scholarly journals Small terrestrial mammal distributions in Simien Mountains National Park, Ethiopia: A reassessment after 88 years

2019 ◽  
Author(s):  
Evan W. Craig ◽  
William T. Stanley ◽  
Julian C. Kerbis Peterhans ◽  
Josef Bryja ◽  
Yonas Meheretu

Little is known about the distribution and ecology of small mammals inhabiting Simien Mountains National Park despite the presence of mostly endemic species. Prior to this study, the most comprehensive dataset was collected in 1927. This provides a unique opportunity to assess the possible role of climate change over the last 88 years on the elevational distribution of mammals in the Ethiopian highlands. Between September and November 2015, three of us (EWC, WTS, YM) collected non-volant small mammals at four sites (2900, 3250, 3600, and 4000 m a.s.l.) along the western slope of the Simien Mountains using standardized sampling. Over a four-week period we recorded 13 species, comprising 11 rodents and two shrews, all endemic to the Ethiopian Plateau. We found greatest species richness at mid-elevations (3250 m), consistent with a general pattern found on many other mountains worldwide but less so in Africa. We discovered one potentially new species of shrew. No previously unrecorded rodent species were observed. Finally, we compared our species distribution results to the 1927 dataset and found upward elevational shifts in species ranges, suggesting the role and influence of climate change on the small mammal community. Simien Mountains National Park represents an exceptionally valuable core area of endemism and the best protected natural habitat in northern Ethiopia.

2020 ◽  
Vol 101 (3) ◽  
pp. 634-647 ◽  
Author(s):  
Evan W Craig ◽  
William T Stanley ◽  
Julian C Kerbis Peterhans ◽  
Josef Bryja ◽  
Yonas Meheretu

Abstract Despite the presence of mostly endemic species, the most comprehensive data set on the distribution and ecology of small mammals inhabiting Simien Mountains National Park (SMNP) dated from 1927. The study we carried out and report here provides a unique opportunity to assess the possible role of climate change over the last 88 years on the elevational distribution of mammals in the Ethiopian highlands. Between September and November 2015, three of us (EWC, WTS, YM) collected nonvolant small mammals at four sites (2,900, 3,250, 3,600, and 4,000 m a.s.l.) along the western slope of the Simien Mountains using standardized sampling. Over a 4-week period we recorded 13 species, comprising 11 species of rodents and two of shrews, all endemic to the Ethiopian Plateau. We found the greatest species richness at mid-elevations (3,250 m), consistent with a general pattern found on many other mountains worldwide, but less so in Africa. We compared our species distribution results to the 1927 data set and found upward elevational shifts in species’ ranges, highlighting the role and influence of climate change on the small mammal community. SMNP represents an exceptionally valuable core area of endemism and the best protected natural habitat in northern Ethiopia.


2011 ◽  
Author(s):  
Jessica E. Halofsky ◽  
David L. Peterson ◽  
Kathy A. O’Halloran ◽  
Catherine Hawkins Hoffman

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Martin Jenssen ◽  
Stefan Nickel ◽  
Winfried Schröder

Abstract Background Atmospheric deposition of nitrogen and climate change can have impacts on ecological structures and functions, and thus on the integrity of ecosystems and their services. Operationalization of ecosystem integrity is still an important desideratum. Results A methodology for classifying the ecosystem integrity of forests in Germany under the influence of climate change and atmospheric nitrogen deposition is presented. The methodology was based on 14 indicators for six ecosystem functions: habitat function, net primary function, carbon sequestration, nutrient and water flux, resilience. It allows assessments of ecosystem integrity changes by comparing current or prospective ecosystem states with ecosystem-type-specific reference states as described by quantitative indicators for 61 forest ecosystem types based on data before 1990. Conclusion The method developed enables site-specific classifications of ecosystem integrity as well as classifications with complete coverage and determinations of temporal trends as shown using examples from the Thuringian Forest and the “Kellerwald-Edersee” National Park (Germany).


