Open Access. Powered by Scholars. Published by Universities.®

Terrestrial and Aquatic Ecology Commons

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 5461 - 5490 of 6306

Full-Text Articles in Terrestrial and Aquatic Ecology

An Overview Of The Endangered Species Act, Michael J. Brennan Jun 1996

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 Jun 1996

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 Jun 1996

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. Jun 1996

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 Jun 1996

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 Jun 1996

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 Jun 1996

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 Jun 1996

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 May 1996

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 Apr 1996

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 Apr 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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. Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 Jan 1996

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 …