Competition between corals and macroalgae is often assumed to occur on reefs, especially those that have undergone shifts from coral to algal dominance; however, data examining these competitive interactions, especially during the early life-history stages of corals, are scarce. We conducted a series of field and outdoor seawater-table experiments to test the hypothesis that allelopathy (chemic...

The Brazilian cerrado presents strong climate seasonality. During the dry season, plants may be exposed to stressful situations, such as a soil surface water deficit, that stimulate their chemical defenses. However, the seasonality effect on the production of allelopathic compounds of cerrado plant species is poorly understood. In this study, the phytotoxic activities of common native cerrado p...

The paper studies a modified Lotka-Volterra competition system with time-delays, which describes the growth of two species of plankton with competitive and allelopathic effects on each other. With the help of Mawhin’s continuation theorem of coincidence degree theory, we obtain a set of sufficient conditions for the existence of multiple positive periodic solutions. Finally, we carry out a nume...

Teak (Tectona grandis L.f.) is one of the most valuable timber species, and cultivated in agroforestry systems many countries across tropical subtropical regions world. The species also essential trees home gardens South Asia due to its wood quality medicinal value folk remedies. It a deciduous tree amount litter that falls from teak huge. decomposition rate relatively fast humid conditions. in...