Browsing by Author "Kandasamy, Gajendiran"

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INFLUENCES OF WILDFIRE ON THE FOREST ECOSYSTEM AND CLIMATE CHANGE: A COMPREHENSIVE STUDY
(Elsevier Inc, 2024-01) Kandasamy, Gajendiran; Sabariswaran, Kandasamy; Mathiyazhagan, Narayanan
Wildfires have complex impacts on forests, including changes in vegetation, threats to biodiversity, and emissions of greenhouse gases like carbon dioxide, which exacerbate climate change. The influence of wildfires on animal habitats is particularly noteworthy, as they can lead to significant changes in native environments. The extent of these alterations in species and habitats plays a crucial role in shaping forest ecology. Drought, disease, insect infestations, overgrazing, or their combined effects can amplify the negative effects on specific plant genera and entire ecosystems. In addition to the immediate consequences of plant mortality and altered community dynamics, forest fires have far-reaching implications. They often increase flowering and seed production, further influencing ecological communities. However, one concerning trend is the decline in the diversity of forest biological species within fire-affected areas. Beyond their ecological impacts, wildfires emit substantial quantities of greenhouse gases and fine particulates into the atmosphere, triggering profound changes in climate patterns and contributing to global warming. As vegetation burns during these fires, the carbon stored within is released, rendering large forest fires detrimental to biodiversity and the emission of CO2, a significant contributor to global warming. Measuring the global impact of wildfires on ecological communities and greenhouse gas emissions has become increasingly vital. These research endeavors shed light on the intricate relationships and feedback loops linking wildfires, ecosystem inhabitants, and the evolving climate landscape.
INFLUENCES OF WILDFIRE ON THE FOREST ECOSYSTEM AND CLIMATE CHANGE: A COMPREHENSIVE STUDY (Review)
(Elsevier, 2024-01-01) Kandasamy, Gajendiran; Sabariswaran, Kandasamy; Mathiyazhagan, Narayanan
Wildfires have complex impacts on forests, including changes in vegetation, threats to biodiversity, and emissions of greenhouse gases like carbon dioxide, which exacerbate climate change. The influence of wildfires on animal habitats is particularly noteworthy, as they can lead to significant changes in native environments. The extent of these alterations in species and habitats plays a crucial role in shaping forest ecology. Drought, disease, insect infestations, overgrazing, or their combined effects can amplify the negative effects on specific plant genera and entire ecosystems. In addition to the immediate consequences of plant mortality and altered community dynamics, forest fires have far-reaching implications. They often increase flowering and seed production, further influencing ecological communities. However, one concerning trend is the decline in the diversity of forest biological species within fire-affected areas. Beyond their ecological impacts, wildfires emit substantial quantities of greenhouse gases and fine particulates into the atmosphere, triggering profound changes in climate patterns and contributing to global warming. As vegetation burns during these fires, the carbon stored within is released, rendering large forest fires detrimental to biodiversity and the emission of CO2, a significant contributor to global warming. Measuring the global impact of wildfires on ecological communities and greenhouse gas emissions has become increasingly vital. These research endeavors shed light on the intricate relationships and feedback loops linking wildfires, ecosystem inhabitants, and the evolving climate landscape.
