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Journal articles on the topic 'Edaphic activities'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Meades, W. J., and B. A. Roberts. "A review of forest site classification activities in Newfoundland and Labrador." Forestry Chronicle 68, no. 1 (1992): 25–33. http://dx.doi.org/10.5558/tfc68025-1.

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This paper provides a review of past and present forest site classification activities in Newfoundland and Labrador over the last thirty years. Initially, research concentrated on the development of a classification system using floristic and edaphic criteria to define forest types. This was followed by a period in which the relationships between forest types and stand productivity were assessed. Subsequently, pilot projects were undertaken in which the forest site classification was incorporated into the biophysical land classification approach and applied to forest capability mapping. In rec

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2

Kumar, Sanath, Niall Hanan, Lara Prihodko, et al. "Alternative Vegetation States in Tropical Forests and Savannas: The Search for Consistent Signals in Diverse Remote Sensing Data." Remote Sensing 11, no. 7 (2019): 815. http://dx.doi.org/10.3390/rs11070815.

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Globally, the spatial distribution of vegetation is governed primarily by climatological factors (rainfall and temperature, seasonality, and inter-annual variability). The local distribution of vegetation, however, depends on local edaphic conditions (soils and topography) and disturbances (fire, herbivory, and anthropogenic activities). Abrupt spatial or temporal changes in vegetation distribution can occur if there are positive (i.e., amplifying) feedbacks favoring certain vegetation states under otherwise similar climatic and edaphic conditions. Previous studies in the tropical savannas of

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3

Brais, Suzanne, and Claude Camiré. "Keys for soil moisture regime evaluation for northwestern Quebec." Canadian Journal of Forest Research 22, no. 5 (1992): 718–24. http://dx.doi.org/10.1139/x92-096.

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Soil moisture regime is an important component of forest land classification at the local level, and in Quebec, it is a criterion for many decisions concerning forestry activities. To facilitate consistent evaluation of soil moisture regime, dichotomous keys were developed for the Abitibi–Temiscamingue region of northwestern Quebec using topographic and edaphic variables and a nonparametric discriminant classification procedure. Probability of correctly classifying a new observation ranges between 63 and 71%, whereas 98–99% of the observations are classified in their moisture class of origin o

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4

Gananca, J. F. T., I. Abreu, N. F. Sousa, et al. "Soil conditions and evolution of aluminium resistance among cultivated and wild plant species on the Island of Madeira." Plant, Soil and Environment 53, No. 6 (2008): 239–46. http://dx.doi.org/10.17221/2218-pse.

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Soil samples collected from different soil formations throughout the Island of Madeira were analysed for pH, aluminium (Al) and organic matter content. On average, the Madeira soils appeared to be acid with a mean pH of 5.01, containing 0.79 cmol/kg of ionic Al and 3.02% organic matter, which may create favourable conditions for the development of Al resistance among plant species inhabiting the island. Six plant species were evaluated for their resistance to Al using the erichrome cyanine R tests: three agricultural species including wheat (<i>Triticum aestivum</i> L. and <i&gt

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Ali, Hashim Mohamed, Joseph Mwanzia Nguta, Isaac Ole Mapenay, Fredrick Mutie Musila, Vincent Mokoro Omambia, and Dorine Nyak Matara. "Ethnopharmacological uses, biological activities, chemistry and toxicological aspects of Ocimum americanum var. americanum (Lamiaceae)." Journal of Phytopharmacology 10, no. 1 (2021): 56–60. http://dx.doi.org/10.31254/phyto.2021.10111.

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The rationale for the use of Ocimum americanum var. americanum in herbal medicine is largely based on the longstanding experience of traditional medicine practitioners. The genus Ocimum is extensively used in Eastern Africa in folkloric practice against a wide range of illnesses. The present paper intends to bring a comprehensive overview of O. americanum var. americanum in regard to its biological activities, ethnopharmacological uses, phytochemical and toxicological effects. The literature search was conducted using Google, Google Scholar, Chemical abstracts, Sciverse; JSTOR, Medline, PubMed

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Bautista-Cruz, Angélica, and Yolanda Donají Ortíz-Hernández. "Hydrolytic soil enzymes and their response to fertilization: a short review." Comunicata Scientiae 6, no. 3 (2015): 255. http://dx.doi.org/10.14295/cs.v6i3.962.

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Enzymes are proteins that catalyze chemical reactions in living systems, transforming specific substrates into the products needed in biological cycles and for many edaphic processes. Soil enzymatic activities have been proposed as soil quality indicators, due to their relation with soil biology. Although the long-term effects of organic and mineral fertilization on physical and chemical soil properties have been previously studied, little is known about their effects on microbial community structure, microbial biomass carbon, microbial activity and enzymatic activity. Some studies report that

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7

Sun, Jinhua, Liu Yang, Jie Wei, Jine Quan, and Xitian Yang. "The responses of soil bacterial communities and enzyme activities to the edaphic properties of coal mining areas in Central China." PLOS ONE 15, no. 4 (2020): e0231198. http://dx.doi.org/10.1371/journal.pone.0231198.

