Factors Driving Seed Bank Diversity in Wetlands of a Large River Floodplain

Schneider, Berenice; Zilli, Florencia Lucila; Facelli, Florencia; Campana, Mirta

doi:10.1007/s13157-020-01355-9

Cited by 9 publications

(3 citation statements)

References 61 publications

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“…The low incidence of predated seeds can be supported by plants, which would not influence the population demographic regulation (Harper 1977). Our study revealed that despite high predation, there was no negative demographic effect on C. trinitatis populations, as can be seen in the high abundance of viable soil seeds, especially due to the positive effect of the flood that acts as the main source of seed replenishment (Schneider et al 2020). The effects of predation when associated with abiotic factors alter the species abundance and diversity of different ecosystems and, affect the likelihood that seed predators will visit a given location (Casazza et al 2020).…”

Section: Seed Bank and Seed Predationmentioning

confidence: 63%

Abiotic drivers shape seed inputs and outputs in a tropical wetland on Croton trinitatis population

2022

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Background Predicting how natural and anthropogenic drivers shape different ecological indicators, such as plant populations along environmental gradients, can be a relevant tool for establishing management and conservation criteria of tropical wetlands. We aimed to assess the effects of seasonal flood disturbance, type of grasslands and topographical conditions on Croton trinitatis population distribution in a tropical wetland. Methods The study was carried out in a seasonally flooded grassland (Central-West Brazil). We conducted samplings of soil on the dry and flood hydrophases of the Pantanal. We took the samples in eight seasonal ponds, with 1 km interval between them. Transects were marked during the flood period, observing the water level, one in the lowest zone, in the middle of the pond = low (ca. 60 cm deep), one at the pond edge = mid (ca. 30 cm deep) and one in the higher zone, on the external part = high (ca. 1 cm deep). Results The results showed that the topography, seasonality, and types of grassland determine differences in the abundance patterns of adult plants and seedlings, and seed bank and seed predation. The abiotic factors can shape plant population-related ecological processes and patterns, with outputs (germination and predation) and inputs (local dispersion and from neighbouring areas) of proportional seeds for the population maintenance in this environment. Conclusion We emphasize the importance of these findings, to show that abiotic factors are not the only ones to be considered in ecological studies of distribution and structuring of populations in habitats with extreme seasonal events.

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Section: Seed Bank and Seed Predationmentioning

confidence: 63%

Abiotic drivers shape seed inputs and outputs in a tropical wetland on Croton trinitatis population

2022

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“…In the process, the burial depth of sediment plays a crucial role ( Limón and Peco, 2016 ; Egawa, 2017 ). Drought and flood frequency can interfere with the stable living environment of the seed bank, thus suppressing the abundance and multiplicity of the wetland seed bank, with terrestrial species having higher abundance in drought environments and aquatic and amphibian species having superior abundance in flooded environments ( Bao et al., 2018 ; Schneider et al., 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Diversity of soil seed bank and influencing factors in the nascent wetland of the Yellow River Delta

Zhu,

Fang,

Jia

et al. 2023

Front. Plant Sci.

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Soil seed bank is the growth and reproduction source of vegetation community, playing an important role in vegetation establishment, succession and renewal, biodiversity maintenance. This study has selected the nascent wetland in the Yellow River Delta (YRD) formed in 1996 as study area and investigated the diversity and key influencing factors of soil seed bank diversity. The study results show that: (1) The soil seed bank in the study area has a simple structure, containing relatively few species. A total of five plant species, which belong to four families and five genera, were found in this bank, with Phragmites australis and Suaeda salsa being the dominant plants. (2) All species are herbs without woody species. One herb is annual herb and the others are perennial herbs. (3) From the sea to the river, the changes rules of the overall density and diversity of the seed bank are not obvious. (4) The dispersal distance from salt and freshwater has a significant influence on the density of the soil seed bank but has no significant influence on the diversity. Meanwhile, the soil salt content has a significant negative influence on the diversity of seed banks. (5) Aboveground vegetation did not closely relationship with diversity of soil seed bank. All above results can provide basic data and scientific evidence for the conservation of vegetation communities in the nascent wetlands and vegetation restoration in the degraded wetlands in the YRD.

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“…Consequently, a low-elevation distributed macrophyte community may require a larger propagule bank to replace shoots after longer periods of submergence. Because seeds are mobile and can be transported over long distances by water, the seasonal patterns of soil seed banks in floodplain wetlands are diverse ( Schneider et al., 2020 ; Fryirs & Carthey, 2022 ). As buds are closely associated with parental plants, the seasonal patterns of bud banks along elevational gradients may reflect the adaptation of macrophytes to flooding disturbance ( Klimesova and Klimes, 2007 ; Chen et al., 2015b ).…”

Section: Introductionmentioning

confidence: 99%

Belowground seed and bud banks play complementary roles in the potential recruitment of dominant macrophyte communities in a Yangtze River-connected floodplain wetland

et al. 2022

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Both seed and bud banks play important roles in the recruitment and maintenance of macrophyte communities; however, few studies have investigated them simultaneously. We investigated the abundance, species composition, and seasonal patterns of seed and bud banks in two dominant macrophyte communities, Carex and Miscanthus, in the Dongting Lake wetlands. The seed densities of both communities were lower from November (after flooding) to March and increased dramatically before flooding (in May). The bud densities of the two dominant communities peaked in the coldest month of the year (January), decreased markedly in March, and were the lowest before flooding. The seed banks of the two macrophyte communities were mainly composed of annual species and a few perennial species, whereas the bud banks were composed of only dominant perennials. Furthermore, the perennial species present in bud banks did not occur in seed banks. Among the soil variables, the bud densities of both plant communities were negatively associated with soil bulk density, whereas the seed density of the Miscanthus community was positively associated with soil bulk density. Our results suggest that seed and bud banks are complementary in the potential recruitment of macrophyte communities; that is, bud banks regulate the demography of dominant perennials, and seed banks contribute to the recruitment and dispersal of annual species. Given the high abundance of annuals and near absence of the most dominant perennials in the seed bank, the bud banks of dominant perennial species should be more widely used in wetland restoration and management.

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Factors Driving Seed Bank Diversity in Wetlands of a Large River Floodplain

Cited by 9 publications

References 61 publications

Abiotic drivers shape seed inputs and outputs in a tropical wetland on Croton trinitatis population

Abiotic drivers shape seed inputs and outputs in a tropical wetland on Croton trinitatis population

Diversity of soil seed bank and influencing factors in the nascent wetland of the Yellow River Delta

Belowground seed and bud banks play complementary roles in the potential recruitment of dominant macrophyte communities in a Yangtze River-connected floodplain wetland

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