Insect populations exhibit dramatic and dynamic spatial variation in density and in the location of intraspecific phenotypes. This spatial variation is caused by the interaction between population dynamics, population genetics, and the biotic and abiotic environment. Processes that are relevant to population densities in agricultural settings include immigration, colonization, reproduction, emigration, and mortality. Immigration, colonization, and reproduction are part of population growth, whereas emigration and mortality cause population decline. Sampling insect populations becomes a foundation for integrated pest management (IPM), and sampling will probably be an even greater part of site-specific IPM. Entomological research for estimating insect density in the presence of spatial variation has been on-going for several decades. This chapter reviews how spatial variation has traditionally been approached, and considers how this will need to be modified for designing site-specific sampling programs. It also presents an example of developing a sampling program for site-specific IPM in potatoes.
|Original language||English (US)|
|Title of host publication||The State of Site-Specific Management for Agriculture|
|Number of pages||30|
|State||Published - Nov 2 2015|
All Science Journal Classification (ASJC) codes
- Agricultural and Biological Sciences(all)