https://researchdata.se/en/catalogue Search results en Here is presented all data and code used in the article "Strong diel variation in the activity of insect taxa sampled by Malaise traps" by Viktor Gårdman, Emme McDonald & Tomas Roslin. The sampling of insects through Malaise traps was conducted by the authors. 24 malaise traps were erected in a boreal forest in central Sweden (Lat. 60.024855, long. 17.751336) and emptied every second hour, with the exception of night (samplng events during night = 22:00, 02:00, 06:00) for five consecutive days between 14-19th of July 2022. The sampling design is described in further detail in the article (Fig. 1B). Insects were identified to taxonomic Family for Diptera, Coleoptera, and Hymenoptera, except for the superfamilies of Chalcidoidea and Cynipoidea (Hymenoptera). Chalcidoids and Cynipoids were only identified to the superfamily level, due to difficulties in assigning lower taxonomic levels without risking misidentification. Hemiptera was divided into taxonomic families for Heteroptera, and into suborders for Auchenorrhyncha and Sternorrhyncha. To simplify identification of a large group with similar morphology, all microlepidopteras were grouped as such with no further identification. Furthermore, to speed up the identification task, all insects not belonging to Diptera, Hymenoptera, Coleoptera, Lepidoptera or Hemiptera were identified to Order alone. The HRS_SpeciesData file contains information about each captured individual across all taxa for each 2 hour sampling interval during the five days of sampling. Dates are given as DD/M. TrapID refers to which of the 24 traps used the individual was found in. Time is given in hh:mm and refers to the time of sampling, Time_con refers to time in only hh, and time_Num shows time of day as a fraction between 0 (00:00) and 1 (23:59). The superfamily belonging for each taxon used is given. Note that for taxa were only taxonomic Order or Suborders are given, the superfamily column refers to this Order or Suborder. The HRS_EnviData file contains information about how many individual were captured at each timestep for the 17 most common taxa (appearing as >49 individuals or in >19 timesteps), along with weather covariates for each timestep. The weather covariates are average values from the five half hour measurements per sampling period (expect for 22:00-02:00 and 02:00-06:00 where n=9). The taxonomic columns follow the same principle as in HRS_SpeciesData, with an additional column of taxonomic Order. Times and date also follow the same principle as in HRS_SpeciesData. ID is a unique mix of Date and time, given as DDHH (Date, Hour). The emptying of trap at 20:00 on the 15h would have ID 1520. Temperature is given in degrees Celsius (°C), wind speed in m/s, cloud cover as a fraction between 0 (no cloud) and 1 (complete cloud cover), rain in mm, wind direction in cardinal directions, and relative humidity in %. Data on weather covariates was provided by the Swedish Transport Administration (https://www.trafikverket.se/) from weather station 327 Björklinge (Lat. 60.05042, long. 17.62149). All code was created using R version 4.4.0 and is presented through Rmarkdown Fri, 05 Dec 2025 12:45:22 GMT https://researchdata.se/en/catalogue/dataset/2025-211 https://researchdata.se/en/catalogue/dataset/2025-211 Swedish University of Agricultural Sciences Viktor Gårdman Emme McDonald Tomas Roslin SMTP data are occurrence data from a major inventory project targeting mainly flying insects, where Malaise traps were collecting on a large number of localities throughout Sweden during 2003-2006. The project is a part of the Swedish Taxonomy Initiative, and is currently run from Station Linné on Öland. The total catch has been estimated to approximately 80 million specimens, and sorting and identification is ongoing (and will continue for some time). Already after a small part of the catch has been identified to the species level, there are several hundreds of species new to the country or to science. Most of the material is kept in 96% alcohol, but certain groups are being dry-mounted in connection with identification, on pins or slides. The catch is part of the collections of the Swedish Museum of Natural History, and data are handled via the museum and the DINA system. The purpose of the inventory was primarily to find new species to the country and to science, and in general to acquire fresh material of poorly known insect groups for research projects within the Swedish Taxonomy Initiative framework, especially Hymenoptera and Diptera. However it turned out to be an interesting material also for mere faunistic mapping of the distribution of species within the country also for better known groups, and specimens and/or data can be used for investigating various ecological and other questions. Data is in the form of a sorting inventory or species lists. The difference is merely practical, since both concern identifications and record the occurrence of a certain taxon i a certain sample (representing a time interval and a particular locality). But sorting inventory deals with taxa on different levels which are continuously being identified by regular project staff for distribution to taxonomic specialists, while species identifications (and similar) represent the target level, and is performed by specialists for a particular group one by one (in single sub-projects if you will). Metadata (project description, trap description, trap localities and classification of what habitat they represent, temporal interval of single