Adaptive response of extreme epiphyte Tillandsia species (Bromeliaceae) is demonstrated by different sexual reproduction strategies in the Brazilian Chaco

Gomes, A. C.; Ferreira, Bruno H. S.; Souza, Camila Silveira; Arakaki, Luan Marcell Mitsuo; Aoki, Camila; Paggi, Gecele Matos; Sigrist, Maria Rosângela

doi:10.1093/botlinnean/boz104

Cited by 9 publications

(4 citation statements)

References 60 publications

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“…In this way, floral longevity plays an important role in the reproductive ecology of plants influencing the number of pollinator visits (Ferreira et al, 2018; Primack, 1985). Hence, there are also known instances of diurnal opening flowers with extended flower longevity that interact with nocturnal pollinators (Cordero‐Schmidt et al, 2021; Diniz et al, 2022; Gomes et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Integrating nocturnal and diurnal interactions in a Neotropical pollination network

et al. 2022

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

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Section: Introductionmentioning

confidence: 99%

Integrating nocturnal and diurnal interactions in a Neotropical pollination network

et al. 2022

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“…These extreme epiphytic bromeliads, as mentioned by Gomes et al . (2019), are Tillandsia species distributed from the drier Chacoan domain (Winkler 1980; Gomes et al . 2019), extending eastwards to Rio Grande do Sul from the parklands of Argentina across the enclosed and moister deciduous seasonal forest of the upper Paraná‐Uruguay River basins (Rambo 1961; Winkler 1980).…”

Section: Discussionmentioning

confidence: 99%

“…(2019), are Tillandsia species distributed from the drier Chacoan domain (Winkler 1980; Gomes et al . 2019), extending eastwards to Rio Grande do Sul from the parklands of Argentina across the enclosed and moister deciduous seasonal forest of the upper Paraná‐Uruguay River basins (Rambo 1961; Winkler 1980). In our floristic survey, we recorded the following Tillandsia ‐xerophytic species: T. bandensis , T. duratii , T. loliacea , T. pohliana , T. streptocarpa and T. tricholepis .…”

Section: Discussionmentioning

confidence: 99%

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

2022

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Metacommunity ecology investigates how drivers of regional and local scales cause compositional variation in a network of communities potentially linked by dispersal. We examined the metacommunity structure of epiphytic bromeliad assemblages along a coastal-inland gradient in a subtropical geographic corridor extending from the Atlantic coast to near the Uruguay River, in the central depression of Rio Grande do Sul State, in southernmost Brazil. We surveyed floristic and environmental data on a sequence of 71 testimonial hills. We used elements of metacommunity structure to identify metacommunity patterns (i.e. random, checkerboard, nested, Clementsian, Gleasonian, evenly spaced and quasi-structured). We ran a canonical correspondence analysis to evaluate how coastal-inland gradient influenced species distribution. Finally, we employed variation partitioning to determine archetype-based metacommunity structuring processes (i.e. species sorting, neutral dynamics, patch dynamics and mass effects). We found that temperature-and moisture-based gradients generated environmental heterogeneity that established species filtering, determining the formation of cohesive groups of epiphytic bromeliads with coincidentally occurring boundaries (i.e. quasi-Clementsian structure). As a result, we identified four metacommunity structures embedded along the coastal-inland gradient: In the eastern and east-central metacommunities, species distributions were idiosyncratic due to individual species' responses to environmental gradients (i.e. quasi-Gleasonian structure), and in the western and west-central metacommunities, we observed Clementsian and Gleasonian structures, respectively. Habitat heterogeneity and dispersal sufficiency (i.e. species sorting archetype) were the foremost drivers establishing metacommunity structures. Ultimately, and surprisingly, in the east-central metacommunity, we detected source-sink dynamics among the testimonial hills (i.e. mass effects archetype). Our findings suggest that epiphytic bromeliad assemblages are linked to a gradient-driven pattern with moderate heterogeneity (i.e. low turnover) and identify four embedded metacommunity structures. Moreover, they indicate that the species sorting archetype best represents the processes of establishing metacommunity structures.

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“…Nearly 50 percent of bromeliad species are epiphytic; they have leaf trichomes of varied forms that function as moistureand nutrient absorptive appendages (Benzing 2000). Regarding their reproductive ecology, bromeliads have a wide range of pollinators, including bats, birds, and insects, which are the agents of pollen transfer in self-and outcrossing species; there are also autogamous taxa that do not need pollinator agents (Kessler & Krömer 2000;Canela & Sazima 2003, 2005Krömer & Kessler 2006;Krömer et al 2008;Kamke et al 2011;Schmid et al 2011aSchmid et al , 2011bMarques et al 2015;Missagia & Alves 2015;Aguilar-Rodríguez et al 2016;Godoy et al 2018;Gomes et al 2019). As reviewed by Zanella et al (2012), bromeliads have evolved floral displays with a great diversity of colors, shapes, and scents that are related to pollinator attraction, with nectar being the usual reward.…”

Section: Introductionmentioning

confidence: 99%

Pollination by hummingbirds of Vriesea gigantea (Bromeliaceae) populations in Southern Brazil

2021

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The pollination syndrome hypothesis usually does not successfully apply to the diversity of floral phenotypes or help predict the pollinators of most plant species. In Bromeliaceae, there is a wide range of floral visitors, making its species ideal to test for a correlation between nectar and floral traits with pollination syndrome. In this study, we analyzed the floral features, nectar production patterns, pollinators and floral visitors of Vriesea gigantea, and discussed its potential adaptive and ecological significance. We study three natural populations from the Atlantic Forest, Southern Brazil. The species presented protogyny and herkogamy, and its anthesis occurred at different periods among different populations. Vriesea gigantea has a relatively constant rate of nectar production during the day that continues overnight but at a reduced rate. Newly opened flowers already have around 80.0 μl of nectar. Although classified as chiropterophilous, based on flower morphology and pollinator observations, our results show that hummingbirds are effective pollinators in the studied populations of V. gigantea.

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Adaptive response of extreme epiphyte Tillandsia species (Bromeliaceae) is demonstrated by different sexual reproduction strategies in the Brazilian Chaco

Cited by 9 publications

References 60 publications

Integrating nocturnal and diurnal interactions in a Neotropical pollination network

Integrating nocturnal and diurnal interactions in a Neotropical pollination network

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

Pollination by hummingbirds of Vriesea gigantea (Bromeliaceae) populations in Southern Brazil

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