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Author(s):  
Amritanshu Shekhar

Abstract: A forest is a type of ecosystem in which there is high density of trees occupying a relatively large area of land. An ecosystem is an ecological unit consisting of a biotic community together with it’s a biotic environment. In the case of forest, tress dominant the biotic landscape, although there are also other plants and animals. There are many types of forest, such as tropical, evergreen, deciduous and dry forest based on the climatic condition and types of trees present. Forests provide innumerable values to people, provide aspects that address both physical needs as well as the internal nature of people. Forest help cleanse the air by intercepting airborne particles, reducing heat, and absorbing such pollutants as carbon monoxide, sulfur dioxide and nitrogen dioxide. Trees remove this air pollution by lowering air temperature, through respiration, and by retaining particulates. Erosion control has always started with tree and grass planting projects. Tree roots bind the soil and their leaves break the force of wind and rain on soil. Trees fight soil erosion, conserve rainwater and reduce water runoff and sediment deposit after storms. Herbs, shrubs and trees in the forests hold the topmost layer firmly by their roots. This does not allow natural forces like wind and water to carry away the topmost fertile layer of the soil easily. Hence, Forests prevent soil erosion. With forest conservation, animal species, insects and all the biodiversity of natural areas is protected. It is noteworthy that these beings and the local vegetation exert influence on conservation beyond deforestation and the regional climate, even interfering with the health of the local community. Keywords: Forest, Natural Resources, Implementation, Ecological Balance, Significance, Deforestation, Climatic Condition


2021 ◽  
Vol 10 (1) ◽  
Author(s):  
YanQing Zhang

Abstract Background The ecosystem classification of land (ECL) has been studied for a couple of decades, from the beginning of the perfect organism system “top-down” approach to a reversed “bottom-up” approach by defining a micro-ecological unit. After comparing two cases of the ecosystem classification framework implemented in the different continental ecoregions, the processes were carefully examined and justified. Results Theoretically, Bailey’s upper levels of ECL (Description of the ecoregions of the United States, 2nd ed. Rev and expanded (1st ed. 1980). Misc. Publ. No. 1391 (Rev). Washington DC USDA Forest Service; 1995) were applied to the United States and world continents. For the first time, a complete ECL study was accomplished in Western Utah of the United States, with eight upper levels of ECOMAP (National hierarchical framework of ecological units. U.S. Department of Agriculture, Forest Service, Washington, DC. https://www.researchgate.net/publication/237419014_National_hierarchical_framework_of_ecological_units; 1993) plus additional ecological site and vegetation stand. China’s Eco-geographic classification was most likely fitted into Bailey’s Ecosystem Classification upper-level regime. With a binary decision tree analysis, it had been validated that the Domains have an empty entity for 500 Plateau Domain between the US and China ecoregion framework. Implementing lower levels of ECL to Qinghai Province of China, based on the biogeoclimatic condition, vegetation distribution, landform, and plant species feature, it had classified the Section HIIC1 into two Subsections (labeled as i, ii), and delineated iia of QiLian Mountain East Alpine Shrub and Alpine Tundra Ecozone into iia-1 and iia-2 Subzones. Coordinately, an Ecological Site was completed at the bottom level. Conclusions (1) It was more experimental processing by implementing a full ECL in the Western Utah of the United States based on the ECOMAP (1993). (2) The empty entity, named as Plateau Domain 500, should be added into the top-level Bailey’s ecoregion framework. Coordinately, it includes the Divisions of HI and HII and the Provinces of humid, sub-humid, semiarid, and arid for China's Eco-Geographic region. (3) Implementing a full ECL in a different continent and integrating the lower level's models was the process that could handle the execution management, interpreting the relationship of ecosystem, dataset conversion, and error correction.


