We find that large shared topics exist, but that these are primarily topics that would be expected in scientific publications in general.
Although shared topics exist, the obtained topic model confirms the results hinted at by only two publications (Roman et al. [2013]; Butt et al. [2013]) in our document set that matched both the terms "citizen science" and "forest monitoring".
We aim to provide a description of the combined topical landscape of these two broad thematic sets of publications, explore to what extent shared topics exist, which topics are clearly separated but potentially related and discuss the potential of this approach in providing new insights and opportunities for citizen science applications in the forest monitoring domain.
The latter deviation from the article classification, which is not explained by category co-occurrence, does not exclude that similarities between these topics exist but are considered not strong enough by the authors to label the articles with both subject classes.
These topics exist mostly from the beginning (taking 1957 as starting point) and have been accepted topics within the community.
Indeed, summaries of topics exist that could serve as syllabi for medical courses [ 41- 43].
Many excellent reviews on specific topics exist, to which the reader is referred in the subsequent sections.
But far more leeway to dissect the topic exists in places where gay rights are more protected.
Tooth damage as a result of oral stereotypies is evident in captive orca, yet little research on the topic exists.
The basics of surface wetting are summarized here; extensive literature on the topic exists: Israelachvili [91], Bhushan [92], De Gennes et al. [93] and Bhushan [94], Nosonovsky and Bhushan [95], Bormashenko [96], Butt et al. [97], Schellenberger et al. [98], and Bhushan [99].
