標(biāo)題: Titlebook: On the Dynamics of Exploited Fish Populations; Raymond J. H. Beverton,Sidney J. Holt Book 1993 Springer Science+Business Media Dordrecht 1 [打印本頁(yè)] 作者: 怕跛行他有限 時(shí)間: 2025-3-21 16:46
書(shū)目名稱On the Dynamics of Exploited Fish Populations影響因子(影響力)
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書(shū)目名稱On the Dynamics of Exploited Fish Populations讀者反饋
書(shū)目名稱On the Dynamics of Exploited Fish Populations讀者反饋學(xué)科排名
作者: 包庇 時(shí)間: 2025-3-21 20:33 作者: ordain 時(shí)間: 2025-3-22 03:44 作者: idiopathic 時(shí)間: 2025-3-22 08:20
Estimation of the Total Mortality Coefficient (, + ,), and the Maximum Age, ,,e of adjacent age-groups in a sample, depending on the type of data available. Certain conditions must be satisfied, apart from adequate sampling, for this direct method to give true estimates, and it may be worth while to review briefly the theory underlying the determination of total mortality rates.作者: Fortuitous 時(shí)間: 2025-3-22 10:47
Principles and Methods of Fishery Regulationat increasing the size of mesh could also improve the state of these fisheries; in fact, we concluded in §17.6 that to obtain the best yields from the plaice, changes in both fishing intensity and mesh size would be necessary, and none of our findings in §18 has shown this to be false.作者: cyanosis 時(shí)間: 2025-3-22 13:20
2542-890X abitats of lakes, ponds, rivers, rock pools and the open sea, fish have solved the problems of life in deserts, in the deep sea, in the cold antarctic, and in warm waters of high alkalinity or of low oxygen. Along with these adaptations, we find the most impressive specializations of morphology, phy作者: characteristic 時(shí)間: 2025-3-22 19:44 作者: fender 時(shí)間: 2025-3-23 01:00 作者: 鈍劍 時(shí)間: 2025-3-23 04:46
Adaptation of the Simple Model to Give Other Characteristics of the Catch and Population and mean age of fish in the catch, which are directly estimated from samples. To establish the equations giving the above characteristics we use the same definitions and assumptions as in the previous section, and it will be seen that the same general methods are applicable.作者: 過(guò)多 時(shí)間: 2025-3-23 07:15 作者: Stress-Fracture 時(shí)間: 2025-3-23 12:44
The Basis of a Theoretical Model of an Exploited Fish Population and the Definition of the Primary Frs in §17.8, but Russell’s paper gives an exposition of the fundamentals of the problem in the form most convenient to take as a starting point for the development of our theoretical population models.作者: Lime石灰 時(shí)間: 2025-3-23 16:55 作者: intuition 時(shí)間: 2025-3-23 18:19
Growth and Feedingh (i.e. in the pattern of variation of weight with age) with age itself (§9.2), among the individuals comprising a given year-class (§9.3) and with population density and the supply of food (§9.4). We shall represent these variations by appropriate changes in the values of the parameters of the von Bertalanffy growth equation.作者: 摘要 時(shí)間: 2025-3-24 01:22
Application of Population Models of Part Iefficient work-sheet. For example, the summation term from . = 0 to 3 which appears in all equations involving the weight of fish, is almost certain to lead to computational errors and much loss of time if some orderly procedure is not adopted.作者: 預(yù)測(cè) 時(shí)間: 2025-3-24 04:06
Application of Population Models of Part II be possible to see at once whether any profound changes in the other characteristics of commercial importance, . and ., are involved. Where this is found to be the case the matter is dealt with more fully.作者: Anthem 時(shí)間: 2025-3-24 08:17
Book 1993 lakes, ponds, rivers, rock pools and the open sea, fish have solved the problems of life in deserts, in the deep sea, in the cold antarctic, and in warm waters of high alkalinity or of low oxygen. Along with these adaptations, we find the most impressive specializations of morphology, physiology an作者: 整潔 時(shí)間: 2025-3-24 14:42
978-94-010-4934-4Springer Science+Business Media Dordrecht 1993作者: Ccu106 時(shí)間: 2025-3-24 15:36
On the Dynamics of Exploited Fish Populations978-94-011-2106-4Series ISSN 2542-890X Series E-ISSN 2542-8926 作者: Esophagitis 時(shí)間: 2025-3-24 20:43 作者: BILL 時(shí)間: 2025-3-25 00:35
