Multiple measurement of the coupling between benthic carbon fluxes and bioturbation activity during the ``spring bloom``. Progress report 1992

摘要: In accordance with the research plan outlined in our original proposal, we began monitoring indicators of plankton production (Chl-a, cell counts) surface waters Long Island Sound from Port Jefferson / Bridgeport Ferry on Dec. 3, 1992. contrast to past years no dramatic bloom has occurred date although a significant pattern increasing chl-a during first week April. We anticipate that wig be complete by mid late This been particularly cold year based comparison 1993 bottom water temperatures and previously reported patterns LIS, possibly reflecting climatic conditions which delayed bloom. Typical sampling includes: for suspended matter, counts, chlorophyll-a, nutrients; triplicate box cores macro-, meio-, microfauna analysis; subcores O{sub 2} microelectrode profiles; core radiochemical analyses ({sup 234}Th, {sup 7}Be); benthic fluxes under aerated nonaerated (O{sub 2}, {Sigma}N, Mn{sup ++}, {Sigma}CO{sub 2}); Br{sup {minus}} tracer flux incubation biogenic irrigation rates; laboratory luminophore experiments (particle mixing); solid phase pore solute profiles (carbonate system, nutrients, Ca, Mg,more » Sr, F, Mn, Fe) at 0.25 {minus} 1 cm intervals; chloropigment reaction rate experiments.« less