A BRIEF HISTORY OF RIPARIAN FORESTS IN THE CENTRAL VALLEY OF CALIFORNIA

1984 ◽  
pp. 23-29
Author(s):  
Edwin F. Katibah
Keyword(s):  
Central Valley ◽  
Riparian Forests ◽  
History Of

scholarly journals IV.—The Volcanic History of Ireland

1874 ◽  
Vol 1 (5) ◽  
pp. 205-210
Author(s):  
Edward Hull
Keyword(s):  
Volcanic Rocks ◽  
Central Valley ◽  
Short Description ◽  
Lower Carboniferous ◽  
Volcanic History ◽  
The North ◽  
History Of ◽  
Similar Materials ◽  
Considerable Intensity

Carboniferous Period.—The Lower Carboniferous rocks, both of the North of England, of Scotland, and of Ireland, afford examples of contemporaneous volcanic action of considerable intensity. The so-called “toad-stones” of Derbyshire, and the great sheets of melaphyre, porphyrite, and ashes of the central valley of Scotland, forming the Kilpatrick, Campsie, and Dairy Hills, appear to have been erupted over the bed of the same sea as that in which were poured out similar materials in County Limerick, forming the well-known Carboniferous volcanic rocks of “the Limerick Basin.” These rocks have been already so fully described by several observers, that I shall confine myself to a very short description, such as is essential to the brief history of volcanic action which I am here endeavouring to draw up.

scholarly journals Análise comparativa da fragilidade ambiental da bacia do rio Piracicaba a partir da aplicação de dois modelos metodológicos: suporte para o estabelecimento e proposição de Corredores Ecológicos.

2020 ◽  
Vol 13 (6) ◽  
pp. 3060
Author(s):  
Suelen Crispim Sutil ◽  
José Augusto Costa Gonçalves ◽  
Eliane Maria Vieira
Keyword(s):  
Environmental Management ◽  
Comparative Analysis ◽  
River Basin ◽  
Forest Fragmentation ◽  
Riparian Forests ◽  
Forest Patches ◽  
Biological Corridors ◽  
Gradual Development ◽  
History Of ◽  
Piracicaba River

A avaliação da fragilidade ambiental das bacias hidrográficas vem se tornando cada vez mais importante no cenário ambiental, devido ao desenvolvimento gradativo da sociedade e a expansão tecnológica e econômica ao longo dos anos. Uma estratégia adotada para amenizar a degradação e restabelecer o equilíbrio, é a formação de corredores ecológicos (CEs), que auxilia na ligação entre remanescentes naturais. A bacia do rio Piracicaba passa por um longo histórico de degradação e de fragmentação florestal, principalmente próximo às cidades devido ao desmatamento de matas ciliares. Em vista disso, este trabalho analisou e comparou a aplicação de dois diferentes modelos de fragilidade ambiental, aplicada a esta bacia e, a partir de seus produtos identificou a melhor metodologia base para a proposição de corredores ecológicos na região. Com os resultados obtidos, foi possível inferir que, além de grande parte da bacia apresentar grau de fragilidade entre fraco e médio, as áreas mais vulneráveis são aquelas mais próximas à cabeceira da bacia. O estabelecimento dos corredores ecológicos abrangeu, prioritariamente, as áreas de maior fragilidade entre a conexão dos fragmentos de vegetação e as Áreas de Preservação Permanentes (APPs), assim, verificou-se que é necessário o reflorestamento de cerca de 342,24 km² das APPs da bacia para que seja possível a conexão entre as remanescentes e 2,0 km²  de áreas de ligação. Comparative analysis of the environmental fragility of the Piracicaba river basin using two methodological models: support for the application and proposition of Biological Corridors A B S T R A C TThe assessment of a river basin’s environmental fragility has become even more important on the environmental scenery due to society’s gradual development and technological and economic expansion over the years. An adopted strategy to ease the degradation and restore the ecological balance is the establishment of biological corridors that can assist the connection between natural forest patches. The Piracicaba river basin has been going through a long history of degradation and forest fragmentation, especially near the cities because of the deforestation of riparian forests. Therefore, this paper analyzed and compared the application of two adapted environmental fragility models in this river basin and identified from their products the best base methodology for the proposition of ecological corridors. From the results, it was possible to infer that, in addition to a big part of the basin present poor and average fragility level, the most vulnerable areas are the ones close to the source of the main rivers. The biological corridors establishment covered, primarily, the most vulnerable areas between the fragments of remaining forests and the Permanent Preservation Areas (PPAs) and, from this, it was possible to verify that the reforestation of around 132,14 mi² of PPAs is necessary for the connection of patches of remaining forests and 0,77 mi² of connections areas.Keywords: environmental vulnerability, geoprocessing, environmental management.

