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12 results for “American marten”
Fig. 1 in Endoparasites of American marten (Martes americana): Review of the literature and parasite survey of reintroduced American marten in Michigan
Fig. 1. Hookworm egg from an American marten (Martes americana). There was no significant difference in the prevalence of hookworm eggs in faecal samples from American marten from the Upper Peninsula (n = 18) and Northern Lower Peninsula (n = 31) of Michigan, USA (prevalence 11.1% and 16.1%, respectively). American marten infected with hookworms were significantly more likely to be anaemic than noninfected American marten (P = 0.01) with an odds ratio of 8.75 (95% confidence interval: 1.4‾56.4).
Seasonality in functional connectivity: A case study with the American marten in Forillon National Park
<p>Protected areas are essential tools for reducing global biodiversity loss. To fulfill their ecological functions, protected areas must be connected to their surroundings, a requirement that is difficult to meet in landscapes intensively disturbed by anthropogenic activities. Therefore, protecting movement corridors at the edges of protected areas is crucial, especially for species with broad habitat needs, such as the American marten (<em>Martes americana</em>). However, habitat selection and space use patterns are dynamic processes, so we could expect that functional connectivity would vary temporally in response to changing environmental conditions and levels of human activities. In this study, we aimed to predict the location of movement corridors for the American marten in Forillon National Park and its periphery during two contrasted periods (snow-free: May–November; snow-covered: December–April). We used "seasonal" resource selection functions to identify core areas (interpreted as circuit "nodes") and CircuitScape to delineate movement corridors between them based on the electrical circuit theory. Habitat selection patterns differed between periods, with martens avoiding open areas, high elevations, and road proximity during the snow-free period, while avoiding areas closer to secondary roads but selecting areas closer to primary roads and housing structures during the snow-covered period. Consequently, the location of movement corridors differed partially between periods; functional connectivity was favored by the presence of forest patches for both periods, while being constrained by open environments, especially during the snow-free period. Our study highlights the importance of modeling functional connectivity at fine temporal scales to provide movement corridors that fulfill the requirements of a species at each period of its annual cycle.</p>
The gut microbiome of wild American marten in the Upper Peninsula of Michigan
<p>Directory Information for The gut microbiome of wild American marten in the Upper Peninsula of Michigan<br> #######</p> <p>"R Code" contains:</p> <p>--- "marten_phyobj.rds" is the phyloseq object that can be directly imported for statistical analysis if the user prefers not to go entire QIIME2 pipeline. The phyloseq object was created from QIIME2 artifacts from the "QIIMEpipe.html" pipeline: the cleaned rooted tree, the cleaned taxonomy table and the cleaned ASV table. <strong>This requires the command "readRDS()" to import. <em>The "load()" command will not work.</em></strong></p> <p><br> --- "Stat.Rmd" Markdown file for "Stat.html"</p> <p>--- "Stat.html" knitted statistical analysis file to view the studies outputs quickly</p> <p>--- "Stat.R" R code if user prefers over Rmarkdown</p> <p>#######</p> <p>"QIIME" contains:<br> --- "martendemux.qza" demultiplexed QIIME2 artifact</p> <p>--- "martendemux.qzv" visualization output of demultiplexed sequence that can be viewed at qiimeview.org</p> <p>--- "MartenMeta.tsv" metadata file for QIIME2 pipeline and statistical analysis</p> <p>--- "QIIMepipe.html" code for bioinformatic pipeline for downstream analysis</p> <p>- "Sequences" folder:<br> --- "R1_demultiplxed_pairedend_marten.fastq.gz" forward reads of demultiplexed, EMP paired end sequences (Illumina Miseq) if the user prefers to use another bioinformatic platform besides QIIME2.</p> <p>--- "R2_demultiplxed_pairedend_marten.fastq.gz" reverse reads of demultiplexed, EMP paired end sequences (Illumina Miseq) if the user prefers to use another bioinformatic platform besides QIIME2.<br> </p>
Data from: Sex-biased habitat selection by American marten in the Acadian forest
<p>Differences in spatial ecology between the sexes are generally expected for mammalian carnivores because of physiological (e.g., sexual dimorphism) or behavioral (e.g., uniparental care of offspring) differences, but sex is rarely included in studies of occurrence or occupancy. We evaluated differences in landscape-scale occurrence, as a function of habitat amount and configuration, between male and female American martens in the heterogeneous, commercially-managed forests of northern Maine. Our analysis focused on resident adults; individuals that had survived to >1 year old, dispersed, and successfully established their home range.</p>
Seasonality in functional connectivity: A case study with the American marten in Forillon National Park
