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Articles 211 - 240 of 344
Full-Text Articles in Terrestrial and Aquatic Ecology
Proceedings Of The Thirteenth North American Crane Workshop, Abstracts, David A. Aborn, Richard P. Urbanek
Proceedings Of The Thirteenth North American Crane Workshop, Abstracts, David A. Aborn, Richard P. Urbanek
Proceedings of the North American Crane Workshop
AGE-SPECIFIC SURVIVAL OF GREATER SANDHILL CRANE COLTS IN NEVADA. Chad August, Jim Sedinger, and Chris Nicolai 111
WHOOPING CRANE DISTRIBUTION AND HABITAT USE: PAST, PRESENT, AND FUTURE? Jane Austin, Matthew Hayes, and Jeb Barzen 111
BEHAVIORAL MOVEMENTS OF ARANSAS-WOOD BUFFALO WHOOPING CRANES: ANOMALIES OR INDICATIONS OF WAYS TO FURTHER ENHANCE SPECIES RECOVERY. David Baasch, Mark Bidwell, Wade Harrell, Kris Metzger, Aaron Pearse, and Mary Harner 112
INFLUENCES ON NEST SUCCESS IN A REINTRODUCED POPULATION OF WHOOPING CRANES. Jeb Barzen, Sarah Converse, Peter Adler, Elmer Gray, Anne Lacy, Eva Szyszkoski, and Andrew Gossens 113
DETERMINING DIET COMPOSITION AND INGESTION RATE OF …
Size Difference In Whooping Cranes Reared For Two Reintroduction Methods, Richard P. Urbanek, Marianne M. Wellington, Sabrina Servanty
Size Difference In Whooping Cranes Reared For Two Reintroduction Methods, Richard P. Urbanek, Marianne M. Wellington, Sabrina Servanty
Proceedings of the North American Crane Workshop
We investigated a possible size difference in whooping cranes (Grus americana) captive-reared for 2 reintroduction methods to establish a migratory population in eastern North America. Cranes reared for ultralight aircraft-led migration (UL) to Florida were significantly larger than cranes reared for direct autumn release (DAR) on the natal area in central Wisconsin. Mean tarsal length was 315.5 ± 0.98 (1 SE) and 308.1 ± 1.87 mm, respectively, for UL and DAR males and 296.9 ± 1.03 and 290.8 ± 2.60 mm, respectively, for UL and DAR females. Because of the different rearing schedules, eggs for the DAR method …
Effects Of Wind Farms On Sand Hill Crane Play An Occupancy On The Texas High Plains, Laura Navarrete, Kerry L. Griffis-Kyle
Effects Of Wind Farms On Sand Hill Crane Play An Occupancy On The Texas High Plains, Laura Navarrete, Kerry L. Griffis-Kyle
Proceedings of the North American Crane Workshop
Wind energy is essential for a shift to carbon-emission free energy, however there has been very little research investigating the disturbance caused by wind farms on the landscape. Texas is a leading state in wind power capacity, and the High Plains of Texas support over 80% of the midcontinent population of sandhill cranes (Grus canadensis) every winter. Historically, cranes used saline lakes for fresh water and predator protection, but recent hydrological changes due to agricultural practices have reduced the availability of the lakes for wintering birds. Playa wetlands currently represent the main source of water and roosting habitat in the …
High Nest Density Of Sandhill Cranes In Central Wisconsin, Jeb A. Barzen, Liying Su, Anne E. Lacy, Andrew P. Gossens, Dorn M. Moore
High Nest Density Of Sandhill Cranes In Central Wisconsin, Jeb A. Barzen, Liying Su, Anne E. Lacy, Andrew P. Gossens, Dorn M. Moore
Proceedings of the North American Crane Workshop
We conducted aerial surveys to determine nest locations of greater sandhill cranes (Grus canadensis tabida) in central Wisconsin, 2001-2003. Helicopter flights covered 8.90 km2 of wetlands in each year, and we found 41 nests in 2001, 50 nests in 2002, and 48 nests in 2003 from 11 wetlands. Our best estimate of nest density (n = 14) included wetlands containing 5 or more nests and averaged 5.25 ± 0.36 (1 SE) nests/km2 of wetland. Maximum nest density of larger wetlands in any 1 year was 7.80 nests/km2. As some nests had likely failed by …
Evaluation Of A Nutraceutical Joint Supplement In Cranes, Kendra L. Bauer, Ellen S. Dierenfeld, Barry K. Hartup
Evaluation Of A Nutraceutical Joint Supplement In Cranes, Kendra L. Bauer, Ellen S. Dierenfeld, Barry K. Hartup
Proceedings of the North American Crane Workshop
