Journal of Arid Environments最新文献_第2页

Potential of global vegetation maps in capturing xerophytic vegetation cover: insights from Madagascar's arid ecosystems 全球植被图在捕捉旱生植被覆盖方面的潜力：来自马达加斯加干旱生态系统的见解

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-27 DOI: 10.1016/j.jaridenv.2025.105406

Felana Nantenaina Ramalason , Olivia Lovanirina Rakotondrasoa , Arthur Vander Linden , Guillaume Renard , Harifidy Rakoto Ratsimba , Jan Bogaert , Jean-François Bastin

{"title":"Potential of global vegetation maps in capturing xerophytic vegetation cover: insights from Madagascar's arid ecosystems","authors":"Felana Nantenaina Ramalason , Olivia Lovanirina Rakotondrasoa , Arthur Vander Linden , Guillaume Renard , Harifidy Rakoto Ratsimba , Jan Bogaert , Jean-François Bastin","doi":"10.1016/j.jaridenv.2025.105406","DOIUrl":"10.1016/j.jaridenv.2025.105406","url":null,"abstract":"<div><div>Global vegetation maps are essential tools for ecosystem monitoring, yet they often fail to accurately represent vegetation in arid regions. This study evaluates the performance of four global products—GFCC, GFW, CGLS-LC100, and DW—in the xerophytic shrublands of southwestern Madagascar, a region undergoing rapid deforestation. Satellite-derived estimates were compared with field data collected in 2022 from 41plots (900 m<sup>2</sup> each) using the point-intercept method. Results revealed substantial discrepancies among products, with a coefficient of variation reaching 78.94 % for tree cover, primarily due to differences in vegetation definitions and classification methods. Aggregating tree and shrub cover into a single woody cover layer significantly reduced this variability by 58.19 %. Among the products tested, DW provided the most accurate estimates of woody cover (R<sup>2</sup> = 0.70), while CGLS-LC100 was the most responsive to floristic composition. Product biases varied by vegetation type: DW and CGLS-LC100 tended to overestimate tree cover in structurally developed plots, while GFCC and GFW underestimated it in multi-stemmed thickets. Shrub cover was consistently underestimated across all products. In this context of active forest loss, overestimations may reflect past landscape conditions, while underestimations expose structural limitations. These findings highlight the need for mapping strategies that better capture the complexity of dryland vegetation.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105406"},"PeriodicalIF":2.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The conservation status of the threatened gazelles of Ar Rub’ al-Khālī, Saudi Arabia 沙特阿拉伯arrub ' al-Khālī受威胁瞪羚的保护状况

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-21 DOI: 10.1016/j.jaridenv.2025.105396

Tim Wacher , Ahmed Alboug , Chris Barichievy , Zaffar Rais Mir , Tom Bruce , David Olson , Rajan Amin

{"title":"The conservation status of the threatened gazelles of Ar Rub’ al-Khālī, Saudi Arabia","authors":"Tim Wacher , Ahmed Alboug , Chris Barichievy , Zaffar Rais Mir , Tom Bruce , David Olson , Rajan Amin","doi":"10.1016/j.jaridenv.2025.105396","DOIUrl":"10.1016/j.jaridenv.2025.105396","url":null,"abstract":"<div><div>The Arabian gazelle (<em>Gazella arabica</em>) and Arabian sand gazelle (<em>G. marica</em>) are globally threatened. In ongoing restoration efforts within Saudi Arabia, 240 captive-bred sand gazelles and 73 Arabian gazelles were reintroduced to the 12,684 km<sup>2</sup> Uruq Bani Ma'arid Protected Area in the western Ar Rub’ al-Khālī in the mid-late 1990s. Here, we assess the long-term conservation outcome and compare habitat use by both species. Initial post-release distribution was monitored by VHF radio-tracking. Their distribution and relative abundance were studied 20 years later in 2015–2016 using a large-scale camera-trap survey. Our results show Arabian gazelles established across the western side of the protected area, while sand gazelles were widely distributed across the central protected area, with marked seasonal movement into the interior in the cool season and back to the western margin in the hot season. The results confirm both species have retained their known habitat preferences after captive breeding and release. The study also shows that the Arabian gazelle and to a lesser extent sand gazelle undergo seasonal temporal niche switching of activity patterns, exhibiting nocturnal-crepuscular activity during the hot season and largely diurnal-crepuscular activity during the cool season.</div><div>Releasing groups of desert gazelles at multiple locations simultaneously, over a 2–3 year period into suitable and protected natural habitat is shown to result in established populations. A large-scale long duration camera-trap array provided effective information on relative abundance and distribution of these species persisting 20 years later in a complex habitat where conventional sampling techniques are difficult to implement.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105396"},"PeriodicalIF":2.6,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating climate shocks requires understanding local perceptions: Long-term benefits of regional hurricanes outweigh short-term damages for traditional ranchers in Baja California Sur 减轻气候冲击需要了解当地的看法：地区性飓风的长期利益超过了对下加利福尼亚南部传统牧场主的短期损害

