Filter feeders and other shellfish live in shallow coastal environments. - Iron is generally not limited there, so OIF would likely have no effect. - Coastal environments would not be a great place to sequester carbon intentionally-- despite the fact that a lot of carbon is naturally sequestered in coastal/shelf zones-- because it's difficult to really demonstrate unequivocally the permanence of storage here based on ocean circulation models anyway-- which is how the permanence question is primarily being tackled at the moment from those who i'm aware of. - Shellfish concentrate domoic acid a neurotoxin which some forms of algal blooms (pseudonitzschia) produce. and although some papers have attributed the acid produciton to other factors, this is probably still anethema. - Coastal environments are shallow-- excess algal production would lead to oxygen depletion at the seafloor-- bad for oysters for sure.
etc. etc D On Jan 8, 4:40 am, dsw_s <[email protected]> wrote: > An article in this month's Economist magazine talks about the > importance of oysters to estuarine water quality: oysters, it says, > are picky about what they eat but not about what they filter. They > filter all suspended particles, eat a little, and excrete the rest as > pellets that sink to the bottom. Oysters live in brackish water, not > the full salinity of the open sea where iron is scarce, but there are > other filter feeders such as mussels that do live in full saltwater. > Could large-scale aquaculture of some filter-feeding organism improve > the efficiency of ocean iron fertilization by producing more sinking > fecal pellets and returning less of the carbon to the atmosphere? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
