Rangeland degradation assessment in Kyrgyzstan: vegetation and soils as indicators of grazing pressure in Naryn Oblast

Franziska, Hoppe; KyzyTaalaigul, Zhusui; UsupbaevAdilet,; SchickhoffUdo,

doi:10.1007/s11629-016-3915-5

Cited by 29 publications

(10 citation statements)

References 72 publications

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“…Hence, the prevailing pattern for wet mountains seems to be either a hump‐shape or a decreasing pattern. A fourth pattern, that is an increase in richness with elevation, has also been reported several times, for example in Tanzania (Lovett, Marshall, & Carr, ), in Kyrgyzstan (Hoppe, Zhusui Kyzy, Usupbaev, & Schickhoff, ) and in Egypt (Coals, Shmida, Vasl, Duguny, & Gilbert, ). A fifth pattern, which is rarely observed, is an increase in richness followed by a plateau of species richness at higher elevations.…”

Section: Introductionmentioning

confidence: 56%

“…While the number of studies for temperate and tropical mountains is still increasing, arid mountain systems remain severely understudied. For arid mountains, many studies found high plant species richness in intermediate elevations, which are often related to favourable climatic conditions where the interaction of precipitation and temperature provides optimum hygrothermal conditions for plant growth and diversity (Ghazanfar, ; Hoppe et al, ). For desert mountains of the Middle East, several studies reported a hump‐shaped pattern in the higher arid mountains, for example in the Red Sea region of Saudi Arabia and Egypt (Hegazy, El‐Demerdash, & Hosni, ; Hegazy, Lovett‐Doust, Hammouda, & Gomaa, ), and in Oman (Brinkmann, Patzelt, Dickhoefer, Schlecht, & Buerkert, ).…”

Section: Introductionmentioning

confidence: 99%

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Elevation‐richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt

et al. 2019

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Mountains provide a unique opportunity to study drivers of species richness across relatively short elevation gradients. However, few studies have reported elevational patterns for arid mountains. We studied elevation‐richness pattern along an elevational gradient at the arid mountain Gebel Elba, south‐east of Egypt, expecting a unimodal richness pattern. We sampled 133 vegetation plots (10 × 10 m) in four wadis along an elevational gradient from 130 to 680 m which represents the transition from desert to mountain wadi systems. We used generalised additive models to describe the relationship between elevation and plant species richness. We found a strong increase in species richness and Shannon diversity at low elevations followed by a plateau at mid‐ to high elevations. When we analysed each tributary as a single gradient, no pattern was found. The analysed elevational gradient seems to be a major stress gradient in terms of temperature and water availability, exhibiting a trend of increasing species richness that changes to a plateau pattern; a pattern rarely observed for wadi systems in arid mountains. We discuss the observed pattern with the climatic stress hypothesis and the environmental heterogeneity hypothesis as possible explanations for the pattern.

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Section: Introductionmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Elevation‐richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt

et al. 2019

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“…Changes in vegetation community composition at higher elevations occur as cold-adapted species decrease in abundance while warm-adapted species increase in a process called thermophilization (Gottfried et al 2012). Furthermore, pasture degradation, including the spread of weedy and unpalatable species, is already a concern in the highland pastures of Kyrgyzstan (Hoppe et al 2016, Eddy et al 2017. A logical next step is to link snow cover seasonality-timing of snow onset, snowmelt, and duration of snow season-with subsequent land surface phenology to detect moisture-induced vegetation stress in highland pastures.…”

Section: Discussionmentioning

confidence: 99%

Changing snow seasonality in the highlands of Kyrgyzstan

Tomaszewska

Henebry

2018

Environ. Res. Lett.

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Few studies have examined changing snow seasonality in Central Asia. Here, we analyzed changes in the seasonality of snow cover across Kyrgyzstan (KGZ) over 14 years from 2002/03-2015/16 using the most recent version (v006) of MODIS Terra and Aqua 8 day snow cover composites (MOD10A2/MYD10A2). We focused on three metrics of snow seasonality-first date of snow, last date of snow, and duration of snow season-and used nonparametric trends tests to assess the significance and direction of trends. We evaluated trends at three administration scales and across elevation. We used two techniques to assure that our identification of significant trends was not resulting from random spatial variation. First, we report only significant trends (positive or negative) that are at least twice as prevalent as the converse trends. Second, we use a two-stage analysis at the national scale to identify asymmetric directional changes in snow seasonality. Results show that more territory has been experiencing earlier onset of snow than earlier snowmelt, and roughly equivalent areas have been experiencing longer and shorter duration of snow seasons in the past 14 years. The changes are not uniform across KGZ, with significant shifts toward earlier snow arrival in western and central KGZ and significant shifts toward earlier snowmelt in eastern KGZ. The duration of the snow season has significantly shortened in western and eastern KGZ and significantly lengthened in northern and southwestern KGZ. Duration is significantly longer where the snow onset was significantly earlier or the snowmelt significantly later. There is a general trend of significantly earlier snowmelt below 3400 m and the area of earlier snowmelt is 15 times greater in eastern than western districts. Significant trends in the Aqua product were less prevalent than in the Terra product, but the general trend toward earlier snowmelt was also evident in Aqua data.

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“…Some economic consequences arise, such as the decreased capacity to produce commodities [24,45,90] (e.g., meat and wool). This occur because degraded grasslands have a decreased capacity to provide forage for livestock (e.g., decreased ANPP) [8,18,24,26,35,55,91,92]. In addition, in degraded grasslands, high forage quality species could be replaced by low productive species [8,31,35,67], with the consequent loss of forage nutritional value [31].…”

Section: What Are the Main Consequences Of Grassland Degradation?mentioning

confidence: 99%

Drivers, Process, and Consequences of Native Grassland Degradation: Insights from a Literature Review and a Survey in Río de la Plata Grasslands

2019

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Natural grasslands are being progressively degraded around the world due to human-induced action (e.g., overgrazing), but there is neither a widely accepted conceptual framework to approach degradation studies nor a clear definition of what “grassland degradation” is. Most of the drivers, processes, and consequences related to grassland degradation are widespread and are usually separately quoted in the literature. In this paper, we propose a comprehensive framework with different conceptual categories, for monitoring grassland degradation, and a new definition based on current ones. We provide a conceptual update of grassland degradation based on a literature review and an expert survey, focused on the Río de la Plata grasslands (RPG). We identified “drivers” as external forces or changes that cause degradation; “processes” as measurable changes in grasslands conditions that can be evaluated using indicators; and “consequences” as the impacts or results of the process of grassland degradation. We expect that this conceptual framework will contribute to monitoring programs, to support management decisions, to design conservation measures, and to communicate the importance of grasslands conservation and the different concepts involved. Particularly for RPG, we expect that this paper will contribute to promote sustainable management practices in this important and often neglected ecosystem.

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Rangeland degradation assessment in Kyrgyzstan: vegetation and soils as indicators of grazing pressure in Naryn Oblast

Cited by 29 publications

References 72 publications

Elevation‐richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt

Elevation‐richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt

Changing snow seasonality in the highlands of Kyrgyzstan

Drivers, Process, and Consequences of Native Grassland Degradation: Insights from a Literature Review and a Survey in Río de la Plata Grasslands

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