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Articles 91 - 120 of 382
Full-Text Articles in Other Animal Sciences
Offspring Survival In The Demoiselle Crane Grus Virgo In Mongolia, Ueli Rehsteiner
Offspring Survival In The Demoiselle Crane Grus Virgo In Mongolia, Ueli Rehsteiner
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
The breeding performance of nine breeding pairs of the Demoiselle crane Grus virgo has been investigated in Takhin Tal, Mongolia, in order to get information about their breeding density as well as the survival rate of the juveniles. To this end, the nests and the offspring have been monitored from hatching up to the age of about two months in order to get information about their survival rate. All pairs settled within a distance of about 2 km to the only river in the area, resulting in a density of about 0.6 couples per km. The number of surviving juveniles …
Investigation Of Bats In The Darkhad Wetlands, Jargalsaikhan Ariunbold
Investigation Of Bats In The Darkhad Wetlands, Jargalsaikhan Ariunbold
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
The Darkhadyn Khotgor wetlands are located in the northern part of Mongolia and are transected by both small and large rivers such as the Shishged and the Tengis. Many small lakes are present and the large lake ‘Tsagaan nuur’ (English: White lake) is upstream of the Yenisei river. It is a land rich in biodiversity with pristine waters and an extreme continental climate. The Darkhadyn Khotgor wetlands are composed of three ecological zones, Siberian Taiga, forested steppe, and meadow valley. The area is surrounded by Ulaan Taiga strictly protected area (SPA) in the western part, Khoridol Saridag Mountains SPA in …
Erster Brutnachweis Für Den Bienenfresser (Merops Apiaster L., 1758) In Der Mongolei = First Breeding Record For The Bee-Eater (Merops Apiaster L., 1758) In Mongolia, Michael Stubbe, Davaa Lkhagvasuren, L. Kratzsch, H.-J. Döhle, Annegret Stubbe
Erster Brutnachweis Für Den Bienenfresser (Merops Apiaster L., 1758) In Der Mongolei = First Breeding Record For The Bee-Eater (Merops Apiaster L., 1758) In Mongolia, Michael Stubbe, Davaa Lkhagvasuren, L. Kratzsch, H.-J. Döhle, Annegret Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
First breeding record of Merops apiaster was observed for Mongolia in August 2014. Breeding locality was a little oasis eastern of Šarga-Sum in the Šargyn-gobi, Aimak Gobi-Altai, about 600 km eastern, far from the known area of the species in northwest China.
New Data On Feeding Ecology Of Bubo Bubo And Asio Otus (Aves: Strigidae) In Mongolia, Michael Stubbe, Nayamsuren Batsaikhan, Oliver Lindecke, Ravčigijn Samjaa, Annegret Stubbe
New Data On Feeding Ecology Of Bubo Bubo And Asio Otus (Aves: Strigidae) In Mongolia, Michael Stubbe, Nayamsuren Batsaikhan, Oliver Lindecke, Ravčigijn Samjaa, Annegret Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
New materials of 10 Eagle owl Bubo bubo localities from Mongolia were analyzed. The feeding ecology of Long-eared owl Asio otus was studied by the investigation of pellets from 4 roosting or nesting places in S-Mongolia. All together in the prey of Bubo bubo were analyzed 1098 vertebrates (1017 mammals, 39 birds, 41 reptiles, 1 fish), involving about 22 mammal species. The pellets were dominantly those of Lagomorpha with 23.3% in SW-Mongolia, Dipodidae in W-, SW- and S-Mongolia (37.3%, 23.4%, 30.2%), Cricetidae in SW- and S-Mongolia (13.6%, 17.6%), Gerbillidae in W- and S-Mongolia (19%, 32.1%) and Arvicolidae in W- and …
A Revised Checklist Of Mongolian Mammal Species, V. S. Lebedev, A. A. Bannikova, Ya. Adiya, S. Shar, A. V. Surov
A Revised Checklist Of Mongolian Mammal Species, V. S. Lebedev, A. A. Bannikova, Ya. Adiya, S. Shar, A. V. Surov
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
A revised annotated checklist of Mongolian mammals is presented, supplemented with comments on modifications in species- and genus-level taxonomy introduced over the last 30 years. The checklist includes 140 species compared to 124 species recognized three decades ago by SOKOLOV & ORLOV (1980). Since then, four species were newly described; seven species were registered for the first time on Mongolian territory. Names for more than 20 taxa have changed, on most occasions this change occurred not for purely nomenclatural reasons but rather as a result of taxonomic revisions at the species level which have elevated the rank of many nominal …
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 …
Materials On Heteroptera Of Uvs-Nuur Depression (Russia, Tuva), S. V. Kuzhuget
Materials On Heteroptera Of Uvs-Nuur Depression (Russia, Tuva), S. V. Kuzhuget
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
In this article are reported new data about spreading of 43 species of heteropterans of 10 families of the Tuvinian Uvs-Nuur depression.
