Now showing items 1-7 of 7

  • Ecosystem biogeochemistry considered as a distributed metabolic network ordered by maximum entropy production 

    Vallino, Joseph J. (2009-09-18)
    We examine the application of the maximum entropy production principle for describing ecosystem biogeochemistry. Since ecosystems can be functionally stable despite changes in species composition, we utilize a distributed ...
  • Effect of historical changes in land use and climate on the water budget of an urbanizing watershed 

    Claessens, Luc; Hopkinson, Charles S.; Rastetter, Edward B.; Vallino, Joseph J. (American Geophysical Union, 2006-03-25)
    We assessed the effects of historical (1931-1998) changes in both land-use and climate on the water budget of a rapidly urbanizing watershed, Ipswich River basin (IRB), in northeastern Massachusetts. Water diversions and ...
  • Extended local similarity analysis (eLSA) of microbial community and other time series data with replicates 

    Xia, Li C.; Steele, Joshua A.; Cram, Jacob A.; Cardon, Zoe G.; Simmons, Sheri L.; Vallino, Joseph J.; Fuhrman, Jed A.; Sun, Fengzhu (BioMed Central, 2011-12-14)
    The increasing availability of time series microbial community data from metagenomics and other molecular biological studies has enabled the analysis of large-scale microbial co-occurrence and association networks. Among ...
  • N budgets and aquatic uptake in the Ipswich River basin, northeastern Massachusetts 

    Williams, Michael; Hopkinson, Charles S.; Rastetter, Edward B.; Vallino, Joseph J. (American Geophysical Union, 2004-11-05)
    We calculated N budgets and conducted nutrient uptake experiments to evaluate the fate of N in the aquatic environment of the Ipswich River basin, northeastern Massachusetts. A mass balance indicates that the basin retains ...
  • Predicting microbial nitrate reduction pathways in coastal sediments 

    Algar, Christopher K.; Vallino, Joseph J. (Inter-Research, 2014-01-23)
    We present an ecosystem model that describes the biogeochemistry of a sediment nitrate reducing microbial community. In the model, the microbial community is represented as a distributed metabolic network. Biogeochemical ...
  • Susceptibility of salt marshes to nutrient enrichment and predator removal 

    Deegan, Linda A.; Bowen, Jennifer L.; Drake, Deanne C.; Fleeger, John W.; Friedrichs, Carl T.; Galvan, Kari A.; Hobbie, John E.; Hopkinson, Charles S.; Johnson, J. Michael; Johnson, David S.; LeMay, Lynsey E.; Miller, Erin; Peterson, Bruce J.; Picard, Christian; Sheldon, Sallie; Sutherland, Michael; Vallino, Joseph J.; Warren, R. Scott (2006-03-15)
    The sustainability of coastal ecosystems in the face of widespread environmental change is an issue of pressing concern throughout the world (Emeis et al. 2001). Coastal ecosystems form a dynamic interface between terrestrial ...
  • Wetland-estuarine-shelf interactions in the Plum Island Sound and Merrimack River in the Massachusetts coast 

    Zhao, Liuzhi; Chen, Changsheng; Vallino, Joseph J.; Hopkinson, Charles S.; Beardsley, Robert C.; Lin, Huichan; Lerczak, James A. (American Geophysical Union, 2010-10-16)
    Wetland-estuarine-shelf interaction processes in the Plum Island Sound and Merrimack River system in the Massachusetts coast are examined using the high-resolution unstructured grid, finite volume, primitive equations, ...