James Larson
James Larson
Science and Products
Filter Total Items: 20
Biofouling and mussel growth from mussels deployed in Great Lakes embayments (2013-2016) Biofouling and mussel growth from mussels deployed in Great Lakes embayments (2013-2016)
Many taxa of North American unionid mussels are imperiled due to biofouling by invasive dreissenid mussels. Here, we report on biofouling rates of unionid mussels suspended in cages during the growing season in nearshore embayments in Lake Erie (2013-2016), Lake Michigan (Green Bay 2016, Grand Traverse Bay 2015) and Lake Huron (Saginaw Bay 2015). Mussels were deployed in early summer...
Temperature and invertebrate community composition at nearshore Great Lakes sites, 2013-2016 (ver. 2.0, April 2025) Temperature and invertebrate community composition at nearshore Great Lakes sites, 2013-2016 (ver. 2.0, April 2025)
Data on ambient water temperatures and invertebrate community composition from ~40 sites in the western basin of Lake Erie, Saginaw Bay (Lake Huron), Grand Traverse Bay (Lake Michigan) and Green Bay (Lake Michigan). These samples were collected as part of a study on spatial variation in ecosystem processes.
Code associated with analysis and modeling of benthic and pelagic inorganic nutrient processing rates at the interface between a river and lake Code associated with analysis and modeling of benthic and pelagic inorganic nutrient processing rates at the interface between a river and lake
In this data release the authors have code and 'data' that are used to model how sediment flux and water column processing of soluble reactive phosphorus (SRP), ammonium (NH4/NHX) and nitrate (NOX). The file 'README.md' contains background information on how to access and use the data and code files.
Data Release Sediment and water column flux data from the Fox Rivermouth (Green Bay, WI; 2017) Data Release Sediment and water column flux data from the Fox Rivermouth (Green Bay, WI; 2017)
These are data associated with water column incubation experiments performed in the Fox rivermouth. The Fox River is a Lake Michigan tributary that enters Green Bay. These experiments are used to measure the transformation of inorganic and total dissolved nutrients occurring in the surface water of the rivermouth. Experiments had light and dark treatments, and some experiments were...
Mercury and water level fluctuations in lakes of northern Minnesota - sampling site land cover and inundated area data Mercury and water level fluctuations in lakes of northern Minnesota - sampling site land cover and inundated area data
These data tables summarize land cover classifications, slope measurements, and inundated area estimates for several lakes in northern Minnesota, as part of a larger project seeking to identify associations between young-of-year Yellow Perch mercury content and water level metrics, temperature, and annual deposition data in a multivariate analysis. One table presents inundated area...
Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017 Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017
Acoustic telemetry data (Vemco, Inc) were collected on invasive silver carp (Hypophthalmichthys molitrix), bighead carp (H. nobilis) and their hybrids in the upper Mississippi River (navigation pools 15-19) to determine movement patterns and preferred habitats during September 2013 through November 2017. We consolidated these data into intervals of fish within-pool residency and...
Filter Total Items: 53
Corrigendum: Associations between cyanobacteria and indices of secondary production in the western basin of Lake Erie Corrigendum: Associations between cyanobacteria and indices of secondary production in the western basin of Lake Erie
In the last year, we became aware that data used in our above-referenced manuscript from 2018 published in Limnology and Oceanography contained significant errors. In the 2018 manuscript, we found that indices of secondary production were negatively correlated to indices of cyanobacterial abundance and toxicity. Unfortunately, one of our indices of cyanobacterial abundance (biovolume)...
Authors
James H. Larson, Mary Anne Evans, Robert J Kennedy, Sean Bailey, Keith A. Loftin, Zachary R. Laughrey, Robin A. Femmer, Jeff S. Schaeffer, William B. Richardson, T.T. Wynne, John C. Nelson, Joseph W. Duris
Environmental drivers of cyanobacterial abundance and cyanotoxin production in backwaters of the Upper Mississippi River Environmental drivers of cyanobacterial abundance and cyanotoxin production in backwaters of the Upper Mississippi River
High densities of cyanobacteria in aquatic ecosystems can cause impacts to ecosystem services because they serve as a poor-quality food resource, produce toxins and can indirectly cause a variety of other negative impacts to water quality. There are many hypotheses about the potential environmental drivers of variation in cyanobacterial abundance and toxicity, but these hypotheses have...