TANNERY WASTEWATER REMEDIATION COMPETENCE OF METAL TOLERANT BACTERIA AND FUNGI UNDER THE INFLUENCE OF CHEMICALLY MODIFIED WATER HYACINTH BIOCHAR: AN IN VITRO EVALUATION
(Springer Link, 2023-11-22) Kandasamy, Gajendiran; Ying, Ma; Sabariswaran, Kandasamy; Amal Abdullah, A. Sabour; Maha, Alshiekheid; Arivalagan, Pugazhendhi; Mathiyazhagan, Narayanan
This study was trying to find a sustainable approach to remediate the tannery wastewater by various treatments sets (set-I to set-VIII: consists of KOH modified biochar, Bacillus cereus, and Aspergillus flavus biomass), and treatment successfulness was determined by phytotoxicity and cytotoxicity studies on potential Vigna unguiculata seedlings and Artemia franciscana larvae, respectively. Three tannery wastewater samples were collected from 3 sites (I, II, and III); among them, the physicochemical properties of site I were beyond the permissible limits containing more volume of harmful heavy metals such as Cr, Cd, Pb, As, Co, Cu, Fe, Zn, and Mn than other sample. The test B. cereus and A. flavus showed remarkable metal tolerance to heavy metals such as Cr, Cd, Pb, As, Co, Cu, Fe, Zn, and Mn at 800 µg mL−1. The bioremediation study results stated that the KOH modified pre-synthesized and characterized water hyacinth biochar with the blend of B. cereus and A. flavus (treatment set-VII) biomass substantially reduced/removed (Cr, Cd, Pd, As, Co, Cu, Fe, Zn, and Mn as 54.75%, 49.52%, 30.49%, 17.53%, 29.07%, 14.75%, 5%, 27.27%, and 9.2%, respectively) the heavy metals from the tannery wastewater. The treatment effectiveness was determined by phytotoxicity and cytotoxicity studies on V. unguiculata seedlings and A. franciscana larvae, respectively. Among various treatment sets, the set-VII demonstrated absence of phytotoxicity and cytotoxicity on V. unguiculata seedlings and A. franciscana larvae, respectively. This clearly shows that the KOH modified biochar with B. cereus and A. flavus biomass can be used to manage and treat tannery wastewater in a sustainable manner.
TANNERY WASTEWATER REMEDIATION COMPETENCE OF METAL TOLERANT BACTERIA AND FUNGI UNDER THE INFLUENCE OF CHEMICALLY MODIFIED WATER HYACINTH BIOCHAR: AN IN VITRO EVALUATION
(Springer Link, 2023-11-22) Kandasamy, Gajendiran; Ying, Ma; Sabariswaran, Kandasamy; Amal Abdullah A, Sabour; Maha, Alshiekheid; Arivalagan, Pugazhendhi; Mathiyazhagan, Narayanan
This study was trying to find a sustainable approach to remediate the tannery wastewater by various treatments sets (set-I to set-VIII: consists of KOH modified biochar, Bacillus cereus, and Aspergillus flavus biomass), and treatment successfulness was determined by phytotoxicity and cytotoxicity studies on potential Vigna unguiculata seedlings and Artemia franciscana larvae, respectively. Three tannery wastewater samples were collected from 3 sites (I, II, and III); among them, the physicochemical properties of site I were beyond the permissible limits containing more volume of harmful heavy metals such as Cr, Cd, Pb, As, Co, Cu, Fe, Zn, and Mn than other sample. The test B. cereus and A. flavus showed remarkable metal tolerance to heavy metals such as Cr, Cd, Pb, As, Co, Cu, Fe, Zn, and Mn at 800 µg mL−1. The bioremediation study results stated that the KOH modified pre-synthesized and characterized water hyacinth biochar with the blend of B. cereus and A. flavus (treatment set-VII) biomass substantially reduced/removed (Cr, Cd, Pd, As, Co, Cu, Fe, Zn, and Mn as 54.75%, 49.52%, 30.49%, 17.53%, 29.07%, 14.75%, 5%, 27.27%, and 9.2%, respectively) the heavy metals from the tannery wastewater. The treatment effectiveness was determined by phytotoxicity and cytotoxicity studies on V. unguiculata seedlings and A. franciscana larvae, respectively. Among various treatment sets, the set-VII demonstrated absence of phytotoxicity and cytotoxicity on V. unguiculata seedlings and A. franciscana larvae, respectively. This clearly shows that the KOH modified biochar with B. cereus and A. flavus biomass can be used to manage and treat tannery wastewater in a sustainable manner.