Anthropogenic Impacts on Biochemical Processes in a Tropical  Estuarine Lagoon

Estuaries play an invaluable role in the transformation and cycling of materials as they move between land and sea; including anthropogenic materials. Increasingly, human land use is delivering material loads that risk overwhelming the normal functions that these ecosystems provide. In this context, the objective of this study is to assess key biogeochemical processes to understand the connections of anthropogenic activities on ecosystem performance in a tropical estuarine lagoon system. This research focuses on a case study area, Dong Ho lagoon in Vietnam, which exemplifies the anthropogenic impacts and management issues facing most of the Mekong coastline and other similar areas in Vietnam. Located at the south-western edge of the Mekong delta, the Dong Ho estuary is subject to material inputs from both local and more remote sources; making it vulnerable to degradation and functional loss. This paper summarises the key findings from an assessment of the Dong Ho estuarine functions and highlights potential risks it is currently facing.

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Anthropic interference in mangrove areas of the Mundaú-Manguaba estuarine lagoon complex (CELMM), Alagoas (Brazil) as a case study

Ciência Rural ◽

10.1590/0103-8478cr20200356 ◽

2020 ◽

Vol 50 (10) ◽

Author(s):

Amanda Silva de Medeiros ◽

João Gomes da Costa ◽

Kallianna Dantas Araújo ◽

Acácia Rodrigues Calheiros ◽

Selenobaldo Alexinaldo Cabral de Sant’Anna ◽

...

Keyword(s):

Anthropogenic Activities ◽

Biological Indicators ◽

Google Earth ◽

Aerial Images ◽

Quality Analysis ◽

Land Occupation ◽

Estuarine Lagoon ◽

Biological Attributes

ABSTRACT: The mangrove is a coastal ecosystem that is present in different parts of the world. It provides various ecosystem services from food supply to the influence of climate change. Due to the development of society, this ecosystem has been subjected to significant impacts from anthropogenic activities. Therefore, the objective of this research was to evaluate the environmental impacts caused in mangrove areas that have undergone modifications as a result of anthropic activities (agricultural cultivation, deforestation, civil construction) compared with those of conserved mangrove areas. This research took place through the analysis of the temporal sequence of aerial images (Google Earth) and soil quality analysis through field collections to evaluate the chemical and biological indicators in the different land use systems. As these are permanent changes that affect the type of soil and its coverage, significant differences were obtained between the chemical and biological characteristics of the four environments, with different usage systems. The mangrove has been negatively impacted by inadequate management and land occupation. Continuity of anthropic intervention in the mangrove will promote the disappearance of this ecosystem in the long term. Among the chemical and biological attributes used for the analyses that were performed, aluminum and edaphic organisms were the ones that allowed the greatest contribution of distinction from the degree of disturbance in areas of agricultural cultivation, deforestation and civil construction/mangrove transition.

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Distribution and bioconcentration of heavy metals in a tropical aquatic food web: A case study of a tropical estuarine lagoon in SE Mexico

Environmental Pollution ◽

10.1016/j.envpol.2015.12.014 ◽

2016 ◽

Vol 210 ◽

pp. 155-165 ◽

Cited By ~ 58

Author(s):

Manuel Mendoza-Carranza ◽

Alejandra Sepúlveda-Lozada ◽

Celia Dias-Ferreira ◽

Violette Geissen

Keyword(s):

Heavy Metals ◽

Food Web ◽

Aquatic Food Web ◽

Tropical Estuarine ◽

Estuarine Lagoon ◽

Aquatic Food

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Natural and Anthropogenic Impacts on Forest Structure: A Case Study of Uttarakhand State

The Open Ecology Journal ◽

10.2174/1874213001811010038 ◽

2018 ◽

Vol 11 (1) ◽

pp. 38-46 ◽

Cited By ~ 3

Author(s):

Jaspal S. Chauhan ◽

Alok S. Gautam ◽

R.S. Negi

Keyword(s):

Anthropogenic Impacts ◽

Anthropogenic Activities ◽

Geographic Area ◽

Anthropogenic Factors ◽

Fuel Wood ◽

Goods And Services ◽

State Economy ◽

The Status ◽

Community People

Forests are among the most important natural resources in Uttarakhand as they occupy 71% of the geographic area and contribute a good share in state economy. They are rich repositories of biodiversity and are providers of ecosystem goods and services to both regional and global community. People are dependent on forests for fuel wood, grass and other biomass. But unfortunately recent trend of data shows a huge degradation of forestland due to natural and anthropogenic activities. Variations in climatic condition and natural disasters are triggering rate of degradation of forests in Uttarakhand. The present paper reviews the status of forest in Uttarakhand and discusses the major natural and anthropogenic factors responsible for its degradation.

