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Articles 121 - 150 of 155

Full-Text Articles in Ecology and Evolutionary Biology

Study Of Environmental Variables And Connectivity Of Northern Mexico For Cranes: Conservation Implications, Edgar Gustavo López-Saut, Ricardo Rodriguez Estrella, Felipe Chavez-Ramirez Jan 2010

Study Of Environmental Variables And Connectivity Of Northern Mexico For Cranes: Conservation Implications, Edgar Gustavo López-Saut, Ricardo Rodriguez Estrella, Felipe Chavez-Ramirez

Proceedings of the North American Crane Workshop

Wetlands are one of the most important ecosystems for biodiversity and as a resource for humans. Humans depend on wetlands for water and food, but with expansion of urban cores, water overexploitation, and the increase of croplands, wetlands are at risk. The Chihuahuan desert is an ecoregion important for the economy and development of Mexico. Although there are many temporal wetlands that support many migratory birds, water in some desert landscapes is being overexploited due to development. This leads to the desiccation of wetlands important for migratory birds such as cranes. The cranes as a group are associated with grasslands …

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Preliminary Wintering Counts And New Locations Of Sandhill Cranes In Mexico, Ingrid Barceló, Edgar G. López, Felipe Chávez-Ramírez Jan 2010

Preliminary Wintering Counts And New Locations Of Sandhill Cranes In Mexico, Ingrid Barceló, Edgar G. López, Felipe Chávez-Ramírez

Proceedings of the North American Crane Workshop

Sandhill cranes (Grus canadensis) undertake a migration twice a year, when more than 400,000 cranes cross the United States from the Arctic of North America and Eastern Siberia to the southwest U.S. and north central Mexico. Although the sandhill crane has been studied intensely, few studies have been done on their Mexican wintering grounds. Little is known about what proportion of the sandhill crane population migrates to Mexico, and there is even less information regarding its dispersion. During winter 2007-2008 we surveyed 30 wetlands in the Chihuahuan Desert ecoregion in northern Mexico, recording presence/absence and number of sandhill …

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Brutareale Und Brutbiologie Der Greifvogelarten Der Mongolei = Grid Mapping And Breeding Ecology Of Raptors In Mongolia, Michael Stubbe, Annegret Stubbe, Nayamsuren Batsaikhan, Sundev Gombobaatar, T. Stenzel, H. Von Wehrden, Sh. Boldbaatar, B. Nayambayar, D. Sumjaa, Ravčigijn Samjaa, N. Ceveenmjadag, A. Bold Jan 2010

Brutareale Und Brutbiologie Der Greifvogelarten Der Mongolei = Grid Mapping And Breeding Ecology Of Raptors In Mongolia, Michael Stubbe, Annegret Stubbe, Nayamsuren Batsaikhan, Sundev Gombobaatar, T. Stenzel, H. Von Wehrden, Sh. Boldbaatar, B. Nayambayar, D. Sumjaa, Ravčigijn Samjaa, N. Ceveenmjadag, A. Bold

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

This work summarizes the longtime ecological research of the German-Mongolian scientific cooperation regarding biodiversity studies in Central Asia, focusing on native raptor species (Aves: Falconiformes). There is included a short overview on the history of raptor research in Mongolia. One of the primary goals was the creation of distribution maps of breeding records based on definitive time and space coordinates. Additional data on the breeding biology amend the distribution data. Currently 43 raptor species are recorded for Mongolia. Whenever possible were also incorporated data from adjacent regions of Mongolia (China, Tuva, Burjatia, Pribaikalia), in order to embed the avifauna of …

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Current State Of Ixodidae Research In Mongolia, Daniel Kiefer, K. Pfister, D. Tserennorov, G. Bolormaa, D. Otgonbaatar, Ravčigijn Samjaa, E. G. Burmeister, Mathias S. Kiefer Jan 2010

Current State Of Ixodidae Research In Mongolia, Daniel Kiefer, K. Pfister, D. Tserennorov, G. Bolormaa, D. Otgonbaatar, Ravčigijn Samjaa, E. G. Burmeister, Mathias S. Kiefer

