UCNRS RAMS

This data collection is identical to my June, July, and August reservations as part of summer monthly field work to assess crab activity along tidal creeks in relation to hydrological, morphological, and environmental conditions. A total of 12 transects 10m in length will be established along tidal creek banks. At 4 random distances along each transect, pitfall trapping and burrow counts will be conducted. Pitfall traps are made from tennis ball containers with holes drilled in the bottom for drainage. Each trap will be placed with the top of the trap flush to the marsh surface, just on the edge of the marsh plain where the creek bank ends. Plastic covers (4in. diameter) will be staked into the marsh over each trap, allowing a 1in. gap for crabs to access the trap and preventing bird chicks from falling in. One minnow trap will be baited with anchovies and placed in the creek at the mid-point of all transects that have a water depth of at least 5cm at the low tide of the day. All traps will be deployed for 24 hours, after which all crab individuals will be measured for carapace width, identified to species and sex, and returned live to the field. Along the top of the creek bank at the same transect locations of pitfall traps, a 0.25m x 0.25m quadrat will be used for burrow counts. Water and air temperature will be measured with a total immersion field thermometer. Dissolved oxygen, pH, salinity, ammonia, and nitrate will be measured with a multiparameter water quality sonde at the midpoint of each transect within the channel. As a proxy for bank stability, bank angle will be measured at the same transect distances of pitfall trapping and burrow counts. Bank angle will be measured using a clinometer from the creek bed to where the creek bank meets the marsh plain.

Visit #93570 @Kendall-Frost Mission Bay Marsh Reserve

Approved

Under Project # 56337 | Research

2024 Observational burrow, creek, and veg surveys at Kendall Frost Marsh

graduate_student - University of California, Davis

Visitor List

Devon Kelley Sep 16, 2024 (1 days)

Wilfred Pugh Sep 16, 2024 (1 days)

Kelly Knudson Sep 16, 2024 (1 days)

Devon Kelley Sep 17, 2024 (1 days)

Wilfred Pugh Sep 17, 2024 (1 days)

Reserve Amenities | Create Invoice

Outdoor use only 1 Sep 16 - 17, 2024