EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/07/2017 | 10:00 AM - 10:15 AM | A META-ANALYTICAL APPROACH TO DETERMINING THE EFFECTIVENESS OF AGRICULTURAL BEST MANAGEMENT PRACTICES FOR REDUCING NUTRIENT POLLUTION IN FLORIDA | 305B
A META-ANALYTICAL APPROACH TO DETERMINING THE EFFECTIVENESS OF AGRICULTURAL BEST MANAGEMENT PRACTICES FOR REDUCING NUTRIENT POLLUTION IN FLORIDA
Best Management Practices (BMPs) that aim to reduce nutrients to off-site environmental media are regularly enacted by agriculture in Florida during Total Maximum Daily Load (TMDL) development. Currently an assumption of a consistent 30% reduction is used in nutrient models. To determine a more empirical measure of the effectiveness and variability of BMP implementation, meta-analyses were conducted for cow/calf operations, agronomic crops, and vegetable crops. A literature search generated 1001 potentially relevant papers, which were systematically evaluated for pre-set inclusion criteria. Pooled effect size of BMP implementation on nitrogen and phosphorus was determined using the log ratio of means and a random-effects maximum likelihood model, and effect sizes were back-transformed to percent reduction. There were no reductions in nutrients for cow/calf operations. For agronomic crops, BMPs provided a 60% (95% CI [9.5%, 82.1%]) reduction in nitrogen but no reductions in phosphorus. For vegetable crops, BMPs reduced nitrogen by 66% (95% CI [39.3%, 79.8%]) and phosphorus by 35% (95% CI [14.8%, 50.3%]). Further evaluation is needed to determine if nutrient loads from operations implementing BMPs would be environmentally acceptable on a watershed or springshed scale.
- C27 Landuse and Non-Point source Impacts
- C34 Science and Policy
- S17 Integrating Published Literature into the Science and Policy Arenas Influencing Our Freshwater Futures: Evidence-Based Methods to Fit the Purpose
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Presenters/Authors
Beck Frydenborg
(), Frydenborg Ecologic, LLC, beck@frecologic.com;
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Russel Frydenborg
(), Frydenborg EcoLogic, russ@frecologic.com;
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