A5003004328- Groundwater and Isotope Geochemistry
- Geology and Paleoclimatology Research
- Radioactive contamination and transfer
- Water Quality and Resources Studies
- Geochemistry and Elemental Analysis
- Groundwater flow and contamination studies
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Radioactivity and Radon Measurements
- Methane Hydrates and Related Phenomena
- Radioactive element chemistry and processing
- Geological formations and processes
- Mercury impact and mitigation studies
- Underwater Acoustics Research
- Coral and Marine Ecosystems Studies
- Microplastics and Plastic Pollution
- Ocean Acidification Effects and Responses
- Geophysical and Geoelectrical Methods
- Coastal and Marine Dynamics
- Geophysical Methods and Applications
- Heavy metals in environment
- Recycling and Waste Management Techniques
- Coastal wetland ecosystem dynamics
- Marine Bivalve and Aquaculture Studies
- Oceanographic and Atmospheric Processes
International University of Monaco
2016-2025
United States Geological Survey
2012-2024
Pacific Science Center
2012-2024
Pacific Coastal and Marine Science Center
2012-2023
Escuela Superior Politecnica del Litoral
2021
Swedish Museum of Natural History
2021
Pennsylvania Academy of Science
2012
Pacific Island Ecosystems Research Center
2006-2011
University of South Florida
2007
University of South Florida St. Petersburg
2001-2006
Sea-level rise and wave-driven flooding will damage freshwater resources of most atolls soon render them uninhabitable.
Microplastics (MP) are a pollutant that can be found in all marine ecosystems. Currently one of the most used forms to classify them is through their size. However, current size categories use cover an extremely wide range sizes and not based on biological or physical basis. Thus, here we propose harmonize MP with ones already plankton research for more than 120 years. This will allow implementation refined classes connected reality also enable comparison myriad literature new work MP.
A Karenia brevis Harmful Algal Bloom affected coastal waters shallower than 50 m off west‐central Florida from January 2005 through 2006, showing a sustained anomaly of ∼1 mg chlorophyll −3 over an area up to 67,500 km 2 . Red tides occur in the same (approximately 26–29°N, 82–83°W) almost every year, but intense bloom led widespread hypoxic zone (dissolved oxygen <2 L −1 ) that caused mortalities benthic communities, fish, turtles, birds, and marine mammals. Runoff alone provided...
Research Article| January 01, 2003 The Behavior of U- and Th-series Nuclides in Groundwater Donald Porcelli; Porcelli Department Earth Sciences, University Oxford Parks Rd,. Oxford, OX1 3PR, United Kingdom, don.porcelli@earth.ox.ac.uk Search for other works by this author on: GSW Google Scholar Peter W. Swarzenski Coastal Marine Geology Program, US Geological Survey, St. Petersburg, Florida, 33701, USA, pswarzen@usgs.gov Reviews Mineralogy Geochemistry (2003) 52 (1): 317–361....
Significance Understanding how climate change affects ecosystem productivity is critical for managing fisheries and sustaining biodiversity. African lakes are warming rapidly, potentially jeopardizing both their high endemic biodiversity important fisheries. Using paleoecological records from Lake Tanganyika, we show that declines in commercially fishes molluscs have accompanied lake warming. Ongoing fishery species began well before the advent of commercial fishing mid-20th century. Warming...
Organic contaminants, such as pharmaceuticals and personal care products (PPCPs), pose a risk to water quality the health of ecosystems. This study was designed determine if coastal community lacking point sources, waste treatment plant effluent, could release PPCPs, herbicides, plasticizers at detectable levels their surface groundwater. Research conducted in Liberty Bay, an embayment within Puget Sound, where 70% population (∼10,000) uses septic systems. Sampling included collection...
Abstract Ocean acidification (OA), the gradual decline in ocean pH and [ ] caused by rising levels of atmospheric CO 2 , poses a significant threat to coral reef ecosystems, depressing rates calcium carbonate (CaCO 3 ) production, enhancing bioerosion dissolution. As globally, there is increasing emphasis on managing local stressors that can exacerbate vulnerability reefs effects OA. We show sustained, nutrient rich, lower submarine groundwater discharging onto nearshore off west Maui lowers...
Plastic pollution has become one of the most pressing environmental challenges and received commensurate widespread attention. Although it is a top priority for policymakers scientists alike, knowledge required to guide decisions, implement mitigation actions, assess their outcomes remains inadequate. We argue that an integrated, global monitoring system plastic needed provide comprehensive, harmonized data environmental, societal, economic assessments. The initial focus on marine ecosystems...
Ocean acidification (OA) is a serious consequence of climate change with complex organism-to-ecosystem effects that have been observed through field observations but are mainly derived from experimental studies. Although OA trends and the resulting biological impacts likely exacerbated in semi-enclosed highly populated Mediterranean Sea, some fundamental knowledge gaps still exist. These at tributed to both uneven capacity for research exists between countries, as well subtle long-term...
Ocean acidification (OA) affects the physiology and behaviour of some marine organisms, impacting their development metabolism during vulnerable early-life stages. Among them, embryo cuttlefish develops for about two months in encapsulated eggs with harsh perivitelline conditions hypoxia hypercapnia, potentially worsened by OA. In this study, common Sepia officinalis embryos juveniles, were exposed to five pH (pHT 8.08 7.43). Growth, metabolite profiles explored embryonic period up 10...
We report a simple new technique for measuring low-level radium isotopes (224Ra and 226Ra) in natural waters. The present waters is first preconcentrated onto MnO2-coated acrylic fiber (Mn fiber) column mode. radon produced from the adsorbed then circulated through closed air-loop connected to commercial radon-in-air monitor. monitor counts alpha decays of daughters (polonium isotopes) which are electrostatically collected silicon semiconductor detector. Count data energy-specific windows,...
A high‐resolution, stationary geophysical and geochemical survey was conducted at Dor Beach, Israel, to examine the shallow coastal hydrogeology its control on exchange of submarine groundwater with Mediterranean Sea. Time‐series resistivity profiles using a new 56 electrode (112‐m long) marine cable produced detailed fresh water/salt water interface subtle response this tidal excursions other forcing factors. Such information, when ground‐truthed representative pore salinities formation...