponen manifiesto necesidad comprender mejor rol tiene interacción

Language: Английский

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