Environmental variability and the initiation of dispersal: turbulence strongly increases seed release. (1/10)
Dispersal is a critical process in ecology. It is an important biological driver of, for example, invasions, metapopulation dynamics, spatial pattern formation and pathogen movement. Much is known about the effect of environmental variability, including turbulence, on dispersal of diaspores. Here, we document experimentally the strong but under-explored influence of turbulence on the initiation of dispersal. Flower heads of two thistle species (Carduus nutans and Carduus acanthoides) with ripe seeds were exposed to series of laminar and turbulent air flows of increasing velocity in a wind tunnel. Seed release increased with wind speeds for both laminar and turbulent flows for both species. However, far more seeds were released, at significantly lower wind speeds, during turbulent flows. These results strongly suggest a need for more quantitative studies of abscission in the field, as well as dispersal models that incorporate variability in the diaspore release phase. (+info)Seed release by invasive thistles: the impact of plant and environmental factors. (2/10)
Dispersal is a key process in biological studies of spatial dynamics, but the initiation of dispersal has often been neglected, despite strong indications that differential timing of dispersal can significantly affect dispersal distances. To investigate which plant and environmental factors determine the release of plumed seeds by the invasive thistles Carduus acanthoides and Carduus nutans, we exposed 192 flower heads of each species to increasing wind speeds in a full-factorial wind tunnel experiment with four air flow turbulence, three flower head wetness and two flower head temperature levels. The number of seed releases was highest under dry and turbulent conditions and from heads that had already lost a considerable number of seeds, but was not affected by flower head size, head angle or temperature. Inspection of the trials on video showed that higher wind speeds were needed to meet the seed release threshold in laminar flows and for C. acanthoides heads that had been wet for a longer time. Species differences were minimal, although seed release was more sensitive to lower levels of turbulence in the larger-headed and more open C. nutans heads. Knowledge of seed release biases towards weather conditions favourable for long-distance dispersal improves our understanding of the spread of invaders and allows managers to increase the efficiency of their containment strategies by applying them at crucial times. (+info)Leaf-cutting ant nests near roads increase fitness of exotic plant species in natural protected areas. (3/10)
(+info)Evolution of flowering decisions in a stochastic, density-dependent environment. (4/10)
(+info)Counting pollen grains using readily available, free image processing and analysis software. (5/10)
(+info)Integrating multiple disturbance aspects: management of an invasive thistle, Carduus nutans. (6/10)
(+info)Bottom-up effects may not reach the top: the influence of ant-aphid interactions on the spread of soil disturbances through trophic chains. (7/10)
(+info)Protection of apigenin against kainate-induced excitotoxicity by anti-oxidative effects. (8/10)
Apigenin (5,7,4'-trihydroxyflavone) is a principal ingredient of Cirsium japonicum. These experiments were performed to determine whether apigenin has neuroprotective effects against kainic acid (KA)-induced excitotoxicity in vitro and in vivo. Intraperitoneal (i.p.) administration of apigenin (25, 50 mg/kg) decreased the seizure scores induced by KA injection (40 mg/kg, i.p.) in mice. In addition, the convulsion onset time was significantly delayed by apigenin administration. Moreover, we found that apigenin blocked KA-induced seizure-form electroencephalogram (EEG) discharge activity in the brain cortex. In hippocampal cells, apigenin inhibited KA-induced excitotoxicity in a dose-dependent manner as measured by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. To study the possible mechanisms underlying the in vitro neuroprotective effects of apigenin against KA-induced cytotoxicity, we also examined the effect of apigenin on intracellular reactive oxygen species (ROS) elevations in cultured hippocampal neurons and found that apigenin treatment dose-dependently inhibited intracellular ROS elevation. The remarkable reduction of glutathione (GSH) levels induced by KA in hippocampal tissues was reversed by apigenin in a dose-dependent manner. In addition, similar results were obtained after pretreatment with free radical scavengers such as trolox and dimethylthiourea (DMTU). Finally, after confirming the protective effect of apigenin in hippocampal CA3 region, we found apigenin is an active compound in KA-induced neuroprotection. These results collectively indicate that apigenin alleviates KA-induced excitotoxicity by quenching ROS as well as inhibiting GSH depletion in hippocampal neurons. (+info)"Carduus" is a genus of plants commonly known as thistles, which belong to the family Asteraceae. There are many different species within this genus, and they are native to Europe, Asia, and North Africa. Some of these species have been introduced to other parts of the world, including North America, where they can be invasive and cause problems for native plants and animals.
The name "Carduus" comes from the Latin word for "thistle." These plants are often characterized by their prickly leaves and stems, as well as their distinctive purple or pink flower heads. Some species of Carduus have medicinal properties and have been used in traditional medicine to treat a variety of ailments, including digestive problems and skin conditions. However, it is important to note that the use of these plants for medicinal purposes should be done under the guidance of a qualified healthcare professional, as they can also have toxic effects if not used properly.
Carduus
Carduus tenuiflorus
Carduus crispus
Carduus personata
Carduus pycnocephalus
Acanthotrophon carduus
Arothron carduus
Carduus nutans
Carduus argentatus
Carduus acanthoides
Acropora carduus
Carduus arabicus
Cardus
Agapanthia cardui
Schinia cardui
Brachycaudus cardui
Urophora cardui
Lixus cardui
Cardus crucifer
Tingis cardui
Cardus (surname)
Vanessa cardui
Ana Cardus
Pegomya carduorum
Neville Cardus
Cardus Education Survey Canada
Pewsey Downs
Flora of Malta
Colias croceus
Cirsium eriophorum
Carduus - Wikipedia
Mike Cardus presentations | SlideShare
Geoff Otten | Cardus
André Schutten | Cardus
Device Connection Card UI (click the gear)
Carduus acanthoides ssp. acanthoides Calflora
cardus Archives - Stephen Taylor
Parked Car DUI | Cowan Kirk
Electronic Gift Card - UI Stencils
What To Do If You Lost Your Green Card - US Immigration News
Toyota says new Prius, fuel cell car due in 2015
Urophora cardui photo - image 105250
Nahuby.sk - Fotografia - symbióza v prírode Carduus nutans L.
DailyMed - HEPASTAT- beta vulgaris, carduus marianus, taraxacum officinale, cholesterinum, fel tauri, chelidonium majus,...
New Book by Association of Christian Schools International and Cardus Reveals Roadmap to Financial Sustainability for Christian...
New Book by Association of Christian Schools International and Cardus Reveals Roadmap to Financial Sustainability for Christian...
Vanessa cardui (Insecta: Lepidoptera: Nymphalidae)
Nodding Plumeless-Thistle (Carduus nutans) Species Details and Allergy Info, Chickasaw county, Mississippi
Texas St. Celebrates Winning Sun Belt With Interim Coach In His Car Due To Covid Protocols
Increasing number of consumers considering managing without a car due to cost | News | Forecourt Trader
Oliveira and Cardus take on newly-resurfaced Le Mans - Ajo Motorsport
Photo: Carduus nutans 5. | Henriette's Herbal Homepage
Milk Thistle / Cardus Marianus (Silybum marianum) organic - bulk quantity (10 g) | The Beautiful | European wild plants |...
Fullscript | Carduus Plex
Fianna Fail senator sleeps in car due to lack of Dublin hotel rooms - Dublin Live
Europa Point Refurbishment | Carduus
Acropora Carduus - Reef Casa
Carduus acanthoides L. - idseed
Marianus1
- No side effects of Carduus marianus Pentarkan (WSI) are known. (thehomoeopathystore.com)
Asteraceae1
- Carduus is a genus of flowering plants in the family Asteraceae, and the tribe Cardueae, one of two genera considered to be true thistles, the other being Cirsium. (wikipedia.org)
Nutans6
- The musk thistle rust (Puccinia carduorum), a fungus, may also be used against C. nutans. (wikipedia.org)
- Carduus acanthoides Carduus nutans Carduus personata Carduus keniensis There are about 90 to 127 species in the genus. (wikipedia.org)
- symbióza v prírode Carduus nutans L. (nahuby.sk)
- Carduus nutans L. (nahuby.sk)
- Nodding Plumeless-Thistle (Carduus nutans) is a mild allergen. (pollenlibrary.com)
- Photo: Carduus nutans 5. (henriettes-herb.com)
Vanessa2
Acanthoides2
- Carduus acanthoides ssp. (calflora.org)
- The achenes of Carduus acanthoides look similar to other Carduus species, they are distinguished by the light grey colour, wrinkled surface, and the grey, pink or brown narrow end. (idseed.org)
Genus Carduus1
- Genus Carduus. (wikipedia.org)
Thistle1
- Agents of biological pest control that have been used against weedy Carduus thistles include the thistle head weevil (Rhinocyllus conicus), thistle crown weevil (Trichosirocalus horridus), and thistle crown fly (Cheilosia corydon). (wikipedia.org)
Tenuiflorus3
- Specimen records of Carduus tenuiflorus in the Consortium of Pacific Northwest Herbaria database. (burkeherbarium.org)
- Carduus tenuiflorus checklist entry. (burkeherbarium.org)
- Carduus tenuiflorus atlas page. (burkeherbarium.org)
Cirsium1
- 2003). Chemistry of Cirsium and Carduus: a role in ecological risk assessment for biological control of weeds? (wikipedia.org)
Thistles1
- 2006. Carduus (a genus of thistles). (wikipedia.org)
Website1
- The party responsible for processing data on this website is: Mira Cardui Postfach 950301 81519 Munich Germany Phone : +49 170 16 16 969 Email address : [email protected] The responsible party is the natural or legal person who alone or jointly with others decides on the purposes and means of processing personal data (names, email addresses, etc. (miracardui.com)
English1
- Holdings: English cricket / by N. Cardus. (lboro.ac.uk)
Native1
- Several Carduus are notorious invasive plants outside their native range, for example, in Australia and the United States. (wikipedia.org)
Years1
- He came to Cardus after four years of full-time study in theology. (cardus.ca)
Book1
- Colorado Springs, Colo.- The Association of Christian Schools International (ACSI) and Cardus have partnered to release a timely new book sharing research on how Christian schools are adapting to and embracing change as they advance the mission of Christian education. (acsi.org)
Original1
- with introduction by Michael Parkinson and original foreword by Neville Cardus. (lboro.ac.uk)
MARIANUS4
- Cardus marianus, also called milk thistle or Marian thistle, is a tonic for the body, ideal during periods of stress , it is also able to stimulate the appetite and is a remedy against weakness and tiredness , fever and illnesses of the liver such as cirrhosis, hepatitis or other problems caused by excess of alcohol and medicines, because cardus marianus can purify and protect this gland. (naturallifeapp.com)
- Finally, cardus marianus results very useful in order to treat allergies , rash, hay fever, sea sickness and car sickness . (naturallifeapp.com)
- If you suffer from high blood pressure it is better to avoid to eat cardus marianus, because it contains a molecule, the tyramine, able to increase the blood pressure. (naturallifeapp.com)
- In order to stimulate the appetite, against the liver illnesses and circulatory disorders leave to brew one leaf and a root of cardus marianus in a liter of water for 10 minutes, strain and drink from two to three cups a day. (naturallifeapp.com)
Genus2
- Genus Carduus. (wikipedia.org)
- 2006. Carduus (a genus of thistles). (wikipedia.org)
20221
- Cardus, 2022. (cardus.ca)
19471
- Neville Cardus, on devising cultural self-improvement scheme, in Autobiography (1947): "'I came upon the works of J. M. (dal.ca)
Read3
- Read more about Carduus at Vascular Plants of North Carolina . (namethatplant.net)
- At age sixteen, Neville Cardus (whose parents were launderers in turn of the century Manchester) read in the Athenaeu. (dal.ca)
- Neville] Cardus read only boys' papers until quite suddenly, in adolescence, he dove into Dickens and Mark Twain. (dal.ca)
Result1
- When I googled Wine of Cardui for Women, the first result pulled up a site called The Quack Doctor . (fuzzygalore.com)