https://doi.org/10.1007/978-94-011-2106-4Adaptation; fish; fishing; growth; ecotoxicology作者: doxazosin 時(shí)間: 2025-3-25 04:01
A Simple Model Giving the Annual Yield in Weight from a Fishery in a Steady StateMaking use of the mathematical formulations given in the previous section we can now construct an analytical population model which eliminates the direct component of interdependence between the four primary factors.作者: 濃縮 時(shí)間: 2025-3-25 10:23
Recruitment and Egg-ProductionWe shall discuss the determination of recruitment parameters in two stages, dealing first with recruitment as a function of age (§15.1), and secondly with the estimation of the numbers of fish recruited each year and the relationship between them and the abundance and structure of the mature population from which they originated (§15.2).作者: genuine 時(shí)間: 2025-3-25 13:25
2542-890X s reviewing important aspects of fish biology. Most volumes will be of interest to research workers in biology, zoology, ecology and physiology but an additiona978-94-010-4934-4978-94-011-2106-4Series ISSN 2542-890X Series E-ISSN 2542-8926 作者: unstable-angina 時(shí)間: 2025-3-25 19:24
Raymond J. H. Beverton,Sidney J. Holtic and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust978-1-4899-8156-1978-1-4419-7384-9作者: demote 時(shí)間: 2025-3-25 20:18 作者: 本能 時(shí)間: 2025-3-26 04:05 作者: iodides 時(shí)間: 2025-3-26 07:39 作者: Genteel 時(shí)間: 2025-3-26 11:43
Raymond J. H. Beverton,Sidney J. Holtic and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust978-1-4899-8156-1978-1-4419-7384-9作者: DNR215 時(shí)間: 2025-3-26 13:36 作者: 誹謗 時(shí)間: 2025-3-26 18:28 作者: 逗留 時(shí)間: 2025-3-26 23:09
Raymond J. H. Beverton,Sidney J. Holtic and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust978-1-4899-8156-1978-1-4419-7384-9作者: Obligatory 時(shí)間: 2025-3-27 03:49 作者: 用肘 時(shí)間: 2025-3-27 05:54 作者: 揉雜 時(shí)間: 2025-3-27 11:37
Growth and Feedingy, in §16.4, we consider the question of the relationship between growth, population density and food consumption, dealing first with observed changes in growth and corresponding changes in density of the plaice and haddock (§16.4.1). In §16.4.2, physiological data on growth in plaice are analysed t作者: 小蟲(chóng) 時(shí)間: 2025-3-27 15:00
Book 1993s must rely upon a detailed and precise insight of their biology. The Chapman & Hall Fish and Fisheries Series aims to present timely volumes reviewing important aspects of fish biology. Most volumes will be of interest to research workers in biology, zoology, ecology and physiology but an additiona作者: kindred 時(shí)間: 2025-3-27 20:38 作者: Alopecia-Areata 時(shí)間: 2025-3-28 01:13 作者: hallow 時(shí)間: 2025-3-28 05:43
Raymond J. H. Beverton,Sidney J. Holted healthcare, rescue operation planning, etc. This book’s coverage will span all scientific and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust作者: Polydipsia 時(shí)間: 2025-3-28 07:02 作者: 平常 時(shí)間: 2025-3-28 13:07
Raymond J. H. Beverton,Sidney J. Holted healthcare, rescue operation planning, etc. This book’s coverage will span all scientific and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust作者: 前兆 時(shí)間: 2025-3-28 17:13
Raymond J. H. Beverton,Sidney J. Holted healthcare, rescue operation planning, etc. This book’s coverage will span all scientific and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust作者: 手榴彈 時(shí)間: 2025-3-28 20:42
Raymond J. H. Beverton,Sidney J. Holted healthcare, rescue operation planning, etc. This book’s coverage will span all scientific and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust作者: paragon 時(shí)間: 2025-3-29 01:43
Raymond J. H. Beverton,Sidney J. Holted healthcare, rescue operation planning, etc. This book’s coverage will span all scientific and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust作者: 忘川河 時(shí)間: 2025-3-29 06:09 作者: 情感 時(shí)間: 2025-3-29 08:38 作者: PLIC 時(shí)間: 2025-3-29 13:43 作者: intelligible 時(shí)間: 2025-3-29 19:19
Raymond J. H. Beverton,Sidney J. Holted healthcare, rescue operation planning, etc. This book’s coverage will span all scientific and technological areas that define wearable monitoring systems, including sensors, signal processing, energy, system integration, communications, and user interfaces. Six case studies will be used to illust作者: 慟哭 時(shí)間: 2025-3-29 21:39 作者: Contort 時(shí)間: 2025-3-30 00:22 作者: fender 時(shí)間: 2025-3-30 04:57 作者: 顯示 時(shí)間: 2025-3-30 08:57
