A5030208538- Remote Sensing in Agriculture
- Species Distribution and Climate Change
- Remote Sensing and LiDAR Applications
- Plant Water Relations and Carbon Dynamics
- Land Use and Ecosystem Services
- Forest ecology and management
- Atmospheric and Environmental Gas Dynamics
- Ecology and Vegetation Dynamics Studies
- Climate variability and models
- Geotourism and Geoheritage Conservation
- Forest Management and Policy
- Ecosystem dynamics and resilience
- Research Data Management Practices
- Landslides and related hazards
- Data Analysis with R
- Semantic Web and Ontologies
- Cryospheric studies and observations
- Forest Ecology and Biodiversity Studies
- Rangeland Management and Livestock Ecology
- Scientific Computing and Data Management
- Conservation, Biodiversity, and Resource Management
- Geochemistry and Geologic Mapping
- Sustainability and Climate Change Governance
- Wildlife Ecology and Conservation
- Fire effects on ecosystems
Michigan State University
2015-2025
Örebro University Hospital
2024
NSF National Center for Atmospheric Research
2014-2015
NSF NCAR Climate and Global Dynamics Laboratory
2015
Carnegie Institution for Science
2010-2013
Stanford University
2010-2013
The Community Land Model (CLM) is the land component of Earth System (CESM) and used in several global regional modeling systems. In this paper, we introduce model developments included CLM version 5 (CLM5), which default for CESM2. We assess an ensemble simulations, including prescribed prognostic vegetation state, multiple forcing data sets, CLM4, CLM4.5, CLM5, against a range metrics from International Benchmarking (ILAMBv2) package. CLM5 includes new updated processes parameterizations:...
The 2017–2027 National Academies' Decadal Survey, Thriving on Our Changing Planet, recommended Surface Biology and Geology (SBG) as a "Designated Targeted Observable" (DO). SBG DO is based the need for capabilities to acquire global, high spatial resolution, visible shortwave infrared (VSWIR; 380–2500 nm; ~30 m pixel resolution) hyperspectral (imaging spectroscopy) multispectral midwave thermal (MWIR: 3–5 μm; TIR: 8–12 ~60 measurements with sub-monthly temporal revisits over terrestrial,...
Abstract We stand at the threshold of a transformative era in Earth observation, marked by space‐borne visible‐to‐shortwave infrared (VSWIR) imaging spectrometers that promise consistent global observations ecosystem function, phenology, and inter‐ intra‐annual change. However, full value repeat spectroscopy, information embedded within different temporal scales, reliability existing algorithms across diverse types vegetation phenophases have remained elusive due to absence suitable...
Rapid environmental change is driving the need for complex and comprehensive scientific information that supports policies aimed at managing natural resources through international treaties, platforms, networks.One successful approach delivering such has been development of Essential Variables climate (1), oceans (2), biodiversity (3), sustainable goals (4) (ECVs, EOVs, EBVs, ESDGVs, respectively).These efforts have improved consensus on terminology, identified essential sets measurements...
Abstract. Despite the importance of tropical forests to global carbon cycle, ecological controls over landscape-level variation in live aboveground density (ACD) are poorly understood. Here, we conducted a spatially comprehensive analysis ACD for continental forest – Barro Colorado Island, Panama (BCI) and tested site factors that may control such variation. We mapped 1256 ha BCI using airborne Light Detection Ranging (LiDAR), which was well-correlated with ground-based measurements...
Geodiversity (i.e., the variation in Earth's abiotic processes and features) has strong effects on biodiversity patterns. However, major gaps remain our understanding of how relationships between geodiversity vary over space time. Biodiversity data are globally sparse concentrated particular regions. In contrast, many forms can be measured continuously across globe with satellite remote sensing. Satellite sensing directly measures environmental variables grain sizes as small tens metres...
Abstract Lidar‐derived forest structural diversity (FSD) metrics—including measures of canopy height, vegetation arrangement, cover (CC), complexity and leaf area density—are increasingly used to describe characteristics can be infer many ecosystem functions. Despite broad adoption, the importance spatial resolution (grain extent) over which these metrics are calculated remains largely unconsidered. Often researchers will quantify FSD at grain size process interest without considering scale...
Understanding how and why plant communities vary across space has long been a goal of ecology, yet parsing the relative importance different influences remained challenge. Species-specific models are not generalizable, whereas broad functional type lack important detail. Here we consider trait patterns at local scale ask whether chemical traits more closely linked to environmental gradients or changes in species composition. We used visible-to-shortwave infrared (VSWIR) spectrometer Carnegie...
Abstract Net primary production (NPP) by plants represents the largest annual flux of carbon dioxide (CO 2 ) from atmosphere to terrestrial biosphere, playing a critical role in global (C) cycle and Earth's climate. Rates NPP tropical forests are thought be among highest on Earth, but debates about magnitude, patterns, controls tropics highlight uncertainty our understanding how may respond environmental change. Here, we compared estimates generated using three common approaches: (1)...