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Our research presents the Ixodidae-fauna in Mongolia. The current taxonomic state in Mongolia shows 19 Ixodidae taxa extracted in 308 locations from 115 bird and mammal species. In 1980, the species Ixodes persulcatus SCHULZE, 1930 and Ixodes berlesei Birula, 1895 were detected in Inget Tolgoi and Ixodes laguri OLENEV, 1929 on Meriones unguiculatus 10 km southeast of Ulaanbaatar for the first time. In 2000 the species Haemaphysalis concinna Koch, 1844 was detected in the Selenge-river area and Argas (Argas) vulgaris FILIPPOVA, 1961 was detected in the Gobi area. From the collection of M. and A. STUBBE 1 N …

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Current Status Of Lesser Sandhill Cranes In Yakutia, Inga Bysykatova, Sergey Sleptsov, Nikolay Vasiliev Jan 2010

Current Status Of Lesser Sandhill Cranes In Yakutia, Inga Bysykatova, Sergey Sleptsov, Nikolay Vasiliev

Proceedings of the North American Crane Workshop

In Yakutia, the sandhill crane (Grus canadensis canadensis) was considered a common bird in 1957 on the Primorie tundra from the Kolyma River to the Alazeya River. In 1980 the area of the species’ supposed breeding grounds within the Kolyma- Indigirka interfluve comprised 34,600 km2. In 1984-85, the breeding grounds extended west to the Sundrun River, with the total area reaching 49,400 km2. At present, the westernmost sandhill crane range is on the tundra along the lower reaches of the Berelekh River. This region joins the higher density Siberian crane (G. leucogeranus) range, so that the …

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Wintering Sandhill Crane Distribution And Habitat Use Patterns At Bosque Del Apache National Wildlife Refuge, New Mexico, Tandi L. Perkins, Leigh H. Fredrickson Jan 2010

Wintering Sandhill Crane Distribution And Habitat Use Patterns At Bosque Del Apache National Wildlife Refuge, New Mexico, Tandi L. Perkins, Leigh H. Fredrickson

Proceedings of the North American Crane Workshop

The single most important factor regulating sandhill crane (Grus canadensis) populations is their ability to carry out annual life cycle events while responding to changing habitat availability and distribution across local, regional, and continental landscapes. Wetland and cropland resource availability and distribution across the landscape have become increasingly unpredictable. Recent changes in farming practices, urbanization, and prevailing drought conditions in New Mexico have transformed and reduced dynamic, heterogeneous landscapes into scattered fragments of the original setting. Concerns are increasing for the cumulative influence of these often irreversible actions in providing the type of resources needed by cranes at …

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Leptodactylus Savagei, W. R. Heyer, Miriam M. Heyer, Rafael O. De Sá Jan 2010

Leptodactylus Savagei, W. R. Heyer, Miriam M. Heyer, Rafael O. De Sá

Biology Faculty Publications

Adult Leptodactylus savagei are large, the head is as wide as long or usually wider than long, and the hind limbs are moderate in length (Table 1; Heyer and Thompson (2000) provided definitions of adult size and leg length categories for Leptodactylus). Male vocal sacs are not visible externally. Sexually active males have hypertrophied forearms, usually 1 large black spine on each thumb, rarely with 1 large spine and a prepollical bump, and a pair of black chest spines. A pair of entire dorsolateral folds extend anteriorly from at least one_half to full distance from eye to groin, the …

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Projected Climate Change Effects On Nuthatch Distribution And Diversity Across Asia, Shaily Menon, M. Zafar-Ul Islam, A. Townsend Peterson Aug 2009

Projected Climate Change Effects On Nuthatch Distribution And Diversity Across Asia, Shaily Menon, M. Zafar-Ul Islam, A. Townsend Peterson

Peer Reviewed Publications

We used ecological niche modeling approaches to explore climate change implications for one family of birds, the Sittidae, in Asia. Quantitative niche models based on present-day distributions for each of 13 species were projected onto future climate change scenarios. Species’ potential distributional areas tended to be predicted to retract along their fringes, and at lower elevations along mountain ranges. As observed in other studies, montane systems were relatively more robust to the horizontal effects of climate change on species’ distributions compared to flatland systems, so range contractions were focused in Southeast Asia and peninsular India.