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8

Liu, Wei, Guangming Nan, Muhammad Farrukh Nisar, and Chunpeng Wan. "Chemical Constituents and Health Benefits of Four Chinese Plum Species." Journal of Food Quality 2020 (July 22, 2020): 1–17. http://dx.doi.org/10.1155/2020/8842506.

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Prunus is a large genus in the Rosaceae family of flowering plants, comprising over 340 species inhabiting variable landscapes in the world. Over 500 listed phytochemicals have been isolated from this single genus so far. The present study focused four Chinese Prunus species, viz., Prunus cerasifera, Prunus domestica, Prunus salicina, and Prunus spinosa, due to their uses, demand, nutritional value, medicinal importance, and diverse biological potential. The current review article highlights the details about the active phytochemicals and various pharmacological activities already reported. Al

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9

MENESES, MARIA ECILENE N. S., MARCONDES L. COSTA, DIRK ENTERS, and HERMANN BEHLING. "Environmental changes during the last millennium based on multi-proxy palaeoecological records in a savanna-forest mosaic from the northernmost Brazilian Amazon region." Anais da Academia Brasileira de Ciências 87, no. 3 (2015): 1623–51. http://dx.doi.org/10.1590/0001-3765201520130074.

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ABSTRACTThe environmental changes and the dynamics of the savanna-forest mosaic, over the last 1050 years, have been reconstructed by pollen, charcoal, radiocarbon dating mineralogical and geochemical analyses of sediment cores taken from three different Mauritia flexuosapalm swamps in the northernmost part of the Brazilian Amazon region (northern state of Roraima). Studies on the relationship between the modern pollen rain and the regional vegetation provide additional information for the interpretation of the fossil pollen records. The fossil pollen assemblages and geochemical results indica

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10

King, Andrew J., Debendra Karki, Laszlo Nagy, Adina Racoviteanu, and Steve K. Schmidt. "Microbial biomass and activity in high elevation (>5100 meters) soils from the Annapurna and Sagarmatha regions of the Nepalese Himalayas." Himalayan Journal of Sciences 6, no. 8 (2011): 11–18. http://dx.doi.org/10.3126/hjs.v6i8.2303.

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High elevation subnival-zone soils are increasing in spatial extent in the Himalayas due to glacial retreat and grazing pressures. These seemingly barren soils actually harbor significant microbial diversity but have remained mostly unstudied in all of the major mountain ranges of the Earth. Here we describe a preliminary survey of subnival-zone soils and one vegetated high-elevation soil in the Annapurna and Sagarmatha regions of the Nepalese Himalayas. We examined microbial biomass and activity as well as key microclimatic and edaphic variables that may control microbial activity in these so

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11

FADDA, SYLVAIN, JEROME ORGEAS, PHILIPPE PONEL, ELISE BUISSON, FRANCK TORRE, and THIERRY DUTOIT. "Past cultivation is a factor driving organization of dry grassland ground-active beetle communities." Environmental Conservation 34, no. 2 (2007): 132–39. http://dx.doi.org/10.1017/s0376892907003839.

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The steppes of the Mediterranean Basin, traditionally managed since ancient times, have been drastically degraded by recent human activities, and are a valuable model to study the impact of present and past anthropogenic disturbances. Climate and edaphic constraints and free sheep grazing have contributed for over 6000 years to the development of a steppe unique to France, but similar to many others in the Mediterranean Basin. This steppe is increasingly threatened by both industrialization and cultivation, and formerly-cultivated plots developed less species-rich vegetation than the steppe. H

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S. N, Nguluu, Karanja J., Kimatu J.N, et al. "Refining Dryland Farming Systems as a Means of Enhancing Agrodiversity and Food Security in Eastern Kenya: A review." JOURNAL OF ADVANCES IN AGRICULTURE 3, no. 1 (2014): 142–49. http://dx.doi.org/10.24297/jaa.v3i1.5410.

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Drylands which cover one third of the earth’s land surface and almost 80% of Kenya’s land surface are being used to grow dryland crops such as maize, beans, sorghum, millets and livestock. Studies show that refined farming systems can be used in enhancing ecosystem sustainability, through the promotion of species and crop diversity. For example, cropping patterns involving intercropping legumes and cereals have demonstrated varying success in maintenance of crop diversity in the Kenyan drylands showing land equivalent ratios (LER) > 1.0, although such benefits are often lost during low rain

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13

Knelman, Joseph, Steve Schmidt, Vanessa Garayburu-Caruso, Swatantar Kumar, and Emily Graham. "Multiple, Compounding Disturbances in a Forest Ecosystem: Fire Increases Susceptibility of Soil Edaphic Properties, Bacterial Community Structure, and Function to Change with Extreme Precipitation Event." Soil Systems 3, no. 2 (2019): 40. http://dx.doi.org/10.3390/soilsystems3020040.

