Rangeland Ecology & Management最新文献

{"title":"Patchy Response of Cheatgrass and Nontarget Vegetation to Indaziflam and Imazapic Applied After Wildfire in Sagebrush Steppe","authors":"Chad R. Kluender ,&nbsp;Matthew J. Germino ,&nbsp;Brynne E. Lazarus ,&nbsp;Ty Matthews","doi":"10.1016/j.rama.2024.08.029","DOIUrl":"10.1016/j.rama.2024.08.029","url":null,"abstract":"<div><div>Control of nonnative grasses is needed where they are altering fire regimes and degrading rangelands, such as cheatgrass (<em>Bromus tectorum</em>) invasion of perennial sagebrush-steppe communities. Aerial broadcast of the pre-emergent and postemergent herbicide imazapic has been used for decades over vast areas to control cheatgrass after fire. Recent small-scale studies indicate that the pre-emergent herbicide indaziflam may provide more enduring cheatgrass control. We evaluated landscape-level vegetation responses to indaziflam sprayed in replicated areas at 66.7 g · ai · ha⁻¹, with and without imazapic (66.1 g · ai · ha⁻¹) over almost 500 ha of sagebrush steppe. Herbicides were strip-sprayed by helicopter in the fall of 2019 in subregions that either 1) had burned in the summer of 2019 and had moderate background cheatgrass invasion, 2) had burned in 2011 and became heavily invaded, or 3) were burned in both 2011 and 2019 and had intermediate invasion. Tarps were temporarily deployed to intercept herbicides and create untreated controls. Overall, indaziflam + imazapic had greater initial control of cheatgrass, but by 2023, both treatments led to similar ∼17 percentage-point reductions in cheatgrass cover. Cheatgrass individuals that “escaped” the herbicide treatment grew exceptionally large and fecund. There were no reductions in cover in any native vegetation type, including biocrusts, and nontarget increases in cover were observed for 1) deep-rooted perennial grasses treated with indaziflam + imazapic in the 2011 burn subregion and 2) the shallow-rooted Sandberg bluegrass (<em>Poa secunda</em>) treated with either herbicide in the 2011 or 2011 + 2019 burn subregions. Consideration of burn legacies, pretreatment landscape condition, and evenness of treatment application may improve restoration outcomes and help prioritize management allocation, timing, and treatment expectations.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 432-440"},"PeriodicalIF":2.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746803","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}

{"title":"How Transhumance and Pastoral Commons Shape Plant Community Structure and Composition","authors":"Santiago A. Parra ,&nbsp;María Eugenia Ramos-Font ,&nbsp;Elise Buisson ,&nbsp;Ana Belén Robles ,&nbsp;Christel Vidaller ,&nbsp;Daniel Pavon ,&nbsp;Virginie Baldy ,&nbsp;Pablo Dominguez ,&nbsp;Francisco Godoy-Sepúlveda ,&nbsp;Hubert Mazurek ,&nbsp;Adrià Peña-Enguix ,&nbsp;Pau Sanosa-Cols ,&nbsp;Emmanuel Corcket ,&nbsp;Didier Genin","doi":"10.1016/j.rama.2024.10.002","DOIUrl":"10.1016/j.rama.2024.10.002","url":null,"abstract":"<div><div>Human practices and local governance effects on plant communities is a major question in socio-ecological sustainability. Pastoralists’ practices are intricately linked to governance systems and to their social-ecological context. For example, spatial-temporal mobility arises as a means to cope with seasonal variability of forage mass. This mobility might deeply influence plant biodiversity in rangelands by changing the ratio of perennial and annual life-forms. This study focuses on the commonly governed high-altitude rangelands of Castril, Santiago and Pontones (CSP) in North-Eastern Andalusia (Spain). CSP are grounded on three pastoralist communities who have self-organized into three different governance systems, that of Castril, Santiago and Pontones, for the use of three contiguous rangelands through extensive and transhumant grazing. Pastoralists undertaking Short-Distance Transhumance (SDT) or Long-Distance Transhumance (LDT) arrive on the CSP summer rangelands in early May and June respectively. We aim to identify plant community types within CSP to unravel the effect of community-based governances found in these three commons and the impact of the different transhumance types (SDT <em>vs.</em> LDT) on the plant community structure and composition. For this, during spring 2022 and 2023, we carried out 72 vegetation transects (point-contact monitoring methodology) spread in Castril, Santiago and Pontones encompassing the transhumance modalities. Plant data were analyzed through a Non-metric MultiDimensional Scaling (NMDS) ordination based on Bray-Curtis dissimilarity index. NMDS results revealed variability within the plant community distinguishing between perennials and annuals which belong to different phytosociological classes. This variability was partially related to transhumance modalities with LDT areas showing high density of perennials, whereas SDT areas showing high density of annuals belonging to the <em>Tuberarietea-guttatae</em> phytosociological class. Our findings suggest that LDT areas may provide more forage mass than SDT areas during summer drought.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 269-282"},"PeriodicalIF":2.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746790","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}

