نتایج جستجو برای: blooms taxonomy
تعداد نتایج: 33886 فیلتر نتایج به سال:
Toxic cyanobacterial blooms can strongly affect freshwater food web structures. However, little is known about how the patchy occurrence of blooms within systems affects the spatial distribution of zooplankton communities. We studied this by analysing zooplankton community structures in comparison with the spatially distinct distribution of a toxic Microcystis bloom in a small, shallow, eutroph...
The large bloom-forming flagellate Gonyostomum semen has been hypothesized to be inedible to naturally occurring zooplankton due to its large cell size and ejection of long slimy threads (trichocysts) induced by physical stimulation. In a grazing experiment using radiolabelled algae and zooplankton collected from lakes with recurring blooms of G. semen and lakes that rarely experience blooms, w...
Reports of toxic harmful algal blooms (HABs) attributed to the diatom Pseudo-nitzschia spp. have been increasing in California during the last several decades. Whether this increase can be attributed to enhanced awareness and monitoring or to a dramatic upswing in the development of HAB events remains unresolved. Given these uncertainties, the ability to accurately and rapidly identify an emerg...
Cyanobacteria are prokaryotic, plantlike organisms present in lakes, recreational waters, and reservoirs, and often dominate phytoplankton communities in warm, nutrient-enriched hard waters. A stable water column rich in certain nutrients, especially nitrogen and phosphorus, is associated with favorable environmental conditions that support development of cyanobacterial population maxima or "bl...
The Linked Open Data (LOD) is a major milestone towards realizing the Semantic Web vision, and can enable applications such as robust Question Answering (QA) systems that can answer queries requiring multiple, disparate information sources. However, realizing these applications requires relationships at both the schema and instance level, but currently the LOD only provides relationships for th...
Satellite images are an effective tool for the detection of phytoplankton blooms, since they cause striking changes in water color. Bloom intensity can be expressed in terms of chlorophyll-a concentration. Previous studies suggest the use of Landsat TM4/TM3 reflectance ratio to retrieve surface chlorophyll-a concentration from aquatic systems. In this study we assumed that a remote sensing trop...
Links: [1] https://www.buppractice.com/node/173 [2] http://www.drugpolicy.org/docUploads/buprenorphine_themedicalletter.pdf [3] https://www.buppractice.com/taxonomy/term/105 [4] https://www.buppractice.com/taxonomy/term/112 [5] https://www.buppractice.com/taxonomy/term/47 [6] https://www.buppractice.com/taxonomy/term/54 [7] https://www.buppractice.com/taxonomy/term/64 [8] https://www.buppractic...
Links: [1] https://www.opioidrisk.com/node/12 [2] https://www.ncbi.nlm.nih.gov/pubmed/18497713 [3] https://www.opioidrisk.com/taxonomy/term/475 [4] https://www.opioidrisk.com/taxonomy/term/574 [5] https://www.opioidrisk.com/taxonomy/term/616 [6] https://www.opioidrisk.com/taxonomy/term/548 [7] https://www.opioidrisk.com/taxonomy/term/488 [8] https://www.opioidrisk.com/taxonomy/term/338 [9] http...
The spatial and temporal variability of phytoplankton blooms was investigated in two tropical coastal regions of northern Australia using the MEdium Resolution Imaging Spectrometer (MERIS) full mission (2002–2012) reduced resolution dataset. Satellite-derived proxies for phytoplankton (Chlorophyll-a (Chl), Fluorescence Line Height (FLH), Maximum Chlorophyll Index (MCI)) and suspended sediment (...
The availability of iron within the surface waters of the broad, oligotrophic West Florida Shelf (WFS) controls periodic blooms of the pelagic marine cyanobacterium Trichodesmium. Summer delivery of Saharan dust provided adequate iron (Fe) to shift limitation of growth to the availability of phosphorus (P). Florida’s rivers drain Miocene phosphorus deposits to provide the WFS with freshwater nu...
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