LIVIVO - Search results -

Search results

Result 1 - 10 of total 69

Search options

Article ; Online: Abiotic drivers shape seed inputs and outputs in a tropical wetland on Croton trinitatis population

Francielli Bao / Arnildo Pott / Pedro Manuel Villa

Ecological Processes, Vol 11, Iss 1, Pp 1-

2022 Volume 13

Abstract: Abstract 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 ... ...

Abstract	Abstract 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.
Keywords	Environmental filter ; Flood disturbance ; Pantanal ; Population ecology ; Seasonal change ; Seed predation ; Ecology ; QH540-549.5
Subject code	580
Language	English
Publishing date	2022-01-01T00:00:00Z
Publisher	SpringerOpen
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Morphological-anatomical and chemical features of Copernicia alba fruits and seeds, a palm from Brazilian Pantanal.

Rosa Helena da Silva / Anny Beatriz Silva / Rafael Arruda / Isabela Pavão Vargas / Fabiana Fonseca Zanoelo / Geraldo Alves Damasceno Junior / Arnildo Pott / Rosani do Carmo de Oliveira Arruda

PLoS ONE, Vol 18, Iss 3, p e

2023 Volume 0282775

Abstract: Copernicia alba (Arecaceae) is a palm tree regionally known as carandá that forms large populations and produces abundant fruits, an important food source for the local fauna in Brazilian wetlands. The fruits present morphological variations regarding ... ...

Abstract	Copernicia alba (Arecaceae) is a palm tree regionally known as carandá that forms large populations and produces abundant fruits, an important food source for the local fauna in Brazilian wetlands. The fruits present morphological variations regarding color, shape and dimensions. In this study fruits of different shapes were collected and processed following routine techniques in plant morphology, and biochemistry analysis of endosperm. (hemicellulose) The fruits isdark, of the berry type, with partially fibrous pericarp, rich in phenolic compounds; the ruminated seed coat also contains phenols; the endosperm, formed of cells with highly thickened, not lignified hemicellulosic walls, stores xyloses, proteins and lipids. The embryo is short and straight. Xylose is the leading sugar of xylan, which can be liberated by hydrolysis with specific enzymes, such as xylanases. This sugar is of interest in several industrial sectors, such as the production of biofuels and xylitol for foods. Excepting depth of seed rumination, C. alba fruits do not have relevant differences in anatomy and classes of substances detected. The fruit yield showed differences associated with its shape, indicating the best utilization. Considering fruit anatomical features and tissue composition, we highlight that the seeds of C. alba have the potential as a new functional food source.
Keywords	Medicine ; R ; Science ; Q
Subject code	571
Language	English
Publishing date	2023-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Diaspore bank of aquatic macrophytes maintaining species diversity in a Neotropical pond

Fernando Alves Ferreira / Gisele Catian / Arnildo Pott

Acta Scientiarum: Biological Sciences, Vol 38, Iss

2016 Volume 4

Abstract: The diaspore bank is an important component of biological diversity acting mainly as storage and source of diaspores, which also indicate dynamics and patterns of maintenance of plant diversity. We tested the hypothesis that the diaspore bank would be ... ...

Abstract	The diaspore bank is an important component of biological diversity acting mainly as storage and source of diaspores, which also indicate dynamics and patterns of maintenance of plant diversity. We tested the hypothesis that the diaspore bank would be the responsible factor for the maintenance of the aquatic plant species, used two techniques to evaluate the diaspore bank: seedling emergence and direct counting of field samples. Density and richness of the diaspore bank were correlated with plant cover of the aquatic macrophyte communities and also with the euphotic zone radiation in different phases of the hydrological cycle. The diaspore bank is a key factor in maintenance of aquatic macrophyte assemblages in this pond. Nymphaea amazonum was one of the dominant species in the pond and presented temporally peaks of plant cover. Furthermore, depth allowed induction of germination of stored diaspores. Therefore, the diaspore bank may predict which species colonizes a site when environmental characteristics are favorable and allows inferring which processes are linked to changes in structure of aquatic macrophyte assemblages. These mechanisms are the means for recovery of macrophyte species under natural disturbances, represented by water level oscillations in floodplains.
Keywords	aquatic plant ; plant ecology ; seed bank ; wetland ; Biology (General) ; QH301-705.5 ; Microbiology ; QR1-502
Subject code	580
Language	English
Publishing date	2016-12-01T00:00:00Z
Publisher	Universidade Estadual de Maringá
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Flood and fire affect the soil seed bank of riparian forest in the Pantanal wetland

Thiago da Costa Kohagura / Evaldo Benedito de Souza / Francielli Bao / Fernando Alves Ferreira / Arnildo Pott

Rodriguésia, Vol

2020 Volume 71

Abstract: 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/ ... ...