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ASSESSMENT OF THE POTENTIAL RISKS OF AIRBONE MICROBIAL CONTAMINATION IN SOLID RECOVERED FUEL PLANTS: A CASE STUDY IN ISTANBUL

Environmental Engineering and Management Journal ◽

10.30638/eemj.2017.154 ◽

2017 ◽

Vol 16 (7) ◽

pp. 1415-1421

Author(s):

Yasemin Tabak ◽

Senol Yildiz ◽

Volkan Enc ◽

Mustafa Kara ◽

Emine Acet

Keyword(s):

Microbial Contamination ◽

Potential Risks

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An Ayurvedic Visual Rehabilitation In Lebers Congenital Amaurosis - Prospective Case Study

Journal of Ayurveda and Integrated Medical Sciences (JAIMS) ◽

10.21760/jaims.v3i4.13321 ◽

2018 ◽

Vol 3 (4) ◽

Author(s):

Dr. Vidhyasri M ◽

Dr. S. M. Pasha

Keyword(s):

Marked Improvement ◽

Clinical Case ◽

Treatment Plan ◽

Visual Disability ◽

Visual Rehabilitation ◽

Potential Risks ◽

The Subject ◽

Slow Frequency

Introduction: This is the case report of child who was diagnosed with LCA reported with complaints of large-amplitude, slow-frequency, roving nystagmus, frequent tendency to press on his eyes, enopthalmos, with completely normal ophthalmoscopic examination with normal appearing optic nerve and retina and has a non recordable ERG; considering this condition under the lines of Vataja Nanatmaja Vyadhi treatment was structured to render effective visual rehabilitation which showed marked results. Methods: 4 years old male child who was diagnosed with lebers congenital amaurosis was brought by his parents to Eye OPD, GAMC, Bengaluru. The presentation of this case includes bibliographic review of the subject, presentation of a clinical case and description of the importance of Ayurvedic prespective of handling of these patients. Results: The child showed improvement in fixing for light and also nystagmus showed marked improvement and there were considerable behavioural changes observed. Discussion: It is important to deepen the environment of the disease to know the possible implications in Ayurvedic management, recognize the magnitude of visual disability that our patient presents for the establishment of the treatment plan and provide an integral care of excellence in an interdisciplinary way in favor of visual rehabilitation of our patients and also help to restore quality of life with no potential risks of side effects.

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Climate change and livelihood resilience capacities in the Mekong Delta: a case study on the transition to rice–shrimp farming in Vietnam’s Kien Giang Province

Climatic Change ◽

10.1007/s10584-021-02973-w ◽

2021 ◽

Vol 164 (1-2) ◽

Author(s):

Thijs Poelma ◽

Mucahid Mustafa Bayrak ◽

Duong Van Nha ◽

Thong Anh Tran

Keyword(s):

Climate Change ◽

Mekong Delta ◽

Shrimp Farming ◽

Livelihood Resilience

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A Dieldrin Case Study: Another Evidence of an Obsolete Substance in the European Soil Environment

Agriculture ◽

10.3390/agriculture11040314 ◽

2021 ◽

Vol 11 (4) ◽

pp. 314

Author(s):

Petros Tsiantas ◽

Evangelia N. Tzanetou ◽

Helen Karasali ◽

Konstantinos M. Kasiotis

Keyword(s):

Active Substance ◽

Anthropogenic Activities ◽

Carcinogenic Risk ◽

The European Union ◽

Soil Environment ◽

Single Application ◽

Environmental Concentration ◽

Tandem Mass Spectrometric ◽

Potential Use

Soil constitutes a central environmental compartment that, due to natural and anthropogenic activities, is a recipient of several contaminants. Among them, organochlorine pesticides are of major concern, even though they have been banned decades ago in the European Union, due to their persistence and the health effects they can elicit. In the presented work, a gas chromatographic tandem mass spectrometric (GC-MS/MS) developed method was applied to soil samples after the suspected and potential use of formulations containing organochlorine active substance. One soil sample was positive to dieldrin at 0.018 mg kg−1. Predicted environmental concentration in soil (PECsoil) considering a single application of this active substance potentially attributed the finding in its past use. The subsequent health risk assessment showed negligible non-carcinogenic risk and tolerable carcinogenic risk. The latter signifies that repetitive and prolonged sampling can unveil the pragmatic projection of persistent chemicals’ residues in the soil.

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Fuzzy or Non-Fuzzy? A Comparison between Fuzzy Logic-Based Vulnerability Mapping and DRASTIC Approach Using a Numerical Model. A Case Study from Qatar

Water ◽

10.3390/w13091288 ◽

2021 ◽

Vol 13 (9) ◽

pp. 1288

Author(s):

Husam Musa Baalousha ◽

Bassam Tawabini ◽

Thomas D. Seers

Keyword(s):

Fuzzy Logic ◽

Numerical Model ◽

Vulnerability Assessment ◽

Anthropogenic Impacts ◽

Groundwater Vulnerability ◽

Vulnerability Mapping ◽

Anthropogenic Contamination ◽

Weighted Overlay ◽

Vulnerability Maps

Vulnerability maps are useful for groundwater protection, water resources development, and land use management. The literature contains various approaches for intrinsic vulnerability assessment, and they mainly depend on hydrogeological settings and anthropogenic impacts. Most methods assign certain ratings and weights to each contributing factor to groundwater vulnerability. Fuzzy logic (FL) is an alternative artificial intelligence tool for overlay analysis, where spatial properties are fuzzified. Unlike the specific rating used in the weighted overlay-based vulnerability mapping methods, FL allows more flexibility through assigning a degree of contribution without specific boundaries for various classes. This study compares the results of DRASTIC vulnerability approach with the FL approach, applying both on Qatar aquifers. The comparison was checked and validated against a numerical model developed for the same study area, and the actual anthropogenic contamination load. Results show some similarities and differences between both approaches. While the coastal areas fall in the same category of high vulnerability in both cases, the FL approach shows greater variability than the DRASTIC approach and better matches with model results and contamination load. FL is probably better suited for vulnerability assessment than the weighted overlay methods.

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