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Author: Franklin Axelrod
Publisher:
ISBN: 9781889878584
Category :
Languages : en
Pages :
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Book Description
A Systematic Vademecum to the Vascular Plants of Saba is a synoptic flora whose subject matter is the 771 taxa that have been thus far collected on the island of Saba. It is intended to meet the needs of botanists, ecologists and others who wish to know which plants are now present on the island and which plants are no longer known to be present.
Author: Franklin Axelrod
Publisher:
ISBN: 9781889878584
Category :
Languages : en
Pages :
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Book Description
A Systematic Vademecum to the Vascular Plants of Saba is a synoptic flora whose subject matter is the 771 taxa that have been thus far collected on the island of Saba. It is intended to meet the needs of botanists, ecologists and others who wish to know which plants are now present on the island and which plants are no longer known to be present.
Author: Barbara M. Thiers
Publisher: Timber Press
ISBN: 1604699302
Category : Nature
Languages : en
Pages : 281
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Book Description
“A sweeping history of the origins, development, and future of herbaria and their role in plant consternation.” —The American Gardener Since the 1500s, scientists have documented the plants and fungi that grew around them, organizing the specimens into collections. Known as herbaria, these archives helped give rise to botany as its own scientific endeavor. Herbarium is a fascinating enquiry into this unique field of plant biology, exploring how herbaria emerged and have changed over time, who promoted and contributed to them, and why they remain such an important source of data for their new role: understanding how the world’s flora is changing. Barbara Thiers, director of the William and Lynda Steere Herbarium at the New York Botanical Garden, also explains how recent innovations that allow us to see things at both the molecular level and on a global scale can be applied to herbaria specimens, helping us address some of the most critical problems facing the world today.
Author: Ed Crowell
Publisher: Texas A&M University Press
ISBN: 1623497299
Category : Nature
Languages : en
Pages : 142
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Book Description
While Barton Springs Pool is an iconic landmark of Austin and many people are familiar with the end of Barton Creek and its seven miles of public greenbelt, less is known about the forty-odd miles beyond that tumble and twist across private lands, eventually feeding the Colorado River. Legendary fights saved Barton Springs in the 1980s and 1990s, when the pool repeatedly was closed because of pollutant runoff from streets, nearby construction, and leaking sewer lines. In 1992, a highly publicized campaign resulted in land protections and stricter water standards. But will the creek and its springs become fouled again? That possibility arises upstream where tributaries and other creeks flow across mostly rural acreage, attracting new housing and business developments. Not only would city bathers lose access to the pool, but endangered species of salamanders and birds that depend on the Edwards Aquifer and its unique habitats face an uncertain future. Following the creek from downtown Austin’s Barton Springs Pool to its source as a cow-pasture trickle, longtime resident and journalist Ed Crowell explores the creek’s contentious political history, its historic and current residents, and the mounting environmental pressures threatening it. Barton Creek highlights the passionate individuals involved in the stream’s preservation, from city scientists to local landowners, who want to see the creek running clear and clean for future generations. Striking photography and vivid descriptions will entice readers to fall in love with Barton Creek all over again.
Author: Boris Rozin
Publisher: BrownWalker Press
ISBN: 1627347488
Category : Science
Languages : en
Pages : 186
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Book Description
This book is devoted to anyone who is in search of beauty in mathematics, and mathematics in the beauty around us. Attempting to combine mathematical rigor and magnificence of the visual perception, the author is presenting the mathematical study of phyllotaxis, the most beautiful phenomenon of the living nature. The distinctive feature of this book is an animation feature that explains the work of mathematical models and the transformation of 3D space. The analysis of the phyllotactic pattern as a system of discrete objects together with the mathematical tools of generalized sequences made it possible to find a universal algorithm for calculating the divergence angle. In addition, it is serving as a new proof of the fundamental theorem of phyllotaxis and analytically confirming well-known formulas obtained intuitively earlier as well as casting some doubts on a few stereotypes existing in mathematical phyllotaxis. The presentation of phyllotaxis morphogenesis as a recursive process allowed the author to formulate the hydraulic model of phyllotaxis morphogenesis and propose a method for its experimental verification. With the help of artificial intelligence, the author offered methodology for the digital measurement of phyllotaxis allowing a transition to a qualitatively new level in the study of plant morphogenesis. Due to the successful combination of mathematical constructions and their visual presentation, the materials of this study are comprehensible to readers with high school advanced mathematical levels.
