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Terrestrial and Aquatic Ecology Commons™
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Articles 5461 - 5490 of 6306
Full-Text Articles in Terrestrial and Aquatic Ecology
An Overview Of The Endangered Species Act, Michael J. Brennan
An Overview Of The Endangered Species Act, Michael J. Brennan
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
25 pages.
Landscape Scale Habitat Conservation Plans: The California Experience, Lindell L. Marsh
Landscape Scale Habitat Conservation Plans: The California Experience, Lindell L. Marsh
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
24 pages.
Contains 3 pages of references.
The Ethical Aspects Of Biodiversity Protection: Duties To Human Beings And Duties To Other Species, Dale Jamieson
The Ethical Aspects Of Biodiversity Protection: Duties To Human Beings And Duties To Other Species, Dale Jamieson
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
11 pages.
Contains 2 pages of references.
The Endangered Species Act: Crystallizing Ecosystem Management, George T. Frampton Jr.
The Endangered Species Act: Crystallizing Ecosystem Management, George T. Frampton Jr.
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
15 pages.
Waiting To Exhale Under The Esa: The Evolution Of Hcps And Section 4(D) Rules, Donald J. Barry
Waiting To Exhale Under The Esa: The Evolution Of Hcps And Section 4(D) Rules, Donald J. Barry
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
16 pages.
The Sonoran Desert Tortoise And The Mexican Spotted Owl: The High Road And The Slow Road To Conservation, Duane L. Shroufe
The Sonoran Desert Tortoise And The Mexican Spotted Owl: The High Road And The Slow Road To Conservation, Duane L. Shroufe
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
13 pages.
Agenda: Biodiversity Protection: Implementation And Reform Of The Endangered Species Act, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Biodiversity Protection: Implementation And Reform Of The Endangered Species Act, University Of Colorado Boulder. Natural Resources Law Center
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
Conference organizers and/or faculty included University of Colorado School of Law professors Betsy Rieke, David H. Getches, Michael A. Gheleta and Charles F. Wilkinson.
All across the country--in Congress, in state legislatures and in urban and rural communities--people are discussing why we should or should not protect biodiversity and how best to do so. Since the Endangered Species Act is up for reauthorization, a variety of reform proposals are being debated. Speakers--including natural resource scholars, experts from the private and nonprofit sectors, and government officials--will examine the rationale for biodiversity protection, the legal framework of the Endangered Species Act, and …
The Scientific Underpinnings Of Biodiversity Protection, Jane Lubchenko
The Scientific Underpinnings Of Biodiversity Protection, Jane Lubchenko
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
5 pages.
Assessment Of Kokanee Salmon, Oncorhynchus Nerka, Genetic Stocks In Flaming Gorge Reservoir, Utah-Wyoming, Michael F. Canning
Assessment Of Kokanee Salmon, Oncorhynchus Nerka, Genetic Stocks In Flaming Gorge Reservoir, Utah-Wyoming, Michael F. Canning
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
I investigated the relative abundance, spatial distributions, return to the creel, and growth rates of two genetic stocks of kokanee salmon, Oncorhynchus nerka, in Flaming Gorge Reservoir, Utah-Wyoming. The two genetic stocks consist of fish from the two major spawning populations of kokanee in the reservoir. One population, Shore Spawners, spawns along the eastern shoreline of the Open Hills area of the reservoir. The other population, Sheep Creek, spawns in Sheep Creek, a tributary located in the Canyon area of the reservoir.
Mitochondrial DNA of kokanee from each population was analyzed to determine haplotype differences between stocks. These haplotype …
Report Of Significant Findings--Las Vegas Bay/Boulder Basin Investigations, James F. Labounty, Michael Horn, Bureau Of Reclamation
Report Of Significant Findings--Las Vegas Bay/Boulder Basin Investigations, James F. Labounty, Michael Horn, Bureau Of Reclamation
Publications (WR)
Field sampling was carried out between 0830 and 1500 beginning at the confluence of Las Vegas Wash and the Inner Las Vegas Bay. Ten (10) locations were sampled, each in a similar manner. Locations of sampling stations are in line from the Wash-Bay confluence to a point midway between Saddle and Black Islands. In addition, sampling was done at a location midway between Sentinel Island and the base of Fortification Hill, and at the buoy line in front of Hoover Dam. Sampling stations are labeled from LV01, at Wash-Bay confluence, to LV17 at Hoover Dam. A significant data collection point …
Comparison Of Sapling Community Structure In Created And Natural Forested Wetlands In Southeastern Virginia, Sharon Ann Haines
Comparison Of Sapling Community Structure In Created And Natural Forested Wetlands In Southeastern Virginia, Sharon Ann Haines
Biological Sciences Theses & Dissertations
Forested wetlands are being destroyed at a rapid rate. Wetlands are valuable for flood control, aquifer recharge, and for their role in denitrification and storage of global carbon. When wetlands are lost, their functions and value to humans are lost as well. One response to the continued development of wetlands has been the artificial creation of new wetlands. This study compared the species density, relative density, coverage and frequency of occurrence of the woody vegetation in two southeastern Virginia created wetlands with that in two reference wetlands, also in southeastern Virginia, to determine the structural similarity of their respective communities. …
A Lighter Shade Of Green: Reproducing Nature In Central Florida, Kevin Archer
A Lighter Shade Of Green: Reproducing Nature In Central Florida, Kevin Archer
All Faculty Scholarship for the School of Graduate Studies and Research
No abstract provided.
