Ecological processes in the hydropower plant reservoir under multiple anthropogenic pressures

2021 ◽  
Author(s):  
Tatjana Simčič ◽  
Polona Pengal ◽  
Tina Eleršek ◽  
Blaž Cokan ◽  
Nataša Mori
Keyword(s):  
Hydropower Plant ◽  
Anthropogenic Pressures ◽  
Ecological Processes

scholarly journals Ecological processes underlying the emergence of novel enzootic cycles—arboviruses in the neotropics as a case study

2020 ◽  
Author(s):  
Sarah Guth ◽  
Kathryn Hanley ◽  
Benjamin M. Althouse ◽  
Mike Boots
Keyword(s):  
Human Population ◽  
Emerging Infectious Diseases ◽  
Invasion Biology ◽  
Control Measures ◽  
Natural Ecosystem ◽  
International Mobility ◽  
Anthropogenic Pressures ◽  
Ecological Processes ◽  
Public Health Burden ◽  
Significant Public Health

AbstractPathogens originating from wildlife (zoonoses) pose a significant public health burden, comprising the majority of emerging infectious diseases. Efforts to control and prevent zoonotic disease have traditionally focused on animal-to-human transmission, or “spillover”. However, in the modern era, increasing international mobility and commerce facilitate the spread of infected humans, non-human animals (hereafter animals), and their products worldwide, thereby increasing the risk that zoonoses will be introduced to new geographic areas. Imported zoonoses can potentially ‘spill back’ to infect local wildlife—a danger magnified by urbanization and other anthropogenic pressures that increase contacts between human and wildlife populations. In this way, humans can function as vectors, dispersing zoonoses from their ancestral enzootic systems to establish reservoirs elsewhere in novel animal host populations. Once established, these enzootic cycles are largely unassailable by standard control measures and have the potential to feed human epidemics. Understanding when and why translocated zoonoses establish novel enzootic cycles requires disentangling ecologically complex and stochastic interactions between the zoonosis, the human population, and the natural ecosystem. We address this challenge by delineating potential ecological mechanisms affecting each stage of enzootic establishment—wildlife exposure, enzootic infection, and persistence—applying existing ecological concepts from epidemiology, invasion biology, and population ecology. We ground our study in the neotropics, where four arthropod-borne viruses (arboviruses) of zoonotic origin—yellow fever, dengue, chikungunya, and Zika viruses—have separately been introduced into the human population. This paper is a step towards developing a framework for predicting and preventing novel enzootic cycles in the face of zoonotic translocations.

scholarly journals A newly discovered wildlife migration in Namibia and Botswana is the longest in Africa

Oryx ◽  
2014 ◽  
Vol 50 (1) ◽  
pp. 138-146 ◽  
Author(s):  
R. Naidoo ◽  
M. J. Chase ◽  
P. Beytell ◽  
P. Du Preez ◽  
K. Landen ◽  
...  
Keyword(s):  
Large Scale ◽  
Dry Season ◽  
Wet Season ◽  
Anthropogenic Pressures ◽  
Ecological Processes ◽  
Serengeti Ecosystem ◽  
Straight Line ◽  
Land Use Transformation ◽  
Wildlife Migration ◽  
Connochaetes Taurinus

AbstractMigrations of most animal taxa are declining as a result of anthropogenic pressures and land-use transformation. Here, we document and characterize a previously unknown multi-country migration of Burchell's zebra Equus quagga that is the longest of all recorded large mammal migrations in Africa. Our data from eight adult female zebras collared on the border of Namibia and Botswana show that in December 2012 all individuals crossed the Chobe River and moved due south to Nxai Pan National Park in Botswana, where they spent a mean duration of 10 weeks before returning, less directly, to their dry season floodplain habitat. The same southward movements were also observed in December 2013. Nxai Pan appeared to have similar environmental conditions to several possible alternative wet season destinations that were closer to the dry season habitat on the Chobe River, and water availability, but not habitat or vegetation biomass, was associated with higher-use areas along the migratory pathway. These results suggest a genetic and/or cultural basis for the choice of migration destination, rather than an environmental one. Regardless of the cause, the round-trip, straight-line migration distance of 500 km is greater than that covered by wildebeest Connochaetes taurinus during their well-known seasonal journey in the Serengeti ecosystem. It merits conservation attention, given the decline of large-scale ecological processes such as animal migrations.

scholarly journals A Remote Sensing Approach to Understanding Patterns of Secondary Succession in Tropical Forest

2021 ◽  
Vol 13 (11) ◽  
pp. 2148
Author(s):  
Eric Chraibi ◽  
Haley Arnold ◽  
Sandra Luque ◽  
Amy Deacon ◽  
Anne E. Magurran ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Secondary Succession ◽  
Field Data ◽  
Spatial Scales ◽  
Primary Forest ◽  
Anthropogenic Pressures ◽  
Ecological Processes ◽  
Forest Diversity ◽  
Alpha And Beta Diversity ◽  
Landscape Level

