Edge effect on bird nest predation in the fragmented caldén (Prosopis caldenia) forest of central Argentina: an experimental analysis

Clearing of caldén (Prosopis caldenia) forests for agriculture and cattle raising in east-central La Pampa Province, central Argentina, has created a highly fragmented landscape, a condition that has resulted in adverse effects on birds in other forests, mainly through increased predation rates near forest edges. We evaluated bird nest predation rates using artificial nests, assessing the effects of forest fragment size, distance to the edge and nest height. We measured survival rate of 570 artificial nests located in trees, in bushes and on the ground, at different distances from the edge, in six forest fragments ranging in size from 2.1 to 117.6 ha, during two consecutive breeding seasons. Nest predation rates were significantly related with the number of days of exposition of the nest, nest height and distance to the edge, whereas fragment size and year of the experiment were not associated with predation rates. Ground nests were less likely to be predated than those located in bushes and trees. Predation rates decreased with the distance to the edge, showing a pattern consistent with the existence of an edge effect.Fil: Sosa, Ramón Alberto. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Recursos Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lopez de Casenave, Javier Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentin

In between the market and public health insurance: a place for occupational welfare in Europe?

International audienceThere is a growing body of studies emphasising the multi-pillar configuration of protection against social risk in Europe, particularly in pension reform. In this chapter, we try to expand on this literature to find applicability beyond the sole case of pensions by looking at the case of occupational health insurance in France. In order to do so, we present a restatement of the pillar/provision perspective in order to apply it to a broader range of cases. We argue it is a powerful analytical tool provided it is complemented with a (non-exhaustive) list of perspectives widely used in studies on social policy and does not blunder into the pitfall of functionalism. The chapter focuses on crossing the pillar perspective with a finance and also a regime perspective. Following the seminal intuition of R. Titmuss, an important result yielded is that the overall structure of resources distribution of the whole welfare system can become highly anti-redistributive once occupational schemes and fiscal incentives are included in the analysis