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31 results for “Phenological mismatch”
Colour moult phenology and camouflage mismatch in polymorphic populations of Arctic foxes
<div> <div> <div> <div> <p>Species that seasonally moult from brown to white to match snowy backgrounds become conspicuous and experience increased predation risk as snow cover duration declines. Long-term adaptation to camouflage mismatch in a changing climate might occur through phenotypic plasticity in colour moult phenology and or evolutionary shifts in moult rate or timing. Also, adaptation may include evolutionary shifts towards winter brown phenotypes that forgo the winter white moult. Most studies of these processes have occurred in winter white populations, with little attention to polymorphic populations with sympatric winter brown and winter white morphs. Here, we used remote camera traps to record moult phenology and mismatch in two polymorphic populations of Arctic foxes in Sweden over 2 years. We found that the colder, more northern population moulted earlier in the fall and later in the spring. Next, foxes moulted earlier in the fall and later in the spring during colder and snowier years. Finally, white foxes experienced relatively low camouflage mismatch while blue foxes were mismatched against snowy backgrounds most of the fall through the spring. Because the brown-on-white mismatch imposes no evident costs, we predict that as snow duration decreases, increasing blue morph frequencies might help facilitate species persistence.</p> </div> </div> </div> </div>
Data from: Phenological mismatch drives selection on elevation, but not on slope, of breeding time plasticity in a wild songbird
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Disconnects between ecological theory and data in phenological mismatch research
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Data from: Population growth in a wild bird is buffered against phenological mismatch
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Colour moult phenology and camouflage mismatch in polymorphic populations of Arctic foxes
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Data from: When spring ephemerals fail to meet pollinators: mechanism of phenological mismatch and its impact on plant reproduction
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Data from: Phenological mismatch and ontogenetic diet shifts interactively affect offspring condition in a passerine
Climate change may cause phenological asynchrony between trophic levels, which can lead to mismatched reproduction in animals. Although indirect effects of mismatch on fitness are well described, direct effects on parental prey choice are not. Moreover, direct effects of prey variation on offspring condition throughout their early development are understudied. Here, we used camera trap data collected over 2 years to study the effects of trophic mismatch and nestling age on prey choice in pied flycatchers (Ficedula hypoleuca). Furthermore, we studied the effect of mismatch and variation in nestling diet on offspring condition. Both experimentally induced and natural mismatches with the caterpillar peak negatively affected absolute and relative numbers of caterpillars and offspring condition (mass, tarsus and wing length) and positively affected absolute and relative numbers of flying insects in the nestling diet. Feeding more flying insects was negatively correlated with nestling day 12 mass. Both descriptive and experimental data showed preferential feeding of spiders when nestlings were <7 days old. Receiving more spiders during this phase was positively correlated with tarsus growth. These results highlight the need for a more inclusive framework to study phenological mismatch in nature. The general focus on only one prey type, the rarity of studies that measure environmental abundance of prey, and the lack of timing experiments in dietary studies currently hamper understanding of the actual trophic interactions that affect fitness under climate change.
Data from: Density‐dependent and phenological mismatch effects on growth and survival in lesser snow and Ross's goslings
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Data from: Phenological mismatch and ontogenetic diet shifts interactively affect offspring condition in a passerine
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Lack of phenological shift leads to increased camouflage mismatch in mountain hares
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Data from: Mismatches between breeding phenology and resource abundance of resident alpine ptarmigan negatively affect chick survival
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