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Data from: Sex-biased habitat selection by American marten in the Acadian forest
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Data from: American marten and fisher do not segregate in space and time during winter in a mixed-forest system
Understanding the mechanisms of coexistence between ecologically similar species is an important issue in ecology. Carnivore coexistence may be facilitated by spatial segregation, temporal avoidance, and differential habitat selection. American martens Martes americana and fishers Pekania pennanti are medium‐sized mustelids that occur sympatrically across portions of North America, yet mechanisms of coexistence between the two species are not fully understood. We assessed spatial and temporal partitioning in martens and fishers in the Upper Peninsula of Michigan, USA, using camera trap data collected during winter 2013–2015. To investigate spatial segregation, we used a dynamic occupancy model to estimate species' occupancy probabilities and probabilities of persistence and colonization as a function of covariates and yearly occupancy probability for the other species. Temporal segregation was assessed by estimating diel activity overlap between species. We found weak evidence of spatial or temporal niche partitioning of martens and fishers. There was high overlap in forest cover selection, and both marten and fisher occupancy were positively correlated with deciduous forests (excluding aspen [Populus tremuloides]). There was strong temporal overlap (equation/ece35097-math-0001.png; CI = 0.79–0.82) with both species exhibiting largely crepuscular activity patterns. Co‐occurrence of martens and fishers appears to be facilitated by mechanisms not investigated in this study, such as partitioning of snow features or diet. Our results add additional insights into resource partitioning of mesocarnivores, but further research is required to enhance our understanding of mechanisms that facilitate marten and fisher coexistence.
Multi-scale landscape genetics of American marten at their southern range periphery
<p>American marten (<i>Martes americana</i>) are a conservation priority in many forested regions of North America. Populations are fragmented at the southern edge of their distribution due to suboptimal habitat conditions. Facilitating gene flow may improve population resilience through genetic and demographic rescue. We used a multi-scale approach to estimate the relationship between genetic connectivity and landscape characteristics among individuals at three scales in the northeastern United States: regional, subregional, and local. We integrated multiple modeling techniques and identified top models based on consensus. Top models were used to parameterize resistance surfaces at each scale, and circuit theory was used to identify potential movement corridors.</p> <p>Regional gene flow was affected by forest cover, climate, developed land cover, and slope. At subregional and local scales, effects were site-specific and included subsets of climate, developed land cover, and slope. Developed land cover significantly affected gene flow in all sites examined at each scale. The effect of slope on gene flow was positive or negative depending on the site examined. At finer scales, reduced variance in forest cover may have limited the ability to detect a relationship with gene flow. Occupancy probability was a relatively poor predictor and we caution its use as a proxy for landscape resistance. Our results underscore the importance of replication and multi-scale approaches in landscape genetics. Climate warming and landscape conversion may reduce the genetic connectivity of marten populations in the northeastern United States and represent the primary challenges to marten conservation at the southern periphery of their range.</p>
FIGURES 8–13. Metagovea oviformis Martens, 1969 in An illustrated catalogue of the South American species of the cyphophthalmid family Neogoveidae (Arthropoda, Opiliones, Cyphophthalmi) with a report on 37 undescribed species
FIGURES 8–13. Metagovea oviformis Martens, 1969, male holotype (SFM 23959) (8–10), female paratype (SFM 23960) (11–13). 8, 11 dorsal view; 9, 12 lateral view; 10, 13 ventral view.
On following pages: 9. American Marten (Martes americana); 10. Yellow-throated Marten (Martes flavigula); 11. Stone 14. Japanese Marten (Martes melampus); 15. Fisher (Martes pennant); 16. Sable (Martes zibellina). Marten (Martes foina); 12. Nilgiri Marten (Martes gwatkinsii); 13. European Pine Marten (Martes martes); in Mustelidae
On following pages: 9. American Marten (Martes americana); 10. Yellow-throated Marten (Martes flavigula); 11. Stone 14. Japanese Marten (Martes melampus); 15. Fisher (Martes pennant); 16. Sable (Martes zibellina). Marten (Martes foina); 12. Nilgiri Marten (Martes gwatkinsii); 13. European Pine Marten (Martes martes);
Data from: American marten and fisher do not segregate in space and time during winter in a mixed-forest system
Open the record for dataset details and reuse information.
Multi-scale landscape genetics of American marten at their southern range periphery
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