Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Cooper, Cynthia |
| Copyright Year | 2008 |
| Abstract | Quantile regression and an extension of a Oaxaca/Blinder decomposition are applied to US EPA’s Environmental Monitoring and Assessment Program (EMAP) Southwestern stream survey data to estimate the impact of physical and chemical stressors on benthic community fitness. Observations were collected in xeric and mountainous ecoregions with distinct natural environments, of diverse and confounding land uses, and exhibiting different ranges of benthic fitness. The behavior of the benthic community fitness at the extremes is of particular interest to resource managers for prioritizing stressors. Quantile regression characterizes behavior of specific response percentiles (the response for which the specified percent of population responses are at or below that value), depending on related conditions (covariates). In this application it is used to asses the change in association of fitness score and stream condition as the level of disturbance in stream segments changes. Quantile regression models the response behavior conditional on the covariates taken together. The Oaxaca/Blinder method estimates the unconditional effect of a particular covariate after accounting for explainable differences due to the rest of the covariates. Modeling the unconditional behavior provides a region-wide description of fitness-stressor associations. In this application, Melly’s (2006) extension of the Oaxaca/Blinder decomposition is employed to estimate differences between quantiles of stream segments with a stressor condition above or below a dividing threshold after accounting for differences due to the other conditions. The effect of having increased concentrations of nitrogen and phosphorus and increased levels of conductivity are generally more detrimental to benthic communities of streams segments that are more compromised. |
| Starting Page | 29 |
| Ending Page | 53 |
| Page Count | 25 |
| File Format | |
| ISSN | 13528505 |
| Journal | Environmental and Ecological Statistics |
| Volume Number | 17 |
| Issue Number | 1 |
| e-ISSN | 15733009 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2008-08-12 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Quantile regression Oaxaca/Blinder decomposition Counterfactual distribution Evolutionary Biology Statistics Mathematical Biology in General Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Statistics and Probability Environmental Science Statistics, Probability and Uncertainty |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|