Osteoarthritis is a problem that threatens the reproductive capabilities of captive populations of endangered cranes. In our pilot study, we used 5 cranes with a history of unilateral, chronic tarsal pathology in a cross-over design to gauge the effects of the primary ingredient (NEM®, ESM Technologies LLC, Carthage, MO) of the nutraceutical Steadfast® (Novus Nutrition Brands, LLC, St. Charles, MO). We evaluated the ingredient for acceptance, safety, and short-term efficacy. To evaluate efficacy, we collected goniometric measures to determine range of motion in each tarsal joint before and after a 5-week experimental period where NEM® was offered in pelleted feed. …
Hematology Results From Experimental Exposure Of Sandhill Cranes To West Nile Virus, Glenn H. Olsen
Hematology Results From Experimental Exposure Of Sandhill Cranes To West Nile Virus, Glenn H. Olsen
Proceedings of the North American Crane Workshop
West Nile virus (WNV), a Flavivirus, was introduced into New York City in 1999 (Centers for Disease Control 1999, Enserink 1999). In the past decade the virus has spread across the continental United States and southern Canada, resulting in large numbers of deaths among native bird species (Anderson et al. 1999, Calle et al. 2000). The U.S. Geological Survey (USGS) Patuxent Wildlife Research Center in Laurel, Maryland, is home to the world’s largest collection of cranes. These cranes are used for research and for reintroduction programs. As of 20 October 2016, this collection included 77 of the highly endangered whooping …
Photoperiod And Nesting Phenology Of Whooping Cranes At Two Captive Sites, Glenn H. Olsen
Photoperiod And Nesting Phenology Of Whooping Cranes At Two Captive Sites, Glenn H. Olsen
Proceedings of the North American Crane Workshop
Increasing day length is considered to be a stimulus to breeding in many avian species in northern latitudes (Welty 1975). Crane species that breed in high latitudes include Siberian crane (Leucogeranus leucogeranus), lesser sandhill crane (Grus canadensis canadensis), hooded crane (G. monacha), and whooping crane (G. americana). The first captive breeding records for hooded and Siberian cranes were induced with the use of artificially extended photoperiods (Mirande et al. 1996). Most likely, cranes that breed in mid-latitudes also respond to increasing daylight. In 1 study, captive greater sandhill cranes (G. c. …
Differential Detection Of Territorial And Non-Territorial Greater Sandhill Cranes In Summer, Lindsey F. Mckinney, Jeb A. Barzen, Jason D. Riddle, Shelli A. Dubay, Tim F. Ginnett
Differential Detection Of Territorial And Non-Territorial Greater Sandhill Cranes In Summer, Lindsey F. Mckinney, Jeb A. Barzen, Jason D. Riddle, Shelli A. Dubay, Tim F. Ginnett
Proceedings of the North American Crane Workshop
Abundance estimates allow wildlife managers to make informed management decisions, but differential detectability of individuals can lead to biased estimates of abundance. Our objective was to quantify detectability for non-territorial and territorial sandhill cranes (Grus canadensis tabida) during summer. We hypothesized that territorial sandhill cranes would be detected more often than non-territorial cranes. In 2009, 3 wetland areas were surveyed 2 days per week during the nesting season near Briggsville, Wisconsin. We created capture histories for color-marked territorial (n = 52) and color-marked nonterritorial cranes (n = 23) and used the Huggins closed capture model in …
Serum Chemistry, Blood Gas, And Physiological Measures Of Sandhill Cranes Sedated With Alpha-Chloralose, Richard R. Sim, Barry K. Hartup
Serum Chemistry, Blood Gas, And Physiological Measures Of Sandhill Cranes Sedated With Alpha-Chloralose, Richard R. Sim, Barry K. Hartup
Proceedings of the North American Crane Workshop
