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311Appetizer Scientists perform field research for a multitude of reasons that can really benefit their studies and developments in the their field of concentration For one it yields very accurate and detailed data while it has the ability to emphasize the role and relevance of social context Field research is an excellent method for understanding the role of social context in shaping people's lives and experiences while creating a greater understanding of developmental factors It also enables the understanding of the complexities of daily life while it occurs Field research may also uncover elements of people's experiences or of group interactions of which we were not previously aware This in particular is a unique strength of field research Additionally knowing the number of species in an ecosystem can help identify the variety of factors they all have on each other An ecosystem with only 4 different species would operate much differently than an environment with around 50 In everyday life it is hard to establish and comprehend the ways in which species have an impact on each other good or bad In turn that is where field research excels
These two challenges present difficulty in the work of scientists causing them to come up with very strict guidelines and measures to focus on when developing a field study Similarly while actually performing a field investigation an overabundance of factors that play into the investigative area can make data collection near impossible and one of the biggest problem in any study would be human bias and error Side Dishes Urbanization Urbanization in terms of urban ecosystems is the process of making areas more urban It is a gradual effort of altering rural areas into more urban places Urbanization can also occur when people themselves move from rural and suburban areas to urban cities Trophic Cascade Trophic cascades occur when predators in a food web lessen the abundance or alter the behavior of their prey thereby releasing the next lower trophic level from predation For example In the coastal prairie of Northern California yellow bush lupines are fed upon by a particularly destructive herbivore the root boring caterpillar of the ghost moth Entomopathogenic nematodes kill the caterpillars and can increase the survival and seed production of lupines Entree An example of a human activity that is detrimental to biodiversity would be deforestation Deforestation is the the conversion of forest to another land use or the long term reduction of the tree canopy cover This includes conversion of natural forest to tree plantations agriculture pasture water reservoirs and urban areas but excludes timber production areas managed to ensure the forest regenerates after logging Deforestation leads to forest degradation which happens when changes within the forest negatively affect the structure or function of the stand or site and thereby lower the capacity to supply products and or ecosystem services