Demography of Peromyscus maniculatus populations in seral stages of coastal coniferous forest in southeast Alaska

1981 ◽  
Vol 59 (6) ◽  
pp. 1045-1061 ◽  
Author(s):  
Beatrice Van Horne
Keyword(s):  
Peromyscus Maniculatus ◽  
Adult Population ◽  
Survival Rates ◽  
Coniferous Forest ◽  
Habitat Type ◽  
High Density ◽  
Adult Males ◽  
Southeast Alaska ◽  
High Density Population ◽  
Density Population

Population dynamics of Peromyscus maniculatus hylaeus in seral stages of spruce–hemlock forest in southeast Alaska were investigated during three consecutive reproductive seasons. Two types of high density population were observed. Breeding activity in both types ended early in the season. The first type consisted of a largely adult population with high year to year constancy in overall density and associated breeding and survival parameters. Adult female survival was high. Adult breeding males were heavy. Survival of pretrappable animals was low, although growth and survival rates of juveniles were similar to or higher than those in the other populations.The second type of high density population occurred on two grids in late summer of 1979, and consisted largely of nonbreeding juvenile young of the year. It resulted from unusually early breeding by a small population of overwintered adults. Despite large differences in habitat type and population density, home range size was similar between years and grids. Adult males had larger home ranges than did adult females or juveniles.

Seasonal home range size and philopatry in two northern white-tailed deer populations

2000 ◽  
Vol 78 (11) ◽  
pp. 1930-1940 ◽  
Author(s):  
Louis Lesage ◽  
Michel Crête ◽  
Jean Huot ◽  
A Dumont ◽  
Jean-Pierre Ouellet
Keyword(s):  
Home Range Size ◽  
High Density ◽  
Home Ranges ◽  
Low Density ◽  
Adult Males ◽  
High Density Population ◽  
Wintering Areas ◽  
N 93 ◽  
Density Population ◽  
Competition For Resources

From 1994 to 1997, we compared summer and winter space utilisation by two white-tailed deer (Odocoileus virginianus) populations wintering in adjacent areas in southeastern Quebec characterised by deep snow cover. One population lived at low density (10 deer/km2) with access to abundant forage in winter (127 000 twigs/ha), whereas for the other, high-density population (20 deer/km2), forage availability was reduced (68 000 twigs/ha). Because of intraspecific competition for resources, we predicted that deer in the high-density population would have smaller home ranges, would exhibit greater philopatry, and would be more likely to disperse. Deer from both populations occupied summer home ranges that were similar in size (1182 ha for adult males; 1102 ha for adult females; 6033 ha for yearling males; 2528 ha for yearling females) but much larger than home ranges observed elsewhere in North America. The high-density population showed a higher level of philopatry than the low-density population during winter but not during summer. Most deer remained migratory during the study (n = 93) but 4 of the 5 that dispersed were from the high-density population. We speculate on the ability of white-tailed deer populations facing severe winters to adapt to using large home ranges in summer. Our results shed light on how wintering areas appear and expand.

Life-support Training in High-density Population Centers

1978 ◽  
Vol 18 (11) ◽  
pp. 777-780
Author(s):  
WALTER F. PIZZI ◽  
MARTIN I. HASSNER ◽  
JANE E. ST. CLAIR ◽  
JAMES N. OSS
Keyword(s):  
Life Support ◽  
High Density ◽  
High Density Population ◽  
Density Population

An experimental study of the behavior of blue grouse (Dendragapus obscurus). I. Differences between the founders from three populations

1975 ◽  
Vol 53 (9) ◽  
pp. 1222-1237 ◽  
Author(s):  
Arthur T. Bergerud ◽  
H. Dennis Hemus
Keyword(s):  
Vancouver Island ◽  
Mirror Image ◽  
High Density ◽  
The Other ◽  
Low Density ◽  
Single Population ◽  
High Density Population ◽  
Dendragapus Obscurus ◽  
Field Workers ◽  
Density Population

In 1970 the authors compared the behavior of two low-density populations of blue grouse (Dendragapus obscurus) with the behavior of a high-density population on Vancouver Island. They then introduced individuals from these populations onto four islands and compared the behavior of these founders in 1971 and 1972.One island received founders from all three populations, while the other three islands each received founders from a single population. Birds from two low-density populations were quite observable, and displayed frequently when approached by field workers, both at their capture sites on Vancouver Island and in different habitats on the release sites on islands. The high-density population was much less observable, and displayed less frequently than did the two low-density populations, both at the capture sites and on the release islands. Male founders from the low-density populations were more aggressive in interacting with their mirror image than were males from the high-density population. Male founders from the high-density population dispersed less from the release sites, had smaller territories, and settled closer together than did males from the two low-density populations. These findings are consistent with the view that animals have a form of behavior that spaces them out as numbers rise, and so prevents unlimited increase in numbers.

Spacing of female kin in Columbian ground squirrels (Spermophilus columbianus)

1989 ◽  
Vol 67 (1) ◽  
pp. 91-95 ◽  
Author(s):  
Wendy J. King
Keyword(s):  
Ground Squirrels ◽  
High Density ◽  
High Density Population ◽  
Spermophilus Columbianus ◽  
Close Relatives ◽  
Columbian Ground Squirrels ◽  
Density Population

The dispersion of matrilineally related females was examined within a high-density population of Columbian ground squirrels (Spermophilus columbianus) in southwestern Alberta. Females tended to nest near their natal site when no other female occupied it. Breeding females spaced themselves evenly so that close relatives formed intact groups but not dense clusters. The kin group was typically composed of a mother with one or two daughters that were nonlittermate sisters. Females appeared to be attracted to natal areas and the resources they contained, perhaps burrows.

Ranging behaviour of roe deer in an experimental high-density population: Are females territorial?

2012 ◽  
Vol 335 (12) ◽  
pp. 735-743 ◽  
Author(s):  
Marie-Line Maublanc ◽  
Eric Bideau ◽  
Romain Willemet ◽  
Clara Bardonnet ◽  
Georges Gonzalez ◽  
...  
Keyword(s):  
Roe Deer ◽  
High Density ◽  
High Density Population ◽  
Ranging Behaviour ◽  
Density Population

Demography of the Hadza, an increasing and high density population of savanna foragers

1992 ◽  
Vol 89 (2) ◽  
pp. 159-181 ◽  
Author(s):  
Nicholas G. Blurton Jones ◽  
Lars C. Smith ◽  
James F. O'Connell ◽  
Kristen Hawkes ◽  
C. L. Kamuzora
Keyword(s):  
High Density ◽  
High Density Population ◽  
Density Population

scholarly journals Physical condition of red deer in a high density population

1996 ◽  
Vol 41 ◽  
pp. 93-105 ◽  
Author(s):  
Ryszard Dzięciołowski ◽  
Joanna Babińska-Werka ◽  
Michał Wasilewski ◽  
Jacek Goszczyński
Keyword(s):  
Physical Condition ◽  
Red Deer ◽  
High Density ◽  
High Density Population ◽  
Density Population

Dispersal of juvenile collared lemmings (Dicrostonyx groenlandicus) in a high-density population

1998 ◽  
Vol 76 (12) ◽  
pp. 2255-2261 ◽  
Author(s):  
Gwylim S. Blackburn ◽  
Deborah J. Wilson ◽  
Charles J. Krebs
Keyword(s):  
High Density ◽  
High Density Population ◽  
Dicrostonyx Groenlandicus ◽  
Density Population
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