Etzel Garrido

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Cactaceae represents one of the most species-rich families of succulent plants native to arid and semi-arid ecosystems, yet the associations Cacti establish with microorganisms and the rules governing microbial community assembly remain poorly understood. We analyzed the composition, diversity, and factors influencing above- and below-ground bacterial,(More)
The success of sustainable crop production depends on our ability to select or create varieties that can allocate resources to both growth and defence. However, breeding efforts have emphasized increases in yields but have partially neglected defence traits against pests. Estimating the costs of multiple defences against tuber herbivores and the tradeoffs(More)
Plants mediate interactions between aboveground and belowground herbivores. Although effects of root herbivory on foliar herbivores have been documented in several plant species, interactions between tuber-feeding herbivores and foliar herbivores are rarely investigated. We report that localized tuber damage by Tecia solanivora (Guatemalan tuber moth)(More)
We compare the properties of three-body systems obtained with two-body potentials with Pauli forbidden states and with the corresponding phase equivalent two-body potentials. In the first case the forbidden states are explicitly excluded in the calculation. Differences arise due to the off-shell properties of these on-shell equivalent potentials. We use the(More)
The continuum resonance spectrum of 5 H (3 H+n+n) is investigated by use of the complex scaled hyperspherical adiabatic expansion method. The crucial 3 H-neutron potential is obtained by switching off the Coulomb part from successful fits to 3 He-proton experimental data. These two-body potentials must be expressed exclusively by operators conserving the(More)
The hyperspherical adiabatic expansion is combined with complex scaling and used to calculate low-lying nuclear resonances of 12 C in the 3α-model. We use Ali-Bodmer potentials and compare results for other potentials α − α with similar 8 Be-properties. A three-body potential is used to adjust the 12 C-resonance positions to desired values extending the(More)
We use the hyperspherical adiabatic expansion method to discuss the the two mechanisms of sequential and direct three-body decay. Both short-range and Coulomb interactions are included. Resonances are assumed initially populated by a process independent of the subsequent decay. The lowest adiabatic potentials describe the resonances rather accurately at(More)
The complex energies of the three-body resonances for one infinitely heavy particle and two non-interacting light particles are the sum of the two contributing two-body complex resonance energies. The bound state of a Borromean system originates from a resonance when the third interaction is introduced, a finite mass is allowed and proper angular momentum(More)