O gênero Macrolobium Schreb. (Leguminosae) no estado do Amapá, Brasil

Silva, Maria Maricélia Felix da; Bastos, Maria de Nazaré do Carmo; Gurgel, Ely Simone Cajueiro

doi:10.21826/2446-8231201772213

Cited by 3 publications

(4 citation statements)

References 9 publications

(17 reference statements)

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“…Pers. (Fabaceae) occurs in Amazonian floodplains, where it can be found in campinarana and terra firme environments (da Silva et al, 2017; Lorenzi, 2016; Martins‐da‐Silva & Lima, 2020; Targhetta et al, 2015). Campinarana is a type of vegetation in the Amazon region, with varied physiognomies, from grassland to forested.…”

Section: Methodsmentioning

confidence: 99%

“…The species has a wide distribution, including the northern Brazilian states of Pará, Amapá, Amazonas, Acre, Rondônia, and Roraima (Martins‐da‐Silva & Lima, 2020). Macrolobium bifolium is popularly known as iperana , ipê‐da‐várzea , ipê , and ipezeiro (da Silva et al, 2017; Lorenzi, 2016). Its fruits are leguminous, dehiscent, woody, oblong to spatulate, and may contain one to three oval or orbicular seeds (da Silva et al, 2017; Feitoza et al, 2014), measuring on average 3.7 × 3.7 cm.…”

Section: Methodsmentioning

confidence: 99%

“…Macrolobium bifolium is popularly known as iperana , ipê‐da‐várzea , ipê , and ipezeiro (da Silva et al, 2017; Lorenzi, 2016). Its fruits are leguminous, dehiscent, woody, oblong to spatulate, and may contain one to three oval or orbicular seeds (da Silva et al, 2017; Feitoza et al, 2014), measuring on average 3.7 × 3.7 cm. The seeds are denser than water, as previously recorded for M. acaciifolium (Kubitzki & Ziburski, 1994); therefore, they depend on the fruit to be dispersed by floating.…”

Section: Methodsmentioning

confidence: 99%

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Experimentation, modelling, and simulation of hydrochory in an Amazonian river

et al. 2022

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Seed transport by hydrochory is a key mechanism of long‐distance dispersal constrained by attributes of the seed and hydrodynamics of the river, influenced by seasonal precipitation and hydrological pulses. However, the extent to which a hydrodynamic model can predict seed dispersal influenced by a tributary is unknown. The study was conducted along a 10‐km stretch of the Falsino River in Amapá, Brazil. Hydrodynamic parameters from the 2021 rainy season were used to calibrate a three‐dimensional numerical model (SisBaHia) and simulate hydrochory of Macrolobium bifolium, a widely distributed species in the Amazon floodplains. This model was coupled with a Lagrangian dispersal model to estimate the average transport distance of the fruit plume. The simulated results were compared statistically with those of dispersal quantified in the field. The field experiment coincided with the maximum hydrological pulse, providing with a maximum potential distance of longitudinal dispersal fruit of c. 10 km in 2 hr. The orders of magnitude of the mean plume transport (observed and numerically simulated centre of mass) were compatible with each other over six longitudinal tracking sections (4.0% ≤ estimated × observed error ≤ 16.5%). Different channel stretches had distinct hydraulic characteristics that influenced spatial dispersal dynamics and are likely to be factors influencing the distribution of M. bifolium in these environments. The present research is a contribution to understanding fluvial hydrodynamics and hydrochory by M. bifolium, whose seed dispersal syndrome is an adaptive characteristic that might explain its abundance and richness in these Amazonian riparian zones. We used M. bifolium as a model species to understand the role of seasonal flood pulse and fluvial hydrodynamics related to hydrochory favouring.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Experimentation, modelling, and simulation of hydrochory in an Amazonian river

et al. 2022

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“…As bibliografias específicas consultadas para cada gênero foram Miotto (1987) para Clitoria L.; Janke et al (1988) para Poiretia Vent. ; Oliveira (1990) para Desmodium Desv. ; Pinheiro & Miotto (2001) para Lupinus L.; Oliveira (2002) para Aeschynomene L.; Izaguirre & Beyhaut (2003) para Enterolobium Mart.…”

Section: Identificação Taxonômicaunclassified

Leguminosae na área de conservação in situ do butiazal da Fazenda São Miguel, Tapes, Rio Grande do Sul

et al. 2023

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RESUMO -O presente trabalho é um inventário das Leguminosae do butiazal da Fazenda São Miguel, Tapes, Rio Grande do Sul. Foram registradas duas subfamílias (Caesalpinioideae e Papilionoideae), nove tribos, 19 gêneros e 32 espécies. As tribos mais representativas são Phaseoleae (7 spp.), Dalbergieae (6 spp.) e Desmodieae (5 spp.) e os gêneros são Desmodium (5 spp.), Mimosa (3 spp.) e Chamaecrista (3 spp.). Verificou-se o estado de conservação das espécies e apenas seis espécies foram avaliadas quanto ao nível de ameaça de extinção, estando classificadas como pouco preocupante, o que demonstra a deficiência de dados sobre níveis de ameaça das demais espécies da família. Quanto à distribuição geográfica no Brasil, Crotalaria tweediana e Mimosa sanguinolenta ocorrem apenas nos três estados da Região Sul do Brasil. Lupinus lanatus e Rhynchosia lineata ocorrem exclusivamente nos estados de Santa Catarina e Rio Grande do Sul, enquanto Clitoria nana, Lupinus albescens e Macroptilium psammodes somente no Rio Grande do Sul.

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