Capture techniques that lessen handling stress may also lessen pathologic influences on physiologic measures, improving the validity of these measures for use in individual health assessment of freeranging wildlife. Since 1990, the International Crane Foundation (ICF) has successfully used chemical immobilization with alpha-chloralose (AC; C6H11Cl3O6), a chloral derivative of glucose, to facilitate captures of sandhill cranes (Grus canadensis tabida) for ecological studies (Hayes et al. 2003). Although this chemical has been used orally for the immobilization of many species, the physiologic effects of AC are not well understood in cranes. …
Tylosin Tartrate Promotes Resolution Of Insect Bite Hypersensitivity Reactions In Captive Cranes, Alina Kelman, Barry K. Hartup
Tylosin Tartrate Promotes Resolution Of Insect Bite Hypersensitivity Reactions In Captive Cranes, Alina Kelman, Barry K. Hartup
Proceedings of the North American Crane Workshop
Previous research has described significant serum protein electrophoretic changes associated with intense periocular swelling in several crane species, typical of Type I hypersensitivity reactions, and thought to be the result of insect bites (Hartup and Schroeder 2006). We reviewed medical records for treatment plans and outcomes from 58 cases of insect hypersensitivity reactions observed in a diverse collection of captive cranes at the International Crane Foundation, Baraboo, Wisconsin. The purpose of this study was to fully describe the epidemiological and clinical characteristics of these cases, and determine the efficacy of treatment of these cases with tylosin tartrate, a macrolide antibiotic. …
Timing Of Family Dissociation Does Not Affect Long-Term Survival Estimates Of Sandhill Crane Chicks, Matthew A. Hayes, Jeb A. Barzen
Timing Of Family Dissociation Does Not Affect Long-Term Survival Estimates Of Sandhill Crane Chicks, Matthew A. Hayes, Jeb A. Barzen
Proceedings of the North American Crane Workshop
Sandhill crane (Grus canadensis) chicks depend on their parents beyond fledging, but timing of chick separation from their parents has rarely been quantified and reported. We color-banded and radio-tagged sandhill crane chicks on known natal territories in south-central Wisconsin and monitored family groups to determine age of chick independence. Using a Cormack-Jolly-Seber open population model in program MARK, we estimated survival for chicks that dissociated from their parents prior to fall migration, over winter (including migration), and following spring migration. Of 96 chicks with a known timing of dissociation from their parents, 11 (12%) became independent from their …
Distribution, Densities, And Ecology Of Siberian Cranes In The Khroma River Region Of Northern Yakutia In Northeastern Russia, Inga P. Bysykatova, Gary L. Krapu, Nicolai I. Germogenov, Deborah A. Buhl
Distribution, Densities, And Ecology Of Siberian Cranes In The Khroma River Region Of Northern Yakutia In Northeastern Russia, Inga P. Bysykatova, Gary L. Krapu, Nicolai I. Germogenov, Deborah A. Buhl
Proceedings of the North American Crane Workshop
The Siberian crane (Grus leucogeranus) is the third rarest crane species in the world with a breeding range now centered on 3 core areas and a buffer zone in the arctic of northern Yakutia in northeastern Russia. During 16 July-2 August 2009, we undertook ground surveys within the Khroma River core breeding area, surrounding buffer zone, and lands lying to the west of the known breeding range to estimate densities and determine habitat use and social status of Siberian cranes. A total of 142 Siberian cranes were sighted (including 55 pairs) at 54 locations with 32 cranes (including 13 pairs) …
Proceedings Of The 13th North American Crane Workshop Abstracts
Proceedings Of The 13th North American Crane Workshop Abstracts
Proceedings of the North American Crane Workshop
AGE-SPECIFIC SURVIVAL OF GREATER SANDHILL CRANE COLTS IN NEVADA Chad August, Jim Sedinger, and Chris Nicolai 111
WHOOPING CRANE DISTRIBUTION AND HABITAT USE: PAST, PRESENT, AND FUTURE? Jane Austin, Matthew Hayes, and Jeb Barzen 111
BEHAVIORAL MOVEMENTS OF ARANSAS-WOOD BUFFALO WHOOPING CRANES: ANOMALIES OR INDICATIONS OF WAYS TO FURTHER ENHANCE SPECIES RECOVERY. David Baasch, Mark Bidwell, Wade Harrell, Kris Metzger, Aaron Pearse, and Mary Harner 112
