Demography of populations of deer mice in coastal forest and clear-cut (logged) habitats

1979 ◽  
Vol 57 (8) ◽  
pp. 1636-1648 ◽  
Author(s):  
Thomas P. Sullivan
Keyword(s):  
British Columbia ◽  
Deer Mouse ◽  
Late Summer ◽  
Average Density ◽  
Deer Mice ◽  
First Year ◽  
Coastal Forest ◽  
Juvenile Male ◽  
Clear Cut ◽  
Clear Cutting

This study was designed to test the widely held hypothesis that clear-cut (logged) habitats support higher density populations of Peromyscus than do forested habitats. Deer mouse populations were livetrapped in forest and clear-cut habitats at Maple Ridge, British Columbia, from May 1975 to April 1978. The average density of mice per hectare in the forest was 19.6(1975), 15.8(1976), 22.3(1977), and on the clear-cut areas was 23.3(1975), 16.6(1976), 29.9(1977). The slightly higher number of animals on the clear-cutting in 1975 and 1977 reflected a burst of recruitment in the late summer and fall of each year. The density of mice on clear-cut areas declined during each winter to a level comparable with that of the forest. Juvenile male deer mice were able to enter into the clear-cutting populations during the breeding season in the first year after logging. Recently logged areas may be acting as dispersal or behavioural sinks.

An irruption of deer mice after logging of coastal coniferous forest

1981 ◽  
Vol 11 (3) ◽  
pp. 586-592 ◽  
Author(s):  
Thomas P. Sullivan ◽  
Charles J. Krebs
Keyword(s):  
Deer Mouse ◽  
Coniferous Forest ◽  
Deer Mice ◽  
Coastal Forest ◽  
Old Field ◽  
Mouse Population ◽  
Clear Cut ◽  
Undisturbed Forest

This study describes an irruption of Peromyscusmaniculatus after clear-cut logging of a coastal forest. The abundance of deer mice increased seven to eight times above previous levels in an old field habitat adjacent to the clear cut. This outbreak occurred during and after a logging operation in the fall of 1973. Several alternative explanations for this irruption include increased reproduction or reduced mortality in the deer mouse population, immigration of mice from the surrounding undisturbed forest, or immigration of animals from the clear-cut area. We conclude that removal of timber has the capacity to trigger an irruption of deer mice.

Mitochondrial DNA sequence variation and the specific identification of deer mice (Peromyscus) from Triangle Island, British Columbia, Canada

2001 ◽  
Vol 79 (12) ◽  
pp. 2257-2260 ◽  
Author(s):  
Scott E Chirhart ◽  
Roozbeh Arianpour ◽  
Rodney L Honeycutt ◽  
Ira F Greenbaum
Keyword(s):  
British Columbia ◽  
Mitochondrial Dna ◽  
Deer Mouse ◽  
Population Sample ◽  
Sequence Divergence ◽  
Deer Mice ◽  
Island Population ◽  
Dna Sequence Variation ◽  
Reference Samples ◽  
Formal Recognition

Nucleotide sequences from the ND3, ND4L, and ND4 genes of the mitochondrial DNA of deer mice (Peromyscus) from Triangle Island, British Columbia, were analyzed and compared with those from reference samples of the geographically proximal species Peromyscus maniculatus and Peromyscus keeni. Variation among the deer mice from Triangle Island comprised four sequences with a total sequence divergence of 0.093%. One of these sequences characterized 52% of the 27 individuals analyzed; each of the other sequence variants occurred in smaller, but similar, proportions of the population sample. Phylogenetic and distance-clustering analyses uniformly grouped the sequences from the Triangle Island population and placed them within a cluster otherwise comprised of the P. keeni reference samples. The reference samples of P. maniculatus clustered distinctly and significantly outside of the P. keeni/Triangle Island deer mouse assemblage. These data indicate that, in contradiction to their current formal recognition as P. maniculatus, the deer mice from Triangle Island are representative of, and should be taxonomically relegated to, P. keeni.