{"title":"An Inventory of Rangeland Wildlife in the Western United States","authors":"Elizabeth A. Leipold,&nbsp;Hunter S. Stier,&nbsp;Robert T. Haynam,&nbsp;Laura Robison,&nbsp;Aubrey R. Sullivan,&nbsp;Taylor L. Kaltenbach,&nbsp;Laura R. Dykstra,&nbsp;B. Ray Beaver,&nbsp;Morgan Monroe,&nbsp;Olivia G. Jakabosky,&nbsp;Lance B. McNew","doi":"10.1016/j.rama.2024.10.003","DOIUrl":"10.1016/j.rama.2024.10.003","url":null,"abstract":"<div><div>The absence of an accurate account of rangeland fauna is becoming increasingly limiting due to the threats created by climate change, biodiversity loss, energy extraction, and changing land use in the western United States, all of which pose new challenges for effective rangeland management. To address this lack of information and underscore the importance of rangelands for wildlife biodiversity, we conducted a rigorous, standardized, and comprehensive inventory of vertebrates inhabiting rangeland ecosystems in the western United States. We classified each species as rangeland dependent, rangeland associated, or nonrangeland associated based on their habitat, life history, and food requirements. Additionally, we identified primary habitat type associations, as well as the federal (USA) and international conservation statuses for each species. Our inventory included 1,593 species in the 21 western U.S. states, with 1,066 classified as rangeland species (429 rangeland dependent, 637 rangeland associated). Among rangeland species, 2% are listed as endangered under the U.S. Endangered Species Act, and 3% are considered either endangered or critically endangered according to the IUCN Red List. Our baseline inventory can be used in the development of management plans for rangeland ecosystems and to inspire conservation efforts for these critical ecosystems.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 170-176"},"PeriodicalIF":2.4,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745712","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}

{"title":"Exploring Rangeland Dynamics in Punjab, Pakistan: Integrating LULC, LST, and Remote Sensing for Ecosystem Analysis (2000–2020)","authors":"Li Feng ,&nbsp;Iram Naz ,&nbsp;Abdul Quddoos ,&nbsp;Zeeshan Zafar ,&nbsp;Menglan Gan ,&nbsp;Muhammad Aslam ,&nbsp;Zeenat Khadim Hussain ,&nbsp;Walid Soufan ,&nbsp;Khalid F. Almutairi","doi":"10.1016/j.rama.2024.09.008","DOIUrl":"10.1016/j.rama.2024.09.008","url":null,"abstract":"<div><div>Rangelands, covering 40% of Earth's land surface, play a crucial role in global ecosystem services and local livelihoods. In Punjab, Pakistan, these ecosystems face significant pressures from land-use changes and climate variability. This study aims to assess rangeland dynamics in Punjab's Khushab and Bhakkar districts from 2000 to 2020 using multitemporal satellite imagery and geospatial analysis. We integrated Land Use Land Cover (LULC) classification, Land Surface Temperature (LST) analysis, and vegetation indices to provide a comprehensive assessment of rangeland conditions. Random Forest and Support Vector Machine classifiers were employed for LULC mapping, achieving overall accuracies above 85%. Results reveal a significant decline in rangeland areas, from 9% (1 338.1 km²) in 2000 to 7% (983.7 km²) in 2020, primarily due to conversion to cropland. LST analysis showed an increase in both minimum (from 26.47 to 28.19°C) and maximum (from 44.60 to 47.44°C) temperatures. Vegetation indices indicated complex dynamics, with improvements in vegetation cover but periods of stress observed. These findings highlight the vulnerability of Punjab's rangelands to land-use changes and climate variability, emphasizing the need for targeted conservation strategies and sustainable land management practices. The study demonstrates the effectiveness of integrated remote sensing approaches in monitoring rangeland ecosystems and provides a foundation for evidence-based policy decisions to balance agricultural development with rangeland conservation in semiarid regions.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 377-388"},"PeriodicalIF":2.4,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746678","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}