Abstract	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.
Keywords	Diaspores ; Fabaceae ; floodable forest ; neotropical wetland ; plant ecology ; Biology (General) ; QH301-705.5 ; Botany ; QK1-989
Subject code	580
Language	English
Publishing date	2020-02-01T00:00:00Z
Publisher	Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Antimicrobial potential of Pectis substriata essential oil (Asteraceae) against drug-resistant Staphylococcus strains

GENILSON S. DE JESUS / ANA C. MICHELETTI / KAREN M. TAKAHASHI / TATIANA MATAYOSHI / ARNILDO POTT / NÍDIA C. YOSHIDA

Anais da Academia Brasileira de Ciências, Vol 92, Iss

2020 Volume 4

Abstract: Abstract Resistant bacterial infections represent one of the major threats in worldwide health services. In this scenario, plant essential oils are considered promising antimicrobial agents. Therefore, this study aimed to evaluate the antimicrobial ... ...

Abstract	Abstract Resistant bacterial infections represent one of the major threats in worldwide health services. In this scenario, plant essential oils are considered promising antimicrobial agents. Therefore, this study aimed to evaluate the antimicrobial potential of Pectis substriata essential oil alone and in combination with antibiotics, against clinical drug-resistant bacterial strains. The essential oil from the plant aerial parts was obtained by hydrodistillation. Antimicrobial activity was assessed against standard and clinical bacterial strains by broth microdilution method, and the synergistic effect was evaluated by checkerboard microtiter assay. The oil alone showed significant activity against clinical Staphylococcus warneri (62.5 µg.mL-1), and was moderately active on Staphylococcus aureus (standard strain) and clinical Staphylococcus intermedius (125 and 250 µg.mL-1, respectively). Synergism was achieved for the combinations of essential oil and ampicillin on S. warneri and of oil and kanamycin on S. intermedius. Additive effects were also observed. This is the first report of the chemical composition of P. substriata essential oil, and the results revealed the presence of compounds with proven antimicrobial activity. The oil proved active against resistant Gram-positive cocci, and showed synergism with antibiotics, revealing its potential use as adjuvant or in the development of new alternative treatments of drug-resistant antimicrobial infections.
Keywords	Terpenes ; antimicrobial ; synergism ; perillaldehyde ; One Health ; Science ; Q
Subject code	571
Language	English
Publishing date	2020-12-01T00:00:00Z
Publisher	Academia Brasileira de Ciências
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article: Seasonal flooding, topography, and organic debris interact to influence the emergence and distribution of seedlings in a tropical grassland

Bao, Francielli / Arnildo Pott / Marco Antonio de Assis / Rafael Arruda / Tracy Elsey‐Quirk

Biotropica. 2018 July, v. 50, no. 4

2018

Abstract: In seasonally flooded wetlands, inundation and associated organic debris deposition followed by a drawdown period can promote plant community diversity across space and time. Post‐flood regeneration might be influenced by the direct effect of flooding on ...

Abstract	In seasonally flooded wetlands, inundation and associated organic debris deposition followed by a drawdown period can promote plant community diversity across space and time. Post‐flood regeneration might be influenced by the direct effect of flooding on seed dispersal and seedling emergence, as well as the indirect effect of organic debris on seed trapping and germination. Our objective was to examine the influence of seasonal flooding, topography, and organic debris cover on seedling distribution in a seasonally flooded grassland. We measured species richness, seedling abundance, and organic debris cover for 3 yr in a seasonally flooded grassland in the Pantanal, Brazil, at three topographic levels at the end of the flood season and during the dry season when there was no debris deposition. A total of 43 species were recorded, with no difference in species richness detected between seasons. However, the abundance of some species was higher post‐flood than during the dry period. The greatest seedling abundance and richness were found post‐flood at intermediate elevations, followed by high and the lowest elevations. Seed germination and seedling establishment were likely suppressed at low topographic positions due to shading from organic debris and poor drainage. Therefore, areas with predictable annual floods promote diversity by creating spatial and temporal variations in environmental conditions.
Keywords	altitude ; drainage ; drawdown ; dry season ; floods ; grasslands ; plant communities ; plant establishment ; seed dispersal ; seed germination ; seedling emergence ; seedlings ; shade ; species diversity ; temporal variation ; trapping ; wetlands ; Brazil ; Pantanal
Language	English
Dates of publication	2018-07
Size	p. 616-624.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	2052061-X
ISSN	1744-7429 ; 0006-3606
ISSN (online)	1744-7429
ISSN	0006-3606
DOI	10.1111/btp.12550
Database	NAL-Catalogue (AGRICOLA)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Article: Ecological succession of aquatic macrophytes on floating meadows in the Pantanal wetland

