Abstract
Abstract We characterized the biomass and productivity of relatively short-lived red and green algae at seven intertidal sites in Cobscook Bay during the summers of 1995 and 1996 in coves (low flow, n = 4) and headlands (high flow, n = 3) across two to three tidal levels. We chose Palmaria palmata (pseudo-perennial) as a proxy for red algae and Ulva lactuca and Enteromorpha spp. (“r” species) as surrogates for green algae. We provide ancillary data on temperature, salinity, nutrients, and tissue nutrients. Also, we examined nutrient relationships in the Bay, near and away from a salmon farm. Estimates of productivity were based on biomass. The minimum estimate of net productivity for a site was based on the highest biomass value obtained on any one date over the summer sampling period. The maximum estimate of productivity was based on minimum productivity multiplied by frond generation times. Generally, maximum biomass values for both groups occurred in the low intertidal. Mean (± 95% CI) maximum biomass ...
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