DOI: 10.13148/bffwm8
title: Abiotic and biotic data of the rivers Pinka and Lafnitz 2012 - 2014

description: River morphology, field study. Riparian vegetation, field study. Stream water temperature, oberservations and predictions. Near stream microclimate, oberservations and predictions. Fish species and assemblages, sampling. Benthic invertebrate abundance and diversity, sampling. Initially only stream water observations, predictions of the river Pinka and corresponding input data for extreme heat wave events used in Trimmel et al. (2016b) are available for download. Other parts of the data set may be included later after they have been published.
description: Commonly used series of methods steps regarding fish, macro invertebrates, angiosperms, invasive species (e.g. sampling, identification, data management). Fish: covered timeframe: year from 1991 to 2013 historical data: yes palaeo data: no season: spring, summer, autumn temporal resolution/frequency of sampling: per day time series data: yes sample specification: quantitative (abundance data), qualitative, presence/absence replicate samples: yes number of samples: 626. Specification of method(s) used for sampling and sorting fish: Allover, several transects at a total of 17 stretches (626 sampling points in the Lafnitz and 271 in the Pinka) were recorded to characterize the abiotic meso habitats. Beside the abiotic characterization of the habitats, point-abundance electric fish samplings (n = 35) were performed to record the occurring fish species and their life stages in 2012 and October 2013. To describe and analyse temporal trends of fish communities dataset were assembled from different sources (IHG DB) and ATFIBASE database (BAW Scharfling). Additionally, fish data from the river Lafnitz was provided by Gerhard Woschitz and Georg Wolfram. Altogether, 52 fish sampling events from external sources were included in the dataset for this study, covering the period from 1991 to 2013 (Guldenschuh 2014). sample type: habitat sampling 2012 and 2013, additional historic quantitative and qulitative date from 1991 on. specific sample location: all river, from upstream down to the hungarian border. Macro invertebrates: covered timeframe: year from 2012 to 2014 historical data: no palaeo data: no season: spring, summer, autumn temporal resolution/frequency of sampling: 4 times in three years time series data: no. Specification of method(s) used for sampling and sorting macro invertebrates: In May and July 2012 lithal substrates were sampled according to the Multi-Habitat-Sampling approach (AQEM-Consortium, 2002). Twenty pooled samples were taken at each investigation site, whereby each sample represented a 5% share of available habitats in the river section. Habitat structures directly linked to the riparian vegetation such as large woody debris structures (LWD) were sampled separately. To ensure statistical significance, at least parts were measured to analyse abundance and biomass of the invertebrate fauna per square meter. In November 2012 and March 2014, single-habitat-samples per transects were taken. At least 20 sampling units were taken at each site and choriotope type as well as flow velocity (bottom; near and at 40% of water depth) was documented. In addition, adults were collected by light traps and sweeping net to get deeper insights in biodiversity issues. Angiosperms: covered timeframe: year from 2013 to 2013 historical data: no season: summer time series data: no sample specification: quantitative (abundance data) number of samples: 1. Specification of method(s) used for sampling and sorting for angiosperms: Definition of areas of same vegetation composition by aerial photographs. Overall height, density and dominating species are recorded in field. specific sample location: riparian vegetation in a 50 m buffer orographically left and right of the river bank from source to the Austrian border. Invasive species: covered timeframe: year from 2013 to 2013 historical data: no season: summer time series data: no.