Cancers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 4947
Author(s):  
Marina Oldenburg ◽  
Nadine Rüchel ◽  
Stefan Janssen ◽  
Arndt Borkhardt ◽  
Katharina L. Gössling

For almost 30 years, the term “holobiont” has referred to an ecological unit where a host (e.g., human) and all species living in or around it are considered together. The concept highlights the complex interactions between the host and the other species, which, if disturbed may lead to disease and premature aging. Specifically, the impact of microbiome alterations on the etiology of acute lymphoblastic leukemia (ALL) in children is not fully understood, but has been the focus of much research in recent years. In ALL patients, significant reductions in microbiome diversity are already observable at disease onset. It remains unclear whether such alterations at diagnosis are etiologically linked with leukemogenesis or simply due to immunological alteration preceding ALL onset. Regardless, all chemotherapeutic treatment regimens severely affect the microbiome, accompanied by severe side effects, including mucositis, systemic inflammation, and infection. In particular, dominance of Enterococcaceae is predictive of infections during chemotherapy. Long-term dysbiosis, like depletion of Faecalibacterium, has been observed in ALL survivors. Modulation of the microbiome (e.g., by fecal microbiota transplant, probiotics, or prebiotics) is currently being researched for potential protective effects. Herein, we review the latest microbiome studies in pediatric ALL patients.


2021 ◽  
Author(s):  
Pooja Goswami ◽  
Jyoti Mathur

Abstract Sustainable managing of environment implies the utilization of green approaches in agronomy for growth and crop protection. Since crop production is determined by extensive application of pesticide to resist plant infection and fertilizers to increase fertility of soil, these processes result in ecological unit deterioration as well economic cost. The current research aims at assessment of the potential of nanofertilizers and fungicidal activity of Silica nanoparticles (SiNPs) which have synthesized from agro-waste (sugarcane bagasse and corn cob).SiNPs Nanoparticles display exceptional biological functions and might behave as novel antifungal agents. SiNPs were characterized via scanning electron microscopy (SEM), Fourier transmission infrared spectroscopy (FTIR), X-ray diffraction (XRD) and energy dispersive X-ray (EDX).The plant reaction to SiNPs treatments were observed in relation to germination, growth characteristics, protein, chlorophyll, antioxidant and antifungal activities. Germination rate was enhanced upto 95.5% with SiNPsconcentration and growth parameters were increased upto1000ugL-1. The physiological changes showed the increment in protein and chlorophyll content upto 14.8mg g-1 and 4.08 mg g-1, respectively. Other than this, maximum mycelia growth inhibition was reported for Fusarium oxysporum and Aspergillus niger as73.42% and 58.92%, respectively. SiNPs positive response on Eruca sativa plant might improve its productivity and act as a potential antifungal agent against pathogenic fungi.


2021 ◽  
Author(s):  
Saranya Kanukollu ◽  
Rainer Remus ◽  
Alexander Martin Ruecker ◽  
Caroline Buchen Tschiskale ◽  
Mathias Hoffmann ◽  
...  

