Measure
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While a measure can also denote an action taken, in this context, it is clearly defined as something that can be observed and involves a measurement. A measure is defined as a “number or quantity that records a directly observable value or performance. All measures have a unit attached to them: inch, centimetre, dollar, litre, etc."
Narrower Topics
Crop Yield
The amount of plant crop (such as cereal, grain or legume) harvested per unit area for a given time.
Return on Investment
Financial metric used to evaluate the performance of an investment, where the gain of the investor is expressed as a percentage of the original investment.
Total Maximum Daily Load
TMDL is the calculation of the maximum amount of a pollutant allowed to enter a waterbody so that the waterbody will meet and continue to meet water quality standards for that particular pollutant. A TMDL determines a pollutant reduction target and allocates load reductions necessary to the source(s) of the pollutant.
Alternate terms: TMDL (total maximum daily load, TMDL (pollution)
Publications
Landscape Design: Putting Your Yard on Paper—Site Measurements and Base Maps
Erin E. Alvarez, Gail Hansen, andErin E. Alvarez
Other Contacts: Keighly Graves
Calibrating Time Domain Reflectometers for Soil Moisture Measurements in Sandy Soils
Tara Bongiovanni, Pang-Wei Liu, Daniel Preston, Johanna Montanez, Courtnay Cardozo, Steven Feagle, and Jasmeet Judge
How Ecosystem Services are Measured and Why it Matters for Florida
Charles Wallace, Anna Braswell, Mysha Clarke, Andrew Ropicki, Tara Wade, Frank Asche, Ashley Smyth, Armando Ubeda, and Ed Camp
This publication describes some of the ways to measure ecosystem services and explains how the different approaches to assess ecosystems might be selected, depending on what is most important to the user.
Spatial Measurements on USGS Topo Maps
Hartwig H. Hochmair and Adam R. Benjamin
A UF/IFAS numbered peer reviewed Fact Sheet. Published by ==Natural Resources==
Conversions of Parts per Million on Soil Test Reports to Pounds per Acre
Guodong Liu, Yuncong Li, andAparna Gazula
A UF/IFAS numbered Fact Sheet. in support of UF/IFAS Extension program: Animal Systems
Current and Emerging Protocols for Carbon Measurement in Agricultural Soils
Suraj Melkani, Noel Manirakiza, Shirley Baker, andJehangir H. Bhadha
Soils have the capacity to function as a sink of atmospheric carbon dioxide and are crucial for climate regulation. Soil have the potential to store around 1.5 to 2.4 trillion metric tons of C in the soil globally. They contain large C pools that can store three times more C than the atmosphere and four times more than plants. These massive C sinks have the potential to reverse soil degradation, mitigate climate change, and enhance food security. It is therefore essential to monitor the C cycle by accurately measuring the amount of soil C in agricultural fields. This can help in developing sustainable management practices that can minimize C emissions and sequester C into the soil from the atmosphere. This publication describes the various current and emerging protocols that can be used to measure soil C.
Determination of Microalgal Concentration by Use of Turbidity Measurement
Huiping Yang andJayme C. Yee
The goal of this study was to develop a rapid assessment of microalgal concentration using a turbidity meter to serve commercial shellfish hatcheries for feeding shellfish larvae and broodstock. We used four commonly used algal species, Tetraselmis suecica, Isochrysis galbana, Chaetoceros calcitrans, and Chaetoceros gracilis, generating serial dilutions of each and measuring cell concentrations and turbidity of each sample. We identified linear correlations between cell concentration and turbidity and established standard equations between cell concentration and turbidity for each species. We sampled and quantified algae from a shellfish hatchery using these equations and compared hemocytometer counts. No differences were found (P = 0.174), indicating the accuracy of the equations. We expect that this method can provide a quick, accurate, easy method for shellfish hatcheries to quantify algal concentration and avoid either over- or underfeeding larvae and broodstock.