TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Kärcher, Oskar
A1  - Hering, Daniel
A1  - Frank, Karin
A1  - Markovic-Bredthauer, Danijela
T1  - Freshwater species distributions along thermal gradients
JF  - Ecology and Evolution
N2  - The distribution of a species along a thermal gradient is commonly approximated by a unimodal response curve, with a characteristic single optimum near the tempera‐ture where a species is most likely to be found, and a decreasing probability of occur‐rence  away  from  the  optimum.  We  aimed  at  identifying  thermal  response  curves  (TRCs) of European freshwater species and evaluating the potential impact of climate warming across    species, taxonomic groups, and   latitude. We   first   applied generalized additive  models  using  catchment‐scale  global  data  on  distribution  ranges  of  577  freshwater  species  native  to  Europe  and  four  different  temperature  variables  (the  current annual     mean    air/water temperature and   the   maximum air/water temperature of the warmest month) to describe species TRCs. We then classified TRCs into one of eight curve types and identified spatial patterns in thermal responses. Finally, we in‐tegrated empirical TRCs and the projected geographic distribution of climate warm‐ing  to  evaluate  the  effect  of  rising  temperatures  on  species’  distributions.  For  the  different temperature variables, 390–463 of  577   species (67.6%–80.2%) were    char‐acterized by  a  unimodal TRC.    The   number of  species with   a  unimodal TRC   decreased from central toward northern and southern Europe. Warming tolerance (WT =   maxi‐mum temperature of occurrence—preferred temperature) was higher at higher lati‐tudes.   Preferred   temperature   of   many   species   is   already   exceeded.   Rising   temperatures will affect most Mediterranean species. We demonstrated that fresh‐water    species’ occurrence probabilities are   most    frequently unimodal. The   impact of the global climate warming on species distributions is species and latitude depend‐ent.   Among the   studied taxonomic groups, rising    temperatures will   be   most    detri‐mental to  fish.    Our   findings support the   efforts of  catchment‐based freshwater management and conservation in the face of global warming.
KW  - Climate change
KW  - European freshwater
KW  - Generalized additive models
KW  - Preferred temperature
KW  - Safety margin
Y1  - 2018
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:959-opus-38281
U6  - https://doi.org/10.1002/ece3.4659
DO  - https://doi.org/10.1002/ece3.4659
VL  - 9
IS  - 1
SP  - 111
EP  - 124
ER  -