Vanessa M. Schroeder , Dustin D. Johnson , W. Douglas Robinson , David W. Bohnert , Jonathan B. Dinkins
{"title":"放牧对食物网动态的影响:山艾草生态系统中观捕食者和啮齿动物","authors":"Vanessa M. Schroeder , Dustin D. Johnson , W. Douglas Robinson , David W. Bohnert , Jonathan B. Dinkins","doi":"10.1016/j.rama.2025.06.007","DOIUrl":null,"url":null,"abstract":"<div><div>We used a network of motion-sensitive cameras and weekly transect surveys during a replicated cattle grazing experiment to assess the influence of dormant season grazing, spring-summer rotational grazing, and grazing exclusion on the activity of rodent, meso-mammalian, lagomorph and reptilian species in southeast Oregon, USA, from 2018–2021. Activity of chipmunks (<em>Neotamias</em> spp.) and mice (subfamily <em>Neotominae</em>), was lower in moderate intensity rotationally grazed pastures compared to nongrazed pastures. When considering differences with respect to rotation (spring or summer) or cattle presence, we found evidence for reduced activity of most rodents (including chipmunks, ground squirrels [<em>Urocitellus</em> spp.], kangaroo rats [family <em>Heteromyidae</em>], and mice), with the largest reductions during summer grazing. We did not observe a direct effect of grazing on meso-predators, including American badgers (<em>Taxidea taxus</em>), and coyotes (<em>Canis latrans</em>). Perennial forb cover was associated with increased ground squirrel activity and coyote and badger occupancy, suggesting indirect effects stemming from vegetation food resources. Our results suggest grazing influences the activity and occupancy of many species within the sagebrush ecosystem food web, which has implications for several species of management concern. As the sagebrush ecosystem continues to shrink, managers should consider the influences of grazing management on the dynamics of species interactions, including predator-prey relationships.</div></div>","PeriodicalId":49634,"journal":{"name":"Rangeland Ecology & Management","volume":"102 ","pages":"Pages 172-185"},"PeriodicalIF":2.4000,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of Cattle Grazing on Food Web Dynamics: Meso-predators and Rodents in a Sagebrush Ecosystem\",\"authors\":\"Vanessa M. Schroeder , Dustin D. Johnson , W. Douglas Robinson , David W. Bohnert , Jonathan B. Dinkins\",\"doi\":\"10.1016/j.rama.2025.06.007\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We used a network of motion-sensitive cameras and weekly transect surveys during a replicated cattle grazing experiment to assess the influence of dormant season grazing, spring-summer rotational grazing, and grazing exclusion on the activity of rodent, meso-mammalian, lagomorph and reptilian species in southeast Oregon, USA, from 2018–2021. Activity of chipmunks (<em>Neotamias</em> spp.) and mice (subfamily <em>Neotominae</em>), was lower in moderate intensity rotationally grazed pastures compared to nongrazed pastures. When considering differences with respect to rotation (spring or summer) or cattle presence, we found evidence for reduced activity of most rodents (including chipmunks, ground squirrels [<em>Urocitellus</em> spp.], kangaroo rats [family <em>Heteromyidae</em>], and mice), with the largest reductions during summer grazing. We did not observe a direct effect of grazing on meso-predators, including American badgers (<em>Taxidea taxus</em>), and coyotes (<em>Canis latrans</em>). Perennial forb cover was associated with increased ground squirrel activity and coyote and badger occupancy, suggesting indirect effects stemming from vegetation food resources. Our results suggest grazing influences the activity and occupancy of many species within the sagebrush ecosystem food web, which has implications for several species of management concern. As the sagebrush ecosystem continues to shrink, managers should consider the influences of grazing management on the dynamics of species interactions, including predator-prey relationships.</div></div>\",\"PeriodicalId\":49634,\"journal\":{\"name\":\"Rangeland Ecology & Management\",\"volume\":\"102 \",\"pages\":\"Pages 172-185\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2025-07-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rangeland Ecology & Management\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1550742425000740\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rangeland Ecology & Management","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1550742425000740","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
Effects of Cattle Grazing on Food Web Dynamics: Meso-predators and Rodents in a Sagebrush Ecosystem
We used a network of motion-sensitive cameras and weekly transect surveys during a replicated cattle grazing experiment to assess the influence of dormant season grazing, spring-summer rotational grazing, and grazing exclusion on the activity of rodent, meso-mammalian, lagomorph and reptilian species in southeast Oregon, USA, from 2018–2021. Activity of chipmunks (Neotamias spp.) and mice (subfamily Neotominae), was lower in moderate intensity rotationally grazed pastures compared to nongrazed pastures. When considering differences with respect to rotation (spring or summer) or cattle presence, we found evidence for reduced activity of most rodents (including chipmunks, ground squirrels [Urocitellus spp.], kangaroo rats [family Heteromyidae], and mice), with the largest reductions during summer grazing. We did not observe a direct effect of grazing on meso-predators, including American badgers (Taxidea taxus), and coyotes (Canis latrans). Perennial forb cover was associated with increased ground squirrel activity and coyote and badger occupancy, suggesting indirect effects stemming from vegetation food resources. Our results suggest grazing influences the activity and occupancy of many species within the sagebrush ecosystem food web, which has implications for several species of management concern. As the sagebrush ecosystem continues to shrink, managers should consider the influences of grazing management on the dynamics of species interactions, including predator-prey relationships.
期刊介绍:
Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journal''s mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes.
Rangelands represent approximately 50% of the Earth''s land area and provision multiple ecosystem services for large human populations. This expansive and diverse land area functions as coupled human-ecological systems. Knowledge of both social and biophysical system components and their interactions represent the foundation for informed rangeland stewardship. Rangeland Ecology & Management uniquely integrates information from multiple system components to address current and pending challenges confronting global rangelands.