Intermountain journal of sciences : IJS最新文献

Factors Influencing Seasonal Migrations of Pronghorn Across the Northern Sagebrush Steppe 影响叉角羚越冬山艾草原季节性迁徙的因素

Intermountain journal of sciences : IJS Pub Date : 2015-10-07 DOI: 10.11575/PRISM/26150

Andrew F. Jakes

{"title":"Factors Influencing Seasonal Migrations of Pronghorn Across the Northern Sagebrush Steppe","authors":"Andrew F. Jakes","doi":"10.11575/PRISM/26150","DOIUrl":"https://doi.org/10.11575/PRISM/26150","url":null,"abstract":"Birds are a highly diverse group consisting of species that use a wide-range of available resources. Therefore bird communities are thought to represent the natural complexity of ecosystems. In recent years, groups of birds and individual species have been recognized as indicators of environmental change. Even with all the potential benefits of conserving bird populations, considerable declines of avian populations in the US have been well documented. These losses highlight the need for continued large-scale monitoring programs. The North American Breeding Bird Survey (BBS) and the Integrated Monitoring in Bird Conservation Regions (IMBCR) are independent large-scale programs conducted within the US to monitor populations of birds. Each of these programs is uniquely designed to provide different types of information to resource managers within the state of Montana. We examined the current products available from BBS and IMBCR programs and the methodology employed. We also compared how each monitoring program assesses population change at the Montana state level across a variety of species to investigate potential program inconsistencies. If programs work equivalently we would expect abundance trend estimates to be in the same direction (positive or negative) and of similar magnitudes. Preliminary results suggest 94% (104/111) of species analyzed exhibited some difference in their abundance trend estimates between monitoring programs. Inconsistencies found within our species comparisons reflect inherent differences in the programs. Our results reiterate the importance for users to carefully consider the unique design, intention, and sources of bias ascribed to each program before applying monitoring data to ecological questions.","PeriodicalId":88898,"journal":{"name":"Intermountain journal of sciences : IJS","volume":"22 1","pages":"107-108"},"PeriodicalIF":0.0,"publicationDate":"2015-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64322845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Western Range Expansion of the Black Sandshell Mussel in Montana 蒙大拿州黑沙贝贻贝的西部范围扩张

Intermountain journal of sciences : IJS Pub Date : 2014-12-31 DOI: 10.5962/bhl.title.118577

D. Stagliano

引用次数: 0

Livestock Management for Coexistence with Large Carnivores, Healthy Land And Productive Ranches: A Viewpoint 与大型食肉动物、健康土地和高产牧场共存的牲畜管理观点

Intermountain journal of sciences : IJS Pub Date : 2014-12-31 DOI: 10.25675/10217/86148

M. Barnes

引用次数: 6

Effect of Rock Cover on Small Mammal Abundance in a Montana Grassland. 蒙大拿州草原岩石覆盖对小型哺乳动物数量的影响

Intermountain journal of sciences : IJS Pub Date : 2011-12-01

Kyle Richardson, Scott Carver, Richard Douglass, Amy Kuenzi

{"title":"Effect of Rock Cover on Small Mammal Abundance in a Montana Grassland.","authors":"Kyle Richardson, Scott Carver, Richard Douglass, Amy Kuenzi","doi":"","DOIUrl":"","url":null,"abstract":"We examined the influence of rock cover, as an indicator of presumable retreat site availability on the abundance of deer mice (Peromyscus maniculatus) and prevalence of Sin Nombre virus (SNV) using long-term live trapping and habitat data from three live trapping grids and a short-term (three month), spatially replicated study across three slopes in Cascade County, Montana. In our long-term study, we found that deer mice were more abundant at a live-trapping grid with greater rock cover, than two grids with less rock cover. There was a non-significant trend(P = 0.053) for deer mice to be more abundant in rocky sites in the short term study. In the long-term study, average SNV antibody prevalence among deer mice was slightly greater (5.0 vs. 3.5 % on average) at the live trapping grid with more rock cover, than the grid with less rock cover. We were unable to demonstrate differences in SNV antibody prevalence among treatments in the short-term study. Further studies are needed to elucidate the multiple determinants of deer mouse abundance and SNV prevalence in grassland ecosystem and other habitat types.","PeriodicalId":88898,"journal":{"name":"Intermountain journal of sciences : IJS","volume":"17 1-4","pages":"20-29"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4012766/pdf/nihms361604.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32331817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Grazing Effects on Deer Mice with Implications to Human Exposure to Sin Nombre Virus. 放牧对鹿鼠的影响及其对人类暴露于Sin Nombre病毒的影响。

