Artikelname: Animals of Sandy Shores
Artikelbeschreibung: This book looks at the factors influencing sandy shores and how animals coping with living in this environment. There are keys for identifying the main animals found and techniques for studying them to discover more about their populations, distribution, predation and competition
Artikelname: Animals of the Surface Film
Artikelbeschreibung: A calm water surface on any aquatic habitat can support a community of animals and plants of great interest. Because similar constraints apply to all surface waters, members of the same groups of organisms may be found in like habitats in many parts of the world, even though the land surrounding them may be very different. Surface dwelling communities may be found on most bodies of water, including small tarns and ponds, lakes, the still backwaters of rivers and even the brackish tidal pools of estuaries and saltmarshes. Protection from wind and waves by banks and vegetation produce areas of calm water where communities develop. They are destroyed by vigorous wave action or a strong current. The members of these communities, small organisms living immediately below the surface and insects moving over it, can be observed and collected very easily from the banks. Although suitable habitats are common and widespread, the biology of communities living at the surface remains largely unexplored.
Artikelname: Animals on Seaweed
Artikelbeschreibung:
Diverse and complex animal communities exploit the immense biological resource and microhabitats that are provided by the seaweed belt along the shores of Britain. The book splits these animals up into herbivores and detritivores, filter feeders, fauna of kelp holdfasts, and predators.
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Artikelname: Animals Under Logs and Stones
Artikelbeschreibung: Logs and stones provide an interesting interface between damp soil and dry open air. The animals that live there cover a wide range of groups and have equally wide ranging ways of coping with the environment in which they have chosen to live. These animals have been termed 'cryptozoa' ('hidden' animals). This book does not cover animals found on the sea shore or in very wet places.
Artikelname: Ants
Artikelbeschreibung: Ants and their intricate interactions with plants and other insects make an exciting subject for investigation. 'Ants' will give you practical guidance, whether you're an amateur or professional naturalist.
Artikelname: Aphid Predators
Artikelbeschreibung: An aphid colony is the scene of a lively drama, that runs day and night. A range of insects come to eat or parasitise the aphids or to drink their honeydew. Other Naturalists' Handbooks deal with the natural history of two major groups of aphid predators, hoverflies and ladybirds. This book complements them by focussing on the behavioural interactions among these and other visitors to a colony of aphids, interactions that offer limitless opportunities for observation and experimental investigation.
Artikelname: Aphids on Decidous Trees
Artikelbeschreibung: Pictorial Card Covers 6 x 9 inches tall.Lavishly llustrated with Colour photos and B&W line drawings throughout.
Aphids are tempting subjects for investigation because they are often abundant, easily found, and unlikely to run away, and because of intriguing facets of their biology such as polyphenism, parthenogenesis, gall formation and the production of a soldier morpho. However, until now identification has presented a severe challenge to the beginner, because there are so many rather similar species, many of which have several different forms. We have long wanted a Naturalists' Handbook that would make the study of aphids more accessible to those unfamiliar with the group. We are delighted that Tony Dixon and Thomas Thieme have met this challenge.By confining themselves to aphids living on broad-leaved trees, they have reduced problems of identification to manageable proportions, and we hope this book will encourage more field studies of this important and ubiquitous group of insects.The coloured illustrations in the other books in this series are all paintings. At the authors' suggestion, we have departed from that tradition for this title, and we feel that these excellent colour photographs, showing both the aphids and their effects on the host plants, will be a superb aid to identification.
Artikelname: Blowflies
Artikelbeschreibung: Blowflies are very common and well known insects which most of us recognise as bluebottles and greenbottles. They are easy to keep in captivity and are therefore an ideal group to study. They are the subject of much research due to the parasitic nature of their larvae and their possible benefits to forensic scientists when determining time of death of corpses.
Artikelname: Dragonflies (Naturalists Handbook)
Artikelbeschreibung: This book looks into the complex behaviour of these beautiful insects, including their reproductive behaviour and flight. It also looks at conservation and recording as well as techniques to study them.
