Download
global amphibian decline and the ecological restoration of wetlands n.
Skip this Video
Loading SlideShow in 5 Seconds..
Global Amphibian Decline and The Ecological Restoration of Wetlands PowerPoint Presentation
Download Presentation
Global Amphibian Decline and The Ecological Restoration of Wetlands

Global Amphibian Decline and The Ecological Restoration of Wetlands

198 Vues Download Presentation
Télécharger la présentation

Global Amphibian Decline and The Ecological Restoration of Wetlands

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Global Amphibian Decline and The Ecological Restoration of Wetlands

  2. Causes of Amphibian Decline • Habitat Alteration/Loss • Agriculture, Housing Developments, Urban Sprawl • Disease • Chytridiomycosis, Trematode Worms • Climate Change • Increased UV Radiation • Pollution • Herbicides, Insecticides, Fertilizers, Chemical Contaminants • Nonindigenous Species • Pet Trade • Tiger salamanders, Axolotl’s, Pipid Frogs, Poison Dart Frogs, Red-eyed Tree Frogs http://www.wildanimalsonline.com/amphibians/tigersalamander-ambystomatigrinum.jpg http://upload.wikimedia.org/wikipedia/commons/b/be/Red_eyed_tree_frog_edit2.jpg

  3. Why Are Amphibians Important? • They are particularly sensitive to environmental change • Important bio-indicators of environmental degradation • Permeable skin makes them particularly susceptible to contaminants • They are sensitive to land-use changes • Lab specimens are used to study genetics, cellular function, and development • They are cool animals! • 32% of amphibian species are threatened with extinction • 43% of amphibian species are in population decline http://frogsaregreen.com/wp-content/uploads/2010/02/BB-Japanese-Giant-Salamander.jpg http://www.sciencephoto.com/images/showFullWatermarked.html/C0038258-Japanese_Giant_Salamander-SPL.jpg?id=670038258

  4. Challenges Amphibians Face • Their breeding-grounds have historically been filled in for more profitable enterprises • Disneyworld, Agriculture, Forestry • Amphibians have Complicated Lifestyles • Typically, the larval phase occurs in water, and the adult the phase occurs terrestrially • Little protection from Predators in large waterbodies • ISOLATED WETLANDS PROVIDE PREDATOR-FREE REPRODUCTIVE GROUNDS

  5. Restoration Projects • Small Constructed Isolated Wetlands in Most State Parks • Everglades National Park • ACE Basin • Old rice fields restored into SC DNR managed wetlands • Phinizy Swamp • Collects Augusta’s storm-water and purifies it before it reaches the Savannah River • Tuolumne River Floodplain Meadow Communities • Invasion of lodgepole pines into palustrine wetlands • Ramsar Sites • International wetland sites heavily managed for restoration of natural species compositions http://farm4.static.flickr.com/3185/2561025467_6dd107fc56.jpg http://farm1.static.flickr.com/65/168476907_884fba7cfb.jpg

  6. Small Isolated Wetland Restorations • Most state parks create isolated wetlands as breeding-grounds for amphibians • Isolated wetlands are not protected under the Clean Water Act • NO FEDERAL PROTECTION http://www.gltrust.org/admin/i.php?a=ponds-rivers-and-streams&i=DSCN3839.jpg

  7. US Forest Service Borrow Pit Photo courtesy of Joanna Hawley, MS Wildlife and Fisheries Biology

  8. Literature Cited • Amphibians. (2002). Retrieved from http://www.webspawner.com/users/petcentralamphibians/index.html • Blaustein, A. R., & Johnson, P. T. (2003). The complexity of deformed amphibians. Frontiers in Ecology and the Environment, 1(2) • Blaustein, A. R., & Kiesecker, J. M. (2002). Complexity in conservation: lessons from the global decline of amphibian populations. Ecological Letters, (5) • Conservation International, Center for Applied Biodiversity Science. (2004). Global amphibian assessment Washington, DC: Conservation International. • Flink, S. (2007). Wetlands international: ramsar sites information service. Retrieved from http://ramsar.wetlands.org/RamsarInformationServiceHome/tabid/719/language/en-US/Default.aspx • National Geographic: Wild Chronicles, (2009). Giant Japanese Salamanders [Web]. Available from http://www.youtube.com/NationalGeographic#p/search/0/VN60DCHHQ50 • Information on amphibian biology and conservation. [web]. 2011. Berkeley, California: AmphibiaWeb. Retrieved from http://amphibiaweb.org/ • Lips., K. R., Brem, F., Brenes, R., Reeve, J. D., & Alford, R. A. (2006). Emerging infectious disease and the loss of biodiversity in a neotropical amphibian community. Proceedings of the National Academy of Sciences of the United States of America, 103(9), Retrieved from http://www.jstor.org/stable/30048554doi: 10.1073 • Relyea, R. A. (2005). The impact of insecticides and herbicides on the biodiversity and productivity of aquatic communities. Ecological Applications, 15(2), Retrieved from http://www.jstor.org/stable/4543379 • Weldon, C., Preez, L. H., Hyatt, A. D., & Speare, R. Center for Disease Control and Prevention, Emerging Infectious Diseases. (2004). Origin of the amphibian chytrid fungus • Whigham, D. F. (1999). Ecological issues related to wetland preservation, restoration, creation, and assessment. The Science of the Total Environment, (240), Retrieved from http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V78-3XK0PBH-1P&_user=590719&_coverDate=10%2F18%2F1999&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_acct=C000030198&_version=1&_urlVersion=0&_userid=590719&md5=192ecd8a33b92bd3a9675ed339dd90d5&searchtype=a