A5018887393- Marine Bivalve and Aquaculture Studies
- Marine and fisheries research
- Isotope Analysis in Ecology
- Fish Ecology and Management Studies
- Marine animal studies overview
- Ocean Acidification Effects and Responses
- Marine Biology and Ecology Research
- Geology and Paleoclimatology Research
- Fish Biology and Ecology Studies
- Paleontology and Stratigraphy of Fossils
- Extraction and Separation Processes
- Aquaculture Nutrition and Growth
- Mercury impact and mitigation studies
- Radioactive element chemistry and processing
- Analytical chemistry methods development
- Ichthyology and Marine Biology
- Heavy metals in environment
- Environmental Toxicology and Ecotoxicology
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
Makah Tribal Council
2007-2021
Huazhong Agricultural University
2008-2012
China University of Geosciences (Beijing)
2002-2004
Vancouver Island University
1999-2001
Stable carbon isotope ratios ( 13 C) were measured in annual layers of otoliths Atlantic cod (Gadus morhua) from the northeastern Scotian Shelf, Canada. Layers deposited during first 4-6 years otolith growth increased C minimum values between -5 and -2.5 to a maximum near 0. This pattern increase was independent which fish collected. formed after reaching value displayed decreasing or nearly constant isotopic ratios. Early rise may be combined result (i) decrease fraction metabolic...
The feasibility of stable oxygen and carbon isotope ratio (δ 18 O δ 13 C) analyses in sagittal otoliths sockeye salmon (Oncorhynchus nerka) was tested by analyzing the seasonal annual otolith zones 44 samples collected from different localities northeast Pacific coast. C values these ranged -14.23 to +1.62 -15.18 -3.17, respectively. variations can be divided into two stages freshwater (-14.2 -2.5) marine (-2.5 +1.6) that were consistent with life history juvenile adult stages....
Otoliths of Pacific herring (Clupea pallasi) were collected from Puget Sound, Washington, and analysed for oxygen carbon isotope ratios (δ 18 O δ 13 C). It was expected that if adult spawn at different localities with C values, these variations would constitute a natural tag can be used to distinguish the spawning stocks. For test project, we took aragonite powder samples surface otolith nuclei second summer rings, respectively. Isotopic composition Georgia Strait had lowest values (from...
Abstract The management of many marine fish stocks suffers from a lack genetic data or insignificant differentiations, particularly for the commercially important groundfish along U.S. Pacific coast. In this study, we investigated large number otoliths various species coasts Washington and Oregon analyzed them stable oxygen ( 18 O/ 16 O, δ O) carbon isotope ratios 13 C/ 12 C, C). isotopic results correlation O versus C hake Merluccius productus , sablefish Anoplopoma fimbria halibut...
Abstract The sudden collapse of Atlantic cod (Gadus morhua) may relate to ocean climate, or regime shifts as demonstrated in production Pacific salmon. This paper reports the results stable oxygen isotope ratio analyses (18O/16O δ18OA) from 91 otoliths over a period about 20 years. Seasonal δ18OA variations individual started at an initial value −0.5 0‰ VPDB, and then reached level range +2.5 +3.5‰ VPDB after 4–5 low values correspond natal sources mature cod, while higher represent water...
The Xiangtan manganese deposit (XTM) was formerly considered a supergene oxide in South China. Here, we report upon new identification of naturally outcropping cryptomelane from the XTM, rather than psilomelane and pyrolusite, as it previously considered. Most crystals aggregates XTM are acicular, with diameter 20 nm to 120 nm. There large pseudotetragonal tunnels formed by [MnO6] octahedral double chains an aperture 0.462 × 0.466 nm2. importance our find relates not only resource...
This paper reports a new result for the isotopic differences between left and right sagittal otoliths of Pacific halibut Hippoglossus stenolepis, flatfish with both eyes on side. Using microsampling techniques we were able to collect subsamples from nucleus 5th 8th annulus 63 pairs halibut otoliths. Isotopic analyses δ13C showed that there was significant difference side otoliths from in Washington Coast Puget Sound samples; but no 5th and annuli same These results were difficult be...
Stable carbon isotope ratios (13C) were measured in annual layers of otoliths Atlantic cod (Gadus morhua) from the northeastern Scotian Shelf, Canada. Layers deposited during first 4-6 years otolith growth increased 13C minimum values between -5‰ and -2.5‰ to a maximum near 0‰. This pattern increase was independent which fish collected. formed after reaching value displayed decreasing or nearly constant isotopic ratios. Early rise may be combined result (i) decrease fraction metabolic...