scholarly journals Impact of entrainment and impingement on fish populations in the Hudson River Estuary. Volume II. Impingement impact analyses, evaluations of alternative screening devices, and critiques of utility testimony relating to density-dependent growth, the age-composition of the striped bass spawning stock, and the LMS real-time life cycle model

1982 ◽  
Author(s):  
L. W. Barnthouse ◽  
W. Van Winkle ◽  
J. Golumbek ◽  
G. F. Cada ◽  
C. P. Goodyear ◽  
...  
Keyword(s):  
Life Cycle ◽  
River Estuary ◽  
Hudson River ◽  
Fish Populations ◽  
Hudson River Estuary ◽  
Life Cycle Model ◽  
Cycle Model ◽  
Age Composition ◽  
Spawning Stock ◽  
Dependent Growth

scholarly journals When will the eel recover? A full life-cycle model

2007 ◽  
Vol 64 (7) ◽  
pp. 1491-1498 ◽  
Author(s):  
Mårten Åström ◽  
Willem Dekker
Keyword(s):  
Life Cycle ◽  
Distribution Area ◽  
European Eel ◽  
Life Cycle Model ◽  
Cycle Model ◽  
Glass Eel ◽  
Full Life Cycle ◽  
Long Run ◽  
Spawning Stock ◽  
Full Life

Abstract Åström M., and Dekker W. 2007. When will the eel recover? A full life-cycle model. – ICES Journal of Marine Science, 64: 000–000: –. The European eel population has declined over the past decades in most of its distribution area, and the stock is outside safe biological limits. The EU has taken up the challenge to design a management system that ensures the escapement of 40% of spawning-stock biomass, relative to unexploited, unpolluted circumstances in unobstructed rivers. This ultimately aims to restore the spawning stock to a level at which glass eel production is not impaired, i.e. to restore to full historical glass eel recruitment. To explore the trajectory from the current depleted state to full recruitment recovery, we developed a simple model of stock dynamics, based on a simplified stock–recruitment relationship and the conventional dynamic pool assumptions. Recruitment trajectories under different future fishery regimes are explored, for the medium (one generation time) and long time-span (until full recruitment recovery). Reducing fisheries to zero, recovery is expected within ∼80 years, whereas under an ultimately sustainable fishing regime of just 10% of the current rate of fishing mortality, recovery may take more than 200 years. Moreover, management regimes, apparently leading to slight recovery of the stock in the coming 5–15 years, might still be unsustainable in the long run.

Accumulation of muds and metals in the Hudson River estuary turbidity maximum

1998 ◽  
Vol 34 (2-3) ◽  
pp. 214-222 ◽  
Author(s):  
M. G. Menon ◽  
R. J. Gibbs ◽  
A. Phillips
Keyword(s):  
River Estuary ◽  
Hudson River ◽  
Turbidity Maximum ◽  
Hudson River Estuary

Company life cycle model: The influence of interior and exterior factors

2020 ◽  
Author(s):  
Oleg Malafeyev ◽  
Irina Zaitseva ◽  
Sergey Sychev ◽  
Gennady Badin ◽  
Ilya Pavlov ◽  
...  
Keyword(s):  
Life Cycle ◽  
Life Cycle Model ◽  
Cycle Model

A Life-Cycle Model for Career Teachers

2001 ◽  
Vol 38 (1) ◽  
pp. 16-19 ◽  
Author(s):  
Betty E. Steffy ◽  
Michael P. Wolfe
Keyword(s):  
Life Cycle ◽  
Life Cycle Model ◽  
Cycle Model ◽  
Career Teachers
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