Dissertations / Theses: 'Ecology of the vole][Vole reproduction'

1

Spears, N. "Environmental and genetic factors regulating the breeding season of the vole." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376949.

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Nelson, Fletcher Chris. "Ecology of Owens Valley vole." Texas A&M University, 2004. http://hdl.handle.net/1969.1/2270.

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Little current data exist concerning the status and ecology of Owens Valley vole (OVV; Microtus californicus vallicola), despite its California Department of Fish and Game listing as a Species of Special Concern. No formal studies have been undertaken to understand the ecology of OVV or other small mammal species occurring in mesic-vegetative communities in Owens Valley, California. I investigated the relative abundance of small mammal species in mesic-plant associations of Owens Valley, OVV distribution, and OVV use of vegetative types as habitat. Low OVV capture rates decreased the efficiency of systematic trapping surveys. Live trapping and sign surveys yielded contradictory results. The distribution of OVV was associated with irrigation and microhabitat features such as waterways, fence lines, and brush patches. The distribution and use of vegetation types by OVV was similar to that of the California vole (M. californicus).

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Efford, M. G. "The structure and dynamics of water vole populations." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371523.

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Robinson, Joshua J. "Phylogeographic analysis of the prairie vole (Microtus ochrogaster)." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1595600090967193.

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Fernandez, de la Pradilla Villar Jose Ignacio. "Land use and population regulation vole dynamics in a grazing experiment /." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=62156.

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6

Benge, Jonathan Mark. "The ecology of the water vole (Arvicola terrertris L.) in Southern England." Thesis, University of Hertfordshire, 2004. http://hdl.handle.net/2299/14179.

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In the UK, the water vole is usually found associated with water; in rivers, canals, ditches, streams, lakes and ponds. Now listed as a UK Biodiversity Action Plan priority species for conservation it receives partial protection under UK legislation. The current study used various techniques to investigate aspects of the ecology of water voles at five sites in the southern England. Live-trapping techniques examined aspects of social organisation, such as population size, structure, distribution and Observed Range Lengths. Capture rates, weight differences and survival were also examined. Water voles became extinct from two study sites most likely due to American mink predation. Densities of water voles at three sites were generally higher than those recorded elsewhere, suggesting density may be dependent on type of habitat or other variables. Water voles were distributed along almost the entire length of these study sites. All populations peaked in size (as a result of juveniles entering the populations) and adult weights peaked in the spring and summer, declining in the autumn. Adult weights were generally lower than found in previous studies with no difference between adult male and female weights at any site. High rate of ear tag loss meant individuals could not be reliably followed between months, therefore the population estimates based on Minimum Number Alive (MNA) may have been significantly underestimated. The highest period of activity was between 22: 00hrs and 06: 00hrs corresponding with published studies. The relationship between water vole numbers and latrines was examined and compared with published literature. Seasonal patterns in the production of latrines were examined to gain further information on their function and the bearing that this may have upon any relationship between latrines and water vole numbers. Further examination considered the number of latrines per individual water vole and compared these with the published literature. Rainfall rendered many counts invalid as rising water levels or the act of the rain itself washed latrines away. Numbers of latrines per water vole were generally lower than published attributable to differences in the physical character of sites. Three sites showed a broadly similar trend in the numbers of latrine counts across months. Latrine numbers generally fell over winter which is likely to correspond with low water vole numbers and above ground activity. Peaks in latrine numbers in March and April were attributed to the onset of the breeding season whilst peaks seen in August were attributed to large population sizes. Relationships were found between latrines and the total number of water voles captured, MNA, adult females and all adults; latrines and adult females; all adults during the breeding season at two of the sites. The resultant predictive equation for the number of water voles from the number of latrines was not significantly different from the published relationship. Water voles were radio-tracked at one study site to examine overwinter behaviour. Home range sizes, movements, activity patterns and interactions were investigated. Due to time constraints and difficulty of intensive radio-tracking during cold conditions some sessions were done in August and September and some continued into March and April. Three of the tracked voles died during the study, two assumed to be through predation, probably by foxes, and one due to unknown causes. There was no difference between the area of male and female home ranges, however, male home ranges appeared to be longer than female ones. Increases in mean range length were seen in January, February and April likely to correspond to the onset of the breeding season. In many cases the majority of activity was centred on one or two points, identified as nest sites. A number of male water voles, and one female, dispersed to `new' home ranges. Activity occurred within discrete blocks of time, 1.5hrs to 4hrs with rest periods of 0.5hrs to 4.5hrs. Home ranges of a number of males and females overlapped and positive associations only occurred towards the end of the breeding season.