Adaptation of the Simple Model to Give Other Characteristics of the Catch and Populationonomic aspect it is necessary to know the catch per unit effort, and, probably, the mean weight of fish in the catch, while the analysis of situations in which factors such as natural mortality and growth vary with the population density (discussed in Part II of this paper) requires expressions givi作者: 非實(shí)體 時(shí)間: 2025-3-30 15:59 作者: 健忘癥 時(shí)間: 2025-3-30 19:02
Natural Mortalitythe scarcity of information relating to the causes of natural death in adult marine fish. Predation is perhaps the most general ‘external’ cause, and the evidence has been reviewed by Errington (1946). The majority of recorded instances of predation refer to lake or river fish, but even here, direct作者: 影響帶來(lái) 時(shí)間: 2025-3-30 23:41 作者: pancreas 時(shí)間: 2025-3-31 02:04
Growth and Feedingattern defined by a mathematical expression the parameters of which have constant values. In this section we are concerned with the variation of growth (i.e. in the pattern of variation of weight with age) with age itself (§9.2), among the individuals comprising a given year-class (§9.3) and with po作者: 驚呼 時(shí)間: 2025-3-31 05:07 作者: 方便 時(shí)間: 2025-3-31 10:25 作者: 干涉 時(shí)間: 2025-3-31 14:46
Relative Fishing Power of Vessels and Standardisation of Commercial Statistics of Fishing Effortrequisite for the estimation of mortality coefficients from age-composition data and from marking experiments in all but the simplest cases, and is an essential part of the methods described in §14.3 for obtaining separate estimates of the fishing and natural mortality coefficients. When using data 作者: 一再煩擾 時(shí)間: 2025-3-31 21:04
Estimation of the Total Mortality Coefficient (, + ,), and the Maximum Age, ,,ained by many authors from data of the abundance, either relative or absolute, of different age-groups. The method used has usually been the direct one of obtaining either the ratio of the abundance or total catch of a year-class during successive years of life, or the ratio of the relative abundanc作者: 斥責(zé) 時(shí)間: 2025-3-31 22:59
Separate Estimation of Fishing and Natural Mortality Coefficientsortality coefficients. As we have mentioned in the previous section, the detailed analysis of mortality requires certain information in addition to that obtained from age-composition data, and we have found it convenient to classify the methods of the present section according to the type of this ad作者: 遺忘 時(shí)間: 2025-4-1 03:41 作者: 影響深遠(yuǎn) 時(shí)間: 2025-4-1 09:47
Application of Population Models of Part Ipresent certain difficulties, and the following comments may be helpful. The first need, from the point of view of both speed and accuracy, is for an efficient work-sheet. For example, the summation term from . = 0 to 3 which appears in all equations involving the weight of fish, is almost certain t作者: 殘廢的火焰 時(shí)間: 2025-4-1 10:42
Application of Population Models of Part IIfor the most part, to study the annual mean yield per recruit, ..., as a function of . and .. (or mesh size in some cases), since it will then usually be possible to see at once whether any profound changes in the other characteristics of commercial importance, . and ., are involved. Where this is f作者: 生意行為 時(shí)間: 2025-4-1 17:16
Principles and Methods of Fishery Regulationsing this word in the general sense adopted by Graham (1951a) to mean simply ‘too much fishing’. One possible form of regulation therefore seems self-evident, namely to reduce the fishing mortality coefficient in the population by decreasing the fishing intensity. On the other hand, we have shown th作者: DALLY 時(shí)間: 2025-4-1 21:50
offering higher levels of effectiveness, communication and personal freedom. The key common part to all potential solutions fulfilling these requirements is wearable embedded systems, with longer periods of autonomy, offering wider functionality, more communication possibilities and increased compu作者: 密切關(guān)系 時(shí)間: 2025-4-1 22:59