{"title":"The Influence of Grazing on the Spatiotemporal Activity Patterns of a Primary Sage-Grouse Nest Predator","authors":"Nolan A. Helmstetter ,&nbsp;Courtney J. Conway ,&nbsp;Shane Roberts ,&nbsp;Paul D. Makela ,&nbsp;Lisette P. Waits","doi":"10.1016/j.rama.2024.08.012","DOIUrl":"10.1016/j.rama.2024.08.012","url":null,"abstract":"<div><div>Perturbations in ecological processes can occur when wildlife alter their spatiotemporal activity patterns to avoid human activities that they perceive as a risk. Such perturbations can have cascading effects throughout wildlife communities. For greater sage-grouse (<em>Centrocercus urophasianus</em>; hereafter sage-grouse), nest predation plays an important role in population dynamics. Domestic cattle (<em>Bos taurus</em>) grazing has been hypothesized to increase nest predation by reducing grass height, and therefore reducing nest concealment, which may facilitate nest detection by predators. Grass height is lower on grazed pastures, but sage-grouse nest success appears similar on pastures grazed at varying intensities in several recent studies. Any reductions in nest concealment caused by grazing could potentially be offset by a localized response of one or more nest predators to the presence of cattle (i.e., the cattle avoidance hypothesis). A reduction in nest predator density or relative use within pastures could explain similar patterns of nest success on pastures grazed at varying intensities. Also, wildlife can potentially partition themselves temporally to avoid risks associated with human activities. For example, a shift in diel activity patterns by nest predators in response to cattle could result in predators being active during portions of the day when they are less efficient at locating sage-grouse nests. Thus, the effects of grazing could be offset by a temporal avoidance of cattle by predators. We deployed motion sensor cameras across six pastures to evaluate whether coyotes (<em>Canis latrans</em>; a primary sage-grouse nest predator) altered spatiotemporal activity patterns in response to cattle. We found that the probability of detecting coyotes had a positive relationship with cattle detections at camera sites (β = 0.22; 95% CI = 0.14,0.30). We also found that coyotes did not shift their diel activity patterns in response to cattle being in the pastures. Thus, in our system, similar sage-grouse nest success among pastures with different grazing intensities cannot be explained by the cattle avoidance hypothesis, at least for coyotes.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 316-323"},"PeriodicalIF":2.4,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746801","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}

{"title":"Long-term Heavy Grazing Reduced the Tiller Number and Tiller Weight of Stipa breviflora Regulated by Endogenous Hormones","authors":"Jirong Qiao ,&nbsp;Shaoyu Li ,&nbsp;Jiahua Zheng ,&nbsp;Bin Zhang ,&nbsp;Feng Zhang ,&nbsp;Mengli Zhao","doi":"10.1016/j.rama.2024.09.006","DOIUrl":"10.1016/j.rama.2024.09.006","url":null,"abstract":"<div><div>Tillering—an important vegetative propagation process in grass whereby new shoots emerge laterally—regulates plant and ecosystem responses to anthropogenic disturbances, especially for desert steppe ecosystems. However, the response of desert steppe plant tillering to grazing and its related physiological mechanisms remain poorly understood. Here, we investigated the impact of long-term (15 yr) grazing intensity, including no grazing (CK), light grazing (LG), moderate grazing (MG), and heavy grazing (HG) on the tiller number, weight, photosynthesis rate, endogenous hormones, and antioxidant enzyme activities, as well as nutrient storage in tiller node and roots of desert steppe species <em>Stipa breviflora</em>. Compared with the CK, grazing reduced the above-ground biomass of <em>S. breviflora</em> in terms of tiller number and weight. Specifically, the tiller number under HG (33 per plant) was significantly lower than under CK (65 per plant). Tiller weight was significantly lower at each grazing intensity compared to CK. While LG improved the leaf net photosynthetic rate, HG decreased the leaf net photosynthetic rate, reduced sugar content, and increased crude protein. Grazing resulted in increased leaf endogenous auxin, gibberellin, and abscisic acid. Other measured factors were not affected by grazing disturbance. Structural equation modeling showed that grazing-induced decrease in tiller number can be co-explained by excess endogenous hormones (auxin, gibberellin, and abscisic acid), and lowered photosynthetic rate and crude protein and sugar content (soluble sugar, and reducing sugar), with standard total effect sizes of 0.51, 0.39 and 0.24, respectively. However, the decrease in tiller weight was only the result of endogenous hormone accumulation, with a standard total effect size of 0.60. Our results demonstrate that grazing negatively impacted tiller number and weight, but highlight different regulatory mechanisms, thus illustrating links between plant physiological characteristics, functional traits, and ecosystem functioning in response to grazing disturbance.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 324-331"},"PeriodicalIF":2.4,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746802","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}