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The intensity and frequency of ecosystem disturbances are shifting with climate change, and multiple disturbances in close succession have the potential to compound their independent effects and strongly alter ecosystem structure and function. In this paper, we examine the effects of an extreme precipitation event on a montane forest landscape that was previously decimated by wildfire (37 months prior) relative to an unburned site in the same ecosystem. We assessed responses in soil edaphic properties, bacterial community composition and assembly, and soil enzyme activities involved in carbon

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14

Mohamad Jaffar, Aina Nadia Najwa, Mohd Effendi Wasli, Mugunthan Perumal, Jonathan Lat, and Hamsawi Sani. "Effects of Soil Compaction and Relative Light Intensity on Survival and Growth Performance of Planted Shorea macrophylla (de Vriese) in Riparian Forest along Kayan Ulu River, Sarawak, Malaysia." International Journal of Forestry Research 2018 (August 19, 2018): 1–11. http://dx.doi.org/10.1155/2018/6329295.

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A study was conducted in riparian forest along Kayan Ulu River, Sarawak, Malaysia, to investigate the effects of soil compaction and relative light intensity (RLI) on survival and growth performance of planted Shorea macrophylla. The study sites were stands reforested in different years (1996: SPD96; 1997: SPD97; 1998: SPD98; 1999: SPD99). The survival, growth performance, soil compaction, and RLI were measured. SPD96 trees had the highest survival (84%) and showed the most favourable growth. Average height, mean annual increment in height, and RLI were highest in SPD97 while mean annual incre

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15

Souza, Maysa F. V. R., and Rodrigo L. Ferreira. "Pandora is on Earth: new species of Eukoenenia (Palpigradi) emerging at risk of extinction." Invertebrate Systematics 32, no. 3 (2018): 581. http://dx.doi.org/10.1071/is17049.

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In 2008 the change to the Brazilian legislation regarding the use of natural caves has caused an increase in the number of studies on environmental impacts involving caves. The legislation requires the classification of such environments according to their importance, and caves that are not classified highly may be irreversibly impacted. Thus, caves in rocks of high economic interest have been intensively sampled, which has resulted in the collection of several specimens of Palpigradi in them. The Iron Quadrangle (in Minas Gerais state) stands out among these areas as one the most important so

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16

Mwakalukwa, Ezekiel Edward, Henrik Meilby, and Thorsten Treue. "Floristic Composition, Structure, and Species Associations of Dry Miombo Woodland in Tanzania." ISRN Biodiversity 2014 (May 8, 2014): 1–15. http://dx.doi.org/10.1155/2014/153278.

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For the majority of forest reserves in Tanzania, biodiversity is poorly documented. This study was conducted to assess species richness (woody species), diversity, and forest structure and to examine relationships between species occurrence and topographic and edaphic factors in the Gangalamtumba Village Land Forest Reserve, a dry Miombo woodland area in Tanzania. A total of 35 nested circular plots with radii of 5, 15, and 20 m were used to collect data on woody species and soil samples across the 6,065 ha community-managed forest reserve. Stumps were measured 20 cm above ground. A total of 8

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17

Paudel, Roshan, Philip Waisen, and Koon-Hui Wang. "Exploiting the Innate Potential of Sorghum/Sorghum–Sudangrass Cover Crops to Improve Soil Microbial Profile That Can Lead to Suppression of Plant-Parasitic Nematodes." Microorganisms 9, no. 9 (2021): 1831. http://dx.doi.org/10.3390/microorganisms9091831.

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Sorghum/sorghum–sudangrass hybrids (SSgH) have been used as a cover crop to improve soil health by adding soil organic matter, enhancing microbial activities, and suppressing soil-borne pathogens in various cropping systems. A series of SSgH were screened for (1) allelopathic suppression and (2) improvement of soil edaphic factors and soil microbial profile against plant-parasitic nematode (PPNs). The allelopathic potential of SSgH against PPNs is hypothesized to vary by variety and age. In two greenhouse bioassays, ‘NX-D-61′ sorghum and the ‘Latte’ SSgH amendment provided the most suppressive

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18

Moore, Jean-David, Josef H. Görres, and John W. Reynolds. "Exotic Asian pheretimoid earthworms (Amynthas spp., Metaphire spp.): Potential for colonisation of south-eastern Canada and effects on forest ecosystems." Environmental Reviews 26, no. 2 (2018): 113–20. http://dx.doi.org/10.1139/er-2017-0066.

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Exotic species invasions are among the most significant global-scale problems caused by human activities. They can seriously threaten the conservation of biological diversity and of natural resources. Exotic European earthworms have been colonizing forest ecosystems in northeastern United States and southern Canada since the European settlement. By comparison, Asian earthworms began colonizing forests in the northeastern United States more recently. Since Asian species have biological traits compatible with a greater potential for colonization and disturbance than some European species, appreh

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19

Geyer, Kevin M., Cristina D. Takacs-Vesbach, Michael N. Gooseff, and John E. Barrett. "Primary productivity as a control over soil microbial diversity along environmental gradients in a polar desert ecosystem." PeerJ 5 (July 25, 2017): e3377. http://dx.doi.org/10.7717/peerj.3377.