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-21 DOI: 10.1016/j.jaridenv.2025.105408

Shane J. Macfarlan , Connor A. Davis , Anahi Yerman , Francisco Javier Landeros Higuera , Sandra Guadalupe Amador Leon , Pablo Romero de la Toba , Sula Vanderplank

{"title":"Mitigating climate shocks requires understanding local perceptions: Long-term benefits of regional hurricanes outweigh short-term damages for traditional ranchers in Baja California Sur","authors":"Shane J. Macfarlan , Connor A. Davis , Anahi Yerman , Francisco Javier Landeros Higuera , Sandra Guadalupe Amador Leon , Pablo Romero de la Toba , Sula Vanderplank","doi":"10.1016/j.jaridenv.2025.105408","DOIUrl":"10.1016/j.jaridenv.2025.105408","url":null,"abstract":"<div><div>Tropical cyclones (e.g., hurricanes and tropical storms), are considered one of the world's most destructive climatological forces, causing substantial damage especially in urban areas. However, for some arid ecosystems, tropical cyclones represent natural disturbance events, providing important sources of fresh water that support ecosystem functioning. For subsistence populations living in these regions, it is unclear whether they experience these events negatively due to the associated damages or positively within a predictable disturbance regime. Here, we assess these phenomena with traditional ranchers from Baja California Sur, Mexico, following Hurricane Kay (September 2022). We find that despite significant damage caused by the hurricane, nearly the entire sample perceived this tropical cyclone event as a net positive on their lives. This traditional ranching population has a culture that is adapted to the seasonal tropical cyclone disturbance regime, and expects extreme rain events annually to support ecosystem functioning, and therefore their economic livelihoods. To these ranchers, the climate shock is not when the hurricanes come, but rather, when hurricanes do not come. We situate our results within a disturbance ecology framework, highlighting the role of increasing aridity and probability of drought in the North American Arid West.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105408"},"PeriodicalIF":2.6,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Root nodulation and growth in nursery garden of Neltuma flexuosa var. depressa (Fabaceae), a framework species for Monte Desert ecological restoration 蒙特沙漠生态恢复框架种弯叶Neltuma flexxuosa var.洼地（Fabaceae）苗圃根系结瘤与生长

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-18 DOI: 10.1016/j.jaridenv.2025.105405

F.N. Zorbalas , A. Alvarez , D.R. Pérez , M.E. Rodriguez Araujo , T.A. Valfré Giorello , L.J. Lagos

{"title":"Root nodulation and growth in nursery garden of Neltuma flexuosa var. depressa (Fabaceae), a framework species for Monte Desert ecological restoration","authors":"F.N. Zorbalas , A. Alvarez , D.R. Pérez , M.E. Rodriguez Araujo , T.A. Valfré Giorello , L.J. Lagos","doi":"10.1016/j.jaridenv.2025.105405","DOIUrl":"10.1016/j.jaridenv.2025.105405","url":null,"abstract":"<div><div>The effect of different substrates and rhizobacterial inocula on the nodulation and growth of <em>Neltuma flexuosa</em> var<em>. depressa</em> (Fabaceae, Mimosoideae), a typical native shrub from the Monte Desert of Argentina, was investigated in a nursery trial. The substrates used were: native topsoil from the Monte Desert (T0), an artificial substrate formed from silica sands of two different particle sizes (T1), and the same formulation inoculated with <em>Azospirillum brasilense, Pseudomonas fluorescens</em> and <em>Bradyrhizobium japonicum</em> (T2). We evaluated seedlings’ growth, the formation and activity of nitrogen-fixing nodules in the roots, and the symbiotic effectiveness of <em>B. japonicum</em>. Stem length and aboveground biomass were significantly lower in T1 and there were no differences between T0 and T2. The proportion of seedlings that nodulated was similar between substrates treatments (0.85 ± 0.18). However, the number of total nodules (11.68 ± 8.81 vs 2.43 ± 2.22) and active nodules (6.48 ± 6.49 vs 1.17 ± 1.32) was higher in T1 and T2 compared to T0. The presence of <em>B. japonicum</em> inoculum was not observed in the nodules of <em>N. flexuosa</em> var. <em>depressa</em>. This shrub species showed its ability to nodulate across different substrates. The commercial biofertilizer was effective only for growth, but not for the development of nitrogen-fixing nodules. It is essential to advance the knowledge of an inoculum that provides total predictability for nodulation in this species.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105405"},"PeriodicalIF":2.6,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intensified atmospheric aridity in East Africa under future climate change 未来气候变化下东非大气干旱加剧