Author: Erin Tripp
Publisher: University Press of Colorado
ISBN: 1607325543
Category : Nature
Languages : en
Pages : 177
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Book Description
Field Guide to the Lichens of White Rocks is a careful examination of the lichens that occur at the ecologically important and lichenologically rich urban outcropping of Fox Hills sandstone known as White Rocks Nature Preserve, located in Boulder County, Colorado. This extensively illustrated field guide presents detailed information on the macroscopic and microscopic features needed to identify species, as well as extensive notes on how to differentiate closely related lichens—both those present at White Rocks and those likely to be found elsewhere in western North America. This guide is one of the only complete lichen inventories of a sandstone formation in North America and covers all constituents including the crustose microlichen biota, traditionally excluded from other inventories. A short introduction and glossary equip the reader with basic information on lichen morphology, reproduction, and ecology. Visitors to White Rocks Nature Preserve must schedule staff-led public tours or set up sponsored research projects through the City of Boulder Open Space and Mountain Parks, and there are many other outcroppings of Fox Hills sandstone across the West, making Field Guide to the Lichens of White Rocks a significant resource for anyone interested in this unique environment. This accessible, user-friendly guide will also be valuable to naturalists and lichenologists around the world as well as educators, conservationists, and land managers concerned with the growing significance of open spaces and other protected urban areas throughout North America. The University Press of Colorado gratefully acknowledges the generous support of the University of Colorado Natural History Museum, City of Boulder Parks & Open Spaces, and the Colorado Native Plant Society board and members toward the publication of this book.
Author: Robin W. Doughty
Publisher: Texas A&M University Press
ISBN: 162349706X
Category : Nature
Languages : en
Pages : 273
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Book Description
The story of introduced species in Texas is long (hogs were introduced by European settlers in the 1500s) and fraught with controversy. In Unnatural Texas? The Invasive Species Dilemma, Robin W. Doughty and Matt Warnock Turner introduce the “big hitters” of invasive species in the state. They profile the usual suspects—feral hogs, salt cedar, and fire ants—and also lesser known invasives, such as cats and sparrows. Blending natural and environmental history with geography, this book is a much-needed, balanced exploration of invasive species in Texas. The distinctions between native and invasive are not hard and fast, and perceptions of what is invasive have changed over the centuries. A striking example, free-ranging cats—domestic, stray, and feral—can wreak havoc on small mammal and bird populations. There is not a one-size-fits-all solution for invasives, and removal or complete eradication may not be possible or even desirable. The dilemma of what to do about invasive species also raises moral, social, economic, and cultural questions. This engaging introduction to the concept of invasive species in Texas will provide context for readers and will educate people on this important issue facing the state.
Author: Jesse Cancelmo
Publisher: Texas A&M University Press
ISBN: 1623493749
Category : Photography
Languages : en
Pages : 162
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Book Description
Stunned by widespread ignorance about the Gulf of Mexico following the 2010 Macondo oil spill, underwater photographer Jesse Cancelmo decided to turn his camera on the marine life of this 600,000 square mile international sea that connects five US states, six Mexican states, and the island nation of Cuba. With the goal of countering dismissive descriptions of a Gulf plagued with dead zones and overrun by oil rigs, Cancelmo set out to capture a world rarely acknowledged, let alone seen. Between the Gulf's rich shoreline habitats and its prolific oceanic communities, thriving amid dazzling coral reefs, brine seeps, canyons, salt domes, and hard bottom banks, are more than 15,000 species, including an iconic cast of sea animals: sperm whales, manta rays, whale sharks, manatees, spotted dolphins, and more. Capturing images from locations all around the Gulf, Cancelmo reveals the beauty and glory of these diverse habitats and species. Although this is a book of sensational underwater photography, Cancelmo intends it to be more than a celebration of oceanic beauty. He also hopes to inspire better understanding and appreciation of the natural marine habitats in the Gulf and to strengthen support for their protection and sustainment.
Author: Dan Choffnes
Publisher:
ISBN: 9780231166614
Category : Medicinal plants
Languages : en
Pages : 0
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Book Description
This beautifully illustrated textbook pairs research on the biochemical properties and physiological effects of medicinal plants with a history of the ways in which humans have cultivated plant species and investigated their effects. Nature's Pharmacopeia fosters an appreciation of the chemistry and cultural resonance of herbal medicine.
Author: David Yetman
Publisher: University of Arizona Press
ISBN: 0816540047
Category : Nature
Languages : en
Pages : 209
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Book Description
The saguaro, with its great size and characteristic shape—its arms stretching heavenward, its silhouette often resembling a human—has become the emblem of the Sonoran Desert of southwestern Arizona and northwestern Mexico. The largest and tallest cactus in the United States, it is both familiar and an object of fascination and curiosity. This book offers a complete natural history of this enduring and iconic desert plant. Gathering everything from the saguaro’s role in Sonoran Desert ecology to its adaptations to the desert climate and its sacred place in Indigenous culture, this book shares precolonial through current scientific findings. The saguaro is charismatic and readily accessible but also decidedly different from other desert flora. The essays in this book bear witness to our ongoing fascination with the great cactus and the plant’s unusual characteristics, covering the saguaro’s: history of discovery, place in the cactus family, ecology, anatomy and physiology, genetics, and ethnobotany. The Saguaro Cactus offers testimony to the cactus’s prominence as a symbol, the perceptions it inspires, its role in human society, and its importance in desert ecology.
Author: Douglas J. Futuyma
Publisher: Annual Reviews
ISBN: 9780824314385
Category :
Languages : en
Pages : 0
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Book Description