{"title":"Snow Interacts With Defoliation Height to Drive Grassland Sustainability via Grass Biomass Maintenance","authors":"Hengkang Xu ,&nbsp;Nan Liu ,&nbsp;Gaowen Yang ,&nbsp;Hao Zhang ,&nbsp;Warwick B. Badgery ,&nbsp;Yingjun Zhang","doi":"10.1016/j.rama.2024.09.003","DOIUrl":"10.1016/j.rama.2024.09.003","url":null,"abstract":"<div><div>Snow amounts and duration are susceptible to climate change and may significantly affect plant diversity and biomass in grassland ecosystems. Yet, the combined effects of grassland use (type and intensity) and snow depth on plant diversity and productivity remain poorly understood. We established two complementary field experiments to explore the mechanisms driving the effects of grassland use (type and intensity) and snow manipulation on plant diversity and productivity in the meadow steppe. An experiment on grassland use type and snow manipulation showed that lower snow cover in winter reduced soil moisture in the snowmelt period, significantly increased the abundance of ammonia-oxidizing archaea and ammonia-oxidizing bacteria, and initiated nitrification earlier, resulting in the loss of soil available nitrogen, and then reduced the aboveground biomass of early grasses. An experiment on grassland mowing intensity and snow manipulation showed that moderate mowing intensity can restrain the loss of grass biomass and soil nutrients and maintain grassland sustainability in winters with less snow. Stochasticity has played a more important role in plant community assembly in higher intensity of grassland use. Based on our results, we recommend that optimal defoliation height can restrain the loss of grass biomass and soil nutrients and maintain grassland sustainability in winters with less snow. This study has potential benefits for optimizing sustainable production and maintaining ecosystem function under winter snowfall changes in the future across large regions of arid and semiarid grasslands.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 332-343"},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746675","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}

{"title":"Edge Effects Along Roadside Fuel Treatments in Sagebrush Steppe","authors":"Samuel “Jake” Price,&nbsp;Matthew J. Germino,&nbsp;Chloe R. Watt","doi":"10.1016/j.rama.2024.08.031","DOIUrl":"10.1016/j.rama.2024.08.031","url":null,"abstract":"<div><div>Increasing wildfire has motivated the construction of fuel breaks on many rangelands to improve prospects for wildfire suppression. However, the linear shape of fuel breaks greatly increases treatment perimeter:area and thus increased potential for edge effects, e.g., invasions by exotic plants. Potential for edge effects are further increased by the disturbances associated with fuel-break implementation. Fire risk in perennial-dominated and sagebrush-steppe rangelands are increased by exotic species, such as cheatgrass and other associated annuals, and therefore invasions after fuel-break implementation are problematic, yet have rarely been evaluated. Abundances of dominant invaders, cheatgrass and Russian thistle, were measured along treated and neighboring untreated edges in 40 paired plots along ∼61 km of 60-m wide fuel breaks. Fuel breaks were constructed using a variety of shrub-cutting and herbicide applications 1–4 yr before measurement. Generalized linear mixed effect models revealed that fractional cover significantly increased in treated compared with untreated areas by 0.02–0.12 for cheatgrass and 0–0.06 for Russian thistle within 9 m of treatment boundaries (on a scale of 0-1). We neither detected increased invasion in adjacent and untreated areas nor gradients of increasing invasion with proximity to treatment boundaries. Although these findings reveal invasions that were otherwise undetected across the entire 60 m width of fuel breaks, invasion levels did not surpass nominal management thresholds for fire behavior or risk of conversion to annual grasslands.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 155-159"},"PeriodicalIF":2.4,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745774","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}

