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Nutrient and Chlorophyll Relations in Selected Streams of the New England Coastal Basins in Massachusetts and New Hampshire, June-September 2001

U.S. Geological Survey Water Resources Investigation 03-4191

By Melissa L. Riskin1, Jeffrey R. Deacon1, Matthew L. Liebman2, and Keith W. Robinson1

1 U.S. Geological Survey

2 U.S. Environmental Protection Agency

CONTENTS

Cover (232 KB pdf)

Foreword

Abstract

Introduction

Purpose and Scope

Description of Study Area

Acknowledgments

Data-collection and Analysis

Sample Collection

Quality Assurance

Statistical Methods

Characterization of Nutrients and Chlorophyll

Nutrients

Chlorophyll

Application of Nutrient and Chlorophyll a Data to In-Stream Criteria Development by Water-Resources Managers

Summary and Conclusions

References Cited

Figures

Figure 1. Map showing sampling sites, site-identification numbers, and site types in the New England Coastal Basins study area in Massachusetts and New Hampshire

Figure 2. Graph showing total nitrogen concentrations among site types in the New England Coastal Basins study area

Figure 3. Graph showing total phosphorus concentrations among site types in the New England Coastal Basins study area

Figure 4. Graph showing chlorophyll a from periphyton samples among site types at the open-canopy locations in the New England Coastal Basins study area

Figure 5. Graph showing chlorophyll a from periphyton samples among site types at the closed-canopy locations in the New England Coastal Basins study area

Figure 6. Graph showing chlorophyll a from periphyton samples among site types at the six sites with open- and closed-canopy sampling locations in the New England Coastal Basins study area

Figure 7. Graph showing relation between total nitrogen and periphyton chlorophyll a concentrations for the six open-canopy sites sampled five times from June through September 2001 in the New England Coastal Basins study area in Massachusetts and New Hampshire

Figure 8. Graph showing relation between total phosphorus and periphyton chlorophyll a concentrations for the six open-canopy sites sampled five times from June through September 2001 in the New England Coastal Basins study area in Massachusetts and New Hampshire

Tables

Table 1. Selected characteristics for the study sites in the New England Coastal Basins study area in Massachusetts and New Hampshire

Table 2. Summary of selected nutrient and chlorophyll a concentrations (open- and closed-canopy sites) for the study site types in the New England Coastal Basins study area in Massachusetts and New Hampshire

Table 3. Percentile statistics of total nitrogen, total phosphorus, and periphyton chlorophyll a concentrations for the study sites in the New England Coastal Basins study area in Massachusetts and New Hampshire

Table 4. Summary of total nitrogen and total phosphorus concentrations for potential methods of nutrient criteria development in the Northeastern Coastal Zone in Massachusetts and New Hampshire


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For additional information, write to:

 

District Chief

U.S. Geological Survey

New Hampshire/Vermont District

361 Commerce Way

Pembroke, NH 03275-3718

 

or visit our Web site at http://nh.water.usgs.gov

 

Copies of this report can be purchased from:

 

U.S. Geological Survey

Branch of Information Services

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Denver, CO 80225-0286

 


 

 

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