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Distribution And Status Of The Northern Leopard Frog, Rana Pipiens, In West Virginia, Amanda Nicole Spriggs Jan 2009

Distribution And Status Of The Northern Leopard Frog, Rana Pipiens, In West Virginia, Amanda Nicole Spriggs

Theses, Dissertations and Capstones

The Northern Leopard Frog, Rana pipiens, is listed as a species of concern by the West Virginia Division of Natural Resources. Because this species is uncommon in West Virginia, information is needed to understand its distribution and conservation needs. I surveyed 14 historic R. pipiens locations and 70 Wildlife Management Areas throughout West Virginia beginning in March 2008. Rana pipiens was found in four locations; Greenbottom Wildlife Management Area was confirmed through both auditory and visual surveys and the rest were confirmed through visual observations. Besides Greenbottom Wildlife Management Area, all other sites were confirmed by the presence of a …

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Geographic Distribution: Hemidactylus Mabouia (Wood Slave). Usa: Florida: St. Lucie Co., Louis A. Somma Jan 2009

Geographic Distribution: Hemidactylus Mabouia (Wood Slave). Usa: Florida: St. Lucie Co., Louis A. Somma

Papers in Herpetology

FLORIDA: ST. LUCIE County: Fort Pierce, 2100 Elizabeth Avenue (27.40840oN, 80 .34595OW). May 11, 2009. Ken Hibbard. Verified by Kenneth L. Krysko. Florida Museum of Natural History, University of Florida. UF 155444. First county record. One adult female; heavily infested with ectoparasitic pterygosomatid mites, collected from a porch screen of a residence at 2200 h. Three other Hemidactylus mabouia were observed at this same locality at 2000 h on May 13, 2009; they are common in sections of the Fort Pierce area. This invasive African species is currently the most widespread and rapidly spreading nonindigenous gecko in southern and central …

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A Study On The Population Size And Natural History Of The Eastern Six‐Lined Racerunner, Aspidoscelis Sexlineata, In West Virginia, With Notes On Other Lizard Species, Emmy Johnson Jan 2008

A Study On The Population Size And Natural History Of The Eastern Six‐Lined Racerunner, Aspidoscelis Sexlineata, In West Virginia, With Notes On Other Lizard Species, Emmy Johnson

Theses, Dissertations and Capstones

Species will expand ranges through natural or human‐alterations. Such an occurrence has happened in West Virginia with Eastern Six‐lined Racerunner, Aspidsocelis sexlineata, a species that has been found to thrive in areas of high disturbance from humans. While found abundantly in other states, they are thought to occur only in the eastern panhandle of West Virginia (Morgan County) where they are believed to have come from Maryland via a railroad bridge. Without the bridge, the Potomac River forms a natural barrier between these two states. The objectives of my study were to determine the population size and natural history …

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Distribution And Dispersion Patterns Of Sandhill Crane Flocks In The Platte River Valley, Brian Lorenz, Felipe Chavez-Ramirez Jan 2008

Distribution And Dispersion Patterns Of Sandhill Crane Flocks In The Platte River Valley, Brian Lorenz, Felipe Chavez-Ramirez

Proceedings of the North American Crane Workshop

We evaluated sandhill crane (Grus canadensis) flock distribution and dispersion patterns along the Platte River Valley, Nebraska, in 2002-2003. The objectives were to: (a) determine the overall distribution and relationship between roosting and foraging flock numbers by bridge segments, (b) evaluate flocking characteristics in relation to abundance of cranes in different bridge segments and total abundance, and (c) correlate dispersion patterns and habitat use to period of migration, roost locations, and habitat types. Preliminary predictions included: foraging flock dispersions would be correlated with roost locations; greater numbers and larger flock sizes will be present in bridge segments with …

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Geographic Distribution: Sphaerodactylus Elegans Elegans (Ashy Gecko). Usa: Florida: Broward Co., Louis A. Somma, Kenneth L. Krysko Jan 2008

Geographic Distribution: Sphaerodactylus Elegans Elegans (Ashy Gecko). Usa: Florida: Broward Co., Louis A. Somma, Kenneth L. Krysko

