Flora da Reserva Ducke, Amazonas, Brasil: Marantaceae

Forzza, Rafaela Campostrini

doi:10.1590/2175-7860200758304

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…Essa fase sucessional é caracterizada por intensa competição interespecífica por água e nutrientes, onde não há forte radiação que favoreça espécies intolerantes à sombra. Devido à família ser formada por ervas perenes de grandes populações (FORZZA, 2007), a maioria das espécies é bem adaptada a ambientes sombreados, o que explica a tendência crescente de ocupação no sub-bosque com o fechamento das clareiras.…”

Section: Resultsunclassified

Dinâmica da estrutura da vegetação do sub-bosque sob influência da exploração em uma floresta de terra firme no município de Moju – PA

Mendes

Jardim²,

Carvalho³

et al. 2013

Ciênc. Florest.

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http://dx.doi.org/10.5902/198050989283Analisou-se a dinâmica da estrutura da vegetação do sub-bosque de uma floresta de terra firme sob a influência de clareiras durante 12 anos após a exploração florestal de impacto reduzido no município de Moju, Pará, na Amazônia Oriental, Brasil. Angiospermas de 10 cm de altura a 5 cm de DAP foram inventariadas em 468 m² de amostras, em seis ocasiões (1998, 1999, 2000, 2001, 2007 e 2010), analisadas de acordo com as formas de vida (árvores, arbustos, lianas, ervas e palmeiras), considerando a abundância, a frequência, as categorias de tamanho (CT1 = 10 cm ≤ HT < 50 cm; CT2 = 50 cm ≤ HT ≤130 cm; CT3 = 130 cm < HT e DAP < 2 cm; e CT4 = 2 cm ≤ DAP < 5 cm) e a regeneração natural relativa. As famílias mais representativas foram Burseraceae, Marantaceae, Violaceae e Lecythidaceae em todas as ocasiões, enquanto as espécies mais importantes foram Monotagma sp1., Monotagma sp2., Rinorea guianensis, Lecythis idatimon e Protium pilosum. As formas de vida mais representativas foram, em ordem decrescente, árvores, ervas e lianas em todas as ocasiões. A dinâmica das diferentes formas de vida foi dependente da intensidade de luz. As clareiras possibilitaram o estabelecimento de regeneração de espécies comerciais e potencialmente comerciais, indicando que essas espécies não necessitam de condução para garantir o estoque para futuros cortes.

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Section: Resultsunclassified

Dinâmica da estrutura da vegetação do sub-bosque sob influência da exploração em uma floresta de terra firme no município de Moju – PA

Mendes

Jardim²,

Carvalho³

et al. 2013

Ciênc. Florest.

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“…The specimens were observed with Leitz Wetzlar Germany and Olympus BX51 microscopes from the Legal Chemistry Division (Natural Sciences Area). Identification of continental and marine palynomorphs followed Forzza [22], Morales [23], Verettoni and Aramayo [24], and Catalog of Diatom Names [25]. The species were photographed for illustrative purposes using light microscopy.…”

Section: Methodsmentioning

confidence: 99%

Palynology and mycology as biological evidence in a homicide case

Povilauskas

Tranchida

2023

Journal of Forensic Sciences

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Criminal cases are studied from several disciplines to link a suspect with a criminal act. In this case, a man was reported missing in a coastal area in Buenos Aires Province, Argentina. The victim's relatives pointed to a possible suspect, and the local police carried out the investigation. We contributed to this research by applying palynological and mycological techniques. Palynomorphs and fungal spores offer valuable trace evidence, as they can be easily transferred between objects and crime scenes due to their minute size and persist on them for a long time. The victim was found 25 days later, lying on sandy soil, which partially covered the body, 35 km from where the suspect was arrested. Comparative samples were collected from the crime scene and the suspect's home and belongings (clothes, footwear, and seized vehicle). The palynological associations obtained from the crime scene and the defendant's belongings were dominated by diatoms and acritarchs (Acantomorphitae), all elements of marine origin, and a high CFU number of Bipolaris cynodontis, which allowed the defendant's clothing to be related to the place of corpse discovery. Soil from the defendant's home had an entirely continental composition, and the fungal biota was characteristic of prairie areas which were different from those of the crime scene.

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“…Here, we evaluated the contribution of floral visitors to plant breeding using Calathea mansonis Körn (Zingiberales: Marantaceae), an understory herb that occurs from central America to northern South America (Forzza 2007). We hypothesized that bee behaviour is conditioned by sex, body size, and floral display present in each plot.…”

Section: Introductionmentioning

confidence: 99%

Orchid bees enhance seed set production of an understory herb in the Western Brazilian Amazon

Brito,

Silva,

Contrera

et al. 2023

J Poll Ecol

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Bee pollination is an important ecosystem service related to the maintenance of many flowering plants. We evaluated the relationship between orchid bee foraging time and the density of flowering plants and whether visitation varied according to the sex and size class of bees, using Calathea mansonis as a model species. We monitored 10 plots between December 2009 and November 2010 in a forest fragment in Senador Guiomard, Acre, Brazil. We counted the number of flowering plants and flowers per plant and the behaviour of the observed bees. Additionally, we compared the bagged and exposed inflorescences for self-compatibility analysis. We sampled 173 orchid bees from 13 species, with Eulaema cingulata as the most abundant visitor. Eulaema (large bees) were more effective pollinators than Euglossa (small bees). We also found Eulaema polyzona individuals feeding on a Marantaceae species for the first time. The time spent by the bees visiting flowers did not differ with the density of flowering plants or the number of flowers per plant. However, flowers exposed to visitors produced 35% more seeds and 15% heavier seeds than bagged flowers. Considering plant–bee interactions, orchid bees may increase gene flow and compensate for the clonal reproduction of this herb.

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Flora da Reserva Ducke, Amazonas, Brasil: Marantaceae

Cited by 11 publications

References 2 publications

Dinâmica da estrutura da vegetação do sub-bosque sob influência da exploração em uma floresta de terra firme no município de Moju – PA

Dinâmica da estrutura da vegetação do sub-bosque sob influência da exploração em uma floresta de terra firme no município de Moju – PA

Palynology and mycology as biological evidence in a homicide case

Orchid bees enhance seed set production of an understory herb in the Western Brazilian Amazon

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