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Challenges in Complementing Data from Ground-Based Sensors with Satellite-Derived Products to Measure Ecological Changes in Relation to Climate—Lessons from Temperate Wetland-Upland Landscapes

Assessing climate-related ecological changes across spatiotemporal scales meaningful to resource managers is challenging because no one method reliably produces essential data at both fine and broad scales. We recently confronted such challenges while integrating data from ground- and satellite-based sensors for an assessment of four wetland-rich study areas in the U.S. Midwest. We examined relations between temperature and precipitation and a set of variables measured on the ground at individual wetlands and another set measured via satellite sensors within surrounding 4 km2 landscape blocks. At the block scale, we used evapotranspiration and vegetation greenness as remotely sensed proxies for water availability and to estimate seasonal photosynthetic activity. We used sensors on the ground to coincidentally measure surface-water availability and amphibian calling activity at individual wetlands within blocks. Responses of landscape blocks generally paralleled changes in conditions measured on the ground, but the latter were more dynamic, and changes in ecological conditions on the ground that were critical for biota were not always apparent in measurements of related parameters in blocks. Here, we evaluate the effectiveness of decisions and assumptions we made in applying the remotely sensed data for the assessment and the value of integrating observations across scales, sensors, and disciplines.
- United States Department of the Interior United States
- Upper Midwest Environmental Sciences Center United States
- US Geological Survey United States
- U.S. Department of the Interior, United States Geological Survey, Earth Resources Observation and Science Center United States
- Upper Midwest Environmental Sciences Center United States
Moderate Resolution Imaging Spectroradiometer (MODIS), growing season, Chemical technology, Climate, Climate Change, water, evapotranspiration, start-of-season, wetland landscapes; water; evapotranspiration; snow-off; Normalized Difference Vegetation Index (NDVI); climate; start-of-season; growing season; scale; Moderate Resolution Imaging Spectroradiometer (MODIS), TP1-1185, Article, scale, wetland landscapes, Wetlands, Normalized Difference Vegetation Index (NDVI), snow-off, climate
Moderate Resolution Imaging Spectroradiometer (MODIS), growing season, Chemical technology, Climate, Climate Change, water, evapotranspiration, start-of-season, wetland landscapes; water; evapotranspiration; snow-off; Normalized Difference Vegetation Index (NDVI); climate; start-of-season; growing season; scale; Moderate Resolution Imaging Spectroradiometer (MODIS), TP1-1185, Article, scale, wetland landscapes, Wetlands, Normalized Difference Vegetation Index (NDVI), snow-off, climate
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).8 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 10% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Average
