@article {50909,
	title = {Morphological determinants of carrier frequency signal in katydids (Orthoptera): a comparative analysis using biophysical evidence},
	journal = {Journal of Evolutionary Biology},
	year = {2017},
	month = {Apr-09-2018},
	abstract = {<p>Male katydids produce mating calls by stridulation using specialized structures on the forewings. The right wing (RW) bears a scraper connected to a drum-like cell known as the mirror and a left wing (LW) that overlaps the RW and bears a serrated vein on the ventral side, the stridulatory file. Sound is generated with the scraper sweeping across the file, producing vibrations that are amplified by the mirror. Using this sound generator, katydids exploit a range of song carrier frequencies (CF) unsurpassed by any other insect group, with species singing as low as 600 Hz and others as high as 150 kHz. Sound generator size has been shown to scale negatively with CF, but such observations derive from studies based on few species, without phylogenetic control, and/or using only the RW mirror length. We carried out a phylogenetic comparative analysis involving 94 species of katydids to study the relationship between LW and RW components of the sound generator and the CF of the male\&$\#$39;s mating call, while taking into account body size and phylogenetic relationships. The results showed that CF negatively scaled with all morphological measures, but was most strongly related to components of the sound generation system (file, LW and RW mirrors). Interestingly, the LW mirror (reduced and non-functional) predicted CF more accurately than the RW mirror, and body size is not a reliable CF predictor. Mathematical models were verified on known species for predicting CF in species for which sound is unknown (e.g. fossils or museum specimens).</p>
},
	doi = {10.1111/jeb.13179},
	url = {http://doi.wiley.com/10.1111/jeb.13179},
	author = {Fernando Montealegre-Zapata and Ogden, Jessica and Jonsson, Thorin and Soulsbury, Carl D.}
}
@article {47328,
	title = {Habitat- and matrix-related differences in species diversity and trait richness of vascular plants, Orthoptera and Lepidoptera in an urban landscape},
	journal = {Urban Ecosystems},
	year = {2017},
	month = {Jan-04-2018},
	abstract = {Urban growth is considered to be a major driver of environmental change. Urbanisation can affect urban biodiversity in different ways. So far, most studies focused on the impact of urbanisation on single taxa in one habitat type. In this study, we used data of species inventories and GIS-based landscape elements to examine the effects of habitat size and landscape composition on the species diversity of three taxonomic groups (vascular plants, Orthoptera and Lepidoptera) in meadows and ruderal sites in the urban region of Basel, Switzerland. We also related the responses of three species traits (body size, dispersal ability and food specialisation) to habitat size in Orthoptera and Lepidoptera. We found that species of the different taxonomic groups differed in their response to habitat size and landscape composition both in meadows and ruderal sites depending on the traits examined. The species richness of Orthoptera and Lepidoptera was positively related to meadow size but not to the size of ruderal sites, while the opposite was true for plants. For Lepidoptera in ruderal sites, the percentage cover of ruderal area in the closer surroundings was a better predictor of species richness than habitat size per se. To sustain high levels of urban biodiversity, we recommend that urban planners develop adequate management strategies to satisfy the different requirements of various taxonomic groups and to increase the quality of green sites surrounding the target habitat.},
	keywords = {Butterflies, grasshoppers, plant functional richness, species{\textendash}area relationship, urbanisation},
	issn = {1083-8155},
	doi = {10.1007/s11252-017-0662-5},
	url = {http://link.springer.com/10.1007/s11252-017-0662-5},
	author = {Melliger, Ramona Laila and Rusterholz, Hans-Peter and Baur, Bruno}
}
