On the relationship between productivity and food chain length at different ecological levels

The position of a food source represents a possible solution of the issue of optimization, and the quantity of nectar or the productivity of a food source corresponds to the

Abstract: Transepidermal water-loss (TEWL), stratum-corneum hydration (SCH), erythema, elas- ticity, pH and melanin, are parameters of the epidermal barrier function and

The analysis of this ratio over the study period helps to understand the effect of meteorological and hydrological conditions on productivity, and the role of blue (abstracted)

On the other hand at Alalakh Level VII and at Mari, which are the sites in the Semitic world with the closest affinities to Minoan Crete, the language used was Old Babylonian,

Here we can verify what we believe constitutes a paradox: the necessity of con- siderations of an ethical kind is imposed, but from that tradition of Economic Theory whose

Figure 3: Relationship between the response variables (productivity, density and recent population trends of the Bonelli’s eagle) and the predictor environmental variables in the

1) to describe the food webs using carbon and ni- trogen stable isotopes, with emphasis on tempo- ral and habitat variations in the diet of P. clarkii occupies the same trophic

teriza por dos factores, que vienen a determinar la especial responsabilidad que incumbe al Tribunal de Justicia en esta materia: de un lado, la inexistencia, en el