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Articles 33391 - 33420 of 40091
Full-Text Articles in Entire DC Network
Food Habits Of Mountain Lions In The Trans-Pecos Region Of Texas, Rosemary A. Heinen, S. Kemble Canon
Food Habits Of Mountain Lions In The Trans-Pecos Region Of Texas, Rosemary A. Heinen, S. Kemble Canon
Great Plains Wildlife Damage Control Workshop Proceedings
Information regarding mountain lion (Felis concolor) food habits is relatively scarce overall, and this is particularly true in the Trans-Pecos region of Texas. Most information currently available is from Big Bend National Park where livestock are excluded and game animals are not actively managed. This study involved the analysis of 32 mountain lion stomachs collected throughout the Trans-Pecos over a 14 month period. Deer (Odocoileus spp.) and javelina (Tayassu tajacu) were the predominate prey species, each occurring in 39% of the stomachs analyzed. Domestic livestock was found in 9% of the total stomachs and non-game …
Depredation On Artificial Ground Nests By Japanese Macaques: The Unspoken Exotic In Texas, Justin G. Feild, Scott E. Henke, Justin G. Mccoy
Depredation On Artificial Ground Nests By Japanese Macaques: The Unspoken Exotic In Texas, Justin G. Feild, Scott E. Henke, Justin G. Mccoy
Great Plains Wildlife Damage Control Workshop Proceedings
Japanese macaques (Macaca fuscata) are old world monkeys that were introduced to Texas in 1972, and their population has since increased to over 800 individuals. Macaques are considered to be primarily vegetarian but will opportunistically forage on a variety of food items. Therefore, the objective of this study was to determine if macaques impact the nest success of bobwhite quail (Colinus virginianus). In June 1996, 20 artificial ground nests simulating those of bobwhite quail were placed randomly in areas with and without macaques. Nests were checked at 3-day intervals for 24 days and nest success was …
Livestock Protection Collar Use In California, Robert M. Timm, Gary D. Simmons, John R. Hays
Livestock Protection Collar Use In California, Robert M. Timm, Gary D. Simmons, John R. Hays
Great Plains Wildlife Damage Control Workshop Proceedings
Use of the Livestock Protection Collar (LP Collar) containing sodium fluoroacetate began on a research basis in October 1995 at the UC Hopland Research and Extension Center. Registration for use in California only by certified ADC specialists was granted in early 1996, and operational use in three north coast counties began in early 1997. Preparation for beginning operational use dealt with concerns regarding user certification, hazardous waste disposal, and public relations. We report on the success to date of using LP Collars to remove sheep-killing coyotes. Incidents in which non-target predators including mountain lions have attacked LP-Collared sheep are also …
Sheep Predation By Coyotes: A Behavioral Analysis, Ray T. Sterner
Sheep Predation By Coyotes: A Behavioral Analysis, Ray T. Sterner
Great Plains Wildlife Damage Control Workshop Proceedings
This paper presents (1) a brief overview of several concepts important to predator-prey behaviors of coyotes, (2) results of an enclosure study of sheep-attack, -immobilization, and -ingestion responses involving 12 male coyotes (Canis latrans) that were paired with sheep after observing various sheep- predation events by conspecifics, and (3) an analysis of sheep predation based upon operant learning principles. Contrasts between comparative psychological and ethological approaches to the study of animal behavior are described. Results of the enclosure study (0.127-ha) showed that following matched-length trials of observing predation, non-predation, and lone sheep, 3, 2, and 1 coyote(s), respectively, …
Dealing With Wildlife Professionals, Scott E. Hygnstrom
Dealing With Wildlife Professionals, Scott E. Hygnstrom
Great Plains Wildlife Damage Control Workshop Proceedings
A relatively small, but highly influential audience that we need to address includes all professional wildlife biologists. But wildlife biologists come in all shapes and sizes. To be an effective educator, you need to properly identify your audience and a proper medium in which to deliver your message.
