J.4 SUPPL E ME NT AL HMSMT RE PORT ON DRI F T GI L L NE - - PowerPoint PPT Presentation

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

Age nda Ite m J.4.a Supple me ntal RE VISE D HMSMT Pr e se ntation 1 June 2019

OVE RVI E W

1.

Annua l E stima te s o f Byc a tc h

2.

Multi-a nnua l Byc a tc h Ra te Appro a c h

3.

Re q uire d Ob se rve r Co ve ra g e to Me e t Byc a tc h De te c tio n a nd E stima tio n Go a ls

4.

I de ntific a tio n o f Spe c ific Byc a tc h Re duc tio n Me a sure s 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

• 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

• 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