GILLNETPERHITUNGAN SELEKTIFITAS GILLNET

XCaCby= ln (cb/ca)Sa(L)=eks(-(L-Lma)^2/ (2*s2))Sb(L)= eks (-(L-Lmb)^2/ (2*s2))Na(L)= Ca/ Sa(L)Nb (L)= Cb/Sb(L)13.55010-1.611.26E+003.8143.96E+012.62214.5150121-0.211.01E+001.8601.48E+0265.04215.522042-1.661.07E+001.1922.06E+0235.24516.51102100.651.48E+001.0027.44E+01209.48417.5303412.432.69E+001.1071.12E+01307.90118.5202402.486.42E+001.6073.12E+00149.36019.55922.912.01E+013.0622.48E-0130.04820.59100.118.29E+017.6621.09E-011.305

a (Intercept)-7.83GRAFIK SELEKTIFITAS ALAT TANGKAP GILL NETb (Slope)0.50SF=( -2*a)/ (b*(ma+mb))1.83Lma= SF*ma14.81Lmb= SF*b16.63s= SF*(mb-ma)/b3.67

Aziz Rifianda26010312130042PSP A

TRAWL

Interval PanjangJumlahJumlahJumlahBagian yang tertahan Ln Bagian Yang TertahancmKantongPenutupTotalkantong (Sl Obs)(y)(x)Rumus =1/(1+EXP(S-S*L)ABCDEFGH9-1046100.400.419.50.4410-1179160.440.2510.50.4311-121317300.430.2711.50.4212-133245770.420.3412.50.4113-1443651080.400.4113.50.4014-1566901560.420.3114.50.3915-162013125130.390.4415.50.3916-17551021570.350.6216.50.3817-181013230.430.2617.50.3718-1949130.310.8118.50.36

a (intercept)-0.069Lc = L50%Allhamdulillahb (slope)0.034L25%=2.01Dikerjakan langsung Oleh Aziz Rifianda, Tidak Plagiat Copy PasteL50%=2.01S = a-0.069L75%=2.01S = -b-0.034Karena Lc=50% maka selektifitas alat tangkap Trawl adalah 2.01