Growth, mortality, exploitation rate, and recruitment of Anadara granosa cockle in Rangsang Barat coastal waters were studied from July to October 2019. The objective this research was study growth. mortality. rate A cockle. Sampling done monthly at three main stations. collected plot 1 x m2 on quadrat transect. result showed that the asymptotic length (L∞) P. acutidens 30.45 mm. annual growth ...

The comprehensive treatment project of groundwater over-exploitation in Hebei Province has been implemented for more than a year, and the effect of exploitation restriction is in urgent need of evaluation. This paper deals with Cheng'an County of Hebei Province as the research subject. Based on collected hydro-meteorological, socioeconomic, groundwater, and other related data, together with typ...

The population parameters of Encrasicholina punctifer (Buccaneer anchovy) from commercial fishery in the Persian Gulf and Oman Sea coastal waters were studied from October 2014 to September 2015. A total of 13951 length-frequency data collected monthly by pair-boat purse seine and beach seine methods. The asymptotic length (L∞) and Von Bertalanffy growth function (K) were 11.5 cm and K = 1.4 pe...

rangelands are known as one of the main income resources for their exploiters.in the recent century, management of iran rangeland has undergone vast transformationsbecause of vulnerable socio-economic conditions of pastoralists. a study was done toprovide a clear picture of the status and utilization of aq qala rangelands via assessinginternal and external environmental factors affecting the ut...

The extinction of some of medical plants is not only due to the overuse of them and the grazing pressure but also their incorrect exploitation methods. Ferula assafoetida is one of the most important medical plants in Iranian rangelands, which is gradually disappeared from its habitats due to destructive traditional exploitations. Therefore, in order to determine how different incision techniqu...

It has been a well-known fact that genetic algorithms (GAs) get part of their success from the efficient exploration/exploitation balance. This equilibrium is related to the population diversity decreasing rate. This rate is not the same for all GAs, but it depends on the reproductive cycle being used. In particular, steady-state (μ+1)-GAs (ssGA) have a larger convergence rate than traditional ...