Journal of Arid Environments最新文献_第9页

The function of plants collected by bush Karoo rats (Otomys unisulcatus): Do dried up food plants represent stored food? 灌木卡鲁大鼠采集的植物的功能：干枯的食用植物是否代表储存的食物？

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-22 DOI: 10.1016/j.jaridenv.2025.105385

S.P. Sangweni , N. Pillay , J. Ganzhorn , R. Rimbach , C. Schradin , L. Makuya

{"title":"The function of plants collected by bush Karoo rats (Otomys unisulcatus): Do dried up food plants represent stored food?","authors":"S.P. Sangweni , N. Pillay , J. Ganzhorn , R. Rimbach , C. Schradin , L. Makuya","doi":"10.1016/j.jaridenv.2025.105385","DOIUrl":"10.1016/j.jaridenv.2025.105385","url":null,"abstract":"<div><div>Food storing to cope with food reduction during winter has been observed in many rodents in the northern hemisphere. Food storing could also be adaptive in semi-deserts of the southern hemisphere, which experience food-restricted dry seasons. We studied the function of dried food plants found at the stick lodges of bush Karoo rats in a semi-desert in South Africa. We performed 998 focal animal observations and monitored 12 lodges to record the fate of plant pieces carried back to the lodges. Collected plant species were eaten green (68 %), eaten as plantong (12 %), incorporated into the structure of the lodge (11 %), or their fate was unknown (9 %). Especially succulents carried back to the lodge dried out, forming what we refer to as plantong. This happened mainly in the food rich moist season. However, plantong was not stored from the moist to the dry season but was consumed within 6 ± 5 days. Bush Karoo rats readily ate plantong presented to them experimentally. We regard plantong as leftover from food freshly consumed at the lodge, but not as food collected in the moist season to be stored for later consumption during the dry season.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105385"},"PeriodicalIF":2.6,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859821","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

Asymmetric effects of daytime and nighttime warming on vegetation greenness in the Mongolian Plateau 蒙古高原昼夜增温对植被绿度的非对称效应

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-21 DOI: 10.1016/j.jaridenv.2025.105394

Jiale Xu , Xingchuan Yang , Leyan Shi , Zhiqiang Yang , Yixue Zhong , Pengfei Ma , Zhuowei Hu , Pengcheng Wang , Wenji Zhao

{"title":"Asymmetric effects of daytime and nighttime warming on vegetation greenness in the Mongolian Plateau","authors":"Jiale Xu , Xingchuan Yang , Leyan Shi , Zhiqiang Yang , Yixue Zhong , Pengfei Ma , Zhuowei Hu , Pengcheng Wang , Wenji Zhao","doi":"10.1016/j.jaridenv.2025.105394","DOIUrl":"10.1016/j.jaridenv.2025.105394","url":null,"abstract":"<div><div>Asymmetric warming of land surface temperatures during the daytime and nighttime has significantly influenced global vegetation growth. This study examines the spatio-temporal patterns of daytime and nighttime temperatures, as well as vegetation growth, in the Mongolian Plateau using ERA-5 data and GIMMS Normalized Difference Vegetation Index (NDVI) data from 1982 to 2022. Through partial correlation and multiple regression analyses, the study further investigates the asymmetric responses of vegetation growth to variations in daytime and nighttime temperatures across the region. The key findings of the study are as follows: (1) Between 1982 and 2022, both daytime and nighttime temperatures in the Mongolian Plateau showed an increasing trend. The rate of increase in daytime temperature (0.44 °C/decade) was 1.22 times that of nighttime temperature (0.36 °C/decade). NDVI values generally exhibited an upward trend, with a growth rate of approximately 0.004/decade. (2) Vegetation growth responses to daytime and nighttime temperatures were asymmetric across the Mongolian Plateau. In 77.95 % of the region, increases in nighttime temperatures were positively correlated with vegetation growth, while 86.46 % of the same regions showed a negative correlation between daytime temperature increases and vegetation growth. (3) Over time, the correlation and sensitivity of NDVI to both daytime and nighttime temperatures have weakened. The inverse responses of NDVI to daytime and nighttime temperature variations may be attributed to the arid climatic conditions of the Mongolian Plateau. Additionally, the weakening of these responses over time may reflect an increasing adaptability of vegetation to the region's climate aridity.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105394"},"PeriodicalIF":2.6,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854799","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