A history of tillage in California’s Central Valley

2016 ◽  
Vol 157 ◽  
pp. 52-64 ◽  
Author(s):  
J.P. Mitchell ◽  
L.M. Carter ◽  
D.C. Reicosky ◽  
A. Shrestha ◽  
G.S. Pettygrove ◽  
...  
Keyword(s):  
Central Valley ◽  
History Of ◽  
California's Central Valley ◽  
California’S Central Valley

Hmong American Literature and Culture

2018 ◽  
Author(s):  
Aline Lo ◽  
Kong Pheng Pha
Keyword(s):  
United States ◽  
American Literature ◽  
Asian American ◽  
Cultural Practices ◽  
Personal Narratives ◽  
Central Valley ◽  
The United States ◽  
American Novel ◽  
History Of ◽  
Hmong American

Hmong American literature is an emerging field within Asian American literature, seeing a steep rise in production starting in the early 2000s. In collective and individual publication efforts, the literature includes mostly memoirs, short stories, and poetry. Essays, personal narratives, transcribed oral folktales, and plays have also been published in anthologies, including two that are edited by Hmong American writers. Although there has been an upsurge in publication and a wide representation in terms of genres, there is still no widely published Hmong American novel. Coming from an orality-based culture and a long history of marginalization both in Asia and the United States, many Hmong American narratives contend with issues related to silence and secrecy. In the context of 20th-century French imperialism and US neocolonialism, much of the literature also touches on the subjects of displacement, refugee resettlement, trauma, and cultural shifts. Of the latter, there is a definite preoccupation with religion and changes in gender roles and sexuality, particularly as many of the writers have been born or largely raised in the United States and are therefore interested in representing Hmong American identities and experiences. Hmong American literature can also be characterized by a sense of regionalism; many of the narratives and publications take place in heavily Hmong-populated areas like the Central Valley of California and Upper Midwest states like Minnesota and Wisconsin. While the move toward textuality comes with its own problems, it also presents Hmong Americans with a new method of self-representation. Historically studied by outsiders and exoticized for belonging to a culture that has resisted assimilation and maintained a unique language, religion, and cultural practices, Hmong writers are producing their own narratives, and altogether, the literature is rich with complex characters, speakers, and stories that represent and explore Hmong American experiences.

Health disparity in Central Valley of California: Higher incidence of breast cancer in Asian population.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e19029-e19029
Author(s):  
Soujanya Sodavarapu ◽  
Kate Hatter ◽  
Megha Goyal ◽  
Prakash Ramdass ◽  
Majed Sayedi ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Socioeconomic Status ◽  
African American ◽  
Ductal Carcinoma ◽  
Central Valley ◽  
Asian Population ◽  
Foreign Born ◽  
Recurrence Rates ◽  
History Of ◽  
The Impact

