796 research outputs found
Dendrocellus Schmidt-Goebel 1846
No full textDendrocellus Schmidt-Goebel, 1846 Type species: Dendrocellus discolor Schmidt-Goebel, 1846 (= Desera nepalensis Hope, 1831)= Desera Hope, 1831 (nec Dejean, 1825) Type species: Desera nepalensis Hope, 1831 Bousquet (2002) and Liang et al. (2004) have correctly reconstructed the complex nomenclatorial history of this genus, reaching the conclusion that its valid generic name is Dendrocellus Schmidt-Goebel, 1846, instead of Desera Dejean, 1825, as it was frequently considered previously. We only observe that back in 1949 Jeannel already wrote: “Les Dendrocellus Schm. -Goeb. (type: discolor Schm. -Goeb.,= nepalensis Hope) sont généralement classés à tort sous le nom de Desera. … Malgré leurs ongles tarsaux pectinés, ils sont très voisins des Drypta s. str. ” (Jeannel, 1949). So, it seems the french author had already reached the same conclusions. This genus, recently revised by Liang & Kavanaugh (2007), contains 22 species occuring in Africa, Asia and Australia. Systematically it is extremely close to Drypta, differing only in its tarsal claws pectinate instead of smooth. The genitalic characters of both sexes are the same, the external resemblance among members of the two genera is sometimes puzzling and a few species of Dendrocellus show very slight tarsal pectination, sometimes leaving a doubt on their generic pertinence; only a comparative study of all the characters of the species belonging to the two genera will allow to decide whether they can be really maintained as separate genera. Already in 1968 Darlington observed: “ Desera differs from Drypta only in having pectinate tarsal claws. A modern revision of the species is needed to show whether both genera are really monophyletic and distinct” (Darlington, 1968, p. 218). The unique combination of characters distinguishing this genus from the others of the tribe is: pronotal bead absent or very rudimental (fig. 10); punctuation on head and pronotum dense, regular, the punctures usually well distinct from each other; pronotum very feebly constricted towards base; elytral microsculpture well developed; elytral pubescence dense, usually arranged in two-three more or less regular rows; scutellar pore constantly single; intervals flat or slightly convex; tarsal claws slender, more or less pectinate on inner side; two to five evident setae on outer side of stylomere (fig. 8).Published as part of Sciaky, Riccardo & Anichtchenko, Alexander, 2020, Taxonomic notes on the tribe Dryptini Bonelli, 1810 with description of a new genus and species from China (Coleoptera: Carabidae: Dryptini), pp. 522-530 in Zootaxa 4731 (4) on page 524, DOI: 10.11646/zootaxa.4731.4.5, http://zenodo.org/record/366198
William Goebel: The Politics of Wrath
No full textThe turbulent career of William Goebel (1856–1900), which culminated in assassination, marked an end-of-the-century struggle for political control of Kentucky. Although populism had become a strong force in the nation, the Louisville and Nashville Railroad and ex-Confederates still dominated the state and its Democratic party. Touting reforms and attaching the railroad monopoly, Goebel challenged this old order.
A Yankee in a state that fancied itself southern, Goebel had to depend on a strong organization to win votes. As “The Kenton King” he created a new style of politics. To some he was a progressive reformer; to others, a tyrannical machine boss. His drive for power and his enemies’ fierce opposition aroused violent political factionalism. Goebel’s fateful duel with a rival, his partisan election law, and his ruthless convention tactics led to the bitterly contested gubernatorial election of 1899 that resulted in his murder. Although the full truth about the murder was never revealed in nearly a decade of trials and the advent of progressive politics was long delayed in Kentucky, Goebel’s death did relieve the state’s political turmoil and induce some legal reforms. Using new sources and fresh perspectives, James C. Klotter portrays Goebel’s tumultuous era and discovers the real man within the obscurity of his conflicting images.
James C. Klotter is professor of history at Georgetown College and the state historian of Kentucky. He is the author or coauthor of several books, including A New History of Kentucky.
