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Showing 1 to 20 of 33 for “"bioindicator"”.
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Monitoring biodiversity of San Francisco Peninsula grasslands using Lepidoptera as a bioindicator
… evaluate the use of the taxa Lepidoptera as a bioindicator of biodiversity to assess the environmental impacts of these techniques. The application of herbicide is the most commonly used vegetation management technique evaluated. Spot spraying minimizes the direct effects to Lepidoptera, which …
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Assessing Brook Stickleback (Culaea inconstans) as a bioindicator for endocrine disrupting compounds in aquatic environments
… suggests that they may have applications as a bioindicator of EDCs in freshwater systems. Therefore, the overall objective of this thesis was to determine if brook stickleback are a suitable bioindicator species for EDCs by evaluating their response and sensitivity to estrogenic and …
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Planetary Science Meets Chemistry: Studying Potential Biosignature Gases in Terrestrial Exoplanet Atmospheres
… whether hydrogen chloride (HCl) is a good bioindicator in an H₂-dominated atmosphere. First, we find that NH₃ in a terrestrial planet's atmosphere is generally a good biosignature gas, primarily because terrestrial planets have no significant known abiotic NH₃ source. NH₃ can accumulate in …
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Assessing biofilm and epiphytes on seagrass leaves as bioindicators of environmental change
… displayed some promising attributes as a good bioindicator of nutrient enrichment within benthic environments, however there are limited studies within seagrass habitats. Algal epiphytes within seagrass meadows are frequently studied and are considered good bioindicators of light limitation, …
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Relations among biochemical, individual, and community indicators of stress in fish: stream degradation in the Clinch River drainage
Bioindicators were used to assess degradation to fish resident to the Clinch River drainage. Species studied were rock bass (<i>Ambloplites rupestris</i>), northern hogsucker (<i>Hypentelium nigricans</i>) and striped shiner (<i>Luxilus chrysocephalus</i>). The data were collected in parallel with …
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Development of defined media for motility and for growth of Spirillum volutans, with special reference to biological monitoring of pollutants and to obligate microaerophilism of bacteria
… uncoordination in S. volutans was studied as a bioindicator of toxicity. Uncoordination is produced by a variety of agents. Cells displaying normal motility show frequent reversal of direction, accompanied by reversal of orientation of their bipolar fascicles of flagella. In uncoordinated cells, …
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Profiling Bacterial Community Dynamics For Wildlife Ecology and Geological Mineral Exploration
… sequence variants (ASVs) with kimberlitic bioindicator potential. Two unclassified ASVs from the Bacteroidota family env.OPS 17 were highly specific to kimberlitic soils, and conversely three ASVs from the uncultured acidobacteria genus RB41 exhibited specificity to background soils. The …
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Water sourcing by riparian tree species in ephemaral rivers
… if any of the studied species could be used as a bioindicator for tree health in relation to water availability. T. usneoides was previously observed to be less tolerant to drought conditions than F. albida and A. erioloba, while this study has shown F. albida to be structurally the most …
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The response of 12 clones of eastern white pine (Pinus strobus L.) to ozone and nitrogen dioxide
… step in the development of an air pollution bioindicator system at the installation.
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Spatial and temporal analysis of pharmaceutical concentrations and chitobiase activity in the Upper Tennessee River
… aquatic invertebrates and may be used as a bioindicator of aquatic invertebrate population health. These two measurements were compared to determine if either total or single pharmaceuticals correlate with chitobiase concentrations. The method for the simultaneous quantification of 14 …
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The Central Stoneroller, Campostoma Anomalum, as an Indicator of Heavy Metal Contamination Using Otolith Age Determination and Growth Analysis
… eastern U.S., was investigated as a potential bioindicator for heavy metal pollution. This species is a benthic algivore and detritivore that is exposed to heavy metals that accumulate in the sediment. It was hypothesized that young-of-the-year stonerollers from an impacted site would exhibit a …
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Evaluating Relationships between Mercury Concentrations in Air and in Spanish Moss (<em>Tillandsia Usneoides</em> L.)
… and lack of temporal or spatial integration. Bioindicators, however, may serve as an integrative tool to add to conventional mercury measurement techniques. Spanish moss (Tillandsia usneoides L.) is a potential bioindicator of atmospheric mercury concentration in the southeastern United States …
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Benthic metrics as indicators of human disturbance in a marine-dominated lagoon
… to mankind, it is important to identify key bioindicators that can detect disturbance-induced ecosystem change. Benthic metrics are an excellent example of disturbance indicators in soft sediment based aquatic systems, and are directly applicable to one of South Africa’s most economically and …
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Keanekaragaman makrozoobentos sebagai bioindikator kualitas perairan Ranu Pani - Ranu Regulo Taman Nasional Bromo Tengger Semeru
… know about the macrozoobenthos biodiversity as bioindicator of Ranu Pani-Ranu Regulo watering quality TN.BTS and to know about the watering quality by evaluated the physics and chemical factor. The research was done in TN.BTS at Mei 2011-Juni 2011. This research was quantitative descriptive by …
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Management strategies for control of soybean cyst nematode and their effect on the nematode community
… Additionally, the nematode community is a useful bioindicator for soil health. In chapter 1, relevant research is reviewed. Chapter 2 describes experiments testing ten organic soil amendments at various rates for SCN control in the greenhouse. Some amendments-particularly canola meal, pennycress …
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Keanekaragaman fitoplankton sebagai bioindikator kualitas perairan ranu grati Kabupaten Pasuruan
… Therefore, phytoplankton can be used as a bioindicator of water quality. The purpose of this study to determine the diversity of phytoplankton as bioindicator of water quality and determine water quality views of the physical and chemical factors waters. This study used quantitative …
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Spatial and temporal distribution of butterfly in highland and lowland forests of Johor
… Among insects, butterfly is an important bioindicator of environmental changes. For effective management purposes, a baseline data of butterfly is needed. Samplings were carried out in various forest types: Taman Negara Johor Endau Rompin (TNJER), a lowland forest (30 to 100 m above sea …
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An investigation of land-use impacts on water quality and algal communities in the Nottawasaga River and low-order streams of the Nottawasaga Valley Watershed
… levels, dominated by pollution tolerant bioindicator taxa. Water quality of the low order streams across the NVW was highly variable, with differences in multiple water quality parameters found even when agricultural type was the same. Many of the sites had high concentrations of …
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Hydrogen peroxide-induced genotoxicity and transgenerational implications in sea urchins
… in seawater. Sea urchins were selected as bioindicator species and exposed to environmentally-relevant exposure simulations of pelagic and benthic life stages to H<sub>2</sub>O<sub>2</sub>. Genotoxicological impacts were assessed in adult coelomocytes and tube feet, gametes, and embryos. …
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Bioindicators of Reductive Dechlorination in a Dehalococcoides ethenogenes-Containing Mixed Culture: Transcriptional Trends With Respect to Substrate Type, Substrate Concentration, and Culture Operation
… enzymes were selected for study as potential bioindicators of reductive dechlorination in DET. Quantitative reverse-transcriptase PCR (qRT-PCR) data on selected gene transcripts in batch PCE-fed microcosms indicated that a subset of targets, including RDases TceA, PceA, DET1559 and DET1545, …
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