Author: Jason Andrew SmithPublisher:
ISBN:
Category : Florida torreya
Languages : en
Pages : 10
Book Description
The Decline of Florida Torreya
Author: Jason Andrew SmithPublisher:
ISBN:
Category : Florida torreya
Languages : en
Pages : 10
Book Description
Proposed Determination that the Florida Torreya is an Endangered Species (FL,GA), Draft Environmental Assessment (EA).
Author: Proposed determination that the Florida torreya is an endangered species
Author: Host Range and Biology of Fusarium Torreyae (Sp. Nov), Causal Agent of Canker Disease of Florida Torreya (Torreya Taxifolia Arn.)
Author: Aaron J. TrulockPublisher:
ISBN:
Category :
Languages : en
Pages : 55
Book Description
Florida torreya is an endangered, endemic conifer with a limited range near the Apalachicola River. The species began to decline in the 1950's and the population has plummeted from an estimated 375,000 to approximately 1,000. Since 1967 many investigations have tried to determine the cause, including pathological and environmental factors. The Torreya Guardians propose recovering the species through assisted migration, where the species would be "re-introduced" into the southern Appalachian Mountains, the potential "historic" range of Florida torreya. In 2010 a previously unknown pathogen was discovered on Florida torreya, which causes stem cankers and stem girdling. The potential host range was investigated via artificial inoculations. Species tested included conifers whose range overlaps with Florida torreya, other species from the Torreya genus, and conifers from the southern Appalachian Mountains. One species with an overlapping range, Florida yew (Taxus floridana); two other Torreya species, California torreya (Torreya californica) and Chinese nutmeg yew (Torreya grandis), and five species from the Appalachian Mountains, Fraser fir (Abies fraseri), Red spruce (Picea rubens), White pine (Pinus strobus), Table mountain pine (Pinus pungens), and Eastern hemlock(Tsuga canadensis) were found to be potentially susceptible. The effect of temperature on the growth, sporulation, and spore dissemination was tested, also. Growth was maximized at 25 C, sporulation was maximized at 20 C, however, there was no significant difference in spore dissemination among the temperatures tested. The necessity of wounds for infection was investigated; it was found that F. torreyae cannot infect leaf or stem tissue without the presence of wounds.
The Ghosts Of Evolution
Author: Connie BarlowPublisher: Basic Books
ISBN: 0786724897
Category : Science
Languages : en
Pages : 306
Book Description
A new vision is sweeping through ecological science: The dense web of dependencies that makes up an ecosystem has gained an added dimension-the dimension of time. Every field, forest, and park is full of living organisms adapted for relationships with creatures that are now extinct. In a vivid narrative, Connie Barlow shows how the idea of "missing partners" in nature evolved from isolated, curious examples into an idea that is transforming how ecologists understand the entire flora and fauna of the Americas. This fascinating book will enrich and deepen the experience of anyone who enjoys a stroll through the woods or even down an urban sidewalk. But this knowledge has a dark side too: Barlow's "ghost stories" teach us that the ripples of biodiversity loss around us now are just the leading edge of what may well become perilous cascades of extinction.
The Quiet Extinction
Author: Kara RogersPublisher: University of Arizona Press
ISBN: 0816531064
Category : Nature
Languages : en
Pages : 248
Book Description
In the United States and Canada, thousands of species of native plants are edging toward the brink of extinction, and they are doing so quietly. They are slipping away inconspicuously from settings as diverse as backyards and protected lands. The factors that have contributed to their disappearance are varied and complex, but the consequences of their loss are immeasurable. With extensive histories of a cast of familiar and rare North American plants, The Quiet Extinction explores the reasons why many of our native plants are disappearing. Curious minds will find a desperate struggle for existence waged by these plants and discover the great environmental impacts that could come if the struggle continues. Kara Rogers relates the stories of some of North America’s most inspiring rare and threatened plants. She explores, as never before, their significance to the continent’s natural heritage, capturing the excitement of their discovery, the tragedy that has come to define their existence, and the remarkable efforts underway to save them. Accompanied by illustrations created by the author and packed with absorbing detail, The Quiet Extinction offers a compelling and refreshing perspective of rare and threatened plants and their relationship with the land and its people.
