Winter Activity Patterns of Two Radio-Marked Beaver Colonies

Lancia, Richard A.; Dodge, Wendell E.; Larson, Joseph S.

doi:10.2307/1380264

Cited by 28 publications

(11 citation statements)

References 15 publications

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“…beavers drop their body temperature between 1.0 and 2.5°C and heat up again in the den or on the bank in more or less regular cooling-heating cycles (MacArthur andDyck 1990S mith et al 1991;Dyck and MacArthur 1992; this study). In extreme coId, activity falls to very low levels and beavers eonfine themselves to the den and its immediate surroundings (Novakowski 1967;Aleksiuk and Cowan 1969;Lancia et al 1982).…”

Section: Time A/localion and Oplimization Crilerionmentioning

confidence: 99%

Territoriality and time budgets in beavers during sequential settlement

Nolet

Rosell²

1994

Can. J. Zool.

106

102

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OLET. B.A. • and ROSELL, F. 1994. Tenitoriality and time budgets in beavers during sequentiat settlement. Can. J. Zool. 72: 1227-1237. Beavers (Castor fiber) were sequentialJy released into a previously unoccupied area. The settlement of the animals approximated an ideal despotic distribution: they successively settled in rich habitat and then in poor habiiat, and then became tloaters. This panem is regarded as evidence that territorial behavior limited density. The early arnvals showed aseasonal differenee in territory size (small in winter, large in late spring and summer). which was expe.. cte'd ·from optimal lerritory size theory but which was not found in later arrivals. In the first 2 years, the beavers were swimming very large distances (up to 20.0 km per night), and were apparently undergoing a long-tenn decline in body condition. Body temperature decreased during sw'inuning, especially in winter (daily amplitude 2.04OC). Each year. winter lerritories were about the size (7.9 :t 0.9 (SE) km, including 3.0 ± 0.4 km of wooded banks) that beavers could patrol daily without losing body condition. 1be number of letritories established at any one time during the 5 years of study was only halfthe canying capacity calculated on the basis of the cunent length of wooded banks within territories, in accordance with the p~~tion for sequential settlement in~inear habitats. However, extensive no-man 's-Iand was not present between territories, b~~early anivals claimed larger territories than later ones. Social and thennoregulatory factors seem to play an important role in detennining the costs of temtory defense. and hence tenitory size. Overexploitation of the beaver 1 s main food source, witlow rie de la taille optimale des tenitoUes" mais ce pattem ne s'est pas repete chez les colonisateurs plos tardifs. Au cours des 2 premieres ann6es, les castors paroouraient de tres grandes distances (jusqu'a 20,0 km par nuit) et semblaient prets asubir une deterioration along tenne de leur condition physique. La temperature du corps baissait au cours de la nage, surtout en hiver (amplitude quotidienne de 2,04°C). Chaque annee, les territoires d'hiver avaient a peu pres les dimensions (7.9 ± 0,9 (erreur standard) km, dont 3,0 :t 0,4 km de berges boisees) que les castors pouvaient patfouiIler chaque jour sans subir de deterioration de leur condition physique. Le nomb...

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Section: Time A/localion and Oplimization Crilerionmentioning

confidence: 99%

Territoriality and time budgets in beavers during sequential settlement

Nolet

Rosell²

1994

Can. J. Zool.

106

102

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“…Novakowski (1967) hypothesized that beaver caches in northern latitudes are not calorically sufficient to meet colony energy requirements, and that methods of energy conservation such as lipolysis (Aleksiuk, 1970), decrease in activity (Lancia et al, 1982), and core body temperature depression are necessary for winter survival. found decreases in overwinter body temperature of yearling and adult beavers, but not in kits.…”

Section: Introductionmentioning

confidence: 99%

The role of forage availability on diet choice and body condition in American beavers (Castor canadensis)

et al. 2013

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“…evolution of woodcutting behaviour in early pliocene beaver driven by consumption of woody plants tessa plint 1,2* , Fred J. Longstaffe 1 , Ashley Ballantyne 3 , Alice Telka 4,7 & Natalia Rybczynski 5,6 Modern beavers (Castor) are prolific ecosystem engineers and dramatically alter the landscape through tree harvesting and dam building. Little is known, however, about the evolutionary drivers of their woodcutting behaviour.…”

mentioning

confidence: 99%

“…Modern beavers also are known to feed on trees. This food source is particularly important for northern populations that survive freezing winters, subsisting on their underwater caches of leafy branches 5,6 .…”

mentioning

confidence: 99%

Evolution of woodcutting behaviour in Early Pliocene beaver driven by consumption of woody plants

Plint

Longstaffe

Ballantyne

et al. 2020

Sci Rep

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Here, we present stable carbon and nitrogen isotope data for Pliocene-age (i) plant macrofossils and (ii) bone collagen from High Arctic Dipoides sp. subfossil remains. The specimens originate from a peat deposit at the Beaver Pond fossil site, located on Ellesmere Island (locally known as Umingmak Nuna, meaning "land of muskoxen"), situated within the Canadian Arctic Archipelago (78° 33′ N, 82° 25′ W) (Fig. 1). We reconstruct High Arctic Dipoides sp. palaeodiet within the context of coeval terrestrial and freshwater plant macrofossil remains excavated from the same ~ 4 Ma old peat layer. The Beaver Pond site provides a very rare opportunity for such a palaeodiet reconstruction using coeval herbivore and plant remains.

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Winter Activity Patterns of Two Radio-Marked Beaver Colonies

Cited by 28 publications

References 15 publications

Territoriality and time budgets in beavers during sequential settlement

Territoriality and time budgets in beavers during sequential settlement

The role of forage availability on diet choice and body condition in American beavers (Castor canadensis)

Evolution of woodcutting behaviour in Early Pliocene beaver driven by consumption of woody plants

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