The Significance of Hydrological and Geomorphological Processes for Lowland Tropical Rainforest Ecology

Author(s):  
Ian Douglas
Tellus B ◽  
2008 ◽  
Vol 60 (4) ◽  
Author(s):  
Shinjiro Ohkubo ◽  
Yoshiko Kosugi ◽  
Satoru Takanashi ◽  
Naoko Matsuo ◽  
Makoto Tani ◽  
...  

2019 ◽  
Vol 21 (2) ◽  
pp. 925-935
Author(s):  
Thais Dos Anjos Soares ◽  
Sinara Gomes De Souza ◽  
Simone Cardoso Ribeiro

Para compreensão da dinâmica do espaço natural, a Geografia Física possuiu inúmeras interdisciplinaridades que a acompanham, e a caracterização geoambiental é uma delas, no propósito de reconhecimento dos elementos constituintes da paisagem. O presente trabalho foca na caracterização geoambiental do município de Milagres, município do sul cearense, e teve como metodologia, pesquisa bibliográfica e cartográfica acerca dos elementos geoambientais da área de estudo, assim como a elaboração de material cartográfico utilizando os programas ArcGis e Qgis. Partindo desse material foi realizado uma breve descrição deste município, focando fundamentalmente nas características ambientais. É essencial o estudo da área em que irá realizar pesquisas, buscando o aprofundamento dos saberes de seus aspectos geoambientais para se obter uma prévia do conhecimento do local que irá ser trabalhado.Palavras-chave: Caracterização Geoambiental; Cariri cearense; Milagres/CE. ABSTRACTFor the dynamics of the natural space, a physical geography had numerous interdisciplinarities that accompany it, and a geoenvironmental characterization is one of them, without the purpose of recognition of the constituent elements of the landscape. The process of analysis of the processes of risk analysis and analysis of the morphosculpture processes and their use in the soil and in the health and sciences / EC systems, which studies the thematic knowledge of geomorphological processes considering the knowledge about nature and values of culture and local landscape, however, the geoenvironmental characterization work of the municipality of Milagres / CE. The work had as a methodological objective, bibliographical research and the translation of the geoenvironmental elements of the study area. For this work, cartographic material was elaborated using the programs ArcGis and Qgis. Starting from this material was a detailed description of its area of study, as well as one of its environmental characteristics. What is essential for the selection of geoenvironmental data to obtain a preview of the knowledge about the work place that will be realized.Keywords: Geoenvironmental Characterization; Cariri cearense; Milagres/CE. RESUMENPara comprender la dinámica del espacio natural, la Geografía Física tiene numerosas interdisciplinarías que la acompañan, y la caracterización geoambiental es una de ellas, para reconocer los elementos constitutivos del paisaje. El presente trabajo se centra en la caracterización geoambiental del municipio de Milagres, municipio de sul cearense, y tuvo como metodología, investigación bibliográfica y cartográfica sobre los elementos geoambientales del área de estudio, así como la elaboración de material cartográfico utilizando los programas ArcGis y Qgis. A partir de este material se realizó una breve descripción de este municipio, centrándose principalmente en las características ambientales. Es esencial estudiar el área en la que realizar investigaciones, buscando profundizar el conocimiento de sus aspectos geoambientales para obtener un conocimiento previo del lugar donde se trabajará.Palabras clave: caracterización geoambiental; Cariri Ceará; Milagros / CE.


2018 ◽  
Vol 932 (2) ◽  
pp. 22-35
Author(s):  
S.B. Kuzmin ◽  
D.A. Lopatkin

Mapping of hazardous geomorphological processes in the Baikal Region and its ecological and geomorphological zoning was carried out on the basis of the improved method, developed earlier by the authors. Baikal Region includes the subjects of the Russian Federation in the South Siberia and Republic of Mongolia within the boundaries of the Lake Baikal Basin. The basis of zoning are


2021 ◽  
Vol 304-305 ◽  
pp. 108391
Author(s):  
Wenjun Zhou ◽  
Jing Zhu ◽  
Hongli Ji ◽  
John Grace ◽  
Liqing Sha ◽  
...  

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Olumide Samuel Fadahunsi ◽  
Peter Ifeoluwa Adegbola ◽  
Olubukola Sinbad Olorunnisola ◽  
Temitayo Idris Subair ◽  
David Oluwasegun Adepoju ◽  
...  