Experimental Rodent Control At The Beef Cattle Research Center, Kansas State University, Philip S. Gipson, Charles D. Lee, Matthew L. Burenheide, Jan F. Kamler, Justin E. Kretzer, Daniel J. Martin, Celine C. Perchellet, Chad M. Willemssen, Jennifer Weins
Experimental Rodent Control At The Beef Cattle Research Center, Kansas State University, Philip S. Gipson, Charles D. Lee, Matthew L. Burenheide, Jan F. Kamler, Justin E. Kretzer, Daniel J. Martin, Celine C. Perchellet, Chad M. Willemssen, Jennifer Weins
Great Plains Wildlife Damage Control Workshop Proceedings
Little research has been conducted on rodent control techniques in livestock feedlot situations. We tested efficacy of several treatments including two anticoagulant baits, an acute toxicant and snap trapping to reduce rodent populations at the Beef Cattle Research Center at Kansas State University. Among the four treatments utilized, Contrac®, Blox®, and Ditrac® Tracking Powder reduced the number of active burrows. ZP® Rodent Bait had no observed effect on the rodent population and no rodents were taken with snap traps. Burrow activity appears to be a better census method when compared to corn consumption when rodents have access to unlimited food.
Dealing With The Policy Makers, Herb Manig
Dealing With The Policy Makers, Herb Manig
Great Plains Wildlife Damage Control Workshop Proceedings
First, “Why would policy makers be interested in wildlife damage control in the first place?” In response, I would have to say that the problems with wildlife are increasing in number, diversity and complexity. Policy makers cannot afford to ignore controversies caused by them. We have problems in transportation with deer/automobiles collisions. We have airplane engines ingesting birds. We have health problems with respect to disease. Wildlife damage costs money. We also have problems with aesthetics. Some of the homeowners may not lose a lot of money when deer nibble their shrubs but they certainly don't like the looks of …
Use Of Netted-Cage Traps In Population Management And Research Of Urban White-Tailed Deer, Kurt C. Vercauteren, Jeff Beringer, Scott Hygnstrom
Use Of Netted-Cage Traps In Population Management And Research Of Urban White-Tailed Deer, Kurt C. Vercauteren, Jeff Beringer, Scott Hygnstrom
Great Plains Wildlife Damage Control Workshop Proceedings
Growing populations of white-tailed deer (Odocoileus virginianus) in urban areas often conflict with local human interests and present challenges to natural resource managers. Netted-cage traps can be an important tool for management of urban deer populations where traditional control methods may not be appropriate or acceptable. We discuss the design of netted-cage traps, trapping techniques, and the handling of trapped deer.
Mylar Flags As Gull Deterrents, Jerrold L. Belant, Sheri K. Ickes
Mylar Flags As Gull Deterrents, Jerrold L. Belant, Sheri K. Ickes
Great Plains Wildlife Damage Control Workshop Proceedings
During 1996, we evaluated the effectiveness of mylar flags for deterring herring gulls (Larus argentatus) from 2 nesting colonies (roof and breakwall) and herring and ring-billed (L. deglawarensis) gulls from 2 loafing sites at a landfill. Mylar flags (15 cm x 1.0 m) attached to wire or lathe supports were positioned at 6-m intervals at nesting colonies and 3- to 12-m intervals at loafing areas. For both nesting colonies, time of nest initiation, nest density, and clutch size in 1996 when flags were present was similar to or greater than values obtained for these parameters at …
The Coyote As An Ecological Model, Thomas A. Eddy, Cindy M. Moore
The Coyote As An Ecological Model, Thomas A. Eddy, Cindy M. Moore
Great Plains Wildlife Damage Control Workshop Proceedings
Teachers (K-12) in a prairie ecology workshop in Kansas used the coyote as the focus for the design of an educational strategy to integrate many concepts and principles of ecology into the various subject areas of the curriculum. A topical outline was developed as a guide for implementing the study.
Technical Publication Of Wildlife Damage Research, Michael W. Fall, William B. Jackson
Technical Publication Of Wildlife Damage Research, Michael W. Fall, William B. Jackson
Great Plains Wildlife Damage Control Workshop Proceedings
The growth of the subdiscipline of wildlife damage research is producing a wealth of scientific information about methods of resolving conflicts between animals and people. Scientists working on these problems have, for many years, found difficulty in publishing the results of their applied research investigations in traditional scientific journal outlets, leading to a diverse information base that encompasses a variety of technical journals and a large “gray” literature in non-refereed publications. Although a number of current scientific journals welcome papers reporting the results of wildlife damage research, the identification of suitable primary outlets for such work, particularly for studies conducted …
Gifford Point/Fontenelle Forest Urban Deer Survival And Case Study, Jason D. Ekstein, Scott E. Hygnstrom
Gifford Point/Fontenelle Forest Urban Deer Survival And Case Study, Jason D. Ekstein, Scott E. Hygnstrom
Great Plains Wildlife Damage Control Workshop Proceedings
From 1995-1996, we radio collared and/or ear tagged 98 white-tailed deer (Odocoileus virginianus) in an urban area of Bellevue, Nebraska. We determined the density to be 44 deer/km2 and observed the movements of 52 collared does. The managed hunt and harvest results are discussed.
