USGS divers (GLSC; Ann Arbor, Michigan) take close-up photos and videos of sampling locations before collecting samples, such as this example taken three meters below the surface in Lake Ontario that is full of Cladophora growing on rocks. Photo credit: Megan Lewan, USGS.
Megan E Lewan
(she/her/hers)Megan Lewan is an Ann Arbor-based Great Lakes Biological Science Technician, specializing in water quality as it relates to benthic nutrient interactions.
At the Great Lakes Science Center as part of the Restoration and Conservation Science branch, Megan Lewan supports the ongoing Cladophora project as a scientific SCUBA diver, boat crew member, and data analyst. The Cladophora project aims to investigate drivers of the native alga's nuisance growth, importantly: phosphorus and other nutrient inputs, invasive mussel biomass, and light penetration.
Science and Products
Multimedia related to this scientist
Captivating Cladophora
USGS divers (GLSC; Ann Arbor, Michigan) take close-up photos and videos of sampling locations before collecting samples, such as this example taken three meters below the surface in Lake Ontario that is full of Cladophora growing on rocks. Photo credit: Megan Lewan, USGS.
Cerulean Skies
Sugar Island on a beautiful blue backdrop as seen aboard the R/V Stonecat while sampling on Lake Huron near Alpena, Michigan. Photo credit: Megan Lewan, USGS.
Sugar Island on a beautiful blue backdrop as seen aboard the R/V Stonecat while sampling on Lake Huron near Alpena, Michigan. Photo credit: Megan Lewan, USGS.
Rock Bottom
A USGS diver (GLSC; Ann Arbor, Michigan) records information on her dive slate before collecting a benthic sample of submerged aquatic vegetation and invasive dreissenid mussels. Photo credit: Megan Lewan, USGS.
A USGS diver (GLSC; Ann Arbor, Michigan) records information on her dive slate before collecting a benthic sample of submerged aquatic vegetation and invasive dreissenid mussels. Photo credit: Megan Lewan, USGS.
Smiling Scientific Divers
USGS divers “smile" for the underwater camera after a successful algae and mussel collection. Photo credit: Megan Lewan, USGS.
USGS divers “smile" for the underwater camera after a successful algae and mussel collection. Photo credit: Megan Lewan, USGS.
Cold and Clear
USGS scuba diver Madeleine Giordano collects mussels and algae samples from inside her quadrat while the USGS research vessel Stonecat looms above. Photo credit: Megan Lewan, USGS.
USGS scuba diver Madeleine Giordano collects mussels and algae samples from inside her quadrat while the USGS research vessel Stonecat looms above. Photo credit: Megan Lewan, USGS.
Cladophora Survey in Lake Erie
A USGS Great Lakes Science Center contractor uses an underwater quadrat to survey the nuisance algae Cladophora and invasive dreissenid mussel populations in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
A USGS Great Lakes Science Center contractor uses an underwater quadrat to survey the nuisance algae Cladophora and invasive dreissenid mussel populations in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
Smallmouth bass seen while SCUBA diving in Lake Erie
Smallmouth bass seen while SCUBA diving in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
Smallmouth bass seen while SCUBA diving in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
SCUBA Tanks at the Ready in Lake Erie
SCUBA tanks secured as a Great Lakes Science Center small vessel motors through the water to a dive site on Lake Erie where researchers will survey for the nuisance algae, Cladophora, as part of the Great Lakes Integrated Cladophora Assessment Project.
SCUBA tanks secured as a Great Lakes Science Center small vessel motors through the water to a dive site on Lake Erie where researchers will survey for the nuisance algae, Cladophora, as part of the Great Lakes Integrated Cladophora Assessment Project.
Filtering Water with a Vacuum Pump
Filtering water with a vacuum pump to measure water quality and perform a nutrient analysis as part of the Great Lakes Integrated Cladophora Assessment Project - and - filtering COVID with a mask.
Filtering water with a vacuum pump to measure water quality and perform a nutrient analysis as part of the Great Lakes Integrated Cladophora Assessment Project - and - filtering COVID with a mask.
Science and Products
Multimedia related to this scientist
Captivating Cladophora
USGS divers (GLSC; Ann Arbor, Michigan) take close-up photos and videos of sampling locations before collecting samples, such as this example taken three meters below the surface in Lake Ontario that is full of Cladophora growing on rocks. Photo credit: Megan Lewan, USGS.
USGS divers (GLSC; Ann Arbor, Michigan) take close-up photos and videos of sampling locations before collecting samples, such as this example taken three meters below the surface in Lake Ontario that is full of Cladophora growing on rocks. Photo credit: Megan Lewan, USGS.
Cerulean Skies
Sugar Island on a beautiful blue backdrop as seen aboard the R/V Stonecat while sampling on Lake Huron near Alpena, Michigan. Photo credit: Megan Lewan, USGS.
Sugar Island on a beautiful blue backdrop as seen aboard the R/V Stonecat while sampling on Lake Huron near Alpena, Michigan. Photo credit: Megan Lewan, USGS.
Rock Bottom
A USGS diver (GLSC; Ann Arbor, Michigan) records information on her dive slate before collecting a benthic sample of submerged aquatic vegetation and invasive dreissenid mussels. Photo credit: Megan Lewan, USGS.
A USGS diver (GLSC; Ann Arbor, Michigan) records information on her dive slate before collecting a benthic sample of submerged aquatic vegetation and invasive dreissenid mussels. Photo credit: Megan Lewan, USGS.
Smiling Scientific Divers
USGS divers “smile" for the underwater camera after a successful algae and mussel collection. Photo credit: Megan Lewan, USGS.
USGS divers “smile" for the underwater camera after a successful algae and mussel collection. Photo credit: Megan Lewan, USGS.
Cold and Clear
USGS scuba diver Madeleine Giordano collects mussels and algae samples from inside her quadrat while the USGS research vessel Stonecat looms above. Photo credit: Megan Lewan, USGS.
USGS scuba diver Madeleine Giordano collects mussels and algae samples from inside her quadrat while the USGS research vessel Stonecat looms above. Photo credit: Megan Lewan, USGS.
Cladophora Survey in Lake Erie
A USGS Great Lakes Science Center contractor uses an underwater quadrat to survey the nuisance algae Cladophora and invasive dreissenid mussel populations in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
A USGS Great Lakes Science Center contractor uses an underwater quadrat to survey the nuisance algae Cladophora and invasive dreissenid mussel populations in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
Smallmouth bass seen while SCUBA diving in Lake Erie
Smallmouth bass seen while SCUBA diving in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
Smallmouth bass seen while SCUBA diving in Lake Erie as part of the Great Lakes Integrated Cladophora Assessment Project.
SCUBA Tanks at the Ready in Lake Erie
SCUBA tanks secured as a Great Lakes Science Center small vessel motors through the water to a dive site on Lake Erie where researchers will survey for the nuisance algae, Cladophora, as part of the Great Lakes Integrated Cladophora Assessment Project.
SCUBA tanks secured as a Great Lakes Science Center small vessel motors through the water to a dive site on Lake Erie where researchers will survey for the nuisance algae, Cladophora, as part of the Great Lakes Integrated Cladophora Assessment Project.
Filtering Water with a Vacuum Pump
Filtering water with a vacuum pump to measure water quality and perform a nutrient analysis as part of the Great Lakes Integrated Cladophora Assessment Project - and - filtering COVID with a mask.
Filtering water with a vacuum pump to measure water quality and perform a nutrient analysis as part of the Great Lakes Integrated Cladophora Assessment Project - and - filtering COVID with a mask.