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Primary production is the fundamental source of energy to foodwebs and ecosystems, and is thus an important constraint on soil communities. This coupling is particularly evident in polar terrestrial ecosystems where biological diversity and activity is tightly constrained by edaphic gradients of productivity (e.g., soil moisture, organic carbon availability) and geochemical severity (e.g., pH, electrical conductivity). In the McMurdo Dry Valleys of Antarctica, environmental gradients determine numerous properties of soil communities and yet relatively few estimates of gross or net primary prod

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Mishra, Siba Prasad. "Physicochemical Indices of Ground Water and Their Geoponic Management, in Coastal Odisha, India." Engineering Management Research 5, no. 2 (2016): 47. http://dx.doi.org/10.5539/emr.v5n2p47.

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<p>Agriculture can not exist without water. At present the old practice of arbitrary use of water in irrigation sector has become unethical. Odisha is an agrarian state in east coast of India. For better yield of crops, quality of water is intricately related to the aquifer geometry, ground water flow regime and its quality. Coastal Odisha is having an area of 14700 sqkm and demography of 1.26 million. The land has mostly water logged alluvial crop land, deciduous forests or sandy dunes with an astomosed channels of hexa-deltaic rivers. The edaphic factors demand improvement of quality o

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Nielsen, Scott E., Jacqueline M. Dennett, and Christopher W. Bater. "Predicting Occurrence, Abundance, and Fruiting of a Cultural Keystone Species to Inform Landscape Values and Priority Sites for Habitat Enhancements." Forests 11, no. 7 (2020): 783. http://dx.doi.org/10.3390/f11070783.

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Environmental niche modeling is an increasingly common tool in conservation and management of non-timber species. In particular, models of species’ habitats have been aided by new advances in remote sensing and it is now possible to relate forest structure variables to understory species at a relatively high resolution over large spatial scales. Here, we model landscape responses for a culturally-valued keystone shrub, velvet-leaf blueberry (Vaccinium myrtilloides Michaux), in northeast Alberta, Canada, to better understand the environmental factors promoting or limiting its occurrence, abunda

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Spiller, Márcia Soares, Claiton Spiller, and Juliana Garlet. "Arthropod bioindicators of environmental quality." REVISTA AGRO@MBIENTE ON-LINE 12, no. 1 (2017): 41. http://dx.doi.org/10.18227/1982-8470ragro.v12i1.4516.

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The phylum Arthropoda is one of the most diverse groups under the terrestrial surface comprising different classes of insects that occupy different environments. Some groups have a close relationship with the habitat they occupy, responding significantly to changes in the environment, thus indicating the level of change in the environment by their presence or absence. The present study aimed to demonstrate the importance of edaphic fauna as a bioindicator of environmental quality. This is a bibliographic review based on specialized consultation of scientific articles in the databases Google Sc

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Zouidi, Mohamed, Amine Habib Borsali, Ayoub Allam, and Raphael Gros. "Characterization of coniferous forest soils in the arid zone." Forestry Studies 68, no. 1 (2018): 64–74. http://dx.doi.org/10.2478/fsmu-2018-0006.

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Abstract Arid zones are very harsh environments characterized by binding edaphic and climatic factors, their rainfall is low and irregular accentuated by high temperatures and their soils are fragile and vulnerable. In recent years, it has been noted that vegetation is regressing and that the majority of reforestation has been a failure. Our study aims to know the physico-chemical and microbiological characteristics of forest soils in the pinewoods of an area of the highlands of western Algeria (Naama). For this we analyzed several soil samples spread over five sampling stations in a forest of

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Dennis, Matthew, Luke Beesley, Michael Hardman, and Philip James. "Ecosystem (Dis)benefits Arising from Formal and Informal Land-Use in Manchester (UK); a Case Study of Urban Soil Characteristics Associated with Local Green Space Management." Agronomy 10, no. 4 (2020): 552. http://dx.doi.org/10.3390/agronomy10040552.

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Urban soils are subject to anthropogenic influences and, reciprocally, provide benefits and disbenefits to human wellbeing; for example carbon storage, nutrient cycling and the regulation trace element and contaminant mobility. Collective stewardship of urban green commons provides contemporary examples of the diversity of uses and management of green space in cities and represents a growing movement in user participation in, and awareness of, the importance of urban ecological health. Exploring the range of social-ecological benefits exemplified in the urban environment has generally focused

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Richter, M. "To what extent do natural disturbances contribute to Andean plant diversity? A theoretical outline from the wettest and driest parts of the tropical Andes." Advances in Geosciences 22 (October 13, 2009): 95–105. http://dx.doi.org/10.5194/adgeo-22-95-2009.