Evaluation of machine-learning algorithms in estimation of relative water content of sorghum under different irrigated environments 不同灌溉环境下高粱相对含水量估算的机器学习算法评价

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-18 DOI: 10.1016/j.jaridenv.2025.105390

S. Divya Dharshini , Anurag , Anil Kumar , Satpal , Manoj Kumar , P. Priyanka , K. Pugazenthi

{"title":"Evaluation of machine-learning algorithms in estimation of relative water content of sorghum under different irrigated environments","authors":"S. Divya Dharshini , Anurag , Anil Kumar , Satpal , Manoj Kumar , P. Priyanka , K. Pugazenthi","doi":"10.1016/j.jaridenv.2025.105390","DOIUrl":"10.1016/j.jaridenv.2025.105390","url":null,"abstract":"<div><div>Sorghum, a climate-resilient crop widely cultivated in arid and semi-arid regions, is crucial for food and feed security in India. Its ability to tolerate water stress makes it essential for sustainable agriculture under future climatic scenarios. However, the inherent delay in water stress symptom expression in sorghum poses challenges for timely intervention, necessitating precise monitoring methods for assessing crop water status. This study evaluates the performance of different ML algorithms in estimating the relative water content of the sorghum under irrigated and rainfed conditions. The results showed that the distinct spectral curves obtained under the two different irrigated condition. The four different ML algorithms such as RF, XGboost, SVM, PLS were trained with spectral reflectance data covering 320–1100 nm to estimate the RWC of the sorghum. Among the models, SVM (R<sup>2</sup> = 0.94, RMSE = 1.457, MSE = 2.123) demonstrated the highest accuracy followed by XGboost, RF, and PLS. Under rainfed conditions, all models exhibited reduced performance, with XGboost performing relatively better (R<sup>2</sup> = 0.70, low RMSE value of 3.707, and MSE of 13.741), while PLS performed the least (R<sup>2</sup> = 0.60, RMSE = 5.523, MSE = 30.505). This study demonstrates the potential of ML algorithms, particularly SVM and XGBoost, for precise RWC estimation and also highlighted the limitations of models under limited water condition.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105390"},"PeriodicalIF":2.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844233","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

Overlooked stories beneath the rocks: Rodents as potential columnar cactus seed dispersers in the campo rupestre ecosystem 岩石下被忽视的故事：啮齿动物是仙人掌生态系统中潜在的柱状种子传播者

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-17 DOI: 10.1016/j.jaridenv.2025.105388

Leonardo Guimarães Lessa , Dayana Maria Teodoro Francino , Christian Nathan da Silva Oliveira , Ítalo António Cotta Coutinho , Tiago Vinicius Fernandes

{"title":"Overlooked stories beneath the rocks: Rodents as potential columnar cactus seed dispersers in the campo rupestre ecosystem","authors":"Leonardo Guimarães Lessa , Dayana Maria Teodoro Francino , Christian Nathan da Silva Oliveira , Ítalo António Cotta Coutinho , Tiago Vinicius Fernandes","doi":"10.1016/j.jaridenv.2025.105388","DOIUrl":"10.1016/j.jaridenv.2025.105388","url":null,"abstract":"<div><div>Although small rodents are typically considered seed predators, recent evidence indicates they may also serve as endozoochoric dispersers for small-seeded plants. In this context, <em>Thrichomys apereoides</em> (Rodent) is one of the main consumers of <em>Cipocereus minensis</em> fruits, an endemic cactus within the <em>campo rupestre</em> ecosystem, a high-elevation rocky grassland. However, the full extent of its potential as a seed dispersal agent for this plant remains unknown. We investigated the effects of seed scarification following gut passage by <em>T. apereoides</em> on cactus seeds, evaluating the gut passage effects on seed fate (germinability and viability). We also explore possible mechanisms involved in germination changes by evaluating the morphological changes in seeds after gut passage. We found that 92 % of seeds found in <em>T. apereoides</em> feces appeared undamaged. However, we observed a divergent effect of gut passage on seed fate: while it had no effect on the seed viability, it reduced seed germination from 11.9 % (Seeds without pulp, extracted directly from ripe fruits) to 4.3 %. An anatomical analysis of seeds reveals that while the seed coat is thick and resistant to gut passage, microfissures in some seeds allow for embryo digestion. Despite those limitations, our results provide the first evidence for the potential contribution of <em>T. apereoides</em> dispersing viable seeds of <em>C. minensis</em>, a vital process to seed bank formation and plant establishment.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105388"},"PeriodicalIF":2.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839187","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

