Kai aulio (84 Ergebnisse)

Paperback. Zustand: New. The Purple loosestrife (Lythrum salicaria) is a controversial plant, regarded both as a Friend and a Foe. In Europe, where the plant is native and commonly found in wetland landscapes, its beautiful purple flowers are admired both in nature and when introduced into gardens. However, in North America, where the plant was introduced by immigrants in the early 1800s, L. salicaria has become a pest, conquering vast areas and displacing native plants.The exceptional success of the newcomer in the New World is primarily attributed to its escape from natural enemies. In the original habitats, the purple loosestrife is controlled and kept in check by plant-eating insects, especially beetles. In America, the alien plant can flourish, and the resources spared from defence are invested in extra growth and reproduction. As a result, the purple loosestrife now occupies all the US states except Florida.Besides the escape of enemies, the purple loosestrife has merits of its own. Hybridization between plants from various origins results in new genomes, enhancing the vitality of the alien.The purple loosestrife tolerates harsh environmental conditions, including dryness and flooding. On the warming planet, the species is one of the beneficiaries of climate change.The newcomer is an undeniable competitive stress factor for native biota. However, the long-term ecological impacts of the purple loosestrife may be relatively minor. In several regions, it has become an established part of wetlands. The abundant riches the flowers provide are a priceless gift for pollinating insects, benefiting agriculture during dry seasons. The purple loosestrife plant is valuable in providing compounds used in medical preparations.Although the purple loosestrife is not an agricultural weed, due to its damage to natural biota, the plant is included in the list of the 100 most deleterious alien organisms in the world. Besides the Americas, the plant has now been established - and is considered a worrisome alien - in Africa and Oceania. …

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Paperback or Softback. Zustand: New. Rantakukka - Yst�v� ja vihollinen: Euroopan kaunottaresta Amerikan hirvi�ksi. Book.

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Paperback or Softback. Zustand: New. Ekoturismi ja el�inten hyvinvointi: Matkailua luonnonsuojelusta el�inr��kk�ykseen. Book.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Scientific Essay from the year 2017 in the subject Tourism, , language: English, abstract: Non-invasive utilization of wildlife is a major incentive for international tourism, but the increase in extraction of natural resources should show more respect to animal rights and welfare. In many destinations, a lion's share of travel decisions is based on the possibility to see wild animals. Problems in erosion and pollution of environment are better understood than the relationships between visiting tourists and the local wildlife. United Nations declared 2017 'The International Year of Sustainable Tourism for Development', and the theme of annual World Environment Day (5 June) was dedicated to sustainable wildlife experiences by the theme 'Connecting People to Nature'. In spite of unanimously accepted emphasis of respect of nature and decades-long education and studies, unpleasant fact is that there are far too many operations going on in so called ecotourism that do not respect nature or animal rights. The preset outlook presents an excerpt from recent studies and news items regarding the close relationships between international tourism industry and managing and conserving nature - as well as problems in the relationship - in the Year of Sustainable Tourism. The present overview briefly describes a few conflicts - and also successful examples - between wildlife and wildlife tourism, published recently, mainly in 2016 and 2017.…

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Scientific Essay from the year 2022 in the subject Biology - Zoology, , language: English, abstract: Attitudes towards acceptance of outdoor living of cats (Felis catus) in man's neighborhoods or in wild nature are deeply divided: On the other hand, free roaming is a natural behavioral characteristic, common in all felines, and on the other hand modern pet cats, often bred to satisfy human desires are regarded as unable to withstand harsh environmental conditions, especially cold weather. Most urban pet cats spend all or most of their time indoors, and in the strictest attitudes, these pets do not survive in low temperatures. In literature, the minimum air temperature in cats' living spaces is sometimes set as low as + 25 degrees centigrade (°C). Demands to keep cats indoors are justified by stating the inner (core) body temperature of cats is 38 - 39 °C, i.e., a couple of degrees higher than in human beings. Cats have, however, several essential characteristics that make outdoor living possible and safe.…

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Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Scientific Essay from the year 2026 in the subject Medicine - Other, , language: English, abstract: Living with a dog is a healthy choice for people. The presence alone of the four-legged companion enhances the quality of life by serving calmness and concentration. The close relationship and gentle stroking of the furry friend increase levels of the well-being hormone oxytocin in the bloodstream of both humans and canines. Necessary outdoor activities, such as walking the dog, positively affect the physical condition of both the dog and its owner. As a real tool to help humans, dogs use their superior sense of smell. Dogs have up to 300 million sensors in their olfactory mechanism, whereas humans have about five million. The sense of smell of dogs is some 100,000 times better than that of people. Dogs are nowadays widely utilised in health care, for the benefit of other dogs and, increasingly, for humans. Guide dogs for the blind have served people for over a century, and these servants are now an everyday sight. Similarly, dogs can be trained to guide and give necessary warning for the deaf or people with poor eyesight. Dogs' extraordinary sense of smell is the principal feature of dogs that guide people with diabetes. The chemical clues in the metabolism of people with diabetes alert the body when blood sugar levels in the bloodstream get too low (Hypoglycemia) or too high (Hyperglycemia). A trained hypo dog can alert the owner in good time before the situation gets dangerous. Similar alerts a dog can give in cases of neurological diseases, such as epilepsy and narcolepsy, as well as for the people who have occasional episodes of migraine and chronic pain. Trained dogs can alert and give a specific signal to their owner, often hours before a seizure occurs. A breakthrough in this sector is the training of dogs capable of detecting the onset of seizures in Parkinson's disease well in advance. In recent years, dogs that have identified human cancerous tumours have received a lot of publicity and sensational headlines. Nowadays, dogs are trained to recognise at least lung, breast, skin, prostate, bladder, ovarian, and cervical cancers. Dogs can also detect carriers of malaria, the deadliest infectious disease in the tropics. Dogs are also proficient at identifying bacteria associated with hospital or urinary tract infections. The latest breakthrough in canine disease diagnostics is the detection of the coronavirus that has become a global pandemic.…

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Paperback. Zustand: New. The Purple loosestrife (Lythrum salicaria) is a controversial plant, regarded both as a Friend and a Foe. In Europe, where the plant is native and commonly found in wetland landscapes, its beautiful purple flowers are admired both in nature and when introduced into gardens. However, in North America, where the plant was introduced by immigrants in the early 1800s, L. salicaria has become a pest, conquering vast areas and displacing native plants.The exceptional success of the newcomer in the New World is primarily attributed to its escape from natural enemies. In the original habitats, the purple loosestrife is controlled and kept in check by plant-eating insects, especially beetles. In America, the alien plant can flourish, and the resources spared from defence are invested in extra growth and reproduction. As a result, the purple loosestrife now occupies all the US states except Florida.Besides the escape of enemies, the purple loosestrife has merits of its own. Hybridization between plants from various origins results in new genomes, enhancing the vitality of the alien.The purple loosestrife tolerates harsh environmental conditions, including dryness and flooding. On the warming planet, the species is one of the beneficiaries of climate change.The newcomer is an undeniable competitive stress factor for native biota. However, the long-term ecological impacts of the purple loosestrife may be relatively minor. In several regions, it has become an established part of wetlands. The abundant riches the flowers provide are a priceless gift for pollinating insects, benefiting agriculture during dry seasons. The purple loosestrife plant is valuable in providing compounds used in medical preparations.Although the purple loosestrife is not an agricultural weed, due to its damage to natural biota, the plant is included in the list of the 100 most deleterious alien organisms in the world. Besides the Americas, the plant has now been established - and is considered a worrisome alien - in Africa and Oceania. …

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Taschenbuch. Zustand: Neu. Strategies in Phragmites australis in a Rapidly Changing River Delta | Kai Aulio | Taschenbuch | 196 S. | Englisch | 2018 | LAP LAMBERT Academic Publishing | EAN 9786138298045 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

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