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Explore WARC's science publications.

Filter Total Items: 3509

Effects of wastewater on forested wetlands Effects of wastewater on forested wetlands

Cycling nutrient-enriched wastewater from holding ponds through natural, forested wetlands is a practice that municipal waste treatment managers are considering as a viable option for disposing of wastewater. In this wastewater cycling process, sewer effluent that has been circulated through aerated ponds is discharged into neighboring wetland systems. To understand how wastewater...
Authors
Thomas W. Doyle

Responses of coastal wetlands to rising sea level Responses of coastal wetlands to rising sea level

Salt marsh ecosystems are maintained by the dominant macrophytes that regulate the elevation of their habitat within a narrow portion of the intertidal zone by accumulating organic matter and trapping inorganic sediment. The long-term stability of these ecosystems is explained by interactions among sea level, land elevation, primary production, and sediment accretion that regulate the...
Authors
J. T. Morris, P.V. Sundareshwar, C.T. Nietch, B. Kjerfve, Donald R. Cahoon

Effects of canopy gaps and flooding on homopterans in a bottomland hardwood forest Effects of canopy gaps and flooding on homopterans in a bottomland hardwood forest

Canopy disturbance is a major factor affecting forest structure and composition and, as a result of habitat alterations, can influence insect communities. We initiated a field study to quantify the effects of canopy disturbance on aerial insect abundance and distribution within a bottomland hardwood forest along the Cache River, Arkansas, USA. We used passive flight-intercept traps to...
Authors
L.E. Gorham, S.L. King, B. D. Keeland, S. Mopper

Mercury in feathers from Chilean birds: Influence of location, feeding strategy and taxonomic affiliation Mercury in feathers from Chilean birds: Influence of location, feeding strategy and taxonomic affiliation

This study reports baseline concentrations of mercury (Hg) in feathers from different species of birds sampled at various locations off the Chilean coast (Southeastern Pacific). Hg concentrations were evaluated in relation to geographic location, taxonomic affiliation, and feeding strategies. Between January and March of 1995, we collected mature contour feathers from 116 birds belonging...
Authors
H. G. Ochoa-Acuna, M. S. Sepulveda, T. S. Gross

High-precision measurements of wetland sediment elevation. I. Recent improvements to the sedimentation--erosion table High-precision measurements of wetland sediment elevation. I. Recent improvements to the sedimentation--erosion table

The sedimentation-erosion table (SET) developed by Boumans and Day (1993) is herein renamed the surface elevation table (SET) to better reflect the conceptual view of the processes being measured. The SET was designed for making high-resolution measurements of small-scale changes in elevation of loose, unconsolidated sediments in shallow water and mudflat habitats. The SET has undergone...
Authors
Donald R. Cahoon, J.C. Lynch, P. Hensel, R. Boumans, B.C. Perez, B. Segura, J.W. Day

Mangrove isotopic (δ15N and δ13C) fractionation across a nitrogen vs. phosphorus limitation gradient Mangrove isotopic (δ15N and δ13C) fractionation across a nitrogen vs. phosphorus limitation gradient

Mangrove islands in Belize are characterized by a unique switching from nitrogen (N) to phosphorus (P) limitation to tree growth from shoreline to interior. Fertilization has previously shown that Rhizophora mangle (red mangrove) fringe trees (5–6 m tall) growing along the shoreline are N limited; dwarf trees (≤ 1.5 m tall) in the forest interior are P limited; and transition trees (2–4...
Authors
Karen L. McKee, Ilka C. Feller, Marianne Popp, Wolfgang Wanek

Test of salt marsh as a site of production and export of fish biomass with implications for impoundment management and restoration Test of salt marsh as a site of production and export of fish biomass with implications for impoundment management and restoration

Salt marshes are among the most productive ecosystems in the world, and although they are thought to enhance the productivity of open estuarine waters, the mechanism by which energy transfer occurs has been debated for decades. One possible mechanism is the transfer of saltmarsh production to estuarine waters by vagile fishes and invertebrates. Saltmarsh impoundments in the Indian River...
Authors
Philip W. Stevens

Water Resources Data, Florida, Water Year 2001, Volume 4. Northwest Florida Water Resources Data, Florida, Water Year 2001, Volume 4. Northwest Florida

This report series for the 2001 water year for the state of Florida consists of records for continuous or daily discharge for 387 streams, periodic discharge for 14 streams, continuous or daily stage for 147 streams, periodic stage for 2 streams, peak stage and discharge for 8 streams, continuous or daily elevations for 14 lakes, periodic elevations for 47 lakes, continuous ground-water...
Authors
Water Resources Division U.S. Geological Survey

Modeling ecosystem and population dynamics on the South Florida hydroscape Modeling ecosystem and population dynamics on the South Florida hydroscape

Abstract not supplied at this time
Authors
D.L. DeAngelis, S. Bellmund, W.M. Mooij, M.P. Nott, E.J. Comiskey, L.J. Gross, W.M. Wolff
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