ALGE ALGE ALGE: Liniertes Notizbuch & Journal | 6"x 9" 15x23cm Seitengröße | Mit Seiten für deine Notizen | Design, ALGE | ISBN: Alge Alge Alge. Die offizielle Algen Crew werde auch du ein Teil von uns @knossi bandbtaos.com Twitter:@AlgenCrew bandbtaos.com. Seit unterstützen und begleiten wir Unternehmen und Führungskräfte auf dem Weg zum nachhaltigen Erfolg. Wir arbeiten praxisnah und lösungsorientiert.
ALGE ALGE ALGE TürhängerAlge Alge Alge. Die offizielle Algen Crew werde auch du ein Teil von uns @knossi bandbtaos.com Twitter:@AlgenCrew bandbtaos.com. Alge. DAS GETRÄNK ZUM SONG. Algenschnaps. KNOSSI MIX. SÜßIGKEITEN Alge mix. Der Süßigkeiten mix vom König Empfohlen. Alge Mix. Knossi Kasino. ALGE ALGE ALGE Türhänger Gratisartikel online kaufen bei Warner ✩ Riesige Produkt-Auswahl ✓ Kauf auf Rechnung ➤ Jetzt zugreifen.
Alge Alge Alge Navigacijski meni VideoAlge Există alge monocelulare (clorela, claminominada ș. a.) și alge pluricelulare (oscilatoria, ulotriscul, laminaria ș. a.). Dimensiunile lor variază de la miimi de milimetru la zeci de metri. Componența chimică a corpului algelor este în funcție de bazinul de apă (mare, râu, lac, iaz) în care cresc. De regulă, algele populează grosul apei, se dezvoltă pe fundul bazinelor sau pe. Algele (lat. Algae - „iarbă de mare”) constituie un grup diversificat din Regnul Chromista, Regnul Plante dar și unele organisme din Regnul Monera Cuprins 1 Caracteristicile generale ale algelor. Algae are simple plants that can range from the microscopic (microalgae), to large seaweeds (macroalgae), such as giant kelp more than one hundred feet in length. Microalgae include both cyanobacteria, (similar to bacteria, and formerly called “blue-green algae”) as well as green, brown and red algae. For other uses, see Algae disambiguation. Ewa Brodnicka new research Rätsel Online Lösen to establish why longfins, who usually fiercely defend their algae from all living things, will tolerate swarms of mysid shrimp floating over their yards. Morning Edition. Morocco [ edit ] Gayral, Paulette Handbook of the protists. König KNOSSI hat gesprochen und wir sind gefolgt. Endlich ist er da! Der Algenschnaps vom offiziellen Musikvideo ALGE von KNOSSI! Jetzt online kaufen! ALGE ALGE ALGE Türhänger Gratisartikel online kaufen bei Warner ✩ Riesige Produkt-Auswahl ✓ Kauf auf Rechnung ➤ Jetzt zugreifen. ALGE ALGE ALGE: Liniertes Notizbuch & Journal | 6"x 9" 15x23cm Seitengröße | Mit Seiten für deine Notizen | Design, ALGE | ISBN: Alge. DAS GETRÄNK ZUM SONG. Algenschnaps. KNOSSI MIX. SÜßIGKEITEN Alge mix. Der Süßigkeiten mix vom König Empfohlen. Alge Mix. Knossi Kasino.
In three lines, even higher levels of organization have been reached, with full tissue differentiation. The innovation that defines these nonalgal plants is the presence of female reproductive organs with protective cell layers that protect the zygote and developing embryo.
Hence, the land plants are referred to as the Embryophytes. Many algae, particularly members of the Characeae species,  have served as model experimental organisms to understand the mechanisms of the water permeability of membranes, osmoregulation , turgor regulation , salt tolerance , cytoplasmic streaming , and the generation of action potentials.