Abstract Background: Managed grasslands are global sources of atmospheric methanol, which is one of the most abundant volatile organic compounds (VOCs) in the atmosphere and promotes oxidative capacity for tropospheric and stratospheric ozone depletion. The phyllosphere is a favoured habitat of plant-colonizing methanol-utilizing bacteria. These bacteria also occur in the rhizosphere, but their relevance for methanol consumption and ecosystem fluxes is unclear. Methanol utilizers of the plant-associated microbiota are key for the mitigation of methanol emission through consumption. However, information about grassland plant microbiota members, their biodiversity and metabolic traits, and thus key actors in the global methanol budget is largely lacking.Results: We investigated the methanol utilization and consumption potentials of two common plant species ( Festuca arundinacea and Taraxacum officinale ) in a temperate grassland. The selected grassland exhibited net methanol emission. The detection of 13 C derived from 13 C-methanol in 16S rRNA of the plant microbiota by stable isotope probing (SIP) revealed distinct methanol utilizer communities in the phyllosphere, roots and rhizosphere but not between plant host species. The phyllosphere was colonized by members of Gamma - and Betaproteobacteria . In the rhizosphere, 13 C-labelled Bacteria were affiliated with Deltaproteobacteria , Gemmatimonadates, and Verrucomicrobiae. Less-abundant 13 C-labelled Bacteria were affiliated with well-known methylotrophs of Alpha -, Gamma -, and Betaproteobacteria . Additional metagenome analyses of both plants were consistent with the SIP results and revealed Bacteria with methanol dehydrogenases (e.g., MxaF1 and XoxF1-5 ) of known but also unusual genera (i.e., Methylomirabilis , Methylooceanibacter , Gemmatimonas , Verminephrobacter ). 14 C-methanol tracing of alive plant material revealed divergent methanol oxidation rates in both plant species but similarly high rates in the rhizosphere and phyllosphere.Conclusions: Our study revealed the rhizosphere as an overlooked hotspot for methanol consumption in temperate grasslands. We also identified unusual methanol utilizers in the phyllosphere and rhizosphere. We did not observe a plant host-specific methanol utilizer community. Our results suggest a model for methanol turnover in which both the sources (plants) and sinks (microbiota) of a volatile are separated but in the same ecological unit.


2021 ◽  
Vol 12 ◽  
Author(s):  
Constanza Schapheer ◽  
Roseli Pellens ◽  
Rosa Scherson

Recent reports indicate that the health of our planet is getting worse and that genuine transformative changes are pressing. So far, efforts to ameliorate Earth’s ecosystem crises have been insufficient, as these often depart from current knowledge of the underlying ecological processes. Nowadays, biodiversity loss and the alterations in biogeochemical cycles are reaching thresholds that put the survival of our species at risk. Biological interactions are fundamental for achieving biological conservation and restoration of ecological processes, especially those that contribute to nutrient cycles. Microorganism are recognized as key players in ecological interactions and nutrient cycling, both free-living and in symbiotic associations with multicellular organisms. This latter assemblage work as a functional ecological unit called “holobiont.” Here, we review the emergent ecosystem properties derived from holobionts, with special emphasis on detritivorous terrestrial arthropods and their symbiotic microorganisms. We revisit their relevance in the cycling of recalcitrant organic compounds (e.g., lignin and cellulose). Finally, based on the interconnection between biodiversity and nutrient cycling, we propose that a multicellular organism and its associates constitute an Ecosystem Holobiont (EH). This EH is the functional unit characterized by carrying out key ecosystem processes. We emphasize that in order to meet the challenge to restore the health of our planet it is critical to reduce anthropic pressures that may threaten not only individual entities (known as “bionts”) but also the stability of the associations that give rise to EH and their ecological functions.


2021 ◽  
Author(s):  
Zhang Yan Qing

Abstract Background: The ecosystem classification of land (ECL) has been studied for a couple of decades, from the beginning of the perfect organism system “top-down” approach to a reversed “bottom-up” approach, defining micro-ecological unit. After reviewing two study cases of the ecosystem classification of land, the ecosystem classification framework implements in different ecoregions were examined and analyzed. Results: Theoretically, Bailey’s upper levels ECL (1995) was applied to the United States, and world continents. China's Eco-geographic classification was most likely fitted into Bailey’s Ecosystem Classification regime. With a binary decision tree analysis, it demonstrated that the top-level, Domain has an empty entity between the US and China ecoregion framework. Based on the biogeoclimate condition, vegetation distribution, landform, and plant species feature, classified HIIC1 into two subsections ( labeled as i, ii ), and delineated iia of QiLian Mountain East Alpine Shrub and Alpine Tundra ecozone into iia-1 and iia-2 zone.Conclusions: 1) The Plateau Domain 500 should be added into the top-level Bailey’s ecoregion framework, coordinately it includes HI and HII Divisions, and humid, dub-humid, semiarid, and arid provinces. 2) Two case comparisons recommend using a practical approach, objectively defined ecosystem classification for the lower-level ECLs in matter of time and project cost.


