Terrestrial and stream biology
Repeated forest and below canopy surveys of 550 permanent 10-m radius
plots have been conducted 2016 and 2020. By linking these surveys with
concurrent Lidar scans and soil inventory, the ambition is to develop a
mechanistic link between forest growth, soil conditions, and modeled
groundwater pathways. A systematic survey of riparian plant communities
was conducted in 2013, depicting the relationship between vascular and
non-vascular plant diversity with stream size and groundwater flow paths
including 32 KCS sites (Kuglerová et al. 2014, Kuglerová et al. 2015).
Macroinvertebrate and stream microbial data have been collected
repeatedly from number of streams within the catchment and used in
different contexts (e.g., Göthe et al. 2013, Jonsson et al. 2017,
Burrows et al. 2017). Survival experiments on fish (Serrano et al. 2008)
and invertebrate population studies (Petrin et al. 2007) have been
conducted in several of the monitored streams. In addition, the main
stem of the Krycklan river network has been used as an unimpacted (by
timber floating) reference site in a number of studies of stream
hydrogeomorphology (Polvi et al. 2014), riparian plant diversity and
composition (Hasselquist et al. 2015), riparian nutrient cycling
(Hasselquist et al. 2017), instream ecosystem functioning (Frainer et
al. 2018), and biodiversity (Hasselquist et al. 2018). Since 2007, C7 is
also a part of national freshwater monitoring program under which
aquatic macroinvertebrates are annually collected to depict long-term
biodiversity trends.