Authors
Shawn M. Giblin, James H. Larson, Jeremy D. King
Episodic nutrient addition affects water column nutrient processing rates in river-to-lake transitional zones Episodic nutrient addition affects water column nutrient processing rates in river-to-lake transitional zones
Storm-driven nutrient loading from tributaries can fuel eutrophication in nearshore and open water areas of lentic ecosystems. However, nutrient processing in river-to-lake transitional zones can substantially alter the amount and composition of nutrients transported to lakes from upstream surface waters. We measured the removal of nutrients and dissolved organic carbon (DOC) from the...
Authors
Nolan J.T. Pearce, James H. Larson, Mary Anne Evans, Paul C. Frost, Marguerite A. Xenopoulos
Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river
As the range of non-native bigheaded carps (Hypophthalmichthys spp.) continues to expand throughout river systems of the United States, managers are tasked with preventing or slowing the spread of these invasive species. Main stem navigation dams on the upper Mississippi River, long considered a deterrent to fish migration, may slow or prevent the spread of invasive fish species. As...
Authors
Jonathan M. Vallazza, Kayle J. Mosel, David M. Reineke, Ann L. Runstrom, James H. Larson, Brent C. Knights
Benthic and planktonic inorganic nutrient processing rates at the interface between a river and lake Benthic and planktonic inorganic nutrient processing rates at the interface between a river and lake
The interface between lotic and lentic ecosystems is often a zone of intense metabolic activity, as primary production in streams and rivers can be light limited whereas nutrients often limit primary production in lake ecosystems. Our objective was to model the influence that rivermouths (the lotic-lentic interface) could have on the loads of soluble reactive phosphorus (SRP) and...
Authors
James H. Larson, Mary Anne Evans, Faith A. Fitzpatrick, Paul C. Frost, Marguerite A. Xenopoulos, William F. James, Paul C. Reneau
Mercury and water level management in lakes of northern Minnesota Mercury and water level management in lakes of northern Minnesota
Water level (WL) fluctuations substantially alter the fauna, flora, and microbial community of nearshore aquatic ecosystems. Water level management therefore has the potential to strongly influence a wide variety of ecosystem processes. Many northern temperate lake food webs experience substantial methylmercury contamination, which is partially mediated by the action of sulfate-reducing...
Authors
James H. Larson, Ryan P. Maki, Victoria Christensen, Enrika Hlavacek, Mark B. Sandheinrich, Jaime F. LeDuc, Claire Kissane, Brent C. Knights
Science and Products
Filter Total Items: 20
Biofouling and mussel growth from mussels deployed in Great Lakes embayments (2013-2016) Biofouling and mussel growth from mussels deployed in Great Lakes embayments (2013-2016)
Many taxa of North American unionid mussels are imperiled due to biofouling by invasive dreissenid mussels. Here, we report on biofouling rates of unionid mussels suspended in cages during the growing season in nearshore embayments in Lake Erie (2013-2016), Lake Michigan (Green Bay 2016, Grand Traverse Bay 2015) and Lake Huron (Saginaw Bay 2015). Mussels were deployed in early summer...
Temperature and invertebrate community composition at nearshore Great Lakes sites, 2013-2016 (ver. 2.0, April 2025) Temperature and invertebrate community composition at nearshore Great Lakes sites, 2013-2016 (ver. 2.0, April 2025)
Data on ambient water temperatures and invertebrate community composition from ~40 sites in the western basin of Lake Erie, Saginaw Bay (Lake Huron), Grand Traverse Bay (Lake Michigan) and Green Bay (Lake Michigan). These samples were collected as part of a study on spatial variation in ecosystem processes.
Code associated with analysis and modeling of benthic and pelagic inorganic nutrient processing rates at the interface between a river and lake Code associated with analysis and modeling of benthic and pelagic inorganic nutrient processing rates at the interface between a river and lake
In this data release the authors have code and 'data' that are used to model how sediment flux and water column processing of soluble reactive phosphorus (SRP), ammonium (NH4/NHX) and nitrate (NOX). The file 'README.md' contains background information on how to access and use the data and code files.
Data Release Sediment and water column flux data from the Fox Rivermouth (Green Bay, WI; 2017) Data Release Sediment and water column flux data from the Fox Rivermouth (Green Bay, WI; 2017)
These are data associated with water column incubation experiments performed in the Fox rivermouth. The Fox River is a Lake Michigan tributary that enters Green Bay. These experiments are used to measure the transformation of inorganic and total dissolved nutrients occurring in the surface water of the rivermouth. Experiments had light and dark treatments, and some experiments were...
Mercury and water level fluctuations in lakes of northern Minnesota - sampling site land cover and inundated area data Mercury and water level fluctuations in lakes of northern Minnesota - sampling site land cover and inundated area data
These data tables summarize land cover classifications, slope measurements, and inundated area estimates for several lakes in northern Minnesota, as part of a larger project seeking to identify associations between young-of-year Yellow Perch mercury content and water level metrics, temperature, and annual deposition data in a multivariate analysis. One table presents inundated area...
Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017 Data for dam passage analysis of bigheaded carps in Pools 15-19 of the upper Mississippi River during 2014-2017
Acoustic telemetry data (Vemco, Inc) were collected on invasive silver carp (Hypophthalmichthys molitrix), bighead carp (H. nobilis) and their hybrids in the upper Mississippi River (navigation pools 15-19) to determine movement patterns and preferred habitats during September 2013 through November 2017. We consolidated these data into intervals of fish within-pool residency and...
Filter Total Items: 53
Corrigendum: Associations between cyanobacteria and indices of secondary production in the western basin of Lake Erie Corrigendum: Associations between cyanobacteria and indices of secondary production in the western basin of Lake Erie
In the last year, we became aware that data used in our above-referenced manuscript from 2018 published in Limnology and Oceanography contained significant errors. In the 2018 manuscript, we found that indices of secondary production were negatively correlated to indices of cyanobacterial abundance and toxicity. Unfortunately, one of our indices of cyanobacterial abundance (biovolume)...
Authors
James H. Larson, Mary Anne Evans, Robert J Kennedy, Sean Bailey, Keith A. Loftin, Zachary R. Laughrey, Robin A. Femmer, Jeff S. Schaeffer, William B. Richardson, T.T. Wynne, John C. Nelson, Joseph W. Duris
Environmental drivers of cyanobacterial abundance and cyanotoxin production in backwaters of the Upper Mississippi River Environmental drivers of cyanobacterial abundance and cyanotoxin production in backwaters of the Upper Mississippi River
High densities of cyanobacteria in aquatic ecosystems can cause impacts to ecosystem services because they serve as a poor-quality food resource, produce toxins and can indirectly cause a variety of other negative impacts to water quality. There are many hypotheses about the potential environmental drivers of variation in cyanobacterial abundance and toxicity, but these hypotheses have...
Authors
Shawn M. Giblin, James H. Larson, Jeremy D. King
Episodic nutrient addition affects water column nutrient processing rates in river-to-lake transitional zones Episodic nutrient addition affects water column nutrient processing rates in river-to-lake transitional zones
Storm-driven nutrient loading from tributaries can fuel eutrophication in nearshore and open water areas of lentic ecosystems. However, nutrient processing in river-to-lake transitional zones can substantially alter the amount and composition of nutrients transported to lakes from upstream surface waters. We measured the removal of nutrients and dissolved organic carbon (DOC) from the...
Authors
Nolan J.T. Pearce, James H. Larson, Mary Anne Evans, Paul C. Frost, Marguerite A. Xenopoulos
Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river Timing and hydrological conditions associated with bigheaded carp movement past navigation dams on the upper Mississippi river
As the range of non-native bigheaded carps (Hypophthalmichthys spp.) continues to expand throughout river systems of the United States, managers are tasked with preventing or slowing the spread of these invasive species. Main stem navigation dams on the upper Mississippi River, long considered a deterrent to fish migration, may slow or prevent the spread of invasive fish species. As...
Authors
Jonathan M. Vallazza, Kayle J. Mosel, David M. Reineke, Ann L. Runstrom, James H. Larson, Brent C. Knights
Benthic and planktonic inorganic nutrient processing rates at the interface between a river and lake Benthic and planktonic inorganic nutrient processing rates at the interface between a river and lake
The interface between lotic and lentic ecosystems is often a zone of intense metabolic activity, as primary production in streams and rivers can be light limited whereas nutrients often limit primary production in lake ecosystems. Our objective was to model the influence that rivermouths (the lotic-lentic interface) could have on the loads of soluble reactive phosphorus (SRP) and...
Authors
James H. Larson, Mary Anne Evans, Faith A. Fitzpatrick, Paul C. Frost, Marguerite A. Xenopoulos, William F. James, Paul C. Reneau
Mercury and water level management in lakes of northern Minnesota Mercury and water level management in lakes of northern Minnesota
Water level (WL) fluctuations substantially alter the fauna, flora, and microbial community of nearshore aquatic ecosystems. Water level management therefore has the potential to strongly influence a wide variety of ecosystem processes. Many northern temperate lake food webs experience substantial methylmercury contamination, which is partially mediated by the action of sulfate-reducing...
Authors
James H. Larson, Ryan P. Maki, Victoria Christensen, Enrika Hlavacek, Mark B. Sandheinrich, Jaime F. LeDuc, Claire Kissane, Brent C. Knights