Water Current, Volume 29, No. 1, February 1997
Water Current, Volume 29, No. 1, February 1997
Water Current Newsletter
Innovative Groundwater Cleanup Technique Being Featured in EPA's Technology Profiles
From the Director: Funding Sources Explored; Award Recognizes Stewardship
Prevention Helps Safeguard Drinking Water
Health and Human Services Department Certifies Nebraska Water Operators
"Splash" Is Interactive Intro to Nonpoint Source Pollution Through CD-ROM Game
Water Brief News
Register for Groundwater University
Expedition Planned for Children's Groundwater Festival
Comfort, Morrison Earn Research Awards
Volk Presented Water Guardian Award
Conference Deadline March 4
Unit Library A Little Known Resource
Nebline, February 1997
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Living on a few acres in Lancaster County
Acreage development accelerates
Over the garden fence
Squirrel damage to trees
Thornless honeylocust
What do birds like to eat?
1997 All America Selection winners
Seedless grapes in Nebraska
New 4-H horticulture garden program
Swarm of ants in the winter? Hard to believe, but true!
Woodpeckers come knocking
Plants have many roles
Wheat fields needed for summer application of biosolids
Benes farm joins effort to protect Wildwood Lake Watershed
Free lead poisoning prevention program identifies children at risk
Satellite conference on CRP
Chemigation training scheduled
1997 grain sorghum seminars
Grain yield monitors
UNL …
Ard News February 1997
Agricultural Research Division: News and Annual Reports
CONTENTS:
COMMENTS FROM THE DEAN
UNL RESEARCH GRANTS AND CONTRACTS FY 1996
STEVE WALLER'S FIVE YEAR ADMINISTRATIVE REVIEW
ARMY ALLOCATES FUNDING FOR CLEAN-UP PROJECTS AT ARDC
PROPOSALS SUBMITTED FOR FEDERAL GRANTS
CROP DIAGNOSTIC CLINIC ATTRIBUTES SUCCESS TO MANY
NEW OR REVISED PROJECTS
GRANTS AND CONTRACTS RECEIVED DECEMBER 1996 AND JANUARY 1997
COPYRIGHT AND FAIR USE WORKSHOP
FOOD AND FIBER SECTOR CONTRIBUTION TO THE U.S. ECONOMY
EMPLOYMENT ON FARMS AND FARM-RELATED INDUSTRIES, 1990
TOTAL CASH RECEIPTS FROM FARMING -1990
Book Review: An Inordinate Fondness For Beetles (Evans, A.V. And C.L. Bellamy), Brett C. Ratcliffe
Book Review: An Inordinate Fondness For Beetles (Evans, A.V. And C.L. Bellamy), Brett C. Ratcliffe
University of Nebraska State Museum: Entomology Papers
This nicely produced book is a visual celebration of beetles. Consider that it has 140 color photographs on 98 color plates . . . and 26 of those plates are of scarabs. Excellent! One should not construe my possible bias (or perhaps even that of the first author) as too narrow in its focus because the breadth of coverage of this volume is truly beetlewide.
