Home Range Characteristics of Adult Fishers

Arthur, Stephen M.; Krohn, William B.; Gilbert, James R.

doi:10.2307/3809196

Cited by 48 publications

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“…An average fivefold difference in skinned carcass weight of fishers versus martens (Table 1) suggests that fisher populations are, on average, approximately one-fifth as dense as marten populations. The ratios of the mean sizes of fisher and marten territories (based on the minimum convex polygon and harmonic mean methods) in southcentral (Arthur et al 1989a) and northcentral (Katnik 1992) Maine, respectively, averaged 4.9 across sexes, supporting the fivefold difference in harvest categories.…”

Section: Study Area and Methodsmentioning

confidence: 78%

Relations among fishers, snow, and martens: Development and evaluation of two hypotheses

Krohn¹,

Elowe²,

Boone³

1995

The Forestry Chronicle

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Literature about the fisher (Martes pennanti) contains the folLes rtftrences faites au ptkan (Martes pennanti) soultvent lowing contradictions: (1) the species is an old-growth specialdeux contradictions: (1) l'esptce est un s#cialiste des vieilles ist versus a forest generalist, and (2) it lives with marten (M. a m rfor& par opposition B un g6ntraliste de toutes les forCts, et (2) il icana) with minimal interaction versus densities of the two vit avec un minimum d'interaction avec la martre (M. americana) species are inversely related. These contradictions beg the quespar rapport B la densit6 inversement relite des deux esptces. Ces contradictions posent les questions suivantes B savoir quel est tions of what is fisher habitat and does habitat affect the interactions l,habitat du ptkan et comment celui-ci affecte les interactions des the Martes. These questions were examinedb~ dew Martes. Ces questions ant kt6 6mdites en fonction de l'andyse the distributions of fishers (n = 15,549) and martens (n = 40,516) de la distributions des ptkans (n = 15 549) et des martres (n = 40 harvested in Maine, 1980Maine, -1987 fr6quentes (Xmensuel = 6.5) et un couvert neigeux abondant (X total were rare in northwestern Maine but were common throughout mensue1 2 48 cm) entre les mois de decembre et mars. Les p6kans the rest of the state where snowfalls were less freq~ent. We &lent rares dms le nord-ouest du Maine mais c o m u n s dans le hypothesize that regular accumulations of deep snow reduce reste de l'6tat oii les prkipitations de neige 6taient moins fr6quentes. the fisher's fitness (via decreasing recruitment, survival, or both), Nous posons comme hypothk que l'accumukdon r6gulik de neige resulting in a low abundance in northwestern Maine. In addition, r6duit l'extension de l'aire du ptkm (au niveau de sa reproduction, we hypothesize that mns are rare in southem ~~i~~ due to de sa survie ou de ces deux 616ments), ayant pour cons6quence un petition from a dense fisher population. nese hypotheses were faible niveau de population dans le nord-ouest du Maine. De plus, nous posons cornme hypothtse que la marire est peu abondante dans evaluated looking at patterns in age and recruitment ratios of le sud du Maine par suite de la comp&tition exercte la populafishers (n = 2,706) and martens (n = 5,572) harvested in core and tion plus 61evk de gh. ces hypothtses 6 e evduks par ~6 u d e noncore habitats for 1980-1984. We found low de la distributions des 8ges et des ratios de jeunes animaux chez les of fisher recruitment (P < 0.001) in the marten's core habitat conp6kans (n = 2 706) et les martres (n = 5 572) pitgts dans le habisistent with the hypothesis that deep and frequent snowfalls tats principaux et secondaires des deux exptces entre 1980 et limit fishers. Few adult martens were harvested (P < 0.001) in the 1984. Nous avons relevt des indices faibles de reproduction (P < core habitats of fisher, consistent with our hypothesis that high 0.001) au coeur de l'habitat de la martre ce qui est consistant avec fisher densities limit ...