2021 ◽  
Author(s):  
Saranya Kanukollu ◽  
Rainer Remus ◽  
Alexander Martin Ruecker ◽  
Caroline Buchen Tschiskale ◽  
Mathias Hoffmann ◽  
...  

Abstract Background: Managed grasslands are global sources of atmospheric methanol, which is one of the most abundant volatile organic compounds (VOCs) in the atmosphere and promotes oxidative capacity for tropospheric and stratospheric ozone depletion. The phyllosphere is a favoured habitat of plant-colonizing methanol-utilizing bacteria. These bacteria also occur in the rhizosphere, but their relevance for methanol consumption and ecosystem fluxes is unclear. The estimated global methanol emission rate is considerably higher than those escaped into the atmosphere. Thus, methanol utilizers in the plant microbiota might be key for the mitigation of methanol emission through consumption. However, information about grassland plant microbiota members, their biodiversity and metabolic traits, and thus key actors in the global methanol budget is largely lacking.Results: We investigated the methanol utilization and consumption potentials of two common plant species (Festuca arundinacea and Taraxacum officinale) in a temperate and fertilized grassland. The selected grassland exhibited net methanol emission. The detection of 13C derived from 13C-methanol in 16S rRNA of the plant microbiota by stable isotope probing (SIP) revealed distinct methanol utilizer communities in the phyllosphere, roots and rhizosphere but not between plant host species. The phyllosphere was colonized by members of Gamma- and Betaproteobacteria. In the rhizosphere, 13C-labelled Bacteria were affiliated with Deltaproteobacteria, Gemmatimonadates, and Verrucomicrobiae. Less-abundant 13C-labelled Bacteria were affiliated with well-known methylotrophs of Alpha-, Gamma-, and Betaproteobacteria. Additional metagenome analyses of both plants were consistent with the SIP results and revealed Bacteria with methanol dehydrogenases (e.g., MxaF1 and XoxF1-5) of known but also unusual genera (i.e., Methylomirabilis, Methylooceanibacter, Gemmatimonas, Verminephrobacter). 14C-methanol tracing of alive plant material revealed divergent methanol oxidation rates in both plant species but similarly high rates in the rhizosphere and phyllosphere.Conclusions: The rhizosphere has been shown to be an overlooked hotspot for methanol consumption in grasslands. We also identified unusual methanol utilizers in the phyllosphere and rhizosphere. We did not observe a plant host-specific methanol utilizer community. Our results suggest a model for methanol turnover in which both the sources (plants) and sinks (microbiota) of a volatile are separated but in the same ecological unit.


2021 ◽  
pp. 46-49
Author(s):  
Alejandro Cabezas-Cruz

Abstract This expert opinion focuses on the possible impact of climate change on the tick microbiome, with potential consequences for disease ecology. Within the text, 'microbiome' refers to the microorganisms and their genes, whereas 'microbiota' only refers to the microbes themselves. 'Holobiont' refers to the close association between host and microbes, that together form a discrete ecological unit.


2020 ◽  
Vol 12 (4) ◽  
pp. 111-121
Author(s):  
Josef Slaboch ◽  
Lukáš Čechura

The aim of this study is to derive and apply the hedonic approach for determining and updating official land prices with respect to e.g. the impact of climate change that has occurred in the conditions of the Czech Republic in recent years. Pricing using the hedonic method is based on capturing individual factors separately. The evaluated soil ecological unit code consists of a 5-digit numerical code, which expresses the affiliation to the climate region (0-9, see table 1), the main soil unit (0-78), the slope of the land and the orientation to the point of the compass (0-9) and also the depth of the soil profile and skeletality (0-9). The derived hedonic pricing model is estimated using heteroscedasticity corrected estimator. The fitted model shows considerably high explanatory power and together with high parameter significance for majority of dummy variables (soil characteristics) as well as with theoretical and logical consistency represent a tool for new official land price settings in the process of land reevaluation due to the erosion and climate change effects.


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