Browsing Research Articles, Department of Biological Sciences by Issue Date
Now showing items 1-20 of 305
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on fitting truncated lognormal distribution to species-abundance data using maximum likelihood estimation
(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
(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
(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
(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 ... -
patterns of coexistence in synaptomys cooperi and microtus pennsylvanicus
(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 ... -
plant-soil processes in eriophorum vaginatum tussock tundra in Alaska: a systems modeling approach
(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 ... -
comparative water relations of phreatophytes in the Sonoran Desert of California
(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
(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
(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 ... -
phosphorus spiraling in a woodland stream: seasonal-variations
(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, ... -
algal periphyton growth on nutrient-diffusing substrates: an in situ bioassay
(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 ... -
the ecophysiological significance of leaf movements in rhododendron-maximum
(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
(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
(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
(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. ... -
Effects of Changing Density and Food Level on Metamorphosis of a Desert Amphibian, Scaphiopus Couchii
(Ecological Society of America, 1994-06)Amphibians that breed in temporary ponds provide a good opportunity to study the ecological and evolutionary consequences of environmental variability. Ephemeral aquatic habitats provide larval amphibians a transient and ... -
Sediment-Water Column Oxygen and Nutrient Fluxes in Nearshore Environments of the Lower Delmarva Peninsula, USA
(Inter-Research, 1995)Sediment-water column exchanges of oxygen, dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP) were measured in situ over an annual cycle for sandy and silt-clay sediment types in a shallow Chesapeake ... -
developing a field of landscape ecotoxicology
(Ecological Society of America, 1996-08)Since toxicants are spread over ecological landscapes, it seems likely that they have effects at that level of ecological organization. Landscape ecotoxicology examines the effects of toxic chemicals on larger scales than ... -
do similar communities develop in similar sites? a test with zooplankton structure and function
(Ecological Society of America, 1998-08)McCune and Alien (1985) asked the question "Will similar forests develop on similar sites?" and concluded that dissimilar old-growth forests had developed on similar sites due to historical factors (colonization, disturbance, ... -
interaction of substrate and nutrient availability on wood biofilm processes in streams
(Ecological Society of America, 1998-09)We examined the effect of decomposing leaf litter and dissolved inorganic nutrients on the heterotrophic biofilm of submerged wood in streams with and without leaves. Leaf litter was excluded from one headwater stream in ...