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Section: Study Area and Methodsmentioning

confidence: 78%

Relations among fishers, snow, and martens: Development and evaluation of two hypotheses

Krohn¹,

Elowe²,

Boone³

1995

The Forestry Chronicle

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“…Lastly, we consolidated seasonal radiolocations from as many as three consecutive years for some females because of constraints of sample size. As shown by Arthur et al (1989) in Maine, areas used by female Fishers vary among years. If the Fishers in our study were using distinct portions of their home range in each year, this effect would be ameliorated by our methods.…”

Section: Discussionmentioning

confidence: 99%

“…Many studies on the ecology of Fishers typically occur in areas with relatively high densities of Fishers (e.g., Arthur et al 1989;Garant and Crête 1997), possibly because Fishers may be more easily captured in these areas than in areas with low densities. In areas where home ranges of females are densely packed and resources are distributed relatively uniformly across the landscape, the ratio of home range size between the sexes appears to be closer to that predicted from body mass ratios (e.g., Garant and Crête 1997).…”

Section: Discussionmentioning

confidence: 99%

“…Badry et al (1997) found that translocated Fishers in Alberta had home ranges of 14.9 km² and 24.3 km² for females (F) and males (M) respectively, which were slightly larger home ranges than those reported for Fishers in eastern North America (e.g., Maine, 16.3 km² (F), 30.9 km² (M), Arthur et al 1989;Massachusetts, 7.6 km² (F), 10.0 km² (M), Fuller et al 2001;Quebec: 5.4 km² (F), 9.2 km² (M), Garant and Crête 1997).…”

mentioning

confidence: 93%

“…The asociality of Fishers is also exhibited in their spatial organization. Fishers exhibit intrasexually exclusive home ranges, a common spacing pattern among the Mustelidae in which territories of members of the same sex rarely overlap (Kelly 1977;Powell 1979;Arthur et al 1989).…”

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confidence: 99%

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Home Ranges and Spatial Organization of Fishers, <em>Martes pennanti</em>, in Central British Columbia

Weir

Harestad

Corbould³

2009

Can Field Nat

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We described the size and spatial arrangement of aggregate and seasonal home ranges for 17 radio-tagged resident Fishers (Martes pennanti) that were >1.5 years old in two areas of central British Columbia during 1990-1993 and 1996-2000. We estimated home range size for each Fisher from the 95% isopleth of the utilization distribution generated using a fixed kernel model with smoothing selected by least-squares cross-validation (95% FK). For comparison to previous studies, we also calculated the minimum convex polygon estimate of home range size (MCP) for each animal. The aggregate home ranges (95% FK) of female Fishers (mean = 37.9 km², SD = 18.5, range = 10.5 – 81.2, n = 11) were significantly smaller than those of males (mean = 161.3 km², SD = 100.0, range = 46.0 – 225.2, n = 3; P = 0.019). We observed minor overlap among 95% FK home ranges of Fishers of the same sex, but considerable overlap among home ranges of males and females. Home ranges (95% FK or MCP) that we observed in central British Columbia were larger than those reported elsewhere in North America, particularly for males. We suggest that the distribution of resources for Fishers may occur at lower gross densitiesin central British Columbia than in other portions of the Fisher’s range and that suitable habitat in which Fishers can establish home ranges is not found uniformly across the landscape.

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Habitat, Climate, and Fisher and Marten Distributions

et al. 2019

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Since the mid-twentieth century, fisher populations (Pekania pennanti) increased in several eastern jurisdictions of North America, particularly in the northern part of the species' range. Changes in fisher distribution have led to increased overlap with the southern portion of the range of American marten (Martes americana), whose populations may be locally declining. This overlap occurs particularly in habitats undergoing natural and anthropogenic modification. The objective of our study was to determine the respective effects of habitat changes and climatic conditions on fisher and marten populations in Quebec, Canada, based on trapper knowledge. We analyzed annual fisher and marten harvest (number of pelts sold/100 km 2) between the 1984-1985 and 2014-2015 trapping seasons using linear mixed models. Fisher harvest increased with the increased abundance of mixed forests >12 m tall, resulting from decades of forest harvesting. Fisher harvest decreased with increasing spring rains, which can affect survival when rearing young. Marten harvest decreased with increasing winter rains, which lower thermoregulation capacity and hamper movements by creating an ice crust on the snowpack, reducing access to subnivean areas. Decline in marten harvest during the 30-year study period coincided with an increase in fisher harvest, suggesting possible interspecific competition. Results highlight that managers should strive to maintain mixedwood stands taller than 12 m to maintain high quality habitat for fishers. Our study confirms the importance of working with trappers to assess furbearing population trends in response to habitat changes and climatic conditions.

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Home Range Characteristics of Adult Fishers

Cited by 48 publications

References 0 publications

Relations among fishers, snow, and martens: Development and evaluation of two hypotheses

Relations among fishers, snow, and martens: Development and evaluation of two hypotheses

Home Ranges and Spatial Organization of Fishers, <em>Martes pennanti</em>, in Central British Columbia

Habitat, Climate, and Fisher and Marten Distributions

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