Abstract North American fisheries management agencies commit considerable resources to managing reservoir for Channel Catfish Ictalurus punctatus , which often includes stocking. However, population characteristics vary greatly among reservoirs, resulting in variable and unpredictable fishery quality. We sampled populations 44 Ohio reservoirs with tandem, baited hoop nets understand relationshi...

Since the reform and opening-up, population migration has become increasingly active, which not only meets demand of labor shortage in inflow areas, but also drives employment outflow areas. Population focus market research. Therefore, it is great significance to accurately judge grasp changes characteristics migration. Based on relevant economic theories models migration, this paper analyzes C...

If socio-legal research has taught us anything, it is that legal coercion is expensive and difficult. Law can rarely hope to be meaningful and effective without the cooperation, indeed the normative accord, of the vast majority of populations it hopes to control. Thus after years of researching the behavior of regulatory agencies, regulatory scholars increasingly have turned their attention to ...

Aim of study: Monitoring trends in animal populations is essential for the development of appropriate wildlife management strategies. Area of study: The area is situated in the southern Pyrenees (Aragon), Spain. Material and methods: To measure the abundance, population trends, sex ratio, and mortality of roe deer populations, we analyzed data from i) driven hunts for wild boar (hunting seasons...

I investigate the robust predictions of a theory on the costs and benefits of dealing with increased numbers of choices in an election context. My data consist of a rich array of measures of voting behaviors and corresponding ballot and voter population characteristics for a panel of electoral districts from three Australian federal election cycles. I examine how the number of candidates and vo...