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Articles 1 - 23 of 23
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Revitalizing Environmental Federalism, Daniel C. Esty
Revitalizing Environmental Federalism, Daniel C. Esty
Michigan Law Review
Politicians from Speaker Newt Gingrich to President Bill Clinton, cheered on by academics such as Richard Revesz, are eagerly seeking to return authority over environmental regulation to the states. In the European Union, localist opponents of environmental decisionmaking in Brussels rally under the banner of "subsidiarity." And in debates over international trade liberalization, demands abound for the protection of "national sovereignty" in environmental regulation. All of these efforts presume that a decentralized approach to environmental policy will yield better results than more centralized programs. This presumption is misguided. While the character of some environmental concerns warrants a preference for local …
Helminths Of The Southwestern Toad, Bufo Microscaphus, Woodhouse's Toad, Bufo Woodhousii (Bufonidae), And Their Hybrids From Central Arizona, Stephen R. Goldberg, Charles R. Bursey, Keith B. Malmos, Brian K. Sullivan, Hay Cheam
Helminths Of The Southwestern Toad, Bufo Microscaphus, Woodhouse's Toad, Bufo Woodhousii (Bufonidae), And Their Hybrids From Central Arizona, Stephen R. Goldberg, Charles R. Bursey, Keith B. Malmos, Brian K. Sullivan, Hay Cheam
Great Basin Naturalist
The gastrointestinal tracts, lungs, and urinary bladders from 77 Bufo microscaphus, 61 Bufo woodhousii, and 8 of their hybrids were examined for helminths. One species of trematode (Glypthelmins quieta), 1 species of cestode (Distoichometra bufonis), and 5 species of nematodes (Aplectana incerta, A. itzocanensis, Rhabdias americanus, Physaloptera sp., and Physocephalus sp.) were found. The greatest prevalence (41%) and mean intensity (231.7) were recorded for Aplectana incerta in Bufo woodhousii. It appears hybrids harbor fewer parasites than either parent species.
The Mayfly Newsletter, Peter M. Grant
The Mayfly Newsletter, Peter M. Grant
The Mayfly Newsletter
The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.
Geographical Review Of The Historical And Current Status Of Ospreys (Pandion Haliaetus) In Utah, Clark S. Monson
Geographical Review Of The Historical And Current Status Of Ospreys (Pandion Haliaetus) In Utah, Clark S. Monson
Great Basin Naturalist
Small numbers of Ospreys (Pandion haliaetus) are known to have nested historically in Utah. A precise baseline figure is unavailable, but the 19th-century Osprey population in Utah probably consisted of at least 15 breeding pairs scattered in 4 geographic regions. Human persecution is believed to have caused the abandonment of nesting territories along the Wasatch Front and in the western Uinta Mountains by 1900 and 1960, respectively. Osprey populations in the southern plateaus and Green River areas, however, began increasing in the late 1970s. Several recent nesting attempts and numerous summer sightings at nontraditional and abandoned historical sites …
Pogonomyrmex Owyheei Nest Site Density And Size On A Minimally Impacted Site In Central Oregon, Peter T. Soulé, Paul A. Knapp
Pogonomyrmex Owyheei Nest Site Density And Size On A Minimally Impacted Site In Central Oregon, Peter T. Soulé, Paul A. Knapp
Great Basin Naturalist
Little is known about the basic characteristics of the western harvester ant (Pogonomyrmex owyheei) in the absence of anthropogenic disturbances. We examined the role of P. owyheei as an agent of disturbance in an area of semiarid vegetation in central Oregon known as the Horse Ridge Research Natural Area (HRRNA) that has been largely free of livestock grazing and other significant anthropogenic influences for over 23 yr. We determined density and size characteristics of nest sites and estimate total area cleared by P. owyheei activities on HRRNA. From random sampling of twenty-five 0.04-ha plots we found a mean …
Summer Nocturnal Roost Sites Of Blue Grouse In Northeastern Oregon, Kenneth J. Popper, Eric C. Pelren, John A. Crawford
Summer Nocturnal Roost Sites Of Blue Grouse In Northeastern Oregon, Kenneth J. Popper, Eric C. Pelren, John A. Crawford
Great Basin Naturalist
No abstract provided.