ON NEST SUCCESS IN A REINTRODUCED POPULATION OF WHOOPING CRANES .Jeb Barzen, Sarah Converse, Peter Adler, Elmer Gray, Anne Lacy, Eva Szyszkoski, and Andrew Gossens 113
DETERMINING DIET COMPOSITION AND INGESTION RATE OF CRANES …
Proceedings Of The Thirteenth North American Crane Workshop, 14–17 April 2014, Lafayette, Louisiana, Usa, David A. Aborn, Richard P. Urbanek
Proceedings Of The Thirteenth North American Crane Workshop, 14–17 April 2014, Lafayette, Louisiana, Usa, David A. Aborn, Richard P. Urbanek
Proceedings of the North American Crane Workshop
RESEARCH PAPERS
HABITAT SELECTION BY BREEDING SANDHILL CRANES IN CENTRAL WISCONSIN. Tamara P. Miller and Jeb A. Barzen 1
HIGH NEST DENSITY OF SANDHILL CRANES IN CENTRAL WISCONSIN.Jeb A. Barzen, Liying Su, Anne E. Lacy, Andrew P. Gossens, and Dorn M. Moore 13
DIFFERENTIAL DETECTION OF TERRITORIAL AND NON-TERRITORIAL GREATER SANDHILL CRANES IN SUMMER. Lindsey F. McKinney, Jeb A. Barzen, Jason D. Riddle, Shelli A. Dubay, and Tim F. Ginnett 25
TIMING OF FAMILY DISSOCIATION DOES NOT AFFECT LONG-TERM SURVIVAL ESTIMATES OF SANDHILL CRANE CHICKS Matthew A. Hayes and Jeb A. Barzen 33
A REVIEW OF FALL SANDHILL CRANE MIGRATION …
Nesting Activity Budgets And Antipredator Behaviors Of Mississippi Sandhill Cranes, Jerome J. Howard, Rose Butler Wall, Lauren Billodeaux Mowbray, Scott G. Hereford
Nesting Activity Budgets And Antipredator Behaviors Of Mississippi Sandhill Cranes, Jerome J. Howard, Rose Butler Wall, Lauren Billodeaux Mowbray, Scott G. Hereford
Proceedings of the North American Crane Workshop
We studied activity budgets and antipredator behaviors of Mississippi sandhill cranes (Grus canadensis pulla) to determine if parental behavior influenced nest outcomes. We used infrared motion-activated cameras to capture behavioral sequences from 21 nests over a 2-year period. Overall activity budgets were similar among crane pairs regardless of nest outcome. Specific activity patterns did predict nest outcomes; pairs at unsuccessful nests spent more time away from the nest and more time manipulating nest contents than successful pairs, while pairs at nests that were lost to predation cooperated poorly and started the nest a month later on average than …
Migratory Bird Program At The U.S. Geological Survey Patuxent Wildlife Research Center/U.S. Fish And Wildlife Service Patuxent Research Refuge: Transformations In Management And Research, R. Michael Erwin, Robert Blohm
Migratory Bird Program At The U.S. Geological Survey Patuxent Wildlife Research Center/U.S. Fish And Wildlife Service Patuxent Research Refuge: Transformations In Management And Research, R. Michael Erwin, Robert Blohm
United States Geological Survey: Publications
The Patuxent Wildlife Research Center (Patuxent), first known as the Patuxent Research Refuge, has a long and rich history of participation in the Department of Interior’s (DOI) cooperative efforts to protect and conserve migratory birds in North America. This chapter describes many of the events and the people involved that constitute this important timeline for international conservation of a shared wildlife resource. The Patuxent Research Refuge, renowned worldwide, is part of the National Wildlife Refuge System of the U.S. Fish and Wildlife Service (USFWS) that has, at different times and under a variety of organizational iterations, provided the physical location …
An Update Of The Family-Level Taxonomy Of Vascular Plants In Mongolia, M. Urgamal, Ch. Sanchir
An Update Of The Family-Level Taxonomy Of Vascular Plants In Mongolia, M. Urgamal, Ch. Sanchir
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
A new comprehensive checklist of Mongolian vascular plant families includes descriptions of all accepted plant families, each with a basionym, homonym, and full list of synonyms. The list is a completely revised update of GUBANOV’s conspectus (1996) of the Mongolian flora. The currently list covers a total of 3,113 species, subspecies and 683 genera, 112 families of vascular plants, belonging to 39 orders, 14 classes or clades and 5 divisions of the vascular plants in the flora of Mongolia.
