Abstract

A method for rapid quantification of escapement of Pacific salmon spawners into the Kamchatka River catchment basin and the mathematical models for assessment of Pacific salmon spawners, escapement through a river cross section have been developed based on data from the integrated monitoring of their escapement dynamics including aerial observations, hydroacoustic surveys, and test drift-net sampling, as well as using data on the biological characteristics of spawners. These data allowed retrospective qualitative and quantitative assessment of levels of escapement of sockeye, chum, and coho salmon spawners to their spawning grounds; the current fishing efficiency in the river was evaluated. The escapement of sockeye salmon has been evaluated as being at the level of its medium reproduction success. To achieve the conditions that would provide the highest level of reproduction of Kamchatka sockeye salmon populations, the regulation of fishing should focus on a reference level of approximately 850 000 spawners. This level is achievable in case of the systematic overcrowding of the existing reproduction centers and the involvement of the populations that previously lost their importance in the process. The level of escapement of chum and coho salmon spawners in the study period can be evaluated as medium and high. A method of test Chinook salmon catches to obtain a general estimate of escapement of this species prior to the beginning of the fishing season has been developed and implemented.

中文翻译：

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实时监测太平洋鲑鱼养殖场向堪察加河的逃逸情况

摘要

根据对它们的逃逸动力学进行综合监测的数据，开发了一种快速量化进入鲑鱼产卵场到堪察加河集水盆地的逃逸方法和评估太平洋鲑鱼产卵，通过河流横截面逃逸的数学模型。观测，水声调查和测试流网采样，以及使用有关产卵器生物学特性的数据。这些数据可以回顾性定性和定量评估红鲑，密友和银大麻哈鱼产卵场产卵场的逃逸水平。目前对河中的捕鱼效率进行了评估。红鲑鱼的逃逸已被评估为中等繁殖成功水平。为了达到使堪察加红鲑鲑种群最高繁殖水平的条件，捕捞法规应集中在大约850 000产卵场的参考水平上。如果现有生殖中心系统性地人满为患，并且以前在该过程中失去重要性的人们的参与，这一水平是可以实现的。在研究期间，鲑鱼和银大麻哈鱼产卵器的逃逸水平可评估为中等和较高。已经开发并实施了一种测试契努克鲑鱼捕获量的方法，以便在捕鱼季节开始之前获得该物种逃逸的总体估计。捕捞法规应侧重于大约850 000个产卵场的参考水平。如果现有生殖中心系统性地人满为患，并且以前在该过程中失去重要性的人们的参与，则可以达到这一水平。在研究期间，鲑鱼和银大麻哈鱼产卵器的逃逸水平可评估为中等和较高。已经开发并实施了一种测试奇努克鲑鱼捕获量的方法，以便在捕鱼季节开始之前获得该物种逃逸的总体估计。捕捞法规应侧重于大约850 000个产卵场的参考水平。如果现有生殖中心系统性地人满为患，并且以前在该过程中失去重要性的人们的参与，则可以达到这一水平。在研究期间，鲑鱼和银大麻哈鱼产卵器的逃逸水平可评估为中等和较高。已经开发并实施了一种测试奇努克鲑鱼捕获量的方法，以便在捕鱼季节开始之前获得该物种逃逸的总体估计。在研究期间，鲑鱼和银大麻哈鱼产卵器的逃逸水平可评估为中等和较高。已经开发并实施了一种测试奇努克鲑鱼捕获量的方法，以便在捕鱼季节开始之前获得该物种逃逸的总体估计。在研究期间，鲑鱼和银大麻哈鱼产卵器的逃逸水平可评估为中等和较高。已经开发并实施了一种测试奇努克鲑鱼捕获量的方法，以便在捕鱼季节开始之前获得该物种逃逸的总体估计。