A lively account of one of the most bizarre and controversial episodes in Kentucky history. -- Tennessee Historical Quarterlyhttps://uknowledge.uky.edu/upk_political_history/1000/thumbnail.jp
sj-pdf-1-vmj-10.1177_1358863X221086619 – Supplemental material for Surveillance for jugular venous thrombosis in astronauts
No full textSupplemental material, sj-pdf-1-vmj-10.1177_1358863X221086619 for Surveillance for jugular venous thrombosis in astronauts by James Pavela, Ashot Sargsyan, Deepak Bedi, Aaron Everson, Jacqueline Charvat, Sara Mason, Benjamin Johansen, Karina Marshall-Goebel, Sarah Mercaldo, Ronak Shah and Stephan Moll in Vascular Medicine</p
Hydraulic redistribution under moderate drought among English oak, European beech and Norway spruce determined by deuterium isotope labeling in a split-root experiment
No full textHydraulic redistribution (HR) of soil water through plant roots is a crucial phenomenon improving the water balance of plants and ecosystems. It is mostly described under severe drought, and not yet studied under moderate drought. We tested the potential of HR under moderate drought, hypothesizing that (H1) tree species redistribute soil water in their roots even under moderate drought and that (H2) neighboring plants are supported with water provided by redistributing plants. Trees were planted in split-root systems with one individual (i. e., split-root plant, SRP) having its roots divided between two pots with one additional tree each. Species were 2-to 4-year-old English oak (Quercus robur L.), European beech (Fagus sylvatica L.) and Norway spruce (Picea abies (L.) Karst). A gradient in soil water potential (psi(soil)) was established between the two pots (-0.55 +/- 0.02MPa and -0.29 +/- 0.03MPa), and HR was observed by labeling with deuterium-enriched water. Irrespective of species identity, 93% of the SRPs redistributed deuterium enriched water from the moist to the drier side, supporting H1. Eighty-eight percent of the plants in the drier pots were deuterium enriched in their roots, with 61 +/-6% of the root water originating from SRP roots. Differences in HR among species were related to their root anatomy with diffuse-porous xylem structure in both beech and-opposing the stem structure-oak roots. In spruce, we found exclusively tracheids. We conclude that water can be redistributed within roots of different tree species along a moderate.soil gradient, accentuating HR as an important water source for drought-stressed plants, with potential implications for ecohydrological and plant physiological sciences. It remains to be shown to what extent HR occurs under field conditions in Central Europe
Walter Benjamin relampeja em Guimarães Rosa
No full textO objetivo deste artigo é destacar afinidades entre Walter Benjamin e Guimarães Rosa além de avaliar como os conceitos e pensamentos de Benjamin passaram a ser incorporados à fortuna crítica sobre Grande sertão: veredas ao longo das últimas décadas. Para tal, foram analisados textos dos principais pensadores que se dedicaram à obra de Rosa, com atenção especial àqueles que se debruçaram concomitantemente à obra de Benjamin no Brasil. Conclui-se que o pensamento benjaminiano passa a relampejar de forma cada vez mais intensa a partir da década de 90, com destaque especial para os conceitos de narrador, romance e epopeia e para os ensaios com uma abordagem mais histórica, política e social do romance.</jats:p
Player agency in interactive narrative: audience, actor & author
No full textThe question motivating this review paper is, how can
computer-based interactive narrative be used as a constructivist learn-
ing activity? The paper proposes that player agency can be used to
link interactive narrative to learner agency in constructivist theory,
and to classify approaches to interactive narrative. The traditional
question driving research in interactive narrative is, ‘how can an in-
teractive narrative deal with a high degree of player agency, while
maintaining a coherent and well-formed narrative?’ This question
derives from an Aristotelian approach to interactive narrative that,
as the question shows, is inherently antagonistic to player agency.
Within this approach, player agency must be restricted and manip-
ulated to maintain the narrative. Two alternative approaches based
on Brecht’s Epic Theatre and Boal’s Theatre of the Oppressed are
reviewed. If a Boalian approach to interactive narrative is taken the
conflict between narrative and player agency dissolves. The question
that emerges from this approach is quite different from the traditional
question above, and presents a more useful approach to applying in-
teractive narrative as a constructivist learning activity
White grub infestation in sugarcane in northern Tanzania and soil analysis from 2022 to 2024
No full textThe damage caused by the white grub Cochliotis melolonthoides Gerst. (Scarabaeidae: Melolonthinae) has severely reduced sugarcane yields in Northern Tanzania since the establishment of large scale plantations in 1940s. At the TPC sugarcane complex, despite the spread of infestations over the decades, the damage has remained localized in their southern area. This dataset aims to identify the environmental parameters that determine such spatial limitations, focusing on soil health and cultural practices, to propose effective pest management strategies. It comprises 1,856 records from 928 locations (two replications per location) of white grub counts and soil analyses conducted between 2022 and 2024
Ecological factors Driving Aspen (Populus tremuloides Michx.) Stand Stability in a Semi-Arid Montane Region of the Intermountain West
No full textIn the western United States Populus tremuloides Michx., hereafter referred to as aspen, is considered an important forest cover type because of its contribution to local and regional biodiversity, as well as its use for habitat and food for a variety of large and small mammals, songbirds, and game birds. These critical ecosystem services provided by aspen have made many ecologists and resource managers concerned with recent trends of aspen decline across the western U.S. Many ecologists have for decades predicted a trajectory of disappearance while more recently others have suggested that aspen persistence is contingent on local disturbance regimes, management, and or geographical location. The greatest threats to aspen persistence in the West have been identified by researchers as competition with succeeding conifers, browsing by ungulates, and acute drought. In this dissertation, I investigate the relationship between aspen persistence and regeneration ecology with these identified threats focusing primarily on drought and soil moisture