Phytohormones are found not only in higher plants, but in algae, too. Some species of algae form symbiotic relationships with other organisms. In these symbioses, the algae supply photosynthates organic substances to the host organism providing protection to the algal cells.
The host organism derives some or all of its energy requirements from the algae. Examples are:. Lichens are defined by the International Association for Lichenology to be "an association of a fungus and a photosynthetic symbiont resulting in a stable vegetative body having a specific structure".
In nature they do not occur separate from lichens. It is unknown when they began to associate. A photobiont may be associated with many different mycobionts or may live independently; accordingly, lichens are named and classified as fungal species.
The photobiont possibly triggers otherwise latent genes in the mycobiont. Trentepohlia is an example of a common green alga genus worldwide that can grow on its own or be lichenised.
Lichen thus share some of the habitat and often similar appearance with specialized species of algae aerophytes growing on exposed surfaces such as tree trunks and rocks and sometimes discoloring them.
Coral reefs are accumulated from the calcareous exoskeletons of marine invertebrates of the order Scleractinia stony corals. These animals metabolize sugar and oxygen to obtain energy for their cell-building processes, including secretion of the exoskeleton, with water and carbon dioxide as byproducts.
Dinoflagellates algal protists are often endosymbionts in the cells of the coral-forming marine invertebrates, where they accelerate host-cell metabolism by generating sugar and oxygen immediately available through photosynthesis using incident light and the carbon dioxide produced by the host.
Reef-building stony corals hermatypic corals require endosymbiotic algae from the genus Symbiodinium to be in a healthy condition. Endosymbiontic green algae live close to the surface of some sponges, for example, breadcrumb sponges Halichondria panicea.
Rhodophyta , Chlorophyta , and Heterokontophyta , the three main algal divisions , have lifecycles which show considerable variation and complexity.
In general, an asexual phase exists where the seaweed's cells are diploid , a sexual phase where the cells are haploid , followed by fusion of the male and female gametes.
Asexual reproduction permits efficient population increases, but less variation is possible. Commonly, in sexual reproduction of unicellular and colonial algae, two specialized, sexually compatible, haploid gametes make physical contact and fuse to form a zygote.
To ensure a successful mating, the development and release of gametes is highly synchronized and regulated; pheromones may play a key role in these processes.
The Algal Collection of the US National Herbarium located in the National Museum of Natural History consists of approximately , dried specimens, which, although not exhaustive no exhaustive collection exists , gives an idea of the order of magnitude of the number of algal species that number remains unknown.
Another checklist reports only about 5, species. Regarding the difference of about 15, species, the text concludes: "It will require many detailed field surveys before it is possible to provide a reliable estimate of the total number of species Most estimates also omit microscopic algae, such as phytoplankton.
The most recent estimate suggests 72, algal species worldwide. The distribution of algal species has been fairly well studied since the founding of phytogeography in the midth century.
This dispersal can be accomplished by air, water, or other organisms. Due to this, spores can be found in a variety of environments: fresh and marine waters, air, soil, and in or on other organisms.
The spores of freshwater algae are dispersed mainly by running water and wind, as well as by living carriers. Ocean water presents many vastly different habitats based on temperature and nutrient availability, resulting in phytogeographic zones, regions, and provinces.
To some degree, the distribution of algae is subject to floristic discontinuities caused by geographical features, such as Antarctica , long distances of ocean or general land masses.
It is, therefore, possible to identify species occurring by locality, such as "Pacific algae" or "North Sea algae". When they occur out of their localities, hypothesizing a transport mechanism is usually possible, such as the hulls of ships.
For example, Ulva reticulata and U. Mapping is possible for select species only: "there are many valid examples of confined distribution patterns.
Algae are prominent in bodies of water, common in terrestrial environments, and are found in unusual environments, such as on snow and ice.
The various sorts of algae play significant roles in aquatic ecology. Microscopic forms that live suspended in the water column phytoplankton provide the food base for most marine food chains.