Habitat associations of desert bighorn sheep in Sonora, Mexico 墨西哥索诺拉沙漠大角羊的生境协会

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-16 DOI: 10.1016/j.jaridenv.2025.105386

Juan Manuel Segundo Galán , Erik Joaquín Torres-Romero , Louis C. Bender

{"title":"Habitat associations of desert bighorn sheep in Sonora, Mexico","authors":"Juan Manuel Segundo Galán , Erik Joaquín Torres-Romero , Louis C. Bender","doi":"10.1016/j.jaridenv.2025.105386","DOIUrl":"10.1016/j.jaridenv.2025.105386","url":null,"abstract":"<div><div>Desert bighorn (<em>Ovis canadensis mexicana</em>) have declined throughout Mexico, necessitating actions to inform habitat management and guide population restorations. We used a generalized resource-area-dependence analysis and univariate modeling of home range sizes to identify habitat quality for, and distribution v. availability (i.e., “habitat use”) analyses to further identify habitat associations of, 37 satellite/GPS collared adult desert bighorn in Sonora, Mexico. We found that sarcocaul shrubland and greater terrain ruggedness were most associated with desert bighorn home ranges. Sarcocaul shrubland was the only vegetation type related to home range size (i.e., habitat quality) of desert bighorn (adult females), and was also the only vegetation type significantly overrepresented in home ranges of both sexes. Similarly, greater terrain ruggedness was consistently associated with both sexes. Our results reflected availability of preferred foods and greater security for desert bighorn in Sonora. Our individual-based, telemetry-based data provide a rigorous basis for evaluating habitat potential and planning population restorations of bighorn in Mexico, and provide a quantitative guide for conservation of desert bighorn habitat and populations in Sonora and throughout arid Mexico.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105386"},"PeriodicalIF":2.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839186","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

Does sample size of leaf osmotic potential significantly affect the evidence of its association with cotton yield? 叶片渗透势的样本量是否显著影响其与棉花产量相关的证据？

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-15 DOI: 10.1016/j.jaridenv.2025.105387

Xuejun Dong , Dale A. Mott , Quan Zhou , Benjamin M. McKnight

{"title":"Does sample size of leaf osmotic potential significantly affect the evidence of its association with cotton yield?","authors":"Xuejun Dong , Dale A. Mott , Quan Zhou , Benjamin M. McKnight","doi":"10.1016/j.jaridenv.2025.105387","DOIUrl":"10.1016/j.jaridenv.2025.105387","url":null,"abstract":"<div><div>Leaf osmotic potential at full turgor (<em>π</em><sub>0</sub>) has been used frequently to indicate turgor loss point of plant leaves. However, even a rapid measurement of <em>π</em><sub>0</sub> using osmometry is time-consuming, if numerous leaf samples need to be measured. Because of this, researchers tend to use a small sample size to determine <em>π</em><sub>0</sub> and relate it to indices of crop performance. Yet the statistical and agronomic significance of using a small sample size of <em>π</em><sub>0</sub> to indicate crop performance is not known. We address this question using field measurements and statistical resampling. Six mature leaf samples were collected at the peak bloom stage from each of the 54 cotton plots in Texas, USA in 2024. The <em>π</em><sub>0</sub> of the collected leaves were measured using an osmometer. Seed cotton yields from the field plots were measured near the end of cotton season. To test the effect of sample size on the evidence of the association between <em>π</em><sub>0</sub> and cotton yield, 1–6 resamples of <em>π</em><sub>0</sub> were randomly drawn with replacement from the original 6 measurements per plot for the 54 plots. The resampled data of <em>π</em><sub>0</sub> were then used as independent variable to predict cotton yield. We found that, considering the labor and cost, sampling 3 leaves per plot would be adequate for the linear regression between <em>π</em><sub>0</sub> and cotton yield.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105387"},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829136","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

Plant mycorrhization is resilient to land use change in a thornscrub in northwestern Mexico 在墨西哥西北部的荆棘灌木丛中，植物菌根对土地利用变化具有弹性