Survey Of The Fishes In Streams Drainig The Jack Mountain Area, Hot Springs And Garland Counties, Arkansas, With Notes On The Ouachita Madtom (Noturus Lachneri), Renn Tumlison, Creed Tumlison
Survey Of The Fishes In Streams Drainig The Jack Mountain Area, Hot Springs And Garland Counties, Arkansas, With Notes On The Ouachita Madtom (Noturus Lachneri), Renn Tumlison, Creed Tumlison
Journal of the Arkansas Academy of Science
No abstract provided.
Csrees Department Of Forestry, Fisheries & Wildlife Comprehensive Review, University Of Nebraska - Lincoln
Csrees Department Of Forestry, Fisheries & Wildlife Comprehensive Review, University Of Nebraska - Lincoln
School of Natural Resources: Documents and Reviews
No abstract provided.
Aquatic Macroinvertebrates Of The White River National Wildlife Refuge, Arkansas, Stephen W. Chordas Iii, George L. Harp, G. W. Wolfe
Aquatic Macroinvertebrates Of The White River National Wildlife Refuge, Arkansas, Stephen W. Chordas Iii, George L. Harp, G. W. Wolfe
Journal of the Arkansas Academy of Science
The objectives of this study were to survey the diversity of the aquatic macroinvertebrates ofthe White River National Wildlife Refuge (WRNWR) and determine relative abundances and distributional and seasonal patterns. No comprehensive investigation of WRNWR aquatic macroinvertebrates had been conducted previously. Thirty sampling stations were established within WRNWR. Each station was sampled twice, providing 60 totalsamples, for 1.5 man hours witha Turtox Indestructible™ dip net. Three black light trap samples were taken to augment the species list. A total of 15,056 individuials representing 219 taxa was taken by dip net samples during the sampling period October 1989-September 1990. Insects comprised …
Techniques For Radiotracking And Biotelemetry Of Coolwater Sport Fish In Norfork Reservoir, Arkansas, Kenda S. Flores
Techniques For Radiotracking And Biotelemetry Of Coolwater Sport Fish In Norfork Reservoir, Arkansas, Kenda S. Flores
Journal of the Arkansas Academy of Science
Sonic and radio transmitters were implanted in 19 fish in Norfork Reservoir (12 walleye and seven striped bass) to determine the better transmitter type for two coolwater fish species in riverine and deep basin habitats. Radio transmit ters were equipped with either internal or external antennas and both radio and sonic transmitters had thermistors. Sonic transmitters proved superior to radio transmitters forlocating tagged fish after stratification. Fish implanted with radk transmitters were not found after July while fish implanted with sonic transmitters were located 87% of the time. Walleyt remained in the spring-fed riverine portion ofthe reservoir where water temperatures …
Biodiversity Of Camp Joseph T. Robinson Military Installation In North Little Rock, Arkansas 1994-1995, Joseph R. Penor, Alvan A. Karlin, Gary A. Heidt
Biodiversity Of Camp Joseph T. Robinson Military Installation In North Little Rock, Arkansas 1994-1995, Joseph R. Penor, Alvan A. Karlin, Gary A. Heidt
Journal of the Arkansas Academy of Science
In 1994 the University of Arkansas - Little Rock (UALR), in cooperation with the Nature Conservancy and the Arkansas Natural Heritage Commission, began a faunal assessment of Camp Joseph T. Robinson MilitaryInstallation in North LittleRock, Arkansas. The purpose ofthe study was (1) to determine the distribution and the abundance ofnative ? fauna on the installation, (2) to survey the installation for rare and endangered species, and (3) to determine the impact ofhuman activities on sensitive habitats and on the fauna. During the fall (1994-1996), winter (1995-1996) and spring « (1995-1996) seasons, mammals were located by either live-trapping, mist-netting, scent stations, …
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.