Zur Erinnerung An Den Mongolischen Säugetierforscher Namshil Chotolchuu (1935-1990) – Im Gedenken An Die Wiederkehr Seines 80. Geburtstages 2015, Michael Stubbe
Zur Erinnerung An Den Mongolischen Säugetierforscher Namshil Chotolchuu (1935-1990) – Im Gedenken An Die Wiederkehr Seines 80. Geburtstages 2015, Michael Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Namshil Chotolchuu wurde am 20.01.1935 in Ulaanbaatar geboren. Sein Vater war in den 60er und 70er Jahren ein bekannter Schachmeister der Mongolei. Mit Chotolchuu verbinden uns sehr erfolgreiche und prägende gemeinsame Mongolisch-Deutsche Biologische Expeditionen und daraus resultierende Publikationen sowie eine lange Freundschaft.
Mit diesem Nachruf wollen wir an ein langes Kapitel der deutsch-mongolischen Zusammenarbeit mit Kollegen der Mongolischen Akademie der Wissenschaften und an einen Pionier der eigenständigen mongolischen Säugetierforschung erinnern, der in der internationalen Kooperation, im Team der Mongolisch-Deutschen Biologischen Expeditionen und im Schrifttum sowie ganz persönlich unvergessen bleibt.
Vorläufige Checkliste Der Laufkäfer (Coleoptera: Carabidae) Der Mongolei 3. Beitrag Zur Carabidenfauna Der Mongolei, Peer Schnitter
Vorläufige Checkliste Der Laufkäfer (Coleoptera: Carabidae) Der Mongolei 3. Beitrag Zur Carabidenfauna Der Mongolei, Peer Schnitter
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Four hundred fifty-one species and subspecies of ground beetles were reported for Mongolia. Twenty-nine species are new for the fauna: Calosoma sycophanta (LINNAEUS, 1758), Carabus (Coptolabrus) schrencki MOTSCHULSKY, 1860 ? ssp., Elaphrus (Elaphroterus) punctatus MOTSCHULSKY, 1844, Dyschiriodes marani KULT, 1949, Dyschiriodes pusillus (DEJEAN, 1815), Broscus ? semistriatus DEJEAN, 1828, Bembidion (Asioperyphus) pamiricola LUTSHNIK, 1930, Bembidion (Asioperyphus) pseudoinfuscatum REBL i. litt, Bembidion (Hirmoplataphus) hirmocaelum CHAUDOIR, 1850, Bembidion (Peryphodes) amurense (MOTSCHULSKY, 1859), Bembidion (Peryphus) insidiosum holdhausi FASSATI, 1952, Bembidion (Peryphus) petrosum GEBLER, 1833, Bembidion (Plataphus …
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 …
Conflicts Between Human And Wildlife In Baytik Mountain, China, Wenxuan Xu, Weikang Yang, Canjun Xia, Xingyi Gao
Conflicts Between Human And Wildlife In Baytik Mountain, China, Wenxuan Xu, Weikang Yang, Canjun Xia, Xingyi Gao
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Baytik Mountain was a traditional pasture used by nomads, divided into summer pasture, winter pasture and transitional pasture, and most of their livestock were goat and sheep. Many rare and endangered animals occur in this region, including snow leopard, lynx, Mongolian wild ass, ibex and argali. There have long history of conflicts between human and wildlife. Minority nationalities (Uighur, Kazakh, and Mongols, etc.) in China do not have a one child policy. As a result, many families have become quite large because of improvements in living standards, medical care, and living conditions. In addition, these living conditions force the local …
Identification Of Taenia Metacestodes From Mongolian Mammals Using Multivariate Morphometrics Of The Rostellar Hooks, Danielle M. Tufts, Nyamsuren Batsaikhan, Michael Pitner, Gábor R. Rácz, Altangerel Tsogtsaikhan Dursahinhan, Scott Lyell Gardner