samples with occasional comments about physical quality (state of preservation) are detailed and constitute its own subset of data as well as a cornerstone in the occurrence data. Wed, 28 Oct 2015 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-5becml https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-5becml Swedish Museum of Natural History Kevin Holston Dave Karlsson To test the predation effects of crucian carp (Carassius carassius), nutrient concentrations, and Chironomidae community composition on the fatty acid export from aquatic ecosystems, we conducted a 25-day experiment across 20 1,500-L mesocosms covering a total phosphorus (TP) gradient of 20–1,000 µg/L. Our mesocosm facility was set-up in Lake Erken (59°51′N, 18°36′E) in Central Sweden, which is a mesoeutrophic lake with ambient concentrations of TP at 31 µg/L and total nitrogen (TN) at 0.7 mg/L (unpublished average of 25 years of monitoring). The mesocosms consisted of 20 white opaque, open-top cylinders with a flat bottom, made of high-density polyethylene that were 2 m deep and had a diameter between 92 and 101 cm. The floating mesocosms were attached to a dock close to the lakeshore. Please see the manuscript "The emergence of fatty acids—Aquatic insects as vectors along a productivity gradient" by Scharnweber et al (2019) for further information about the study behind this dataset. The dataset was originally published in DiVA and moved to SND in 2024. Mon, 15 Jul 2019 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/2024-269 https://researchdata.se/en/catalogue/dataset/2024-269 Uppsala University Kristin Scharnweber Occurrences in this dataset on Swedish Insects have been identified from specimens collected from for the Swedish Malaise Project (SMTP), an inventory funded by the Swedish Species Information Centre (ArtDatabanken). These records comprise the foundation for recent estimates on the size and composition of the Swedish insect fauna, published herein as sample-based datasets. Wed, 13 May 2020 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-h8ra7n https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-h8ra7n Station Linné Dave Karlsson Fredrik Ronquist Occurrences in this dataset on Swedish Insects have been identified from specimens collected from for the Swedish Malaise Project (SMTP), an inventory funded by the Swedish Species Information Centre (ArtDatabanken). These records comprise the foundation for recent estimates on the size and composition of the Swedish insect fauna, published herein as sample-based datasets. Wed, 13 May 2020 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-n9qrv4 https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-n9qrv4 Station Linné Dave Karlsson Fredrik Ronquist Occurrences in this dataset on Swedish Insects have been identified from specimens collected from for the Swedish Malaise Project (SMTP), an inventory funded by the Swedish Species Information Centre (ArtDatabanken). These records comprise the foundation for recent estimates on the size and composition of the Swedish insect fauna, published herein as sample-based datasets. Wed, 13 May 2020 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-nw85cf https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-nw85cf Station Linné Dave Karlsson Fredrik Ronquist Occurrences in this dataset on Swedish Insects have been identified from specimens collected from for the Swedish Malaise Project (SMTP), an inventory funded by the Swedish Species Information Centre (ArtDatabanken). These records comprise the foundation for recent estimates on the size and composition of the Swedish insect fauna, published herein as sample-based datasets. Wed, 13 May 2020 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-q6653a https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-q6653a Station Linné Dave Karlsson Fredrik Ronquist Occurrences in this dataset on Swedish Insects have been identified from specimens collected from for the Swedish Malaise Project (SMTP), an inventory funded by the Swedish Species Information Centre (ArtDatabanken). These records comprise the foundation for recent estimates on the size and composition of the Swedish insect fauna, published herein as sample-based datasets. Wed, 13 May 2020 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-rs389z https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-rs389z Station Linné Dave Karlsson Fredrik Ronquist Occurrences in this dataset on Swedish Insects have been identified from specimens collected from for the Swedish Malaise Project (SMTP), an inventory funded by the Swedish Species Information Centre (ArtDatabanken). These records comprise the foundation for recent estimates on the size and composition of the Swedish insect fauna, published herein as sample-based datasets. Wed, 13 May 2020 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-s5y2mb https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-s5y2mb Station Linné Dave Karlsson Fredrik Ronquist Occurrences in this dataset on Swedish Insects have been identified from specimens collected from for the Swedish Malaise Project (SMTP), an inventory funded by the Swedish Species Information Centre (ArtDatabanken). These records comprise the foundation for recent estimates on the size and composition of the Swedish insect fauna, published herein as sample-based datasets. Wed, 13 May 2020 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-u7dd6f https://researchdata.se/en/catalogue/dataset/gbif-sweden-10-15468-u7dd6f Station Linné Dave Karlsson Fredrik Ronquist