oh and kev as to the recco catches 10 yr ago
Although many fish captured by anglers are released (approaching 100 percent for some species), there can be substantial postrelease mortality (Muoneke and Childress 1994, Cooke and Suski forthcoming) as well as more subtle sublethal effects on growth and fitness (Cooke et al. 2002). Release mortality in recreational fisheries is analogous to bycatch discards in commercial fisheries, an internationally recognized conservation problem (Alverson et al. 1994).
In addition to contributing directly to global fishery declines through harvest or mortality, recreational fisheries can contribute to alterations in system function and quality. Harvest or postrelease mortality can act as a selective force in recreational fisheries (Policansky 1993), as it has been observed to do in commercial fisheries (Heino and Godo 2003). Although fewer examples exist in recreational fisheries, trophic or ecosystem-level effects can also be observed (McPhee et al. 2002). Environmental degradation from fishing was once attributed primarily to commercial activities (Dayton et al. 1995), but the recreational sector is now understood to have its fair share of responsibility (Cryer et al. 1987). Discarded fishing line and hooks can foul birds, marine mammals, corals, and other marine life, resulting in substantial injury and mortality (Cowx 2002, McPhee et al. 2002 ). Also, the accumulation of lead sinkers can result in mortality of waterbirds and have effects at higher trophic levels (Cowx 2002). Anglers may disturb wildlife, trample riparian vegetation to gain access to the water, and increase nutrient loading through ground baiting (distribution of organic bait to attract fish). Recreational boat traffic and the associated noise pollution, waves, erosion, and scarring also contribute to environmental degradation (Cowx 2002, McPhee et al. 2002).
Recreational fisheries are also responsible for an as yet undetermined degree of degradation offish stocks through fishery enhancement practices (Cowx 1998) or introductions (Cambray 2003). Notwithstanding these issues, the position of recreational fisheries must be balanced against the huge value (billions of dollars) of the sector to regional and local economies (Cowx 2002).
Recreational fishing and global fish crises
Several factors may explain the lack of attention to recreational fisheries in the consideration of global fishery crises. Collapses induced by recreational fishing may be difficult to detect (Post et al. 2002). Few long-term monitoring programs exist that could be used to detect declines in a global context. Furthermore, anglers exhibit complex behavior, and fisheries respond dynamically to exploitation (Post et al. 2002). Also, because recreational anglers represent a vocal and effective constituent group, the standard response to perceived or actual decline or alteration in population structure is supplementation (Cowx 1998). Hence, the impact of recreational fishing is typically addressed by curing symptoms rather than by addressing underlying causes.
like to hightlight the sector that says
release mortality in recco fisheries analogous to bycatch discards is commercial fisheries.
had to look up analogous;similar,paralell [oxford concise]
mmmmmmmm
sumthing about clean fingers and pointing......
realize i have posted this b4 but think u need to read it again