Coutinho, BrunaAlves / Arnildo Pott / Bruno Arguelho Arrua / Camila Aoki / Vali Joana Pott

Revista brasileira de botânica. 2018 Mar., v. 41, no. 1

2018

Abstract: With the aim of documenting aquatic macrophyte succession on floating meadows and its relationship with histosol thickness, we sampled six-hundred 0.5 × 0.5 m2 plots of ten randomly chosen floating meadows in Baía Grande lake (Aquidauana, MS, Brazil). ... ...

Abstract	With the aim of documenting aquatic macrophyte succession on floating meadows and its relationship with histosol thickness, we sampled six-hundred 0.5 × 0.5 m2 plots of ten randomly chosen floating meadows in Baía Grande lake (Aquidauana, MS, Brazil). The floating meadows were marked in order to follow, since August 2014–August 2015, floristic and phytosociological changes and to assess their relationship with histosol thickness. We recorded 58 species belonging to 23 families and 47 genera. The richest families were Poaceae (8 species), Asteraceae (7) and Cyperaceae (6). Four species stood out for their high importance value: Oxycaryum cubense (Poepp. & Kunth) Lye, Ludwigia helminthorrhiza (Mart.) H. Hara, Eichhornia azurea (Sw.) Kunth and Vigna longifolia (Benth.) Verdc. Histosol thickness of the floating meadows varied from 1 to 51 cm, making it possible to classify them into three classes. We observed that most species (63.3%) were in the initial and intermediate stages of succession (1–34 cm histosol) and that species were replaced as a function of histosol thickness. We conclude that floating meadows have succession stages with various species of aquatic macrophytes related with histosol thickness, but species composition regarding succession stages differs from other water bodies in the Pantanal wetland.
Keywords	Asteraceae ; Cyperaceae ; ecological succession ; Eichhornia azurea ; Histosols ; lakes ; Ludwigia ; macrophytes ; meadows ; phytosociology ; Poaceae ; species diversity ; surface water ; Vigna ; wetlands ; Brazil ; Pantanal
Language	English
Dates of publication	2018-03
Size	p. 65-75.
Publishing place	Springer International Publishing
Document type	Article
ZDB-ID	2686406-X
ISSN	1806-9959 ; 0100-8404
ISSN (online)	1806-9959
ISSN	0100-8404
DOI	10.1007/s40415-017-0425-9
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article: Seed bank of seasonally flooded grassland: experimental simulation of flood and post-flood

Bao, Francielli / Tracy Elsey-Quirk / Marco Antonio de Assis / Arnildo Pott

Aquatic ecology. 2018 Mar., v. 52, no. 1

2018

Abstract: Wetland seed banks comprise the propagules of plant species that have species-specific germination requirements for germination in either flooded or dry conditions. At the community level, wetland structure and succession during and after a seasonal ... ...

Abstract	Wetland seed banks comprise the propagules of plant species that have species-specific germination requirements for germination in either flooded or dry conditions. At the community level, wetland structure and succession during and after a seasonal flooding event depends upon the early life-history requirements of species, including germination under flooded and dry conditions. We examined the effects of simulated flood and post-flood scenarios on seedling emergence from a seed bank of seasonally flooded grassland in the Pantanal, Brazil. Field samplings were conducted in both wet and dry seasons, both of which were subject to flood and post-flood conditions. A total of 70 species emerged from the seed bank, dominated by Poaceae and Cyperaceae. Sixteen species were exclusive to the wet and one exclusive to the dry season. The richness of perennial species was higher under flood conditions, while the richness of annuals was greater post-flood. In general, the aquatic and amphibious species exhibited a significant germination response to flooding. Terrestrial species only germinated in post-flood conditions, with higher richness in the dry season. Four species had high seedling abundance in both treatments. The capacity of regeneration by seeds is high in these grasslands and can be increased by seasonal flooding and drawdown. In these seasonally flooded grasslands, we observed three main germination strategies: under flooded conditions, aquatic and amphibious species; post-flood conditions, an explosion of annual amphibious and terrestrial species; and in moist soil, perennial terrestrial species. The differential responses to flooding versus post-flood conditions help to maintain the structure and species richness in the community over time.
Keywords	Cyperaceae ; Poaceae ; annuals ; buried seeds ; drawdown ; dry season ; flooded conditions ; germination ; grasslands ; life history ; seedling emergence ; seedlings ; soil ; species diversity ; wetlands ; Brazil ; Pantanal
Language	English
Dates of publication	2018-03
Size	p. 93-105.
Publishing place	Springer Netherlands
Document type	Article
ZDB-ID	1411979-1
ISSN	1573-5125 ; 1386-2588
ISSN (online)	1573-5125
ISSN	1386-2588
DOI	10.1007/s10452-017-9647-y
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