Identification Of Taenia Metacestodes From Mongolian Mammals Using Multivariate Morphometrics Of The Rostellar Hooks, Danielle M. Tufts, Nyamsuren Batsaikhan, Michael Pitner, Gábor R. Rácz, Altangerel Tsogtsaikhan Dursahinhan, Scott Lyell Gardner
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Parasite diversity in and among various species of mammals within Mongolia is still poorly understood. The current paper focusses on a small part of the results of the Mongolian Vertebrate Parasite Project (MVPP), which entailed a broad-scale biodiversity survey of the vertebrates and their parasites of the Gobi and Altai regions of Mongolia. We report on the prevalence and morphological variation of larval cestodes of the family Taeniidae that occurred in small mammals that were collected from 2009-2012 from various locations in southern Mongolia. From these metacestodes, we studied both large and small rostellar hooks and analyzed both size and …
Polyzonus Fasciatus (Fabricius, 1781) (Coleoptera: Cerambycidae) - Ein Artporträt, Volker Neumann, Davaa Lkhagvasuren
Polyzonus Fasciatus (Fabricius, 1781) (Coleoptera: Cerambycidae) - Ein Artporträt, Volker Neumann, Davaa Lkhagvasuren
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
This paper focuses on the distribution of Polyzonus fasciatus (Coleoptera, Cerambycidae) in Mongolia and describes biological aspects of its development.
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 …
Register Of Chironomids (Diptera, Chironomidae) Of The Lake Khubsugul In Mongolia, E. A. Erbaeva, G. P. Safronov
Register Of Chironomids (Diptera, Chironomidae) Of The Lake Khubsugul In Mongolia, E. A. Erbaeva, G. P. Safronov
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
This list presents 107 species and forms of Chironomidae larvae from the lake Khubsugul, which belonging to 5 subfamilies of Chironomidae: Tanypodinae (11 species), Diamesinae (7), Prodiamesinae (1), Orthocladiinae (48), Chironomiinae (40).
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 …
New Data On Small Mammals Of Neolithic Sites And Burial Grounds In Mongolia, Fedora Khenzykhenova, Nataly Schepina, Dashzeveg Tumen, Myagmar Erdene, Nataly Tsydenova, D. Khatanbaatar
New Data On Small Mammals Of Neolithic Sites And Burial Grounds In Mongolia, Fedora Khenzykhenova, Nataly Schepina, Dashzeveg Tumen, Myagmar Erdene, Nataly Tsydenova, D. Khatanbaatar
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
New data about animals obtained by Mongolian paleoanthropologists, National University of Mongolia and Russian archaeologist, Institute of Mongolian, Buddist and Tibetan studies, Siberian Branch, Russian Academy of Sciences were obtained under the direction of Professors Dashzeveg Tumen and Myagmar Erdene. The faunistic materials were excavated from localities of different origins including burial grounds, old cities, and Neolithic sites in different areas of Mongolia. Species composition of the large mammal fauna included two species and, the small mammal fauna was represented by two species of lagomorphs, and six species of rodents which are also components of the recent fauna of Mongolia.