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Rogers, Lucy Margaret. "The ecology of small mammals in set-aside land." Thesis, University of Aberdeen, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366123.

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The ecology of small mammal communities found in set-aside and adjacent farm land was investigated to determine the ecological consequences of set-aside land to small mammals. Field work was carried out for two years at three study sites in NE Scotland. First Aldroughty farm, a mosaic of set-aside, crop and semi-natural land. The two remaining study sites; Ythan Lodge at Newburgh, and Fraser's farm near Aldroughty, were whole fields of set-aside. Wood mice Apodemus sylvaticus, bank voles Clethrionomys glareolus and field voles Microtus agrestis were trapped in the habitat mosaic at Aldroughty, and wood mice and field voles in the set-aside at Newburgh. Wood mice had higher densities, greater survival, heavier weights, longer breeding seasons and more juveniles at Aldroughty than Newburgh. These differences were thought to be due to a difference in habitat productivity between the two sites. Field voles showed less of a difference in population dynamics between Aldroughty and Newburgh, and both species of vole maintained populations at low density. The home range size of 33 wood mice was measured using radiotelemetry. At both study sites home range size was smaller than in other habitats revealed by other studies. The apparently anomalous results obtained, of low population densities and small home range sizes of wood mice in the set-aside at Newburgh, may have been due to predation from cats Felis catus. Wood mice showed no clear habitat preference, nesting and foraging in all habitat types, while both vole species showed almost exclusive preference for rough grassland. An assessment of the habitat characteristics of the study sites showed that there was heterogeneity in the vegetation communities found in set-aside.

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Reynolds, Peter. "The impact of changes in land-use in Orkney, on the vole Microtus arvalis orcadensis and its avian predators." Thesis, University of Aberdeen, 1992. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU050809.

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The microtine rodent Microtus arvalis orcadensis is endemic to 5 of the Orkney Islands. Aspects of the ecology of this animal were studied on Mainland Orkney during the period June 1988-December 1990. Subject areas included habitat-related variations in population density, social organisation and short-term and seasonal variations in activity. The importance of the Orkney Vole in the diets of Hen Harriers, Short-eared Owls and Kestrels was quantified and assessed, both in the context of optimal foraging theory and in relation to the contribution made by female avian predators to nest provisioning. The selection of hunting habitat by avian predators, in relation to spatial variations in vole population density and temporal variations in vole activity was also considered, particularly with respect to Short-eared Owls. Using land-cover data derived from air-photo interpretation, estimates of the total population of Orkney Voles were made and the implications of changing land-use for the conservation of both Vole and avian predator populations considered. Specific types of land management are proposed to ensure that populations of both the Orkney Vole and the avian predators which depend to a varying degree upon them, are effectively conserved.

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Neyland, Penelope Jane. "Habitat, home range, diet and demography of the water vole (Arvicola amphibious) : patch-use in a complex wetland landscape." Thesis, Swansea University, 2011. https://cronfa.swan.ac.uk/Record/cronfa42744.