Papers in Herpetology

FLORIDA: BROWARD County: Pembroke Pines: 1031 NW 93rd Ave (26.0168833°N, 80.2695694°W; WGS84; elev. <1 >m). October 27, 2007. Collected by Lisa A. Charlton. Verified by F. Wayne King, Florida Museum of Natural History, University of Florida. One neonate captured in Jackson sticky trap set to sample insects in an alee tree (Blighia sapida). UF 152418. New county record. Originally turned in to Division of Plant Industry (DPI), Florida Department of Agriculture and Consumer Services, Gainesville, Florida, on October 31, 2007; Entomology Log No. 8204. This nonindigenous gecko was flrst reported from Key West, Monroe County, Florida, more than 85 …

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Turtle Assemblages In The Eastern Panhandle Of West Virginia With An Emphasis On Pseudemys Rubriventris (Leconte), Ashley Renea Fisher Jan 2007

Turtle Assemblages In The Eastern Panhandle Of West Virginia With An Emphasis On Pseudemys Rubriventris (Leconte), Ashley Renea Fisher

Theses, Dissertations and Capstones

Little is known about turtle assemblages in West Virginia, especially in the eastern panhandle. The only published work on Pseudemys rubriventris (Le Conte) in the state is by Green and Pauley (1987). Pseudemys rubriventris are considered an S2 species by the West Virginia Division of Natural Resources which means they are considered rare and imperiled in the state (WVDNR, Wildlife Diversity Program). Their range includes the Coastal Plains rivers of the mid-Atlantic region, from northern North Carolina to central New Jersey (Ernst et al. 1994). In West Virginia, they inhabit the Ridge and Valley physiographic province, which is the only …

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Morphology, Reproduction And Mortality Of Equus Hemionus Hemionus In Mongolia, Annegret Stubbe, Michael Stubbe, Nyamsuren Batsaikhan Jan 2007

Morphology, Reproduction And Mortality Of Equus Hemionus Hemionus In Mongolia, Annegret Stubbe, Michael Stubbe, Nyamsuren Batsaikhan

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

There are collected materials on morphology, reproduction rate, and mortality of Dschiggetajs Equus h. hemionus between 2001 and 2006 in the South Gobi of Mongolia. It were found 794 skeletons of wild asses, 95% of these were pouched, ⅔ of them in winter coat. Pouching was also located in the protected areas of this region. The main living resources of Equus hemionus are registered in the South eastern Gobi. For the first time statistical data on morphology measurements of body length, tail and tuft, ear length, and hoofs are given. There are no significant differences between the sexes. The reproduction …

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Geographic Distribution: Ramphotyphlops Braminus (Brahminy Blindsnake). Usa: Florida: Alachua Co., Louis A. Somma Jan 2007

Geographic Distribution: Ramphotyphlops Braminus (Brahminy Blindsnake). Usa: Florida: Alachua Co., Louis A. Somma

Papers in Herpetology

One adult within a temiite colony, beneath rock. UF 151211; additional specimens (UF 151212-14) were also found. All specimens were collected between 1200-1240 h at the Division of Plant Industry (DPI), Florida Department of Agriculture and Consumer Services. In 2006, another adult Ramphotyphlops braminus was collected by an employee at this site, near a greenhouse, and was kept in captivity until it escaped. Rhamphotyphlops is occasionally encountered by employees of DPI and it may be expanding its range, as there is one specimen (UF 147001) collected from the University of Florida campus (Powell Hall) adjacent to the DPI site (29°38'7.9080"N, …

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Kulan (Equus Hemionus Pallas 1775) In Turkmenistan, Victor S. Lukarevskiy, Yu. K. Gorelov Jan 2007

Kulan (Equus Hemionus Pallas 1775) In Turkmenistan, Victor S. Lukarevskiy, Yu. K. Gorelov

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The kulan (Equus hemionus kulan) is the only odd-toed ungulate left in the wild in northern Eurasia. In the 1930s, the kulan survived in southern Turkmenistan only. In the 1940s, kulans were found only in an area named Badkhyz in Turkmenistan. To conserve the last natural population of this subspecies of kulan the Badkhyz Natural Reserve was established in 1941. The historical and contemporary distribution, fluctuation in numbers, conservation and sci research of kulan populations in the Badkhyz Natural reserve are reviewed in this paper.