The Law Of Sustainable Development, Nicholas A. Robinson
The Law Of Sustainable Development, Nicholas A. Robinson
Pace Environmental Law Review
No abstract provided.
Temporal And Spatial Distribution Of Highway Mortality Of Mule Deer On Newly Constructed Roads At Jordanelle Reservoir, Utah, Laura A. Romin, John A. Bissonette
Temporal And Spatial Distribution Of Highway Mortality Of Mule Deer On Newly Constructed Roads At Jordanelle Reservoir, Utah, Laura A. Romin, John A. Bissonette
Great Basin Naturalist
In this paper we evaluated traffic characteristics and vegetation and topographic features associated with mule deer kills on 3 highways (US 40, SR 32, SR 248) in northeastern Utah. We also compared number, and sex and age composition of roadkills to that of the living population observed during spotlight counts. From 15 October 1991 to 14 October 1993 we documented 397 deer roadkills: 51.6% were does, 18.9% bucks, 21.7% fawns, and 7.8% could not be classified. Sixty-seven percent of adult kills were ≤2.5 yr of age. Kill composition compared closely to spotlight counts. Of 1515 spotlight deer, 65.2% were does, …
Trachytes Kaliszewskii, N. Sp. (Acari: Uropodina), From The Great Basin (Utah, Usa), With Remarks On The Habitats And Distribution Of The Members Of The Genus Trachytes, Jerzy Błoszyk, Paweł Szymkowiak
Trachytes Kaliszewskii, N. Sp. (Acari: Uropodina), From The Great Basin (Utah, Usa), With Remarks On The Habitats And Distribution Of The Members Of The Genus Trachytes, Jerzy Błoszyk, Paweł Szymkowiak
Great Basin Naturalist
Trachytes kaliszewskii, n. sp., is described from the Great Basin, Utah, USA. SEM photography illustrates morphological detail. An annotated list is included of currently recognized species of the genus Trachytes, with comments on their distribution and habitat characteristics.
Partial Life History Of Southern Hogchokers, Trinectes Maculatus Fasciatus, In The Back Bay Of Biloxi, Mississippi, Tanya L. Peterson-Curtis
Partial Life History Of Southern Hogchokers, Trinectes Maculatus Fasciatus, In The Back Bay Of Biloxi, Mississippi, Tanya L. Peterson-Curtis
Gulf of Mexico Science
To address life history variation between hogchoker subspecies, length-weight relationships, length conversion factors, back-calculated lengths at age, and female age at maturity were determined for a southern hogchoker population in the northern Gulf of Mexico. Length-weight relationships of female and male hogchokers differed (P < 0.05) only when the regression was based on total lengths. The standard length (SL)-weight equation was W = 0.000022·L3.136. Individuals of the southern population are more robust than those of the northern form, yet have similar SL-TL conversion factors. Otolith annuli were validated, with annuli forming between June and July. The age structure ranged from 1 to 5 yr, with the average SL at age 1 being 21.14 mm. Growth rates appear relatively …
Foods Of Juvenile Spotted Seatrout In Seagrasses At Seahorse Key, Florida, William T. Mason Jr., Scott A. Zengel
Foods Of Juvenile Spotted Seatrout In Seagrasses At Seahorse Key, Florida, William T. Mason Jr., Scott A. Zengel
Gulf of Mexico Science
Early juvenile [ <1 yr; 10-100 mm total length (TL)] spotted seatrout in the shallow seagrasses at Seahorse Key, Florida, in the Northeast Gulf of Mexico, fed on 12 kinds of foods. Although the total diversity of major food items of juvenile seatrout is about the same as 50 years ago, for some unexplained reasons, the juvenile diets have apparently switched to other invertebrate species and to small fish. The 10-30 mm TL seatrout ate small Crustacea, e.g., amphipods and grass shrimps, and fed mostly in the Halodule seagrass zone (average depth 0.5 m). In addition to these species, the 50-80 mm TL seatrout, feeding primarily in the Halodule and Thalassia (average depth 0.8 m) zones, consumed copepods, a combination of decapod shrimps (Mysidopsis bahia, Palaemonetes pugio, P. vulgaris, Periclimenes longicaudatus, Penaeus duorarum), and small fish. Seatrout of 80-100 mm TL appeared to feed only in Thalassia, and larger juveniles (not collected) probably fed in the mixed-grass zone beyond our study area (>1 m depth). Seatrout food resources at the Keys were robust. Peak densities and diversities of hyperbenthic invertebrates in the seagrasses were inversely proportional (maximum average number of individuals = 12,000/sled trawl, Sep.; maximum average number of taxa = 35 spp., March).