but accounting for successional conifer density and browsing pressure. My efforts focus on aspen stands in the Caribou-Targhee National Forest (CNF). In chapter 2, I explore the importance of precipitation as a proxy for potential soil moisture limitation on aspen growth across the CNF using dendrochronological methods. Specifically, I applied a new dendrochronological technique, Blue Intensity (BI), for the extraction of a climate signal in aspen latewood to explore the importance of mid-summer precipitation on aspen growth. Blue intensity is an effective and inexpensive proxy for wood density that has been found to correlate more accurately with climate factors (precipitation, temperature) than ring width, especially in latewood. The results of this analysis showed a positive correlation between mid-summer precipitation and latewood density that supports the first part of my hypothesis; aspen growing on sites with expected soil moisture limitations will produce a climate signal that correlates with precipitation; and the second part of my hypothesis that this signal reveals latewood development is driven by and dependent on soil moisture availability based on precipitation. From these results I conclude that late season growth for aspen on exposed high elevation sites is dependent on precipitation and growth is thus limited by soil moisture availability. In Chapter 3, I investigate the relationship between soil moisture availability and aspen stand persistence by comparing the structure, composition, and regeneration densities of nine aspen stands with nine paired upland aspen stands. Considering the numerous studies published in the last two decades that show evidence of drought being the main inciting factor of aspen decline on xeric sites, I hypothesized that the proximity to perennial streams will lead to higher soil moisture availability and thus increase the probability of aspen persistence on the Caribou-Targhee National Forest landscape. My results for this study partially supported my hypothesis that riparian areas support aspen stands that show evidence of a higher probability of persistence relative to upland aspen stands. The most compelling evidence comes from the significantly higher aspen regeneration densities at the seedling layer (1m height) aspen regeneration densities were still considerably higher in the riparian areas than in the upland areas but this difference was not significant. In this study I used the term “seedling layer” and “sapling layer” to refer to aspen regeneration in different height classes and did not differentiate between regeneration originating from seed versus regeneration originating from suckering. Building off of the results in chapter 3 of significant differences in the density of aspen in the regeneration layer between riparian and upland aspen stands, in chapter 5 I developed a model path analysis using structural equation modeling to explore the relative impacts and interactions of physiographic and ecological factors that affect aspen regeneration densities. Before any analysis of the direct factors influencing soil moisture availability on aspen regeneration, it was important to characterize the clonal diversity of each site. To do this, in chapter 4 I used a traditional approach, with modern techniques, based upon leaf morphology to determine the clonal diversity on each site to be used in a structural equation model (SEM). Overall, I found that there were differences in mean clonal diversity between riparian and upland aspen stands, with riparian stands tending to have higher clonal diversity. The results of the SEM analysis (chapter 5) support my hypothesis that factors affecting soil moisture availability have the strongest effect on regeneration. Specifically, the exogenous factor with the strongest direct effect on aspen regeneration was incident radiation (heatload), and the endogenous factor with the strongest direct effect on regeneration was the percent cover of competitive plant species. Overall, the results of each chapter support my global hypothesis that factors reducing soil moisture availability and increasing site susceptibility to drought have a negative effect on aspen growth and regeneration. My results, however, also emphasize that context is important in determining the collective effect of these factors. Thus, proper assessment of aspen vulnerability in the West requires analyses at multiple scales that can incorporate the relative weights and interactions of elements influencing aspen persistence.doctoral, Ph.D., Natural Resources -- University of Idaho - College of Graduate Studies, 2022-0
"Then It's Clear Who Owns the Trees": Evaluating Privatization in the Social Forest in a Zimbabwean Resettlement Area
No full textThe value that associates private property regimes with better management of arable land played a consistent role in colonial policy and practice in "African" areas of Southern/Rhodesia (Zimbabwe). In the woodlands, however, common property management systems characterized African areas. This persisted in the post-Independence state, both in the Communal Areas, and in the newly demarcated Resettlement Areas. Recommendations by the recent Land Tenure Commission (1993), however, are set to change tenure in the woodlands in Resettlement Areas from common property to private property, on the perception that the common property system fails to sustainably manage the woodlands. In this paper, the apparent failure in common property woodland management in a case study of a Model A resettlement scheme in Zimbabwe is explored. Tenure insecurity and the types of controls and institutions in the woodlands are examined as possible sources of the failure. The major stress on the woodlands, besides clearance of land for agriculture, emerges as resource poaching by Communal Area neighbours. The currently popular notion of resource-sharing as a possible solution to this problem is discussed. In the final analysis the author finds that privatization is unlikely to solve the management crisis as it inadequately deals with the major problem of resource poaching. This failure is part of a wider conceptual problem of dealing with Zimbabwe's different land-use categories in isolation, rather than as an interrelated system. The paper is framed by an analysis of how a new focus on tenure issues, particularly privatization, in the land redistribution process in Zimbabwe fits with a growing trend wherein issues of justice and development for the rural poor are eclipsed by a discourse of "efficiency" and "productivity".Institutional and Behavioral Economics, Resource /Energy Economics and Policy,
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