In the Prologue, the authors briefly review the timeless fascination that humans have had with beetles. They note that most people are not aware of the diversity of beetles and are not impressed by such …
Canadian Cooperative Wildlife Health Center Newsletter, Volume 5-1, Winter 1997
Canadian Cooperative Wildlife Health Center Newsletter, Volume 5-1, Winter 1997
Canadian Cooperative Wildlife Health Centre: Newsletters and Publications
New Voice in CCWHC - Ontario Region Volunteers in Saskatoon Botulism on the Prairies: Another Bad Year, With New Wrinkles Necropsy of a Right Whale on Long Island, Nova Scotia Morbillivirus Infection in Four Lynx Ethylene Glycol Intoxication in a Raccoon Risk of Morbillivirus to Belugas Bullfrog Mortality in a Man-Made Pond Snow Goose Mortality - Fort Severn, Ontario Thick-billed Murres Barbiturate Poisoning of Bald Eagles Diseases in Endangered Marmots Fish Deaths Caused by Parasites Outbreak of Viral Disease in Tiger Salamanders
Monte Carlo Simulation Of The Solid To Superliquid Phase Transition Of Langmuir Monolayers. Ii. Characteristics Of Phase Transition, M.D. Gibson, D.R. Swanson, Craig J. Eckhardt, Xiao Cheng Zeng
Monte Carlo Simulation Of The Solid To Superliquid Phase Transition Of Langmuir Monolayers. Ii. Characteristics Of Phase Transition, M.D. Gibson, D.R. Swanson, Craig J. Eckhardt, Xiao Cheng Zeng
Craig J. Eckhardt Publications
The restricted-to-free rotator phase transition of fatty acid monolayers has been modeled using a potential which represents the amphiphiles as planar cross sections of fourfold symmetry. Using much larger system sizes than paper I [D. R. Swanson, R. J. Hardy, and C. J. Eckhardt, J. Chem. Phys. 99, 8194 (1993)], Monte Carlo simulations of the isobaric–isothermal ensemble of model systems with varied number of objects were undertaken to study the effect of system size on the characteristics and order of the phase transition. A peak in the specific heat vs temperature curve was observed near the transition. For each system …
Listeria Monocytogenes Scott A Transports Glucose By High-Affinity And Low-Affinity Glucose Transport Systems, Corinne Parker, Robert W. Hutkins
Listeria Monocytogenes Scott A Transports Glucose By High-Affinity And Low-Affinity Glucose Transport Systems, Corinne Parker, Robert W. Hutkins
Department of Food Science and Technology: Faculty Publications
Listeria monocytogenes transported glucose by a high-affinity phosphoenolpyruvate-dependent phosphotransferase system and a low-affinity proton motive force-mediated system. The low-affinity system (Km = 2.9 mM) was inhibited by 2-deoxyglucose and 6-deoxyglucose, whereas the high-affinity system (Km= 0.11 mM) was inhibited by 2-deoxyglucose and mannose but not 6-deoxyglucose. Cells and vesicles artificially energized with valinomycin transported glucose or 2-deoxyglucose at rates greater than those of de-energized cells, indicating that a membrane potential could drive uptake by the low-affinity system.
Genetic Variability Among Maize Inbred Lines For Resistance To The High Plains Virus–Wheat Streak Mosaic Virus Complex, A. Marçon, S. M. Kaeppler, S. G. Jensen
Genetic Variability Among Maize Inbred Lines For Resistance To The High Plains Virus–Wheat Streak Mosaic Virus Complex, A. Marçon, S. M. Kaeppler, S. G. Jensen
Department of Plant Pathology: Faculty Publications
High plains virus (HPV) is a pathogen that causes a severe disease, especially in susceptible corn genotypes. The virus is transmitted by the eriophyid mite Aceria tosichella, which also transmits wheat streak mosaic virus (WSMV). This often results in a mixed infection by these two viruses. Genetic variability for resistance to the HPV exists among maize inbred lines but has not been characterized. The disease reaction of 30 maize inbred lines to the mixed infection and to WSMV alone was characterized in this study. Evaluation was based on symptom expression and virus titer (HPV and WSMV), as measured by …
Encapsidation Of Turnip Crinkle Virus Is Defined By A Specific Packaging Signal And Rna Size, Feng Qu, Thomas Jack Morris
Encapsidation Of Turnip Crinkle Virus Is Defined By A Specific Packaging Signal And Rna Size, Feng Qu, Thomas Jack Morris
Nebraska Center for Virology: Faculty Publications
A protoplast infection assay has been used to reliably examine the viral RNA encapsidation of turnip crinkle virus (TCV). Analysis of the encapsidation of various mutant viral RNAs revealed that a 186-nucleotide (nt) region at the 3’ end of the coat protein (CP) gene, with a bulged hairpin loop of 28 nt as its most essential element, was indispensable for TCV RNA encapsidation. When RNA fragments containing the 186-nt region were used to replace the CP gene of a different virus, tomato bushy stunt virus, the resulting chimeric viral RNAs were encapsidated into TCV virions. Furthermore, analysis of the encapsidated …