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-17 DOI: 10.1016/j.jaridenv.2025.105402

Kidane Welde Reda , Xingcai Liu , Qiuhong Tang , Gebremedhin Gebremeskel Haile , Yongdong Wang , Ayalkibet Mekonnen Seka

{"title":"Intensified atmospheric aridity in East Africa under future climate change","authors":"Kidane Welde Reda , Xingcai Liu , Qiuhong Tang , Gebremedhin Gebremeskel Haile , Yongdong Wang , Ayalkibet Mekonnen Seka","doi":"10.1016/j.jaridenv.2025.105402","DOIUrl":"10.1016/j.jaridenv.2025.105402","url":null,"abstract":"<div><div>Vapor pressure deficit (VPD) plays a critical role in regulating water and CO<sub>2</sub> exchanges between land and atmosphere, particularly in climate-vulnerable regions. This study investigated historical and future patterns of VPD using state-of-the-art datasets, including ERA5, CRU TS, MERRA2, and five general circulation models (GCMs) from the Inter-Sectoral Impact Model Inter-comparison Project (ISIMIP) over East Africa. Trends were analyzed annually and seasonally for the historical period (1981–2022), near future (2023–2061), and distant future (2063–2100), along with contributions from temperature, relative humidity, and air pressure to future VPD changes. Results showed that VPD increased annually by 0.04 hPa year<sup>−1</sup> from 1981 to 2022, with the most significant rise in dry regions. Future projections indicate continued VPD increases at both annual and seasonal scales, intensifying in accordance with the magnitude of CO<sub>2</sub> emission scenarios (SSP126, SSP370, and SSP585, respectively). Under SSP585 and SSP370 the annual VPD is projected to increase by 0.06 and 0.05 hPa year<sup>−1</sup>, respectively from 2023 to 2100. The summer season exhibits the highest rate of increase, followed by spring, across all scenarios. This substantial change in VPD during the summer season will significantly impact the agricultural sector of the region. Furthermore, the contribution of temperature increase (148 %–162 %) to the projected increase in VPD outweighs that of relative humidity (−99 % to −117 %) and air pressure (51 %–55 %) changes across the scenarios. Thus, the increasing VPD is expected to have a significant impact on the ecosystems of the East Africa by exacerbating drought conditions.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105402"},"PeriodicalIF":2.6,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on the relationship between wind erosion rate and microtopography around tree-like vegetation 树状植被周围微地形与风蚀速率关系的实验研究

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-16 DOI: 10.1016/j.jaridenv.2025.105404

Liqiang Kang , Meng Zhang

{"title":"Experimental study on the relationship between wind erosion rate and microtopography around tree-like vegetation","authors":"Liqiang Kang , Meng Zhang","doi":"10.1016/j.jaridenv.2025.105404","DOIUrl":"10.1016/j.jaridenv.2025.105404","url":null,"abstract":"<div><div>Vegetation affects wind erosion rate and microtopography by modifying the near-surface airflow field, but the relationship between wind erosion rate and the characteristic parameters of microtopography remains unclear. In this paper, the wind erosion rate and microtopography around rigid tree-like plant models in staggered and square arrangements were measured in a wind tunnel. The results show that under the same plant density and incoming wind speed, the average wind erosion rate in staggered arrangement is 0.26–0.61 times higher than in square arrangement. The erosional distance upwind of plant, the width, depth and area of erosion pit increase with the increase of incoming wind speed and decrease with the increase of plant density. The width and area of pit increase linearly with the increase of erosional distance upwind of plant. The average wind erosion rate is significantly affected by microtopography and increases with the increase of standard deviation of change rate of microtopography height. The experiments found that there are two types of surface erosion around plants: local and global surface erosions. In local surface erosion, the average wind erosion rate increases with the increase of erosional distance upwind of plant, the depth, area and shape factor of pit.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105404"},"PeriodicalIF":2.6,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbial biomass, carbon and nitrogen stocks across land uses and soil types in the Brazilian tropical dry forest region 巴西热带干旱森林区不同土地利用方式和土壤类型的微生物生物量、碳和氮储量

