Annual primary production estimates for •ific oceanic regions have typically been made using a variety of measures of productivity spaced, at best, several weeks apart. Primary productivity in the oceans is known to be extremely episodic. It is hypothesized here that primary production data with a temporal resolution of several weeks have a high potential for error due to undersampling. In the ...

1. The Nature of Resources 2. Major Factors Determining Resource Use 2.1 The Quest for Control 2.2 Productivity of Living Systems 2.3 The Productivity Paradigm 2.4 The Doctrine of Systemology 3. Major Factors Affecting Natural Resource Use 3.1 The Anthropic Revolution 3.2 Technology 3.3 Culture 4. Organization for Resource Use 5. Special Resources: Energy, Food, and Water 5.1 Energy as a Resour...

Plant stress significantly reduces plant productivity. Automated on-the-go mapping of plant stress allows for timely intervention and mitigation of the problem before critical thresholds are exceeded, thereby maximizing productivity. A hyperspectral camera analyzed the spectral signature of plant leaves to identify the plant water stress. Five different levels of water treatment were created on...

Solar stills are very simple to construct and to operate but their efficiency and productivity are fairly low. To increase the yield from stills different methods were adopted. In this paper, an experimental investigation on single and double effect desalination systems are reported and effects of some parameters such as water depth, input radiation intensity and salinity on the productivity of...

The effects of water erosion (including long-term historical erosion and single erosion event) on soil properties and productivity in different farming systems were investigated. A typical sloping cropland with homogeneous soil properties was designed in 2009 and then protected from other external disturbances except natural water erosion. In 2012, this cropland was divided in three equally siz...

On September 6, 2000, the sewage outfall at the mouth of Boston Harbor was relocated 15 km offshore to alleviate pollution in Boston Harbor. The expected responses for nutrients and water column productivity parameters were for values to decrease at Boston Harbor, to increase at the outfall location, and to remain unchanged at the boundary of the near field region within 5 km of the outfall. Av...

The interaction of genotype with environment is of primary importance in many aspects of genomic research and is a special priority in the study of major crops grown in a wide range of environments. Water deficit, the major factor limiting plant growth and crop productivity worldwide, is expected to increase with the spread of arid lands. In genetically equivalent cotton populations grown under...

The water infrastructure is critical to human life, but little attention has been paid to the nuances of the water industry. Without such attention, evaluating security innovation in this domain without compromising the productivity goals when delivering water services is difficult. This paper proposes four nuances that need to be incorporated into a representative specification exemplar for th...

Intensive agricultural practices in farming systems in eastern Australia have been identified as a contributor to the poor runoff water quality entering the Great Barrier Reef (GBR). A field investigation was carried out to measure the off-farm water quality and productivity in a coastal farming system in northeastern Australia. Two vegetable crops (capsicum and zucchini) were grown in summer 2...