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Abstract. This paper deals with natural disturbances and their impact on vascular plant enrichment at two climatically contrasting Andean ranges, i.e. the perhumid Cordillera Real in southern Ecuador and the arid Cordillera de Atacama in northern Chile. In the first case, main triggers for an additional input of pioneer species during succession stages initiated by perturbations are landslides, mudflows, and, to a lesser extent, cohort mortality, floods, and wildlife damages. Droughts and wind are stressors, which reduce plant growth but hardly plant diversity, in contrast to enhanced UV radia

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FUENTES, F. F., D. BAZILE, A. BHARGAVA, and E. A. MARTÍNEZ. "Implications of farmers’ seed exchanges for on-farm conservation of quinoa, as revealed by its genetic diversity in Chile." Journal of Agricultural Science 150, no. 6 (2012): 702–16. http://dx.doi.org/10.1017/s0021859612000056.

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SUMMARYQuinoa cultivation in Chile presents an ancient and active complex of geographic, climatic, social and cultural interactions that has determined its current biodiversity in the three main growing zones (north, central and south). Importantly, these interactions involve the participation of farmers, whose activities are at the base of seed exchange networks due to their knowledge andin situconservation of genetic diversity. The present study reports how a better understanding of farmers’ seed exchanges and local production practices could impact the genetic structure and diversity of qui

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Mikan, Carl J., and Marc D. Abrams. "Altered forest composition and soil properties of historic charcoal hearths in southeastern Pennsylvania." Canadian Journal of Forest Research 25, no. 5 (1995): 687–96. http://dx.doi.org/10.1139/x95-076.

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This study related age structure and composition of forests in southeastern Pennsylvania to edaphic properties caused by the activities of a local charcoal iron furnace from the late 18th to the late 19th century. Forests surrounding charcoal hearths were harvested on 20- to 30-year rotations to supply wood for charcoal production in earthmound kilns. Charcoal hearths were created by a recurring cycle of disturbance, including the removal of established vegetation, intense heat, and the deposition of charcoal. Thirty-eight hearths of Hopewell Furnace National Historic Site were examined to des

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Kupfer, John A., and David M. Cairns. "The suitability of montane ecotones as indicators of global climatic change." Progress in Physical Geography: Earth and Environment 20, no. 3 (1996): 253–72. http://dx.doi.org/10.1177/030913339602000301.

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Because of the difficulties involved with separating natural fluctuations in climatic variables from possible directional changes related to human activities (e.g., heightened atmospheric CO2 concentrations related to fossil fuel consumption), some researchers have focused on developing alternative indicators to detect hypothesized climate changes. It has, for example, been suggested that the locations of ecotones, transitions between adjacent ecosystems or biomes, should be monitored. It is assumed that changes in climate, especially increases in atmospheric temperature, will result in shifts

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Matei, Gabi-Mirela, Sorin Matei, and Victoria Mocanu. "Assessing the role of soil microbial communities of natural forest ecosystem." EuroBiotech Journal 4, no. 1 (2020): 01–07. http://dx.doi.org/10.2478/ebtj-2020-0001.

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AbstractIn forests, edaphic microbial communities are involved in litter decomposition and soil forming processes, with major contribution to humification, especially bacteria and fungi being responsible for the main ecosystem services fulfilled by the soil. Research has been carried out aiming to characterize the structure and diversity of microbial communities in the Rendzic Leptosols (WRB) under natural deciduous forest from Visterna, Babadag Plateau and to assess their contribution to ecosystem services provided by soil. The paper presents the results of quantitative estimations and taxono

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KURNIAWAN, ISMA DWI, CAHYO RAHMADI, REZZY EKO CARAKA, and TIARA E. ARDI. "Short Communication: Cave-dwelling Arthropod community of Semedi Show Cave in Gunungsewu Karst Area, Pacitan, East Java, Indonesia." Biodiversitas Journal of Biological Diversity 19, no. 3 (2018): 857–66. http://dx.doi.org/10.13057/biodiv/d190314.

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Kurniawan ID, Rahmadi C, Caraka RE, Ardi TE. 2018. Short Communication: Cave-dwelling Arthropod community of Semedi Show Cave in Gunungsewu Karst Area, Pacitan, East Java, Indonesia. Biodiversitas 19: 857-866. Arthropods are a major group of animals which have significant roles in maintaining cave ecosystem stability. Semedi is a new show cave, but information about arthropods in this cave was not available. The use of cave as a tourist attraction will bring environmental changes which potentially disturb cave-dwelling arthropod community. This study aimed to measure arthropod diversity and th

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Silva, Cillas Pollicarto, Paulo Furtado Mende Filho, Vânia Felipe Freire Gomes, Claudia Miranda Martins, Cleyton Saialy Medeiros Cunha, and Márcio Godofrêdo Rocha Lobato. "Glomalin-Related Soil Protein Content in Areas of Degraded and Revegetated Caatinga in the Municipality of Irauçuba." Journal of Agricultural Science 10, no. 1 (2017): 302. http://dx.doi.org/10.5539/jas.v10n1p302.