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-16 DOI: 10.1016/j.jaridenv.2025.105401

Pablo Acácio dos Santos Souza , Felipe Jose Cury Fracetto , Andressa Silva de Oliveira , Juscélia da Silva Ferreira , Natache Gonçalves de Moura Ferrão , Rômulo Simões Cezar Menezes , Everardo Valadares de Sá Barretto Sampaio , Paulo Ivan Fernandes Júnior , Ana Dolores Santiago de Freitas

{"title":"Microbial biomass, carbon and nitrogen stocks across land uses and soil types in the Brazilian tropical dry forest region","authors":"Pablo Acácio dos Santos Souza , Felipe Jose Cury Fracetto , Andressa Silva de Oliveira , Juscélia da Silva Ferreira , Natache Gonçalves de Moura Ferrão , Rômulo Simões Cezar Menezes , Everardo Valadares de Sá Barretto Sampaio , Paulo Ivan Fernandes Júnior , Ana Dolores Santiago de Freitas","doi":"10.1016/j.jaridenv.2025.105401","DOIUrl":"10.1016/j.jaridenv.2025.105401","url":null,"abstract":"<div><div>The Brazilian native dry forest (Caatinga) is used as a natural pasture or converted to unfertilized and overgrazed pastures. We investigated the restoration process, measuring soil attributes after three years of cattle exclusion in four soil types under the most common land covers of the region (dense and open Caatinga and pasture). C and N stocks tended to be higher under the dense Caatingas than under the other vegetation covers, particularly in the Regosol (80 and 8 Mg ha<sup>−1</sup>), but tended not to significantly differ between the open Caatingas and the pastures. Microbial biomass C had the same trend, higher under dense Caatingas and in the Regosol (553 mg kg<sup>−1</sup>). Basal soil respiration and C decay constant (0.02 day<sup>−1</sup>) tended to be lower (thus higher C half-life, 347 days) in the Regosol (higher rainfall sites). The Oxisol (lower fertility soil) separated from the other soils in a Principal Component Analysis, especially from the Luvisol (highest fertility soil). Therefore, studies in the region must consider soil types and rainfall. The differences between open Caatingas and pastures in the dense Caatinga indicate that the period necessary for soil recovery after grazing exclusion is longer than three years, including for the microbial population.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105401"},"PeriodicalIF":2.6,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling soil organic carbon loss in arid agroecosystems: A mixed-effects approach to abandoned wheat fields 干旱农业生态系统中土壤有机碳损失的模拟：废弃麦田的混合效应方法

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-15 DOI: 10.1016/j.jaridenv.2025.105403

Afsaneh Ahmadian , Elham Chavoshi , Mozhgan Ahmadi Nadoushan

{"title":"Modeling soil organic carbon loss in arid agroecosystems: A mixed-effects approach to abandoned wheat fields","authors":"Afsaneh Ahmadian , Elham Chavoshi , Mozhgan Ahmadi Nadoushan","doi":"10.1016/j.jaridenv.2025.105403","DOIUrl":"10.1016/j.jaridenv.2025.105403","url":null,"abstract":"<div><div>The management of abandoned lands is critical for carbon sequestration in arid ecosystems, where soil organic carbon (SOC) dynamics play a key role in mitigating land degradation. In abandoned croplands, SOC dynamics are especially important, as they influence carbon storage in regions vulnerable to climate change and unsustainable practices. This study assesses how short-term wheat field abandonment (STWFA) interacts with soil properties and environmental factors to drive SOC depletion in Iran's Zayandeh-Rood River Basin, a region emblematic of water-stressed agroecosystems. By integrating Sentinel-2-derived crop rotation maps, Landsat-8 thermal data for land surface temperature, and field-measured soil parameters (clay content, bulk density, salinity), we applied a linear mixed-effects model to unravel the time-dependent effects of abandonment on SOC over a five-year period (2020–2024). Results revealed a significant decline in SOC with prolonged abandonment (β = −0.413 per year, <em>p</em> < 0.001), exacerbated by elevated LST (β = −0.014, <em>p</em> = 0.006) and reduced the stabilization of soil organic carbon through clay content (STWFA × clay: β = −0.010, <em>p</em> = 0.029). The model explained 75–80 % of SOC variability, with abandonment duration, LST, and clay content being the primary contributors to this variance. Regional differences accounted for 24 % of the variance, highlighting the spatial heterogeneity of SOC dynamics. These findings underscore that arid abandoned wheat fields face compounding SOC losses driven by climatic stress and soil texture dynamics, highlighting the need for actionable strategies such as intermittent revegetation to mitigate carbon loss and enhance soil resilience in water-scarce regions.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105403"},"PeriodicalIF":2.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additive and substitutable prey responses to feral and native predator combinations 对野生和本地捕食者组合的可加性和可替代性猎物反应

