Abstract A meta-model of diffusively coupled Lotka–Volterra systems used to model various biomedical phenomena is considered in this paper. Necessary and sufficient conditions for the existence of nth order solitary solutions are derived via a…
Entre marzo y octubre de 2002 se compararon los ensamblajes de hormigas que forrajean en el suelo en un sistema no manejado (reserva natural El Ciprés) y en algunas fincas vecinas. En dos transectos de 100 m se instalaron estaciones de muestreo cada…
Specific diagnostic tests to detect severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and resulting COVID-19 disease are not always available and take time to obtain results. Routine laboratory markers such as white blood cell count,…
Little is known about possible changes in alcohol consumption distribution during the COVID-19 pandemic. We estimated how individual changes in alcohol consumption during the pandemic translated into changes in: (i) mean consumption; (ii) dispersion…
The potential of Euglossini bees, especially Euglossa, as biological indicators of organic vs non-organic coffee farms was studied in Atenas and San Isidro, Alajuela, Costa Rica using 1.8-cineole as lure. Observations were made for three days at each…
In order to understand the implications of agriculture on the environment, ecosystem health must be measured. Observing the presence of a biological indicator within an ecosystem is one such method. In this study, male euglossine bees were observed…
Commercial fisheries are expanding their activities into deeper water. The life history features of these deep-water resources make them more vulnerable to exploitation than most shallow-water resources. Moreover, the apparent lack of solid…
El trigo es uno de los cereales de mayor importancia en el mundo para el consumo humano y las enfermedades fúngicas y su control representa un gran desafío. Buscando alternativas de control biológico, este experimento se realizó con el objetivo de…
La desertifi cación es un fenómeno complejo y no sólo representa la degradación de algunosecosistemas terrestres. Hoy día, es bien conocido que este proceso se encuentra vinculado tanto aldeterioro ambiental como a factores sociales y económicos,…
El objetivo de este trabajo fue realizar una síntesis ecológica descriptiva regional para el Chocóbiogeográfico colombiano, con base en la detección de las relaciones entre los agentesambientales y las especies de flora y los tipos de vegetación que…