Phitotoxicity of Crhomium over Phaseolus vulgaris L.

p.75-80

Preliminary studies on the effect of the increased biodiversity on the population dynamics of Caliroa cerasi L. (Hymenoptera: Tenthredinidae), and its natural enemy Trichogramma minutum R. (Hymenoptera: Trichogrammatidae) in a sweet cherry (Prunus avium L.) orchard in Virch (Southern Patagonia Argentina)

p.25-36

Current scenario of scientific publications related to weeds in Argentina : comparison with some countries of America

p.131-140

Ecosystem services : a travel through natural benefits

p.49-60

Nota de presentación

p.vii-viii

Variability in water and nitrogen availability at plot scale and its effect on Maize (Zea Mays L.) production

p.21-30

The forage supply service in the Chaco native forest : an approach to economic analysis

p.37-45

Economic theory and environmental sciences, a historic review : from physiocrats to institutionalists

p.57-70

Problemas de secundaria y los nietos juegan (Problemas Comentados XXXIII)

Se presentan, como siempre, las soluciones a problemas planteados en anteriores artículos siguiendo las fases: comprender (datos, objetivos, relaciones, representación), pensar (estrategias posibles), ejecutar (las estrategias) y responder (comprobando los resultados, analizando la solución y respondiendo adecuadamente). Asimismo se presentan otros nuevos, bajo el vínculo de "Problemas de los abuelos" relacionados con algunos juegos cuyas reglas se exponen. Los fundamentos de estos juegos son: solitario con cartas, cuatro en raya, Nim y minas.

Replacing failed private water contracts

Failed private water concessions have been terminated and replaced with public sector operations in many countries. The paper reviews the negotiating processes involved in these terminations.

Global experience with electricity liberalisation

This paper examines global experiences with electricity liberalisation relevant to the new legislation on electricity passed by the Indonesian parliament in September 2009. It covers experiences in the UK, EU, USA and ten major developing economies. Finally, the paper comments on a number of the issues emerging from this survey, in particular the reliance on public finance for extensions to electricity networks, the advantages of public finance for cheaper capital and for developing renewables, and the comparative evidence on efficiency.

A review of some common Indo-Malayan and western Pacific species of Chthamalus barnacles (Crustacea: Cirripedia)

The type specimens of the common tropical intertidal barnacles Chthamalus malayensis and C. moro, were re-investigated and compared with other specimens of Chthamalus from the Indian Ocean, Indo-Malaya, northern Australia, Vietnam, China and the western Pacific, using ‘arthropodal’ as well as shell characters. Chthamalus malayensis occurs widely in Indo-Malayan and tropical Australian waters. It ranges westwards in the Indian Ocean to East Africa and northwards in the Pacific to Vietnam, China and the Ryukyu Islands. Chthamalus malayensis has the arthropodal characters attributed to it by Pope (1965); conical spines on cirrus 1 and serrate setae with basal guards on cirrus 2. Chthamalus moro is currently fully validated only for the Philippines, Indonesia, Taiwan, the Xisha (Paracel) Islands, the Ryukyu Islands, the Mariana Islands, the Caroline Islands, Fiji and Samoa. It is a small species of the ‘challengeri’ subgroup, lacking conical spines on cirrus 1 and bearing pectinate setae without basal guards on cirrus 2. It may be a ‘relict’ insular species. Chthamalus challengeri also lacks conical spines on cirrus 1 and has pectinate setae without basal guards on cirrus 2. Records of C. challengeri south of Japan are probably erroneous. However, there is an undescribed species of the ‘challengeri’ subgroup in the Indian Ocean, Indo-Malaya, Vietnam and southern China and yet more may occur in the western Pacific. The subgroups ‘malayensis’ and ‘challengeri’ require genetic investigation. Some comments are included on the arthropodal characters and geographical distributions of Chthamalus antennatus, C. dalli and C. stellatus

Algunas especies interesantes de la depresión de Padul (Granada)

Se comentan brevemente 16 especies interesantes desde el punto de vista ecológico y biogeográfico, herborizadas en la depresión de Padul (Granada).

Estudio fitosociológico de los sabinares de Juniperus phoenicea L. en el sector Malacitano-Almijarense (provincia corológica Bética)

Se describe una nueva asociación (Rhamno myrtifoli-Juniperetum phoeniceae) de la alianza Rhamno-Quercion cocciferae distribuida en el sector Malacitano-Almijarense (provincia corológica Bética).

Discovering keys to explain social policies within the social and democratic rule-of-law sate

There is a collective worldview on social policies that is expressed and understood by university professionals. However, it takes students time to construct this knowledge. Here, we provide fundamental ideas and a dynamic to facilitate learning of social policies. The preparation of a brief dictionary of significant terms is to be constructed as a group, alongside the maieutic work to be carried out by the teacher. The goal is to discover keys to understand the meaning of social policies and the underlying values that sustain a social and democratic rule-of-law state such as the one proposed in the Spanish Constitution of 1978. Attention is focused on the structure of the mixed welfare state. This is an integral proposal and comprises three dimensions. First, it considers the state and its possible welfare agents: business, market, the Church and civil society. The attitudes with which universal and inclusive social action is promoted, breaking radically with the aid-based meaning contained in other systems, are then addressed. Finally, we examine human dignity as a principle and aim of intervention, a basis for understanding other concepts such as human, social, labour and political rights. It is to be hoped that these pages prove useful for both teaching staff and students.