Effects of Flood Pulse Dynamics on Functional Diversity of Macrophyte Communities in the Pantanal Wetland

Catian, Gisele; Silva, Danilo Muniz da; Súarez, Yzél Rondon; Scremin-Dias, Edna

doi:10.1007/s13157-018-1050-5

Cited by 31 publications

(20 citation statements)

References 69 publications

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“…Analysing the flooding phases separately, we observe that the species invest differently in flowers and fruits, given the temporal appearance of the species in ponds, influencing the functionality of the community, as reported by Catian et al (2018). The duration of the aquatic and terrestrial phases for the herbaceous plants, such as amphibious, is of great importance, determining the composition of species and growth habits of the plants over the year (Junk & Piedade 1997).…”

Section: Phenology Of the Community Of Macrophytes Between Flooding Pmentioning

confidence: 68%

“…The phenological reaction in response to environmental stressing factors (Schat & Van Beckhoven 1991, Haugaasen & Peres 2005 is easily evidenced in wetlands under seasonal floods (Junk & Piedade 1997, Thomaz et al 2007. In the Pantanal, the water regime strongly influences the phenology of the vegetation (Grace 1989, Maia & Piedade 2000, Nunes-da-Cunha & Junk 2001, Bertazzoni & Damasceno-Júnior 2011, Fava et al 2011, Marestoni 2011, Catian et al 2017, Uriu et al 2017, organizing mainly the macrophyte community by function of seasonal flood (Prado et al 1994, Gratani 2014, Ortega et al 2015, Catian et al 2018.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the annuality of the flood cycle in the Pantanal, the community of macrophytes adjusted its development to the water level fluctuation (Pott et al 1989, Pott & Pott 1994, Rebellato & Nunesda-Cunha 2005, Catian et al 2018. Various studies (e.g., Junk & Piedade 1993, Piedade et al 1994, Penha et al 1999, Catian et al 2017, 2018 observed a synchronism between the phenology of aquatic macrophytes and depth variation, possibly due to the adaptations to the flood-and-dry cycles.…”

Section: Introductionmentioning

confidence: 99%

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Reproductive Phenology of Macrophyte Community in Response to Wetland Flooding Cycle

2019

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The phenology of macrophytes in response to environmental stressing factors is easily evidenced in wetlands under seasonal floods, such as the Pantanal. In these environments, the survival and establishment of seedlings of aquatic plants are restricted, limited to episodes with the presence of water, resulting in posterior sexual propagation for dispersal of seeds adapted to hydrochory, overcoming the dry period dormant in the sediment. We described the reproductive phenology of the macrophyte community in relation to the phases of flooding and between the species life forms. We sampled monthly the phenology of the macrophyte community of twenty ponds in the Pantanal, during two years, during the four phases of the flood pulse: 'drought', 'rising', 'flood' and 'receding'. The peak of flowering and fruiting in species of community occurred at the begin of rising, under the influence of the water depth variation on flowering. The species with different life forms develop flowers and fruits in the phases with water (flooded). Amphibious species present wider phenological amplitude, flowering also in the drought phase. There is a correlation between the species flowering in the community and the water depth in the ponds, not observed when considering the life forms of the species. There is a correlation between flowering of amphibious plants and temperature, and rainfall; and a correlation between flowering rooted floating plants and temperature. The macrophyte community presents phenology associated to seasonal alterations of the flooding cycle, such as the presence and depth of water, by means of the diversified life histories and life forms, determining the dynamics, resistance and resilience of this flora in the Pantanal.

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Section: Phenology Of the Community Of Macrophytes Between Flooding Pmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reproductive Phenology of Macrophyte Community in Response to Wetland Flooding Cycle

2019

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“…The effect of local environmental changes related to flood pulses within the Pantanal is reflected in the species composition of several taxonomic groups of various forms (Zeilhofer & Schessl 1999, Oliveira & Calheiros 2000, Alho & Silva 2012, Catian et al 2018, as well as in the genetic aspects of some species (Borba et al 2013). Highly dispersed species can compensate for these environmental differences and maintain interlocking populations (Faria et al 2008).…”

Section: Discussionmentioning

confidence: 99%

EFFECT OF THE PANTANAL’S FLOODING HISTORY IN MORPHOMETRIC ASPECTS OF THE SOLITARY PARASITOID Campsomeris dorsata (HYMENOPTERA: SCOLIIDAE)

Aranda

2019

Oecol. Aust.