e19029 Background: California has the most immigrants of any state in the U.S., with approximately a quarter of the residents being foreign-born. The impact of migration on breast cancer incidences over time has not yet been characterized in the Northern Central Valley. This provides a unique opportunity to study the influence of migration, socioeconomic gradient, and racial identity on the incidence of breast cancer in San Joaquin County. Methods: This study was a retrospective, single-institution study that compared the socio-demographic variables and clinical characteristics of the patients who had a history of breast cancer in a teaching central valley hospital. We reviewed all charts with a breast cancer diagnosis from 2014-2019. We compared age, demographics, socioeconomic status comorbidities, pathology, treatment, and outcomes. Appropriate statistics have been used to analyze the data. Results: A retrospective chart review of all patients with a diagnosis of breast cancer from 2014-2019 at a central valley teaching hospital. 33.5% were white, 17.2% African American, 26.6% Hispanic, and 22.6% were Asian. Migrated Asian women are having three times increased incidence in central California compared to their peers in Asian. Additionally, those of lower socioeconomic status were more often affected (61.9% vs. 30.4% of middle-class status) in our population. Demographics and comorbidities were studied. Smoking was seen in 23.2% of patients, alcohol in 16.3%, hypertension in 43.6%, Diabetes in 18.9%, lung disease in 11.7%, and Kidney disease in 6.9%. 23.8% of the patients had a family history of cancer. Screening was only done in 41% of patients, and the distribution of race was as follows: white 10.6%, African American 7.7%, Hispanic 8.9%, Asian 8.9%. It was found that infiltrating ductal carcinoma was seen in 54.8% of patients, of which 16.1% were white, 10% African American, 15.5% Hispanic, and 13.2% were Asian. Triple-negative breast cancer was seen in 14.9% in our patient population. We further reviewed treatment methods, including chemotherapy, radiation, and surgery, as well as recurrence rates. Conclusions: We suggest that screening has to be more concentrated in all communities. The fact that the Asian population in the Central Valley shows higher rates of breast cancer could be due to epigenetic, western lifestyle, and environmental factors. Higher awareness and willingness as a subgroup may be contributing as well or there may be an actual increase; this requires further investigation, and we will present further subgroup analysis at presentation.

scholarly journals Flukicide efficacy against Fasciola hepatica of Triclabendazole and Nitroxynil in cattle of the central valley of Chile

2019 ◽  
Vol 28 (1) ◽  
pp. 164-167 ◽  
Author(s):  
Javiera Romero ◽  
Carmen Villaguala ◽  
Fernando Quiroz ◽  
Carlos Landaeta-Aqueveque ◽  
Guillermo Alfaro ◽  
...  
Keyword(s):  
Fasciola Hepatica ◽  
Central Valley ◽  
Oral Route ◽  
Control Group ◽  
Group 4 ◽  
Faecal Egg Count ◽  
History Of ◽  
Group 3 ◽  
Group 2 ◽  
First Time

Abstract On a farm with permanent history of fasciolasis a study was performed aimed to know the efficacy of triclabendazole (TCBZ) and then to contrast with that of nitroxynil. Thirty-nine cattle naturally infected with Fasciola hepatica were randomly allocated into 4 experimental groups: Group 1 (control) was left untreated. Group 2 was treated with of 12 mg/kg body weight (bw) of TCBZ by oral route. Group 3 treated with 24 mg/kg bw TCBZ orally. Group 4 was treated with 10 mg/kg bw of nitroxynil subcutaneously. The anthelmintic efficacy was calculated as the percentage of reduction in faecal egg count (FEC) at 14 and 28 d post-treatment. Results indicated that there were no significant differences in the percentage of FEC reduction between control group and the groups treated with 12 or 24 mg/kg of TCBZ. On the contrary, the treatment with nitroxinyl significantly reduced the FEC and decreased the percentage of positive animals. In conclusion, Fasciola hepatica is reported for first time as resistant to TCBZ in Chile, which highlights the need of rotating drugs and assessing the efficacy of the administered drug in order to avoid the selection of resistant worms.

II.—The Readvance, Marginal Kame-moraine of the South of Scotland, and some Later Stages of Retreat

1927 ◽  
Vol 55 (1) ◽  
pp. 25-50 ◽  
Author(s):  
J. Kaye Charlesworth
Keyword(s):  
Central Valley ◽  
The South ◽  
History Of

In the course of researches into the glaciation of the western part of the Southern Uplands of Scotland the writer accidentally stumbled upon a series of large and continuous moraines bordering the Central Valley. Some of these had been observed and described by earlier workers, others—probably constituting the larger part—had either escaped detection or had been differently interpreted.The solution of the problem presented by these moraines not only required their careful mapping from coast to coast, but also inevitably led to an attempt to decipher the history of the retreat of the ice out of the Central Valley.

