Age nda Ite m J.4.a Supple me ntal RE VISE D HMSMT Pr e se ntation 1 June 2019 J.4 SUPPL E ME NT AL HMSMT RE PORT ON DRI F T GI L L NE T PE RF ORMANCE ME T RI CS RE VI E W June 2019 Co unc il Me e ting
OVE RVI E W Annua l E stima te s o f Byc a tc h 1. Multi-a nnua l Byc a tc h Ra te Appro a c h 2. Re q uire d Ob se rve r Co ve ra g e to Me e t Byc a tc h 3. De te c tio n a nd E stima tio n Go a ls I de ntific a tio n o f Spe c ific Byc a tc h Re duc tio n Me a sure s 4. T e c hnic a l Appe ndix
T ABL E 1: MARI NE MAMMAL AND T URT L E SPE CI E S
T ABL E 2: F I NF I SH SPE CI E S
U -CHART F OR MANT A RAY (Ye llow = War ning L ine ; Re d = Ac tion L ine )
OBSE RVE R COVE RAGE T OOL What do e s it pro vide ? 1) Pro b a b ility o f o b se rving a ny b yc a tc h, g ive n tha t it o c c urre d in X fishing se ts. 2) Pro b a b ility o f a c hie ving b yc a tc h e stima tio n pre c isio n g o a ls (a s me a sure d in c o e ffic ie nt o f va ria tio n, CV). 3) Pro b a b ility o f a ny b yc a tc h ha ving o c c urre d in X fishing se ts, g ive n use r inputs o n BPUE a nd pro c e ss (Po isso n o r o the rwise ).
I DE NT I F I CAT I ON OF SPE CI F I C BYCAT CH RE DUCT I ON ME ASURE S Spe c ific me a sure s will de pe nd o n c a usa l fa c to rs unde rlying a g ive n b yc a tc h e ve nt E xa mple s o f po te ntia l ma na g e me nt me a sure s: time -a nd-a re a c lo sure s, E c o c a st, re c o nve ne T RT , g e a r inno va tio ns a nd mo dific a tio ns
HMSMT RE COMME NDAT I ONS: 1. Ado pt the b yc a tc h ra te a ppro a c h to e va lua ting pe rfo rma nc e me tric s in the DGN fishe ry 2. T a sk the HMSMT with pro viding BPUE time se rie s a nd c o ntro l line s fo r a ll spe c ie s a t the June 2020 me e ting
F ig ure 3a
F ig ure 3b
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