Ecology and Wildlife Risk Assessment This analysis of case studies from Los Alamos National Laboratory, and the case study to

Ecology and Wildlife Risk Assessment


This analysis of case studies from Los Alamos National Laboratory, and the case study to


predict the effects of pesticides on aquatic systems and the waterfowl that uses them. Comparing


the two processes of these case studies, along with analysis of the assessments. Describing the


case study on the effects of pesticides in aquatic ecosystem, the risk assessment correlated to


observed field studies and evaluate the importance of this type of correlation in general for all


risk assessment efforts. Breaking down the ecological and social values in the assessments.


Try to establish a value for the components in each case and how the risk assessment was




The process of defining ecological value in Los Alamos National Laboratory (LANL)


from section 19.5 took an approach to take a structured process to break down the value of the


different species that are located at LANL. This was done to ensure that all relevant valued


resources was used to come up with the endpoints, and provide the proper documentation to


form a structured that was based on the resources. This process known as the general assessment


endpoints (GAE) helped eliminate data that was not needed and helped provide the means of


having data that was needed to follow through with the assessment, along with the values for


each potential ecosystem that is based on potential exposure to the environmental stressors.


The comparison of the two assessments take a different approach as the endpoints are


staggering in the LANL case as the amount of species possess many possibilities to establish


the relevant value of the endpoints that are needed to complete the assessment. By utilizing just


the values that the stakeholders suggested in case study Los Alamos National Laboratory, the


assessors focused on the immediate values on certain species the all as a hole eliminated the


possibility of the lesser values in the case study. The workgroups (aquatic) began their attempts


Ecology and Wildlife Risk Assessment 3


by explaining the main problem that is addressed within a pesticide risk assessment and it then


began to define the many sources involving uncertainty for assessing exposure and effects. This


technique of probabilistic assessment has helped in the reanalysis of the case study of pesticides


on aquatic systems. This allowed assessors to look closer at the issues at hand relating to the




The case from chapter 22 is based on a case study on how pesticides affect the impact


on ecology. This risk assessment helps explain probabilistic assessment, and it then broke down


the probability of researching the possibility of direct harm in duck populations. The time frame


that the pesticides are used to reduce grasshopper population is around the same time that the


ducks are breeding, rear young and lay eggs. This is the concern for the use of pesticides in


these pothole regions across America and Canada. This case study provides a reanalysis of the


wildlife in the pothole regions. The use of probabilistic methods is entered into the process to


characterize variability’s and the uncertainties of the effects on aquatic macro invertebrates


from the pesticides that are released to control agricultural pest control. The assessment shows


in the data that the results of the analysis are a way to relate the uncertainties of mortality in the


ecosystem. Along with the damage that is done with the food source for the ducks.


The pesticides case study applied a different risk assessment framework and hypothesizes


to improve the final analysis process to cover all the grounds and bring attention the uncertainties


of the damage that is being inflicted onto the water fowl and ducklings that are in the region


during the time of treatments. The exposure levels are at a high during the treatment process.


Thus setting up a risk assessment frame work allows the assessor to take the uncertainties to


another level to determine the effects on the contamination faze of the treatment time frame.


A framework was developed and it incorporated the characteristics of agricultural landscapes,


Ecology and Wildlife Risk Assessment 4


aquatic ecosystems, and chemicals that interact to influence exposure. From this particular


framework, the workgroups came up with a tiered system that works for the risk assessment


process where the assessment carries on from a determining assessment to probabilistic


assessments of increasing complexity. Each individual tier includes several analytical and


experimental options that reduce uncertainty and provide more complete descriptions of the


aquatic environment (Environmental Protection Agency, 2012).


The risk assessment was to use the field data to include the uncertainties that eliminates


any more future concerns with affecting the species during this process, along with the reduction


of the mortality rate among the ducklings. The breakdown of the uncertainties was used in order


to predict probability and magnitude of any adverse effects to the non-target terrestrial and


aquatic species that results from introducing into the environment, and probabilistic analysis


used in the assessment provides quantification towards the uncertainties in the risk estimate.


The risk assessment of the complex exposure to the pesticides provides methods to estimate


the probability and impacts resulting from exposure, in this approach. In al it sheds light on the


case study that certain elements and processes need to be changed in all phases of general risk




The ecological and social values of concern in the first case study Los Alamos National


Laboratory is the different array of possibilities that are presented in the amount of species that


are involved, establishing a structured assessment to eliminate the less valued resources. The


process is used to establish the most valued resources to help in setting management goals and


endpoints to complete the assessment. The ecological and social values of concern in the case


study on pesticide contamination are that there are so many aspects on how to eliminate the less


informative data to complete the case study. The social value is to combine the stakeholders


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concerns and incorporate assessment managers and assessors input to implement valued


endpoints to reach a conclusion and game plan to eliminate the risk that are on hand. The social


values of these cases, points to preserving the regions that are treated, eliminating the harm to


all organisms in the ecosystem that is contaminated by the pesticides. The social values are that


these regions house many species and food sources, this assessment breaks down the damage


that is being done and the damages that are effecting the ducks in the region. The ponds are


watersheds that protect the habitats of many organism, thus having a healthy environment is


needed to produce a healthy ecosystem. The ecological view is to preserve the regions from


harm, allowing the pesticides to be used in a manner that the organisms are not affected by them.


The value of the ecological components in the Los Alamos National Laboratory


case study would be the principle values the functional integrity, biodiversity, and the energy


dynamics and nutrient contents. By doing so the strongest of the species are chosen to be valued


endpoints, so positive results come from the assessment. The trade off would be instilling


sensitive species that could be extinct with the decision to use as a value endpoint when they are


too sensitive to give a positive result. The value of the ecological components in the effects of


pesticides on aquatic systems is that the uncertainties of the valued resources are eliminated and


evaluated to have the best valued endpoint to work with in the case study. The tradeoffs relating


to the wildlife and development is that the species if not grasshoppers that are at risk then it is


the ducks that are present during treatment process. The contamination will alter either one of


these species value in the ecosystem. The risk assessment in these cases is determined by


compiling the concerns of all parties involved and eliminating the less valued uncertainties, to


have valued data to come up with goals to meet all of the concerns. Risk assessment is known as


a process where scientific information is used in order to address any possible environmental


Ecology and Wildlife Risk Assessment 6


risks associated with pesticide use. A Good regulatory decision relys on an understanding of the


strengths and weaknesses of the specific risk assessment, sound professional judgment in


drawing conclusions from compiled data, and documented scientific research. The


Environmental Protection Agency states that risk assessments should successfully and clearly


identify the most important facts along any assumptions deemed necessary to accurately evaluate


the pesticide (Environmental Protection Agency, 2012).


The probabilistic analysis process can be improved in the chapter 22 case study by more


research of the effects on the organisms involved, along with going in another direction on


controlling the grasshopper’s presence in these pothole regions. During a process of elimination


of what harms of being caused by the toxin, the analysis can be altered to focus on the main risk


factors and once those issues are addressed then one can run another assessment and conclusion


as you eliminate even more sensitive data from the finale analyst. These points along helps


explain the importance of the Ecology and Wildlife Assessment.


The conclusion to the analysis of the case study helps break the process of implementing


different type of risk assessments for different issues on hand. The need to eliminate the more


sensitive values and collection of data is the key to performing an assessment to help the


environment. Finding the valued endpoints and compelling enough data to eliminate the more


sensitive resources, to come up with a positive and accurate decision in the long run.

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