Soil seed bank of floodable native and cultivated grassland in the Pantanal wetland: effects of flood gradient, season and species invasion

Bao, Francielli; Pott, Arnildo; Ferreira, Fernando Alves; Arruda, Rafael

doi:10.1007/s40415-014-0076-z

Cited by 37 publications

(74 citation statements)

References 17 publications

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“…Seed bank assays of wetland soils placed in flooded and freely drained conditions have provided useful information elsewhere (e.g., Middleton 2003), as well as in the few studies in the Pantanal (Bao et al 2014;Oliveira et al 2015). Our results are novel in that they indicate that flooding provides favorable conditions for an increase in species richness and abundance in seedling recruitment soon after water had receded.…”

Section: Effect Of Floodingmentioning

confidence: 68%

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Effects of flooding and its temporal variation on seedling recruitment from the soil seed bank of a Neotropical floodplain

2016

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Evaluation of the eff ects of fl ooding on seedling recruitment from seed banks helps in understanding vegetation regeneration in fl oodplains. We studied the eff ects of simulated fl ooding on richness and abundance of, and temporal variation in, seedling recruitment from the soil seed bank of a fl oodable savanna of the Pantanal wetland, under two conditions: 1) Post-fl ood = inundated for 30 days followed by irrigation; 2) Non-fl ooded = only irrigated. We recorded emerged seedlings biweekly for 120 days and found a total of 124 species for the two treatments, the most abundant species were annual herbs (e.g., Richardia grandifl ora and Euploca procumbens) and annual graminoids (e.g., Digitaria ciliaris and Cyperus haspan). Flooding positively infl uenced seedling richness and abundance, while seedling emergence from the non-fl ooded soil was slower, but continued during all periods. Th e diff erent temporal patterns between treatments showed that fl ooding increases the abundance of emerged seedlings and acts as a trigger for explosive recruitment shortly after water depletion.

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Section: Effect Of Floodingmentioning

confidence: 68%

“…Floods can favor annual and perennial herbs as well as graminoid species, the most common life forms in the seed bank of floodplains (Pagotto et al 2011;Bao et al 2014). Many of wetland species, generally annuals, produce persistent seed banks with a large number of seeds with high longevity (Middleton 2003).…”

Section: Introductionmentioning

confidence: 99%

Effects of flooding and its temporal variation on seedling recruitment from the soil seed bank of a Neotropical floodplain

2016

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“…Species richness and abundance increase due to different capabilities of seed retention (Bao et al 2014), and also by the physiological limitation of seeds by function of the submersal period (Brock 2011). Therefore, the difference in species composition of these environments may be explained by the Paraguay River flood pulse,…”

Section: Similarity and Distance Effectsmentioning

confidence: 99%

Plant species diversity in a Neotropical wetland: patterns of similarity, effects of distance, and altitude

Bao

Leandro

Rocha

et al. 2017

An. Acad. Bras. Ciênc.

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The Brazilian Pantanal is an extensive wetland with heterogeneous habitats, primarily due to the riverfloodplain system and plants with differential adaptations and reproductive strategies. Factors such as altitude, distance among plant formations, and flood pulse must be considered to better understand its diversity. Aiming to assess the influence of biogeographic patterns in this system, we analyzed the floristic composition of six areas along the Paraguay River, including residual relieves, verifying the pattern of similarity, and effects of distance and altitude. We recorded 356 species in 87 families, mostly perennial (75%), and some annuals (15%) and pluriannuals (5%). Herbaceous plants were the most represented (48%), followed by arboreal (23%), shrubby (15%) and epiphytic (14%) habits, only 12% being endemic to Brazil. The studied areas showed low floristic similarity, but higher resemblance of species between neighboring areas, and no relation with altitude. The upper Paraguay River is diverse, with high spatial variability of species, predominantly perennial. The river-floodplain connectivity may be a determinant factor in species richness and occurrence of endemic species.

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“…Recent studies have shown that the soil seed bank is very flexible to seasonal fluctuations, composed by aquatic, mesic, and even dryland species (e.g., Portulaca) and that after 15 years under exotic creeping signal grass (Urochloa humidicola), the seed bank is still active to regenerate native species [20].…”

Section: Terrestrial Vegetationmentioning

confidence: 99%

Terrestrial and Aquatic Vegetation Diversity of the Pantanal Wetland

Pott

Silva

2015

The Handbook of Environmental Chemistry

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This chapter is a comprehensive summary and an illustrated report of our observations over 30 years of research on flora, vegetation, and geoprocessing based on intensive fieldwork throughout the Pantanal plain and highlands, associated to data compiled from the literature. There is a unique phytogeographic diversity in the Pantanal, a region of confluence of various biogeographic provinces, such as Cerrado, Amazon, Atlantic Forest, and Chaco, plus a wide distribution group and the exotic plants. The proportions of the flora are approximately 50% wide-ranging species, 30% Cerrado species, and 20% shared among other phytogeographic origins. Considering the 350 woody plants, the Cerrado group is the most numerous (66 species), followed by Cerrado and seasonal forest (47), wide distribution (31), Chaco (29), and seasonal forest (23). There is little endemism, probably due to the recent geological age of the Pantanal. So far, the Pantanal is yet the most conserved biome in Brazil. The vegetation is very resilient, flexible, and adapted to wet-and-dry seasonal and decadal cycles, including fire, and shall remain diverse as long as the hydrological balance is not disrupted by homogenization toward either an entirely dry or a fully wet system.

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Soil seed bank of floodable native and cultivated grassland in the Pantanal wetland: effects of flood gradient, season and species invasion

Cited by 37 publications

References 17 publications

Effects of flooding and its temporal variation on seedling recruitment from the soil seed bank of a Neotropical floodplain

Effects of flooding and its temporal variation on seedling recruitment from the soil seed bank of a Neotropical floodplain

Plant species diversity in a Neotropical wetland: patterns of similarity, effects of distance, and altitude

Terrestrial and Aquatic Vegetation Diversity of the Pantanal Wetland

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