Resilience in the functional responses of Axonopus affinis Chase (Poaceae) to diurnal light variation in an overgrazed grassland

Pinheiro, Clodoaldo Leites; Rosa, Luís Mauro Gonçalves; Falqueto, Antelmo Ralph

doi:10.1016/j.agrformet.2018.12.007

Cited by 4 publications

(2 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Concerning species, the highest IVI was achieved by A. affinis (84.81), mainly due to the total number of individuals and high relative density. This is a perennial, stoloniferous, creeping, fast-growing grass species, tolerant to cutting and trampling, which is considered difficult to control due to the high rooting capacity of its stolons [24].…”

Section: Phytosociological Parameters Of Weedsmentioning

confidence: 99%

Chemical Properties of Soil and Cassava Yield as a Function of Weed Management by Cover Crops in the Amazon Ecosystem

et al. 2022

View full text Add to dashboard Cite

Cassava (Manihot esculenta) yields are severely affected by the interference of weed plants. Using cover crops for weed control appears as a sustainable alternative practice because it maintains the soil covered and reduces the need for herbicides. The aim of this study was to assess cassava crop yields and the soil chemical properties as a function of use of cover crops for weed management. Treatments were three cover crops (Brachiaria ruziziensis, Canavalia ensiformis, and Mucuna pruriens), chemical control, mechanical control, and treatment with no weed control. Cover crops reduced the diversity of species and the quantity of individuals of the weed community in cassava cultivation. The treatments with chemical and physical weed control achieved higher yields. The cover crops B. ruziziensis and C. ensiformis increased cassava yields by 30% and 14%, respectively, when compared with the treatment with no control. The cover crops increased the pH, MO, K, Ca, and Mg values when compared with the treatments with chemical and mechanical weed control. Brachiaria ruziziensis and C. ensiformis are recommended as a cover plants in cassava production systems in the Amazon region. The use of cover crops associated with cassava is a sustainable management option because, in addition to the suppressive effect on weeds, cover crops improve the chemical properties of soil, which may contribute to increasing cassava production in the long term.

show abstract

Section: Phytosociological Parameters Of Weedsmentioning

confidence: 99%

Chemical Properties of Soil and Cassava Yield as a Function of Weed Management by Cover Crops in the Amazon Ecosystem

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In their natural habitat, plants are exposed to light intensities that fluctuate considerably during the day and year (Pinheiro et al, 2019;Kükenbrinck et al, 2021). Many tropical orchid species are shade-loving plants and, therefore, occur in habitats of low light intensity (80 to 100 µmol m -2 s -1 ).…”

Section: Introductionmentioning

confidence: 99%

Exposition of three Cattleya species (Orchidaceae) to full sunlight: effect on their physiological plasticity and response to changes in light conditions

et al. 2023

View full text Add to dashboard Cite

In order to establish a link between the evolutionary history and the photochemical attributes, measurements of chlorophyll (Chl) a fluorescence were made in Cattleya warneri, C. shofieldiana and C. harrisoniana exposed to high irradiance for 5, 35, and 120 min (hereafter referred to as treatments T5, T35, and T120, respectively). The following questions are addressed: (1) Is the increased energy dissipation enough to counterbalance the excess energy that drives photosynthesis at different times of high irradiance exposure? (2) Is there an influence of the incidence and duration of light radiation on Cattleya species in full sunlight, compared to Cattleya species submitted to low irradiance? Higher relative variable fluorescence at the J-step (Vj) values followed by the lower quantum yield of electron transport (ψEo) indicate the accumulation of reduced Quinone A (QA) proportionally of sunflecks exposure time in C. warneri. The higher performance index (PIABS) and plasticity index values in C. schofieldiana indicate higher efficiency in modulating the photosynthetic apparatus under sunflecks. C. harrisoniana shows the lowest plasticity index, suppression of maximum fluorescence (Fm), and no recovery of PIABS after sunflecks. This study evidences the importance of physiological plasticity in the current geographic distribution of Cattleya in response to light pulses in species derived from fragmented habitats and the maintenance of shade to species of more primitive clades.

show abstract

Multiple herbivory pressures lead to different carbon assimilation and allocation strategies: Evidence from a perennial grass in a typical steppe in northern China

Zhang

Gong

Shi

et al. 2022

Agriculture, Ecosystems & Environment

View full text Add to dashboard Cite

Resilience in the functional responses of Axonopus affinis Chase (Poaceae) to diurnal light variation in an overgrazed grassland

Cited by 4 publications

References 81 publications

Chemical Properties of Soil and Cassava Yield as a Function of Weed Management by Cover Crops in the Amazon Ecosystem

Chemical Properties of Soil and Cassava Yield as a Function of Weed Management by Cover Crops in the Amazon Ecosystem

Exposition of three Cattleya species (Orchidaceae) to full sunlight: effect on their physiological plasticity and response to changes in light conditions

Multiple herbivory pressures lead to different carbon assimilation and allocation strategies: Evidence from a perennial grass in a typical steppe in northern China

Contact Info

Product

Resources

About