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Anthropic activities, combined with the natural ones, may trigger soil degradation, which has increased day by day and contributed to accentuating the desertification processes, resulting in losses of biodiversity and fertility of the soils. Because of that, the utilization of tools that indicate the stages of such degradation and recovery becomes necessary, in order to make viable and adequate management of these areas. Thus, the study on arbuscular mycorrhizal fungi (AMF), as a perspective to facilitate the recovery of degraded areas has increased, especially for the production of glomalin-r

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Hernandez, Teresa, José Guillermo Berlanga, Isabel Tormos, and Carlos Garcia. "Organic versus inorganic fertilizers: Response of soil properties and crop yield." AIMS Geosciences 7, no. 3 (2021): 415–39. http://dx.doi.org/10.3934/geosci.2021024.

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<abstract> <p>The decrease in soil productivity and quality caused by the continuous and abusive use of mineral fertilizers makes necessary to adopt more sustainable agricultural soil management strategies that help to maintain soil edaphic fertility. In light of these considerations, we have evaluated the effect of organic vs. inorganic fertilization on soil microbial communities, soil quality, and crop yield in a melon crop. The following treatments were tested: i) aerobic sewage sludge from a conventional wastewater treatment plant (WWTP) using aerobic bacteria (SS); ii) aerobic

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Cherniak, V. M., V. M. Prokopchuk, and V. V. Monarkh. "Some prospects of growing and use of china aster for space greening in Podillia zone." Scientific Bulletin of UNFU 28, no. 7 (2018): 22–26. http://dx.doi.org/10.15421/40280704.

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Annual aster, also called China aster (Callistepsus chinensis (L.) Nees) is one of the priority ornamental flower plants for the introduction both in Ukraine and throughout the world. Domestic and foreign scientists are diverse in the study of this plant. Most of the works published during the last decades are devoted to the study and search for the most favorable agrotechnical techniques for aster cultivation under different conditions. The research was being carried out during 2016‑2017 on the territory of the Bio-stationary of Vinnytsia National Agrarian University with partial subsequent d

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Githinji, Edward K., Lucy W. Irungu, Paul N. Ndegwa, et al. "Species Composition, Phenotypic and Genotypic Resistance Levels in Major Malaria Vectors in Teso North and Teso South Subcounties in Busia County, Western Kenya." Journal of Parasitology Research 2020 (January 25, 2020): 1–17. http://dx.doi.org/10.1155/2020/3560310.

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Introduction. Knockdown resistance (kdr) is strongly linked to pyrethroid insecticide resistance in Anopheles gambiae in Africa, which may have vital significance to the current increased use of pyrethroid-treated bed net programmes. The study is aimed at determining species composition, levels of insecticide resistance, and knockdown patterns in Anopheles gambiae sensu lato in areas with and areas without insecticide resistance in Teso North and Teso South subcounties, Western Kenya. Materials and Methods. For WHO vulnerability tests, mosquito larvae were sampled using a dipper, reared into 3

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Mhango, Wezi G., Sieglinde S. Snapp, and George Y. K. Phiri. "Opportunities and constraints to legume diversification for sustainable maize production on smallholder farms in Malawi." Renewable Agriculture and Food Systems 28, no. 3 (2012): 234–44. http://dx.doi.org/10.1017/s1742170512000178.

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AbstractSustainable intensification of smallholder farms in Africa is highly dependent on enhancing biological nitrogen fixation (BNF). Legume diversification of maize-based systems is a core example of sustainable intensification, with the food security of millions of farm families at stake. This study highlights the constraints and opportunities associated with the adoption of legumes by smallholder farmers in southern Africa. A two-part survey of households and farm fields (n=88) was conducted in the Ekwendeni watershed of northern Malawi. Participatory research and education activities hav

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Marques, Andréa Rodrigues, José Pires de Lemos Filho, and Rubens Custódio da Mota. "Diversity and conservation status of bromeliads from Serra da Piedade, Minas Gerais, Brazil." Rodriguésia 63, no. 2 (2012): 243–55. http://dx.doi.org/10.1590/s2175-78602012000200001.

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The Espinhaço Mountain Range in Minas Gerais state in southeastern Brazil is a center of endemism of the Bromeliaceae, mainly in campo rupestre montane vegetation that grows under rigorous edapho-climatic conditions. This study sought to improve our knowledge of the Bromeliaceae from Serra da Piedade in the extreme southern portion of the Espinhaço Mountain Range where ironstone outcrops predominate. Conservation status and spatial distribution of these plants were analyzed as well as floristic similarities with other regions with rocky outcrops. Twenty-five bromeliad species were found in Ser

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Napoletano, Pasquale, Claudio Colombo, Erika Di Iorio, et al. "Integrated Approach for Quality Assessment of Technosols in Experimental Mesocosms." Sustainability 13, no. 16 (2021): 9101. http://dx.doi.org/10.3390/su13169101.

