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Folders: ROOT > ScienceBase Catalog > Upper Midwest Environmental Sciences Center (UMESC) > Upper Midwest Environmental Sciences Center Data > Birds, Bats, Insects, Amphibians > Monarch Butterflies ( Show all descendants )

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_ScienceBase Catalog
__Upper Midwest Environmental Sciences Center (UMESC)
___Upper Midwest Environmental Sciences Center Data
____Birds, Bats, Insects, Amphibians
_____Monarch Butterflies
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The sampling locations provided here were selected as a two-stage Generalized Random Tessellation Stratified (GRTS) sample (Stevens & Olsen 2004). The first stage of the GRTS draw used a master sample developed by the North American Bat Monitoring Program (Loeb et al. 2015) from a 10 x 10 km grid placed over the conterminous U.S., Canada, and Mexico. Each 10 x 10 km grid cell (hereafter, master cell) was assigned a GRTS rank by NABat. The rank represents the priority order in which master cells should ideally be sampled. For the second stage of the draw, sampling points within a master cell were selected. Each point was defined as a 30 x 30 m cell of the GIS raster that defined monarch-relevant habitat. Sampling...
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Data are population size estimates for monarch butterflies overwintering in Mexico as well as 76 potential stressors and 3 correlates. These stressors include disease, pesticide, herbicide, temperature, precipitation, and habitat loss measured for Mexican overwintering area and Southern, North Central, and Northeastern breeding areas.


    map background search result map search result map Monarch Threats Analysis: data Priority sampling locations for the Integrated Monarch Monitoring Program Priority sampling locations for the Integrated Monarch Monitoring Program Monarch Threats Analysis: data