Phylogenetic Analysis Of Nematodes Of The Genus Pratylenchus Using Nuclear 26s Rdna, Luma Al-Banna, Valerie M. Williamson, Scott Lyell Gardner
Phylogenetic Analysis Of Nematodes Of The Genus Pratylenchus Using Nuclear 26s Rdna, Luma Al-Banna, Valerie M. Williamson, Scott Lyell Gardner
Harold W. Manter Laboratory of Parasitology: Faculty Publications
We used nucleotide sequences of the large subunit ribosomal genes (26S rDNA) to examine evolutionary relationships among species of the genus Pratylenchus (Order: Tylenchida, Family: Pratylenchidae), commonly known as root-lesion nematodes. Ten species of Pratylenchus were studied including, P. penetrans, P. crenatus, P. minyus, P. vulnus, P. thornei, P. musicale, P. coffeae, P. bexincisus, P. scribneri, and P. brachyurus. The species Hirschmanniella belli, Meloidogyne javanica, Heterorhabditis bacteriophora, Nacobbus eberruns, Radopholus similis, and Xiphinema index were used as outgroups. Based on parsimony analyses of approximately 307 …
Myxobolus Mississippiensis N. Sp. (Myxosporea) From Gills Of Lepomis Macrochirus In Mississippi, David K. Cone, Robin M. Overstreet
Myxobolus Mississippiensis N. Sp. (Myxosporea) From Gills Of Lepomis Macrochirus In Mississippi, David K. Cone, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Myxobolus mississippiensis n. sp. is described from gill lamellae of the bluegill (Lepomis macrochirus) inhabiting the Pascagoula River System, Mississippi. Fresh spores measure 16.4-18.7 μm long, 3.9-6.2 μm wide, and 4.7-6.2 μm thick. Spore width to length ratio is 1:3.2. Polar capsules are 5.5-7.8 μm long and 1.5-2.3 μm wide, with 9-10 filament coils that when extruded measure 42.1 ± 4.2 μm. This parasite is unique among known species of Myxobolus,/i> in having spores that are lenticular in frontal view.
Cucullanus Palmeri N. Sp. (Nematoda: Cucullanidae) From The Batfish Ogcocephalus Nasutus In The Gulf Of Mexico, John L. Crites, Robin M. Overstreet
Cucullanus Palmeri N. Sp. (Nematoda: Cucullanidae) From The Batfish Ogcocephalus Nasutus In The Gulf Of Mexico, John L. Crites, Robin M. Overstreet
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Cucullanus palmeri n. sp. is described from the shortnose batfish, Ogcocephalus nasutus, in the Gulf of Mexico. This species is anatomically most similar to Cucullanus gendrei but differs from it in having a shorter esophagus and longer tail. Males differ in having a smaller gubernaculum and a different arrangement of a lateral caudal papilla. Cucullanus palmeri is readily distinguished from Cucullanus lophii, also from a lophiform fish host, in that the deirids and excretory pore are not posterior to the posterior end of the esophagus like in C. lophii.
A Eubacterial Gene Conferring Spectinomycin Resistance On Chlamydomonas Reinhardtii: Integration Into The Nuclear Genome And Gene Expression, Heriberto D. Cerutti, A. M. Johnson, N. W. Gillham, J. E. Boynton
A Eubacterial Gene Conferring Spectinomycin Resistance On Chlamydomonas Reinhardtii: Integration Into The Nuclear Genome And Gene Expression, Heriberto D. Cerutti, A. M. Johnson, N. W. Gillham, J. E. Boynton
Center for Plant Science Innovation: Faculty Publications
We have constructed a dominant selectable marker for nuclear transformation of C. reinhardtii, composed of the coding sequence of the eubacterial aadA gene (conferring spectinomycin resistance) fused to the 5' and 3' untranslated regions of the endogenous RbcS2 gene. Spectinomycin-resistant transformants isolated by direct selection (1) contain the chimeric gene(s) stably integrated into the nuclear genome, (2) show cosegregation of the resistance phenotype with the introduced DNA, and (3) synthesize the expected mRNA and protein. Small linearized plasmids appeared to be inserted into the nuclear genome preferentially through their ends, with relatively few large deletions and/or rearrangements. Multiple copy transformants …
Rodent Exclusion Techniques: A Training Guide For National Park Service Employees, Gerard Hoddenbach, Jerry Johnson, Carol Disalvo
Rodent Exclusion Techniques: A Training Guide For National Park Service Employees, Gerard Hoddenbach, Jerry Johnson, Carol Disalvo
Other Publications in Wildlife Management
Rodents have been a common problem in living and working environments, probably, ever since humans began living in permanent dwellings. Even today many people believe rodent infestations are "inevitable". However, the recent appearance of Hantavirus (Sin Nombre Virus, Hantavirus Pulmonary Syndrome, HPS) in the Western states has re-awakened the public to the serious health problems posed by rodents and has prompted new inquiries into more effective ways to manage infestations. This manual is designed as a training reference for making rodent control in buildings an attainable goal.
