Effects of intensive harvesting on moose reproduction

Laurian, C; Ouellet, Jean‐Pierre; Courtois, Réhaume; Breton, Laůrier; St-Onge, Sylvain

doi:10.1046/j.1365-2664.2000.00520.x

Cited by 62 publications

(57 citation statements)

References 37 publications

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“…This is despite the fact that many researchers have highlighted the influence that selective hunting may have on the population dynamics of the system they are studying (Ginsberg & MilnerGulland 1994;Laurian et al 2000) and are, thus, aware of the bias that exists in data sourced from hunts.…”

Section: Introductionmentioning

confidence: 84%

“…Bias is widespread in most ecological data, especially those collected by harvesting or hunting which are, by nature, selective (Ginsberg & Milner-Gulland 1994;Noss 1999;Laurian et al 2000). Although introduced bias is routinely corrected for in fisheries systems (Murphy & Willis 1996), similar bias is often ignored in terrestrial systems.…”

Section: Discussionmentioning

confidence: 99%

“…In natural systems there is selection pressure to be large/heavy to ensure breeding success and survival (Saether 1997). Furthermore, in many systems anthropogenic hunting represents an additional source of selective pressure (Ginsberg & Milner-Gulland 1994;Laurian et al 2000). The direction and strength of these pressures depend on the hunting methodology.…”

Section: Martínez and Others Weight Selection In Huntingmentioning

confidence: 99%

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Different hunting strategies select for different weights in red deer

et al. 2005

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Much insight can be derived from records of shot animals. Most researchers using such data assume that their data represents a random sample of a particular demographic class. However, hunters typically select a non-random subset of the population and hunting is, therefore, not a random process. Here, with red deer ( Cervus elaphus ) hunting data from a ranch in Toledo, Spain, we demonstrate that data collection methods have a significant influence upon the apparent relationship between age and weight. We argue that a failure to correct for such methodological bias may have significant consequences for the interpretation of analyses involving weight or correlated traits such as breeding success, and urge researchers to explore methods to identify and correct for such bias in their data.

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Section: Introductionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Martínez and Others Weight Selection In Huntingmentioning

confidence: 99%

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Different hunting strategies select for different weights in red deer

et al. 2005

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“…Other large mammals inhabiting the region were moose (estimated density of 24 individuals per 100 km 22 [27]), wolf (0.44 individuals per 100 km 22 [28]) and black bear (22 individuals per 100 km 22 [29] We determined the cause of mortality by an investigation of the carcass and its surroundings. The presence of tooth marks, blood or disarticulated, dispersed or crushed bones was considered evidence of predation [32].…”

Section: (A) Study Areamentioning

confidence: 99%

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

et al. 2012

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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.

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“…Sites were 16 km 2 (4 × 4 km), approximately the average moose fall and winter home range size [26][27][28].…”

Section: Sample Site Selectionmentioning

confidence: 99%

Testing the Ideal Free Distribution Hypothesis: Moose Response to Changes in Habitat Amount

Stewart

Komers

2012

ISRN Ecology

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According to the ideal free distribution hypothesis, the density of organisms is expected to remain constant across a range of habitat availability, provided that organisms are ideal, selecting habitat patches that maximize resource access, and free, implying no constraints associated with patch choice. The influence of the amount of habitat on moose (Alces alces) pellet group density as an index of moose occurrence was assessed within the Foothills Natural Region, Alberta, Canada, using a binary patch-matrix approach. Fecal pellet density was compared across 45 sites representing a gradient in habitat amount. Pellet density in moose habitat increased in a linear or quadratic relationship with mean moose habitat patch size. Moose pellet density decreased faster thanwhat would be expected from a decrease in habitat amount alone. This change in pellet group density with habitat amount may be because one or both of the assumptions of the ideal free distribution hypothesis were violated.

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Effects of intensive harvesting on moose reproduction

Cited by 62 publications

References 37 publications

Different hunting strategies select for different weights in red deer

Different hunting strategies select for different weights in red deer

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

Testing the Ideal Free Distribution Hypothesis: Moose Response to Changes in Habitat Amount

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