Model selection table for Forster’s Tern chick daily survival rates.

<p>Model selection table for Forster’s Tern chick daily survival rates.</p

Study location in South San Francisco Bay, California, Alviso Pond A17 (north) and Pond A16 (south).

<p>Arrows indicate the dominant direction of flow from Coyote Creek in the north through the inflow gate to Pond A17, through the uncontrolled internal levee channel into Pond A16, and out the A16 discharge gate in the southeast corner into Alviso Slough. The circle indicates datasonde location; triangles indicate minisonde sampling locations. Forster’s Tern nesting colonies occurred on the four linear islands in the southern part of pond A16. Imagery provided by Landsat 8 and 2005 National Agricultural Imagery Program (NAIP).</p

Daily survival rate with 95% Confidence Intervals (CI) of Forster’s Tern chicks during each of nine intervals between 10 capture events at Pond A16 in San Francisco Bay during the breeding season.

<p>California Gulls started using Pond A16 heavily on 3 August 2005, and Forster’s Tern chick survival declined significantly thereafter.</p

Species and relative percent collected of 471 individual fish from the Forster’s Tern colony between 20 July and 17 August 2005.

<p>Species and relative percent collected of 471 individual fish from the Forster’s Tern colony between 20 July and 17 August 2005.</p

Monthly mean salinity (PSU; ± SE; <i>n</i> = 4) changes over the course of restoration in Pond A16.

<p>We used four measurements from around the pond to calculate SE where August 2005 corresponds with a period of hypoxia.</p

Chain of events and trophic interactions of Pond A16 concomitant with the low DO and gull intrusion events.

<p>Salinity reduction resulted from management actions during the Initial Stewardship Plan (ISP) of the South Bay Salt Pond Restoration Project in San Francisco Bay.</p

Fine scale water quality and environmental parameters of Pond A16 from 25 July through 25 August 2005.

<p>Water quality conditions from the pond (pale grey line) and weir box (dark grey) datasondes are depicted in the top three panels: Dissolved oxygen (DO; mg L^-1), pH and salinity (PSU), water temperature (°C). Weather conditions are represent in the bottom two panels: air temperature (°C), photosynthetically active radiation (PAR; mol quanta m^-2 s^-2), and wind speed (m s^-1). Data download (circles) and calibration (diamonds) occurred on alternating weeks. Triangles (top two panels) represent ambient South San Francisco Bay water conditions. The DO sensor of both datasondes were fouled and failed to log data from 12–15 August.</p

Count (n; solid colors) and dry weight (g; patterns) of fish collected at Forster’s Tern nesting colonies on Pond A16 from 20 July through 17 August 2005.

<p>The five taxa represented (Northern anchovy, NOAN; yellowfin goby, YEGO; longjaw mudsucker, LJMU; unknown goby, UNGO; topsmelt = TOPS), constituted 95% of count and dry weight observed.</p