Science in Iran. The sturgeon's last stand.

Bottom fisheries: These are generally for groundflsh species such as rockfish, cod, and sole, which are caught by bottom trawling, the fishing practice of dragging large nets weighted with chains, rollers, or rock-hopper gear across the seafloor. Trawling is the fishing practice most destructive of marine habitats. regulatory agenci to generate these quota which ideall hould make fisheries susta.lnabl and profitabl • ontributors to employment and. through int marional trade. contributors to global food ecurity. This perc ptiOD 0 fisheries a local and pedes-specific, manag d to directly benefit the orma1 anal ses of long-t on global marine fisheries prospects ha to be performed because fish ri arch focus on local, species-specific mana men! apolation of present tr n impli xpansion ofbottom fisheri inlo d per waters, s rious impacl on biodiversity, and declining global calch -lh last possibly aggrav31 d by fu Icost iner as s. Examination offourscenarios, cov ring various societal deve10pm nl hoi s, sugg sts that th negative trends now b s tling fisheri can be turned around, and Lh ir supporting ecosystems rebuilt. at least partly. Fi hen are commonly p rc iv d a local affair [quiring. in term of d ntifi inputs. annual rea es ments of sped pecific catch quo . 0 t fi helies scientis ar ernpl0 ed b