Author:
Wereszczuk Anna,Hofmeester Tim R.,Csanády Alexander,Dumić Tomislav,Elmeros Morten,Lanszki József,Madsen Aksel B.,Müskens Gerard,Papakosta Malamati A.,Popiołek Marcin,Santos-Reis Margarida,Zuberogoitia Iñigo,Zalewski Andrzej
Abstract
AbstractMany species show spatial variation in body size, often associated with climatic patterns. Studying species with contrasting geographical patterns related to climate might help elucidate the role of different drivers. We analysed changes in the body mass of two sympatric medium-sized carnivores—pine marten (Martes martes) and stone marten (Martes foina)—across Europe over 59 years. The body mass of pine marten increased with decreasing latitude, whereas stone marten body mass varied in a more complex pattern across its geographic range. Over time, the average body mass of pine martens increased by 255 g (24%), while stone marten by 86 g (6%). The greatest increase of body mass along both martens’ geographic range was observed in central and southern Europe, where both species occur in sympatry. The body mass increase slowed down over time, especially in allopatric regions. The average pine/stone marten body mass ratio increased from 0.87 in 1960 to 0.99 in 2019, potentially strengthening the competition between them. Thus, a differential response in body size to several drivers over time might have led to an adaptive advantage for pine martens. This highlights the importance of considering different responses among interacting species when studying animal adaptation to climate change.
Publisher
Springer Science and Business Media LLC
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