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-15 DOI: 10.1016/j.jaridenv.2025.105384

Gabriela Blanco-Valenzuela , Fernanda Núñez S Palomares , Andrés Ochoa-Meza , Francisco Molina-Freaner , Ana Armenta-Calderon , M. Cristina Peñalba , Clara Tinoco-Ojanguren

{"title":"Plant mycorrhization is resilient to land use change in a thornscrub in northwestern Mexico","authors":"Gabriela Blanco-Valenzuela , Fernanda Núñez S Palomares , Andrés Ochoa-Meza , Francisco Molina-Freaner , Ana Armenta-Calderon , M. Cristina Peñalba , Clara Tinoco-Ojanguren","doi":"10.1016/j.jaridenv.2025.105384","DOIUrl":"10.1016/j.jaridenv.2025.105384","url":null,"abstract":"<div><div>Land-use change, such as the conversion of thornscrub to buffelgrass (<em>Cenchrus ciliaris</em>) pastures, poses a significant threat to natural plant communities in northwestern Mexico. However, its effects on arbuscular mycorrhizal fungi (AMF) associations with native plant species remain poorly understood. This study evaluated the impact of such conversion on AMF associations in four native plant species by comparing soil and root samples from a natural thornscrub and a buffelgrass pasture in Sonora, Mexico, during both wet and dry seasons. Mycorrhizal variables measured included root mycorrhizal colonization, visual density, root hair density, spore density, spore viability, AMF spore morphotype diversity, and soil nutrient content. Most mycorrhizal variables did not differ significantly between the two habitats. When significant differences were observed, values tended to be higher in the pasture, possibly reflecting the more stressful conditions of this habitat. A total of 27 AMF spore morphotypes were identified, with a greater number found in the pasture (22) compared to the thornscrub (7); only two morphotypes were shared between the two habitats. These findings suggest that AMF associations in thornscrub are resilient to buffelgrass conversion, with increased mycorrhization and spore density likely linked to the stress conditions of the pasture and dry season.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105384"},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829137","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

Developing aeolian sand spectral index using multispectral imagery and machine learning models: A representative case study in Iraq 利用多光谱图像和机器学习模型开发风化沙光谱指数：伊拉克代表性案例研究

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-14 DOI: 10.1016/j.jaridenv.2025.105382

Ahmed H. Al-Sulttani , Ehsan Ali Al-Zubaidi , Furkan Rabee , Ghadeer F. Al-Kasoob , Khairul Nizam Abdul Maulud , Hashem Shafik Shakir , Zaher Mundher Yaseen

{"title":"Developing aeolian sand spectral index using multispectral imagery and machine learning models: A representative case study in Iraq","authors":"Ahmed H. Al-Sulttani , Ehsan Ali Al-Zubaidi , Furkan Rabee , Ghadeer F. Al-Kasoob , Khairul Nizam Abdul Maulud , Hashem Shafik Shakir , Zaher Mundher Yaseen","doi":"10.1016/j.jaridenv.2025.105382","DOIUrl":"10.1016/j.jaridenv.2025.105382","url":null,"abstract":"<div><div>Aeolian and drifting sand are major environmental problems in arid and semi-arid regions such as Iraq, as they pose an increasing risk of land degradation and desertification due to climate change and human activities. A spectral index was proposed and studies to detect aeolian sand and monitor changes in the Najaf-Samawah Field in Iraq region. The research evaluated several machine learning (ML) models performed on a binary classification of Landsat OLI data. Different libraries, including LibSVM, LibLINEAR, and generalized linear model (GLM), were used to develop an accurate spectral aeolian and drifting sand index (DSI) in two forms with a complete equation (DSI-C) and the simplified and reduced equation (DSI-R). The Landsat OLI reflectance values generated 15 Normalized Differences (ND), and nine ML models were implemented. The most highly weighted NDs were selected from the 15 trained NDs. The accuracy assessments with other spectral sand indices showed that the DSI-C and DSI-R have significant accuracy and results in detecting aeolian sand. The study presented a simple methodology product for mapping aeolian sand. Quantitatively, the proposed DSI-R attained an overall accuracy, average Kappa, and average F-score of 93.617 %, 87.233 %, and 93.331 %, respectively.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105382"},"PeriodicalIF":2.6,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829135","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