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Water vole (Arvicola amphibius) ecology was studied at the National Wetland Centre Wales (NWCW), a National Key Site for water voles, consisting of a diversity of interconnected habitats, including ponds, ditches and reed-beds. A novel method of mapping the vegetation of the wetland landscape was devised, using patches of vegetation classified according to the dominant vegetation type (DVT). The richness and abundance of DVT patches was used as an index of diversity at the habitat level. This provided a basis for describing the matrix habitat, which underpins the study of water vole ecology at the patch-landscape scale. The practical application of the DVT mapping approach allows the stages of wetland succession to be monitored, identifies areas of high biodiversity and provides a baseline on which to monitor the distribution and movements of animal species. Implementation of this method reduces time and the need for specialist field surveyors, thereby facilitating efficient management practices if applied at a national level. An intensive four year study of a metapopulation of water voles on eight adjacent ponds in the NWCW wetland reserve revealed an important insight into the dynamics of wild populations in complex, non-linear habitats. Multi-annual fluctuations in population densities were observed, characterised by a peak density phase and a low density phase. Density dependent juvenile dispersal was characteristic of the water vole population. Female water voles in diverse pond habitats maintained intra-sexually overlapping home ranges, uncharacteristic of this species. During the breeding season, water voles selected the ponds with the highest habitat diversity (assemblage of DVTs) but were typically associated with the least diverse DVT patches within the vegetation mosaic. Temporal plasticity in niche partitioning was observed both between genders and between individual female water voles at NWCW. During the winter. Bramble (Rubus fruticosus) was the most important dominant vegetation type, providing a source of cover and protection from predation. Water voles selected 23 plant species (and 3 non-plant species) as food. Soft Rush (Juncus effusus) a species with high nitrogen and calorific content was favoured particularly. The physical effects of water vole grazing and burrowing, combined with the large amounts of nitrogen- containing faeces deposited in latrines and underground burrows, has implications for wetland nutrient cycles. The effects of large scale vegetation clearance are described and holistic management recommendations are presented.

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Wilkinson, Suzanne A. J. "The ecology of the field vole Microtus agrestis in lowland Britain : the conservation of a dominant prey species." Thesis, University of Bristol, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402333.

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11

Ekerholm, Per. "Population dynamics of tundra-living grey-sided voles." Doctoral thesis, Umeå University, Ecology and Environmental Science, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-187.

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This thesis deals with the dynamics of tundra living voles with emphasis on the most common one, the grey-sided vole (Clethrionomys rufocanus). The tundra area chosen for the study was Finnmarksvidda, a vast flatland in northernmost Norway. All small mammal herbivores in the area showed dramatic fluctuations, and field experiment were conducted in order to elucidate these density fluctuations. The specific subjects addressed included: 1/ Temporal and spatial appearance of density fluctuations of voles and lemmings in the area, 2/ The generality of the density patterns observed, 3/ The impact of predation by vole predators during summertime, 4/ The impact of grey-sided vole grazing on food plants of different preference in a predator free environment, in the presence and absence of extra food, and 5/ The impact of food availability on density and demography of grey-sided voles in a predator free environment.

The results achieved showed that voles in the slope and lowland had cyclic density fluctuations with 5 years duration. The cycles consisted of four phases: an increase phase, a peak phase, a decline phase and a crash phase. In the unproductive lowland and on the moderately productive slope, small pockets of productive habitats seemed to work as “triggers” for the cycles. The lemming fluctuations in the upper plateau (separated from the slope by a steep zone of boulders) differed markedly from the vole patterns in the lowland.

Only two lemming peaks were recorded in twenty years. Both peaks had very short increase phases, a knife-sharppeak phase and no decline phase before the crash. A comparison between our results and lemming and vole populations from two other areas in Fennoscandia revealed the same difference in fluctuation pattern between lemmings and voles as seen in our area. This results suggests that lemmings in barren tundra highlands and voles in slightly more productive tundra lowlands are regulated by different mechanisms.

The exclusion of vole predators from vole populations during summertime led to increase in overall vole density. Densities of the clumsy field vole (Microtus agrestis) and juveniles of all species showed the strongest positive effects of the exclusion.

An experiment analysing the effects of food availability was conducted in islands in a large lake where grey-sided voles were introduced to predator free islands . Supplemental food was given to the voles in two unproductive, and two productive islands. Two unproductive and two productive islands were used as reference islands. The density of voles and the vole weight were higher in both the islands with supplemental food and those with high natural productivity. Increased vole density did not significantly increase grazing damage to plants. The cyclic density pattern of the voles in the nearby mainland (that harboured resident vole specialist predators as stoat and weasel) showed little resemblance to the seasonal fluctuations found in the islands (devoid of resident vole specialist predators). This result suggested that predation by stoat and weasel on grey-sided vole populations may cause the cyclic vole fluctuations seen in the area.