Historische Und Aktuelle Daten Zum Wolf In Der Mongolei, D. Eregdenedagva, Ravčigijn Samjaa, Michael Stubbe, Annegret Stubbe
Historische Und Aktuelle Daten Zum Wolf In Der Mongolei, D. Eregdenedagva, Ravčigijn Samjaa, Michael Stubbe, Annegret Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Zusammenfassung Die Mongolei beherbergt trotz intensiver Verfolgung einen der besten Wolfsbestände Eurasiens. Der Wolf kommt als wertvoller Großsäuger in allen Vegetationszonen der Mongolei vor. Bereits zahlreiche Steinzeichnungen künden von Mensch-, Haus- und Wildtierkonflikten mit dem wehrhaften Beutegreifer Wolf. Er ist und bleibt ein Konkurrent des Nomaden und andererseits ein wertvoller Pelzlieferant und Regulator in den Nahrungsnetzen. Die geringe menschliche Besiedlung und die in freier Weidewirtschaft gehaltenen Haustiere sowie eine reiche Fauna an kleinen und großen Wildsäugetieren bereiten der Wolfspopulation optimale nahrungsökologische Bedingungen. Seit geraumer Zeit hat die Haustierhaltung die 50 Millionengrenze überschritten. Der ökonomische Schaden des Wolfes in der Viehwirtschaft …
Survival Of Walleye Eggs In Upper Red Lake And The Tamarac River, Phillip Oswald
Survival Of Walleye Eggs In Upper Red Lake And The Tamarac River, Phillip Oswald
Journal of Earth and Life Science
Walleyes experience spawning runs each spring in the Tamarac River, a tributary of the Red Lakes. However, data about walleye egg survival in the lake and river is lacking. Mesh cages were placed in both the Tamarac River and Upper Red Lake to compare survival rates. A total of twenty cages were set, ten in the river and ten in the lake. Each cage contained one hundred fertilized eggs which were checked every third day to measure survival. Temperature (°C), dissolved oxygen (mg/L), and pH were measured at each cage location. The river had an average survival rate of 22% …
Invasive Species In An Urban Flora: History And Current Status In Indianapolis, Indiana, Rebecca W. Dolan
Invasive Species In An Urban Flora: History And Current Status In Indianapolis, Indiana, Rebecca W. Dolan
Scholarship and Professional Work - LAS
Invasive plant species are widely appreciated to cause significant ecologic and economic damage in agricultural fields and in natural areas. The presence and impact of invasives in cities is less well documented. This paper characterizes invasive plants in Indianapolis, Indiana. Based on historical records and contemporary accounts, 69 of the 120 species on the official Indiana state list are reported for the city. Most of these plants are native to Asia or Eurasia, with escape from cultivation as the most common mode of introduction. Most have been in the flora of Indianapolis for some time. Eighty percent of Indianapolis’ invasive …
Zebra Mussel (Dreissena Polymorpha) Affects The Feeding Ecology Of Early Stage Striped Bass (Morone Saxatilis) In The Hudson River Estuary, Michael G. Smircich, David L. Strayer, Eric T. Schultz
Zebra Mussel (Dreissena Polymorpha) Affects The Feeding Ecology Of Early Stage Striped Bass (Morone Saxatilis) In The Hudson River Estuary, Michael G. Smircich, David L. Strayer, Eric T. Schultz
EEB Articles
Variability in the feeding ecology of young fishes over short and long time scales in estuaries is likely to affect population dynamics. We studied 14 years of early stage Striped Bass feeding ecology in the Hudson River Estuary over a 25-year time span, including years in which invasive zebra mussels markedly altered energy flow within the estuary. We predicted that feeding success would be low and that diet composition would be altered during years of high zebra mussel impact, particularly in upriver locations where mussels occur. Feeding success in the short term was indicated by volume of gut contents and …
Bibliographia Phytosociologica Et Floristica Mongolia: Pars Iv, Werner Hilbig
Bibliographia Phytosociologica Et Floristica Mongolia: Pars Iv, Werner Hilbig
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
In Ergänzung zu den bisherigen drei Teilen der Bibliographie vegetationskundlicher, vegetationsökologischer, floristischer und pflanzengeographischer Arbeiten über die Mongolei wird in dieser Arbeit Teil IV der Bibliographie vorgelegt. Er umfasst im Wesentlichen den Zeitraum 2007 bis 2014. Auch Publikationen zur Vegetationsgeschichte und zum botanischen Naturschutz werden berücksichtigt.
