Abejas Electrónicas

Not only is climate change causing problems for trees, human interventions are also threatening forests ... Peter Wohlleben speaks out for trees: it is time to stop the ruthless overexploitation of forests.

In recent years, due to expanding populations and industries, regulatory authorities have imposed tighter discharge limits on nutrients from wastewater treatment facilities to avoid eutrophication in water streams. Common methods, such as metal salt precipitation, are being used to lower phosphorus concentrations which are a main contribution. However, alternate phosphorus removal techniques, such as phosphorus crystallisation, can provide further benefits. Precipitated solid can be utilised as a marketable fertiliser. Principles of magnesium and ammonia phosphate precipitation, working with...

La declaración de los Derechos de la Naturaleza en la Constitución ecuatoriana, es uno de los mecanismos más importantes para la protección de las ballenas y la defensa de los Derechos del Mar, que debe ser utilizado frente a las nuevas amenazas como las que plantearían las nuevas exploraciones en búsqueda de yacimientos hidrocarburíferos y minerales que se pretende realizar en el mar y la posible construcción del Complejo Refinador y Petroquímico del Pacífico.

The FAO Yearbook of Fishery and Aquaculture Statistics contains all the most updated data on capture production, aquaculture production and commodities. In this new presentation, the complete yearbook package for each of these categories - all the key information and statistical tables - are contained on one CD-ROM, inserted in a booklet that includes general notes, concepts and classifications, and summary tables as well as a pull-out map of FAO major fishing areas. . From the CD-ROM, you can download, consult, share and store all the data previously provided in print only. This volume...