نتایج جستجو برای: per recruit analysis

تعداد نتایج: 3157648  

The purpose of this paper was to detail some important biological aspects of T. tonggol in coastal waters of Hormuzgan Province(Persian Gulf and Oman Sea). A total monthly data of 4383 individuals ranging from 25 to 124 cm fork length were collected from April 2015 to March 2016. The data were analyzed with FiSAT II software using the ELEFAN1  package  to estimate the  population parameters. Th...

Journal: :international journal of aquatic biology 0
lotfi bensahla talet university of oran1 ahmed benbella ahmed bensahla talet university of oran1 ahmed benbella zitouni boutiba university of oran1 ahmed benbella

population dynamic parameters of red mullet, mullus barbatus (n=592) caught by trawlers operating in arzew gulf (algeria) in the western mediterranean were studied. samples were collected between february 2013 and january 2014. females ranged from 10.9-23.2 cm in total length and 12-149.2 g in weight whereas males length was comprised between 12.6 and 19.7 cm and weight between 21.3 and 99.9 g....

2002
Suzanne H. Alonzo Marc Mangel

Abstrac t— Predicting and understanding the dynamics of a population requires knowledge of vital rates such as survival, growth, and reproduction. However, these variables are inf luenced by individual behavior, and when managing exploited populations, it is now generally realized that knowledge of a species’ behavior and life history strategies is required. However, predicting and understandin...

Journal: :Fish and Fisheries 2021

The Beverton–Holt and Ricker stock-recruit functions were derived in terms of two pre-recruit mortality parameters. Mace, & Doonan, (1988, A generalized bioeconomic simulation model for fish population dynamics) reparameterized the function steepness, which combines with post-recruit biological parameters defining unfished spawning biomass per recruit. Their parameterization explicitly assumes ...

Objectives Time use patterns affect humans’ health and quality of life. Different social contexts such as gender roles impact on time use patterns in each society. The purpose of this article is to examine gender differences in time use patterns of Iranian older adults. Methods & Materials The method of this study is the secondary analysis of the Iranian time use national survey data. A multis...

Journal: :Ecological applications : a publication of the Ecological Society of America 2006
David M Kaplan Louis W Botsford Salvador Jorgensen

Marine reserves are an increasingly important tool for the management of marine ecosystems around the world. However, the effects of proposed marine reserve configurations on sustainability and yield of populations are typically not estimated because of the computational intensity of direct simulation and uncertainty in larval dispersal and density-dependent recruitment. Here we develop a metho...

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