Lifetime reproductive success and density-dependent, multi-variable resource selection

McLoughlin, Philip D.; Boyce, Mark S.; Coulson, Tim; Clutton‐Brock, Tim

doi:10.1098/rspb.2006.3486

Cited by 145 publications

(220 citation statements)

References 26 publications

Supporting

Mentioning

199

Contrasting

Unclassified

Order By: Relevance

“…This may reflect variation in the root causes of heterogeneity in each of these measures: for example, age at primiparity is expected to be strongly determined by conditions in the early part of life, such as density and weather in the year of birth (see Forchhammer et al 2001), while dominance is probably determined by the quality of habitat accessed and home range throughout life (see Clutton-Brock et al 1982). Lifetime measures of fitness have, in contrast, been shown to be determined by both early environment (Kruuk et al 1999b) and the strength of a hind's selection for Agrostis/Festuca grassland during her lifespan (McLoughlin et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Individual differences, density dependence and offspring birth traits in a population of red deer

et al. 2008

Self Cite

View full text Add to dashboard Cite

Variation between individuals is an essential component of natural selection and evolutionary change, but it is only recently that the consequences of persistent differences between individuals on population dynamics have been considered. In particular, few authors have addressed whether interactions exist between individual quality and environmental variation. In part, this is due to the difficulties of collecting sufficient data, but also the challenge of defining individual quality. Using a long-established study population of red deer, Cervus elaphus, inhabiting the North Block of the Isle of Rum, and three quality measures, this paper investigates how differences in maternal quality affect variation in birth body mass and date, as population density varies, and how this differs depending on the sex of the offspring and the maternal quality measure used. Significant interactions between maternal quality, measured as a hind's total contribution to population growth, and population density are reported for birth mass, but only for male calves. Analyses using dominance or age at primiparity to define maternal quality showed no significant interactions with population density, highlighting the difficulties of defining a consistent measure of individual quality.

show abstract

Section: Discussionmentioning

confidence: 99%

Individual differences, density dependence and offspring birth traits in a population of red deer

et al. 2008

Self Cite

View full text Add to dashboard Cite

show abstract

“…Habitat selection decisions can vary broadly among members of a population [5 -7], and this behavioural plasticity can yield different fitness payoffs [8]. Nevertheless, most habitat selection studies do not account for the complexity of the selection process (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, most habitat selection studies do not account for the complexity of the selection process (i.e. no multivariate assessment), or when they do, the fitness consequences of selection decisions are generally not assessed [3,8].…”

Section: Introductionmentioning

confidence: 99%

Avoidance of roads and selection for recent cutovers by threatened caribou: fitness-rewarding or maladaptive behaviour?

et al. 2012

View full text Add to dashboard Cite

The impact of anthropogenic disturbance on the fitness of prey should depend on the relative effect of human activities on different trophic levels. This verification remains rare, however, especially for large animals. We investigated the functional link between habitat selection of female caribou (Rangifer tarandus) and the survival of their calves, a fitness correlate. This top-down controlled population of the threatened forestdwelling caribou inhabits a managed forest occupied by wolves (Canis lupus) and black bears (Ursus americanus). Sixty-one per cent of calves died from bear predation within two months following their birth. Variation in habitat selection tactics among mothers resulted in different mortality risks for their calves. When calves occupied areas with few deciduous trees, they were more likely to die from predation if the local road density was high. Although caribou are typically associated with pristine forests, females selected recent cutovers without negative impact on calf survival. This selection became detrimental, however, as regeneration took place in harvested stands owing to increased bear predation. We demonstrate that human disturbance has asymmetrical consequences on the trophic levels of a food web involving multiple large mammals, which resulted in habitat selection tactics with a greater short-term fitness payoff and, therefore, with higher evolutionary opportunity.

show abstract

“…Many factors influence elk habitat selection, including food availability and quality, shelter, cover, predator avoidance, temperature, water availability, elevation, slope, and snow conditions [17][18][19]. Density of conspecifics may also influence selection [20,21]. Habitat use in relation to forest cover and productive foraging habitats has been well studied in elk [22][23][24][25][26][27]; however, selection of forest cover types in heterogeneous forest structures remains less clear.…”

Section: Introductionmentioning

confidence: 99%

Elk (Cervus elaphus) Seasonal Habitat Selection in a Heterogeneous Forest Structure

Popp

McGeachy

Hamr

2013

International Journal of Forestry Research

View full text Add to dashboard Cite

Seasonal habitat selection by the reintroduced Burwash elk population, approximately 30 km south of Sudbury, Ontario, has been analysed in order to assist in the development of future management. Twenty-five adult females were radio-collared and tracked 1-3 times a week for 3 years. The most prominent patterns included selection of intolerant hardwood forests (trembling aspen, white birch, and balsam poplar) during all seasons, while Great Lakes-St. Lawrence pines (white and red pine dominated stands) were used less than expected based on availability for all seasons. The selection patterns are likely associated with seasonal climatic conditions and forage preferences. Because the selection behaviours displayed here varied greatly from other elk habitat studies, it is suggested that managers consider the importance of population-specific habitat studies before developing related strategies.

show abstract

Lifetime reproductive success and density-dependent, multi-variable resource selection

Cited by 145 publications

References 26 publications

Individual differences, density dependence and offspring birth traits in a population of red deer

Individual differences, density dependence and offspring birth traits in a population of red deer

Avoidance of roads and selection for recent cutovers by threatened caribou: fitness-rewarding or maladaptive behaviour?

Elk (Cervus elaphus) Seasonal Habitat Selection in a Heterogeneous Forest Structure

Contact Info

Product

Resources

About