during the 17th century, the salt extraction activities gradually went into decline as the locally produced salt was uncompetitive with cheap salt produced in the kama river regions. extensive poaching also led to the significantly reduced outputs from pearl hunting. however, commercial deer herding became more popular, although its share in the economy remained negligible until the 19th century. by the end of the 17th century, the practice of seasonal fishing and hunting settlements in the north of the peninsula became very common.