. Bulletin - Southern California Academy of Sciences. Science. SOIL ORGANIC CARBON STORAGE IN RESTORED SALT MARSHES 155 W 125'-^ 123" 121" 119" 117" 115" I I I I I I I I I I N33"38' ' 38''. N41" 39" -37" 35" -33" W 117" 58'' 57'' Fig. 1. Map of Talbert Marsh and Brookhurst Marsh in Huntington Beach, Cahfornia. Talbert Marsh was restored in 1989 and Brookhust Marsh was restored in 2009. Marshes boundaries are indicated by dashed lines. Soil organic carbon was measured in 3 soil cores collected in each marsh (soil blac
. Bulletin - Southern California Academy of Sciences. Science. SOIL ORGANIC CARBON STORAGE IN RESTORED SALT MARSHES 155 W 125'-^ 123" 121" 119" 117" 115" I I I I I I I I I I N33"38' ' 38''. N41" 39" -37" 35" -33" W 117" 58'' 57'' Fig. 1. Map of Talbert Marsh and Brookhurst Marsh in Huntington Beach, Cahfornia. Talbert Marsh was restored in 1989 and Brookhust Marsh was restored in 2009. Marshes boundaries are indicated by dashed lines. Soil organic carbon was measured in 3 soil cores collected in each marsh (soil black circles). Net ecosystem respiration, including net CH4 flux, was measured using 2 static chambers adjacent to each soil core. Belowground biomass was measured in 3 evenly-spaced root cores collected along existing vegetation monitoring transects (solid black hnes) within each marsh. Restoration of the adjacent, 67-acre Brookhurst Marsh began in 2008 and tidal flow was restored in July 2009 following the removal of a levee from the flood control channel (Gordon Smith, Huntington Beach Wetlands Conservancy, personal communication). Sites utilized for the current project were located in the mid/high marsh which is dominated by vegetation characteristic of southern California salt marsh ecosystems, including: Sarcocornia pacifica (Standi.) Scott (perennial pickleweed), Frankenia salina (Molina) Johnst (alkali seaheath), Batis maritima L. (saltwort), and DistichUs spicata (L.) Greene (saltgrass). Soil Organic Carbon To quantify soil organic carbon content, 3 soil cores were collected from both Talbert and Brookhurst Marshes in September-October of 2011 (Figure 1). Cores were collected to depths of —42 cm (Talbert) and —46 cm (Brookhurst) using a diameter stainless steel tube equipped with a sharpened bottom edge. Despite the twisting and downward pressure required to collect soil cores, compaction of soils was minimal and depths to the soil surface measured f
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