Partial and clear-cut harvesting of high-elevation spruce–fir forests: implications for small mammal communities

2003 ◽  
Vol 33 (12) ◽  
pp. 2283-2296 ◽  
Author(s):  
Walt Klenner ◽  
Thomas P Sullivan
Keyword(s):  
Small Mammal ◽  
High Elevation ◽  
Deer Mice ◽  
Abies Lasiocarpa ◽  
Mean Values ◽  
Clear Cut ◽  
Clear Cutting ◽  
Single Tree ◽  
Single Tree Selection ◽  
Peak Abundance

Subalpine spruce (Picea) – fir (Abies) forests occur throughout the Cordillera of western North America. A variety of alternative silvicultural systems to clear-cutting are being investigated in these high-elevation forests in terms of their impacts on ecosystem components. We tested the hypotheses that abundance, reproduction, and survival of populations of (i) southern red-backed voles (Clethrionomys gapperi Vigors) will decline, (ii) long-tailed voles (Microtus longicaudus Merriam) and northwestern chipmunks (Tamias amoenus J.A. Allen) will increase, and (iii) deer mice (Peromyscus maniculatus Wagner) will be similar, with respect to decreasing levels of tree retention. Small mammal populations were live-trapped from 1994 to 1998 in replicated sites of uncut forest, single tree selection, 0.1-ha patch cuts, 1.0-ha patch cuts, a 10.0-ha clearcut, and edges in an Engelmann spruce (Picea engelmannii Parry ex Engelm.) – subalpine fir (Abies lasiocarpa (Hook.) Nutt.) forest near Sicamous, British Columbia, Canada. Clethrion omys gapperi dominated the small mammal community, reaching a peak abundance of 80 animals/ha with mean values ranging from 31 to 50 animals/ha. Over the 4 postharvest years, abundance, reproduction, and survival of C. gapperi populations were consistently similar among uncut forest, single tree selection, and patch cut treatments compared with clear-cut sites where this species declined to extirpation. Microtus longicaudus and T. amoenus occurred predominantly in clearcut sites, whereas P. maniculatus was present in low numbers on all sites. With respect to small mammals, partial harvesting systems appear to provide a means for combining timber extraction with maintenance of mature forest habitat in these subalpine ecosystems.

Sphagnum invasion after clear-cutting and excavator mounding in a hypermaritime forest of British Columbia

2004 ◽  
Vol 34 (8) ◽  
pp. 1730-1746 ◽  
Author(s):  
Taro Asada ◽  
Barry G Warner ◽  
Allen Banner
Keyword(s):  
British Columbia ◽  
Tsuga Heterophylla ◽  
Thuja Plicata ◽  
North Coast ◽  
Clear Cut ◽  
Clear Cutting ◽  
Lower Productivity ◽  
Sphagnum Girgensohnii ◽  
Thuja Plicata Donn

Sphagnum invasion 8 years after an experimental clear-cut and mounding field trial was examined in a mesic western redcedar (Thuja plicata Donn ex D. Don) – western hemlock (Tsuga heterophylla (Raf.) Sarg.) forest on the outer north coast of British Columbia. Sphagnum invasion was prominent in wet hollows in the mounded blocks. Pioneer species, Sphagnum pacificum Flatb. and Sphagnum angustifolium (C. Jens. ex Russ.) C. Jens., were common despite being minor components in the precut forest. Sphagnum girgensohnii Russ., a species of forests, showed expanding colonies and contained some Sphagnum capillifolium (Ehrh.) Hedw. Comparisons of vertical growth and decomposition rates of Sphagnum in the experimental field site and in a nearby natural peatland suggest that peat accumulation potential in the Sphagnum colonies in the mounded blocks is similar to that in the natural peatland. These observations suggest that open peatland-type plant communities become established and paludification processes are beginning. Mounding may be an effective strategy for silvicultural management to improve tree growth in the short term but may initiate paludification and negatively impact forest productivity in the long term in hypermaritime lower productivity forests.

