iPlant Collaborative Web Portal | The iPlant Collaborative: Empowering a New Plant Biology. AskThePlantEncylcopedia | ASK. The Plant Encyclopedia - Main Page. Flore de Camargue. Extinction Risk and Diversification Are Linked in a Plant Biodiversity Hotspot. Abstract It is widely recognized that we are entering an extinction event on a scale approaching the mass extinctions seen in the fossil record. Present-day rates of extinction are estimated to be several orders of magnitude greater than background rates and are projected to increase further if current trends continue. In vertebrates, species traits, such as body size, fecundity, and geographic range, are important predictors of vulnerability. Although plants are the basis for life on Earth, our knowledge of plant extinctions and vulnerabilities is lagging.
Author Summary The rapid loss of biodiversity is the most significant ecological challenge we face today. Citation: Davies TJ, Smith GF, Bellstedt DU, Boatwright JS, Bytebier B, Cowling RM, et al. (2011) Extinction Risk and Diversification Are Linked in a Plant Biodiversity Hotspot. Academic Editor: Joel G. Received: August 9, 2010; Accepted: April 14, 2011; Published: May 24, 2011 Copyright: © 2011 Davies et al. Introduction. Bow Makers Unite Behind a Precious Tree. As the earth’s forests and other natural resources face growing peril, humans are affected in many unexpected ways. In recent years, musicians have found themselves organizing to save the pernambuco, a medium-size tropical tree native to Brazil and known for its unique red wood. Discovered by French bow makers 250 years ago, it provides the primary — indeed only — wood for making high-end bows for professional musicians. (The tree is also known as the pau-brasil.) “No comparable substitute is known to bow makers or musicians,” the International Pernambuco Conservation Initiative, a charity created by bow makers around the world to finance replanting initiatives in Brazil, says at its Web site.
“The rigidity, flexibility, density, and beauty of this wood, combined with its ability to hold a fixed curve, makes pernambuco a unique material that is essential to the craft of bow making and to the musicians who use these bows.” Angiosperms. Relationships after Qiu et al. (1999, 2000), P. Soltis et al. (1999), D. E. Soltis et al. (2000), Zanis et al. (2002) and Hilu et al. (2003). Discussion of Phylogenetic Relationships Amborella and the root of the angiosperm evolutionary tree Most analyses of the past five years concur in placing the monotypic Amborella as the sister to all other extant angiosperms, although some analyses suggest Amborella plus water lilies may occupy this pivotal position (see below). Click on an image to view larger version & data in a new window Photo of Amborella trichopoda (Amborellaceae; photo © Sangtae Kim). The placement of Amborella as sister to all other angiosperms is supported by nearly all multigene analyses of basal angiosperms, including evidence from all three plant genomes (e.g., P.
The basal angiosperms Photos of Nuphar japonica sp. Nymphaeaceae. Austrobaileyales. Relationships among Ceratophyllaceae, monocots, Chloranthaceae, magnoliids, and eudicots Monocots. Ceratophyllaceae. Magnoliids. Maps World's 10 Most Threatened Forest Hotspots - Page 2 - CI's Photos | SmugMug. Indo-Burma Hotspot: #1 in Conservation International's World’s 10 Most Threatened Forest Hotspots The rivers and floodplain wetlands of this hotspot are tremendously important for the conservation of birds, freshwater turtles and fish, including some of the largest freshwater fishes in the world.
The Tonle Sap Lake and the Mekong River are habitats for the Mekong giant catfish (Pangasianodon gigas) and the Jullien's golden carp (Probarbus jullieni). Aquatic ecosystems are under intense pressure in many areas of this hotspot. Freshwater floodplain swamps and wetlands are destroyed by draining for wet rice cultivation. Rivers have been dammed to generate electricity, resulting in flooding of sandbars and other habitats that would normally be exposed during the dry season, with severe impacts on nesting bird and turtle species. The photos and illustrations contained in this lightbox are the property of Conservation International (CI) and CI’s partners. International Year of Forests, 2011.
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