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Caplen, Gina Jane. "Utilising non-invasive means to monitor short-tailed field vole (Microtus agrestis) reproduction : an initial step in the development of a novel terrestrial biomarker." Thesis, King's College London (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417383.

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13

Christensen, Pernilla. "The long-term decline of the grey-sided vole (Clethrionomys rufocanus) in boreal Sweden: importance of focal forest patch and matrix." Doctoral thesis, Umeå : Department of Ecology and Environmental Science, Umeå Univ, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-876.

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14

Lucia, Kristen E. "Inbreeding avoidance and the effects of inbreeding on adult prairie voles (Microtus ochrogaster)." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1313167384.

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15

Arzel, Céline. "Ecologie de la sarcelle d´hiver et des autres canards de surface : connexion entre les sites d’hivernage, les haltes migratoires et les zones de reproduction." Toulouse 3, 2006. http://www.theses.fr/2006TOU30153.

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Afin de développer des outils prédictifs de dynamique de populations des espèces migratrices, connaître parfaitement leur écologie est essentiel. La migration printanière, cruciale dans le cycle annuel, a toutefois été peu étudiée. La sarcelle d´hiver Anas crecca est l´une des espèces migratrices les plus chassées en Europe, mais son écologie printanière reste méconnue. A l´aide d´une méthode de marquage externe et de reprises de bagues, les durées de stationnement sur deux haltes migratoires et la date de départ en migration au printemps ont pu être définies. Le temps alloué à l´alimentation et les méthodes employées par la sarcelle et d’autres canards ont ensuite été étudiés de l’hivernage à la reproduction, illustrant le rôle majeur du risque de prédation sur les stratégies des oiseaux. Enfin, à l´encontre de deux théories classiques, nous montrons 1) que les pics de migration des oiseaux ne correspondaient pas à ceux des ressources alimentaires, et 2) que celles-ci n´étaient pas plus abondantes au moment de la reproduction au nord qu’au sud de l’Europe. Les mécanismes régulant la migration des Anatidés méritent d’être étudiés plus en détail dans le futur
A good knowledge of their ecology is a prerequisite to develop predictive population dynamics models for migratory species. Unfortunately, spring migration has received little attention, despite its crucial role in the annual cycle. Teal Anas crecca is among the most heavily hunted migratory species in Europe, but its ecology in spring remains virtually unexplored. Relying on individual nasal marking plus ring recoveries, residence times at two migratory stopovers and the onset of spring migration have been precisely defined. Average daily feeding time and foraging methods of Teal and other ducks have then been studied from the wintering to the breeding grounds, highlighting the major role of predation risk on the birds’ strategies. Finally, we show 1) that the peak migratory period of the birds did not match the maximum abundance of food resources, and 2) that during the breeding period these resources were not more abundant at the breeding lakes than in the Camargue, as opposed to earlier theories. Further work on wildfowl migration strategies are nonetheless required

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Bond, Monica L. "Density, sex ratio, and space use in the gray-tailed vole, Microtus canicaudus." Thesis, 1998. http://hdl.handle.net/1957/33372.

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Female and male mammals have different behavioral strategies for maximizing their reproductive success. Pregnancy and lactation obligate female mammals to provide greater parental investment than males; thus, females compete with each other for food and space to rear their offspring, while male mammals compete with each other for female mates. Therefore, natural selection should favor any behavior among females that increases their access to food and space to rear successful offspring and any behavior among males that increases their access to females. In two enclosure experiments, the gray-tailed vole, Microtus canicaudus, was used as a model species to study (1) the relative influence of male competition versus access to females on space use by males and (2) facultative sex-ratio adjustment at the population level in response to low and high population densities, skewed adult sex ratios, and season. Home-range sizes of male voles did not appear to expand beyond an overlap with about five members of either sex. Intrasexual competition with 3-4 males and/or overlap with five females appear to set the upper limits to home-range size. Space use by males is influenced by intrasexual competition and by access to females with an upper limit of overlap with either sex. Additionally, facultative sex-ratio adjustment in response to changing population densities and skewing adult sex ratios did not occur, but a seasonal effect was detected with significantly more males produced in autumn than in spring. Under the conditions of this experimental study, I was not able to measure sex ratios of individual litters, but if any sex-ratio adjustment occurred in response to densities and adult sex ratios, it was not detectable at the population level.
Graduation date: 1999

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De, la Maza Helen M. "Exposure to strangers does not cause pregnancy distribution or infanticide in the gray-tailed vole." Thesis, 1997. http://hdl.handle.net/1957/34360.