Properties and history of the central eastern Arctic sea floor

Polar Record ◽  
1990 ◽  
Vol 26 (156) ◽  
pp. 1-6 ◽  
Author(s):  
J. Thiede ◽  
A. Altenbach ◽  
U. Bleil ◽  
R. Botz ◽  
P. Mudie ◽  
...  
Keyword(s):  
Sea Ice ◽  
Barents Sea ◽  
Sediment Cores ◽  
Central Valley ◽  
Arctic Basin ◽  
Hydrothermal Activity ◽  
Northern Margin ◽  
Ocean Ridges ◽  
Basement Rocks ◽  
History Of

ABSTRACTThe deep eastern Arctic basin between the Lomonosov Ridge and the Eurasian continental margin differs from other ocean basins in the very slow spreading of its floor and unusual depositional environment under perennial sea-ice cover. The recent expedition ARK IV/3 of RV Polar stern for the first time made geoscientific investigations from the northern margin of the Barents Sea north to the Nansen-Gakkel Ridge. Much deeper than most other mid-ocean ridges, this ridge is poorly-surveyed, but has a central valley which in places is deeper than 5.5 km, 1–1.5 km below the basin floors on either side. Heat flow in the central part of the valley is very rapid; both basement rocks and overlying sediments showed unexpectedly the influence of intense and long-term hydrothermal activity. The sediments on the northern and southern flanks of the ridge are slightly calcareous pelagic mud layers alternating with carbonate-free horizons, where up to 40% of the sedimentary section is soft mud clasts. Similar mud aggregates were observed on the surface of the multi-year sea ice, appearing to represent a special type of sediment transport by sea ice in the Transpolar Drift. In contrast to the western Arctic, Fram Strait and the Norwegian-Greenland Sea, gravel is rarely found in sediment cores. Recovered cores indicate that icebergs and sea ice carrying coarse sediment seldom rafted detritus to the study area during the last approximately 300,000 years.

scholarly journals Holocen history of vegetation at “Uroczysko Mokradła” (SW Poland) – paleobotanical research

2016 ◽  
Vol 69 (3) ◽  
Author(s):  
Klara Tomaszewska ◽  
Małgorzata Malkiewicz ◽  
Magda Podlaska
Keyword(s):  
Middle Ages ◽  
Riparian Forests ◽  
Coniferous Forests ◽  
Peat Bogs ◽  
Peat Bog ◽  
Forming Process ◽  
Atlantic Period ◽  
History Of Vegetation ◽  
History Of ◽  
Pollen Records

Two peat bogs were studied in the Bory Dolnośląskie, the forest complex in Lower Silesia (Poland). An Instorf drill was used to collect two peat profiles from the deepest places. The macroremains analysis showed that after the initiation of peat-forming processes phytocoenoses responsible for the deposition of transition sphagnum peat were developed at both locations. Later on, the development of both peat bogs differed. The smaller peat bog continued to develop, whereas the big bog was shifted to ombrotrophic water regime. Therefore, phytocoenoses accumulated 1.3 m of <em>Sphagnum</em> peat. The peat-forming process was initiated at different times in both sites. For the smaller peat bog, it took place during the Atlantic period, while in the case of the larger peat bog – several thousand years later. The first identified forest phytocoenoses in the Atlantic period are mesophilic multi-species deciduous forests. Dry coniferous forests and mixed birch-pine forests grew in dry habitats. Riparian forests occupied lower grounds. In the Subboreal period, the oak–hazel communities initially developed and mixed coniferous forests were partially replaced by light oak forests. The encroachment of spruce, fir, hornbeam, and beech resulted in the development of dry ground forests, including beech–fir woods. The importance of riparian forests increased, whereas in dry grounds pine and mixed coniferous forests continued to occur. In the Subatlantic period, the transformations in forest communities were associated with the spread of hornbeam, beech, and fir and thereby vast fertile habitats were colonized by dry ground communities and beech woods. Pine and mixed forests as well as riparian forests were of lesser importance. Pollen records from the last 500 years showed the clear presence of humans. It was evident from the presence of cereal and weed pollen and from the disturbances in the pollen records caused by peat extraction in the Middle Ages.

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