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-13 DOI: 10.1016/j.jaridenv.2025.105399

Justin R. Saint Juliana , S.S. Bleicher , S. Mukherjee , V. Sundararaj , J.S. Brown , B.P. Kotler

{"title":"Additive and substitutable prey responses to feral and native predator combinations","authors":"Justin R. Saint Juliana , S.S. Bleicher , S. Mukherjee , V. Sundararaj , J.S. Brown , B.P. Kotler","doi":"10.1016/j.jaridenv.2025.105399","DOIUrl":"10.1016/j.jaridenv.2025.105399","url":null,"abstract":"<div><div>In captive experiments of Negev Desert granivores, we investigated the ways in which combinations of feral mesocarnivores and native predators alter wild prey behavior. We hypothesized that feral mesocarnivores would have a greater impact on prey energy acquisition, reflected in foraging dynamics, than native predators. Allenby's gerbils (<em>Gerbillus andersoni allenbyi</em>) and greater Egyptian gerbils (<em>Gerbillus pyramidum</em>) were used as prey species, with feral dogs (<em>Canis lupus familiaris</em>), feral cats (<em>Felis catus</em>), barn owls (<em>Tyto alba</em>), and horned vipers (<em>Cerastes gasperetti</em>) as predators. Gerbil perceived risk was measured using optimal patch-use theory, with exposures to tethered predators occurring hourly throughout the night. Some nights, two predators were alternated every other hour. We found that human-commensal predators, particularly feral cats, induced stronger foraging than native predators, such as barn owls. Combined predators caused gerbils to decrease foraging only when a higher-risk predator was introduced, as indicated by higher giving-up densities (GUDs) for the dog and cat combination compared to the dog alone, and a nonsignificant increase compared to the cat alone. The impact of feral cats especially appears to outweigh that of native predators. This highlights the conservation challenges to arid environments where feral cats have become ubiquitous.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105399"},"PeriodicalIF":2.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The spatiotemporal dynamics and driving mechanism of ecosystem service supply–demand in China's drylands 中国旱地生态系统服务供需时空动态及驱动机制

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-05-08 DOI: 10.1016/j.jaridenv.2025.105400

Jinyu Wang , Wenwu Zhao , Jingyi Ding

{"title":"The spatiotemporal dynamics and driving mechanism of ecosystem service supply–demand in China's drylands","authors":"Jinyu Wang , Wenwu Zhao , Jingyi Ding","doi":"10.1016/j.jaridenv.2025.105400","DOIUrl":"10.1016/j.jaridenv.2025.105400","url":null,"abstract":"<div><div>Dryland ecosystems provide essential ecosystem services (ESs) that are crucial for human well-being. However, mismatches between the supply and demand of ESs exist across diverse dryland ecosystems because of differences in natural conditions and human activities. Furthermore, it is still unknown how these factors influence the ecosystem service supply‒demand balance (ESDB). In our research, we used a combination of modelling simulations and statistical analysis to examine the spatiotemporal dynamics, trade-offs, and supply‒demand balance of ESs in China's drylands during 2000–2020, including carbon sequestration (CS), water yield (WY), soil conservation (SC), and windbreak and sand fixation (WS). We also explored the influential factors and driving mechanisms of ESDB via a structural equation model. Our findings revealed spatiotemporal mismatches between the supply and demand of each ecosystem service (ES) across aridity gradients from 2000 to 2020: CS deficits emerged in hyper-arid and southeastern regions over time, WY and SC remained undersupplied in hyper-arid and arid zones, while dry sub-humid areas showed improved ESDB for most services. Trade-offs among ESs supply were generally higher in dry sub-humid and semi-arid regions, particularly due to conflicts among WY, SC, and WS. Key natural and socioeconomic factors, such as precipitation, slope, and population density, directly or indirectly affect ESDB, with land use acting as a critical mediator. Our study advances the underlying mechanism of ESDB, supporting sustainable development of China's drylands.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105400"},"PeriodicalIF":2.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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