Construction And Characterization Of A Large Insert Porcine Yac Library, L.J. Alexander, T. P.L. Smith, C. W. Beattie, M. F. Broom
Construction And Characterization Of A Large Insert Porcine Yac Library, L.J. Alexander, T. P.L. Smith, C. W. Beattie, M. F. Broom
Roman L. Hruska U.S. Meat Animal Research Center: Reports
The recent construction of genetic linkage maps of the porcine genome (Rohrer et al. 1994, 1996; Ellegren et al. 1994; Archibald et al. 1995) allows the assignment of loci affecting heritable traits of economic importance (ETLs; Lander and Botstein 1989) to specific chromosomal segments. Markers can thus be identified that may be useful in marker-assisted selection (MAS) to increase the frequency of favorable allele(s) in resource populations (reviewed in Soller 1994). In addition, mapping of these loci creates the opportunity to identify gene(s) influencing a trait, through positional cloning or positional cnadidate gene approaches (Grootscholten et al. 1991). A positional …
Internal Anatomy Of The Snout And Paranasal Sinuses Of Hyaenodon (Mammalia, Creodonta), R. M. Joeckel, H.W. Bond, G.W. Kabalka
Internal Anatomy Of The Snout And Paranasal Sinuses Of Hyaenodon (Mammalia, Creodonta), R. M. Joeckel, H.W. Bond, G.W. Kabalka
School of Natural Resources: Faculty Publications
No abstract provided.
The Impact Of Using Area-Averaged Land Surface Properties -Topography, Vegetation Condition, Soil Wetness-In Calculations Of Intermediate Scale (Approximately 10 Km2) Surface-Atmosphere Heat And Moisture Fluxes, Piers Sellers, Mark Heiser, Forrest Hall, Shashi Verma, Raymond Desjardins, Peter Schuepp, Ian Macpherson
The Impact Of Using Area-Averaged Land Surface Properties -Topography, Vegetation Condition, Soil Wetness-In Calculations Of Intermediate Scale (Approximately 10 Km2) Surface-Atmosphere Heat And Moisture Fluxes, Piers Sellers, Mark Heiser, Forrest Hall, Shashi Verma, Raymond Desjardins, Peter Schuepp, Ian Macpherson
School of Natural Resources: Faculty Publications
It is commonly assumed that biophysically based soil-vegetation-atmosphere transfer (SVAT) models are scale-invariant with respect to the initial boundary conditions of topography, vegetation condition and soil moisture. In practice, SV AT models that have been developed and tested at the local scale (a few meters or a few tens of meters) are applied almost unmodified within general circulation models (GCMs) of the atmosphere, which have grid areas of 50-500 kIn2• This study, which draws much of its substantive material from the papers of Sellers et al. (l992c, J. Geophys. Res., 97(Dl7): 19033-19060) and Sellers et al. (1995, J. Geophys. Res., …
Ecological Water Treatment System For Removal Of Phosphorus And Nitrogen From Polluted Water, Ray W. Drenner, Donald J. Day, Stacy J. Basham, J. Durward Smith, Susan I. Jensen
Ecological Water Treatment System For Removal Of Phosphorus And Nitrogen From Polluted Water, Ray W. Drenner, Donald J. Day, Stacy J. Basham, J. Durward Smith, Susan I. Jensen
School of Natural Resources: Faculty Publications
We propose that phosphorus and nitrogen can be removed from polluted water using an ecological water treatment system consisting of periphyton and fish. In the proposed system, polluted water flows through a series of vessels, and the nutrients are taken up by periphyton growing on porous screens. Algal-grazing fish feed on the periphyton and either assimilate or egest the nutrients in mucus-bound feces that settle from the water into a sediment trap. Both the fish and their feces can be harvested as nutrient sinks. In this study we examined the effects of an algal-grazing cichlid (Tilapia mossambica) and …