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Numerous laboratory studies with at least 12 species of rodents have reported that exposure of females to strange males results in pregnancy disruption or infanticide. The proximate causes and ultimate benefits of these behaviors have been proposed from an evolutionary perspective. To determine if exposure to strange males or females caused pregnancy disruption and (or) infanticide in a resident gray-tailed vole (Microtus canicaudus) population, pregnancy rate and juvenile recruitment were monitored in populations of 12 female and 12 male voles following introduction of unfamiliar adults. These experiments were conducted in 12 0.2 ha enclosures using three treatments and a control. Every 10 days 12 males, six males, or six females were removed and replaced in the three treatments, respectively, or the populations were left unmanipulated in the control (3 replicates/treatment). The time to first parturition, time between parturitions, number of juveniles recruited/parturition, and percent of births followed by lactation did not vary among the controls and three treatments. The only observable effects of treatment were a slight non-significant delay in time to first birth in the 12-male treatment and a slightly significant difference in the number of pregnancies per female. These results do not support previous laboratory studies indicating that exposure to strangers causes pregnancy disruption and (or) infanticide at high rates. Therefore, in field conditions, little evidence was found indicating that female gray-tailed voles' reproductive fitness declines after exposure to strangers. I propose that results from laboratory studies on behavioral aspects of mammals should be validated with field data prior to being extrapolated to natural populations and applied to evolutionary paradigms.
Graduation date: 1997

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Dalton, Christine L. "Effects of female kin groups on reproduction and demography in the gray-tailed vole (Microtus canicaudus)." Thesis, 1998. http://hdl.handle.net/1957/33678.

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The 3-5 year cyclical fluctuations in populations of many vole and lemming species have perplexed ecologists for many years. Numerous hypotheses have been proposed to explain microtine rodent cycles, including various aspects of social behavior. Microtine rodents commonly form kin groups composed of related females. Charnov and Finerty (1980) proposed that the formation and breakup of kin groups could, in part, explain the rates of population increase and decline associated with cycles. My experiment sought to determine if kin groups provided population-level benefits in gray-tailed voles, Microtus canicaudus. I compared unmanipulated populations with populations in which kin-structuring was experimentally disrupted to determine if kin groups affected population growth rates and size, reproduction, pregnancy and lactation rates, and recruitment, movement and survival of juveniles. I monitored demography and reproductive behavior in eight 0.2 ha experimental enclosures during a summer breeding season. I found no differences in demographic or female reproductive parameters between control and treatment enclosures, with the exception of a delayed time to first pregnancy for females introduced into the treatment enclosures. In addition, I found no differences in the time to sexual maturation or dispersal movements of juvenile males between control and treatment enclosures. I conclude that disrupting the formation of kin groups does not adversely affect demographic or reproductive parameters at the population-level in gray-tailed voles, and suggest that the contribution of kin groups to social behaviors that may affect population regulation is probably quite small.
Graduation date: 1998

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Caslin, Tracie M. "Individual and demographic responses of the gray-tailed Vole (Microtus canicaudus) to an endocrine disruptor." Thesis, 1998. http://hdl.handle.net/1957/33561.

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In an experimental field study, populations of gray-tailed voles (Microtus canicaudus) were exposed to a commercial formulation of vinclozolin, a fungicide effective for disease control on ornamental plants, turf grasses, and fruits and vegetables. Vinclozolin has been shown in laboratory experiments to behave as an androgen antagonist, impairing the reproductive development in males of several species of mammals when exposed in utero. However, when applied to grassland habitat containing populations of gray-tailed voles, no biologically significant impairment was observed in reproductive development of male voles whose mothers were exposed to the treatment while the young were in utero. Reproductive organs were sufficiently developed to result in high reproductive rates and juvenile recruitment in the field with no effects on population growth or demography. Under the conditions of this study, one standard application of Curalan[copyright] fungicide had no measurable reproductive or demographic consequences on gray-tailed voles. However, the results suggest that higher application rates or several successive applications may have negative impacts on reproductive development and demography of wild vole populations.
Graduation date: 1999

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20

Davis-Born, Renee. "Influence of movement corridors on enclosed populations of the gray-tailed vole : do immigrants affect reproduction and dispersal of residents in a patchy environment?" Thesis, 1997. http://hdl.handle.net/1957/34238.

