BH: B & H equations for LBB
In polehalieutique/demerstem: This package aims to falicitate Fish stock assessement for west african partners involved in the EU DEMERSTEM project
BH R Documentation
B & H equations for LBB
Description
Exploited B/B0 ratio from B&H equations for variable F
Usage
BH(AllLength, Linf, MK, FK, GausSel, selpar1, selpar2)
Arguments
AllLength
Vector with all lengths
Linf
Asymptotic length
MK
MK ratio
FK
FK ratio
GausSel
Logical; indicating the selectivity pattern. If FALSE (default) trawl-like,
if TRUE gaussian selectivity is assumed.
selpar1
Selectivity parameter 1
selpar2
Selectivity parameter 2
Details
Assuming that observed lengths are the lower bounds of length
classes get lowest exploited (>= 0.01 F) length class and class width.
Value
A list with B/B0 and Y/R
References
R. Froese, H. Winker, G. Coro, N. Demirel, A.C. Tsikliras, D. Dimarchopoulou,
G. Scarcella, W.N. Probst, M. Dureuil, and D. Pauly (2018) A new approach
for estimating stock status from length frequency data. ICES Journal of Marine Science. DOI: 10.1093/icesjms/fsy078
polehalieutique/demerstem documentation built on Aug. 4, 2024, 5:12 a.m.
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| BH | R Documentation |
B & H equations for LBB
Description
Exploited B/B0 ratio from B&H equations for variable F
Usage
BH(AllLength, Linf, MK, FK, GausSel, selpar1, selpar2)
Arguments
AllLength |
Vector with all lengths |
Linf |
Asymptotic length |
MK |
MK ratio |
FK |
FK ratio |
GausSel |
Logical; indicating the selectivity pattern. If FALSE (default) trawl-like, if TRUE gaussian selectivity is assumed. |
selpar1 |
Selectivity parameter 1 |
selpar2 |
Selectivity parameter 2 |
Details
Assuming that observed lengths are the lower bounds of length classes get lowest exploited (>= 0.01 F) length class and class width.
Value
A list with B/B0 and Y/R
References
R. Froese, H. Winker, G. Coro, N. Demirel, A.C. Tsikliras, D. Dimarchopoulou, G. Scarcella, W.N. Probst, M. Dureuil, and D. Pauly (2018) A new approach for estimating stock status from length frequency data. ICES Journal of Marine Science. DOI: 10.1093/icesjms/fsy078
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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