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The assessment of Technosols quality in urban environments is pivotal for the maintenance of ecosystems impacted by human activities. The study was performed on Technosols constructed in experimental mesocosms in the suburban area of Naples (Southern Italy) to highlight changes in the main soil properties over eight years and to identify the most suitable indices at quality monitoring. In this study, several chemical, biological, and integrated indices were analysed to evaluate the mineral accumulation, potential ecological risk, edaphon activity, fertility, and the overall soil quality. The T

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Cunha, Tony Jarbas, Iêdo Bezerra Sá, Manoel Batista de Oliveira Neto, et al. "Uso Atual e Quantificação de Áreas Degradadas na Margem Direita do Rio São Francisco no Município de Curaçá-BA (Current Use and Quantification of Degraded Areas at the Right Riverside of São Francisco River at Curaçá Municipality (Bahia, Brazil))." Revista Brasileira de Geografia Física 4, no. 6 (2012): 1197. http://dx.doi.org/10.26848/rbgf.v4i6.232766.

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A paisagem do Submédio do Vale do São Francisco tem, ao longo dos anos, passado por constantes alterações devido às atividades antrópicas, onde a vegetação original da Caatinga hiperxerófila foi gradativamente sendo eliminada pelo processo extrativista e parte cedendo espaço ao processo de uso agrícola. Dessa maneira, muitas áreas sem aptidão ou de aptidão restrita para o uso agrícola são cultivadas, aumentando o risco de degradação pelo efeito da erosão que atinge, inclusive, a vegetação ciliar. A recuperação desta vegetação é um grande desafio, haja vista as dificuldades de conciliar a garan

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El-Tablawy, Neamat H., Hoda A. Mansour, and Abd El-Salam M. Shaaban. "Antioxidant activities of some edaphic algae in Egypt." Beni-Suef University Journal of Basic and Applied Sciences 9, no. 1 (2020). http://dx.doi.org/10.1186/s43088-020-00060-0.

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Rheault, Guillaume, Esther Lévesque, and Raphaël Proulx. "Diversity of plant assemblages dampens the variability of the growing season phenology in wetland landscapes." BMC Ecology and Evolution 21, no. 1 (2021). http://dx.doi.org/10.1186/s12862-021-01817-6.

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Abstract Background The functioning of ecosystems is highly variable through space and time. Climatic and edaphic factors are forcing ecological communities to converge, whereas the diversity of plant assemblages dampens these effects by allowing communities’ dynamics to diverge. This study evaluated whether the growing season phenology of wetland plant communities within landscapes is determined by the climatic/edaphic factors of contrasted regions, by the species richness of plant communities, or by the diversity of plant assemblages. From 2013 to 2016, we monitored the phenology and florist

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Felix, J. W., E. Sánchez-Chávez, E. de-la-Cruz-Lázaro, and C. Márquez-Quiroz. "Edaphic and Foliar Biofortification of Common Black Bean (Phaseolus vulgaris L.) with Iron." LEGUME RESEARCH - AN INTERNATIONAL JOURNAL, Of (July 15, 2020). http://dx.doi.org/10.18805/lr-553.

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Background: Biofortification is the process by which the nutritional quality of food crops is improved through agronomic practices, conventional plant breeding, or modern biotechnology. The objective in this work was to determine the effect of iron on mineral content, proximal composition, bioactive compound content and antioxidant activity in the bean grain.Methods: In this present work, we biofortificated plants of common bean (Phaseolus vulgaris L.), with doses of iron sulfate (0, 0.25, and 0.50 g) and foliar iron chelate (0, 25, 50 and 100 µM). In the grain content mineral (iron, zinc, cop

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Wang, Hai-Hua, Hong-Long Chu, Qing Dou, et al. "Seasonal Changes in Pinus tabuliformis Root-Associated Fungal Microbiota Drive N and P Cycling in Terrestrial Ecosystem." Frontiers in Microbiology 11 (January 18, 2021). http://dx.doi.org/10.3389/fmicb.2020.526898.

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In terrestrial ecosystems, mycorrhizal roots play a key role in the cycling of soil carbon (C) and other nutrients. The impact of environmental factors on the mycorrhizal fungal community has been well studied; however, the seasonal variations in the root-associated fungal microbiota affected by environmental changes are less clear. To improve the understanding of how environmental factors shape the fungal microbiota in mycorrhizal roots, seasonal changes in Pinus tabuliformis root-associated fungi were investigated. In the present study, the seasonal dynamics of edaphic properties, soil enzym

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Iqbal, Majid, Shujaul Mulk Khan, Zeeshan Ahmad, et al. "Vegetation classification of the Margalla foothills, Islamabad under the influence of edaphic factors and anthropogenic activities using modern ecological tools." Pakistan Journal of Botany 53, no. 5 (2021). http://dx.doi.org/10.30848/pjb2021-5(22).

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Medeiros, Amanda Silva de, João Gomes da Costa, Kallianna Dantas Araújo, et al. "Anthropic interference in mangrove areas of the Mundaú-Manguaba estuarine lagoon complex (CELMM), Alagoas (Brazil) as a case study." Ciência Rural 50, no. 10 (2020). http://dx.doi.org/10.1590/0103-8478cr20200356.