How Could Unmanned Aerial Systems (Uas) Be Used For Ecohydrological And Ecosystem Research? Experiences Of First Operations With Uas In River Flood Plains Of Northern Mongolia, Jürgen Hofmann, Martin Oczipka, Thomas Rutz, Hauke Dämpfling
How Could Unmanned Aerial Systems (Uas) Be Used For Ecohydrological And Ecosystem Research? Experiences Of First Operations With Uas In River Flood Plains Of Northern Mongolia, Jürgen Hofmann, Martin Oczipka, Thomas Rutz, Hauke Dämpfling
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
This paper proposes the use of unmanned aerial systems (UAS) as a method for monitoring biotic resources and ecohydrological systems in river floodplains.
Small scale mapping based on LANDSAT and SRTM or ASTER data is of limited applicability since a spatial resolution of 30 to 90 m is not sufficient to meet the demands of habitat mapping and large scale 3D -modelling. Newer satellites like WorldView2 and SENTINEL (space mission from European Space Agency within the Copernicus Programme) could be an option to gain a 0.5 m resolution, but the availability of image data is limited.
UAS allow the collection …
Der Mönchsgeier Aegypius Monachus (L., 1766) Und Seine Mallophagen (Insecta, Phthiraptera) In Der Mongolei = Cinereous Vulture Aegypius Monachus (L., 1766) And Its Chewing Lice (Insecta, Phthiraptera) In Mongolia, Eberhard Mey, Michael Stubbe, Davaa Lchagvasuren, Annegret Stubbe
Der Mönchsgeier Aegypius Monachus (L., 1766) Und Seine Mallophagen (Insecta, Phthiraptera) In Der Mongolei = Cinereous Vulture Aegypius Monachus (L., 1766) And Its Chewing Lice (Insecta, Phthiraptera) In Mongolia, Eberhard Mey, Michael Stubbe, Davaa Lchagvasuren, Annegret Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
During a series of studies on the population, ecology, and biology of the Cinereous Vulture in Mongolia, fully feathered nestlings of the species from 9 nests were examined, without the use of chemical methods, for Mallophaga infestation from 2010 to 2015. The collection resulted in several first records for Mongolia of three species: Laemobothrion vulturis (J. C. FABRICIUS, 1775) sensu lato (Amblycera, Laemobothriidae), Neocolpocephalum aegypii (TENDEIRO, 1989) (Amblycera, Menoponidae s. l.) sp. inq., and Falcolipeurus quadripustulatus (BURMEISTER, 1838) (Ischnocera, Philopteridae s. l.). Despite being expected, there has still been no record of Agypoecus brevicollis (BURMEISTER, 1838) in Mongolia.
Chewing louse …
Key To The Bat Fleas Of Mongolia, Ingo Scheffler
Key To The Bat Fleas Of Mongolia, Ingo Scheffler
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Fleas of the family Ischnopsyllidae belong to the common bat ectoparasites. The current taxonomic status of these insects in Mongolia includes seven species for which we provide a determination key.