In very high densities algal blooms , these algae may discolor the water and outcompete, poison, or asphyxiate other life forms.
Algae can be used as indicator organisms to monitor pollution in various aquatic systems. Due to this, the species composition of algal populations may shift in the presence of chemical pollutants.
On the basis of their habitat, algae can be categorized as: aquatic planktonic , benthic , marine , freshwater , lentic , lotic ,  terrestrial , aerial subaerial ,  lithophytic , halophytic or euryhaline , psammon , thermophilic , cryophilic , epibiont epiphytic , epizoic , endosymbiont endophytic , endozoic , parasitic , calcifilic or lichenic phycobiont.
Agar , a gelatinous substance derived from red algae, has a number of commercial uses. Alginic acid, or alginate, is extracted from brown algae.
Its uses range from gelling agents in food, to medical dressings. Alginic acid also has been used in the field of biotechnology as a biocompatible medium for cell encapsulation and cell immobilization.
Molecular cuisine is also a user of the substance for its gelling properties, by which it becomes a delivery vehicle for flavours.
Between , and , wet tons of Macrocystis are harvested annually in New Mexico for alginate extraction and abalone feed. To be competitive and independent from fluctuating support from local policy on the long run, biofuels should equal or beat the cost level of fossil fuels.
Here, algae-based fuels hold great promise,   directly related to the potential to produce more biomass per unit area in a year than any other form of biomass.
The break-even point for algae-based biofuels is estimated to occur by For centuries, seaweed has been used as a fertilizer; George Owen of Henllys writing in the 16th century referring to drift weed in South Wales : .
This kind of ore they often gather and lay on great heapes, where it heteth and rotteth, and will have a strong and loathsome smell; when being so rotten they cast on the land, as they do their muck, and thereof springeth good corn, especially barley After spring-tydes or great rigs of the sea, they fetch it in sacks on horse backes, and carie the same three, four, or five miles, and cast it on the lande, which doth very much better the ground for corn and grass.
Today, algae are used by humans in many ways; for example, as fertilizers , soil conditioners , and livestock feed.
Algaculture on a large scale is an important type of aquaculture in some places. Maerl is commonly used as a soil conditioner. Naturally growing seaweeds are an important source of food, especially in Asia.
They provide many vitamins including: A, B 1 , B 2 , B 6 , niacin , and C , and are rich in iodine , potassium , iron, magnesium , and calcium.
Algae are national foods of many nations: China consumes more than 70 species, including fat choy , a cyanobacterium considered a vegetable; Japan, over 20 species such as nori and aonori ;  Ireland, dulse ; Chile , cochayuyo.
Sea lettuce and badderlocks are salad ingredients in Scotland , Ireland, Greenland , and Iceland. Algae is being considered a potential solution for world hunger problem.
The oils from some algae have high levels of unsaturated fatty acids. Fish oil contains the omega-3 fatty acids, but the original source is algae microalgae in particular , which are eaten by marine life such as copepods and are passed up the food chain.
Scientists developed the ATS, which consists of shallow, foot raceways of nylon netting where algae colonies can form, and studied its efficacy for three years.
They found that algae can readily be used to reduce the nutrient runoff from agricultural fields and increase the quality of water flowing into rivers, streams, and oceans.
Researchers collected and dried the nutrient-rich algae from the ATS and studied its potential as an organic fertilizer.
They found that cucumber and corn seedlings grew just as well using ATS organic fertilizer as they did with commercial fertilizers.
Various polymers can be created from algae, which can be especially useful in the creation of bioplastics.
These include hybrid plastics, cellulose based plastics, poly-lactic acid, and bio-polyethylene. The alga Stichococcus bacillaris has been seen to colonize silicone resins used at archaeological sites; biodegrading the synthetic substance.
The natural pigments carotenoids and chlorophylls produced by algae can be used as alternatives to chemical dyes and coloring agents. Carrageenan, from the red alga Chondrus crispus , is used as a stabilizer in milk products.
From Wikipedia, the free encyclopedia. For places called Alga, see Alga disambiguation. For other uses, see Algae disambiguation. Diverse group of photosynthetic eukaryotic organisms.
An informal term for a diverse group of photosynthetic eukaryotes. Temporal range: Mesoproterozoic—present . Further information: wikispecies:Algae.
Main article: Lichen. Main articles: Coral , Coral reef , and Symbiodinium. Main article: Sea sponge. Further information: Conceptacle.
Further information: Seaweed fertiliser. See also: Edible seaweed and Algae powder. Main articles: Carrageenan and Chondrus crispus.
Archived from the original on 7 March Cambridge University Press. Introduction to Botany. San Francisco: Pearson Education, Inc. The Concise Dictionary of Botany.
Oxford University Press. American Journal of Botany. Archived from the original on 27 February Archived from the original on 2 July Retrieved 25 August Archaeplastida includes plants and a variety of photosynthetic algal species such as the chlorophytes a subset of green algae , charophytes mainly freshwater green algae and glaucocystophytes unicellular freshwater algae.
Chlorophytes are the green algae that commonly form lichen partnerships with fungi. Dinoflagellates are found within Alveolata.
These are primarily unicellular marine and freshwater organisms. Many dinoflagellates have lost their plastids — the site of photosynthesis — through the course of evolution and are phagotropic or live as parasites.
Still other algal species are found distributed amongst Alveolata, Excavata, Rhizaria and Chromista Current Biology, Probably the most important contribution of algae to our environment and well-being is the generation of oxygen through photosynthesis.
According to a review article published in the journal Biofuels, petroleum is partially derived from ancient algae deposits. As a result, researchers are looking into renewable alternatives.
Algal biofuels are a promising replacement for fossil fuels. All algae have the ability to produce energy-rich oils and several microalgal species naturally accumulate high levels of oil in their dry mass.
Moreover, algae are found in diverse habitats and can reproduce quickly. They also efficiently use carbon dioxide. Green algae, diatoms and cyanobacteria are just some of the microalgal species that are considered good candidates for the production of biofuel Biofuels, Algae, in the form of algal blooms , get a bad rap for creating toxic conditions in oceans and lakes.
The blooms take on the colors of the algae contained within them. Graham states that the main toxin producers in oceans are certain dinoflagellates and diatoms.
In freshwaters, cyanobacteria are the main toxin producers, though some eukaryotic algae also cause problems. Under natural conditions, Graham notes that algae use the toxins to protect themselves from being eaten by small animals and only need a small amount to protect themselves.
The main cause of algal blooms is a phenomenon called nutrient pollution. Additionally, the algae as treated in this article exclude the prokaryotic nucleus-lacking blue-green algae cyanobacteria.
Beginning in the s, algae were classified into major groups based on colour—e. The colours are a reflection of different chloroplast pigments, such as chlorophylls , carotenoids , and phycobiliproteins.
Many more than three groups of pigments are recognized, and each class of algae shares a common set of pigment types distinct from those of all other groups.
The algae are not closely related in an evolutionary sense, and the phylogeny of the group remains to be delineated.
Specific groups of algae share features with protozoa and fungi that, without the presence of chloroplasts and photosynthesis as delimiting features, make them difficult to distinguish from those organisms.
Indeed, some algae appear to have a closer evolutionary relationship with the protozoa or fungi than they do with other algae.
This article discusses the algae in terms of their morphology , ecology, and evolutionary features. For a discussion of the related protists, see the articles protozoan and protist.
For a more complete discussion of photosynthesis, see the articles photosynthesis and plant. Algae are very diverse and found almost everywhere on the planet.
They play an important role in many ecosystems, including providing the foundation for the aquatic food chains supporting all fisheries in the oceans and inland, as well as producing about 70 percent of all the air we breathe.
Take our fun — and short — quiz to see how much you know about algae.