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I monitored demography, movement, and reproductive behavior of gray-tailed voles, Microtus canicaudus, in experimental habitat patches with and without corridors. I tested the hypotheses that reproductive rate, juvenile recruitment, and population size and growth rate would be affected negatively by immigrants that were introduced to resident groups (+ male and + female treatments). I hypothesized that "strangers" would commit infanticide thus decreasing juvenile recruitment. Second, I determined if movement corridors facilitated dispersal among habitat patches, thus potentially increasing infanticide, but decreasing reproductive inhibition of opposite-sex relatives by allowing them to separate (corridor treatment). Experiments were conducted in 12 0.2 ha enclosures planted with alfalfa that was fragmented into four patches (each 156 m��) separated by 12.5 m of bare ground. Introduction of unfamiliar conspecifics did not adversely affect reproductive rate, juvenile recruitment, population size, density, or growth rate. Corridors facilitated dispersal movements with males moving more than did females; however, corridors did not result in an even distribution of animals in the four patches. Unconnected habitat patches resulted in female- rather than the typical male-biased dispersal and females dispersed at lower body mass than in controls. Males that did not disperse from their natal patch exhibited a slight delay in sexual maturation. I conclude that movement is deterred in patchy environments, enhanced with corridors, and differentially affects males and females. Behavioral factors that affect an individual's dispersal or reproductive pattern should be considered in landscape planning.
Graduation date: 1997

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Chou, Po-Han, and 周柏翰. "Foraging Ecology of Taiwan Field Vole (Microtus kikuchii)in a Taiwan Fir-Taiwan Hemlock Forest at the Hehuan Area: Effects of Plant Attributes." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/04168906890376841325.

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碩士
國立臺灣大學
生態學與演化生物學研究所
102
A key aspect of herbivore foraging ecology investigates how plant attributes, including chemical, physical characteristics, and relative abundance affect plant palatability and herbivore diets, which, in turn, help us predict the impact of herbivory on plant communities. The Taiwan field vole (Microtus kikuchii) is an endemic species in Taiwan. Previous studies have investigated its foraging ecology in alpine meadows. In this study, I aimed to understand the foraging ecology of Taiwan field voles in a Taiwan fir-Taiwan hemlock forest at the Hehuan area. I analyzed the diets of Taiwan field voles and conducted palatability feeding experiments in three seasons (March, July, and November). Five dominant plants were included in feeding experiments: Yushania niitakayamensis, Anisliaea reflexa, Elatostema trilobulatum, Dryopsis transmorrisonensis and Dicranum japonicum. I measured 7 chemical compounds, toughness, and relative abundance of the 5 species. The results showed that vole diets were mainly composed of Yushania niitakayamensis, which was also the most palatable plant. Different species had different palatability to voles. Vole diets showed significant seasonal effects. Chemical characteristic of plants affected palatability: crude protein had a positive effect. Furthermore, toughness had a negative effect on palatability. Besides, the results in diet analyses and palatability experiments were generally consistent with each other. In conclusion, Yushania niitakayamensis remains the most important food resource for Taiwan field voles in alpine forest. Plants attributes significantly influence palatability.

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Krueger, Frank. "Zur zeitlichen Prognose, räumlichen Verteilung und Heilungsdynamik von durch Wühlmäuse (Erdmaus, Microtus agrestis L., Rötelmaus, Clethrionomys glareolus Schreb. und Feldmaus, Microtus arvalis Pallas ) verursachten Nageschäden an Forstpflanzen." Doctoral thesis, 2002. http://hdl.handle.net/11858/00-1735-0000-0006-B160-8.

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Dissertations / Theses on the topic 'Ecology of the vole][Vole reproduction'

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