Southwestern Naturalist最新文献_第9页

EXAMINING THE PAST, PRESENT, AND FUTURE OF AN ICONIC MOJAVE DESERT SPECIES, THE JOSHUA TREE (YUCCA BREVIFOLIA, YUCCA JAEGERIANA) 考察莫哈韦沙漠标志性物种约书亚树的过去、现在和未来，约书亚树(短叶丝兰，紫丝兰)

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2022-01-26 DOI: 10.1894/0038-4909-65.3-4.216

Jennifer L. Wilkening, S. Hoffmann, Felicia Sirchia

{"title":"EXAMINING THE PAST, PRESENT, AND FUTURE OF AN ICONIC MOJAVE DESERT SPECIES, THE JOSHUA TREE (YUCCA BREVIFOLIA, YUCCA JAEGERIANA)","authors":"Jennifer L. Wilkening, S. Hoffmann, Felicia Sirchia","doi":"10.1894/0038-4909-65.3-4.216","DOIUrl":"https://doi.org/10.1894/0038-4909-65.3-4.216","url":null,"abstract":"Abstract The Joshua tree (Yucca brevifolia, Y. jaegeriana) is a large, evergreen monocot distributed patchily across the southwestern United States. The plant occurs on alluvial fans, plains, and bajadas primarily in the Mojave Desert, but populations can also be found in the Great Basin and Sonoran Deserts. Named by the Mormon pioneers for the branching, supplicating arms reaching toward the sky, the species has become an emblematic symbol of the Mojave Desert for residents and visitors alike. Joshua trees inhabit cooler, moister microclimates within the larger desert macroclimate, and research has indicated the species may be vulnerable to future climatic regimes characterized by warmer and drier conditions. Here we present a concise review examining the past distribution, the current population status and threats, and the viability of the species under differing habitat and climate scenarios projected for the future. Additionally, we identify knowledge gaps to guide future research directions. Our results provide insight into management and conservation actions and contribute to a greater understanding of range-wide effects of ongoing environmental change on this species.","PeriodicalId":51157,"journal":{"name":"Southwestern Naturalist","volume":"65 1","pages":"216 - 229"},"PeriodicalIF":0.2,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48448469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

LESSER PRAIRIE-CHICKEN (TYMPANUCHUS PALLIDICINCTUS) USE OF MAN-MADE WATER SOURCES 小草原鸡(苍耳鼓鸡)对人工水源的利用

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2022-01-26 DOI: 10.1894/0038-4909-65.3-4.197

Trevor S. Gicklhorn, C. Boal, Philip K. Borsdorf

{"title":"LESSER PRAIRIE-CHICKEN (TYMPANUCHUS PALLIDICINCTUS) USE OF MAN-MADE WATER SOURCES","authors":"Trevor S. Gicklhorn, C. Boal, Philip K. Borsdorf","doi":"10.1894/0038-4909-65.3-4.197","DOIUrl":"https://doi.org/10.1894/0038-4909-65.3-4.197","url":null,"abstract":"Abstract The lesser prairie-chicken (Tympanuchus pallidicinctus) occurs in the semiarid southern Great Plains, a region prone to periods of drought. Researchers generally believe that lesser prairie-chickens are able to satisfy their water requirements through preformed water and metabolic processes, but also know that they experience low survival and reproductive success during periods of drought. We used motion-sensing cameras to assess lesser prairie-chicken visits to man-made free water sources over a 48-month period from March 2009 to February 2013 in west Texas. Our objective was to examine temporal patterns of water use by lesser prairie-chickens, and to explore life history phenology and environmental conditions that may influence the species' use of free water. We documented 1,439 visits to water sources by lesser prairie-chickens. Their use of water sources was high during the winter months (December–February; 92 visits per 100 trap days) but the highest average visit rate to water sources occurred during the lekking-nesting life stage (March–May; 146 visits per 100 trap days). Water use was lower during the brood-rearing stage (June–August; 71 visits per 100 trap days) and lowest during the brood dispersal and independence stage (September–November; 19 visits per 100 trap days). Water use was strongly associated with dew point (P < 0.0001) and temperature (P = 0.0002) but was not associated with precipitation (P = 0.1037). These data indicate life-cycle stage (e.g., lekking-nesting) and reduced availability of preformed water may influence use of free water sources by lesser prairie-chickens. Current climate models predict the region of the study area will experience increases in temperature and decreases in frequency of precipitation. The combined effect of this would be reduced environmental moisture. If the prediction of increasing aridity in the region holds true, man-made water sources may become a tool for conservation of the species.","PeriodicalId":51157,"journal":{"name":"Southwestern Naturalist","volume":"65 1","pages":"197 - 204"},"PeriodicalIF":0.2,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48299811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

WHITE-TAILED JACKRABBITS: A REVIEW AND CALL FOR RESEARCH 白尾大野兔:综述与研究呼吁

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-11-05 DOI: 10.1894/0038-4909-65.2.161

Shannon M Schlater, Jourdan M. Ringenberg, Nate Bickford, D. Ranglack

引用次数: 2

LATE PLEISTOCENE BIGHORN SHEEP DUNG FROM EAGLE CAVE, LOWER PECOS RIVER, TEXAS 德克萨斯州佩科斯河下游鹰洞晚更新世大角羊粪

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-11-03 DOI: 10.1894/0038-4909-65.2.152

J. Mead, C. Koenig, S. Black, C. Jurgens

引用次数: 3

COEFFICIENTS OF CONSERVATISM FOR THE FLORA OF THE MIDDLE RIO GRANDE FLOODPLAIN 中里奥格兰德河漫滩植物区系的保守性系数

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-11-03 DOI: 10.1894/0038-4909-65.2.141

Jessica L. Stern, Brook D. Herman, Jeffrey W. Matthews

引用次数: 0

NEST AREA SELECTION BY A RIVERINE AND AN ECOLOGICAL GENERALIST FRESHWATER TURTLE INHABITING AN URBAN SPRING SYSTEM 城市泉水系统中河流和生态多面手淡水龟的巢区选择

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-11-03 DOI: 10.1894/0038-4909-65.2.136

F. Rose, T. Simpson, Ivana Mali, R. Manning

引用次数: 1

FACTORS AFFECTING THE NUMBER OF ARMS ON A SAGUARO (CARNEGIEA GIGANTEA) 影响仙人掌臂数的因素

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-11-03 DOI: 10.1894/0038-4909-65.2.131

R. L. Hutto

引用次数: 0

AUGMENTATION OF NATURAL PREY REDUCES CATTLE PREDATION BY PUMA (PUMA CONCOLOR) AND JAGUAR (PANTHERA ONCA) ON A RANCH IN SONORA, MEXICO 在墨西哥索诺拉的一个牧场上，自然猎物的增加减少了美洲狮(美洲狮)和美洲虎(美洲豹)对牛的捕食

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-10-05 DOI: 10.1894/0038-4909-65.2.123

Ivonne Cassaigne, Ron W. Thompson, R. Medellín, M. Culver, A. Ochoa, Karla Vargas, Jack L. Childs, Manuel Galaz, J. Sanderson

引用次数: 0

DOES CLEISTOGAMOUS SELF-FERTILIZATION PROVIDE REPRODUCTIVE ASSURANCE AGAINST SEED PREDATION IN RUELLIA HUMILIS? 闭锁配花的自交受精是否提供了抵抗种子捕食的生殖保证?

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-10-05 DOI: 10.1894/0038-4909-65.2.116

J. Heywood, Stephanie A. Smith

{"title":"DOES CLEISTOGAMOUS SELF-FERTILIZATION PROVIDE REPRODUCTIVE ASSURANCE AGAINST SEED PREDATION IN RUELLIA HUMILIS?","authors":"J. Heywood, Stephanie A. Smith","doi":"10.1894/0038-4909-65.2.116","DOIUrl":"https://doi.org/10.1894/0038-4909-65.2.116","url":null,"abstract":"Mixed mating is thought to be adaptive in many species of flowering plants because self-fertilization provides reproductive assurance when pollinator densities are low. In species with dimorphic flowers, automatic self-fertilization by small cleistogamous (CL) flowers might also provide reproductive assurance by avoiding floral herbivory. We tested this hypothesis by quantifying flower production, seed production, and seed predation across an entire reproductive season within a Missouri population of Ruellia humilis, a species with mixed mating enforced by dimorphic flowers. The production of CL flowers was delayed relative to the production of open-pollinated chasmogamous (CH) flowers, consistent with the hypothesis of reproductive assurance. The rate of seed predation by larvae of the Noctuid moth Tripudia rectangula was much higher for fruits produced by CH flowers (69%) than by CL flowers (18%). Thus, although CH flowers self-pollinate in the absence of outcross pollen, CL flowers are a much more economical source of selfed seeds, not only because they require fewer resources but also because they experience much lower levels of seed predation. Seed predation by Tripudia is common in many other cleistogamous species of Ruellia native to the southern United States and Mexico and might have played a significant role in the evolution of CL flowers in this large genus.","PeriodicalId":51157,"journal":{"name":"Southwestern Naturalist","volume":"39 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41298900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

DISTYLY IN OREOCARYA CRASSIPES (BORAGINACEAE), AN ENDANGERED PLANT SPECIES 凤眼莲科珍珠莲属植物中的双丝体

IF 0.2 4区环境科学与生态学

Southwestern Naturalist Pub Date : 2021-08-31 DOI: 10.1894/0038-4909-65.2.105

J. Cohen, H. Rodríguez, H. Hutcheson

引用次数: 0