نتایج جستجو برای: fishing and hunting
تعداد نتایج: 16831426 فیلتر نتایج به سال:
In spite of its common use as a tool for examining cooperation, the prisoner’s dilemma game does not conform to the reality of many socio-ecological contexts. Situations in which people engage in joint activities and maintain agreement in their preferences for outcomes are called “coordination games” by game theorists and “mutualism” by biologists. Coordination games are common, but cooperative...
Today, fishing is the only large-scale wildlife hunting activity. Unsurprisingly, it has contributed to the depletion and extirpation of numerous marine fish populations. We develop a fuzzy logic expert system to estimate the risk of depletion of marine fish populations from fishing. The frrst component of this expert system predicts the intrinsic vulnerability of marine fishes (i.e., fishes' i...
Executive Summary Introduction Recreational fishing represents a popular and highly valued use of marine resources, with participation by a large percentage of the U.S. population. Nonetheless, many recreational fisheries, including a number of fisheries in the Gulf of Mexico (GOM) recreational reef fish complex, show trends towards shorter seasons, smaller bag limits and more restrictive size ...
In the midst of several management failures, marine reserves are seen as a potential management tool to control overexploitation. In the literature, both modelling and empirical work have demonstrated that closing an area to fishing would lead to an increase in biomass and mean body size within the reserve. Benefits, in the form of increased catch, outside the reserves are sometimes shown using...
Hunting was one of the most important aspects of human life in ancient times; when human considered hunting as an aspect of his own subsistence strategy and his life was dependant on it. As time goes by, the importance of this subsistence aspect reduces; so that special places were considered as a hunting ground for entertainment. With the arrival of Islam in Iran, this process continued ...
In the late of the Qajar era, a Persianized Iranian royal family of Azerbaijani Turkic origin which ruled Persia from 1785 to 1925, the Isfahan carpet design was revived by some of the artists such as Mirza Aqa Emami and Mohammad Hossein Mosavver Al-Molki. One of the leading artists in the late of the Qajar period and the early of the next period, Mohammad Hossein Mosavver Al-Molki, known as Ha...
This paper lays the groundwork for a theory of time allocation across the life course, based on the idea that strength and skill vary as a function of age, and that return rates for different activities vary as a function of the combination of strength and skills involved in performing those tasks. We apply the model to traditional human subsistence patterns. The model predicts that young child...
Eastern Siberia’s Lake Baikal and its tributaries are productive fisheries, and the region’s Holocene archaeological sites confirm that this is a long-standing phenomenon. Recent zooarchaeological investigations of sites here allow Holocene fishing practices to be examined in more detail than was previously possible. Along much of the lake’s coast, bathymetry is very steep and the water very co...
Empirical tests of resource-intensification models argue for diminishing foraging efficiency among hunter–gatherers in California over the past 2000 years (Basgall, 1987, Research in Economic Anthropology 9, 21–52; Broughton, 1994a, Journal of Archaeological Science 21, 501–514; 1994b, Journal of Anthropological Anthropology 13, 371–401). The evidence for this long-term trajectory consists of d...
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