Relationships between deer mice and downed wood in managed forests of southern British Columbia

2006 ◽  
Vol 36 (9) ◽  
pp. 2189-2203 ◽  
Author(s):  
Vanessa J Craig ◽  
Walt Klenner ◽  
Michael C Feller ◽  
Thomas P Sullivan
Keyword(s):  
British Columbia ◽  
Population Dynamics ◽  
Vegetation Cover ◽  
High Elevation ◽  
Deer Mice ◽  
The South ◽  
Clear Cut ◽  
South Central ◽  
High Elevation Site ◽  
Downed Wood

We examined the relationship between deer mice (Peromyscus maniculatus (Wagner)) and downed wood in a low-elevation Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forest and a high-elevation Engelmann spruce (Picea engelmannii Parry ex Engelm.) – subalpine fir (Abies lasiocarpa (Hook.) Nutt.) forest in the south-central interior of British Columbia. We experimentally manipulated the volume of downed wood on clear-cut and forested sites and monitored the response of deer mice with a mark–recapture study to assess population densities and survival and reproduction rates. Populations responded positively to harvesting at the low-elevation but not the high-elevation study area. At the low-elevation study area, the population dynamics of deer mice on clear-cut and forested treatments were not positively associated with patterns of vegetation cover or increasing downed-wood volumes. Instead, populations on clearcuts appeared to increase in response to an unknown factor associated with lower volumes. No relationship was detected between population dynamics of deer mice and downed-wood volumes at the high-elevation site. The population dynamics of deer mice on forests at the high-elevation site appeared to be more closely related to vegetation cover than to downed wood. The results indicated that downed wood is not a critical habitat component for deer mice in the south-central interior of British Columbia.

The impacts of broadcast burning after clear-cutting on the diversity of ectomycorrhizal fungi associated with hybrid spruce seedlings in central British Columbia

2001 ◽  
Vol 31 (2) ◽  
pp. 224-235 ◽  
Author(s):  
Karen Mah ◽  
Linda E Tackaberry ◽  
Keith N Egger ◽  
Hugues B Massicotte
Keyword(s):  
British Columbia ◽  
Ribosomal Rna ◽  
Picea Glauca ◽  
Fragment Length Polymorphism ◽  
Picea Engelmannii ◽  
Internal Transcribed Spacer Region ◽  
Clear Cut ◽  
Clear Cutting ◽  
Polymerase Chain

Morphological and molecular (polymerase chain reaction – restriction fragment length polymorphism) methods were used to assess ectomycorrhiza (ECM) diversity in naturally regenerating and planted Picea engelmannii Parry ex Engelm. × Picea glauca (Moench) Voss seedlings in two recently clear-cut sites, two clear-cut and broadcast burned sites, and two mature forests (>100 years) in central British Columbia. Based on 24 characterized ECM, burning did not affect overall diversity (Shannon, Simpson, Shannon evenness, and Margalef indices). However, the occurrence and relative abundance of some ECM morphotypes varied significantly. Hebeloma and a Russulaceae type 1 were more abundant and Cenococcum was less abundant in planted seedlings from cut-burned sites compared with those from clear-cut sites. E-strain, MRA, and Amphinema were more abundant in planted seedlings from both cut-burned and clear-cut sites compared with naturally regenerating seedlings from mature sites. ECM diversity of regenerating seedlings was significantly greater in mature forests compared with clear-cut sites and was greater in planted seedlings than naturally regenerating seedlings in clear-cut sites. Molecular analysis of the internal transcribed spacer region of the nuclear-encoded ribosomal RNA gene repeat showed no significant differences among treatments or seedling type. Twenty-two genotypes were identified from eight common morphotypes: Cenococcum (one), Thelephora (two), E-strain, Tuber, Hebeloma, and Russulaceae type 1 (three each), MRA (four), and Amphinema (six). Hebeloma genotypes matched three for Amphinema; genotypes from unidentified lightly colonized tips matched those for E-strain, MRA, and Amphinema-Hebeloma.

Lack of caching of direct-seeded Douglas fir seeds by deer mice

1978 ◽  
Vol 56 (5) ◽  
pp. 1214-1216 ◽  
Author(s):  
Thomas P. Sullivan
Keyword(s):  
British Columbia ◽  
Douglas Fir ◽  
Direct Seeding ◽  
Deer Mice ◽  
Seed Caching ◽  
Clear Cut ◽  
Direct Seeded ◽  
Coastal British Columbia

Seed caching by deer mice was investigated by radiotagging seeds in forest and clear-cut areas in coastal British Columbia. Deer mice tend to cache very few Douglas fir seeds in the fall when the seed is uniformly distributed and is at densities comparable with those used in direct-seeding programs.