Z 7664: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Nutraceutic Potential of Bioactive Compounds of Eugenia dysenterica DC in Metabolic Alterations

Lidiani Figueiredo Santana / Sandramara Sasso / Diana Figueiredo Santana Aquino / Karine de Cássia Freitas / Rita de Cássia Avellaneda Guimarães / Arnildo Pott / Valter Aragão do Nascimento / Danielle Bogo / Patrícia de Oliveira Figueiredo / Priscila Aiko Hiane

Molecules, Vol 27, Iss 8, p

2022 Volume 2477

Abstract: The fruit and leaves of Eugenia dysenterica DC., locally known as cagaita , are rich in antioxidant glycosylated quercetin derivatives and phenolic compounds that have beneficial effects on diabetes mellitus, hypertension and general inflammation. We ... ...

Abstract	The fruit and leaves of Eugenia dysenterica DC., locally known as cagaita , are rich in antioxidant glycosylated quercetin derivatives and phenolic compounds that have beneficial effects on diabetes mellitus, hypertension and general inflammation. We conducted a literature search to investigate the nutraceutical potentials of these phenolic compounds for treating obesity, diabetes mellitus and intestinal inflammatory disease. The phenolic compounds in E. dysenterica have demonstrated effects on carbohydrate metabolism, which can prevent the development of these chronic diseases and reduce LDL (low-density lipoprotein) cholesterol and hypertension. E. dysenterica also improves intestinal motility and microbiota and protects gastric mucosa, thereby preventing inflammation. However, studies are necessary to identify the mechanism by which E. dysenterica nutraceutical compounds act on such pathological processes to support future research.
Keywords	Brazilian fruit ; chronic diseases ; inflammation mediators ; Organic chemistry ; QD241-441
Subject code	571
Language	English
Publishing date	2022-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: High Concentration of Heavy Metal and Metalloid Levels in Edible Campomanesia adamantium Pulp from Anthropic Areas

David Johane Machate / Elaine S. de Pádua Melo / Daniela G. Arakaki / Rita de Cássia Avellaneda Guimarães / Priscila Aiko Hiane / Danielle Bogo / Arnildo Pott / Valter Aragão do Nascimento

International Journal of Environmental Research and Public Health, Vol 18, Iss 5503, p

2021 Volume 5503

Abstract: This study aimed to quantify the extent of heavy metal, non-metal and metalloid levels in the Campomanesia adamantium pulp obtained from an area crossed by road experiencing high large vehicle traffic and intensive agriculture modern farming, to monitor ... ...

Abstract	This study aimed to quantify the extent of heavy metal, non-metal and metalloid levels in the Campomanesia adamantium pulp obtained from an area crossed by road experiencing high large vehicle traffic and intensive agriculture modern farming, to monitor the health risks associated with pulp consumption by humans. For this purpose, in three spots located within this area, ripe fruits were collected on the roadside, bush and farm-margin. Pulp samples were digested by microwave-assisted equipment, and chemical elements were quantified by ICP OES. The concentrations of K, Pb, Se, Fe, Mo, Zn, Co, Ni and Mn in the pulp collected in roadside/bush points showed statistical differences ( p < 0.05). The heavy metals and metalloid concentrations that exceeded FAO/WHO standards were ordered Pb > As > Mo > Co > Ni > Mn > Cr. Therefore, among these metalloid and heavy metals, As, Pb and Cr were found to be higher in farm-margin > roadside > bush (1.5 × 10 −3 , 1.1 × 10 −3 and 6.2 × 10 −4 ), respectively. Therefore, As is the most important metalloid with higher levels in farm-margin, roadside and bush (1.5 × 10 −3 , 1.0 × 10 −3 and 6.0 × 10 −4 > 10 −6 –10 −4 and 3.33, 2.30 and 1.34 > 1), respectively, to total cancer risk and hazard quotient, if 10 g daily of pulp are consumed.
Keywords	Cerrado ; myrtaceae ; edible fruit ; farm-margin ; roadside ; macro- and microelements ; Medicine ; R
Subject code	333
Language	English
Publishing date	2021-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED