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Articles 5281 - 5310 of 6143

Full-Text Articles in Biodiversity

Specimen Catalog, Forrest W. Davis May 1991

Specimen Catalog, Forrest W. Davis

Division of Mammals - Field Notes and Catalogs

No abstract provided.


Wpa News 32 (1991), World Pheasant Association May 1991

Wpa News 32 (1991), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (May 1991), number 32

Published by the World Pheasant Association


Phyletic Coevolution Between Subterranean Rodents Of The Genus Ctenomys (Rodentia: Hystricognathi) And Nematodes Of The Genus Paraspidodera (Heterakoidea: Aspidoderidae) In The Neotropics: Temporal And Evolutionary Implications, Scott Lyell Gardner May 1991

Phyletic Coevolution Between Subterranean Rodents Of The Genus Ctenomys (Rodentia: Hystricognathi) And Nematodes Of The Genus Paraspidodera (Heterakoidea: Aspidoderidae) In The Neotropics: Temporal And Evolutionary Implications, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Coevolution was studied in six species of rodents of the genus Ctenomys and their parasitic nematodes of the genus Paraspidodera, collected in Bolivia. Representatives of the families Octodontidae and Caviidae were used as outgroups for the mammals, and nematodes from caviids were used as outgroups of the nematodes from ctenomyids. For the nematodes, quantitative and qualitative morphological characteristics of both males and females and electrophoretic characters of both sexes were used to generate phylogenetic hypotheses of evolutionary relationships of the OTUs occurring in hosts of different species. Concordance estimates of cladograms generated from biochemical-genetic and morphological data of the …


The Prairie Naturalist Volume 23, No. 1. March 1991 Mar 1991

The Prairie Naturalist Volume 23, No. 1. March 1991

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

AGRICULTURAL LAND USE AND MOURNING DOVES IN EASTERN COLORADO: IMPLICATIONS FOR NESTING AND PRODUCTION IN THE GREAT PLAINS ▪ T E. Olson, C. E. Braun, and R. A. Ryder

DISTRIBUTION OF SANDHILL CRANES IN THE NORTH PLATTE RIVER VALLEY 1980 AND 1989 ▪ M. J. Folk and T. C. Tacha

NOCTURNAL BEHAVIOR OF SANDHILL CRANES ROOSTING IN THE PLATTE RIVER, NEBRASKA ▪ B. S. Norling, S. H. Anderson, and W A. Hubert

LEAD POISONING OF A MARBLED GODWIT ▪ L. N. Locke, M. R. …


Pasture Condition Guides For The Murchison River Catchment, A Fox, T R. Eckersley Jan 1991

Pasture Condition Guides For The Murchison River Catchment, A Fox, T R. Eckersley

Soil conservation survey collection

Knowledge of the pasture resource and its capabilities is essential to sustainable use of the rangelands. Rangeland managers must be able to recognise firstly the different pasture types, and secondly, the differences between present condition classes for each type. Both factors affect the stock carrying capacity, and appropriate pastoral management of a pasture. This guide has been produced for use by pastoralists to assist them to recognise and assess the condition of the perennial pasture resource of their own properties. The guide describes the condition states found in 10 of the most widespread pastures of the Murchison River catchment (Fig. …


Specimen List, Lila Alejandra Sainz-Bacherer Jan 1991

Specimen List, Lila Alejandra Sainz-Bacherer

Division of Mammals - Field Notes and Catalogs

No abstract provided.


Black-Capped Vireo Recovery Plan, Joseph A. Grzybowski Jan 1991

Black-Capped Vireo Recovery Plan, Joseph A. Grzybowski

Endangered Species Bulletin

Current Species Status: This species is listed as endangered. The number of individuals is unknown. However, it has undergone substantial range reduction in Kansas, Oklahoma, and Texas. It is extirpated in Kansas, and the Oklahoma population is below 300 birds. Declines have also been documented over much of the species’ range in Texas. Its status is uncertain in Coahuila, Mexico.

Habitat Requirements and Limiting Factors: The black-capped vireo occurs in mixed deciduous/evergreen shrubland. Breeding vireos use shrubby growth of irregular height and distribution with spaces between the small thickets and clumps and with vegetative cover extending to ground …


Grouse News 1-10 (1991-1995), World Pheasant Association International, Diana Lovel Jan 1991

Grouse News 1-10 (1991-1995), World Pheasant Association International, Diana Lovel

Galliformes Specialist Group and Affiliated Societies: Newsletters

Issue 1 (March 1991)

Editorial, Diana Lovel

Tetraonid study register and abstracting function

Decline of black grouse, Egbert Strauss

Work at Grimso, Jon Swenson

Grouse: Captive breeding and reintroductions, Lain Valentine

How effective is the release of captive bred capercaillie? David Baines

Size of display grounds of capercaillie, E. Viht

New capercaillie research in Scotland, David Baines

Radiotracking of reintroduced black grouse abstract, Stefan Hövel, Sepp Bauer, and Egbert Strauss

Dogs can't find my ptarmigan, David Hancock

Red grouse: The north of England 1990, David Newborn

A second workshop on black grouse, David Baines

Obituary, in memory of Oleg Ismailovich …


The Cracid Newsletter 1(1)-5 (1991-1997), Iucn, Birdlife International, Wpa Cracid Specialist Group Jan 1991

The Cracid Newsletter 1(1)-5 (1991-1997), Iucn, Birdlife International, Wpa Cracid Specialist Group

Galliformes Specialist Group and Affiliated Societies: Newsletters

Volume1, Number 1 (Autumn 1991)

Editors: Angela Schmitz and Richard Buchholz

Status of the highly endangered white-winged guan Penelope albipennis, Victor Raul Diaz Montes

Formation of the WPA-ICBP-SSC-IUCN Cracidae Specialist Group

Cracidae Specialist Group Policy Statement

CSG Action Plan, 1990-1995

Cracid news from around the world: Central America, South America, Europe, and USA

Volumen 2, Numero 2 (Junio 1993)

Editores: Angela Schmitz and Richard Buchholz

Primer intento de introducción de un crácido en peligro, Geer Scheres

El pavon Oreoplasis derbianus protegido y desprotegido, Fernando González García

Técnicas demográficas de posible uso en crácidos, David B. McDonald

Noticias desde el …


Wpa News 31 (1991), World Pheasant Association Jan 1991

Wpa News 31 (1991), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (January 1991), number 31

Published by the World Pheasant Association


Slope Effects On Shortwave Radiation Components And Net Radiation: Interim Report For Period April 1, 1991- December 31, 1991, E. A. Walter-Shea, B. L. Blad, C. J. Hays, M. A. Mesarch Jan 1991

Slope Effects On Shortwave Radiation Components And Net Radiation: Interim Report For Period April 1, 1991- December 31, 1991, E. A. Walter-Shea, B. L. Blad, C. J. Hays, M. A. Mesarch

School of Natural Resources: Documents and Reviews

No abstract provided.


Wildlife Corridors In The Wheatbelt, Richard Hobbs, Denis Saunders Jan 1991

Wildlife Corridors In The Wheatbelt, Richard Hobbs, Denis Saunders

Journal of the Department of Agriculture, Western Australia, Series 4

Native vegetation in the Western Australian wheatbelt now persists mostly in small areas that remained uncleared for various reasons. (See 'Remnant vegetation on farms is a valuable resource' on page 43.) On their own, most of these remnant areas are difficult to manage, and too small to retain viable populations of many of the birds and other animals found in the wheatbelt. These patches of vegetation can be linked by wildlife corridors, which may increase the ability of the wildlife to move about and persist in the area


Specimen Catalog, Robert W. Dickerman Jan 1991

Specimen Catalog, Robert W. Dickerman

Division of Mammals - Field Notes and Catalogs

No abstract provided.


Introgression Of Coyote Mitochondrial Dna Into Sympatric North American Gray Wolf Populations, Niles Lehman, Andrew Eisenhawer, Kimberly Hansen, L. David Mech, Rolf O. Peterson, Peter J. P. Gogan, Robert K. Wayne Jan 1991

Introgression Of Coyote Mitochondrial Dna Into Sympatric North American Gray Wolf Populations, Niles Lehman, Andrew Eisenhawer, Kimberly Hansen, L. David Mech, Rolf O. Peterson, Peter J. P. Gogan, Robert K. Wayne

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Mitochondrial DNA (mtDNA) genotypes of gray wolves and coyotes from localities throughout North America were determined using restriction fragment length polymorphisms. Of the 13 genotypes found among the wolves, 7 are clearly of coyote origin, indicating that genetic transfer of coyote mtDNA into wolf populations has occurred through hybridization. The transfer of mtDNA appears unidirectional from coyotes into wolves because no coyotes sampled have a wolf-derived mtDNA genotype. Wolves possessing coyote-derived genotypes are confined to a contiguous geographic region in Minnesota, Ontario, and Quebec, and the frequency of coyote- type mtDNA in these wolf populations is high (> 500%). The …


Lists Of Larval Worms From Marine Invertebrates Of The Pacific Coast Of North America, Hilda Lei Ching Jan 1991

Lists Of Larval Worms From Marine Invertebrates Of The Pacific Coast Of North America, Hilda Lei Ching

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Immature stages of seventy-three digenetic trematodes are listed by their families, marine invertebrate hosts, and localities and then cross listed according to their molluscan hosts. The list contains many new host records, and larval stages of fifteen digenetic trematodes were newly recorded from gastropods from British Columbia and California. A list of immature stages of fourteen cestodes, acanthocephaIans, and nematodes is also included.


Potential Impacts Of Biomass Production In The United States On Biological Diversity, James H. Cook, Jan Beyea, Kathleen H. Keeler Jan 1991

Potential Impacts Of Biomass Production In The United States On Biological Diversity, James H. Cook, Jan Beyea, Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Biomass could be a renewable source of energy and chemicals that would not add CO2 to the atmosphere. It will become economically competitive as its cost decreases relative to energy costs, and biotechnology is expected to accelerate this trend by increasing biomass productivity. Pressure to slow global warming may also make biomass more attractive. Substantial dependence on biomass would entail massive changes in land use, risking serious reductions in biodiversity through destruction of habitat for native species. Forests could be managed and harvested more intensively, and virtually all arable land unsuitable for high-value agriculture or silviculture might be used …


Redescription Of Eimeria Escomeli (Rastegaieff, 1930) From Myrmecophaga Tridactyla, And A First Report From Bolivia, Scott Lyell Gardner, Steve Upton, C. R. Lambert, O. C. Jordán Jan 1991

Redescription Of Eimeria Escomeli (Rastegaieff, 1930) From Myrmecophaga Tridactyla, And A First Report From Bolivia, Scott Lyell Gardner, Steve Upton, C. R. Lambert, O. C. Jordán

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Eimeria escomeli (Rastegaieff, 1930) Levine and Becker, 1933, is redescribed from the giant anteater, Myrmecophaga tridactyla (L.), from the departamento de La Paz, Bolivia. This is the first report of parasites from M. tridactyla from Bolivia and only the third time that coccidians have been recorded from this host.


The Distribution And Reproductive Phenology Of The Milkweeds (Asclepiadaceae: Asclepias And Cynanchum) In Nebraska, Robert B. Kaul, Steven B. Rolfsmeier, Jeffrey J. Esch Jan 1991

The Distribution And Reproductive Phenology Of The Milkweeds (Asclepiadaceae: Asclepias And Cynanchum) In Nebraska, Robert B. Kaul, Steven B. Rolfsmeier, Jeffrey J. Esch

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The Asclepiadaceae are represented in Nebraska by seventeen native species of Asclepias and one of Cynanchum. Two species are here added to the State's flora: Asclepias asperula and A. purpurascens. Detailed county distribution maps are presented for all species based upon our extensive field and herbarium work, and numerous additions and corrections are made to the maps published in the Atlas of the Flora of the Great Plains in 1977. A map is presented showing the zone of hybridization of A. speciosa with A. syriaca in central Nebraska. Data are given on flowering and fruiting phenology for each …


New And Corrected Floristic Records For Nebraska, Steven B. Rolfsmeier, Robert B. Kaul, David M. Sutherland Jan 1991

New And Corrected Floristic Records For Nebraska, Steven B. Rolfsmeier, Robert B. Kaul, David M. Sutherland

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Nineteen species (including eight Eurasian ones) are newly recorded for Nebraska: Alopecurus arundinaceus, Amaranthus californicus, Asclepias asperula, A. purpurascens, Cardamine {lexuosa*, Centaurea diffusa, Dipsacus laciniatus, Eriochloa villosa, Euclidium syriacum, Gentiana alba, Geranium viscosissimum, Geum vernum, Goodyera oblongifolia, Haplopappus multicaulis, Heterotheca latifolia, Lathyrus tuberosus, Polygonum douglasii, Scirpus saximontanus, Veronica biloba. Twenty-one others are shown to be more widespread in Nebraska than previously known, one has a more restricted range than previously reported, two (Scirpus smithii, S. torreyi) are deleted from the flora based upon corrected identifications, and the status of some rarely-collected species is updated. Thirty-two additions, two …


Polymorphism Of Eimerian Oocysts Can Be A Problem In Naturally Infected Hosts: An Example From Subterranean Rodents In Bolivia, Scott Lyell Gardner, Donald W. Duszynski Dec 1990

Polymorphism Of Eimerian Oocysts Can Be A Problem In Naturally Infected Hosts: An Example From Subterranean Rodents In Bolivia, Scott Lyell Gardner, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Since 1986, 364 tuco-tucos (Ctenomys spp.) representing 7 species were collected from 16 major collecting areas representing at least 4 distinct ecological habitats in Bolivia, South America. All were examined for coccidia, and 125 (34%) had oocysts in their feces including 84 of 236 (36%) Ctenomys boliviensis from tropical palm/savanna habitats; 1 of 3 (33%) C. conoveri from a chaco thorn forest; 3 of 7 (33%) C. frater from medium altitude grass habitats; and 6 of 8 (75%) C. lewisi and 31 of 35 (88%) C. opimus from high altitude/puna habitats. None of 3 C. …


The Prairie Naturalist Volume 22, No. 4. December 1990 Dec 1990

The Prairie Naturalist Volume 22, No. 4. December 1990

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

DISTRIBUTION AND STATUS OF GREATER PRAIRIE-CHICKENS IN COLORADO ▪ B. F. Van Sant and C. E. Braun

IMPORTANCE OF AN OLD, MULTIPLE-USE RESERVOIR TO MIGRATING AND WINTERING DABBLING DUCKS ▪ D. M. Leslie, Jr. , and W. J. Stancill

SIMILARITY OF MALLARD NESTING ON A SOUTH DAKOTA ISLAND BETWEEN 1967-68 and 1985-87 ▪ S. G. Simpson and D. Limmer

BOBCAT HABITAT USE IN SOUTHEASTERN MONTANA DURING PERIODS OF HIGH AND LOW LAGOMORPH ABUNDANCE ▪ B. J. Giddings, G. L. Risdahl, and L. R. Irby …


Wpa News 30 (1990), World Pheasant Association Nov 1990

Wpa News 30 (1990), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (November 1990), number 30

Published by the World Pheasant Association


Pheasants In Asia 1989, David A. Hill, Peter J. Garson, David Jenkins Oct 1990

Pheasants In Asia 1989, David A. Hill, Peter J. Garson, David Jenkins

Galliformes Specialist Group and Affiliated Societies: Conference Proceedings

Section 1: Studies of Pheasants in China

Distribution and Status

An overview of research on pheasants in China, 1978-88, Cheng Tso-Hsin

Pheasant conservation in Asia:Ssome introductory remarks, Keith Howman and Lew Young

The distribution of pheasants and partridges in China, Tang Chan-Zhu

The ecological and geographical distribution of pheasants in Wolong Nature Reserve, Deng Wei Jie

The gamebirds of Boaxing, Sichuan, China, He Fen-Qi and Cui Xie-Zhen

Galliformes of Yunnan Province in China, Yang Lan

Pheasant and partridge species of the Nu River Autonomous Region, Northwestern Yunnan, China, He Fen-Qi, Gao Ying-Xing and Zheng Yang-Zhi

Pheasants on the Qinghai-Xizang Plateau, …


Endangered And Threatened Wildlife And Plants; Determination Of Endangered Status For The Pallid Sturgeon Sep 1990

Endangered And Threatened Wildlife And Plants; Determination Of Endangered Status For The Pallid Sturgeon