Atlantic Spotted Dolphins (Stenella Frontalis) In The Gulf Of Mexico, Lisa R. Mills, Kevin R. Rademacher
Atlantic Spotted Dolphins (Stenella Frontalis) In The Gulf Of Mexico, Lisa R. Mills, Kevin R. Rademacher
Gulf of Mexico Science
No abstract provided.
Notes On The Occurrence Of Guavina Guavina (Pisces: Eleotridae) In East Central Florida: First North American Continental Record, D. Scott Taylor
Notes On The Occurrence Of Guavina Guavina (Pisces: Eleotridae) In East Central Florida: First North American Continental Record, D. Scott Taylor
Gulf of Mexico Science
No abstract provided.
"Historical Processes And The Political Organization Of The Hasinai Caddo Indians": A Reply, Nancy Adele, Timothy K. Perttula
"Historical Processes And The Political Organization Of The Hasinai Caddo Indians": A Reply, Nancy Adele, Timothy K. Perttula
Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State
In a recent volume of the Caddoan Archeology Newsletter, Daniel Hickerson argues that Apache aggression across the Southern Plains, Apache trade in horses and other European goods, and European-introduced diseases dramatically affected Caddo an populations by encouraging their migration south to the upper Neches/Angelina river basins area traditionally occupied by one segment of the Caddo, the Hasinai groups. In his opinion, the Hasinai confederacy was a nascent chiefdom that developed as a direct result of this mid to late-seventeenth century southern migration. As has been pointed out by Caddoan ethnographers, ethnohistorians, and archeologists for 50 years or more, the Caddo …
Minnesota-North Dakota Academies Of Science, 1994, Roland Dille
Minnesota-North Dakota Academies Of Science, 1994, Roland Dille
Journal of the Minnesota Academy of Science
No abstract provided.