Effects of Megathyrsus maximus invasion and NPK fertilizer addition on the regeneration of native plants in dry seasonal forests 大水杉入侵与氮磷钾施肥对旱季森林原生植物更新的影响

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-11 DOI: 10.1016/j.jaridenv.2025.105383

Larisse Bianca Soares Pereira , Henarmmany Oliveira , Layla Fernanda Sousa e Costa , Kleber Napoleão Nunes de Oliveira Barros , Flávia Carolina Lins Silva , Marcus Vinícius Loss Sperandio , Cláudia Ulisses

{"title":"Effects of Megathyrsus maximus invasion and NPK fertilizer addition on the regeneration of native plants in dry seasonal forests","authors":"Larisse Bianca Soares Pereira , Henarmmany Oliveira , Layla Fernanda Sousa e Costa , Kleber Napoleão Nunes de Oliveira Barros , Flávia Carolina Lins Silva , Marcus Vinícius Loss Sperandio , Cláudia Ulisses","doi":"10.1016/j.jaridenv.2025.105383","DOIUrl":"10.1016/j.jaridenv.2025.105383","url":null,"abstract":"<div><div>The modification of natural landscapes for agriculture is common in Brazilian semiarid regions. The cultivation of exotic species and the use of chemical fertilization, without prior soil analysis, negatively impact fertility and contribute to the abandonment of these areas. Nutritional imbalance favors invasion and consequently hinders succession processes. In this study, we investigated the impact of nutritional enrichment combined with invasion on native plants. The field experiment was completely randomized, in a 4 × 2 factorial (nutrient x invasion) and 6 replicates. Samples of soil and native leaves were collected and evaluated chemically and biochemically, respectively. The interaction between nutrients and <em>M. maximus</em> invasion did not alter soil chemistry due to leaching, high resource uptake, and soil activity. The presence of <em>M. maximus</em> increased competition under natural nutritional conditions, affecting the total soluble carbohydrate content in <em>C. prasiifolia</em> and the pigment and proline content in <em>P. varians</em>, as well as the enzymatic activity in response to oxidative stress in <em>P. varians</em> and <em>S. maculata.</em> Abandoned pastures with different soil nutritional conditions may favor the invasion of <em>M. maximus</em> in dry areas, outcompeting native species, compromising their establishment and development.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105383"},"PeriodicalIF":2.6,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816115","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 spring planting and attribution of ponderosa pine seedling survival in a hot and dry subregion of the southwestern United States 美国西南部干热亚区黄松春季种植试验及幼苗存活归因

IF 2.6 3区环境科学与生态学

Journal of Arid Environments Pub Date : 2025-04-10 DOI: 10.1016/j.jaridenv.2025.105381

Matthew D. Petrie

{"title":"Experimental spring planting and attribution of ponderosa pine seedling survival in a hot and dry subregion of the southwestern United States","authors":"Matthew D. Petrie","doi":"10.1016/j.jaridenv.2025.105381","DOIUrl":"10.1016/j.jaridenv.2025.105381","url":null,"abstract":"<div><div>Artificial regeneration (i.e., seedling planting) will be required to maintain dry coniferous forests in the southwestern United States (SWUS). I conducted a 3-year (2022–2024) spring planting experiment in one burned and three unburned ponderosa pine forests in southern Nevada, USA, a location with notably hot and dry summers. Instrumented experimental sites supported the mechanistic assessment of meteorological and environmental controls on survival. Low precipitation, low soil moisture, and high air and soil temperatures distinguished very low seedling survival (<span><math><mo><</mo></math></span>20 %), which occurred in the burned forest and in unburned forests during low precipitation years, often in the first 40 days following planting. Lower (≤40 %) versus higher (<span><math><mo>></mo></math></span>65 %) survival was distinguished by precipitation, different forest environments, and 10–30 day variation in planting date. Higher survival (36–100 %) in 2023 continued through 2024, especially for earlier planted seedlings. Thus, alterations to the timing of spring planting may provide benefits to seedling survival. This experiment underscores the influence of meteorological and environmental variation on artificial regeneration, and portends to increasing survival restriction – and reliance on precipitation events – as warm seasons in SWUS forests increasingly resemble those of southern Nevada.</div></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":"229 ","pages":"Article 105381"},"PeriodicalIF":2.6,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808446","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