Endangered Species Bulletin

The Service determines the pallid sturgeon (Scaphirhynchus albus) to be an endangered species under authority of the Endangered Species Act (Act) of 1973. Critical habitat is not being designated. The pallid sturgeon is a large fish known only to occur in the Missouri River, the Mississippi River downstream of the Missouri River, and the lower Yellowstone River. The species is threatened through habitat modification, apparent lack of natural reproduction, commercial harvest, and hybridization in parts of its range. This rule identifies the taxon as one in need of conservation, implements protective measures, and makes available recovery measures provided …


The Prairie Naturalist Volume 22, No. 3. September 1990 Sep 1990

The Prairie Naturalist Volume 22, No. 3. September 1990

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

ASSEMBLAGES OF SMALL FISH IN THREE HABITAT TYPES ALONG THE PLATTE RIVER, NEBRASKA ▪ D. T. O'Shea, W. A. Hubert, and S. H. Anderson

SPAWNING HABITAT OF CHANNEL CATFISH IN THE POWDER RIVER SYSTEM, WYOMING-MONTANA D. R. Gerhardt and W. A. Hubert

OCCURRENCE OF AMERICAN WHITE PELICANS ALONG THE PLATTE RIVER, NEBRASKA ▪ J. G. Sidle, C. A. Faanes, and W. G. Jobman

DIET OF CANVASBACKS DURING BREEDING ▪ J. E. Austin, J. R. Serie, and J. H. Noyes

BROOD HABITAT USE OF RIO …


Wpa News 29 (1990), World Pheasant Association Aug 1990

Wpa News 29 (1990), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (August 1990), number 29

Published by the World Pheasant Association


Small Mammals In The Great Dismal Swamp Of Virginia And North Carolina, Robert K. Rose, Roger K. Everton, Jean F. Stankavich Jul 1990

Small Mammals In The Great Dismal Swamp Of Virginia And North Carolina, Robert K. Rose, Roger K. Everton, Jean F. Stankavich

Biological Sciences Faculty Publications

Small" mammals were surveyed in a range of habitats in the Great Dismal Swamp of Virginia and North Carolina. The survey is based on three chronologically overlapping studies, each lasting 15-18 months and for which the results have been reported separately. A different trapping method was used in each of the three studies: nest boxes, Fitch live traps, or pitfall traps. Only two species of mammals, both arboreal, were taken in nest boxes, compared with 10 and 9 species in Fitch live traps and pitfall traps, respectively. The Fitch live traps had a much higher catch rate per 1,000 trap-nights …


Reproduction In The Hispid Cotton Rat, Sigmodon-Hispidus Say And Ord (Rodentia: Muridae), In Southeastern Virginia, Robert K. Rose, Michael H. Mitchell Jul 1990

Reproduction In The Hispid Cotton Rat, Sigmodon-Hispidus Say And Ord (Rodentia: Muridae), In Southeastern Virginia, Robert K. Rose, Michael H. Mitchell

Biological Sciences Faculty Publications

The hispid cotton rat, Sigmodon hispidus Say and Ord, a species of the southwestern United States that has been moving northward and eastward in this century, was first observed in Virginia in 1940. In this study of the cotton rat in southeastern Virginia, most males were reproductively competent from February through November, embryos were recorded from March through October, and litter sizes were comparable to those from other locations except Kansas. Also unlike the cotton rat in Kansas, animals grew at substantial rates during the winter in Virginia. The hispid cotton rat seems to have adjusted its breeding season in …


The Role Of Market Transfers In The Accommodation Of New Uses: A Case Study Of The Truckee-Carson Basin, A. Dan Tarlock Jun 1990

The Role Of Market Transfers In The Accommodation Of New Uses: A Case Study Of The Truckee-Carson Basin, A. Dan Tarlock

Moving the West's Water to New Uses: Winners and Losers (Summer Conference, June 6-8)

31 pages (includes 1 map).


Evaluating Judicial Capacity To Determine Public Welfare Values In Water Transfers, Charles T. Dumars Jun 1990

Evaluating Judicial Capacity To Determine Public Welfare Values In Water Transfers, Charles T. Dumars

Moving the West's Water to New Uses: Winners and Losers (Summer Conference, June 6-8)

31 pages (includes illustrations).

Contains references.