Sentences with phrase «of algal»

Corals are affected by warming of surface waters (Chapter 6, Box 6.1; Reynaud et al., 2003; McNeil et al., 2004; McWilliams et al., 2005) leading to bleaching (loss of algal symbionts — Chapter 6, Box 6.1).

The nonbanded varieties include boghead coal, which has a high percentage of algal remains, and cannel coal with a high percentage of spores.

Biofilms also influence the structure and functioning of marine benthic communities by promoting or inhibiting the settlement of algal and invertebrate propagules [45 — 47].

To date, renewable hydrocarbon - based fuel substitutes have required the complex, multi-step conversion of algal or other agricultural biomass feedstocks into fuel pre-cursors, and subsequent chemical upgrading.

Due to the high cost and the intermittent nature of algal blooms, water utilities will be unable to solve this problem with the available technology (Environment Canada, 2001).

Effects of algal and terrestrial carbon on methane production rates and methanogen community structure in a temperate lake sediment: Methanogen response to trophic change

Recently, laboratory experiments with live foraminifera have demonstrated that the photosynthetic activity of algal symbionts and the carbonate ion concentration -LRB-[CO32 --RSB--RRB- of seawater also affect shell d18O values.

Instead of ice I see a lot of algal blooms in Isfjorden, the fjord on the southern side of which lies Longyearbyen.

A precursor to the fossil fuel step may be a billion years of algal photosynthesis to build up atmospheric oxygen in which to burn that buried carbon.

For example, a biogeochemical model can be used to show that dumping iron in the oceans will have no effect on atmospheric CO2, as any increase in algal growth will be accompanied by increases in remineralization of algal biomass in the water column.

Use toilets if provided, as human waste in lakes and streams is unhealthy and promotes unnatural levels of algal growth.

Impacts of algal toxins on marine mammals.

Prevalence of algal toxins in Alaskan marine mammals foraging in a changing arctic and subarctic environment.

Green algae (Chlorophyta) is found most commonly in fresh water, but 20 % of these types of algae are marine and the source of most of the algal component of the sands.

Immunostimulatory bioactivity of algal polysaccharides from Chlorella pyrenoidosa activates macrophages via Toll - like receptor 4.

Using soft X-ray tomography, a technique comparable to a computerized tomography scan, scientists imaged and then reconstructed sections of the algal genome to generate a 3 - D view.

Besides primitive plants, the Rhynie Chert has yielded of algal, fungi, and prokaryotic bacteria fossils as well as a diversity of early terrestrial arthropods such as Myriapods (millipedes and centipedes), Collembola, and Arachnids such as Opiliones (harvestmen), pseudoscorpions and the extinct, spider - like trigonotarbids.

The PSA archives contains various mementos and documents collected throughout the history of this algal society.

This new device can detect amazingly small quantities of the algal poison quickly and at low cost.

Production of algal biofuels is a hot topic for research, industry and policy makers.

The study found that in parts of the island where imported palms replaced native trees, the ecosystem unraveled: Seabirds did not nest in the palms and in the absence of algal blooms, the manta rays migrated elsewhere.

To produce 1 liter of algae biofuel, manufacturers must use 3.15 to 3,650 liters of water — or up to 123 billion liters for 39 billion liters of algal fuel.

Researchers think the crustacean is responding to either chemical signals or the touch of an algal cell on its antennae.

In other cases, human activities are involved in the HAB expansion, such as the inadvertent transport of algal species — or their cysts — from one region to another in ballast water.

In nature, nitrogen and phosphate pollution harms aquatic life by spurring the growth of algal blooms.

«Increasing toxicity of algal blooms tied to nutrient enrichment and climate change.»

Excess nutrients are a primary cause of algal blooms, which have a number of impacts, including impairing drinking water quality, robbing aquatic life of needed oxygen and closing beaches to swimming.

«When we confirm the presence of these algal biomarkers in our sediment layers, it allows us to draw conclusions on the depositional environment and the environmental conditions at the respective time,» says Stein.

By looking at the color of the water and other data from tens of thousands of data points, she could determine the timing, intensity and extent of algal blooms.

Heat - stress induced loss of the algal partners from the coral host can result in the often fatal process known as «coral bleaching».

Her team demonstrated the potentially deadly role of an algal toxin in sea lions, shed light on marine mammal cancers and infectious diseases, and has convinced many that marine mammal health is a good indicator of the health of our oceans.

The researchers examined the environmental drivers by season, and found that wind speed affected the spread of algal blooms consistently throughout spring, summer and fall.

Preliminary research hints that ocean acidification may promote some types of algal blooms that make people and animals sick

Researchers can search a directory of algal specialists, browse documents that spell out state, federal, and international research and control efforts, and access references and outside links.

A section on human illnesses describes the five main kinds of algal seafood poisoning, which causes symptoms such as diarrhea and numbness.

A pyrenoid (blue) is seen in a cross-section of an algal cell by false - colored electron microscopy.

These outbursts of algal exuberance sometimes have a dark side: Algal toxins have been blamed for everything from fish kills in North Carolina to a manatee massacre in Florida to the 1987 deaths of four Canadians who consumed tainted mussels.

In order to advance the production of algal biofuels into a large - scale, competitive scenario, it is fundamental that the biological processes in these organisms are well understood.»

Additionally, the techno - economic challenges and environmental impacts of algae - to - fuel strategies need to be properly assessed (comprehensive impact assessments are lacking) before implementing systems integration strategies leading to the deployment of the algal biofuels industry.

Economically sustainable production requires that all components of the algal biomass need are used.

The authors find that the main barriers to large - scale deployment of both macro - and micro-algae, include high demands of key resources for algal growth (such as nutrients, water and CO ₂), difficulty in maintaining selected species with high productivity content in outdoor culture, as well as high energy requirements and costs of algal production and conversion into biofuels.

Mats of algal «turf», which create fewer distinct niches, had moved in instead (Nature Climate Change, DOI: 10.1038 / nclimate1627).

The state held the summit as an effort to address the growing problem of algal blooms on New York Waterways.

At 11 a.m., Toxics Targeting Inc. holds a news conference releasing photos of algal blooms threatening the sources of public drinking water for residents of Syracuse, Auburn, Rochester, Ithaca and other communities across New York, state Capitol, third floor, adjoining to the LCA Press Room, Albany.

A supplement called life «sDHA (TM) is a sustainable and vegetarian source of algal DHA omega 3.

The Commonwealth Environmental Water Holder is investigating whether there are opportunities to use the limited volumes of environmental water available to provide refuge habitat for aquatic species (particularly if the decay of the algal bloom leads to low oxygen levels in the waterways).

They started by adding carbon to Lake 227 which disproved the detergent industry's theory on the origin of algal blooms.

Not exact matches

Recent ELA research on the importance of nitrogen pollution in producing algal blooms could save billions of dollars in clean - up costs.

The ideal algal strain flourishes in the simplest of production environments at the lowest possible cost without a necessary dependence on fossil fuels to maintain high yields — an affordable approach that can be practiced most anywhere.

Andrew A. Dahl is president and CEO of Zivo Bioscience, which is dedicated to the development and commercialization of nutritional compounds and bioactive molecules derived from proprietary algal strains.