D
D. Johan Kotze
Researcher at University of Helsinki
Publications - 88
Citations - 5496
D. Johan Kotze is an academic researcher from University of Helsinki. The author has contributed to research in topics: Habitat & Species richness. The author has an hindex of 30, co-authored 76 publications receiving 4654 citations.
Papers
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Journal ArticleDOI
Do not log-transform count data
Robert B. O'Hara,D. Johan Kotze +1 more
TL;DR: It is recommended that count data should not be analysed by log-transforming it, but instead models based on Poisson and negative binomial distributions should be used.
Journal ArticleDOI
Do not log-transform count data
Robert B. O'Hara,D. Johan Kotze +1 more
TL;DR: This work compared the outcome of fitting models that were transformed in various ways with results from fitting models using Poisson and negative binomial models to untransformed count data, finding that the transformations performed poorly, except when the dispersion was small and the mean counts were large.
Journal ArticleDOI
Using the ecosystem services approach for better planning and conservation of urban green spaces: a Finland case study
Jari Niemelä,Sanna-Riikka Saarela,Tarja Söderman,Leena Kopperoinen,Vesa Yli-Pelkonen,Seija Väre,D. Johan Kotze +6 more
TL;DR: In this article, the authors address the most important ecosystem services in functional urban regions in Finland and propose an approach for land-use planning to develop ecologically sustainable urban regions, which is not yet widely used in planning practices.
Journal ArticleDOI
Forty years of carabid beetle research in Europe – from taxonomy, biology, ecology and population studies to bioindication, habitat assessment and conservation
D. Johan Kotze,Pietro Brandmayr,Achille Casale,Emmanuelle Dauffy-Richard,Wouter Dekoninck,Matti Koivula,Gábor L. Lövei,Dietrich Mossakowski,Jinze Noordijk,W. Paarmann,Roberto Pizzoloto,Pavel Saska,Axel Schwerk,José Serrano,Jan Szyszko,Angela Taboada Palomares,H. Turin,Stephen Venn,Rikjan Vermeulen,Tullia Zetto Brandmayr +19 more
TL;DR: A subjective summary of some of the major developments in carabidology since the 1960s, which can be useful in population studies, bioindication, conservation biology and landscape ecology.
Journal ArticleDOI
Carabid beetle assemblages (Coleoptera, Carabidae) across urban-rural gradients: an international comparison
Jari Niemelä,D. Johan Kotze,Stephen Venn,Lyubomir Penev,Ivailo Stoyanov,John R. Spence,Dustin J. Hartley,Enrique Montes de Oca +7 more
TL;DR: This paper studied communities of carabid beetles in residual forest patches along urban-suburban-rural gradients in three cities (Helsinki, Finland; Sofia, Bulgaria, and Edmonton, Canada) to examine their responses to urbanisation.