{"title":"Rangeland Resource Assessment in the Aqmola Region of Kazakhstan","authors":"Kenneth E. Spaeth Jr. ,&nbsp;Mark A. Weltz ,&nbsp;Jason Nesbit ,&nbsp;Jiaguo Qi ,&nbsp;William A. Rutherford ,&nbsp;C. Jason Williams ,&nbsp;David Toledo ,&nbsp;Beth A. Newingham ,&nbsp;Gulnaz Iskakova ,&nbsp;Maira Kussainova ,&nbsp;Tlekles Yespolov","doi":"10.1016/j.rama.2024.09.004","DOIUrl":"10.1016/j.rama.2024.09.004","url":null,"abstract":"<div><div>The Republic of Kazakhstan in central Eurasia, is the ninth largest country in the world (2.7 million km²) and ranks fifth internationally in terms of land area of rangeland and pastureland. The spatial and temporal variability of rangeland conditions in Kazakhstan are not specifically known. The Kazakhstan government, as well as private land managers, require systematic knowledge of plant community dynamics and land use impacts, so national strategies can be customized to enhance, manage, and sustain the country's rangelands. Here, rangeland study sites from within the Aqmola region, Kazakhstan, were used to produce a framework for future rangeland monitoring, ecological site, and state and transition model development. A rangeland resource inventory (partially modelled after USDA-Natural Resources Conservation Service National Resource Inventory) sampled 51 locations across the Aqmola region. Classification and ordination were then used to explore field-based data to establish a methodology for identifying unique plant groupings or clusters for the development of provisional ecological sites. Ecological associations and potential sites were identified, whereby a prototypic state and transition model was developed that included five unique ecological states and their respective disturbance/restoration transition pathways. This paper highlights an international collaboration between USA and Kazakhstan rangeland professionals to develop a land management framework to conserve and sustain rangelands.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 389-398"},"PeriodicalIF":2.4,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Most Pinyon–Juniper Woodland Species Distributions Are Projected to Shrink Rather Than Shift Under Climate Change","authors":"Adam Noel ,&nbsp;Daniel R. Schlaepfer ,&nbsp;Brad J. Butterfield ,&nbsp;Megan C. Swan ,&nbsp;Jodi Norris ,&nbsp;Kim Hartwig ,&nbsp;Michael C. Duniway ,&nbsp;John B. Bradford","doi":"10.1016/j.rama.2024.09.002","DOIUrl":"10.1016/j.rama.2024.09.002","url":null,"abstract":"<div><div>Pinyon–juniper (PJ) woodlands are among the most widespread ecosystems in rangelands of western North America, supporting diverse wildlife habitat, recreation, grazing, and cultural/spiritual enrichment. Anticipating future distribution shifts under changing climate will be critical to climate adaptation and conservation efforts in these ecosystems. Here, we evaluate drivers of PJ tree species’ distributions and project changes in response to future climate change. We developed species distribution models with dryland-focused predictors to project environmental suitability changes across the entirety of three pinyon and six juniper species ranges. We identify areas of robust suitability change by combining suitability projections from multiple emissions scenarios and time periods. PJ species’ suitabilities respond to many temperature and moisture covariates expected to change in the future. Projected responses among PJ species are highly variable, ranging from modest declines with concurrent gains for overall little net change to wide-ranging declines with no gains for overall range contractions. Environmental suitability is projected to decline broadly across the arid United States Southwest and remain relatively stable across the northern Great Basin and Colorado Plateau. Our results suggest unique responses of PJ species to future climate change. We found that species were projected to experience more losses than gains in suitability, for overall range shrinks rather than shifts. Land managers have the capacity to increase woodland resilience to drought, and our results can inform rangeland-wide management planning and conservation efforts in PJ woodlands.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"98 ","pages":"Pages 454-466"},"PeriodicalIF":2.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}