Reproductive Phenology of Macrophyte Community in Response to Wetland Flooding Cycle

Catian, Gisele; Scremin-Dias, Edna; Pott, Arnildo

doi:10.4257/oeco.2019.2304.11

Cited by 6 publications

(6 citation statements)

References 43 publications

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“…The substrate where species occur usually reflects water availability and is especially important for vegetation that is subjected to variations in flooding regimes (Nunes da Cunha and Junk, 2004;Catian et al, 2019). Water availability favors greater allocation of this resource to flowers, allowing growth in size (Teixido et al, 2016;Kuppler and Kotowska, 2021;Roddy et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Among‐species variation in flower size determines florivory in the largest tropical wetland

Ortiz,

Columbano,

de Melo

et al. 2023

American J of Botany

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Premise: Flower damage caused by florivores often has negative consequences for plant reproduction. However, the factors affecting plant-florivore interactions are still poorly understood, especially the role of abiotic factors and interspecific variation in florivory within ecosystems. Thus, the patterns of florivory levels and its consequences for plant communities need to be investigated further. Methods: We assessed the influence of abiotic factors related to climatic seasonality, of phylogenetic relationships among plants, and of functional attributes associated with attractiveness to pollinators on florivory incidence and intensity in the Pantanal, the world's largest tropical wetland. Between December 2020 and November 2021, the percentage of flowers attacked (incidence) and petal area removed (intensity) by florivores were examined in 51 species from 25 families, considering flowering season, the substrate where the plants occur, and flower attributes as potentially determining factors on florivory levels. Results: Phylogeny and environmental factors did not have a significant influence on florivory. The only determinant of interspecific variation in florivory incidence and intensity was flower size, where larger flowers experienced higher florivory levels regardless of season and substrate, while flower arrangement and color were not significant factors. Conclusions: Our study is one of the first to estimate the community-wide effects of biotic and abiotic factors on both the incidence and the intensity of florivory. The magnitude of this plant-florivore interaction may reduce reproductive success and entail selective pressures on plant attractiveness to pollinators. K E Y W O R D S aquatic plants, dry and rainy season, flower area removed, frequency of flowers attacked, Pantanal, terrestrial plants

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Section: Discussionmentioning

confidence: 99%

Among‐species variation in flower size determines florivory in the largest tropical wetland

Ortiz,

Columbano,

de Melo

et al. 2023

American J of Botany

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“…Gallou et al [ 35 ] reported diurnal temperature to be widely correlated with the size of vascular plants. Likewise, precipitation may be related to reproductive aspects of Nymphaeaceae, as it has been reported that there is a correlation between flowering and seasonal flooding cycles in aquatic plants [ 36 ]. Studies have also shown that different fish and snake species exhibit both divergent and convergent patterns of evolution in response to climate change [ 4 , 31 ].…”

Section: Discussionmentioning

confidence: 99%

Climatic niche evolution and niche conservatism of Nymphaea species in Africa, South America, and Australia

Nzei,

Martínez-Médez,

Mwanzia

et al. 2024

BMC Plant Biol

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Background Interest in the evolution of climatic niches, particularly in understanding the potential adaptive responses of species under climate change, has increased both theoretically and within macroecological studies. These studies have provided valuable insights into how climatic traits of species influence their niche evolution. In this study, we aim to investigate whether niche conservatism plays a role in the species diversification of Nymphaea, a group of aquatic plants with a cosmopolitan distribution that is facing severe habitat loss. We will use climatic models and phylogenetic data for 23 species to reconstruct Nymphaea’s niche evolution, measure niche overlap, and assess disparity through time while testing for evolutionary models. Results There was a lot of overlap in niches both within and between groups, especially for species that can be found in many places. The breadth and peaks of the niche profile varied depending on the bioclimatic variables, which suggested that the species evolved differently to cope with changes in climate. The analysis also showed that evolutionary changes happened across the phylogeny, with weak to moderate signals. The morphological disparity index (MDI) values indicated that there were disparities within subclades over time but not between or among them. Niche reconstruction and evolution analysis revealed both convergent and divergent evolution among various variables. For example, N. immutabilis, N. atrans, N. violancea, and N. nouchali evolved towards intermediate temperatures for bio2 and bio3 (isothermity) while moving towards extreme temperatures for bio8 and bio9 (wettest and driest average quarterly temperatures). Conclusion Our study will improve our understanding of how changes in climatic niches are potentially driving the evolution of Nymphaea. It has significant scientific implications for the limits, assemblages, evolution, and diversification of species. This information is crucial for the ongoing efforts of conservation and management, particularly considering the inevitable effects of climate change.

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“…(1) dry, from July to September, when there is a strong hydric deficit; (2) rising water, from October to December, when the precipitation period begins; (3) high water, from January to March, when flooding is at the highest level; and (4) receding water, from April to June, when the water level begins to decline [69,70].…”

Section: Study Areamentioning

confidence: 99%

Bird Community Traits in Recently Burned and Unburned Parts of the Northeastern Pantanal, Brazil: A Preliminary Approach

Schuchmann,

Burs,

de Deus

et al. 2024

Sustainability

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Although fire is a natural phenomenon in the dynamics of some biomes around the world, it can threaten the biodiversity of certain ecosystems. Climate change and the expansion of anthropogenic activities have drastically increased the occurrence of large-scale burnings worldwide. The 2020 fire events in the Pantanal marked a historically unprecedented record, burning an area of approximately 40,000 km2. However, how fires affect the local wildlife has yet to be evaluated. The aim of this study was to investigate the recovery of the avifauna in the Pantanal of Mato Grosso by comparing data selected from a previous study conducted between 2014 and 2016 with data collected in burned areas nine to twelve months after the fire. We compared diversity and community composition, investigated the influence of species trait foraging guild, foraging strata, and body mass on their response to fire, and complemented it with species’ individual responses. Bird richness and Shannon diversity were lower in burned areas, and the composition significantly varied between burned and unburned areas. The species’ response toward burned and unburned areas was significantly mediated by their traits, with smaller, piscivorous, omnivorous, ground and water, and midstory to canopy species being the most sensitive toward the environmental changes caused by the fire. Thirty-three species showed a negative response toward burned areas, but 46 species showed the opposite response, and 24 species were similarly abundant in unburned and burned areas. The present study is the first evaluation of the response of birds to the extreme fire events in the Pantanal and provides valuable insight into the recovery and resilience of local avifauna.

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Reproductive Phenology of Macrophyte Community in Response to Wetland Flooding Cycle

Cited by 6 publications

References 43 publications

Among‐species variation in flower size determines florivory in the largest tropical wetland

Among‐species variation in flower size determines florivory in the largest tropical wetland

Climatic niche evolution and niche conservatism of Nymphaea species in Africa, South America, and Australia

Bird Community Traits in Recently Burned and Unburned Parts of the Northeastern Pantanal, Brazil: A Preliminary Approach

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