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givenName: Stephen | givenName: Stephen | ||
mainEntityOfPage: https://orcid.org/0000-0002-4774-0415 | mainEntityOfPage: https://orcid.org/0000-0002-4774-0415 | ||
OpenAlex: | |||
created_date: '2023-07-21' | |||
display_name: Stephen P. Opsahl | |||
display_name_alternatives: | |||
- Stephen P. Opsahl | |||
- Stephen Opsahl | |||
- S. Opsahl | |||
- S. P. Opsahl | |||
ids: | |||
openalex: https://openalex.org/A5048777739 | |||
orcid: https://orcid.org/0000-0002-4774-0415 | |||
last_known_institutions: | |||
- country_code: US | |||
display_name: United States Geological Survey | |||
id: https://openalex.org/I1286329397 | |||
lineage: | |||
- https://openalex.org/I1286329397 | |||
- https://openalex.org/I1335927249 | |||
ror: https://ror.org/035a68863 | |||
type: government | |||
orcid: https://orcid.org/0000-0002-4774-0415 | |||
topics: | |||
- count: 18 | |||
display_name: Stable Isotope Analysis of Groundwater and Precipitation | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
id: https://openalex.org/fields/19 | |||
id: https://openalex.org/T10398 | |||
subfield: | |||
display_name: Geochemistry and Petrology | |||
id: https://openalex.org/subfields/1906 | |||
- count: 18 | |||
display_name: Water Quality and Hydrogeology Research | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T12773 | |||
subfield: | |||
display_name: Water Science and Technology | |||
id: https://openalex.org/subfields/2312 | |||
- count: 12 | |||
display_name: Groundwater Flow and Transport Modeling | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10894 | |||
subfield: | |||
display_name: Environmental Engineering | |||
id: https://openalex.org/subfields/2305 | |||
- count: 11 | |||
display_name: Marine Biogeochemistry and Ecosystem Dynamics | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
id: https://openalex.org/fields/19 | |||
id: https://openalex.org/T10032 | |||
subfield: | |||
display_name: Oceanography | |||
id: https://openalex.org/subfields/1910 | |||
- count: 9 | |||
display_name: Biogeochemical Cycling of Nutrients in Aquatic Ecosystems | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T11311 | |||
subfield: | |||
display_name: Environmental Chemistry | |||
id: https://openalex.org/subfields/2304 | |||
- count: 7 | |||
display_name: Marine Microbial Diversity and Biogeography | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T11791 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
- count: 7 | |||
display_name: Importance and Conservation of Freshwater Biodiversity | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10302 | |||
subfield: | |||
display_name: Nature and Landscape Conservation | |||
id: https://openalex.org/subfields/2309 | |||
- count: 6 | |||
display_name: Application of Stable Isotopes in Trophic Ecology | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T12073 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
- count: 5 | |||
display_name: Marine Biodiversity and Ecosystem Functioning | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
id: https://openalex.org/fields/19 | |||
id: https://openalex.org/T10765 | |||
subfield: | |||
display_name: Oceanography | |||
id: https://openalex.org/subfields/1910 | |||
- count: 5 | |||
display_name: Karst Hydrogeology and Geohazards | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
id: https://openalex.org/fields/19 | |||
id: https://openalex.org/T12083 | |||
subfield: | |||
display_name: Earth-Surface Processes | |||
id: https://openalex.org/subfields/1904 | |||
- count: 4 | |||
display_name: Climate Change and Paleoclimatology | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
id: https://openalex.org/fields/19 | |||
id: https://openalex.org/T10017 | |||
subfield: | |||
display_name: Atmospheric Science | |||
id: https://openalex.org/subfields/1902 | |||
- count: 4 | |||
display_name: Global Methane Emissions and Impacts | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T11588 | |||
subfield: | |||
display_name: Global and Planetary Change | |||
id: https://openalex.org/subfields/2306 | |||
- count: 4 | |||
display_name: Hydrological Modeling and Water Resource Management | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10330 | |||
subfield: | |||
display_name: Water Science and Technology | |||
id: https://openalex.org/subfields/2312 | |||
- count: 3 | |||
display_name: Importance of Mangrove Ecosystems in Coastal Protection | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10779 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
- count: 3 | |||
display_name: Antibiotic Resistance in Aquatic Environments and Wastewater | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10419 | |||
subfield: | |||
display_name: Pollution | |||
id: https://openalex.org/subfields/2310 | |||
- count: 3 | |||
display_name: Anaerobic Methane Oxidation and Gas Hydrates | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10995 | |||
subfield: | |||
display_name: Environmental Chemistry | |||
id: https://openalex.org/subfields/2304 | |||
- count: 3 | |||
display_name: Ecological Impact of Freshwater Mussels | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T12097 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
- count: 3 | |||
display_name: Ecological Dynamics of Riverine Landscapes | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10577 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
- count: 3 | |||
display_name: Eutrophication and Harmful Algal Blooms | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10236 | |||
subfield: | |||
display_name: Environmental Chemistry | |||
id: https://openalex.org/subfields/2304 | |||
- count: 3 | |||
display_name: Resilience of Traditional Irrigation Communities in Southwest USA | |||
domain: | |||
display_name: Social Sciences | |||
id: https://openalex.org/domains/2 | |||
field: | |||
display_name: Social Sciences | |||
id: https://openalex.org/fields/33 | |||
id: https://openalex.org/T13939 | |||
subfield: | |||
display_name: Anthropology | |||
id: https://openalex.org/subfields/3314 | |||
- count: 2 | |||
display_name: Evolutionary Patterns in Subterranean Environments | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
id: https://openalex.org/fields/19 | |||
id: https://openalex.org/T11926 | |||
subfield: | |||
display_name: Paleontology | |||
id: https://openalex.org/subfields/1911 | |||
- count: 2 | |||
display_name: Impacts of Crayfish Invasions on Freshwater Ecosystems | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T11004 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
- count: 2 | |||
display_name: Atmospheric Aerosols and their Impacts | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
id: https://openalex.org/fields/19 | |||
id: https://openalex.org/T10075 | |||
subfield: | |||
display_name: Atmospheric Science | |||
id: https://openalex.org/subfields/1902 | |||
- count: 2 | |||
display_name: Soil Erosion and Agricultural Sustainability | |||
domain: | |||
display_name: Life Sciences | |||
id: https://openalex.org/domains/1 | |||
field: | |||
display_name: Agricultural and Biological Sciences | |||
id: https://openalex.org/fields/11 | |||
id: https://openalex.org/T10889 | |||
subfield: | |||
display_name: Soil Science | |||
id: https://openalex.org/subfields/1111 | |||
- count: 1 | |||
display_name: Influence of Land Use on Stream Ecosystems | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10669 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
updated_date: '2024-05-20T12:31:19.675546' | |||
USGS Staff Profile: | USGS Staff Profile: | ||
'@context': https://schema.org | '@context': https://schema.org |