Results 111 to 120 of about 267,581 (312)
A SYSTEMS MODEL OF THE INDIRECT ENERGY EXPENDED IN FARM MACHINERY PRODUCTION AND USE [PDF]
Resource /Energy Economics and Policy,
Bradford, Garnett L. +2 more
core +1 more source
Foraging Behavior of Tetramorium Caespitum in an Urban Environment: the Effect of Food Quality on Foraging [PDF]
, 2016 Animals\u27 foraging strategies are directly related to their fitness. Proposed models of optimal foraging assume that animals strategize in terms of maximizing benefits over the cost of acquiring resources. Ants are social insects that are comparable in
Crofton, Nicole A. +2 more
core +1 more source
Land Degradation &Development, EarlyView.ABSTRACT Forest ecosystem services (ESs) are garnering increasing public attention as awareness grows regarding society's fundamental dependence on them for well‐being. Forest fires, one of the major disturbances of ESs, are becoming more frequent and destructive, exacerbated in part by climate change.
Emanuele Spada +6 more
wiley +1 more source
Clover:cereal bi-cropping for organic farms (OF0173) [PDF]
, 2002 This is the final report of Defra project OF0173. The attached main report starts with a more detailed summary, from which this text is extracted. IGER, IACR and others developed a system for growing cereals, especially for whole crop silage, that ...
Clements, Dr R. O.
core
Nordic Journal of Botany, EarlyView.Stemodia diplohyptoides M.M.Sosa & Dematt. and S. lobelioides Lehm. (Gratioleae, Plantaginaceae) are reported for the first time in Paraguay, found in Alto Paraná and Presidente Hayes departments, respectively. These new records extend the known geographical range of both species, representing the northern records to date, S.
Y. Carlés Bechara +4 more
wiley +1 more source
Modelling risk in farm planning [PDF]
In this article a mathematical model is presented to assist management decisions on an integrated crop and livestock farm. Risk is incorporated into the model as the negative deviation of the actual gross income from the expected value of an activity's ...
Ghebretsadik, A.H., Visagie, S.E.
core +1 more source
New York and Vermont Corn Silage Hybrid Trials [PDF]
, 2017 The corn silage hybrid evaluation program expanded to 77 hybrids in 2018. Hybrid evaluation at multiple environments helps in decision making and expands the reach of this type of data to more farmers.
Darby, Heather +10 more
core +2 more sources
Overexploitation can counteract top‐down control and the paradox of enrichment in simple food chains
Oikos, EarlyView.Because of its high abundance or its high feeding intensity, a consumer can overexploit its resource by consuming it on a shorter timescale than resource regeneration. While this short‐term overexploitation is widespread in nature, its general implications for biotic control patterns and ecosystem stability are not clear.
Josquin Guerber +2 more
wiley +1 more source
Beef production from feedstuffs conserved using new technologies to reduce negative environmental impacts [PDF]
, 2007 End of project reportMost (ca. 86%) Irish farms make some silage. Besides directly providing feed for livestock, the provision of grass silage within integrated grassland systems makes an important positive contribution to effective grazing management ...
Black, Alistair D +23 more
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Multiple scales of fear: foraging behaviour of white‐naped jays in semiarid landscapes
Oikos, EarlyView.Animals must constantly balance the need to find resources with the risk of predation. Not only avoiding direct encounters with predators but also assessing the overall risk of their environment using cues, social information or habitat traits at multiple spatial and temporal scales.
Maria Carolina Beiriz +2 more
wiley +1 more source