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  • Heleba, David (2004-11-24
      side wall fin pipe (aluminum fins with copper pipe not seen) is shown. The same fin pipe can be used overhead or under bench for heating
  • McMahon, Peg (2006-04-25
      Keeping the greenhouse clean is an important part of disease control. Also, a clean greenhouse may improve employee morale and encourage them to keep their work areas clean.
  • McMahon, Peg (2006-04-25
      Greenhouses generate a large amount of plant waste which creates a disposal problem. The material can be composted and used in other areas such as farm fields or landscapes. It is not a good idea to use the material in the greenhouse production system because of the risk of spreading disease.
  • Muller, Keona (2006-04-03
      Soothing pool of water with various aquatic plant species.
  • Wilson, Sandra (2006-05-15
      Closed greenhouse horticulture application (Almeria, Spain) - In the Watergy system, the greenhouse is connected to a tower with an internal cooling duct. Hot air rises up and is cooled by a heat exchanger. This reduces energy use.
  • McMahon, Peg (2006-04-25
      The use of mechanized watering booms or gantries has become popular. The booms can be used to deliver water as mist or a coarser spray and also fertilizers and chemicals.
  • Burgess, Guy (2005-01-27
  • Papeika, Jessica (2006-11-08
  • Muller, Keona (2006-04-03
      close-up of water lily flowers floating on pond.
  • Greenberg, Hope (2006-11-08
  • McMahon, Peg (2006-05-10
      This lecture gives an overview of the properties of water and water vapor as they relate to plants. It also describes the role of water in plants, especially transpiration. Strategies for using water to manipulate plant growth are included.
  • McMahon, Peg (2006-07-13
      The wet environment in the greenhouse requires that electrical systems be resistant to shorting out.
  • Cianfrani, C. M.; Hession, W. C.; Rizzo, D. M. (JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, 2006
      Forty-six independent stream reaches in southeastern Pennsylvania were surveyed to assess the relationships between geomorphic and habitat variables and watershed total impervious area (TIA) and to test the ability of the impervious cover model (ICM) to predict the impervious category based on stream reach variables, Ten variables were analyzed using simple and multivariate statistical techniques including scatterplots, Spearman's Rank correlations, principal components analysis (PICA), and discriminant analysis (DA). Graphical analysis suggested differences in the response to TIA between the stream reaches with less than 13 percent TIA and those with greater than 24 percent TIA. Spearman's Rank correlations showed significant relationships for large woody debris and sinuosity when analyzing the entire dataset and for depth diversity and the standard deviation of maximum pool depths when analyzing stream reaches with greater than 24 percent TIA. Classification into the ICM using DA was 49 percent accurate; however, the stream reaches did support the ICM in other ways. These results indicate that stream reach response to urbanization may not be consistent across geographical regions and that local conditions (specifically riparian buffer vegetation) may significantly affect channel response; and the ICM, used in the appropriate context, can aid in the management of stream reaches and watersheds.
  • Galford, G. L.; Mustard, J. F.; Melillo, J. M.; Gendrin, A.; Cerri, C. C.; Cerri, C. E. P. (Remote Sensing of Environment, 2008
      Since 2000, the southwestern Brazilian Amazon has undergone a rapid transformation from natural vegetation and pastures to row-crop agricultural with the potential to affect regional biogeochemistry. The goals of this research are to assess wavelet algorithms applied to MODIS time series to determine expansion of row-crops and intensification of the number of crops grown. MODIS provides data from February 2000 to present, a period of agricultural expansion and intensification in the southwestern Brazilian Amazon. We have selected a study area near Comodoro, Mato Grosso because of the rapid growth of row-crop agriculture and availability of ground truth data of agricultural land-use history. We used a 90% power wavelet transform to create a wavelet-smoothed time series for five years of MODIS EVI data. From this wavelet-smoothed time series we determine characteristic phenology of single and double crops. We estimate that over 3200 km(2) were converted from native vegetation and pasture to row-crop agriculture from 2000 to 2005 in our study area encompassing 40,000 km(2). We observe an increase of 2000 km(2) of agricultural intensification, where areas of single crops were converted to double crops during the study period. (C) 2007 Elsevier Inc. All rights reserved.
  • Alarcon, G. G.; Ayanu, Y.; Fantini, A. C.; Farley, J.; Schmitt, A.; Koellner, T. (Land Use Policy, 2015
      The Atlantic Forest is a global hotspot of biodiversity that may be on the verge of ecological collapse. Current changes in forest legislation have increased the debate concerning policy impacts on land-use and the consequences for biodiversity conservation and ecosystem services provision. This paper evaluates the impact of three environmental policy options (National Forest Act from 1965-NFA65, Business as Usual-BAU, National Forest Act from 2012-NFA12) on land-use patterns and ecosystem services in the southern Atlantic Forest. InVEST (the Integrated Valuation of Environmental Services and Tradeoffs tool) was used to model ecosystem services. Synergies and tradeoffs between commodities, erosion regulation, carbon storage and habitat for biodiversity were assessed with the Spearman Correlation Test. The NFA65 produced the largest gains for forest ecosystem services, while BAU favored commodities expansion. The NFA12 approaches the baseline, contributing less to the provision of ecosystem services and biodiversity conservation. (C) 2015 Elsevier Ltd. All rights reserved.
  • McMahon, Peg (2006-04-25
      The weeds around this greenhouse have been sprayed with an herbicide and are dying. Killing or removing weeds near a greenhouse helps control insect pests by removing the habitat for many pests.
  • Muller, Keona (2006-04-05
      Image of some unusual looking tropical cut flowers.
  • Heleba, David; Armstrong, Colleen (2005-11-23
      Western Flower thrip is a serious pest of greenhouse crops (especially floral crops). This insect is very small. Note that the "i" in "Liberty" on the dime is about the same size as the thrip.
  • Roman, J. (Reaktion Books, London, UK.London, UK, 2006
  • Roman, J. (Environmental Information Coalition, National COuncil for Science and the Environment, Washington, DC.Washington, DC, 2008

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