Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Horticulture (21)
- Ecology and Evolutionary Biology (11)
- Biodiversity (3)
- Arts and Humanities (2)
- Earth Sciences (2)
-
- Forest Sciences (2)
- History (2)
- Physical Sciences and Mathematics (2)
- Biology (1)
- Bryology (1)
- Environmental Health and Protection (1)
- Environmental Monitoring (1)
- Environmental Sciences (1)
- Evolution (1)
- Forest Management (1)
- Genetics (1)
- Genetics and Genomics (1)
- Genomics (1)
- Geology (1)
- Integrative Biology (1)
- Natural Resources and Conservation (1)
- Other Ecology and Evolutionary Biology (1)
- Other Environmental Sciences (1)
- Other Forestry and Forest Sciences (1)
- Plant Biology (1)
- Plant Breeding and Genetics (1)
- Population Biology (1)
- Institution
- Publication Year
- Publication
- Publication Type
Articles 1 - 30 of 57
Full-Text Articles in Botany
Depth And Soil Physical Context Govern Soil Organic Carbon, While Woody Cover Moderates Native Vegetation Relationships In California Rangelands, Dabid Zuniga Garcia
Depth And Soil Physical Context Govern Soil Organic Carbon, While Woody Cover Moderates Native Vegetation Relationships In California Rangelands, Dabid Zuniga Garcia
Cal Poly Humboldt theses and projects
Soil organic carbon (SOC) is central to soil function and an important component of climate mitigation in rangeland ecosystems, but the controls on SOC across California’s working rangelands remain understudied. Using data from Point Blue Conservation Science’s Rangeland Monitoring Network, this study evaluated how soil properties, vegetation structure, and recent climate relate to SOC concentration at depths of 0–10 cm and 10–40 cm across 145 ranches spanning four California regions. Linear mixed-effects models showed that SOC was consistently higher in topsoil than subsoil and highest in coastal sites relative to interior valleys. Bulk density was the strongest negative predictor of …
A Vascular Flora Of Ladd Canyon, Santa Ana Mountains, Orange And Riverside Counties, California, Daniel P. Donovan, Amanda E. Fisher
A Vascular Flora Of Ladd Canyon, Santa Ana Mountains, Orange And Riverside Counties, California, Daniel P. Donovan, Amanda E. Fisher
Aliso: A Journal of Systematic and Floristic Botany
The Santa Ana Mountains are a coastal range on the border of Orange and Riverside counties in southern California. Ladd Canyon, covering 18.2 km2 in the Cleveland National Forest, is a botanical black hole relative to the rest of the Santa Ana Mountains because of limited access. It is dominated by chaparral and coastal sage scrub and includes significant knobcone pine (Pinus attenuata) stands and riparian woodland. Features that make it an intriguing area to study include the only serpentine soil in the Santa Ana Mountains, large tracts of habitat that have no recorded fire history, steep …
A Flora Of Coyote Ridge And Flat, Inyo County, California, Martin D. Purdy
A Flora Of Coyote Ridge And Flat, Inyo County, California, Martin D. Purdy
Aliso: A Journal of Systematic and Floristic Botany
California’s Sierra Nevada contains a disproportionate share of the state’s plant diversity and is one of the most floristically diverse regions of its size in the United States. The high Sierra Nevada, in particular, has been identified as an important center of species richness and endemism within the State. Anthropogenic climate warming is expected to disproportionately affect mountain ecosystems, and models have predicted habitat contraction and extirpation for many alpine plant taxa. A specimen-based inventory of the vascular plants and bryophytes of Coyote Ridge and Flat was conducted to establish baseline data for one such sensitive alpine and subalpine area. …
A Vascular Flora Of The Southern Inyo Mountains, Inyo County, California, Maria J. Jesus
A Vascular Flora Of The Southern Inyo Mountains, Inyo County, California, Maria J. Jesus
Aliso: A Journal of Systematic and Floristic Botany
The Inyo Mountains in Inyo County, California, are an arid mountain range located between the eastern Sierra Nevada and Death Valley National Park. The study site is ca. 433 km2 (167 sq mi), ranging in elevation from 549 to 2955 m (1800 to 9694 ft), and comprises the southern extent of the Inyo Mountains where the Great Basin Desert and Mojave Desert bioregions meet. This area had been poorly represented by botanical collections despite an abundance of distinctive biogeographic features and high diversity in rare and endemic plant species. The objectives of this study were to complete a specimen-based, …
Vascular Floristic Study Of The Piute Mountains, Kern County, California, Courtney Matzke
Vascular Floristic Study Of The Piute Mountains, Kern County, California, Courtney Matzke
CGU Theses & Dissertations
This study describes the vascular flora of the Piute Mountains, located at the southern terminus of the Sierra Nevada in Kern County, California. The study area covers ca. 543 square km (210 square mi), with elevations ranging from 777 m (2,550 ft) to 2,562 m (8,406 ft) at Piute Peak. Though situated in the Sierra Nevada ecoregion, the Piute Mountains lie near the Mojave Desert, Central Valley, and southern California mountains, resulting in a highly diverse, unique flora with plant taxa from each of these regions co-occurring. The study area encompasses varied topography with an assortment of geologic features including …
A Vascular Flora Of The Nopah Range, Inyo County, California, Carolyn J. Mills
A Vascular Flora Of The Nopah Range, Inyo County, California, Carolyn J. Mills
CGU Theses & Dissertations
The Nopah Range is an arid mountain range of the northern Mojave Desert located just east of Death Valley National Park in southeastern Inyo County, California. The study site is ca. 490 sq. km (189 sq. mi), with elevations ranging from 234 m (767 ft) to 1,949 m (6,394 ft) and includes the Nopah Range as well as portions of the California, Chicago, and Pahrump valleys. The objective of the study was to complete a specimen-based inventory of the vascular plants resulting in the production of an annotated checklist, and to assess the status of rare plant species and possible …
List Of Bryophytes Collected In The Northern Last Chance Range And Eureka Valley, Death Valley National Park, Sarah J. De Groot
List Of Bryophytes Collected In The Northern Last Chance Range And Eureka Valley, Death Valley National Park, Sarah J. De Groot
Aliso: A Journal of Systematic and Floristic Botany
A list of bryophytes occurring naturally in northern Death Valley National Park is presented. So far, 41 taxa have been documented, representing seven families and 24 genera. One species, Jaffueliobryum wrightii, is considered rare by the California Native Plant Society.
Vascular Flora Of Adobe Valley And Surrounding Hills, Mono County, California, Sophie E. Winitsky
Vascular Flora Of Adobe Valley And Surrounding Hills, Mono County, California, Sophie E. Winitsky
Aliso: A Journal of Systematic and Floristic Botany
Adobe Valley and the Adobe Hills lie east of the Sierra Nevada in Mono County, California, and are within the Great Basin Floristic Province. The flora of Adobe Valley and the surrounding hills is influenced by the Great Basin Desert to the east, the Sierra Nevada to the west and the northern Mojave Desert to the south. Adobe Valley is surrounded by the Adobe Hills, Benton Range and Glass Mountain region, creating a circular closed basin with many small tributaries feeding into it. This topography contributes to the creation of a rare wetland complex, including alkali meadows, marshes, and lakes …
Plantae Coulterianae: Thomas Coulter’S Californian Exsiccata, Gary D. Wallace
Plantae Coulterianae: Thomas Coulter’S Californian Exsiccata, Gary D. Wallace
Aliso: A Journal of Systematic and Floristic Botany
An account of the extent, diversity, and importance of the Californian collections of Thomas Coulter in the herbarium (TCD) of Trinity College, Dublin, Ireland, is presented here. It is based on examination of collections in TCD, several other collections available online, and referenced literature. Additional information on historical context, content of herbarium labels and annotations is included. Coulter’s collections in TCD are less well known than partial duplicate sets at other herbaria. He was the first botanist to cross the desert of southern California to the Colorado River. Coulter’s collections in TCD include not only 60 vascular plant specimens previously …
Vascular Flora Of The Upper Rock Creek Watershed, Eastern Sierra Nevada, California, Joy D. England
Vascular Flora Of The Upper Rock Creek Watershed, Eastern Sierra Nevada, California, Joy D. England
Aliso: A Journal of Systematic and Floristic Botany
The upper Rock Creek watershed is located on the east slope of the Sierra Nevada in Inyo and Mono counties. It is ca. 36.5 square miles (94.5 square km) in area and varies in elevation from 7360 to 13,750 ft (2243 to 4191 m). Quaternary glacial erosion and deposition produced striking landscape features, including alpine fell fields and numerous small lakes. Previous floristic inventories in Rock Creek recorded a combined 396 minimum-rank taxa (species, subspecies, varieties, named hybrids) but were restricted to Little Lakes Valley and the surrounding high areas. An updated, annotated checklist of vascular plants is presented, based …
New Additions To The Flora Of San Nicolas Island, Ventura County, California, Benjamin E. Carter, William F. Hoyer Iii, Jonathan Dunn, C. Matt Guilliams
New Additions To The Flora Of San Nicolas Island, Ventura County, California, Benjamin E. Carter, William F. Hoyer Iii, Jonathan Dunn, C. Matt Guilliams
Aliso: A Journal of Systematic and Floristic Botany
Ongoing collecting efforts on San Nicolas Island have substantially increased the number of plant species documented from the island. Here we report thirty-one plants previously unrecorded from the island. The list includes six eudicots, one monocot, four liverworts and twenty mosses. Five of these species are understood to be introduced on San Nicolas and the remainder are believed to be native. The native vascular plants are Logfia filaginoides, Cistanthe maritima and Muhlenbergia microsperma. Of the twenty-four new bryophytes, one—Asterella bolanderi—is the first record from the Channel Islands. Specific ecological and locality information are provided for the …
Natural And Anthropogenic Drivers Of Tree Evolutionary Dynamics, Brandon M. Lind
Natural And Anthropogenic Drivers Of Tree Evolutionary Dynamics, Brandon M. Lind
Theses and Dissertations
Species of trees inhabit diverse and heterogeneous environments, and often play important ecological roles in such communities. As a result of their vast ecological breadth, trees have become adapted to various environmental pressures. In this dissertation I examine various environmental factors that drive evolutionary dynamics in threePinusspecies in California and Nevada, USA. In chapter two, I assess the role of management influence of thinning, fire, and their interaction on fine-scale gene flow within fire-suppressed populations of Pinus lambertiana, a historically dominant and ecologically important member of mixed-conifer forests of the Sierra Nevada, California. Here, I find evidence …
Effects Of Habitat Restoration On Soil Retention On Santa Rosa Island, Michael Perez, Kathryn Mceachern, Ken Niessen
Effects Of Habitat Restoration On Soil Retention On Santa Rosa Island, Michael Perez, Kathryn Mceachern, Ken Niessen
STAR Program Research Presentations
Ranching began on Santa Rosa Island in the 1840’s, consequently introducing nonnative megafauna that put novel selective grazing pressures on endemic plant species. Their movement patterns also altered substrate integrity as the land became denuded of any stabilizing vegetation. Dense groves of island oak (Q. tomentella) are known to aid in sediment deposition and retention. The groves also function to collect water during periods of intense fog common to the island. This experiment sought to determine whether sediment is being lost or deposited on a ridge in the middle of the island containing a grove of Q. tomentella …
A Vascular Flora Of The Kiavah Wilderness, Scodie Mountains, Kern County, California, Erika M. Gardner
A Vascular Flora Of The Kiavah Wilderness, Scodie Mountains, Kern County, California, Erika M. Gardner
Aliso: A Journal of Systematic and Floristic Botany
Congress designated the Kiavah Wilderness in 1994 under the California Desert Protection Act. It is located in the Scodie Mountains in Kern County, ca. 24 km (15 mi) east of Lake Isabella and 24 km (15 mi) west of Ridgecrest, and encompasses a total of 137 mi2 (354 km2) with elevations ranging from 1000 to 2200 m (3500–7294 ft). The Wilderness is ecologically important because it occurs in a transition zone between two floristic provinces, the Sierra Nevada of the California Floristic Province and the Mojave Desert of the Desert Province. It is of cultural significance because …
Robert Folger Thorne—A Botanical Legacy
Robert Folger Thorne—A Botanical Legacy
Aliso: A Journal of Systematic and Floristic Botany
Robert F. Thorne, distinguished botanist and former curator of the herbarium at Rancho Santa Ana Botanic Garden, left a rich botanical legacy. Contributions featured include a list of his articles appearing in Aliso: A Journal of Systematic and Evolutionary Botany, as well a list of plant taxa named for him.
A New Species Of Linanthus (Polemoniaceae) From San Bernardino County, California, Naomi S. Fraga, Duncan S. Bell
A New Species Of Linanthus (Polemoniaceae) From San Bernardino County, California, Naomi S. Fraga, Duncan S. Bell
Aliso: A Journal of Systematic and Floristic Botany
Linanthus bernardinus is described as new from San Bernardino County, California. It is morphologically similar to L. killipii and L. orcuttii subsp. pacificus but differs from plants of these taxa in height, corolla length, seed morphology, and habitat. Linanthus bernardinus can be found growing in vernally moist areas within Joshua tree woodland, often in shallow depressions, or on gentle slopes, in decomposed granite sand that is surrounded by large granite boulder fields.
Euphorbia (Subgen. Chamaesyce Sect. Anisophyllum) Jaegeri, A Shrubby New Species From The Deserts Of California, United States, Victor W. Steinmann, James M. André
Euphorbia (Subgen. Chamaesyce Sect. Anisophyllum) Jaegeri, A Shrubby New Species From The Deserts Of California, United States, Victor W. Steinmann, James M. André
Aliso: A Journal of Systematic and Floristic Botany
Euphorbia jaegeri (Euphorbiaceae), an endemic to southeastern California, United States, is described as new and illustrated with photographs. It is known from two general locations, one in the Orocopia Mountains (Riverside County) and the other in the Marble Mountains and adjacent Bristol Mountains (San Bernardino County). The habitat is desert scrub on rocky hillsides and along arroyos, primarily in rock crevices or gravelly soils, at elevations from approximately 600 to 850 m. The new species belongs to Euphorbia subgen. Chamaesyce sect. Anisophyllum. It is distinguished by the combination of a shrubby habit and involucral appendages that are deeply parted …
A Revision Of Erythranthe Montioides And Erythranthe Palmeri (Phrymaceae), With Descriptions Of Five New Species From California And Nevada, Usa, Naomi S. Fraga
A Revision Of Erythranthe Montioides And Erythranthe Palmeri (Phrymaceae), With Descriptions Of Five New Species From California And Nevada, Usa, Naomi S. Fraga
Aliso: A Journal of Systematic and Floristic Botany
The genus Erythranthe (Phrymaceae) continues to be a source of floristic novelty, especially in the American West, as evidenced by recent discoveries presented here. Two species in Erythranthe section Paradantha (E. montioides and E. palmeri) have long been a source of taxonomic confusion. Recent research reveals that a total of ten species have previously been treated as part of these two species. Here I present a revised taxonomy for E. montioides and E. palmeri including clarification of species circumscriptions (E. montioides, E. palmeri), recognition of three species that have previously been treated as synonyms …
A New Variety Of Lomatium Ravenii (Apiaceae) From The Northern Great Basin And Adjacent Owyhee Region, Kimberly M. Carlson, Donald H. Mansfield, James F. Smith
A New Variety Of Lomatium Ravenii (Apiaceae) From The Northern Great Basin And Adjacent Owyhee Region, Kimberly M. Carlson, Donald H. Mansfield, James F. Smith
Aliso: A Journal of Systematic and Floristic Botany
Variability in the group of Lomatium species comprising L. nevadense, L. ravenii, and L. foeniculaceum has led to conflicting classification schemes. While some taxonomists have treated L. ravenii as a distinct species made up of all the populations from California, Nevada, Idaho, and Oregon, others considered L. ravenii to be nothing more than a morphological extreme of L. nevadense. We examined morphological and phylogenetic data from across the range of L. ravenii, concluding that variation in the species warrants varietal distinction. Non-metric multidimensional scaling analysis of 29 populations shows two distinct groups—one from the vicinity of …
Ponderosa Pine Revisited, J. Robert Haller, Nancy J. Vivrette
Ponderosa Pine Revisited, J. Robert Haller, Nancy J. Vivrette
Aliso: A Journal of Systematic and Floristic Botany