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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.

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Belesky, David Paul, and Dariusz Piotr Malinowski. "Grassland communities in the USA and expected trends associated with climate change." Acta Agrobotanica 69, no. 2 (2016). http://dx.doi.org/10.5586/aa.1673.

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Grasslands, including managed grazinglands, represent one of the largest ecosystems on the planet. Managed grazinglands in particular tend to occupy marginal climatic and edaphic resource zones, thus exacerbating responses in net primary productivity relative to changes in system resources, including anthropogenic factors. Climate dynamism, as evident from the fossil record, appears to be a putative feature of our planet. Recent global trends in temperature and precipitation patterns seem to differ from long-term patterns and have been associated with human activities linked with increased gre

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Souza, Maysa F. V. R., and Rodrigo L. Ferreira. "Corrigendum to: Pandora is on Earth: new species of Eukoenenia (Palpigradi) emerging at risk of extinction." Invertebrate Systematics, 2020. http://dx.doi.org/10.1071/is17049_co.

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In 2008 the change to the Brazilian legislation regarding the use of natural caves has caused an increase in the number of studies on environmental impacts involving caves. The legislation requires the classification of such environments according to their importance, and caves that are not classified highly may be irreversibly impacted. Thus, caves in rocks of high economic interest have been intensively sampled, which has resulted in the collection of several specimens of Palpigradi in them. The Iron Quadrangle (in Minas Gerais state) stands out among these areas as one the most important so

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Llinares Palacios, Josep Vicent, Juan A. Llorens-Molina, Jaume Mulet, and Sandra Vacas. "Soil parameters and bioclimatic characteristics affecting essential oil composition of leaves of Pistacia lentiscus L. from València (Spain)." Spanish Journal of Soil Science 11 (March 13, 2021). http://dx.doi.org/10.3232/sjss.2021.v11.n1.06.

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The variability of the soils found in an area together with the diversity of the bioclimatic parameters will affect the chemical profile of plant species, in our case <em>Pistacia lentiscus</em> L. The aim of this work is to analyse the bioclimatic characteristics and soil parameters affecting the essential oil (EO) composition of the leaves of the <em>Pistacia lentiscus</em> L. growing in València (Spain). The EO compositions of dried leaves of <em>Pistacia lentiscus</em> L. from five sampling sites with noticeable differences in soil and climate features w

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Gautam, Chandan Kumar, Huei-Hsuan Tsai, and Wolfgang Schmidt. "IRONMAN tunes responses to iron deficiency in concert with environmental pH." Plant Physiology, July 27, 2021. http://dx.doi.org/10.1093/plphys/kiab329.

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Abstract Iron (Fe) is an essential mineral element that governs the composition of natural plant communities and limits crop yield in agricultural ecosystems due to its extremely low availability in most soils, particularly at alkaline pH. To extract sufficient Fe from the soil under such conditions, some plants, including Arabidopsis (Arabidopsis thaliana), secrete Fe-mobilizing phenylpropanoids, which mobilize sparingly soluble Fe hydroxides by reduction and chelation. We show here that ectopic expression of the peptides IRONMAN (IMA1) and IMA2 improves growth on calcareous soil by inducing

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Custer, Gordon F., Linda T. A. van Diepen, and William L. Stump. "Structural and Functional Dynamics of Soil Microbes following Spruce Beetle Infestation." Applied and Environmental Microbiology 86, no. 3 (2019). http://dx.doi.org/10.1128/aem.01984-19.

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ABSTRACT As the range of bark beetles expands into new forests and woodlands, the need to understand their effects on multiple trophic levels becomes increasingly important. To date, much attention has been paid to the aboveground processes affected by bark beetle infestation, with a focus on photoautotrophs and ecosystem level processes. However, indirect effects of bark beetle on belowground processes, especially the structure and function of soil microbiota remains largely a black box. Our study examined the impacts of bark beetle-induced tree mortality on soil microbial community structure

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Nworo, Franklin Bantar, Njoh Roland Ndah, and Egbe Enow Andrew. "Stand Structure, Regeneration Status and Distribution Patterns of Six Important Tree Species along Altitudinal Gradients at the Kilum-Ijim Forest Reserve, Cameroon." Journal of Agriculture and Ecology Research International, May 26, 2020, 41–57. http://dx.doi.org/10.9734/jaeri/2020/v21i430140.

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Tropical montane forests are considered to be one of the most species diverse ecosystems. These areas pose specific edaphic and environmental characteristics which enable these areas to harbour wide varieties of organisms. Some of these organisms are threatened and others are endemic to the area. The quest for food and other resources has resulted to indiscriminate exploitation of these montane forest. This study aimed to investigate the stand structure, distribution patterns and regeneration status of six tree species (Nuxia congesta, Pittosporum mannii, Podocarpu slatifolius, Prunus africana

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