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Numbers, Distribution And Social Structure Of Kiang (Equus Kiang Moorcroft 1841) Population In The Southwestern Part Of Tibet, China, Natalia V. Paklina, Chris Van Orden Jan 2007

Numbers, Distribution And Social Structure Of Kiang (Equus Kiang Moorcroft 1841) Population In The Southwestern Part Of Tibet, China, Natalia V. Paklina, Chris Van Orden

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

In September - October 1998 we made an extensive survey in southwest Tibet to study numbers, distribution and social structure of the kiang population in this remote part of its range. Kiangs were sighted between 29º 40’ and 32º 50’ N, and 81º- 86º E. They preferred broad flat valleys with lakes at an altitude from 4,000 up to 5,000 m. Small kiang groups and solitary animals were sighted in Transhimalaya. There were no kiangs in Tsangpo (Brahmaputra) River valley, in the sand desert near Ali and in the Clay Mountains near Tsada. Seven old kiang corpses were found along …

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Current Status Of The Khulan (Equus Hemionus) In The Trans-Altai Gobi, Enkhbileg Dulamtseren, Adiya Yadamjav, Dovchindorj Ganbold, Mijidorj Batmunkh Jan 2007

Current Status Of The Khulan (Equus Hemionus) In The Trans-Altai Gobi, Enkhbileg Dulamtseren, Adiya Yadamjav, Dovchindorj Ganbold, Mijidorj Batmunkh

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Since 1975, 25 wildlife surveys have been conducted in the Trans-Altai Gobi. In this paper we summarize results from the last 11 surveys, conducted between October 2000 and April 2005, and discuss our findings together with results from previous surveys.

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Genetic Resolution Of The Enigmatic Lesser Antillean Distribution Of The Frog Leptodactylus Validus (Anura, Leptodactylidae), Keneth Yanek, W. R. Heyer, Rafael O. De Sá Dec 2006

Genetic Resolution Of The Enigmatic Lesser Antillean Distribution Of The Frog Leptodactylus Validus (Anura, Leptodactylidae), Keneth Yanek, W. R. Heyer, Rafael O. De Sá

Biology Faculty Publications

Leptodactylus validus has an unusual distribution, inhabiting Trinidad, Tobago, and the Lesser Antilles, but not the mainland of South America. This distribution is inconsistent with other distribution patterns observed for these islands. Although slight variation in adult morphology has been observed among the different island populations of L. validus, call data suggest the presence of a single species. Calls of L. pallidirostris from Venezuela and Brazil suggested that this taxon might be conspecific with L. validus. Sequence data from the 12S and 16S mt rDNA genes indicate that L. validus represents a single species throughout its distribution and is conspecific …

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Leptodactylus Fragilis (Brocchi): White-Lipped Thin-Toed Frog, Miriam M. Heyer, W. Ronald Heyer, Rafael O. De Sá Jan 2006

Leptodactylus Fragilis (Brocchi): White-Lipped Thin-Toed Frog, Miriam M. Heyer, W. Ronald Heyer, Rafael O. De Sá

Biology Faculty Publications

Adult Leptodactylus fragilis are small. The head is longer than wide, and the hind limbs are moderately long (Table 1; Heyer and Thompson 2000 provided definitions of adult size and leg length categories for Leptodactylus). Male vocal sacs are laterally expanded and range from lightly gray speckled to darkly pigmented. Male snout is spatulate; female snout is rounded. Male forearms are not hypertrophied and males lack asperities on the thumbs and chest. The dorsum is spotted or blotched with dark markings, which are often chevron-shaped and sometimes confluent. The supratympanic fold is dark brown. A pair of dorsolateral folds …

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Range Expansion By Moose Into Coastal Temperate Rainforests Of British Columbia, Canada, C. T. Darimont, P. C. Paquet, T. E. Reimchen, V. Crichton May 2005

Range Expansion By Moose Into Coastal Temperate Rainforests Of British Columbia, Canada, C. T. Darimont, P. C. Paquet, T. E. Reimchen, V. Crichton

