#### **An open access article describing this study is available:** Humphreys JM, Srygley RB, Branson DH. Geographic Variation in Migratory Grasshopper Recruitment under Projected Climate Change. Geographies. 2022; 2(1):12-30. [https://doi.org/10.3390/geographies2010003][1] ![enter image description here][2] #### **A video presenting remote sensing aspects of this study is available on YouTube:** Combining remote sensing and demographic data to forecast *Melanoplus sanguinipes* population dynamics. Use of Remote Sensing for Orthoptera in Pests, Inter American Coordinating Group in Plant Protection, San José, Costa Rica, February 23, 2022. [https://www.youtube.com/watch?v=II7D3-CKOO8][3] (starting at 35 minutes) #### **Overview:** ![enter image description here][4] The objective of this project was to leverage ten-years of *Melanoplus sanguinipes* (Msang) field survey data to assess the response of nymph recruitment under projected climate conditions through the year 2040. To achieve this goal, a multi-level, joint modeling framework was developed that individually assessed nymph and adult life stages while concurrently accounting for observation bias connected to preferential sampling. To ensure that density-dependence between Msang life stages was realistically captured, the model incorporated shared spatiotemporal effects that permitted adult–nymph interactions to inform demographic estimates. #### **Model code and data:** Simulated grasshopper occurrences and r-code are provided in the [Model Code and Data section][5]. Executed code can be viewed as a wepgae at RPubs: [https://rpubs.com/JMHumphreys/msang][6] [1]: https://doi.org/10.3390/geographies2010003 [2]: https://files.osf.io/v1/resources/ny4b5/providers/osfstorage/625798ebcb57b108a7a650b8?mode=render [3]: https://www.youtube.com/watch?v=II7D3-CKOO8 [4]: https://files.osf.io/v1/resources/ny4b5/providers/osfstorage/62577e46cb57b1083ea6523a?mode=render [5]: http://osf.io/kgv42 [6]: https://rpubs.com/JMHumphreys/msang