Unidades fitofisionômicas em mesoescala no Pantanal Norte e suas relações com a geomorfologia

Fantin-Cruz, Ibraim; Girard, Pierre; Zeilhofer, Peter; Collischonn, Walter; Cunha, Cátia Nunes da

doi:10.1590/s1676-06032010000200002

Cited by 23 publications

(17 citation statements)

References 16 publications

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“…In reports by these authors, the variation in topographic gradients was large, contrary to what is found in the Pantanal where slopes are of the order of 2 cm/km. In the study area, FANTIN-CRUZ et al (2010) concluded that elevation did not significantly influence the distribution of phytophysiognomic units, which are determined by flooding. This leads to the conclusion that richness, abundance and composition of the soil seed bank follows the same pattern as those observed in the distribution of phyto-physiognomic units, consistent with our results.…”

Section: Discussionmentioning

confidence: 83%

Distribution of Herbaceous Species in the Soil Seed Bank of a Flood Seasonality Area, Northern Pantanal, Brazil

Pagotto

Silveira

Cunha

et al. 2011

International Review of Hydrobiology

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To identify factors affecting the spatial distribution of soil seed banks of herbaceous species in the Pantanal floodplain, Brazil, the aims of this study were: to characterize the seed bank in terms of the abundance, richness and composition of germinated seeds; to relate these characteristics to flood duration, elevation, chemical and physical properties of the soil and to examine the seed bank's spatial pattern. Soil samples were collected at 14 points and were then placed in a greenhouse to allow germination to occur. Each sample point had the flood level monitored, the elevation measured and the soil properties identified. A total of 1710 seedlings from 26 species were recorded, of which Echinodorus tenelus was the most abundant (24.9%). Cyperaceae and Poaceae were the richest floristic families (5 species each), with Alismataceae the most represented in terms of number of individuals (36% of the total). Duration of flooding plays an important role in determining Pantanal soil seed banks. The flood pulse influences the abundance (r = 0.79; P = 0.006; partial), richness (r = 0.61; P = 0.02; partial) and composition of the soil seed bank (Pillai trace = 0.552; P = 0.027), carrying the seeds to areas where the duration of flood is longer. Except for aluminium, the soil characteristics expressed by the first principal component of PCA exert indirect positive effects on the seed bank. This is because this component was correlated with the duration of inundation (r = 0.76). Elevation and the toxic effect of aluminium do not vary sufficiently to be able to influence seed bank characteristics. The correlograms show that soil seed banks have no discernible spatial pattern, even though most species are dispersed hydrochorically. This suggests that, at the scale of the study, the tendency for flooding to cause homogeneous dispersion has no influence on seed-bank spatial structure, because of the complexity of flood-plain geomorphology.

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Section: Discussionmentioning

confidence: 83%

Distribution of Herbaceous Species in the Soil Seed Bank of a Flood Seasonality Area, Northern Pantanal, Brazil

Pagotto

Silveira

Cunha

et al. 2011

International Review of Hydrobiology

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“…For interpretation purposes, pond water-depth was used as indicative of the hydroperiod. Indeed, another study in the region (Fantin-Cruz et al, 2010) showed that these two factors are closely related (r 2 =0.85). The area of each pond was estimated on the basis of its GPS (Garmin 76) coordinates.…”

Section: Data Collection and Analysismentioning

confidence: 95%

“…The flood has a mixed origin, being a combination of local rainfall and water overflow from Cuiabá river and its surroundings, whose flood regime is characterised by its low intensity (mean height of flood: 24 cm) and long duration (mean: 85 days). The study area has a flat topography, varying from 112.52 to 116.56 m, and has 4 phytophysiognomic units, the largest of which is the floodplain (Fantin-Cruz et al, 2010).…”

Section: Study Areamentioning

confidence: 99%

“…Thus, closer assemblages should be more similar to one another than more distant ones (Gaston and Chown, 2005). In northern Pantanal, a broad range of habitats is found in vegetation types within a distance of few tens of metres (Signor et al, 2010), influenced by flood dynamics (Fantin-Cruz et al, 2010). Still, the temporary water bodies or seasonally flooded plains in this region, especially those near the floodplain of Cuiabá river, have been receiving attention only recently.…”

Section: Introductionmentioning

confidence: 99%

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Spatial distribution of fish assemblages along environmental gradients in the temporary ponds of Northern Pantanal, Brazil

et al. 2013

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“…Assim, sua topografia e sazonalidade climática, aliadas ao vai e vem das águas, aperfeiçoam as linhagens florísticas e as espécies. Elas se tornam adaptadas a diferentes condições, o que resulta na fisionomia característica dos diversos pantanais (PRANCE & SCHALLER, 1982;FORMAN & GODRON, 1986;NEIFF, 1990NEIFF, , 2001CUNHA et al 2007;FANTIN--CRUZ et al, 2010).…”

Section: Produção De Serrapilheira No Pantanal Mato-grossenseunclassified

Produção De Serrapilheria Em Biomas No Estado De Mato Grosso

Valentini¹,

Sanches²,

Pinto³

et al. 2017

Múltiplos Olhares Sobre a Biodiversidade - Vol. V

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Unidades fitofisionômicas em mesoescala no Pantanal Norte e suas relações com a geomorfologia

Cited by 23 publications

References 16 publications

Distribution of Herbaceous Species in the Soil Seed Bank of a Flood Seasonality Area, Northern Pantanal, Brazil

Distribution of Herbaceous Species in the Soil Seed Bank of a Flood Seasonality Area, Northern Pantanal, Brazil

Spatial distribution of fish assemblages along environmental gradients in the temporary ponds of Northern Pantanal, Brazil

Produção De Serrapilheria Em Biomas No Estado De Mato Grosso

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