Food Of Cobia, Rachycentron Canadum, From The Northcentral Gulf Of Mexico, Gabriele H. Meyer, James S. Franks
Food Of Cobia, Rachycentron Canadum, From The Northcentral Gulf Of Mexico, Gabriele H. Meyer, James S. Franks
Gulf and Caribbean Research
The stomach contents of 403 cobia, Rachycentron canadum, caught in the northcentral Gulf of Mexico recreational fishery from April through October of 1987-1990 were examined. Cobia ranged from 373-1,530 mm in fork length. Of the 403 stomachs, 287 (71.2%) contained at least one identifiable prey taxon. Crustaceans, consisting primarily of portunid crabs, were the predominant food. Crustaceans occurred in 79.1% of the stomachs and comprised 77.6% of the total number of identifiable prey. The second most important prey category was fish which was dominated by hardhead catfish, Arius felis, and eels. Fish occurred in 58.5% of the stomachs …
Reproductive Strategies In A Population Of Gobiosoma Bosci (Osteichthyes: Gobiidae) With Slow And Fast Maturing Individuals, Candace H. Conn, David L. Bechler
Reproductive Strategies In A Population Of Gobiosoma Bosci (Osteichthyes: Gobiidae) With Slow And Fast Maturing Individuals, Candace H. Conn, David L. Bechler
Gulf and Caribbean Research
The reproductive biology of Gobiosoma bosci collected from November 1986 to October 1987 in the McFaddin Wildlife Refuge in southeast Texas was studied by using morphometric data. Males achieved greater weights per unit length than females, and longevity was about 12 to 13 months. GSI values and mean monthly ovum diameters indicated that the breeding season ran from April to September, with a major activity peak in May and a minor peak in September. Significant differences in male and female standard lengths (SL), ovum diameter, and egg number existed for sexually mature specimens between the first and second peaks of …
Biofilm Mediated Calculus Formation In The Urinary Tract, Robert J. C. Mclean, David J. Stickler, J. Curtis Nickel
Biofilm Mediated Calculus Formation In The Urinary Tract, Robert J. C. Mclean, David J. Stickler, J. Curtis Nickel
Cells and Materials
Mineralization and subsequent calculus formation is a common complication of biofilm infections. In the urinary tract, these infected calculi often arise from infections by urease-producing bacteria. Ammonia, liberated by bacterial urease activity, increases urine pH, resulting in the precipitation of Ca and Mg as carbonateapatite {Ca10(PO4,CO3)6(OH,CO3)2} and struvite (NH4MgP04·6H2O). These minerals become entrapped in the organic matrix which surrounds the infecting organisms and ultimately grow into mature calculi. When the causative organisms grow on urinary catheters and stents, the resulting mineralization can …
A Recent Colonization Of Dolichopoda Cave Crickets In The Poscola Cave (Orthoptera, Rhaphidophoridae), Camilla Bernardini, Claudio Di Russo, Mauro Rampini, Donatella Cersaroni, Valerio Sbordoni
A Recent Colonization Of Dolichopoda Cave Crickets In The Poscola Cave (Orthoptera, Rhaphidophoridae), Camilla Bernardini, Claudio Di Russo, Mauro Rampini, Donatella Cersaroni, Valerio Sbordoni
International Journal of Speleology
We report a series of investigations carried out on a Dolichopoda population recently discovered in the Poscola cave and in some small caves nearby (Lessini Mountains, Vicenza). This population is located north of Po river, outside the present known geographic range of this genus in Italy. Morphology of the epiphallus corroborated by chromosome and allozyme analysis indicated that this population belongs to D. laetitiae. Study of the genetic structure of population in the Poscola area revealed high gene flow levels between Poscola and the other minor caves, suggesting the occurrence of a single expanding population. This finding as well …
Ultrastructure Of Cepedietta Virginiensis (Protista: Haptophrynidae), From The Gall Bladder Of The Pickerel Frog, Rana Palustris, In Arkansas, Chris T. Mcallister, Stanley E. Trauth
Ultrastructure Of Cepedietta Virginiensis (Protista: Haptophrynidae), From The Gall Bladder Of The Pickerel Frog, Rana Palustris, In Arkansas, Chris T. Mcallister, Stanley E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
One-Year Study Of The Species Diversity And Relative Abundance Of Snakes And Lizards In The Jack Mountain Region Of Hot Springs County, Arkansas, Vincent A. Cobb, Jeff A. Summerhill
One-Year Study Of The Species Diversity And Relative Abundance Of Snakes And Lizards In The Jack Mountain Region Of Hot Springs County, Arkansas, Vincent A. Cobb, Jeff A. Summerhill
Journal of the Arkansas Academy of Science
No abstract provided.
Uab Magazine - Fall 1996, University Of Alabama At Birmingham
Uab Magazine - Fall 1996, University Of Alabama At Birmingham
UAB Magazine
No abstract provided.