Bat Ectoparasites Of Mongolia, Part 3, Ingo Scheffler, Ariunbold Jargalsaikhan, Idertsogt Bolorchimeg, Annegret Stubbe, Michael Stubbe, Andreas Abraham, K. Thiele
Bat Ectoparasites Of Mongolia, Part 3, Ingo Scheffler, Ariunbold Jargalsaikhan, Idertsogt Bolorchimeg, Annegret Stubbe, Michael Stubbe, Andreas Abraham, K. Thiele
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
The fauna of Mongolian bats and their ectoparasites is not yet fully documented. This study analyzes ectoparasite samples of 15 bat species from diverse taiga, steppe, and desert locations. We recorded 27 parasite species in total and report their abundance, host preference, and occurrence herein. In describing a new bat fly species (Basilia dolchii n. spec.), reporting six parasite species never before recorded in Mongolia, and examining rare host species such as Myotis frater and Murina hilgendorfi, this work expands present knowledge in this research area. To assess respective individual and species-specific parasite loads comprised of different insects …
Assessing The Effects Of Prescribed Fire On Foraging Bats At Mammoth Cave National Park After The Arrival Of White-Nose Syndrome, Rachael Elizabeth Griffitts
Assessing The Effects Of Prescribed Fire On Foraging Bats At Mammoth Cave National Park After The Arrival Of White-Nose Syndrome, Rachael Elizabeth Griffitts
Online Theses and Dissertations
Habitat use of bats may shift following population level impacts of White-nose Syndrome (WNS). Multiple bat species have experienced unprecedented population declines due to WNS, including federally listed Myotis sodalis (Indiana bat) and Myotis septentrionalis (northern long-eared bat). Specifically, the effect of WNS across forest landscapes is unclear in relation to prescribed fire. Mammoth Cave National Park (MACA) has employed a prescribed fire regime since 2002 and WNS was detected on MACA in 2013. Bat activity was monitored across burned and unburned sites at MACA before (2010-2012) and after the detection of WNS (2013-2016) using transects of acoustic detectors (Anabat …
Development And Evaluation Of A Habitat Suitability Model For White-Tailed Deer In An Agricultural Landscape, Eric Anstedt
Development And Evaluation Of A Habitat Suitability Model For White-Tailed Deer In An Agricultural Landscape, Eric Anstedt
All Graduate Theses, Dissertations, and Other Capstone Projects
White-tailed deer (Odocoileus virginianus) are an ecological, economical, and socially significant species that occupy a variety of ecoregions. White-tailed deer are mobile habitat generalists that prefer habitats containing woody cover. Deer have successfully adapted to habitat-fragmented, agricultural landscapes. As a result, deer are not uniformly distributed across intensively cultivated areas, which make field surveys difficult with often highly variable spatial data. To increase sampling efficiency (deer observed / sampling effort), the landscape can be stratified based upon preferred habitat types. Habitat suitability models (HSI) have been used to represent hypothesized wildlife-habitat relationships, and therefore the likelihood of deer being observed …
A Life Cycle Analysis Of Land Use In Us Pork Production, Greg Thoma, Marty Matlock, Ben Putman, Jasmina Burek
A Life Cycle Analysis Of Land Use In Us Pork Production, Greg Thoma, Marty Matlock, Ben Putman, Jasmina Burek
Food Systems
The goal of this study was to analyze land use in the production of US pork using Life Cycle Assessment (LCA). LCA is a comprehensive methodology for quantitatively analyzing potential environmental impacts associated with complex systems. Identification of processes contributing to high environmental impacts often highlights opportunities for gains in efficiency, which can increase the profitability and sustainability of US pork. The environmental impact category analyzed in this assessment was land use. After reviewing existing information regarding land use in agriculture and livestock production, analysis for US pork production was performed at two scales: cradle-to-grave and cradle-to-farm gate. The cradle-to-grave …
Life Cycle Assessment Of Alternative Swine Management Practices, Prathamesh Avadhut Bandekar
Life Cycle Assessment Of Alternative Swine Management Practices, Prathamesh Avadhut Bandekar
Graduate Theses and Dissertations
Life Cycle Assessments (LCAs) are quantitative analyses of complex systems for evaluation of impacts and risk associated with management decisions. LCAs can be effective tools for determining comparative advantages of management strategies across specific impact concern. In this study, life cycle assessments of pork production management alternatives was performed. The alternative management practices included in this study were production of entire males (boars), use of pens for gestation housing, immunocastration, production without growth promoting antimicrobials, production without growth promoting and preventive antimicrobials, and production without ractopamine. These LCAs evaluated the impact of each management strategy on greenhouse gas emission (GHG), …
A Cradle To Farm Gate Life Cycle Analysis Of Land Use In U.S. Pork Production, William Benjamin Putman
A Cradle To Farm Gate Life Cycle Analysis Of Land Use In U.S. Pork Production, William Benjamin Putman
Graduate Theses and Dissertations
The goal of this study was to conduct a detailed Life Cycle Assessment (LCA) of the U.S. live swine production supply chain to quantify land use requirements and to assess the impact associated with various ration compositions. The functional unit was defined as one kilogram (2.2 pounds) of live swine at the farm gate, ready for transport to the abattoir. This assessment focused on the three highest producing USDA regions, which encompassed the Midwest (Regions 5 and 7) and the Southeast (Region 4), representing 86% of U.S. market hog production.
