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journal = {Proceedings of the National Academy of Sciences},  }  @article{Orth_2006,  author = {Orth, Robert J. and Carruthers, Tim J. B. and Dennison, William C. and Duarte, Carlos M. and Fourqurean, James W. and Heck, Kenneth L. and Hughes, A. Randall and Kendrick, Gary A. and Kenworthy, W. Judson and Olyarnik, Suzanne and Short, Frederick T. and Waycott, Michelle and Williams, Susan L.},  title = {{A Global Crisis for Seagrass Ecosystems}}, 
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pages = {987-996},  year = {2006},  doi = {10.1641/0006-3568(2006)56[987:AGCFSE]2.0.CO;2},  abstract = {Seagrasses, marine flowering plants, have a long evolutionary history but are now challenged with rapid environmental changes as a result of coastal human population pressures. Seagrasses provide key ecological services, including organic carbon production and export, nutrient cycling, sediment stabilization, enhanced biodiversity, and trophic transfers to adjacent habitats in tropical and temperate regions. They also serve as “coastal canaries,” global biological sentinels of increasing anthropogenic influences in coastal ecosystems, with large-scale losses reported worldwide. Multiple stressors, including sediment and nutrient runoff, physical disturbance, invasive species, disease, commercial fishing practices, aquaculture, overgrazing, algal blooms, and global warming, cause seagrass declines at scales of square meters to hundreds of square kilometers. Reported seagrass losses have led to increased awareness of the need for seagrass protection, monitoring, management, and restoration. However, seagrass science, which has rapidly grown, is disconnected from public awareness of seagrasses, which has lagged behind awareness of other coastal ecosystems. There is a critical need for a targeted global conservation effort that includes a reduction of watershed nutrient and sediment inputs to seagrass habitats and a targeted educational program informing regulators and the public of the value of seagrass meadows.},  url = {http://bioscience.oxfordjournals.org/content/56/12/987.abstract},  eprint = {http://bioscience.oxfordjournals.org/content/56/12/987.full.pdf+html},  journal = {BioScience},  }  @article{Costanza_1997,  doi = {http://dx.doi.org/10.1038/387253a0},  url = {http://www.esd.ornl.gov/benefits_conference/nature_paper.pdf}, 
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journal = {Nature},  }  @article{Harborne_2006,  doi = {http://doi:10.1016/S0065-2881(05)50002-6},  url = {http://www.sciencedirect.com/science/article/pii/S0065288105500026}, 
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title = {{How Many Species Are There on Earth and in the Ocean?}},  journal = {{PLoS} Biology},  }  @article{Sogin_2006,  author = {Sogin, Mitchell L. and Morrison, Hilary G. and Huber, Julie A. and Welch, David Mark and Huse, Susan M. and Neal, Phillip R. and Arrieta, Jesus M. and Herndl, Gerhard J.},   title = {Microbial diversity in the deep sea and the underexplored “rare biosphere”},  volume = {103},   number = {32},   pages = {12115-12120},   year = {2006},   doi = {10.1073/pnas.0605127103},   abstract ={The evolution of marine microbes over billions of years predicts that the composition of microbial communities should be much greater than the published estimates of a few thousand distinct kinds of microbes per liter of seawater. By adopting a massively parallel tag sequencing strategy, we show that bacterial communities of deep water masses of the North Atlantic and diffuse flow hydrothermal vents are one to two orders of magnitude more complex than previously reported for any microbial environment. A relatively small number of different populations dominate all samples, but thousands of low-abundance populations account for most of the observed phylogenetic diversity. This “rare biosphere” is very ancient and may represent a nearly inexhaustible source of genomic innovation. Members of the rare biosphere are highly divergent from each other and, at different times in earth's history, may have had a profound impact on shaping planetary processes.},   URL = {http://www.pnas.org/content/103/32/12115.abstract},   eprint = {http://www.pnas.org/content/103/32/12115.full.pdf},   journal = {Proceedings of the National Academy of Sciences}   }