Biogeography and Ecological Opportunity Collection

Ranges of species are dynamic and respond to long-term climate change and contemporary effects such as habitat modification. We report here that moose (Alces alces) have recently colonized coastal temperate rainforests of British Columbia, Canada. Contrary to recent publications, field observations of moose and their sign, combined with their occurrence in wolf (Canis lupus) faeces, suggest that moose are now widespread on the coastal mainland and occur on least three islands. Traditional ecological knowledge (information accumulated by aboriginal peoples about their environment) suggests that colonization occurred during the mid 1900s, concomitant with logging of major watersheds that bisect the Coast …

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Facts From Faeces: Prey Remains In Wolf, Canis Lupus, Faeces Revise Occurrence Records For Mammals Of British Columbia’S Coastal Archipelago, Michael H. H. Price, Chris T. Darimont, Neville N. Winchester, Paul C. Paquet Apr 2005

Facts From Faeces: Prey Remains In Wolf, Canis Lupus, Faeces Revise Occurrence Records For Mammals Of British Columbia’S Coastal Archipelago, Michael H. H. Price, Chris T. Darimont, Neville N. Winchester, Paul C. Paquet

Biogeography and Ecological Opportunity Collection

Archipelagos often harbour taxa that are endemic and vulnerable to disturbance. Conservation planning and research for these areas depend fundamentally on accurate and current taxonomic inventories. Although basic ecological information is in its infancy, the temperate rainforest islands of coastal British Columbia are undergoing rapid human-caused modification, particularly logging. We report herein new mammal records for these islands as determined by prey remains in the faeces of Wolves (Canis lupus), the area’s apex mammalian terrestrial predator. Of particular interest is our detection of Marten (Martes americana) on islands previously inventoried and island occupancy by Moose (Alces alces), which have apparently …

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New Locations And Range Extension Of Wintering Sandhill Cranes In Central Northern Mexico, Felipe Chavez-Ramirez Jan 2005

New Locations And Range Extension Of Wintering Sandhill Cranes In Central Northern Mexico, Felipe Chavez-Ramirez

Proceedings of the North American Crane Workshop

The overall distribution of wintering sandhill cranes in Mexico has been reported and summarized in several prior documents. However, most reports are associated with counts or surveys primarily conducted for wintering waterfowl. Recent (1999- 2002) reports compiled from local researchers show, that wintering sandhill cranes are distributed much more widely in northern Mexico than is currently reported in the literature. The new locations reported here are primarily in the eastern portion of the Mexican Altiplano, in the states of Coahuila and Nuevo Leon, and in the southern portions of the Chihuahuan Desert Region in Zacatecas and San Luis Potosi. Most …

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Ecology Of Soil Microarthropods In Gobi Gurvan Saykhan Mountains, Southern Mongolia, Tsedev Bolortuya, Badamdorj Bayartogtokh Jan 2005

Ecology Of Soil Microarthropods In Gobi Gurvan Saykhan Mountains, Southern Mongolia, Tsedev Bolortuya, Badamdorj Bayartogtokh

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

In the present paper, we describe the community structure, species diversity, population density, and the character of distribution of soil microarthropods of the Gobi Gurvan Saykhan mountains. In total 45 species of soil microarthropods belonging to 37 genera and 24 families were identified. Twenty-seven species of soil microarthropods belonging to 25 genera and 20 families were found in the Züün Saykhan, 31 species belonging to 27 genera and 19 families in the Dund Saykhan. Oribatid mites are the dominant group (35 species = 77.8% of total species richness), while mesostigmatid mites account for 7 species (15.6 %). Other groups are …

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Types Of Areas And The Origin Of Black Flies Fauna In Mongolia (Diptera: Simuliidae), Josef Halgoš Jan 2005

Types Of Areas And The Origin Of Black Flies Fauna In Mongolia (Diptera: Simuliidae), Josef Halgoš

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The survey of Mongolian Black Flies species (Diptera: Simuliidae) is given in the presented work. The classification based on Emelyanov (1974) and Gorodkov (1984) appeared to be as most advantageous one. Black Flies species found on the Mongolian territory up to now were classified according to the character of their distribution among 5 groups: Holoarctic species (7 species), Eurasian (15), Eastern Palaearctic (20), Turanian-Mediterranean (7), Mongolian endemic species (8). Individual groups are divided according to the type of area into smaller subgroups. The zoogeographical analysis has shown big similarity with Black Flies zoogeography in Siberia and Far East (in percentage …