Intermountain journal of sciences : IJS Pub Date : 2011-12-01

Abigail J Leary, Amy J Kuenzi, Richard J Douglass

{"title":"Grazing Effects on Deer Mice with Implications to Human Exposure to Sin Nombre Virus.","authors":"Abigail J Leary, Amy J Kuenzi, Richard J Douglass","doi":"","DOIUrl":"","url":null,"abstract":"We examined the effects of grazing on deer mouse (Peromyscus maniculatus) movements into buildings using passive integrated transponder (PIT) technology and small simulated buildings located on 0.6-ha treatment (grazing) and control (no grazing) plots. Twelve experimental 9-day trials were conducted over the course of the study. During these trials, mouse movements into buildings were monitored during three time periods (each 3 days in length). In the treatment plots these time periods corresponded to pre-grazing, grazing, and post grazing by horses. The number of individual deer mice entering buildings over time decreased in both the grazed and control plots during the 9 days of each experiment. The number of entrances per/individual among the pre-grazing, grazing and post grazing periods was different between control and treated plots for both males and females. The distribution of entrances/individual among the three periods differed between males and females in both grazed and control plots. The habitat modification caused by grazing appeared to reduce deer mouse activity (entrances/individual) in buildings but does not affect the number of mice entering buildings. Reducing vegetative cover by grazing or mowing may not affect the number of mice investigating small structures but grazing creates different activity patterns in the structures for neighboring deer mice.","PeriodicalId":88898,"journal":{"name":"Intermountain journal of sciences : IJS","volume":"17 1-4","pages":"30-37"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045612/pdf/nihms361603.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32407518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Experimental Test of Factors Attracting Deer Mice into Buildings. 吸引鹿鼠进入建筑物的因素的实验测试。

Intermountain journal of sciences : IJS Pub Date : 2009-09-01

Amy J Kuenzi, Richard Douglass

{"title":"An Experimental Test of Factors Attracting Deer Mice into Buildings.","authors":"Amy J Kuenzi, Richard Douglass","doi":"","DOIUrl":"","url":null,"abstract":"Deer mice (Peromyscus maniculatus) are the principal reservoir host of Sin Nombre virus (SNV). Deer mice use a wide variety of habitats including peridomestic settings in and around human dwellings, their presence in and around homes has been implicated as a risk factor for acquiring Hantavirus Pulmonary Syndrome. Deer mice are believed to enter buildings in order to gain access to a variety of resources including food, bedding material, and better thermal microclimates. However, no one has experimentally tested which factors influence mice use of buildings. We conducted experiments using small simulated buildings to determine the effects of two factors, i.e., food and bedding material, on mouse activity in these buildings. We also examined if these effects varied with time of year. We found that deer mice entered our buildings regardless of the presence or absence of food or bedding. However, the amount of activity in buildings was affected by what they contained. We found significantly higher indices of activity in buildings containing food compared to both empty buildings (control) and buildings containing bedding material. Time of year did not affect activity in buildings.","PeriodicalId":88898,"journal":{"name":"Intermountain journal of sciences : IJS","volume":"15 1-3","pages":"27-31"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2902182/pdf/nihms-190096.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"29121198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0