Predicting Nighttime Dissolved Oxygen Loss in Aquaculture Ponds

Abstract
The Whole Pond Respiration–Diffusion (WPRD) model was evaluated for brackish-water ponds. The WPRD model accurately describes the nighttime decline of dissolved oxygen concentration (DO) in both freshwater and brackish-water ponds. DO, water temperature, and wind speed were monitored overnight in marine shrimp (Penaeus vannamei and P. monodon) ponds at Amorient Aquafarm Inc. (Kahuku, Oahu) and at the Mariculture Research and Training Center (Hakipuu, Oahu) during July through December 1986. The model performed well for calm nights (wind speed between 1 and 2 m∙s−1) and for relatively windy nights (wind speed greater than 7 m∙s−1). Diffusion of oxygen into the ponds, particularly at Amorient, was important in determining the nighttime DO decline. The model has yielded accurate predictions of dawn DO for a variety of aquaculture ponds and meteorological conditions.

This publication has 0 references indexed in Scilit: