Botany Commons^™

Winter Surveys Of Cotinus Obovatus (American Smoketree) In The Ozark Mountains, Gary R. Graves

Journal of the Arkansas Academy of Science

Cotinus obovatus (American smoketree) is a rare deciduous tree with a relictual distribution in southeastern North America. Efforts to map its fine-scale geographic distribution in the Ozark Mountains have been limited to the growing season when the distinctive blooming panicles and foliage facilitate detection in hardwood-cedar woodlands. I describe the physiognomic traits of leafless C. obovatus that permit effective population mapping in winter landscapes. Clumped growth and diagonally leaning stems facilitate detection at a distance. Bark texture, twig morphology, and sap odor confirm the identity of the tree at close range.

Assessing Spatio-Temporal Patterns Of Forest Decline Across A Diverse Landscape In The Klamath Mountains Using A 28-Year Landsat Time-Series Analysis, Drew S. Bost

Cal Poly Humboldt theses and projects

Rates of tree mortality in California and the Pacific Northwest have greatly increased in recent years, driven largely by pest and pathogen outbreaks as well as the effects of hotter, warmer droughts. While there have been a multitude of regional-scale assessments of mortality and forest decline, landscape-level studies are necessary to better identify forests that are most vulnerable to decline and to anticipate future changes. This need is particularly notable in the remote and little-studied mountains of northwest California, which are renowned for their diverse, heterogeneous vegetation types. A recent observation of elevated levels of Shasta red fir (Abies …

Jeweled Spider Flies (Eulonchus Tristis) Are Important Pollinators Of Iris Bracteata, A Rare Siskiyou Mountain Endemic, Jean-Paul E. Ponte

Cal Poly Humboldt theses and projects

Little is known about the pollination biology of the Pacific Coast Irises (Iris: series Californicae, hereafter PCI), especially who visits and pollinates their flowers. In general, Iris flowers are considered bee-pollinated, however, flies in the genus Eulonchus (Acroceridae) are known to visit some PCI members. Therefore, I assessed the relative importance of Eulonchus and other insect visitors to the pollination of a rare PCI species native to the Siskiyou Mountains, I. bracteata.

Methods. I quantified pollinator importance for all flower visitors at sites in northern California and southern Oregon as the product of average visit rate and …

Floral Resource Dynamics For Pollinators In A Central Iowa Tallgrass Prairie Restoration, Lily Conrad, Ben Hoksch, Mark C. Myers

Undergraduate Student Work

Recently, native and managed colonies of pollinators, including bees, butterflies, and other insects, have experienced a largescale declines. In an effort to restore habitat for pollinators, the United States Department of Agriculture’s Farm Service Agency (FSA) created the CP-42 Pollinator Habitat conservation practice under the Conservation Reserve Program. This program pays private landowners to restore habitat for pollinator species with ecological and economic importance. To qualify for the program, CP-42 seed mixes must include:

• A minimum of 9 pollinator-friendly flowering plants,

• A minimum of three species in bloom during each of three seasonal periods (April-June 15, June 15-July, …

New Species, New Combinations And New Synonymies Towards A Treatment Of Acanthaceae For The Manual De Plantas De Costa Rica, Lucinda A. Mcdade, Barry E. Hammel, Carrie A. Kiel

Aliso: A Journal of Systematic and Floristic Botany

In preparation for the publication of the Manual de Plantas de Costa Rica, new species, names, combinations, and synonymies are provided in six genera of Acanthaceae: Anisacanthus, Chamaeranthemum, Dicliptera, Justicia, Ruellia and Stenostephanus. The new species are A. grace-woodiae, J. altior, J. lithophila and S. chavesii. A new name at the species level, R. leonardiana, is provided for R. tubiflora var. hirsuta. With Habracanthus, Hansteinia, Kalbreyeriella and Razisea being subsumed within Stenostephanus, the new combinations S. blepharorhachis, S. citrinus, S. leiorhachis (= Razisea spicata …

Index To Volume 36

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Terrestrial Coarse Woody Debris, Erin C. Rowekamp, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Lonicera Maackii Berry Leachate Toxicity: Physicochemical Data, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

In-stream (in situ) and in-lab microcosm trials using Hyalella azteca, Anthopotamus verticis, and Allocapnia spp.

Application Of Machine Learning Methodologies For Predicting Corn Economic Optimal Nitrogen Rate, Zhisheng Qin, D. Brenton Myers, Curtis J. Ransom, Newell R. Kitchen, Sang-Zi Liang, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabian G. Fernandez, David W. Franzen, Carrie A. M. Laboski, Brad D. Malone, Emerson D. Nafziger, John E. Sawyer, John F. Shanahan

Department of Agronomy and Horticulture: Faculty Publications

Determination of in-season N requirement for corn (Zea mays L.) is challenging due to interactions of genotype, environment, and management. Machine learning (ML), with its predictive power to tackle complex systems, may solve this barrier in the development of locally based N recommendations. The objective of this study was to explore application of ML methodologies to predict economic optimum nitrogen rate (EONR) for corn using data from 47 experiments across the US Corn Belt. Two features, a water table adjusted available water capacity (AWC_wt) and a ratio of in-season rainfall to AWC_wt (RAWC_wt), were …

Floral Resource Availability And Butterfly Community Characteristics In Cp-42 Pollinator Habitat Plantings, Ethan Marburger, Corinne Myers, Mark Myers

Undergraduate Student Work

Prairies once covered approximately 85% of Iowa, but due to extensive habitat loss less than 0.1% of native prairies remain (Smith 1998). Habitat loss in Iowa has been driven by agricultural expansion and intensification, and has resulted in the decline of many native insect pollinators. To curb habitat loss and restore habitat for pollinators, USDA’s Farm Service Agency (FSA) provides private landowners incentives to enroll agricultural land into the Conservation Reserve Program (CRP) Pollinator Habitat (CP-42) practice. The CP-42 conservation practice requires landowners to seed at least 9 species of pollinator friendly wildflowers, legumes, or shrubs on enrolled lands. CP-42 …

Sown Forb Performance In Cp42 Fields, Nathan Theel, Mark Sherrard

Undergraduate Student Work

CP42 is a general conservation practice that attempts to establish pollinator-friendly habitat

In total, >500,000 acres have been converted to CP42 (>40% of which is in Iowa) [1]

To date, there has been no formal assessment of practice success (i.e., post-seeding forb establishment)

In this study, we assess forb establishment in randomly selected CP42 fields near Cedar Falls, Iowa

We identify forbs with high/low establishment and relate this to seed cost in an effort to improve seed mix design

Soil Characteristics Affecting Weed Invasion On Conservation Reserve Program Pollinator Habitats, Jennifer Pauley

Undergraduate Student Work

The Conservation Reserve Program (CRP) is a land conservation program administered by the US Department of Agriculture Farm Service Agency (FSA) to improve water quality, prevent soil erosion, and create wildlife habitat.

• The CP-42 program provides cost share and an annual rental payment to farmers in order to establish native prairie species for pollinator habitat.

County NRCS technical staff make recommendations for seed mix to match the dominant soil moisture class in a parcel (e.g. dry, mesic, wet) with the appropriate plant species.

• There has been little to no research prior to the Biology SURP initiative to monitor …

Correlation Between Wild Bee Populations And Vegetative Resources In The Conservation Reserve Program’S Pollinator Enhancement Plantings, Olivia Willoughby, Alyssa Burgert, Nathan Theel, Ai Wen

Undergraduate Student Work

Wild bee populations are in decline; and one of the main factors that caused this is habitat loss, which diminishes floral resources that bees utilize for nectar and pollen (Watanabe 2013)

The Conservation Reserve Program (CRP) aims to combat habitat loss by implementing ecological restorations that provide resources for a variety of different wildlife

In 2011, the CRP established a Pollinator Habitat Initiative called CP-42, which encompasses forbs and grasses to create adequate habitat for pollinators

A primary goal of this program is to enhance pollinator abundance and diversity

A Comparison Of Logistic Regression And Maximum Entropy For Distribution Modeling Of Range Plant Species (A Case Study In Rangelands Of Western Taftan, Southeastern Iran), Hossein Piri Sahragard, Majid Ajorlo

Turkish Journal of Botany

This study aimed to compare the efficiency of logistic regression and maximum entropy models for distribution modelling of plant species habitats in the rangelands of western Taftan, southeastern Iran. Vegetation cover was sampled using a systematic-randomized method. Soils were sampled at 0?30 and 30?60 cm depths through digging of eight soil profiles. The agreement between predictive maps generated by models with documented maps of habitats indicated that logistic regression was able to predict the distribution of Artemisia aucheri and Artemisia sieberi habitats at excellent (kappa value = 0.95) and weak (kappa value = 0.39) levels, respectively. On the other hand, …

Roselliniella Lecideae Sp. Nov. And Other Interesting Lichenicolous Fungi From The Northern Black Sea Region (Ukraine), Valeriy Darmostuk, Alexander Khodosovtsev, Ganna Naumovich, Nadiia Kharechko

Turkish Journal of Botany

The lichenicolous fungus Roselliniella lecideae sp. nov. on Lecidea fuscoatra is described from Ukraine. It is characterized by globose ostiolate perithecia, 2-3 septate hyaline periphyses, unitunicate 8-spored asci, and unicellular ellipsoid brown ascospores. This species, close to Roselliniella microthelia, has shorter periphyses, smaller asci, and ascospores, and its hosts. Brackelia lunkei, Henfellra muriformis, Lichenoconium aeruginosum, Lichenohendersonia squamarinae, Lichenostigma dimelaenae, Sphaerellothecium atryneae, Stigmidium epistigmellum, S. stygnospilum, Pronectria xanthoriae, Refractohilum achromaticum, and Zwackhiomyces lithoiceae are reported for the first time from Ukraine. Two species are new for the plains of Ukraine, three are new to the steppe zone of Ukraine, and one …

Diversity And Functional Traits Of Spontaneous Plant Species In Algerian Rangelands Rehabilitated With Prickly Pear (Opuntia Ficus-Indica L.) Plantations, Souad Neffar, Taha Menasria, Haroun Chenchouni

Turkish Journal of Botany

The prickly pear (Opuntia ficus-indica L. Miller) is a xerophytic cactus species widely cultivated in arid and semiarid regions worldwide and used in rehabilitation programs of rangelands in Algeria since 1990. This study analyzed the diversity and functional traits of plant species established in prickly pear plantations growing under arid and semiarid climates. A 3-year plant assessment (2008-2010) was carried out using ecological descriptors (abundance, species richness, diversity indices, disturbance index, and Jaccard index) and plant functional traits (life forms, chorological types, dispersal types, Grime's, Noy-Meir's strategies, and morphological types). The results revealed 36 and 31 species in arid and …

Determination Of Soil Nutrient Status In Vuralia Turcica Populations Growing At Different Locations In The Central Anatolia Region Of Turkey, Di̇lek Tekdal, Burçi̇n Çingay, Mehmet Seli̇m Çeti̇ner

Turkish Journal of Botany

This study is an overview of the importance of soil nutrients for the maintenance of Vuralia turcica, which is an endemic in Turkey due to its natural habitats. Electrical conductivity, pH, and mineral element content (macroelements: nitrogen, phosphorus, potassium, calcium, magnesium, and sodium, and microelements: boron, cadmium, copper, iron, manganese, nickel, lead, and zinc) were analyzed in 21 soil samples taken at 30?60 m depth at 21 points from 8 different locations where V. turcica was growing to determine nutrient content, which is important for soil fertility and controls the crop yield. According to pH analysis, all samples were strongly …

Embryological Studies On Trichloris (Poaceae, Chloridoideae), Geraldina Alicia Richard, María Carolina Cerino, Beatriz G. Galati, Eliana De Luján Exner, José Francisco Pensiero

Turkish Journal of Botany

The present study provides information on the development of the female and male gametophytes and seed ontogeny characteristics for Trichloris, and it discusses their taxonomic significance to the family Poaceae. Trichloris species are characterized by having 2?3 stamens per floret, tetrasporangiate anthers, a monocotyledonous development of the anther wall, a single middle layer of common origin with the tapetum, fibrous thickening in the cell walls of the endothecium, and a secretory tapetum. These characteristics are constant within Poaceae. The possession of bitegmic and tenuinucellate ovules, laterally positioned antipodals prior to their degeneration, a free exocarp, and an epiblast in the …

New Taraxacum Species (Asteraceae) For Poland, Bohumil Travnicek, Pawel Marciniuk, Jolanta Marciniuk, Vojtech Zila, Krzysztof Oklejewicz, Mateusz Marian Wolanin, Jaroslav Zamecnik

Turkish Journal of Botany

Eleven Taraxacum species were given from Poland for the first time: T. praecox from the section Borea , T. fusciflorum from the section Hamata , and T. clarum , T. praestabile , T. xanthostigma , T. floccosum , T. lundense , T. ottonis , T. subborgvallii , T. pittochromatum , and T. subleucopodum from the section Taraxacum . A photograph of the herbarium specimen from Poland and distributions in Poland and Europe were given for each species.

Evaluation Of Photosynthesis Process Under Drought-Stress Condition Of Chromosome Segment Substitution Line Populations With ‘Khao Dawk Mali 105’ Rice Genetic Background For Drought-Responsive Gene Identification And Characterization, Kansinee Hungsaprug

Chulalongkorn University Theses and Dissertations (Chula ETD)

This research aims to evaluate the photosynthesis-related parameters in chromosome segment substitution lines (CSSL), containing drought tolerant region from DH212 in a ‘KDML105’ genetic background. Screening at seedling stage indicated that CSSL4 was more tolerant to drought stress than ‘KDML105’ with the higher maximum quantum yield of Photosystem II (Fv/Fm). At vegetative stage, CSSL4 tended to have the higher level of light-saturated net photosynthetic rate (PNmax), stomatal conductance (gs), electron transport rate (ETR) and effective quantum yield of photosystem II photochemistry (FPSII), when compared to the ‘KDML105’ after 9 days of water withholding. Moreover, the flag leaves of CSSL4 and …

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Plant Probiotic Bacteria Bacillus And Paraburkholderia Improve Growth, Yield And Content Of Antioxidants In Strawberry Fruit, Mosaddiqur Rahman, Abdullah As Sabir, Julakha Akter Mukrta, Mohibul Alam Khan, Mohammed Mohi-Ud-Din, Giashuddin Miah, Mahfuzur Rahman, M. Tofazzal Islam

Faculty & Staff Scholarship

Strawberry is an excellent source of natural antioxidants with high capacity of scavenging free radicals.

This study evaluated the effects of two plant probiotic bacteria, Bacillus amylolequefaciens BChi1 and Paraburkholderia fungorum BRRh-4 on growth, fruit yield and antioxidant contents in strawberry fruits. Root dipping of seedlings (plug plants) followed by spray applications of both probiotic bacteria in the field on foliage significantly increased fruit yield (up to 48%) over non-treated control. Enhanced fruit yield likely to be linked with higher root and shoot growth, individual and total fruit weight/plant and production of phytohormone by the probiotic bacteria applied on plants. …

Water Toxicity Effects Test: Survival And Growth (Dry Mass), Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Sediment Toxicity Effects Test, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Wetted Width, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Within-Stream Variability Data, Kevin W. Custer, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Water Toxicity Effects Test: Physicochemical Data, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Sediment % Solids And Total Organic Carbon, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

No abstract provided.

Site Characteristics, Kevin W. Custer, Eric B. Borth, Julia I. Chapman, Ryan W. Mcewan

Data Files

Stream order, HHEI, Watershed size, Forest Cover, Maximum pool depth

Lonicera Maackii Leaf Leachate Toxicity: Survival, Eric B. Borth, Kevin W. Custer, Julia I. Chapman, Ryan W. Mcewan

Data Files

Lymnaea stagnalis and Hyalella azteca