Effects of inorganic turbidity and reservoir floods on the feeding and population dynamics of Cladoceran zooplankton

Thesis/Dissertation · Fri Jan 01 00:00:00 EST 1988

OSTI ID:5650324

Shuman, J R

Clearance rates of {sup 32}P-labeled yeast cell tracer particles and gravimetric seston analysis were used to estimate in situ seston ingestion rates of Daphnia parvula and Bosmina along the seston gradient in Tuttle Creek Reservoir, near Manhattan, Kansas. An ingestion rate depression occurred for both species at the highest seston concentration. The smallest animals, Bosmina, had a lower incipient limiting concentration and exhibited a stronger ingestion rate depression. The fecundity and abundance of Daphnia parvula, grown in enclosures along the seston gradient prior to the ingestion rate measurements, were highest at the river inflow region. Reservoir Bosmina, however, were least abundant and had the lowest fecundity at the river inflow region. The abundance of Bosmina, calanoid copepods, and cyclopoid copepods were lower following large storm inflows in the late spring of 1983 and 1984, while the abundance of Diaphanosoma and Moina were similar. Both open reservoir and in situ enclosure populations of Daphnia pulex were reduced following the storm inflow, while only enclosure populations of Daphnia parvula were lower. Diaphanosoma and calanoid copepods dominated the zooplankton during sampling from spring through fall 1984, particularly in midsummer when temperatures were greater than 25{degree}C. Daphnids dominated numerically during the fall baseflow period.

• Research Organization: Kansas State Univ., Manhattan, KS (USA)
• OSTI ID: 5650324
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
TURBIDITY
BIOLOGICAL EFFECTS
WATER RESERVOIRS
FLOODS
ZOOPLANKTON
POPULATION DYNAMICS
COPEPODS
DAPHNIA
INGESTION
KANSAS
PHOSPHORUS 32
SEASONAL VARIATIONS
TRACER TECHNIQUES
YEASTS
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BRANCHIOPODS
CRUSTACEANS
DAYS LIVING RADIOISOTOPES
DISASTERS
EUMYCOTA
FEDERAL REGION VII
FUNGI
INTAKE
INVERTEBRATES
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MICROORGANISMS
NORTH AMERICA
NUCLEI
ODD-ODD NUCLEI
PHOSPHORUS ISOTOPES
PLANKTON
PLANTS
RADIOISOTOPES
SURFACE WATERS
USA
VARIATIONS
520101* - Environment
Aquatic- Basic Studies- Radiometric Techniques- (-1989)