Abstract Background Hunteria umbellate (K. Schum.) Hallier f. (Apocynaceae) is a tropical rainforest tree commonly found in sub-Saharan region of Africa. It is a useful and very popular plant among the locals due to the outstanding anti-diabetic activity of the seeds. Methods A comprehensive literature search on articles published on phytochemical analysis and various pharmacological activities of Hunteria umbellate was carried out using search engines such as Google Scholar, PubMed and Science Direct. Results In this review, it was deduced that H. umbellate is employed in folk medicine as an elixir for obesity, fever, leprosy sores, menstrual pain, infertility, yaws, intestinal worms, abdominal discomfort and stomach ache. Due to their durability and immunity against termites, the stems are coveted and desired as timbers in the construction of houses, while the bark has been reportedly exported to Europe for medicinal uses. Pharmacological activities such as fertility enhancing, aphrodisiac, hypoglycemic, anti-inflammatory, has been ascribed to the different morphological organs of H. umbellate. Moreover, compounds belonging to important classes of secondary metabolites with biological activities such as triterpenoids, flavonoids, tannins, alkaloids, quinic acids have been identified and characterized from the plant. Conclusion From this review, it can be inferred that, numerous and bioactive principles with known biological usefulness are present in the extracts of H. umbellate and might be responsible for the observed biological and pharmacological activities.


2021 ◽  
Author(s):  
Christian Birkel ◽  
Alicia Correa Barahona ◽  
Clément Duvert ◽  
Sebastián Granados Bolaños ◽  
Andres Chavarría Palma ◽  
...  

Geosciences ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 174
Author(s):  
Marco Emanuele Discenza ◽  
Carlo Esposito ◽  
Goro Komatsu ◽  
Enrico Miccadei

The availability of high-quality surface data acquired by recent Mars missions and the development of increasingly accurate methods for analysis have made it possible to identify, describe, and analyze many geological and geomorphological processes previously unknown or unstudied on Mars. Among these, the slow and large-scale slope deformational phenomena, generally known as Deep-Seated Gravitational Slope Deformations (DSGSDs), are of particular interest. Since the early 2000s, several studies were conducted in order to identify and analyze Martian large-scale gravitational processes. Similar to what happens on Earth, these phenomena apparently occur in diverse morpho-structural conditions on Mars. Nevertheless, the difficulty of directly studying geological, structural, and geomorphological characteristics of the planet makes the analysis of these phenomena particularly complex, leaving numerous questions to be answered. This paper reports a synthesis of all the known studies conducted on large-scale deformational processes on Mars to date, in order to provide a complete and exhaustive picture of the phenomena. After the synthesis of the literature studies, the specific characteristics of the phenomena are analyzed, and the remaining main open issued are described.


Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 119
Author(s):  
Antonio Fidel Santos-Hernández ◽  
Alejandro Ismael Monterroso-Rivas ◽  
Diódoro Granados-Sánchez ◽  
Antonio Villanueva-Morales ◽  
Malinali Santacruz-Carrillo

The tropical rainforest is one of the lushest and most important plant communities in Mexico’s tropical regions, yet its potential distribution has not been studied in current and future climate conditions. The aim of this paper was to propose priority areas for conservation based on ecological niche and species distribution modeling of 22 species with the greatest ecological importance at the climax stage. Geographic records were correlated with bioclimatic temperature and precipitation variables using Maxent and Kuenm software for each species. The best Maxent models were chosen based on statistical significance, complexity and predictive power, and current potential distributions were obtained from these models. Future potential distributions were projected with two climate change scenarios: HADGEM2_ES and GFDL_CM3 models and RCP 8.5 W/m2 by 2075–2099. All potential distributions for each scenario were then assembled for further analysis. We found that 14 tropical rainforest species have the potential for distribution in 97.4% of the landscape currently occupied by climax vegetation (0.6% of the country). Both climate change scenarios showed a 3.5% reduction in their potential distribution and possible displacement to higher elevation regions. Areas are proposed for tropical rainforest conservation where suitable bioclimatic conditions are expected to prevail.


Sign in / Sign up

Export Citation Format

Share Document