English summary:
In addition to the hitherto existing three parts of the bibliography of geobotanical, ecological, floristic and plant-geographical papers on Mongolia the part IV of the bibliography is given. It comprises in the main point the period from 2007 until 2014. In addition, publications on vegetation history and botanical nature protection are considered.
A Lobed Argiope Spider On Its Most Eastern Distribution – First Record Of Argiope Lobata (Pallas, 1772) For The Sub-Family Argiopinae (Arachnida: Araneidae) In Mongolia, Oliver Lindecke, Marcus Wall
A Lobed Argiope Spider On Its Most Eastern Distribution – First Record Of Argiope Lobata (Pallas, 1772) For The Sub-Family Argiopinae (Arachnida: Araneidae) In Mongolia, Oliver Lindecke, Marcus Wall
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
The subfamily Argiopinae SIMON, 1890 is reported for Mongolia the first time by Argiope lobata (PALLAS, 1772). Furthermore, we herein highlight the most eastern distribution of this species, which is widespread in the Mediterranean, African and in some Asian countries. The obtained specimen was found in the Eastern Gobi, a landscape of semi-desert character. Despite numerous studies with arachnological background in the past, even larger species new for Mongolia could be found. Findings like this show the on-going need for basic biodiversity research in the Gobi ecoregions. We further discuss previous, but doubtful reports of A. lobata in South-east Asia …
Acclimatization Of Coregonus Autumnalis Migratorius (Georgi, 1775) In Some Water Bodies Of The Mongolian Gobi, Auyriin Dulmaa
Acclimatization Of Coregonus Autumnalis Migratorius (Georgi, 1775) In Some Water Bodies Of The Mongolian Gobi, Auyriin Dulmaa
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Introductions and subsequent acclimatization of the fish Baicalian omul (Coregonus autumnalis migratorius natio possolskii) was carried out in 1980, 1982, and 1986 in the previously fishless lakes of Ulaagchnii Khar, Baga, and Jaahan located in the territory of Gobi region of the Zavhan administrative aimag of Mongolia. Three million larvae of Coregonus autumnalis migratorius natio possolskii were received from the Bolshrechnsky fishery in Buryatya, Russia (DULMAA 1999). The density of distribution was 10-15 thousand units per hectare with an average larvae mass of 0.05 g. The relatively abundant fodder base has facilitated the high rate of growth and …
Plant Communities In Eastern Mongolia, Werner Hilbig, Naidan Narantuya
Plant Communities In Eastern Mongolia, Werner Hilbig, Naidan Narantuya
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
In this contribution is presented a phytosociological description of plant communities, recorded in the phytogeographical district of Eastern Mongolia, including parts of the Dornod (Eastern) and the Choybalsan aymags. The whole district is characterized by steppe vegetation. Other vegetation types, like elm (Ulmus pumila) bush vegetation, shrubbery on sandy and rocky sites, Salix miyabeana bushes, meadow and reed vegetation in the river plains and lake basins, salt vegetation and ruderal plant communities were also recorded, documented by synoptic vegetation tables or single relevés and characterized by information on the ecological conditions of their habitats. Some of the observed …
Current Status And Conservation Of Mountain Ungulates In Mongolia, Badamjav Lkhagvasuren, Yansanjav Adiya, Garam Tsogtjargal, Garam Amgalanbaatar, Rich Harris
Current Status And Conservation Of Mountain Ungulates In Mongolia, Badamjav Lkhagvasuren, Yansanjav Adiya, Garam Tsogtjargal, Garam Amgalanbaatar, Rich Harris
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
In November 2009, we conducted a countrywide survey for wild sheep or argali and Siberian ibex. Field survey teams sampled in total 134 argali distribution units within Mongolia, which are estimated to occupy approximately 46,603 km² of the whole area of 60,237 km² that been previously mapped as populated by argali. They observed 385 groups of argali, totaling 3.373 individuals. Our point estimate of argali is 18,140 with a lower 95% confidence limit of 9,193 and an upper 95% confidence limit of 43,135.