Field Guide to the Rare Plants of Georgia
Author: Linda G. ChafinPublisher: University of Georgia Press
ISBN: 9780977962105
Category : Science
Languages : en
Pages : 548
Book Description
Abundantly illustrated with more than 400 color photographs and 200 detailed drawings, this comprehensive guide to the state's rare and endangered plants provides photographs and botanical illustrations in a single volume formatted for field use. More than 200 species are covered, including two dozen that are federally listed and 170-plus that are listed as Threatened, Endangered, Rare, or of Special Concern by the Georgia Department of Natural Resources. The guide is designed for easy, nontechnical identification of species in the field. Color photographs show the plants in their natural surroundings, and drawings emphasize the most distinctive parts of the plants. Packed with information about the plants as well as their habitats and management, the guide facilitates the quick recognition of rare species, encourages awareness of their distribution and ecological significance, and provides guidelines for ensuring their survival. Additional features include directions for using the guide, a map of Georgia's counties, descriptions of the natural communities of Georgia, references for further reading, a glossary of frequently used terms, and indexes of scientific and common plant names. The guide also includes a chapter by Jennifer Ceska and University of Georgia horticulture professor James Affolter, founding members of the Georgia Plant Conservation Alliance, on horticultural requirements of rare species and the role of GPCA in their protection. This is a valuable resource for students, wildflower enthusiasts, botanists, land managers, and environmental decision makers. Each species account includes: one or more full-color photographs Georgia distribution map line drawing emphasizing such key field identification characters as leaf, stem, flower, and fruit scientific and common names legal and wetland status brief nontechnical description emphasizing key field identification characters flowering, fruiting, or sporulation period description of species habitat information on best survey season range-wide distribution Georgia conservation status management guidelines information on similar species and related rare species list of references
Endangered Species Technical Bulletin
Author: Endangered Species
Author: Cynthia A. BilyPublisher: Greenhaven Publishing LLC
ISBN: 0737754273
Category : Young Adult Nonfiction
Languages : en
Pages : 124
Book Description
An endangered species is one whose numbers are so small that it is at risk of extinction. Extinction is a natural phenomenon; with a natural background rate of about one to five species going extinct per year. The astonishing and sad fact is that we are now losing species at 1,000 to 10,000 times the background rate. There are things we can all do now to help slow this unnatural rate of extinction. Give your readers a powerful collection of essays that explain key issues relating to endangered species. Are private property owners the best protectors of wildlife? Does the Polar bear need federal protection? Are the oceans' fish in serious decline? Answers are provided to these and other important questions.
A Research Review of Interventions to Increase the Persistence and Resilience of Coral Reefs
Author: National Academies of Sciences, Engineering, and MedicinePublisher: National Academies Press
ISBN: 030948538X
Category : Science
Languages : en
Pages : 259
Book Description
Coral reef declines have been recorded for all major tropical ocean basins since the 1980s, averaging approximately 30-50% reductions in reef cover globally. These losses are a result of numerous problems, including habitat destruction, pollution, overfishing, disease, and climate change. Greenhouse gas emissions and the associated increases in ocean temperature and carbon dioxide (CO2) concentrations have been implicated in increased reports of coral bleaching, disease outbreaks, and ocean acidification (OA). For the hundreds of millions of people who depend on reefs for food or livelihoods, the thousands of communities that depend on reefs for wave protection, the people whose cultural practices are tied to reef resources, and the many economies that depend on reefs for fisheries or tourism, the health and maintenance of this major global ecosystem is crucial. A growing body of research on coral physiology, ecology, molecular biology, and responses to stress has revealed potential tools to increase coral resilience. Some of this knowledge is poised to provide practical interventions in the short-term, whereas other discoveries are poised to facilitate research that may later open the doors to additional interventions. A Research Review of Interventions to Increase the Persistence and Resilience of Coral Reefs reviews the state of science on genetic, ecological, and environmental interventions meant to enhance the persistence and resilience of coral reefs. The complex nature of corals and their associated microbiome lends itself to a wide range of possible approaches. This first report provides a summary of currently available information on the range of interventions present in the scientific literature and provides a basis for the forthcoming final report.