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First Results Of Wild Ass Research In The South Gobi Aymag/Mongolia In 2003 And 2004, Annegret Stubbe, Michael Stubbe, N. Batsajchan, R. Samjaa, S. Doržderem Jan 2005

First Results Of Wild Ass Research In The South Gobi Aymag/Mongolia In 2003 And 2004, Annegret Stubbe, Michael Stubbe, N. Batsajchan, R. Samjaa, S. Doržderem

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The population of the Mongolian wild ass belongs to the nominate form Equus hemionus hemionus described by Pallas in 1775. This species is adapted to semidesert habitats in the Gobi region and is listed in the Red Book of Mongolia as well as on appendix I of the Washington Convention (CITES). Mapping of the northern border of the distributional range showed a remarkable decrease in size in comparison to the maps of Murzaev (1954) or Bannikov (1954). The pressure of civilization, settlements, motorization, and increasing numbers of domestic livestock in connection with the occupation of water resources and illegal hunting …

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Beiträge Zur Ökologie Und Verbreitung Der Steppenwühlmaus Microtus Brandti Radde, 1861 In Der Mongolei = Ecology And Distribution Of The Steppe Vole Microtus Brandti Radde, 1861 In Mongolia, N. Dawaa, Michael Stubbe, Annegret Stubbe Jan 2005

Beiträge Zur Ökologie Und Verbreitung Der Steppenwühlmaus Microtus Brandti Radde, 1861 In Der Mongolei = Ecology And Distribution Of The Steppe Vole Microtus Brandti Radde, 1861 In Mongolia, N. Dawaa, Michael Stubbe, Annegret Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Microtus brandti is one of the most important pest species of Mongolian rodents. Since the publication of Bannikov (1954) the area of expansion is increased, in the Archangaj-Aimag 200 km westward, in the Central Aimag 70 km to the North and in the north-eastern part of Dornogov’- Aimag about 110 km to the South. In years of gradation the plant cover was exterminated up to 100%. We can distinguish a zone of exposed harmfulness with a damage of 70-100%. In this region 16 great centers of infestation were listed. Between 1925 and 1985 six important calamities were noticed, in intervals …

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Migration Chronology, Routes, And Distribution Of Pacific Flyway Population Lesser Sandhill Cranes, Michael J. Petrula, Thomas C. Rothe Jan 2005

Migration Chronology, Routes, And Distribution Of Pacific Flyway Population Lesser Sandhill Cranes, Michael J. Petrula, Thomas C. Rothe

Proceedings of the North American Crane Workshop

Managers of migratory game birds require accurate information about bird movements to delineate populations, protect important habitats, and regulate harvest. Data describing movements of sandhill cranes (Grus canadensis) belonging to the Pacific Flyway Population (PFP) are lacking. We used satellite telemetry to monitor movements of PFP lesser sandhill cranes (Grus c. canadensis) captured in the upper Cook Inlet and Bristol Bay regions of Alaska. Satellite transmitters were deployed on 19 flightless young (colts) and 3 adults over 3-years (2000-2002). Chronology, routes, and stopover or staging areas were identified for fall and spring migration periods. On average, …

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Temperature Regulation And The Constraints Of Climate In The Eared Grebe, Hugh I. Ellis, Joseph R. Jehl Jr Feb 2003

Temperature Regulation And The Constraints Of Climate In The Eared Grebe, Hugh I. Ellis, Joseph R. Jehl Jr

Biology: Faculty Scholarship

Eared Grebes (Podiceps nigricollis) encounter a variety of climatic regimes in their annual cycle. The most dramatic occur while on staging areas in autumn. We investigated the thermoregulatory abilities of the Eared Grebe to determine how they coped with these climate changes during staging. The basal metabolic rate (BMR) was higher than predicted. Mass-specific BMR was 1.212 mL O2/g·h for birds averaging 317 g. The thermoneutral zone is wide and extended from 15°C to 38°C. Minimal thermal conductance and average body temperature were not unusual. We conclude that Eared Grebes live most of the year under thermoneutral conditions and that …

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