Biodiversity monitoring and understanding ecological processes on a global scale is a major challenge for biodiversity conservation. Field assessments commonly used to assess patterns of biodiversity and habitat condition are costly, challenging, and restricted to small spatial scales. As ecosystems face increasing anthropogenic pressures, it is important that we find ways to assess patterns of biodiversity more efficiently. Remote sensing has the potential to support understanding of landscape-level ecological processes. In this study, we considered cacao agroforests at different stages of secondary succession, and primary forest in the Northern Range of Trinidad, West Indies. We assessed changes in tree biodiversity over succession using both field data, and data derived from remote sensing. We then evaluated the strengths and limitations of each method, exploring the potential for expanding field data by using remote sensing techniques to investigate landscape-level patterns of forest condition and regeneration. Remote sensing and field data provided different insights into tree species compositional changes, and patterns of alpha- and beta-diversity. The results highlight the potential of remote sensing for detecting patterns of compositional change in forests, and for expanding on field data in order to better understand landscape-level patterns of forest diversity.

Refurbishment and upgrading of Chancy-Pougny hydropower plant

2016 ◽  
pp. 40-49 ◽  
Author(s):  
Emmanuel Maginot ◽  
Lionel Orcel ◽  
Didier Jimenez
Keyword(s):  
Hydropower Plant

Adoption Decision and Sustainable Utilization of Soil Conservation Technologies: Empirical Evidence from North West Ethiopia

2019 ◽  
Vol 10 ◽  
pp. 1853-1863
Author(s):  
Kassaye Gurebiyaw Legese ◽  
Taye Melese ◽  
Tadie Mire ◽  
Abebe Birara ◽  
Kefale Eniyew
Keyword(s):  
Water Conservation ◽  
Soil Conservation ◽  
Sampling Technique ◽  
Household Survey ◽  
Ecological Processes ◽  
Related Factors ◽  
Severe Problem ◽  
North West ◽  
Household Heads ◽  
North Gondar Zone

Soil is a crucial and precious natural resource that govern numerous ecological processes. However, in Ethiopia particularly in north Gondar zone, soil erosion is a severe problem and a major cause of the decline of agricultural productivity. The adoption and diffusion of soil and water conservation practices (SWC), as a way to tackle this challenge, has become an important issue in the development policy agenda in the zone. Therefore, this study was to identify factors affecting Soil conservation investments in the North Gondar zone. Data was collected through interviewed schedule, filed observation and focus group discussion. The multistage sampling technique was employed to select 206 sample households.  Both descriptive and econometrics model was used to analyze the collected data. A multivariate profit (MPV) model was used to analyze the effect of demographic, socioeconomic, market, institutional and biophysical related factors on the interdependent investment decisions of SWC practices using household survey. The MPV model analysis indicates that farmers invest a combination of practices at parcel level by considering substitution and complementarity effects of the practices. The results also revealed that age of household heads, literacy status of household heads, off-farm activity, distance of farmlands from homesteads, tropical livestock unit, and access to training were influence farmers’ investments in SWC practices. The overall results indicate that the identified physical, socioeconomic, and institutional factors influence promote or hinder investments in SWC practice so, policymakers should take into consideration these various factors in designing and implementing SWC policies and Programmers.

Structural Analysis for a Reduced Scale Model of a Hydropower Plant Debris Containment Grid

2017 ◽  
Author(s):  
Felipe Santos de Castro ◽  
Eduardo Tadashi Katsuno ◽  
Andre Mitsuo Kogishi ◽  
José Marcos Paz de Souza ◽  
Joao Lucas Dozzi Dantas Dantas
Keyword(s):  
Structural Analysis ◽  
Hydropower Plant ◽  
Scale Model ◽  
Plant Debris ◽  
Reduced Scale

PRINCIPLES OF FORMING OBJECTS OF ETHNOGRAPHIC TOURISM WITH REGIONAL FEATURES ON THE EXAMPLE OF THE BELGOROD REGION

2020 ◽  
Vol 1 (3) ◽  
pp. 37-44
Author(s):  
Elena Ladik ◽  
A. Makridina
Keyword(s):  
Cultural Landscape ◽  
Cultural Landscapes ◽  
Cultural Analysis ◽  
Anthropogenic Pressures ◽  
Regional Features ◽  
The Subject ◽  
The Russian Federation ◽  
Multi Level ◽  
Stylistic Unity ◽  
National Experience

The problems of planning the organization of territories and objects of ethnographic tourism, taking into account the landscape features of the regions of the Russian Federation, in particular the Belgorod region, are relevant. The study developed regional principles for planning ethno-tourist spaces on the example of the Belgorod region. The object of research is the territories favorable for the development of ethnographic tourism objects within the Belgorod region, the subject of research is the influence of regional historical and cultural features on the formation of ethnographic tourism territories. As a result of the study, based on the analysis of world and national experience in the design of ethnographic tourism objects, their typological and historical-cultural analysis, the principles of organizing ethnographic tourism objects were developed. These principles take into account such regional features of the cultural landscapes of the Belgorod region, as the principle of preservation of the cultural landscape, the principle of authenticity of the recreated environment, the principle of symbolic exposure, the principle of stylistic unity and the multi-level principle. The use of the developed principles will allow us to preserve the identity and originality of the environment, reduce anthropogenic pressures on valuable landscape areas, increase information content and determine the gradual immersion in the concept of a tourist site.

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