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Das Geheimnis des goldenen Herbstes

By Guest PostNovember 5, 2017Sciencebernhard kraeutler, chlorophyll, chlorophyll abbau, entgiftungsprozess, geheimnis des herbstes, pflanzenfarbstoff, thomas mueller

Innsbrucker Chemiker um Bernhard Kräutler und Thomas Müller wollen ihr Wissen rund um den Abbau des grünen Pflanzenfarbstoffes Chlorophyll nutzen, um einen neuen Weg zu finden, Krankheiten bei Nutzpflanzen frühzeitig zu erkennen.

Das Farbenspiel der Blätter im Herbst ist ein Naturschauspiel, das die Menschen schon immer fasziniert hat. Es ist ein Phänomen, das beispielsweise mit Hilfe von Satellitenbildern auch aus dem Weltall sichtbar ist. Verantwortlich für dieses alljährlich wiederkehrende Naturschauspiel ist der Abbau von Chlorophyll, dem grünen Pigment in Pflanzen. Ein biologisch wichtiger Grund für den Chlorophyll-Abbau ist eine Art ‚Entgiftungsprozess’. (more…)

Scientists Discover Huge Phytoplankton Bloom in Ice Covered Waters

By Guest PostJune 13, 2012Environmentalaska, aleutian islands, alga phaeocystis, arctic algal boom, arctic circle, arctic summer, arctic waters, beaufort seas, bob pickart, chlorophyll, climate change, continental shelf, ecosystem, emily peacock, healy, heidi sosik, ice free waters, icebreaker, icescape program, imaging flowcytobot, kevin arrigo, magnifying lenses, melt water, microscopic marine plants, NASA, optical measurements, phenomenon, photosynthetic, phytoplankton, polar chukchi, pools of water, rob olson, sam laney, sea ice, skylights, stanford university, thalassiosira, us coast guard, whoi

A team of researchers, including scientists from Woods Hole Oceanographic Institution (WHOI), discovered a massive bloom of phytoplankton beneath ice-covered Arctic waters. Until now, sea ice was thought to block sunlight and limit the growth of microscopic marine plants living under the ice.

The amount of phytoplankton growing in this under-ice bloom was four times greater than the amount found in neighboring ice-free waters. The bloom extended laterally more than 100 kilometers (62 miles) underneath the ice pack, where ocean and ice physics combined to create a phenomenon that scientists had never seen before. (more…)

Practical Tool Can ‘Take Pulse’ of Blue-Green Algae Status in Lakes

By Guest PostJune 12, 2012Environmentalgal blooms, alum creek, beach managers, blue green algae, buck creek, chlorophyll, cyanobacteria, deer creek, delaware, east fork, eutrophic lakes, feedback loop, fluorometer, gastrointestinal illness, jason marion, jiyoung lee, lake logan, lakes, madison lake, neurological problems, nutrient levels, ohio state, ohio state university, organic pollution, oxygen, ph, phycocyanin, phycocyanin levels, pigment, population growth, public health, secchi disk, septic systems, timothy buckley, toxin, toxin microcystin, urbanization, water resources, WHO

COLUMBUS, Ohio – Scientists have designed a screening tool that provides a fast, easy and relatively inexpensive way to predict levels of a specific toxin in lakes that are prone to blue-green algal blooms.

Blue-green algae is not your average pond scum – rather than consisting of plant-like organisms, blue-green algae actually are cyanobacteria, and some species are linked to the production and release of the toxin microcystin into the water. Human exposure to the toxin through drinking or recreational water contact can threaten public health by causing liver damage, neurological problems and gastrointestinal illness in humans. (more…)

Ocean’s Color Affects Hurricane Paths

By Guest PostAugust 14, 20101 commentEnvironmentanand gnanadesikan, biological desert, chlorophyll, color, color of ocean, color-depleted zone, ecosystem, fluid dynamics laboratory, hurricanes, noaa, north pacific, ocean, phytoplankton, phytoplankton population, subtropical gyre

WASHINGTON — A change in the color of ocean waters could have a drastic effect on the prevalence of hurricanes, new research indicates. In a simulation of such a change in one region of the North Pacific, the study finds that hurricane formation decreases by 70 percent. That would be a big drop for a region that accounts for more than half the world’s reported hurricane-force winds.

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Tag Archives: chlorophyll

Das Geheim­nis des golde­nen Herbstes

Scientists Discover Huge Phytoplankton Bloom in Ice Covered Waters

Practical Tool Can ‘Take Pulse’ of Blue-Green Algae Status in Lakes

Ocean’s Color Affects Hurricane Paths

Das Geheimnis des goldenen Herbstes