At the same time the authors observed 162 groups of ibex, totaling 2,541 individuals and our point …
Influence Of Fine Sediment On Arctic Grayling (Thymallus Arcticus) Egg Survival And Spawning Habitat Suitability, Ian R. Anderson
Influence Of Fine Sediment On Arctic Grayling (Thymallus Arcticus) Egg Survival And Spawning Habitat Suitability, Ian R. Anderson
Undergraduate Theses, Professional Papers, and Capstone Artifacts
The Arctic grayling (Thymallus arcticus) is a freshwater salmonid that is found in clear, cold waters throughout the northern regions of North America. Arctic grayling are still widespread in Alaska and Canada but have declined substantially in their two historic, disjunct southern populations in the contiguous United States. One of these populations was found in the AuSable River in Michigan and went extinct in the mid-1900s (Vincent 1962) while the other, found in the Upper Missouri River drainage in Montana, now inhabits a small portion of its historical range (Nelson 1954). Currently, only two native populations of Arctic …
A Single Strand Of Argument With Unfounded Conclusion, Robert W. Elwood
A Single Strand Of Argument With Unfounded Conclusion, Robert W. Elwood
Animal Sentience
Key (2016) describes the neural system involved in human pain experience in an excellent fashion but then suggests that only that complete system can generate the experience of pain. Thus animals without all components will not feel pain. This argument has been refuted in the past by analogy to vision where it is clear that a broad range of taxa, vertebrate and invertebrate, have good visual abilities albeit with completely different central nervous systems and receptors. This known counterargument to Key’s main idea is not mentioned in the target article. Further criteria that might indicate pain and studies examining these …
Water-Quality Effects On Phytoplankton Species And Density And Trophic State Indices At Big Base And Little Base Lakes, Little Rock Air Force Base, Arkansas, June Through August, 2015, L. J. Driver, B. G. Justus
Water-Quality Effects On Phytoplankton Species And Density And Trophic State Indices At Big Base And Little Base Lakes, Little Rock Air Force Base, Arkansas, June Through August, 2015, L. J. Driver, B. G. Justus
Journal of the Arkansas Academy of Science
Big Base and Little Base Lakes are located on Little Rock Air Force Base, Arkansas, and their close proximity to a dense residential population and an active military/aircraft installation make the lakes vulnerable to water-quality degradation. The U.S. Geological Survey (USGS) conducted a study from June through August 2015 to investigate the effects of water quality on phytoplankton species and density and trophic state in Big Base and Little Base Lakes, with particular regard to nutrient concentrations. Nutrient concentrations, trophic-state indices, and the large part of the phytoplankton biovolume composed of cyanobacteria, indicate eutrophic conditions were prevalent for Big Base …
The Effect Of Cyanobacterium Gloeotrichia Echinulata In The Belgrade Lakes, Maine, Harriet T. Rothschild
The Effect Of Cyanobacterium Gloeotrichia Echinulata In The Belgrade Lakes, Maine, Harriet T. Rothschild
Honors Theses
Gloeotrichia echinulata is a cyanobacteria species that has been increasingly forming blooms in oligotrophic lakes in the Northeastern United States. The Belgrade Lakes in central Maine have experienced increasing blooms over the past decades. Long Pond and Great Pond in the Belgrade Lakes region are popular locations for summer tourism and year-round residents. Research into G. echinulata is important to the Belgrade community because of potential effects to water quality, public health, and recreation. Studying G. echinulata bloom density throughout the summer and how it may affect the phosphorous cycle, the nitrogen cycle, and the plankton community will help scientists …