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@article{
 title = {How many species?},
 type = {article},
 year = {1990},
 pages = {293-304},
 volume = {330},
 websites = {http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-0025526257&partnerID=40&rel=R5.6.0},
 id = {05acf69a-4f2c-3eec-9c0f-e73be2a501be},
 created = {2011-02-22T18:00:53.000Z},
 file_attached = {false},
 profile_id = {c04350e2-ca59-3023-9537-35726b8dc7ec},
 group_id = {3addd0f7-d578-34d3-be80-24022cc062a1},
 last_modified = {2019-06-04T14:58:43.900Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {May1990},
 source_type = {Journal Article},
 notes = {Cited By (since 1996): 91<m:linebreak></m:linebreak>Journal Article},
 folder_uuids = {3486880f-0abb-4dfe-96b2-2c2c202a7313},
 private_publication = {false},
 abstract = {Outlines approaches to estimating what the total number of species on Earth might be, eg extrapolation of past trends; direct assessments based on the overall fraction previously recorded among newly studied groups of tropical insects; indirect assessment derived from recent studies of arthropods in the canopies of tropical trees (giving attention to the question of what fraction of the species found on a given host-tree are likely to be "effectively specialized' on it); and estimates inferred from theoretical and empirical patterns in species-size relations or in food web structure. There is a discussion by R.J.H. Beverton. -from Author},
 bibtype = {article},
 author = {May, R M and Anonymous, undefined},
 journal = {Philosophical Transactions - Royal Society of London, B},
 number = {1257}
}