Abstract. Seasonal changes in plant leaf area have a substantial impact on global climate. The presence of leaves and the time when they appear affect surface roughness albedo, gas exchange occurring between atmosphere affects carbon dioxide concentrations water system. Thus, correct predictions phenological processes are important for understanding present future states Earth Here we compare phenology as estimated Community Land Model (CLM) to that derived from satellites drought deciduous...
Tropical forests store large amounts of carbon in tree biomass, although the environmental controls on forest stocks remain poorly resolved. Emerging airborne remote sensing techniques offer a powerful approach to understand how aboveground density (ACD) varies across tropical landscapes. In this study, we evaluate accuracy Carnegie Airborne Observatory (CAO) Light Detection and Ranging (LiDAR) system detect top-of-canopy height (TCH) ACD Osa Peninsula, Costa Rica. LiDAR field-estimated TCH...
Abstract Species–area relationships have long been used to assess patterns of species diversity across scales. Here, this concept is extended spectral using hyperspectral data collected by NASA 's Airborne Visible/Infrared Imaging Spectrometer ( AVIRIS ) over western Michigan. This mixture mesic forest and agricultural lands offers two end‐points on the local‐scale continuum; one set well‐mixed patches highly homogeneous patches. Using sum first three principal component values components'...
Research linking green space and mental health abounds. It also appears that oceanic blue spaces may be salutogenic, benefitting through their expansive viewscapes, possibly auditory olfactory stimuli. Yet, it is unknown whether the same true for freshwater bodies. In this ecological study, we explored associations between hospitalizations anxiety/mood disorder in Michigan (>30,000) proximity to North American Great Lakes. As a sensitivity analysis, examined 15 different inland lake sizes....
Abstract Aim We may be able to buffer biodiversity against the effects of ongoing climate change by prioritizing protection habitat with diverse physical features (high geodiversity) associated ecological and evolutionary mechanisms that maintain high biodiversity. Nonetheless, relationships between vary spatial biological context. In this study, we compare how well geodiversity (spatial variation in abiotic processes features) explain patterns birds trees. also evaluate consistency...
Abstract Aim Rapid global change is impacting the diversity of tree species and essential ecosystem functions services forests. It therefore critical to understand predict how spatially distributed within among forest biomes. Satellite remote sensing platforms have been used for decades map structure function but are limited in their capacity monitor by relatively coarse spatial resolution complexity scales at which different dimensions biodiversity observed field. Recently, airborne making...
Seasonal variations in vegetation have direct and indirect impacts on biogeochemical cycling, net primary productivity, the global climate. While leaf phenology many high latitude ecosystems can be predicted based a four‐season cycle, semi‐arid savanna‐type (SAST) are thought to much less consistent interannual variability quite large. SAST is often attributed soil moisture availability, different plants appear respond signals, predicting drought deciduous phenology, especially at large...
Plant functional diversity is strongly connected to photosynthetic carbon assimilation in terrestrial ecosystems. However, many of the plant traits that regulate capacity, including foliar nitrogen concentration and leaf mass per area, vary significantly between within types vertically through forest canopies, resulting considerable landscape-scale heterogeneity three dimensions. Hyperspectral imagery has been used extensively quantify across a range ecosystems but generally limited...
Abstract Terrestrial, aquatic, and marine ecosystems regulate climate at local to global scales through exchanges of energy matter with the atmosphere assist change mitigation nature‐based solutions. Climate science is no longer a study physics oceans, but also ecology biosphere. This promise Earth system science: transcend academic disciplines enable interacting physics, chemistry, biology planet. However, long‐standing tension in protecting, restoring, managing forest purposely improve...
Many developing nations are facing severe food insecurity partly because of their dependence on rainfed agriculture. Climate variability threatens agriculture-based community livelihoods. With booming population growth, agricultural land expands, and natural resource extraction increases, leading to changes in use cover characterized by persistent vegetation greening browning. This can modify local climate due changing land–atmosphere interactions. Yet, for landscapes with significant...
Global declines in biodiversity have the potential to affect ecosystem function, and vice versa, both terrestrial aquatic ecological realms. While many studies considered biodiversity-ecosystem function (BEF) relationships at local scales within single realms, there is a critical need for more examining BEF linkages among across scales, trophic levels. We present framework linking abiotic attributes, productivity, inland review examples of major ways that form realms–cross-system subsidies,...
Vegetation patterns at the landscape scale are shaped by myriad processes and historical events, understanding relative importance of these aids in predicting current future plant distributions. To quantify influence different environmental anthropogenic on observed vegetation patterns, we used simultaneous autoregressive modeling to analyze data collected Carnegie Airborne Observatory over Santa Cruz Island (SCI; California, USA). SCI is a large continental island, its limited suite species...