Nutrient Loading Factors
ثبت نشده
چکیده
Nutrient Loading Factors Phosphorus Nitrogen Surface Runoff Coefficients lb P/acre/year lb N/acre/year LAND USE Low High Low High Low High [1] HD Res.(>8 /ac) 0.64 0.77 3.6 4.4 11.9 14.3 [2] MHD Res.(4-7.9/ac) 0.39 0.64 2.2 3.6 7.3 11.9 [3] MD Res.(1-3.9/ac) 0.23 0.39 1.3 2.2 4.3 7.3 [4] MLD Res.(0.5-0.9/ac) 0.16 0.23 0.9 1.3 3.0 4.3 [5] LD Res.(<0.5/ac) 0.10 0.16 0.6 0.9 1.9 3.0 [6] Commercial 0.50 0.85 1.0 2.5 2.0 20.0 [7] Industrial 0.50 0.85 1.0 3.5 2.0 15.0 [8] Roads 0.70 0.82 1.0 3.5 2.0 20.0 [9] Airports 0.70 0.82 1.0 3.5 2.0 20.0 [10] Railroads 0.70 0.82 1.0 3.5 2.0 20.0 [11] Junkyards 0.70 0.82 1.0 3.5 2.0 20.0 [12] Recreation 0.10 0.30 0.5 1.5 1.5 4.0 [13] Institution 0.39 0.64 2.2 3.6 7.3 11.9 [14] Pasture 0.05 0.25 0.3 1.0 2.0 5.5 [15] Cropland 0.15 0.50 0.5 4.5 4.0 50.0 [16] Orchards 0.05 0.25 0.4 2.0 4.0 35.0 [17] Brush 0.00 0.10 0.1 0.2 0.9 2.9 [18] Forest 0.00 0.10 0.1 0.2 0.9 2.9 [19] Barren 0.05 0.80 0.1 0.2 0.9 2.9 [20] Wetland 0.00 0.10 0.0 0.0 0.0 0.0 [21] Water 1.00 1.00 0.3 0.3 8.0 8.0
منابع مشابه
Shallow Lakes: Effects of Nutrient Loading and How to Remedy Eutrophication
1. The Eutrophication Process 2. Resistance to Increasing Nutrient Loading 2.1 Indirect Effects 2.2 Effects on Fish and Zooplankton 3. Triggering Factors for the Loss of Submerged Plants 4. Resistance to Decreasing Nutrient Loading 4.1 Chemical Resistance 4.2 Biological Resistance 5. How to Break the Chemical Resistance 6. H ow to Break the Biological Resistance 7. Perspectives Acknowledgments ...
متن کاملTranscriptional and Physiological Responses to Nutrient Loading on Toxin Formation and Photosynthesis in Microcystis Aeruginosa FACHB-905
An important goal of understanding harmful algae blooms is to determine how environmental factors affect the growth and toxin formation of toxin-producing species. In this study, we investigated the transcriptional responses of toxin formation gene (mcyB) and key photosynthesis genes (psaB, psbD and rbcL) of Microcystis aeruginosa FACHB-905 in different nutrient loading conditions using real-ti...
متن کاملQuantifying the Impacts of Stratification and Nutrient Loading on Hypoxia in the Northern Gulf of Mexico
Stratification and nutrient loading are two primary factors leading to hypoxia in coastal systems. However, where these factors are temporally correlated, it can be difficult to isolate and quantify their individual impacts. This study provides a novel solution to this problem by determining the effect of stratification based on its spatial relationship with bottom-water dissolved oxygen (BWDO)...
متن کاملN-limited consumer growth and low nutrient regeneration N:P ratios in lakes with low N deposition
Nutrient limitation of primary producers and their consumers can have a large influence on ecosystem productivity. The nature and strength of nutrient limitation is driven both by external factors (e.g., nutrient loading) and internal processes (e.g., consumer-driven nutrient regeneration). Here we present results from a field study in 10 low productive headwater lakes in northern subarctic Swe...
متن کاملSpringshed Nutrient Loading, Transport and Transformations
A discussion of the effects of nutrients on springs biota and ecosystems of necessity requires an understanding of the manner and mechanism of nutrient delivery. Moreover, as evidence accumulates for particular consequences of nutrient and contaminant loading, understanding how those loads can be attenuated is crucial. This chapter focuses on nutrient loading to springsheds, with an emphasis on...
متن کاملOrganic N and P in eutrophic fjord sediments – rates of mineralization and consequences for internal nutrient loading
Nutrient release from the sediments in shallow eutrophic estuaries may counteract reductions of the external nutrient load and prevent or prolong ecosystem recovery. The magnitude and temporal dynamics of this potential source, termed internal nutrient loading, is poorly understood. We quantified the internal nutrient loading driven by microbial mineralization of accumulated organic N (ON) and ...
متن کامل