Browsing Faculty Works, Department of Biological Sciences by Issue Date

On fitting truncated lognormal distribution to species-abundance data using maximum likelihood estimation

Slocomb, J.; Stauffer, B.; Dickson, K. L. (Ecological Society of America, 1977)

The truncated lognormal distribution can be used to graduate certain species-abundance data, provided that estimates of the location and scale parameters are obtained. A computer program has been written which groups the ...

Abundance and Size Distribution of Particulate Matter Fractions Near a Caribbean Bank Barrier Reef

Simmons, George M., Jr. (Inter-Research, 1979)

Recent research indicates that corals have the ability to occupy several trophic levels and that particulate matter (PM) appears to play a major role in meeting their daily energy requirements. A study was undertaken to ...

Water relations of the eggs of anolis-auratus and anolis-limifrons

Andrews, Robin M.; Sexton, Owen J. (Ecological Society of America, 1981)

Eggs of Anolis auratus and Anolis limifrons were incubated on soil substrates differing in matric potential of soil water. Eggs of both species hatched after a mean incubation time of 44 d on soils with matric potentials ...

Diurnal and seasonal water relations of the desert phreatophyte prosopis-glandulosa (honey mesquite) in the sonoran desert of california

Nilsen, E. T.; Sharifi, M. R.; Rundel, P. W.; Jarrell, W. M.; Virginia, R. A. (Ecological Society of America, 1983)

Diurnal and Seasonal water relations were monitored in a population of Prosopis glandulosa var. torreyana in the Sonoran Desert of southern California. Prosopis glandulosa at this research site acquired its water from a ...

Plant-soil processes in eriophorum vaginatum tussock tundra in alaska: a systems modeling approach

Miller, P. C.; Miller, P. M.; Blakejacobson, M.; Chapin, F. S.; Everett, K. R.; Hilbert, D. W.; Kummerow, J.; Linkins, A. E.; Marion, G. M.; Oechel, W. C.; Roberts, S. W.; Stuart, L. (Ecological Society of America, 1984)

The Arctic Tundra Simulator (ARTUS) is a computer-based simulation model of Eriophorum vaginatum tussock tundra ecosystems found in north central Alaska. ARTUS simulates the annual patterns of heat and water balance, carbon ...

Patterns of coexistence in synaptomys cooperi and microtus pennsylvanicus

Linzey, A. V. (Ecological Society of America, 1984)

The microtine rodents Synaptomys cooperi and Microtus pennsylvanicus are sympatric, have a similar life styles, and occur in the same general habitats. The object of this study was to determine the importance of competition ...

Comparative water relations of phreatophytes in the sonoran desert of california

Nilsen, E. T.; Sharifi, M. R.; Rundel, P. W. (Ecological Society of America, 1984)

The seasonal and diurnal water relations were compared among six desert phreatophytes, two evergreen shrubs, and one deciduous shrub. All species were located in one wash woodland in the Sonoran Desert of southern California. ...

Cellulose digestion and assimilation by three leaf-shredding aquatic insects

Sinsabaugh, R. L.; Linkins, A. E.; Benfield, E. F. (Ecological Society of America, 1985)

The capacity of three leaf-shredding aquatic insects, Pteronarcys proteus (Plecoptera: Pteronarcidae), Tipula abdominalis (Diptera: Tipulidae), and Pycnopsyche luculenta (Trichoptera: Limnephilidae), to digest and assimilate ...

Energy costs of subduing and swallowing prey for a lizard

Pough, F. Harvey; Andrews, Robin M. (Ecological Society of America, 1985)

We measured the oxygen consumption (aerobic energy cost) and lactic acid production (anaerobic energy cost) of scincid lizards, Chalcides ocellatus, eating domestic crickets. Aerobic metabolism accounted for 90% or more ...

Algal periphyton growth on nutrient-diffusing substrates: an in situ bioassay

Fairchild, G. W.; Lowe, R. L.; Richardson, W. B. (Ecological Society of America, 1985)

Differences in nutrient limitation for dominant species within an algal periphyton community were determined using additions of N and P supplied by nutrient-diffusing artificial substrates. Sealed clay flowerpots were ...

Phosphorus spiraling in a woodland stream: seasonal-variations

Mulholland, P. J.; Newbold, J. D.; Elwood, J. W.; Ferren, L. A.; Webster, J. R. (Ecological Society of America, 1985)

Four radiotracer releases were performed over an annual period in 1981-1982 to determine seasonal variation in indices and pathways of phosphorus spiralling in Walker Branch, a small woodland stream in eastern Tennessee, ...

The ecophysiological significance of leaf movements in rhododendron-maximum

Bao, Y. J.; Nilsen, E. T. (Ecological Society of America, 1988-10)

The patterns of leaf movements and their environmental stimuli have been documented for over a century. Although there have been several studies on the physiological significance of heliotropisms, thermotropic movements ...

Biological integrity: a long-neglected aspect of water resource management

Karr, J. R. (Ecological Society of America, 1991-02)

Water of sufficient quality and quantity is critical to all life. Increasing human population and growth of technology require human society to devote more and more attention to protection of adequate supplies of water. ...

Population stability of a tropical lizard

Andrews, Robin M. (Ecological Society of America, 1991-08)

Populations of the lizard Anolis limifrons were censused for 19 yr at the Lutz site on Barro Colorado Island (BCI) and for 4 yr at 20 additional sites in central Panama. Census data provided estimates of population density ...

Importance of Submarine Groundwater Discharge (SGWD) and Seawater Cycling to Material Flux across Sediment Water Interfaces in Marine Environments

Simmons, George M., Jr. (Inter-Research, 1992)

The movement of water across sediment/water interfaces is very important to the ecology of aquatic habitats. Submarine groundwater discharge (SGWD) occurs primarily by advective flow and may be due to a variety of factors. ...