Projects per year
Personal profile
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Dive into the research topics where Raymond Gabriel Najjar, Jr. is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Collaborative Research: How are estuarine carbon and alkalinity dynamics influenced by macrobiota?
Najjar, Jr., R. G. (PI), Fantle, M. S. (CoPI) & Herrmann, M. (CoPI)
7/1/22 → 6/30/26
Project: Research project
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NSF Convergence Accelerator Track K: Prototyping Decision Support and Monitoring Tools for Management of Salt Contamination of Water Supplies in Tidal Rivers
Li, M. (PI), Najjar, Jr., R. G. (CoPI), Kaushal, S. (CoPI), Mejia, A. I. (CoPI) & Lassiter, A. (CoPI)
1/15/24 → 12/31/25
Project: Research project
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Collaborative Research: Estuarine metabolism and gas exchange determined from dissolved oxygen time series: method development, field evaluation, and application to historical data
Najjar, Jr., R. G. (PI), Hill, K. M. (CoPI) & Herrmann, M. (CoPI)
1/1/20 → 9/30/25
Project: Research project
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REU Site: Interdisciplinary Climate Science Research at The Pennsylvania State University
Najjar, Jr., R. G. (PI), Jenkins, G. S. (CoPI) & Miles, N. L. (CoPI)
9/15/19 → 8/31/25
Project: Research project
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RESPONSE OF CARBON CYCLING TO CLIMATIC AND ANTHROPOGENIC PERTURBATIONS IN TWO NORTH AMERICAN SUBTROPICAL ESTUARIES
Najjar, Jr., R. G. (PI)
2/24/17 → 2/23/20
Project: Research project
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Benthic macrofaunal carbon fluxes and environmental drivers of spatial variability in a large coastal-plain estuary
Ajayi, S., Najjar, R., Rivest, E., Woodland, R., Friedrichs, M. A. M., St-Laurent, P. & Davis, S., Dec 8 2025, In: Biogeosciences. 22, 23, p. 7769-7795 27 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Ecosystem Metabolic Rates Estimated from Diel Oxygen Measurements in Two Subtropical Estuaries
Arriola, J. M., Najjar, R. G., Briceño, H., Hu, C., Herrmann, M. & Beck, M. W., Nov 2025, In: Estuaries and Coasts. 48, 6, 155.Research output: Contribution to journal › Article › peer-review
Open Access -
Freshwater faces a warmer and saltier future from headwaters to coasts: climate risks, saltwater intrusion, and biogeochemical chain reactions
Kaushal, S. S., Shelton, S. A., Mayer, P. M., Kellmayer, B., Utz, R. M., Reimer, J. E., Baljunas, J., Bhide, S. V., Mon, A., Rodriguez-Cardona, B. M., Grant, S. B., Newcomer-Johnson, T. A., Malin, J. T., Shatkay, R. R., Collison, D. C., Papageorgiou, K., Escobar, J., Rippy, M. A., Likens, G. E. & Najjar, R. G. & 4 others, , Apr 2025, In: Biogeochemistry. 168, 2, 31.Research output: Contribution to journal › Article › peer-review
Open Access5 Scopus citations -
Microplastic polymer accumulation, distribution, and toxicity in sediment of a freshwater tidal marsh, USA
Bussarakum, J., Drohan, P. J., Najjar, R. G., Arriola, J. M., Emili, L. A. & Warner, N. R., Dec 2025, In: Marine pollution bulletin. 221, 118566.Research output: Contribution to journal › Article › peer-review
Open Access -
The Emerging Global Threat of Salt Contamination of Water Supplies in Tidal Rivers
Li, M., Najjar, R. G., Kaushal, S., Mejia, A., Chant, R. J., Ralston, D. K., Burchard, H., Hadjimichael, A., Lassiter, A. & Wang, X., Aug 12 2025, In: Environmental Science and Technology Letters. 12, 8, p. 881-892 12 p.Research output: Contribution to journal › Review article › peer-review
Open Access6 Scopus citations