Shrimp populations variability in numbers and sizes in response to disturbance and seasons on 20 pools along the reach of Quebrada Prieta, Luquillo Experimental Forest

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Status:

Completed

Title

Summary

DOI:

10.6073/pasta/fc0d1747de756e7f2ac7d46d5b1723a9

Short name:

LUQMetadata120

Data set ID:

120

Abstract:

Shrimp populations were monitored at approximately 3 week intervals to determine the variability in numbers and sizes of each species in response to disturbance and seasons.

Dates

Date Range:

1990-07-10 00:00:00 to 1990-08-01 00:00:00

People

Owner/Creator:

Karen M. Buzby

Contact:

Nicholas Brokaw

Additional Project roles:

Name: Miguel C Leon Role: Data Manager

Methodology

Methods:

20 pools along the reach were identified and include as much variety in pool morphology as possible. Due to variablity in flow conditions not all of the pools were sampled at each time point. 1-4 minnow traps, depending on pool size, were baited with Moist Meals cat food (chicken flavor) and placed in each pool late in the afternoon at approximately 3 week intervals. The reach was broken into two halves and the upper section trapped one day followed by the lower section on the next day. The traps were checked in the morning; all shrimp caught were identified to species. Carapace length and if the shrimp was gravid were recorded. Shrimp were returned to the pool they were caught in after all data was collected. Note: Reach starts where the trail from the Sonadora bridge on Hwy 186 crosses the stream and ends approximately 125 meters upstream.