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In the understanding of the world economy, production factors are natural resources, capital, labour, undertaking and information. Availability and quality of the production factors in time is limited in proportion to the needs, consequently rational and efficient use of production factors play a significant role. The aim of the research is to reflect the availability and quality of the production factors in the Latvian fisheries sector. On the grounds of the methodology offered by the author and guiding by the av...

Fishing opportunities of Latvia are based on the long-term research of environment and fish resources at national and international level. Environmental pollution, unfavourable spawning conditions as well as intensive fishing and other factors have negative influence upon the state of the fish stocks. As a result of stock fluctuation and changes in fishing quotas allocated annually at the EU level, Latvian fishery companies have difficulties to plan their future activities; consequently, increasing attention is be...

Phenology is a study of timing of event taking place in nature. In a functional ecosystem phenological phases for mutually dependent are synchronized. In a rapidly changing climate there is a risk of decoupling, that is spring development of interdependent could species proceed at different peace. We are investigating the likely timing of spring phenological phases during the last and upcoming centuries for two tree species common in northern and central Europe: bird cherry (Prunus padus known also as Padus racemo...