Subspecific Recognition In Arkansas Ringneck Snakes (Diadophis Punctatus), Stanley E. Trauth
Subspecific Recognition In Arkansas Ringneck Snakes (Diadophis Punctatus), Stanley E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
Final Environmental Impact Statement For The Bal'diyaka Interpretive Center At Gregory Point On The Oregon Coast In Coos County, Joseph A. Maser
Final Environmental Impact Statement For The Bal'diyaka Interpretive Center At Gregory Point On The Oregon Coast In Coos County, Joseph A. Maser
Environmental Science and Management Faculty Publications and Presentations
The Confederated Tribes of Coos, Lower Umpqua and Siuslaw Indians, in partnership with the Coos Bay District of the Bureau of Land Management (BLM) are proposing to construct and operate an interpretive center near or on the South Coast of Oregon, near Coos Bay. The Bal'diyaka Interpretive Center is envisioned to contain a 51,000 square foot main building, a recreated coastal Indian village, an ethnobotanical interpretive trail, vehicular circulation and parking, and utilities infrastructure.
This Environmental Impact Statement analyzes four alternatives for this proposed interpretive center. The proposed action of the BLM would locate the Bal'diyaka Interpretive Center on Gregory …
First Arkansas Records For Bigscale Logperch Percina Macrolepida Stevenson (Pisces: Percidae), With Comments On Habitat Preference And Distinctive Characters, Thomas M. Buchanan, Chad Hargrave, Drew Wilson, L. G. Claybrook, Philip W. Penny Jr.
First Arkansas Records For Bigscale Logperch Percina Macrolepida Stevenson (Pisces: Percidae), With Comments On Habitat Preference And Distinctive Characters, Thomas M. Buchanan, Chad Hargrave, Drew Wilson, L. G. Claybrook, Philip W. Penny Jr.
Journal of the Arkansas Academy of Science
Fish samples were collected with seines and rotenone from 21 localities representing five major habitat types along the Red River in Arkansas. The bigscale logperch, Percina macrolepida, was found at 11 of those sites, providing the first records ofthat species from the state. The primary preferred habitat parameters for bigscale logperch are no current, a sand and/or silt substrate, and a water depth of 1.0-2.0 m. Percina macrolepida is morphologically very similar to the widespread and common logperch, P. caprodes, but can be distinguished from all forms of that species in Arkansas by a combination of characters. Snout shape and …
Dietary Diversity And Overlap Between Two Subspecies Of Spadefoot Toads (Scaphiopus Holbrookii Holbrookii And S. H. Hurterii) In Arkansas, David H. Jamieson, Stanley E. Trauth
Dietary Diversity And Overlap Between Two Subspecies Of Spadefoot Toads (Scaphiopus Holbrookii Holbrookii And S. H. Hurterii) In Arkansas, David H. Jamieson, Stanley E. Trauth
Journal of the Arkansas Academy of Science
The food habits of adult spadefoot toads (Scaphiopus h. holbrookii and S. h. hurterii) collected in Arkansas were exam ined during this study. Thirty-six adult S. h. holbrookii (29 males and 7 females) and 48 adult S. h. hurterii (23 males and 2 females) were necropsied. Most specimens were collected over a 10-year span oftime (1985-94). Alltoads were taken from breeding aggregations which were visited periodically inany given year (frommid-February to late April).Prey items wer found in the stomachs of 13 (36.1%) of the S. h. holbrookii and 23 (48.0%) ofthe S. h. hurterii. Scaphiopus h. holbrookii and h. hurterii …
New Distributional Records For Freshwater Mussels In The Ouachita River, Arkansas, William R. Posey Ii, John L. Harris, George L. Harp
New Distributional Records For Freshwater Mussels In The Ouachita River, Arkansas, William R. Posey Ii, John L. Harris, George L. Harp
Journal of the Arkansas Academy of Science
Two freshwater mussel species thought to have been extirpated from Arkansas have recently been rediscovered in the Ouachita River in the vicinity of Camden. Prior to this survey, Wheeler (1918) last reported Arkansia wheeleri Ortmann and Walker, the Ouachita rock-pocketbook, and Cumberlandia monodonta (Say), the spectaclecase, from the Ouachita River near Arkadelphia. Quadrula apiculata (Lea), the southern mapleleaf, has been reported from Arkansas on two occasions, but due to taxonomic uncertainty, it has not been recognized in recent compilations of Arkansas freshwater mussels. During this survey, the southern mapleleaf was collected from the Ouachita River which verifies its occurrence within …
Distribution And Natural History Aspects Of The Arkansas Endemic Crayfish, Cambarus Causeyi Reimer, Henry W. Robison, Gene Leeds
Distribution And Natural History Aspects Of The Arkansas Endemic Crayfish, Cambarus Causeyi Reimer, Henry W. Robison, Gene Leeds
Journal of the Arkansas Academy of Science
Recent collections of the Arkansas endemic crayfish, Cambarus causeyi Reimer, have yielded important information concerning its distribution and habitat within the state. New locations and county records are enumerated, habitat preferences discussed, and status ofthis heretofore rare crayfish species is clarified.
