The paper presents an analysis of problems of arable field weeds discussed by Polish authors in 2853 botanical scientific works published in the years 1870-2015. The research included both widely available publications and scientific works that appeared in Polish in regional and local journals, as well as the brief conference proceeding. The thematic structure of Polish studies on segetal weeds consists of several levels and includes eight main thematic groups and 51 subgroups. The review and multi-subject works were included in the ninth group. Taking into account the number of publications, main thematic groups are ranked as follows: (1) Weed flora and vegetation: structure, distribution and dynamics; (2) Weediness of different crop types, crop fields and fallow lands; (3) Interactions between weeds and the environment; (4) Biology and weed development; (5) Variability, taxonomy and weed diagnostics; (6) Research methodology; (7) Extinction and protection of weeds; (8) Weeds of archaeological localities.
For 12 years, Biodiversity: Research and Conservation has been publishing scientific articles in the area of taxonomy, chorology, ecology and nature protection. In accordance with the journal’s profile adopted from the very beginning, the subject of publications are plants in the wide, traditional perspective of this group of organisms, as well as fungi and lichens. Over 12 years, 345 scientific articles were published in the journal’s pages. The frequency in individual sections is as follows: Variability, taxonomy and phylogeny – 95, Chorology – 92, Ecology – 79, Nature protection – 51, other topics – 28. The authors of these articles are 468 scientists from 28 countries. To ensure a high level of publications, the submitted works are send for review. To date, 171 scientists specializing in biological diversity research participated in the review process.
Biodiversity: Research and Conservation, published at the Adam Mickiewicz University in Poznań (Poland), is open for the authors from the whole world and attracts a growing interest among researchers and readers. The data presented in this article show that this journal is read in a growing number of countries. It reaches readers mostly through its online version, but it is still published also in the traditional paper form, with the possibility of including colour photographs and figures.
The list of alien vascular plant species only temporarily occurring in Wielkopolska refers to the previously published list of native and permanently established plants. Together, these two lists document the vascular flora of this region at the beginning of the 21st century. The current list, like the previous one, is a result of critical analysis of both contemporary and historical data, collected since the beginning of the 19th century. All information accessible in herbarium collections, publications and unpublished materials was used. A critical analysis was conducted at the taxonomic, nomenclatural, chorological and habitat levels, based on the verification of negative information not supported by sufficient arguments. The list is presented in an alphabetical order. Information on each species includes: family affinity, life form, geographic and historic status. In cases particularly disputable, the standard characteristic of a species was supplemented with an additional commentary.