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The shape of an organism and the variation between related groups lie at the core of understanding evolution and interactions between phenotypes, genotypes, and environmental spaces. Due to the relief conditions and hydrological profile of the region, the areas inside the Pantanal have different flood histories in respect to the flood duration and the amount of water retained in the plain. The objective of this work was to evaluate the effect of the environmental flooding gradient on the geometric morphometry variation of Campsomeris dorsata (Hymenoptera: Scoliidae) wings in Pantanal, to understand if the variations in spatial distribution related to the flooding history interferes in the morphology of the wings by identifying where, how, and to what magnitude such changes occur. The wings were mounted between blade and coverslip, labeled, and prepared for morphometric measurements. The points of intersection of wing veins (landmarks) were determined using a stereoscopic microscope coupled with a camera. The linear measurements of the landmarks were transformed using Procrustes to remove the size effect, leaving only the shape of the wings. The transformed data was evaluated using PCA and MANOVA to identify if there were differences in relation to the geographical location of occurrence. Thirty-three male C. dorsata wings were measured, and there was a clear separation between 3 distinct wing form groups along the Pantanal distribution. The variation in wing shape could be associated with selection from local environmental conditions in areas with distinct flooding histories, influencing migratory aspects among populations within the Brazilian Pantanal. The data for this small species, that has low dispersal capacity, is solitary, and presents an intimate relationship with soil characteristics, which directly reflects flooding aspects in the Pantanal, only reinforces the need to conserve more areas in the Brazilian Pantanal, since genetic diversity is an important factor for conservation.

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“…Floodplains such as the Pantanal are dynamic environments, whereby vegetation types are structured mainly by seasonal flood (Damasceno-Junior et al 2005, Catian et al 2018 and fire (Arruda et al 2016). To overcome such environmental filters, plants have different strategies related to persistence (Bond & Midgley 2001) and regeneration niches (Grubb 1977).…”

Section: Introductionmentioning

confidence: 99%

Soil Seed Bank in Pantanal Riparian Forest: Persistence, Abundance, Functional Diversity and Composition

2019

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The soil seed bank is a regeneration strategy for most plant species in wetlands such as the Pantanal. Soil depth is an indicator of seed bank persistence. Therefore, our objective was to assess the species composition potentially persistent in the soil seed bank, and verify the effect of depth on seed bank abundance, diversity and functional composition. We collected 40 samples (10 x 10 x 5 cm) at four depths: 0-5, 5-10, 10-15 and 15-20 cm, in ten areas along the Paraguay River (N = 10/depth). We placed the samples in trays in the greenhouse, and recorded the seedlings emergence for three months. We found 44 species from 16 families. Most species are perennial, autochoric and hydrochoric, graminoid and herbaceous, with vegetative propagation via basal regrowth. The abundance, species and functional richness decreased with increased depth. We did not find differences in species and functional composition between depths. The species share traits both related to regeneration and persistence niches in different soil layers, which indicates similarity in the functions executed by the community over a 0-20 cm depth soil profile. Species with potentially persistent seed bank also have several functional traits that allow the long-term persistence of individuals in the community, such as vegetative propagation, which confers a high potential for plant community resilience.

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Effects of Flood Pulse Dynamics on Functional Diversity of Macrophyte Communities in the Pantanal Wetland

Cited by 31 publications

References 69 publications

Reproductive Phenology of Macrophyte Community in Response to Wetland Flooding Cycle

Reproductive Phenology of Macrophyte Community in Response to Wetland Flooding Cycle

EFFECT OF THE PANTANAL’S FLOODING HISTORY IN MORPHOMETRIC ASPECTS OF THE SOLITARY PARASITOID Campsomeris dorsata (HYMENOPTERA: SCOLIIDAE)

Soil Seed Bank in Pantanal Riparian Forest: Persistence, Abundance, Functional Diversity and Composition

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