Spatio-temporal variation in leaf morphofunctional attributes and relation to growth and survival of young woody plants

Araujo, Vanessa Kelly Rodrigues de; Silva, Gabriela Bispo da; Araújo, Elcida de Lima; Pimentel, Rejane Magalhães de Mendonça; Silva, Kleber Andrade da

doi:10.1007/s40415-018-00511-0

Cited by 3 publications

(1 citation statement)

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“…The shoots with the highest moisture content originated in Fanggan and Shandong, but overall, the water content did not appear to result from different ecosystem water availabilities. Since leaves analyzed for RWC were relatively young, leaf age may be a possible explanation for the high water content, a phenomenon that has previously been described in other species [49]. Although biomass moistness was expected to be lower in the brackish and saline estuaries and in the heavily impacted oil fields in the Chinese populations [41], the freshwater populations from US and Denmark were not found to be accordingly higher.…”

Section: Discussionmentioning

confidence: 75%

Suitability of Wild Phragmites australis as Bio-Resource: Tissue Quality and Morphology of Populations from Three Continents

Eller

Guo

et al. 2020

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We collected and analyzed morphological characteristics and tissue nutrient concentrations of common reed (Phragmites australis) populations from Denmark, USA, and China, harvested late summer at the peak of the biomass production. The aim was to estimate the suitability of the biomass for different bioenergy purposes. The potential of reed as bioenergy feedstock is increasingly recognized, as the species already is utilized for construction, water purification, and pulp production. Our morphological data showed that biomass yield can be allometrically predicted to be high, especially in the reed populations of the US. However, no consistent pattern according to geographical origin was detected, and especially tissue nutrient concentrations varied within and between populations. Some mineral concentrations were above the desirable threshold for biocombustion, such as nitrogen (N) and sulfur (S). Iron (Fe) was higher than the critical toxicity concentration in many populations and hence, negatively correlated with morphological and growth traits. A different harvest time is likely to result in lower ion concentrations. Some populations had low C to N ratios, which are suitable for biomethane production, while the relatively low ash content of all populations (ranging from 3.9% to 8.5%) suggested a high heating value and theoretical energy potential. Reed biomass production is a promising alternative to fossil fuels and potentially suitable for other bio-based product. Improved knowledge is needed to examine local needs and application possibilities for reed biomass.

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Section: Discussionmentioning

confidence: 75%

Suitability of Wild Phragmites australis as Bio-Resource: Tissue Quality and Morphology of Populations from Three Continents

Eller

Guo

et al. 2020

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Dynamics in the emergence of dormant and non-dormant herbaceous species from the soil seed bank from a Brazilian dry forest

Souza

Aguiar

Santos

et al. 2020

Journal of Plant Ecology

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Aims In dry tropical forests, herbaceous species may have dormancy mechanisms and form persistent and transient seed banks in the soil. Evolutionarily acquired, these mechanisms are efficient for the establishment and survival of these herbs, especially in forests with unpredictable climates, such as the Caatinga. Thus, our objective was to verify whether the studied herbaceous species adopt the physical dormancy mechanism and how these natural barriers are overcome, to understand the temporal dynamics existing in the soil seed bank from a Brazilian dry tropical forest. Methods Seeds of five native herbaceous species from the Caatinga forests were selected and submitted to pre-germinative treatments for verifying the presence of physical dormancy. We collected soil samples in the rainy and dry seasons for four consecutive years and monitored the emergence of the selected herbaceous in the greenhouse. We verified the differences in germination and seed bank emergence in the soil by generalized linear models. Important Findings The presence and absence of physical dormancy were observed in seeds from Caatinga herbaceous species. We found intraspecific and interspecific differences in the herbaceous emergence from soil seed banks between years and climatic seasons. In perennial herbs, consecutive lack of emergence between seasons and years was frequent, which suggests a direct relationship with the mechanism of physical dormancy and the environmental conditions necessary to overcome integument barriers. In these species, seed dimorphism and dormancy may confer additional advantages to their survival. Moreover, presenting intermediate levels of physical dormancy in an annual species may be an evolutionary adjustment to rainfall unpredictability. In contrast, we found that the annual herb without dormancy is more sensitive to seasonal and interannual climate changes, as evidenced by the increase and significant reduction of its emergence in the soil seed bank. These differences acquired evolutionarily are advantageous for the establishment of herbaceous populations, mainly in semiarid regions with an unpredictable climate.

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Uso, conhecimento e conservação de Myracrodruon urundeuva: uma revisão sistemática

Domingos

Silva

2020

RSD

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Myracrodruon urundeuva, conhecida popularmente como aroeira, é amplamente distribuída no território brasileiro e considerada espécie polivalente por sua diversidade de usos, que incluem aplicações como combustível, madeira, forragem, apicultura, recuperação de áreas e o uso medicinal, muito praticado por populações rurais. Essa diversidade de aplicações pode ameaçar a conservação da espécie devido à exploração excessiva e o uso de técnicas inadequadas que podem resultar em declínio das populações naturais. Com este trabalho, o objetivo foi verificar o conhecimento atual sobre M. urundeuva e seu estado de conservação. Para tanto, foi realizada uma revisão sistemática seguindo o modelo PRISMA, com busca de artigos publicados entre 2010 e 2020. Foram identificados inicialmente 333 artigos, dos quais 165 foram incluídos na revisão. Os artigos se distribuem nas categorias atividade biológica, biologia vegetal e ecologia, composição química, etnobotânica e produção. A maior parte dos estudos diz respeito à avaliação das atividades biológicas da espécie com evidências de efeitos anti-inflamatório, antimicrobiano, antioxidante, antifúngico, antiviral, inseticida e neuroprotetor entre outros, corroborando aplicações terapêuticas da espécie descritas em estudos etnobotânicos. A aroeira não é considerada oficialmente ameaçada de extinção. Embora muitos autores asseverem que a exploração excessiva da espécie seja uma ameaça a sua conservação, não foram encontrados dados que suportem tal suposição. São necessários estudos que avaliem o estado populacional da espécie, a condição ambiental de sua área de distribuição e seu volume de exploração, para que se possa avaliar adequadamente o estado de conservação da espécie e proposição de medidas para seu uso sustentável.

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Spatio-temporal variation in leaf morphofunctional attributes and relation to growth and survival of young woody plants

Cited by 3 publications

References 31 publications

Suitability of Wild Phragmites australis as Bio-Resource: Tissue Quality and Morphology of Populations from Three Continents

Suitability of Wild Phragmites australis as Bio-Resource: Tissue Quality and Morphology of Populations from Three Continents

Dynamics in the emergence of dormant and non-dormant herbaceous species from the soil seed bank from a Brazilian dry forest

Uso, conhecimento e conservação de Myracrodruon urundeuva: uma revisão sistemática

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