We here recognize a new variety, Pinus ponderosa var. pacifica, in the Pacific portion of the species' distribution and present a new combination for Washoe pine as a variety, Pinus ponderosa var. washoensis. In this treatment, we reject the neotype of Pinus ponderosa selected by Lauria and designate instead the branch collected by David Douglas with mistletoe (Arceuthobium campylopodum) as lectotype for Pinus ponderosa. Table 1 compares the distinguishing characters of the North Plateau (typical) variety, the Pacific variety, and the Washoe variety of Pinus ponderosa with a closely related species, Pinus jeffreyi. Figure …
Nomenclatural Changes For Some Grasses In California. Ii., James P. Smith Jr., J. Travis Columbus
Nomenclatural Changes For Some Grasses In California. Ii., James P. Smith Jr., J. Travis Columbus
Aliso: A Journal of Systematic and Floristic Botany
Two additional nomenclatural changes are required for Poaceae treatments that will appear in the second edition of The Jepson Manual: Higher Plants of California. They are Elymus x gouldii and Festuca temulenta. The former corrects a violation of the rule in the International Code of Botanical Nomenclature involving the naming of hybrids, and the latter involves a widely occurring non-native grass in California traditionally assigned to Lolium.
A New Combination In Acmispon (Fabaceae: Loteae) For California, Luc Brouillet
A New Combination In Acmispon (Fabaceae: Loteae) For California, Luc Brouillet
Aliso: A Journal of Systematic and Floristic Botany
The new combination Acmispon argophyllus (A.Gray) Brouillet var. niveus (Greene) Brouillet is made.
Nomenclatural Changes For Some Grasses In California And The Muhlenbergia Clade (Poaceae), J. Travis Columbus, James P. Smith Jr.
Nomenclatural Changes For Some Grasses In California And The Muhlenbergia Clade (Poaceae), J. Travis Columbus, James P. Smith Jr.
Aliso: A Journal of Systematic and Floristic Botany
New combinations and names are here validated for ten grass (Poaceae) taxa in California for the forthcoming revision of The Jepson Manual. In addition, guided by recent molecular phylogenetic studies, ten non-California grass species are here transferred to Muhlenbergia (Chloridoideae: Cynodonteae) to achieve monophyly of the genus. Lolium, long known to be phylogenetically nested within Festuca, is here subsumed into Festuca, and the circumscription of Stipa is expanded to include all Stipeae (native and non-native) in California. In Stipeae, most currently recognized genera are not monophyletic. Attaining monophyly while bearing in mind identification for persons not expert …
The Vascular Flora Of The Owens Peak Eastern Watershed, Southern Sierra Nevada, California, Naomi S. Fraga
The Vascular Flora Of The Owens Peak Eastern Watershed, Southern Sierra Nevada, California, Naomi S. Fraga
Aliso: A Journal of Systematic and Floristic Botany
Owens Peak lies at the southern end of the Sierra Nevada within the Bureau of Land Management’s Owens Peak Wilderness Area in Kern County, California. The study site, ca. 50 square miles, encompasses Owens Peak’s eastern watershed, and ranges in elevation from 800–2600 m (2600–8400 ft). Granite rocks of the Sierra Nevada batholith underlie the study area. The eastern watershed of Owens Peak is botanically diverse, with 64 families, 230 genera, and 440 taxa currently documented. Floristic elements within the study area include the southern Sierra Nevada, Great Basin, and Mojave Desert. The flora previously was poorly documented, as discovered …
Vascular Plants Of The Whipple Mountains, Sarah J. De Groot
Vascular Plants Of The Whipple Mountains, Sarah J. De Groot
Aliso: A Journal of Systematic and Floristic Botany
The Sonoran and Mojave deserts meet just north of the Whipple Mountains, which are situated in southeast San Bernardino County, California, along the Colorado River and adjacent to Arizona. Vegetation from the Pleistocene to the present was inferred from previously published packrat midden data and the current floristic composition. Climate data suggest that summer rainfall is a factor underlying the vegetational differences between the western and eastern portions of the Sonoran desert. Plant collections in the area yielded primarily California Sonoran plants, but also several Mojave and Arizona Sonoran plants. A fair number of the Arizona Sonoran plants collected were …
Notes On Native Vascular Plants From Mima Mound-Vernal Pool Terrain And The Importance Of Preserving Coastal Terraces In Orange County, California, Richard E. Riefner Jr., Steve Boyd, Roy J. Shlemon
Notes On Native Vascular Plants From Mima Mound-Vernal Pool Terrain And The Importance Of Preserving Coastal Terraces In Orange County, California, Richard E. Riefner Jr., Steve Boyd, Roy J. Shlemon
Aliso: A Journal of Systematic and Floristic Botany
We report the following noteworthy collections of native vascular plants from mima mound fields in coastal Orange County, California: Deschampsia danthonioides, Lepidium strictum, and Sagina saginoides (new county records), Lepidium oblongum var. oblongum (previously excluded from the flora), Deinandra paniculata, Holocarpha virgata subsp. elongata, and Navarretia prostrata (new localities in the county), and Hordeum brachyantherum subsp. californicum (uncommon species of local interest). A herbarium study, preparation of voucher specimens, and a generalized distribution, facultative wetland status, and taxonomic notes, where appropriate, are cited for each taxon. An overview of the mima mound micro-relief associated with coastal …
New Records For The Vascular Flora Of The Santa Ana Mountains, California, Steve Boyd
New Records For The Vascular Flora Of The Santa Ana Mountains, California, Steve Boyd
Aliso: A Journal of Systematic and Floristic Botany
Documentation is provided for 23 taxa not included in other published floristic accounts of the Santa Ana Mountains. A representative voucher specimen and generalized distribution information are cited for each taxon.
Fraxinus Parryi, Nom. Nov., Of Nw Baja California, Mexico, Reid Moran
Fraxinus Parryi, Nom. Nov., Of Nw Baja California, Mexico, Reid Moran
Aliso: A Journal of Systematic and Floristic Botany
The common ash of NW Baja California is usually called Fraxinus trifoliata, as in Wiggins' (1980) flora of Baja California. That name is a misspelling of F. trifoliolat, which is a later homonym of F. rriJoliolara W. W. Smith (1916). The Baja Californian ash is therefore renamed Fraxinus parryi. It has also been misidentified as F. jonesii. The common name is "crucecilla". This ash barely extends into San Diego County, California.
Additions To The Vascular Flora Of San Clemente Island, Los Angeles County, California, With Notes On Clarifications And Deletions, Timothy S. Ross, Steve Boyd, Steve Junak
Additions To The Vascular Flora Of San Clemente Island, Los Angeles County, California, With Notes On Clarifications And Deletions, Timothy S. Ross, Steve Boyd, Steve Junak
Aliso: A Journal of Systematic and Floristic Botany
The number of vascular plant taxa reported from San Clemente Island, California, is briefly summarized. Recent additions to the vascular flora are presented and, with one exception, representative voucher specimens are cited as substantiation. Of the taxa di scussed, 68 are previously unreported taxa, and six are substantiations of previously dubious reports. An additional dozen taxa are cited in relation to clarifications or deletions. Based on current knowledge, we estimate the known flora to consist of 396 species with an additional 19 infraspecific taxa represented. Of these 415 taxa, 69.2% (272 speciesl15 additional subspecies or varieties) are considered indigenous to …
Population Structuring And Patterns Of Morphological Variation In Californian Styrax (Styracaceae), Peter Fritsch
Population Structuring And Patterns Of Morphological Variation In Californian Styrax (Styracaceae), Peter Fritsch
Aliso: A Journal of Systematic and Floristic Botany
Recent studies of genetic variation within and among populations and phylogenetic estimates have provided evidence bearing on the evolutionary history and taxonomy of Styrax in California (S. redivivus). In this paper, data from these studies are further analyzed and integrated with new data from morphology to gain insight into the nature and taxonomic significance of character variation within this species. Six morphological characters thought to be important in the delimitation of infraspecific taxa within S. redivivus were measured on 52 herbarium specimens and analyzed with Pearson correlations and multivariate methods. Five characters are significantly associated with latitude and …