Assessing spider diversity in grasslands – does pitfall trap color matter? has been accepted in Journal of Arachnology.
Authors Möller M & Buchholz S
We analyzed effects of pitfall trap color (white, yellow, green, brown) on spider catches and found differences in alpha-diversity and one biological trait, namely hunting type. Attractiveness of different trap colors may arise due to differences in biological preconditions, albedo and microclimate which in turn can affect diversity and community structure of spiders. Trap color has a significant impact on spider catches and should be considered when planning surveys.
Working at the Charles Darwin Research Station again
Thanks to a research fellowship sponsored by the Schimper Stiftung I was able to go to the Galápagos in February. It was great to continue my work on the Scalesia restoration project in the highlands of Santa Cruz. After intensive work in the invertebrate lab we finished all spider and beetles identifications and counted all other invertebrates caught within the long-term monitoring. This program started in 2014 and invertebrates were caught in 34 plots using pitfall and Malaise traps. First results have been recently published but more detailed analyses will be available soon.
Scalesia pedunculata – an endemic tree in the Galápagos
Argiope spec. – a spider species commonly found in Scalesia trees
We finished the grasshopper sampling last week! More than 60 urban dry grasslands had been sampled during summer and we are now happy to have a first extensive dataset for the BIBS project. In all, we acoustically and visually assessed more than 4000 grasshopper individuals with 22 species – including some very interesting species such as Calliptamus italicus. We are looking forward to first functional diversity analyses in the next few weeks.
I am looking forward to spend a glorious time in Galápagos. I am going to participate in a research project for three months …
Over the last 10 years, the Galápagos National Park Directorate has carried out manual and chemical control of the invasive blackberry in the Scalesia forests at Los Gemelos on Santa Cruz. It is possible that this management has changed the structure of the forests which is supposed to affect invertebrates and birds that live there. To analyse effects of the management on plants, invertebrates and birds, a multi-taxon monitoring has been established. My part in this project is to evaluate the efficacy of the blackberry control measures and the impacts on non-target invertebrate species.
Beitrag zur Heuschreckenfauna ausgewählter Trockenrasen in Berlin has been accepted for publication in Märkische Entomologische Nachrichten.
Grasshoppers of several dry and semi dry grasslands of Berlin have been sampled in 2011 and 2012. The study summarises the results and discusses the records of Calliptamus italicus, Oedipoda caerulescens, Phaneroptera falcata and Sphingonotus caerulans.