Author(s):  
Dr. Nidhi Chaturvedi, ◽  

The carbon sequestration potential of an unmanaged and previously unstudied Acacia catechu in the Mukundara National Park Rajasthan, by estimating the total aboveground biomass contained in the forest. It turned into observed that the biomass, above ground comprising of stems, branches, and foliage, holds a total of 200 tons per hectare, foremost to a valued 100 tons of carbon being deposited per hectare aboveground. Acacia species consequently has the potential to play a significant function within the mitigation of climate change. The relation among the biomass, M, of each component (stems, branches, and foliage) and the diameter d, of the plant become also studied, by means of fitting allometric equations of the form M = αdβ. It was observed that all components fit this power law relation very well (R2 > 0.7), chiefly the stems (R2 > 0.8) and branches (R2 > 0.9) for which the relation is found to be almost linear.


2021 ◽  
pp. 109258722110429
Author(s):  
Ryan Roberts ◽  
Matt Holly ◽  
Larry Perez

Climate change effects are evident across the National Park System, and units are encouraged to provide proactive, meaningful interpretation on the issue to cultivate informed partners and encourage collaborative stewardship. But climate change is not currently interpreted across all units of the National Park System. Anecdotal observations suggest some units highly prioritize the topic, while others do not. Thus, we conducted an assessment of current online climate change interpretation across the National Park System as one means of quantifying park engagement. Results suggest that—of the 391 units included in the analysis—37% interpreted climate change in some manner online as of February, 2019. Though our method of analysis does not fully describe park interpretive efforts, our findings provide a baseline measure of online interpretation and help to prioritize future training and support. Furthermore, our work provides a minimally intensive approach for future assessment of online climate change interpretation.


2021 ◽  
Vol 6 (1) ◽  
pp. 58612
Author(s):  
Silvi Dwi Anasari ◽  
Wulan Pusparini ◽  
Noviar Andayani

The distribution of a species can help guide the protection activities in their natural habitat. Conversely, the lack of information on this distribution makes the protection strategy of this species difficult. The research was conducted in Way Canguk Research Station, Bukit Barisan Selatan National Park from January until March 2018. The purposes of this research were to create a distribution prediction map of Sunda pangolin (Manis javanica) and estimating the environment variables that most influenced the probability of the distribution. Fourteen points of camera trap coordinates were used for presence data with nine types of environment variables such as elevation, slope, understorey, canopy cover, distance from roads, distance from rivers, distance from villages, food source, and distance from the threat. The result of maxent showed an Area Under the Curve (AUC) value of 0.909 categorized as very good. The highest probability of Sunda pangolin distributions was in the Pemerihan Resort and Way Haru Resort area, while the dominant environmental variables included the distance from the village, the canopy cover, and the distance from threat with the value 47.7; 25.85; and 15.8%, respectively. Prediction maps and environment variables can help to identify the population of Sunda pangolin in the wild and can provide input for the national parks to prioritize protection areas for Sunda pangolin from the increased poaching.


1983 ◽  
Vol 61 (5) ◽  
pp. 970-980 ◽  
Author(s):  
Arthur M. Martell

Changes in small mammal communities following logging were monitored in clear-cut and strip-cut upland black spruce (Picea mariana) stands and in selectively cut mixed wood stands in north-central Ontario. Clear-cutting and subsequent scarification essentially eliminated the vegetative cover. Much of the ground cover recovered within 5 years and shrubs within 12 years, but mosses and lichens took much longer. The small mammal community in both clear-cut and strip-cut stands changed over the first three years after logging from one dominated by southern red-backed voles (Clethrionomys gapperi) to one dominated by deer mice (Peromyscus maniculatus) and then remained relatively stable for up to 13 years after harvest. That shift was not apparent in selectively cut mixed wood stands where the composition of the small mammal community was similar between uncut stands and stands 4–23 years after harvest. There was relatively little change in total numbers of small mammals after logging. In general, the diversity and evenness of small mammals increased or remained stable in the first 1–3 years following harvest, decreased on older (3–16 years) cuts, and then increased to values similar to those in uncut stands on the oldest (19–23 years) cuts.


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