Artikelname: Grasshoppers
Artikelbeschreibung: Grasshoppers are easy to detect by their sound and their movement and they are easy to collect and study. This book gives some background to their life-histories, adaptations to habitats and distribution. There is also the key which will allow easy identification of the more common species
Artikelname: Ground Beetles
Artikelbeschreibung: Ground beetles are handsome, lively creatures beneficial to gardeners and of interest to a growing number of biologists. The first edition of this book made the common species accessible to many who had not studied ground beetles before. In this revised edition the keys are no longer restricted to the commoner species; they have been improved and extended to cover all species currently known in Britain, including nine new ones that have been added to the British list since the first publication of this book in 1986 (see p. 91). The book also introduces ground beetle natural history and offers ideas and techniques that will enable readers to undertake their own investigations on these fascinating insects.
Artikelname: Insects and Thistles
Artikelbeschreibung: Thistles are common plants found throughout the British Isles, often invading crops and pastures as weeds. Most of the information here concerns the two commonest species, Cirsium arvense creeping thistle and C. vulgare spear thistle. Despite their spines, thistles support a rich and varied fauna of insect herbivores with their associated predators, parasitoids and inquilines. Thistles have spread rapidly in countries to which they have been introduced without their insect fauna, often reaching pest status, suggesting that the fauna plays an important part in limiting their numbers (see chapter 5).Most species dependent on thistles are herbivores. Most are restricted to particular microhabitats on the thistle and there are distinct guilds of insects associated with different parts of the plant. The flower heads, the insides of stems, roots and leaves carry characteristic concealed faunas of gall-inducers, borers and miners, apart from the more conspicuous insects which visit flowers, browse leaves or suck sap. Within each guild there are differences in timing of life cycle, methods of feeding and causes of mortality which may minimise competition. Some species are monophagous and others are highly polyphagous, but most show varying degrees of specialisation between the two extremes, being found on a number of species of Asteraceae (=Compositae) (Zwolfer 1965*).
Predators are less restricted, feeding on a range of insect species and selecting microhabitats which may occur on many plant species. Insect parasites (parasitoids) are more conservative; each develops on a single host insect, and most species are restricted to a few related host species, particularly those with similar habits.
The plants themselves provide a succession of microenvironments. Communities associated with the flower heads develop during summer, detrital feeders colonise the brown, dead heads during late autumn and winter, and more enter when the heads and stems have fallen.Thistles contain a number of independent communities, connected only by their common dependence on the plant and by the relatively few roving predators which wander all over the plant. These miniature communities offer opportunities for studying a variety of ecological and entomological topics and the fauna of parts of thistle plants (or closely related species such as knapweeds) has been used to study food webs and life cycle interactions (Redfem 1968; Michaelis 1984), energetics (Cameron and Redfem 1974; Michaelis 1984, 1985b), population dynamics (Varley 1947; Michaelis 1985a; Redfem and others 1992), competition and parasite-host interactions (Zwolfer 1970, 1979,1987). Zwolfer (1988) reviews current literature on insect-thistle interactions and community ecology. "
Artikelname: Insects on Nettles
Artikelbeschreibung: There is a natural tendency to avoid Stinging nettles because of their obvious unpleasant associations. However, I hope this book will convince you that nettles offer exceptional opportunities for field studies and simple experiments in ecology. In the first place, nettles are almost universally available for they grow on clay, peat and sandy soils, in grassland, woodland, heath and fen, in agricultural and waste land and around human habitations; from the coast up to 730 m (2400 ft) in the Pennines and from the Scilly Isles to the Shetlands. Secondly, Stinging nettle is a vigorous, long-lived plant which often occurs in dense stands producing a distinctive habitat which can be examined, treated and sampled in various ways: unlike many other plants, it can be readily grown from seed or rhizome (underground stem), or cut down whenever you wish, and its growth or regrowth can be measured and compared under different conditions such as the amount of shade it receives or the kind of soil it grows on. And finally, Stinging nettle sustains an extremely rich and diverse insect fauna offering a miniature world for exploration. Enough is known about these insects to point out some of their fascinating and contrasting life styles and subtle interactions, but there is much more we do not yet know. This book gives keys to the identification of about 100 species or groups of insects that regularly occur on nettle, with notes on their biology and suggested topics for study - but first a few essentials about the plant itself. There are two kinds of nettle in Britain, the common, perennial Stinging nettle Urtica dioica L. and the more local, annual Small nettle Urtica urens L. Urtica is the Latin name for nettle whilst dioica is derived from the Greek for two houses (di-oikos) and refers to the fact that this species has separate male and female plants. Since some insects favour the developing seeds on female plants and others feed on the pollen of male flowers,this distinction is important.
Artikelname: Ladybirds
Artikelbeschreibung: Ladybirds are among the most attractive and popular of British insects. Many species are common. They may be found in almost any habitat from sea coast to mountain top, and from city wastelands to windswept heathlands. Almost every garden will have at least one species.There are a number of reasons for the popularity of ladybirds. Firstly, many ladybirds have bright contrasting colour patterns, although not all are red with black spots. Some are black with red spots, others are yellow and black, or maroon with cream spots. Some have stripes instead of spots and some no spots at all. Secondly, ladybirds are connected with good fortune in many myths and legends. The name 'ladybird' is itself derived from the commonest British species, the 7 spot ladybird. The lady in question is Our Lady, the Virgin Mary. The red colour is said to represent her cloak which in early paintings and sculptures was usually depicted as being red, and the seven black spots represent the seven joys and seven sorrows of Mary. Finally, most ladybirds are carnivorous. Both adults and larvae feed on aphids, which suck sap and damage many crops and garden plants. So, ladybirds are of great importance as major natural predators ef these pests.Yet, despite their usefulness and popularity, much is still unknown about the distribution, behaviour and life histories of British ladybirds.This book aims to outline what is known about the British species, and to stress areas of scientific ignorance. We hope the book will encourage you to discover more for yourselves, particularly through your own research. This group offers great scope for original observations and experiments, and its potential in the biological control of plant pests makes new contributions to our knowledge of ladybirds even more worthwhile.
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Artikelname: Microscopic Life in Sphagnum
Artikelbeschreibung: The bogland habitat, which is often threatened by peat extraction, has very great natural history value. It is known to support interesting plants, dragonflies and birds. Less widely recognised, but no less important, is the unique community of microscopic plants and animals inhabiting the leaves and crevices of Sphagnum, the moss that dominates the bog vegetation. This community is well worth exploring. Under the microscope, a drop of water squeezed from bog moss will reveal a wonderful diversity of complex and distinctive organisms. Some are conspicuous and easy to name; others are poorly known and identifiable only to the major group. This book introduces the community, and gives keys for identification, which has hitherto required the use of a range of rather inaccessible literature and specialist expertise. Perhaps this book will help to encourage research that will reveal more about the range of species present, their natural history, and particularly the interspecific interactions that make the bog moss ecosystem so fascinating to ecologists.Ecological processes are usually studied in the familiar context of a wood or a meadow. Here they operate on a more convenient, compact and accessible scale. If moss samples are collected with care and restraint from unthreatened sites, an ecological study performed on a handful of Sphagnum need not harm the environment and will bring great benefits in terms of increased understanding and appreciation of a microcosm that deserves a wider audience.
Artikelname: Plant Galls
Artikelbeschreibung: A much-needed book on a fascinating subject, enabling you to study plany galls in detail. Gall-makers, communities and interactions, identification, numerous keys, food webs and techniques are included.
Artikelname: Solitary Wasps
Artikelbeschreibung: Solitary wasps are common insects although they often go unnoticed. They are well.worth looking at; their beautifully elaborate behaviour poses questions of great ecological and evolutionary concern and much remains to be discovered about the biology of even the commonest British species. This book aims to show how interesting solitary wasps can be and give enough information about their natural history to enable readers to make biological observations that will make a real contribution to knowledge; it helps with the naming of wasps and it offers some methods and techniques, references and addresses that may be useful in pursuing the investigation and in communicating the findings.
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Artikelname: Weevils
Artikelbeschreibung: There are more species of weevils than of any other family of animals or plants on earth. The exact number is not known. In recent years, the family Curcu1ionidae, which once included all the weevils, has been subdivided and several smaller families have been split off from it, but even so the remaining Curcu1ionidae constitute the largest family in the world. A conservative estimate of the number of known weevil species is 40,000.
In Britain we have relatively few species, about 570, and there are more species of rove beetle (Staphylinidae) and parasitic wasps (Ichneumonidae) than of weevils. Nevertheless, the number of weevils is considerable, yet we seldom see them unless we actively search for them. How do we go about finding them?
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