LINCOLN, Neb. (AP) - In contrast to a study ordered by the Nebraska Legislature, a university-funded study will identify any human causes as school researchers review scholarly work on climate change. Ronnie Green, vice chancellor for the University of Nebraska-Lincoln Institute of Agriculture and Natural Resources, told the Lincoln Journal Star (http://bit.ly/1cG9Ccf ) that he set aside $20,000 for the study after talking to university scientists who were concerned about taking part in the state-funded study. The Legislature passed a bill this past session requiring a new climate change study and expanding the committee's duties. At the urging of Omaha Sen. Beau McCoy, who disputes that humans are contributing to global warming, the Legislature modified the measure to require a study of only "cyclical" climate change. University scientists, Green said, were concerned about the way the process was evolving and the scope of the study. "I certainly support why they were concerned," Green said. The issue of climate change grew more urgent over the past year as Nebraska farms and ranches were threatened last summer by a harsh drought, which has ebbed but continues. The bill didn't define "cyclical" change, but in defining the purpose of the $44,000 study, the state Department of Agriculture limited it to "a change in the state of climate due to natural internal processes and only natural external (forces) such as volcanic eruptions and solar variations." Lincoln Sen. Ken Haar, who sponsored the original measure, has said it would be a waste of money to ignore the role humans play in climate change. "Not talking about humans is cherry-picking the data," Haar said at a committee meeting last month. "We're only going to ask for what we want to see," Haar said. Green said he funded the university's study not to counter the state's study, but instead gain an understanding of how climate change could affect Nebraska agriculture. There will be no original research for either study. The scientists will be reviewing and summarizing others' research. The university-funded study is expected to be finished by September next year so its publication coincides with the deadline set for the Legislature's study.