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| Registros recuperados: 34 | |
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| Osorno Arango, A.; Díaz Merlano, J.M.. |
| Exploitation, uses and current status of the West Indian topshell Cittarium pica (Mollusca: Gastropoda, Trochidae) along the Colombian Caribbean coast. The West Indian topshell, Cittarium pica is a common and conspicuous gastropod that thrives in Caribbean intertidal rocky shores and has been used for food by men since pre-Columbian times. Although, the exploitation of this resource is practiced only by artisanal fishermen and mainly for self-consumption, its abundance has noticeably reduced in the last ten years, so the species has been included in the endangered animal lists of several Caribbean countries, including Colombia. The present study was carried out to assess the current status of the population of C. pica along the Colombian Caribbean mainland... |
| Tipo: Journal Contribution |
Palavras-chave: Marine molluscs; Resource conservation; Resource conservation; Http://aims.fao.org/aos/agrovoc/c_6523. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1974 |
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| Mora, E.; Moreno, J.; Jurado, V.; Flores, L.. |
| Un análisis de los principales indicadores pesqueros (CPUE, esfuerzo y talla media de captura) fue realizado en base a información obtenida del seguimiento de la pesquería de la concha prieta durante el año 2009 en los sitios de desembarque más importantes. Los puertos de San Lorenzo y Hualtaco registraron los desembarques más altos (8.8 y 4.8 millones de conchas, respectivamente). Los rendimientos en CPUE oscilaron entre 95 y 122 conchas/conchero/día pesca,mientras que el esfuerzo promedio se encontró entre 38 y 331 concheros/día pesca. El porcentaje de conchas no comerciales fue superior al 45% (A. tuberculosa) y a 35% (A. similis) en cada puerto de desembarque. La condición reproductiva fue muy variable a lo largo del año en relación a los estadios de... |
| Tipo: Journal Contribution |
Palavras-chave: Cockle fisheries; Fishery surveys; Catch/effort; Sexual maturity; Size composition; Resource conservation. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4795 |
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| Bohn, Henning; Deacon, Robert T.. |
| The effect of insecure ownership on ordinary investment and on the exploitation of natural resources is examined. Insecure ownership is characterized as a positive probability that a typical asset or its future return will be confiscated. For empirical analysis, the probability of confiscation is modeled as a function of observable political attributes of countries, principally the type of government regime in power (democratic versus nondemocratic) and the prevalence of political violence or instability. A general index of ownership security is estimated from the political determinants of economy wide investment rates, and then introduced into models of petroleum and forest use. Ownership risk is found to have a significant, and quantitatively important... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Ownership security; Investment; Resource conservation; Resource /Energy Economics and Policy; Q32; Q23; O00. |
| Ano: 1997 |
URL: http://purl.umn.edu/10710 |
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| Registros recuperados: 34 | |
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