First, a literature review was conducted to summarize the most …
The Energetic Value Of Land-Based Foods In Western Hudson Bayand Their Potential To Alleviate Energy Deficits Of Starving Adult Male Polar Bears, Linda J. Gormezano, Robert F. Rockwell
The Energetic Value Of Land-Based Foods In Western Hudson Bayand Their Potential To Alleviate Energy Deficits Of Starving Adult Male Polar Bears, Linda J. Gormezano, Robert F. Rockwell
Publications and Research
Climate change is predicted to expand the ice-free season in western Hudson Bay and when it grows to 180 days, 28–48% of adult male polar bears are projected to starve unless nutritional deficits can be offset by foods consumed on land. We updated a dynamic energy budget model developed by Molnar et al. to allow influx of additional energy from novel terrestrial foods (lesser snow geese, eggs, caribou) that polar bears currently consume as part of a mixed diet while on land. We calculated the units of each prey, alone and in combination, needed to alleviate these lethal energy deficits …
Differences In The Diversity Of Frogspecies Between Sierra Lloronaand El Valle, Panama, Kei Okabe Thurber
Differences In The Diversity Of Frogspecies Between Sierra Lloronaand El Valle, Panama, Kei Okabe Thurber
Independent Study Project (ISP) Collection
Panama is home to the greatest diversity of species in all of Central America. It is home to 174 species of frogs, 35 of which are endemic to Panama. Frogs are a vital part of many ecosystems. They maintain insect populations and act as food sources for larger predators. Their job of maintaining insect populations is essential to curbing the spread of diseases. Additionally, scientists have found chemical compounds in the skin of frogs that can be used to treat pain and prevent infections. The main threat to the majority of frogs is the deadly fungus Batrachochytrium dendrobatidis (Bd), or …
Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell
Harvest Incentives: A Tool For Managing Aquatic Invasive Species, Bob Wiltshire, Nathan Stone, Marshall Meyers, Bill Hyatt, Lori Williams, Jason Goldberg, Susan Pasko, Leah Elwell
National Invasive Species Council
Conclusion
The success of any harvest incentive program to address aquatic invasive species will depend upon numerous biological, socioeconomic, and legal considerations. Programs that encourage harvest may be a successful management tool in targeting small, distinct populations; in high priority areas within a larger invasion; or they may play a supplementary role within larger control programs. Their use, however, will require careful review, planning, and monitoring to ensure success and that they do not unintentionally lead to further spread of invasive species, cause additional harm to native species, or waste valuable resources.
Pronghorn (Antilocapra Americana) Offspring Recruitment On The Carrizo Plain National Monument: Evaluating The Effects Of Low Population Density And Marginal Habitat Quality., Diego Ramirez Johnson
Pronghorn (Antilocapra Americana) Offspring Recruitment On The Carrizo Plain National Monument: Evaluating The Effects Of Low Population Density And Marginal Habitat Quality., Diego Ramirez Johnson
UNLV Theses, Dissertations, Professional Papers, and Capstones
Demographic fluctuation among ungulate populations is strongly linked to variability in recruitment. Rates of recruitment are subject to various forms of density-dependent and density-independent regulation. For species which benefit from the presence of conspecifics, reduced population density can decrease rates of recruitment and trigger a decline in per capita growth. Termed the Allee effect, this scenario can cause demographic collapse and population extinction. For many ungulate species, predation on juveniles is reduced when the timing and distribution of births is synchronized within a local population. Because birth synchrony is density-dependent, it may act as a mechanism for the Allee effect …