Definitions of critical environmental conditions for selected Chesapeake Bay finfishes exposed to acidic episodes in spawning and nursery habitats. Final report
Definitions of critical environmental conditions associated with acidic episodes are defined for yellow perch, alewife, blueback herring, American shad, and white perch, based on a review of field and laboratory data. These species are an important biological resource in the mid-Atlantic Coastal Plain. Values for blueback herring and alewife reproduction are an acid pulse between pH 5.5 and 6.2 with dissolved Ca at least 2 mg/l, with total monomeric Al levels between 15 and 137 microgram/l. Critical acidic conditions for American shad reproduction are an acid pulse between pH 5.7 and 6.7, dissolved Ca at least 2 micrograms/l, and total monomeric Al levels between 0 and 137 micrograms/l. Using data from the congeneric striped bass as a proxy, critical acidic conditions for white perch are an acid pulse between pH 6.5 and 6.7, total monomeric Al concentration of 25 microgram/l persisting for 7 days, and dissolved Ca at least 2 microgram/l. Based on a combination of life stage exposure and tolerance to acidic conditions the species can be ranked from high to low potential with regard to risks posed by acidic episodes on their early life stages: white perch, alewife/blueback herring, American shad, yellow perch.
- Research Organization:
- Johns Hopkins Univ., Shady Side, MD (USA). Aquatic Ecology Section
- OSTI ID:
- 6959682
- Report Number(s):
- PB-90-161928/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALUMINIUM
ECOLOGICAL CONCENTRATION
CHESAPEAKE BAY
WATER POLLUTION
FISHES
SENSITIVITY
FOSSIL-FUEL POWER PLANTS
ENVIRONMENTAL IMPACTS
ACIDIFICATION
CALCIUM
EGGS
HABITAT
PH VALUE
PROGRESS REPORT
SITE SELECTION
ALKALINE EARTH METALS
ANIMALS
AQUATIC ORGANISMS
ATLANTIC OCEAN
BAYS
DOCUMENT TYPES
ELEMENTS
METALS
POLLUTION
POWER PLANTS
SEAS
SURFACE WATERS
THERMAL POWER PLANTS
VERTEBRATES
200500* - Fossil-Fueled Power Plants- Environmental Aspects- (1990-)
540320 - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology