The VIIth International Conference on Aspartic Proteinases was held in Banff, Alberta, Canada, from October 22 to 27, 1996. The venue was the Banff Centre in the Canadian Rockies, a setting well known worldwide for the scenic beauty and mountain grandeur. It was perhaps presumptuous of the organizers to call this the seventh Aspartic Proteinase Conference but it was felt that the meeting in 1982, organized by Tom Blundell and John Kay, was of an international stature and covered topics sufficiently broad to constitute a conference. Thus, there is a discontinuity in that the Gifu Conference organized by Prof. Kenji Takahashi was the fifth International Conference on Aspartic Proteinases. Officially, there has not been a sixth Conference and if there is confusion, it is the result of my desire to recognize the importance of the London meeting. Banffhosted 106 scientists from 14 different countries. There were 26 invited speak ers among the 44 oral presentations of the 7 main sessions. In addition, there were 53 con tributed poster presentations that spanned the whole range of interest in aspartic proteinases.

Wildlife Conservation in Africa: A Scientific Approach presents comprehensive management strategies for the consumptive and non-consumptive utilization of wildlife across Sub-Saharan Africa. It describes African economies that are currently dependent on wildlife resources and prescribes strategies for conserving biodiversity in both forests and animals in ecosystems across the continent. The book covers the history and current status of how Africa's culture, traditions, healthcare and food sources are woven intricately around the local wildlife and resources. It is a necessary resource for researchers and practitioners in wildlife and ecological conservation, but is also useful for administrators and managers of protected areas.

Before Henry William Dewhurst established himself in Bloomsbury, where he lectured in 1827 8 on anatomy and physiology, he served as a ship's surgeon and made a journey to Greenland and its surrounding seas in 1824. During that time he was able to study the large Arctic creatures that fascinated him, especially whales. In the decade after his return, he prepared this thorough description of polar sea life. Published in 1834, it includes many engraved illustrations. Whales were of especial interest in this period, owing to the use of their blubber in many household objects, and Dewhurst also touches on the practice of whaling. His work was one of the first studies to examine the different species of whales, as well as dolphins and other marine life. It stands as an important contribution to the development of Arctic zoology."

Philip Henry Gosse (1810 88) is best remembered today for the portrait given by his son Edmund in his autobiographical Father and Son. In his own day, he was famous as a natural historian, and his books were extremely popular. (His Naturalist's Sojourn in Jamaica is also reissued in this series.) In 1857, Gosse moved from London to Devon, where he spent the rest of his life. This 1865 book offers essays about various aspects of the geography and natural history of the West Country. There are some digressions (one chapter is on the woods of Jamaica), and reminders of the two great Victorian crazes, for ferns and for seashore life, which Gosse's writings partly instigated. In his final essay, on Dartmoor, is an appendix which argues that Britain is the biblical Tarshish - a reminder that Gosse was also a fundamentalist Christian who struggled with many aspects of contemporary science."

In the 'Advertisement' to this 1784 two-volume work, Thomas Pennant (1726 98), zoologist and traveller, explains that his original intention was to record the zoology of North America 'when the empire of Great Britain was entire'. After the War of Independence, he changed his focus to the zoology (and people, archaeology and geology) of the Arctic regions of America, Europe and Siberia. The content of the volumes, one of the earliest works of systematic zoology published in Britain, is based on the writings of earlier zoologists, information obtained by Pennant from his scientific correspondents all over Europe and America, and his studies in private museums and collections. It is embellished with engravings of animals, birds, landscapes and artefacts. Volume 2 deals with land and water birds, including some, such as the passenger pigeon, which are now extinct. Other works by Thomas Pennant are also reissued in the Cambridge Library Collection."

While not all metals in Soil----plant systems are inherently toxic, particularly in low concentrations, there is an increasing incidence of metal pollution from aerial fallout, spoils, wastes and agricultural amendments including sewage sludge. Toxic Metals in Soil----Plant Systems discusses the processes of trace--metal cycling in contaminated ecosystems under conditions where their concentrations become toxic through high loading rates, long--term exposure or altered environmental conditions. Other environmental and pedological concentration mechanisms are discussed, including cation exchange and anion adsorption onto different soil materials. The book is divided into two sections; the first part discusses the sources and fates of metals in ecosystems, with an up--to--date review of the processes which control metal speciation in soils, metal uptake mechanisms, and plant responses to toxic metal concentrations in soils. A clear understanding of these processes and their interactions in soil is necessary before it is possible to instigate amelioration and restoration programmes for metal--contaminated land. In the second part of the book, a selection of case studies are presented which discuss metal toxicities and metal cycling in a range of different ecosystems, including managed agricultural systems, deciduous woodland, upland heather moorland, and tropical wetlands. In these studies a number of current issues are addressed, including the setting of toxicity thresholds for safe sewage sludge application to agricultural land, the accumulation of soil metals over time in aerially impacted systems, and metal transfers between ecosystem compartments, which are of particular concern in food crops. Providing an integrated view of toxic metals both in the soil and associated growing plants, this book covers a wide range of topics including agriculture, soil science, ecology and forestry and will be of use to researchers and environmental consultants working in these fields.

Nearshore hardbottom reefs of Florida's east coast are used by over 1100 species of fishes, invertebrates, algae, and sea turtles. These rocky reefs support reproduction, settlement, and habitat use, and are energy sources and sinks. They are also buried by beach renourishment projects in which artificial reefs are used for mitigation. This comprehensive book is for research scientists and agency personnel, yet accessible to interested laypersons including beachfront residents and water-users. An unprecedented collection of research information and often stunning color photographs are assembled including over 1250 technical citations and 127 figures. These shallow reefs are part of a mosaic of coastal shelf habitats including estuarine seagrasses and mangroves, and offshore coral reefs. These hardbottom habitats are federally designated as Essential Fish Habitats - Habitats of Particular Concern and are important feeding areas for federally-protected sea turtles. Organismal and assemblage responses to natural and man-made disturbances, including climate change, are examined in the context of new research and management opportunities for east Florida's islands in the sand.

This book documents analyses of the Late Cretaceous dinosaur nesting sites of the Lameta Formation at Jabalpur, Districts Dhar and Jhabua, Madhya Pradesh; Districts Kheda and Panchmahal (Gujarat); and the Pisdura, Dongargaon and Pavna sectors in the Chandrapur Districts of Maharashtra, which are exposed in India along an east-west and central axis. In this work, special emphasis has been given to the dinosaur nesting sites of the east-central Narbada River region, including its regional geology. The work was undertaken to provide detailed information concerning dinosaur eggs, eggshell fragments, nests and clutches found in the Lameta Formation of peninsular India. Prior to the present work there had been no detailed review of systematic work on the taxonomy, and of micro- and ultrastructural studies of dinosaur eggs and eggshells from the Lameta Formation. The study documents the field and laboratory investigations that facilitated the reconstruction of the morphotaxonomy, models for the burial pattern of eggs and eggshells, taphonomic implications,and the palaeoenvironmental context and palaeoecological conditions during the Late Cretaceous at the time of the extrusion of the Deccan traps, which may have been partly responsible for the extinction of the dinosaurs. The need to follow a parataxonomic classification for Indian dinosaur eggs and eggshell types is very apparent, and this book addresses this aspect in some detail. The emphasis on the application of parataxonomic schemes is based on the description of new oospecies and their comparison with previously known forms. The present work has led to the recovery of numerous nests, many collapsed eggs and hundreds of dinosaur eggshell fragments from the localities situated near the east, west and central Narbada River regions. It will be of interest to academics and professional palaeontologists, and all students of dinosaurs.

Take a virtual tour of the Smithsonian National Zoo's Small Mammal House with this high-interest STEAM book! Along the way, learn how zookeepers designed a habitat for the black-footed ferret, an animal once thought to be extinct. You'll also learn about the many factors the keepers take into consideration when designing zoo enclosures. Created in collaboration with the Smithsonian Institution, this STEAM book will ignite a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from Smithsonian employees working in STEAM fields. This STEAM book is ideal for ages 6-8 and is especially appealing to reluctant readers.

Thomas Bewick (1753-1828) began his career as an apprentice to the engraver and businessman Ralph Beilby (1743-1817). Having entered into a partnership and illustrated more than eighty small books for children, they decided to work together on this natural history, with Beilby drafting the descriptions and Bewick providing wood engravings and textual revisions. It was first published in 1790, cementing Bewick's reputation as an engraver of the natural world. Although by the end of 1797 the partnership had foundered, the book ran to seven editions and sold some 14,000 copies. Its aim was to describe and depict the domestic animals that 'so materially contribute to the strength, the wealth, and the happiness of this kingdom', and also provide entries on more exotic species, such as monkeys and big cats. Beginning with horses and cattle, this reissue of the first edition also includes an index of animals.

Chickens are many things: sources of meat and eggs, lovable pets, amusing images on merchandise, and a source of comfort at the end of a hard day. Whether we're considering joining the growing flock of backyard chicken-keepers or simply cheered by leafing through images of gorgeous poultry, our love for chickens is strong. The trend for backyard chickens has surged during the pandemic. Amazon searches for chick supplies are up 758%, with local hatcheries recording a 500% demand increase, as people look to reduce environmental impact, improve food traceability, connect with nature, or simply to relish the pure joy of chicken company. The Collins Backyard Chicken-keeper's Bible is the fourth title in this stunning and engaging series, and the perfect smallholder companion to The Beekeeper's Bible. It is packed with everything you need to fully embrace your new chicken-keeping lifestyle. A sumptuous aesthetic is paired with practical tips on identifying backyard breeds and supporting good chicken health, from basic brooding to common ailments, the best backyard breed for you to the right equipment for starting your own home flock, packaged into a beautiful, illustrative gift book. Discover the soft cuddliness of a bantam Silkie, the superb egg-sitting skills of a Plymouth Rock, the best method for constructing a chicken coop, and how to keep your chickens happy and thriving. With The Collins Backyard Chicken-keeper's Bible, discover more about these magnificent and beloved creatures.

This textbook provides a collection of case studies in paleoanthropology demonstrating the method and limitations of science. These cases introduce the reader to various problems and illustrate how they have been addressed historically. The various topics selected represent important corrections in the field, some critical breakthroughs, models of good reasoning and experimental design, and important ideas emerging from normal science.

'Living in Corfu was rather like living in one of the more flamboyant and slapstick comic operas’

It is 1935 and the Durrells have escaped the leaden summer skies of Bournemouth to arrive ‘like a troupe of medieval tumblers’ on the sun-drenched island of Corfu for a new life. Gerald Durrell’s beloved portrayal of his chaotic family – beatific Mother, Roger the dog, diet-obsessed Margo, book-loving Lawrence and gun-wielding Leslie – as well as his own adventures with a burgeoning menagerie of beasts, birds and insects (including an owl called Ulysses), is a timeless account of an idyllic childhood and an uproarious portrait of the English abroad.

This book proposes a new way to think about evolution. The author carefully brings together evidence from diverse fields of science. In the process, he bridges the gaps between many different--and usually seen as conflicting--ideas to present one integrative theory named ONCE, which stands for Organic Nonoptimal Constrained Evolution. The author argues that evolution is mainly driven by the behavioral choices and persistence of organisms themselves, in a process in which Darwinian natural selection is mainly a secondary--but still crucial--evolutionary player. Within ONCE, evolution is therefore generally made of mistakes and mismatches and trial-and-error situations, and is not a process where organisms engage in an incessant, suffocating struggle in which they can't thrive if they are not optimally adapted to their habitats and the external environment. Therefore, this unifying view incorporates a more comprehensive view of the diversity and complexity of life by stressing that organisms are not merely passive evolutionary players under the rule of external factors. This insightful and well-reasoned argument is based on numerous fascinating case studies from a wide range of organisms, including bacteria, plants, insects and diverse examples from the evolution of our own species. The book has an appeal to researchers, students, teachers, and those with an interest in the history and philosophy of science, as well as to the broader public, as it brings life back into biology by emphasizing that organisms, including humans, are the key active players in evolution and thus in the future of life on this wonderful planet.

The polyphyletic Protozoa have explored the possibility of performing almost all metazoan functions with a few subcellular organelles. Their unicellularity and structural simplicity have (i) limited diversity to 32,950 species, (ii) restricted spatial distribution to aquatic habitats (94%, against 15% in Metazoa), (iii) demonstrated the ubiquitous dominance of clonality, (iv) reduced sexualization in 50% species, (v) facilitated the use of vegetative gametes in 40% species and (vi) secondary loss of sex in 10% species. With the fastest multiplication rates, i.e. once every 6-60 hours, they occur in high densities of 105-106 cell/ml. Their diverse and complicated life cycles are described in 30 types. Being risky, the cycle involves two hosts in < 2,000 parasitic species and injective transmission mode by sanguivorous insects and ticks in < 300 species. Their radial symmetry has accelerated diversity more than in radially symmetric less speciose Porifera (8,553 species), Cnidaria (10,856) and Echinodermata (7,000). In them, diversity is decelerated in the following descending order: symmetry > clonality > hermaphroditism > motility. Motility ranges from 2-3 m for Rhizopoda to 400-2,000 m for Ciliophora. Not surprisingly, 6,800 species of arcellinids, filosians and formainifers are testated or shelled. Within 1,229 sessile species, the peritrichid and suctorian ciliates are better adapted to coloniality. Unlike those of many Metazoa, the protozoan cyst is a dynamic stage, in which clonal or sexual reproduction occurs. Over 81% protozoans encyst, as it ensures (i) 90% survival during unfavorable conditions (against 15 in 12% non-encysted protozoans), (ii) genome transfer through generations, (iii) dispersal into new habitats and (iv) transmission to new hosts. Their mean body size ranges from 2 m to 2 mm - a range over 1,000-times - only 8% aquatic metazoans cover a similar size range. In comparison to 77% macrophagy in Metazoa, only 46% protozoans are macrophagous predators. Within motile microphagy, protozoans filter 3-2 times smaller food particle at 50% cheaper clearance cost. This efficiency has expanded microphagy to 15% in protozoans, against 3% in Metazoa. Hence, their turnover rate in trophic dynamics is twice faster than that of metazoans. Foraminifers serve as ecological sensitive indicators in petroleum exploration and rise in sea level. For the first time, incidences of clonality and meiosis as well as symbiosis and parasitism have been shown to hint at the origin and evolution of different protozoan taxonomic groups during the geological past.

When this book was first published in 1989, attempts to reintroduce plants or animals into their native habitat were still relatively rare, and those that were adequately planned, designed, funded and monitored over the course of years are even scarcer. The oryx story is an exception to this, and has the added interest that it represents the first attempt to re-establish a wild population of a species when there were no others left outside captivity. This meant that zoo-bred animals had to be prepared for release into the oryx's extreme and demanding habitat in the deserts of central Oman. This book will be accessible to the informed conservationist, amateur or professional.