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Tuesday, July 03, 2007

Access levels for ecology articles in Google Scholar

Marilyn Christianson, Ecology Articles in Google Scholar: Levels of Access to Articles in Core Journals, Issues in Science and Technology Librarianship, Winter 2007. 

Abstract:   Eight-hundred forty articles from core ecology journals were searched in Google Scholar (GS) to determine level and completeness of indexing and access. Testing occurred both on campus and off, and within each venue searching was divided evenly into basic and advanced modes. Off campus, about nine percent and on campus, about thirty-eight percent of links led to text that could be opened directly, without barriers. Fifty-seven percent of test articles had full citations or better, and over seventy-seven percent had at least some type of completable citation. Older articles were less likely to be represented. Full-text articles were concentrated at author sites and at a small number of provider sites. The advanced search found somewhat more full text than did the basic search. Highly cited articles were more likely to be included in Google Scholar.