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Country codes; e.g., "Switzerland" can indicate the letters CH; ICAO spelling alphabet: where Mike signifies M and Romeo R; Conventional abbreviations for US cities and states: for example, "New York" can indicate NY and "California" CA or CAL. The abbreviation is not always a short form of the word used in the clue. For example:
Agriculture, Ecosystems & Environment is an international peer-reviewed scientific journal published eighteen times per year by Elsevier. It covers research on the interrelationships between the natural environments and agroecosystems, and their effects on each other. The editors-in-chief are Tom Veldkamp and Yong Li.
(pl.) aboiteaux A sluice or conduit built beneath a coastal dike, with a hinged gate or a one-way valve that closes during high tide, preventing salt water from flowing into the sluice and flooding the land behind the dike, but remains open during low tide, allowing fresh water precipitation and irrigation runoff to drain from the land into the sea; or a method of land reclamation which relies ...
Like other ecosystems, agroecosystems form partially closed systems in which animals, plants, microbes, and other living organisms and their environment are interdependent and regularly interact. They are somewhat arbitrarily defined as a spatially and functionally coherent unit of agricultural activity.
Agroecology is defined by the OECD as "the study of the relation of agricultural crops and environment." [2] Dalgaard et al. refer to agroecology as the study of the interactions between plants, animals, humans and the environment within agricultural systems. [3]
There are many aspects to consider; however, it is literally impossible to account for all of them. This is one of the issues when trying to conduct an analysis of an agricultural environment. In the past, an agroecosystem analysis approach might be used to determine the sustainability of an agricultural system. It has become apparent, however ...
A type of temperate grassland ecosystem dominated by a characteristic composition of grasses, herbs, and shrubs, rather than by trees. The term is used primarily in North America, but similar ecosystems can be found across the world. Precambrian rock The oldest rocks, generally more than 600 million years old. [5] presque-isle
The energy sector can have other negative impacts on the food sector when mining for fossil fuels and deforestation for biofuels reduce land for agriculture, ecosystems and other uses. The measurement of the water-energy-food nexus is complex in that the constituent sectors are measured in different units. They also vary both spatially and ...