A feeding experiment with 6-methoxybenzoxazolinone and a wild population of the deer mouse (Peromyscus maniculatus)

1989 ◽  
Vol 67 (9) ◽  
pp. 2220-2224 ◽  
Author(s):  
Horst Korn
Keyword(s):  
British Columbia ◽  
Peromyscus Maniculatus ◽  
Wild Population ◽  
Deer Mouse ◽  
Future Research ◽  
Coastal Forest ◽  
Feeding Experiment ◽  
Control Grid ◽  
Body Weights ◽  
Average Body

The responsiveness of a wild population of Peromyscus maniculatus to the secondary plant compound 6-methoxybenzoxazolinone was tested. No obvious response was found in terms of the start of the breeding season, which was earlier in females on the control grid. This effect could be explained by higher average body weights of the females in the control population. Peromyscus maniculatus living in the coastal forest of southern British Columbia can be considered opportunistic breeders. Other experiments with 6-methoxybenzoxazolinone are reviewed, and guidelines for future research are proposed.

scholarly journals The dynamics of stiff clubmoss Lycopodium annotinum L. patches in clumps of trees left on the clear-cutting in pine forest Leucobryo-Pinetum

2015 ◽  
Vol 57 (1) ◽  
pp. 11-17
Author(s):  
Monika Bogdanowicz ◽  
Anna Śliwińska-Wyrzychowska ◽  
Anna Świercz ◽  
Marcin Kiedrzyński
Keyword(s):  
First Year ◽  
Endangered Plant ◽  
Clear Cut ◽  
Clear Cutting ◽  
The North ◽  
Lycopodium Annotinum ◽  
North Part ◽  
Trees And Shrubs ◽  
Control Patch ◽  
Effective Growth

Abstract Clumps of trees left on the clear-cuttings have an important role in protecting populations of endangered plant species against destruction during silviculture activities. The aim of this study is to describe the changes in the area of the Lycopodium annotinum patches. The area of L. annotinum patch in clump of trees, have been significantly reduced during 5 years after clear-cut. In the first year of the observations, the studied population occupied an area of 69.8 m2 whereas in 2012, it was only 37.5 m2. Most of the shoots were withered away on the south side of the clump. The probable reason was too strong insolation. Shoots that survived were located in the north part of the clump – shielded by young trees and shrubs layer. At this time, the control patch of L. annotinum located inside the forest increased its area. Before the clear-cuttings, the annual growth of vertical shoots of clubmoss was higher in the patch located in future tree clump. After the clear-cutting, growth of shoots in this patch was shorter than in patch located all the time inside the forests. The most effective growth was observed in the third studied patch located in the clear-cutting border. The explanation for this phenomenon could be the higher humidity of habitat on this site. Clumps of trees left after the clear-cutting contribute to the protection of endangered populations, but do not eliminate the significant microhabitat changes. The clubmoss patches located in moist habitats are more likely to survive even if they are partially exposed to the sunlight.

Homing of Rainbow Trout to Inlet and Outlet Spawning Streams at Loon Lake, British Columbia

1959 ◽  
Vol 16 (5) ◽  
pp. 695-719 ◽  
Author(s):  
C. C. Lindsey ◽  
T. G. Northcote ◽  
G. F. Hartman
Keyword(s):  
British Columbia ◽  
Rainbow Trout ◽  
Field Study ◽  
Late Summer ◽  
Salmo Gairdneri ◽  
First Year ◽  
Fish Movement ◽  
Fish Spawn ◽  
Spawning Streams

A four year field study was conducted on rainbow trout (Salmo gairdneri) spawning in the inlet and outlet of Loon Lake. Young and adult trout were trapped and marked in both streams. About 5000 fish spawn in the outlet between mid-March and June; about 22,000 spawn in the inlet between late April and July. Outlet young either enter the lake by late summer or overwinter in the stream and enter the lake next spring or summer. Most inlet young enter the lake in their first year. Return as adults, of fish which had been clipped while entering the lake as young, indicated that about 94% of fish originating from each end homed to their parent stream. Because of the large number of inlet spawners, about a quarter of the outlet spawners are strays which had hatched in the inlet. Recovery of marked fish, movement of adults within the lake, and experimental transfer of adults and young between streams, all indicate that inlet and outlet spawners do not differ genetically in their responses to current. The biological and applied significance of homing, and its possible mechanisms, are discussed.

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