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Table 2 The results of literature searching and duplicate removal, indicating the number of articles from each source that were included after the full-text screening stage

From: The scope and extent of literature that maps threats to species globally: a systematic map

Source

Date Searched

Total results

Duplicates removed

Relevant full-texts

Relevance rate (%)

SCOPUS

15.9.20

10,646

40

881

8.3

Web of Science Core Collection

15.9.20

8953

6544

137

5.7

ProQuest Natural Science (Published)

15.9.20

9078

8690

11

2.8

ProQuest Natural Science (Grey Literature)

15.9.20

395

40

26

11.3

Google Scholar

15.9.20

500

72

13

3.0

Organisational Websites

19.4.21–27.4.21

1238

0

23

1.9

  1. Relevance is the percentage of de-duplicated results that were included after full-text screening. An additional 22 articles were excluded during the coding stage