ZooKeys 500: traditions and innovations hand-in-hand servicing our taxonomic community

On 27th of April 2015 ZooKeys published its jubilee issue 500. It has been exactly 28 months since we published our semiquincentennial issue (Penev et al. 2012) and made a review of the journal’s progress since its establishment in 2008. Now, reaching this milestone makes us cast a look back to see what we have achieved in the passed two and ⅓ years.

On 27 th of April 2015 ZooKeys published its jubilee issue 500. It has been exactly 28 months since we published our semiquincentennial issue (Penev et al. 2012) and made a review of the journal's progress since its establishment in 2008. Now, reaching this milestone makes us cast a look back to see what we have achieved in the passed two and ⅓ years.

And…we have a lot to be proud of !
From its start in July 2008 through April 2015, the journal published altogether 2436 articles and 65942 pages. The number of published articles continued to grow gradually over the last two years (see Fig. 1 Launched as a fast-line publishing journal, in spite of the great increase in submissions, the average peer-review and production time remained within the timeframes of 2012, namely approximately 3 months from submission to publication. The actual rejection rate based on evaluation of all submitted versus published articles is 28%. Over the last two years, ZooKeys continued to increase its role in taxonomy sustained by implementing new publication models and technologies. In a race with the rapid destruction of ecosystems on the planet, the journal is seen as the best venue for describing the world's biodiversity at a fast pace. Since 2008 until now, ZooKeys published altogether 5973 new taxa, of which 5565 new species or subspecies, 382 genera and 26 families (see also Table 1). It made its way to the top 10 journals publishing the greatest number of new taxa in Zoology reaching currently a second place in Thomson Reuters' Index of Organism names right after Zootaxa. This accounts for 5.55% of all newly described animal taxa. In terms of nomenclature proposals it also ranks second with a share of 6.15% of all published acts (according to Thomson Reuters' ION, accessed 18 April 2015). The journal is also in Zoological Record's top ten publications containing new taxa with the publications of Marsh et al. (2013) and Fernández-Triana et al. (2014) on braconid wasps from Costa Rica, ranked respectively second and ninth.  A number of technological and administrative measures were undertaken in the last two years to advance even more our journal's position in the global publishing market. These were not left unnoticed by the scholarly community, data registries and leading indexers of scholarly literature. The ZooKeys impact factor, as evaluated by Thomson Reuters' Journal Citation Reports for 2014, continue to grow and from In February 2013, Pensoft announced the integration of all its journals with CLOCKSS [Controlled LOCKSS (for Lots of Copies Keep Stuff Safe)] archive, which guaranteed their long-term preservation, integrity and perpetuity. As an added benefit, Pensoft became a partner of the Global LOCKSS Network supporting libraries and their local collections.
Being the first taxonomic journal to promote and implement data publishing in its routine workflow (Chavan and Penev 2011), over the last two years ZooKeys strengthened its leading position in this field and was recognised as the most reliable venue for publication, integration and dissemination of taxonomic data. From November 2011 when the first data paper was published in the journal (Narwade et al. 2011) until now, their number increased to 37 covering various aspects of biodiversity knowledge.
A major step towards strengthening the journal position was undertaken in December 2014 when ZooKeys moved on to a new technologically advanced publishing platform with several innovative features that better visualise published content and maximizes its re-use by readers. These include a navigation panel that allows key text elements, such as figures and tables to be downloaded individually. Other key features include visualisation of occurrence data on interactive Google map, Taxon Name Profile, and Reference finder (http://refindit.org). Besides, a new article level metrics allowing scoring the number of user's visits by article format, as well as the number of views of each individual figure and table was introduced.
In November 2013, with the publication of issue 346 ZooKeys initiated an automated registration of new taxa with ZooBank. This was achieved through a serverto-server communication from the journal to ZooBank and back, using the TaxPub schema, which is an extension to the Journal Tag Publishing Suite (JATS) of the National Library of Medicine (NLM) (Catapano 2010. By doing this, ZooKeys became the first journal ever to implement such work flow in its publishing system and one of the first taxonomic journals accepted for archiving in Pub-MedCentral. Next to come is pipelining registration and publication of other types of nomenclatural acts. The last two years will also be recalled with the publication of several landmark thematic monographs and conference proceedings, just to mention a few: Contribu- Quite a number of interesting zoological discoveries were announced in the journal and attracted large audiences and considerable media interest (see also Tables 2 and 3). Among those, worth mentioning: a new procyonid mammal, the Olinguito, from the Andes ); a new genus of monk seals from the Caribbean Sea (Scheel et al. 2014); a new genus and several new species of bats from Africa and the Neotropics (Reeder et al. 2013;Velazco and Patterson 2014); a new subgenus and four new species of electric fishes from the Amazon and Congo river basins (Sullivan et al. 2013;Lavoué and Sullivan 2014); a new genus and species of rove beetles collected by Charles Darwin 180 years ago and published on his birthday (Chatzimanolis 2014); a new genus and species of ancient clams found in the depths of the Arctic Ocean (Valentich-Scott et al. 2014) and many others.
Shortly after the erection of the method of rapid and en masse descriptions of new taxa, often called "turbo-taxonomy" in 2012, ZooKeys served as an experimental testbed for the concept (Riedel et al. 2013. Furthermore, entirely new methodological approaches in taxonomy were introduced in the journal, among others a new LEGO pinned insect manipulator (IMp) (Dupont et al. 2015); a new illustration technique allowing integration of scanning electron microscope images into an interactive rotatable model (rSEM) (Akkari et al. 2013); a new set-up for production of highly detailed quality pictures of pinned insects (Brecko et al. 2014). The journal success wouldn't be possible without the great support of the zoological community. We deeply appreciate the help received from our most active authors, reviewers and editors!