SOIL SEED BANK IN PANTANAL RIPARIAN FOREST: PERSISTENCE, ABUNDANCE, FUNCTIONAL DIVERSITY AND COMPOSITION

The present study was conducted to determine the densities and soil seed bank composition of a riparian forest and its adjacent upland vegetation for a better understanding the potentials of the soil seed banks in facilitating succession towards a more natural forest of native tree species. Three contiguous 20 m x 20 m plots were systematically established on both riparian forest and upland vegetation. Species enumeration, identification and distribution into families of the standing vegetation were carried out. Furthermore, five replicates soil samples were collected at two different depths (0-15 cm, 15-30 .The seedling emergence test was carried out for six months in the greenhouse to determine the species composition and the density of the seed in both vegetation types. The results of the seedling emergence revealed that more seeds were deposited at the upper depth (0-15 cm) than the lower depth 15-30 cm in the two vegetation types in both dry and rainy season. There was low similarity in species composition between the standing vegetation and soil seed bank in each of the two vegetation types. Herbaceous species recorded the highest number of seedlings as compared to the other habit. The low similarity between seed bank and standing vegetation of the riparian forest and the adjacent upland vegetation suggested that soil seed bank was insignificant in their restoration.

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Differences between species in seed bank and vegetation helps to hold functional diversity in a floodable Neotropical savanna

Journal of Plant Ecology ◽

10.1093/jpe/rtab014 ◽

2021 ◽

Author(s):

Evaldo B de Souza ◽

Francielli Bao ◽

Geraldo A Damasceno Júnior ◽

Arnildo Pott

Keyword(s):

Functional Diversity ◽

Seed Bank ◽

Plant Traits ◽

Soil Seed Bank ◽

Seedling Emergence ◽

Ground Cover ◽

Environmental Filters ◽

Functional Richness ◽

Seedling Emergence Method ◽

Pantanal Wetland

Abstract Aims Our objective was to quantify the contributions of the seed bank and the established vegetation to the species composition, functional composition and diversity, and discuss the implications of these differences in regeneration and persistence of floodplain plant communities. Methods We sampled all ground cover vegetation up to 1.5 m height and seed bank in 25 plots (10 m × 1 m) distributed across five sites in dry and rainy seasons in a periodically flooded savanna in the Pantanal wetland, Brazil. We evaluated the soil seed bank by seedling emergence method. Important Findings The seed bank species had traits that conferred regeneration to the communities, while persistence traits characterized the vegetation. The seed bank had higher functional richness and lower functional evenness than the vegetation. The existence of different plant traits between seed bank and vegetation allowed the coexistence of species with functionally contrasting persistence and regeneration traits, which may help maintain functional diversity. It may allow the community to be more resilient when dealing with different environmental filters such as drought, fire and flood.

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Soil Seed Bank Dynamics of a Riparian Forest and its Adjacent Upland Vegetation

Notulae Scientia Biologicae ◽

10.15835/nsb.8.1.9761 ◽

2016 ◽

Vol 8 (1) ◽

Author(s):

Omowumi Omotoyosi OLALOYE ◽

Samson Olajide OKE

Keyword(s):

Seed Bank ◽

Riparian Forest ◽

Soil Seed Bank ◽

Seed Bank Dynamics

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BANCO DE SEMENTES DO SOLO, COMO SUBSÍDIO À RECOMPOSIÇÃO DE MATA CILIAR

FLORESTA ◽

10.5380/rf.v40i4.20324 ◽

2010 ◽

Vol 40 (4) ◽

Cited By ~ 5

Author(s):

Israel Marinho Pereira ◽

Auwdréia Pereira Alvarenga ◽

Soraya Alvarenga Botelho

Keyword(s):

Seed Bank ◽

Riparian Forest ◽

Soil Seed Bank ◽

Floristic Composition ◽

Soil Samples ◽

Human Intervention ◽

Artificial Regeneration ◽

River Catchment

O presente trabalho teve como objetivo conhecer a densidade e composição do banco de sementes do solo em dois ambientes de mata ciliar alterada, no entorno de uma nascente. A nascente estudada pertence à bacia hidrográfica do rio Capivari, no município de Itumirim, MG (21º16’ S e 44º52’ W). Nos dois ambientes estudados, foram coletadas 18 amostras de solo a 5,0 cm profundidade, no final da estação chuvosa (maio de 2003). Calculou-se a densidade de sementes e a curva de germinação do banco pelo método de emergência de plântulas. Também foi feita a determinação da composição florística, com base principalmente na morfologia das plântulas. Após um período de 210 dias de avaliação, obteve-se uma densidade de 2.332 sementes/m2 no Ambiente I e 1.896 sementes/m2 no Ambiente II. No entanto constatou-se que o banco de sementes dos dois ambientes avaliados era composto apenas por espécies ruderais. Tais resultados evidenciam a necessidade de intervenção humana no processo de recomposição da vegetação ciliar no entorno dessa nascente, por meio da regeneração artificial de espécies arbóreas.Palavras-chave: Banco de sementes do solo; nascente e recomposição da vegetação. AbstractSoilseed bankastogrant recovery of the riparian forest. The present work objective knows the density and composition of soil seed bank in ciliary areas altered in spill of two springs. The studied springs belong to Capivari river catchment, Itumirim, MG (21º16'S and 44º52 ' W). The samples of soils were collected in the end of the rainy station (May of 2003). Were 18 soil samples were collected for the two environments to the depth of 5 cm. was calculated the density of seeds and the curve of germination of the soil seed bank, for method of seedling emergency. It was also made the determination of the floristic composition based mainly on the morphology of the seedling. After a period of 210 days of evaluation obtained a density of 2332 seed/m2 was observed in the environment I and 1896 seed/m2, for the environment. However, it was verified that the bank of seeds of the two appraised East was just composed of ruderal species. Such results evidence the need of human intervention in the process of restoration of the ciliary vegetation in spill of this spring, through the artificial regeneration of the arboreal species.Keyword: Seed bank; spring and restoration of the vegetation.

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Flood and fire affect the soil seed bank of riparian forest in the Pantanal wetland

Rodriguésia ◽

10.1590/2175-7860202071013 ◽

2020 ◽

Vol 71 ◽

Author(s):

Thiago da Costa Kohagura ◽

Evaldo Benedito de Souza ◽

Francielli Bao ◽

Fernando Alves Ferreira ◽

Arnildo Pott

Keyword(s):

Seed Bank ◽

Satellite Images ◽

Riparian Forest ◽

Soil Seed Bank ◽

Seedling Emergence ◽

Survival Strategies ◽

Paraguay River ◽

Prolonged Drought ◽

Abundance And Diversity ◽

Pantanal Wetland

Abstract Flood and fire can harm plants but they can have survival strategies, such as the seed bank. We aimed to determine the influence of fire and flood on the richness, abundance and diversity of the seed bank. Sampling was carried out in October/2013, year of prolonged drought, and October/2014, year of a heavy flood, in ten areas along the Paraguay River. The areas were selected in satellite images, five with old burn (2010, three years before sampling) and five with recent burn (2013, three months before sampling). In each area, we marked a 20 m long transect with ten 20 × 20 cm quadrats where we collected 5 cm deep topsoil samples, five with and five without litter. Seed bank richness and abundance were determined by seedling emergence. Old burn areas presented greater abundance than recent burn. The drier year presented greater abundance, richness and diversity than flood year. Removal of litter reduced the richness only in the wetter year. There was no difference in richness in the drier year. The removal of the litter did not affect the abundance and diversity. Interaction between fire and flood did not affect richness, abundance and diversity of the seed bank.

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