Figure legends
Fig. 1. Map showing the location of regions (Northern sites = Uppland,
Southern coastal sites = Kalmar, Southern inland sites = Halland). For
site information see SI Table 1.
Fig. 2. Relative abundance of wolf spider species in inland and coastal
sites in Halland/Kalmar (S) and in Uppland (N).
Fig. 3. Relative abundances of prey catches in SLAM-traps, separated by
wrack occurrence, region (south = Kalmar, north = Uppland) and season (A
= August, S = July). Detritivore flies include Sepsidae, Sphaeroceridae
and Coelopidae. Other flying prey include Hymenoptera and Lepidoptera
but also a range of terrestrial Diptera.
Fig. 4. Relative contents of spider guts from sites with or without
wrack, and in the northern (Uppland) or southern (Kalmar) region. Other
detritivore flies include those connected to wrack, such as
Anthomyiidae, Coelopidae, Ephydridae and Sepsidae. Other large flies
include Dolichopodidae, Dryomyzidae, Empididae, Fannidae, Heleomyzidae,
Hybotidae, Muscidae, Rhinophoridae, Scatophagidae, Sciomyzidae,
Syrphidae, Tabanidae and Tachinidae. Other small flies include
Acroceridae, Agromyzidae, Asteiidae, Canacidae, Carnidae, Chamaemyiidae,
Chloropidae, Lonchopteridae, Opomyzidae, Phoridae, and Pipunculidae.
Other Nematocera include Cecidomyiidae, Ceratopogonidae, Keroplatidae,
Limoniidae, Mycetophilidae, Psychodidae, Scatopsidae and Sciaridae.
Fig. 5. Species accumulation curves (±S.D.) relative to the number of
sampled spiders for northern sites (Uppland) and southern sites
(Kalmar), with or without wrack accumulation.
Fig. 6. Individual diet similarity estimated as Jaccards similarity
index (±S.E.) separated for region (N=Uppland, S=Kalmar) and wrack
presence. The diet similarity was estimated between all pairs of
individuals (red) or between pairs of the same species (white) and when
prey where included at the species (circles) or family (squares) level.
N-values refer to the number of pairs of individuals.
Figure 1