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.
Microorganisms Associated With The Carapace And Plastron Of Aquatic Turtles (Pseudemys Concinna And Trachemys Scripta) In Southwestern Arkansas, Renn Tumlison, Sharon Clark
Microorganisms Associated With The Carapace And Plastron Of Aquatic Turtles (Pseudemys Concinna And Trachemys Scripta) In Southwestern Arkansas, Renn Tumlison, Sharon Clark
Journal of the Arkansas Academy of Science
No abstract provided.
Recent Record Of The White Sucker, Catostomus Commersoni, In The White River System, Arkansas, James C. Petersen, Faron D. Usrey, William E. Keith, James A. Wise
Recent Record Of The White Sucker, Catostomus Commersoni, In The White River System, Arkansas, James C. Petersen, Faron D. Usrey, William E. Keith, James A. Wise
Journal of the Arkansas Academy of Science
No abstract provided.
Leptodactylus Silvanimbus (Amphibia: Anura: Leptodactylidae): Natural History Notes, Advertisement Call, And Relationships, W. Ronald Heyer, Rafael O. De Sá, James R. Mccranie, Larry David Wilson
Leptodactylus Silvanimbus (Amphibia: Anura: Leptodactylidae): Natural History Notes, Advertisement Call, And Relationships, W. Ronald Heyer, Rafael O. De Sá, James R. Mccranie, Larry David Wilson
Biology Faculty Publications
In July 1995, we visited two of the three previously known localities for Leprodactylus silvanimbus in Departamento de Ocotepeque, Honduras. We found a new breeding site for the species, recorded its advertisement call, and collected and observed its adults and larvae. The purpose of this paper is to present the results of these new findings and to comment on the relationships L. silvanimbus.
Características De La Osificación Craneal En Phyllomedusa Boliviana (Anura: Hylidae), Rafael O. De Sá, E. O. Lavilla
Características De La Osificación Craneal En Phyllomedusa Boliviana (Anura: Hylidae), Rafael O. De Sá, E. O. Lavilla
Biology Faculty Publications
RESUMEN. Dentro de la familia Hylidae disponemos de información sobre las secuencias de osificación craneal para menos del 4.0% de sus miembros. El presente trabajo describe la secuencia de osificación craneal de Phyllomedusa boliviana. El patrón general de osificación es similar a lo reportado para otras especies de la familia, pero existen algunas diferencias importantes tales como la osificación tardía de los próoticos y la osificación premetamórfica de neopalatino, vómer, cuadrado-yugal, pterigoides y columela. El lento desarrollo ulterior de la osificación resulta en juveniles con cráneos extensamente cartilaginosos.
ABSTRACT. Characteristics of the cranial ossification in Phyllomedusa …
The Influence Of Environmental Ph And Bicarbonate Concentration On The Excretion Of Nitrogenous Waste Products In Two Species Of Freshwater Teleost, Paul D. Fabsits
The Influence Of Environmental Ph And Bicarbonate Concentration On The Excretion Of Nitrogenous Waste Products In Two Species Of Freshwater Teleost, Paul D. Fabsits
Masters Theses
The catabolism of amino acids derived from dietary protein results in the production of ammonia and bicarbonate ion, waste products that an animal must eliminate. Often, animals excrete a nitrogenous waste product that is correlated with water availability: Freshwater fish, living where water is abundant, usually excrete ammonia while terrestrial animals excrete urea or uric acid. Recent studies report that fish inhabiting alkaline waters (pH 10) characterized by high bicarbonate concentrations do not excrete ammonia, instead synthesize urea, an energetically expensive process. The conversion to urea excretion by a normally ammonotelic animal is likely to be stimulated by a specific …