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65 results for “subsidence”
Failed despots and the equitable distribution of fitness in a subsidized species
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Data from: Maladapted prey subsidize predators and facilitate range expansion
Dispersal of prey from predator-free patches frequently supplies a trophic subsidy to predators by providing more prey than are produced locally. Prey arriving from predator-free patches might also have evolved weaker defenses against predators and thus enhance trophic subsidies by providing easily captured prey. Using local models assuming a linear or accelerating tradeoff between defense and population growth rate, we demonstrate that immigration of undefended prey increased predator abundances and decreased defended prey through eco-evolutionary apparent competition. In individual-based models with spatial structure, explicit genetics, and gene flow along an environmental gradient, prey became maladapted to predators at the predator's range edge, and greater gene flow enhanced this maladaptation. The predator gained a subsidy from these easily captured prey, which enhanced its abundance, facilitated it's persistence in marginal habitats, extended its range extent, and enhanced range shifts during environmental changes, such as climate change. Once the predator expanded, prey adapted to it, and the advantage disappeared, resulting in an elastic predator range margin driven by eco-evolutionary dynamics. Overall, the results indicate a need to consider gene flow-induced maladaptation and species interactions as mutual forces that frequently determine ecological and evolutionary dynamics and patterns in nature.
A global analysis of subsidence, relative sea-level change and coastal flood exposure
<p>This repository contains the data and the scripts used to create results, figures and tables in the paper "A global analysis of subsidence, relative sea-level change and coastal flood exposure" by R. Nicholls et al. published in Nature Climate Change (DOI-link to follow).</p>
Data from: Puma predation subsidizes an obligate scavenger in the high Andes
The ungulate–carnivore–vulture complex is a key trophic module of many terrestrial ecosystems, but one that is globally under threat. Few have explored cross-species dependencies in this module, and the degree to which vultures rely on trophic facilitation by apex carnivores is rarely known and almost never quantified. We investigated the importance of puma Puma concolor predation on its native camelid prey, vicuñas Vicugna vicugna and guanacos Lama guanicoe, in food provisioning for Andean condors Vultur gryphus in the high Andes of north-western Argentina. We evaluated the origin of wild food sources through carcass surveys. We quantified condor feeding habits via foraging observations and through the analysis of pellet contents and stable isotopes from moulted feathers. Of the 102 fresh camelid carcasses we monitored nearly all (94%) resulted from puma predation, and the majority (85%) of camelid carcasses used by condors were killed by pumas. Camelids represented 88% of the prey items identified from 183 condor pellets, and isotopic analyses of moulted feathers from 86 individuals identified via multilocus genotyping revealed that camelids and livestock were the most important prey items, representing 45–58% and 23–38% of condor assimilated biomass, respectively. Synthesis and applications. Our results show that puma predation plays a key role in the foraging ecology of Andean condors, and highlight the importance of predatory processes that make carrion available to scavengers. We contend that targeting the conservation of ungulate–carnivore–vulture modules, rather than a species-specific approach, will be a more effective strategy to ensure the long-term persistence of Andean condors and other obligate scavengers.
Results from groundwater pumping-induced subsidence model, San Joaquin Valley
<p>The San Joaquin Valley, California has experienced dramatic subsidence over the past 100 years, but the regions with the most subsidence have shifted dramatically over this time period, from west (Kettleman City/Los Banos) to south (Tulare/Pixley/Corcoran). To date, no study has done an in-depth analysis of the mechanisms driving this shift in subsidence. We analyze head records, utilizing a novel approach that assimilates change in head data from multiple overlapping time periods, to produce an 80-year record of change in head over both the historical and modern regions of greatest subsidence. We then calibrate a deformation model to fit both historical (measured with leveling surveys) and modern (measured with Interferometric Synthetic Aperture Radar, or InSAR) datasets. We find that the stress history of the Kettleman City/Los Banos region with historically high subsidence plays a large role in reducing modern subsidence in that region, while declining heads in both regions are likely to result in major subsidence over the next several decades. This study highlights the need for active groundwater management to mitigate ongoing and future subsidence. One key dataset needed in this effort is accurate long-term head histories to reconstruct the stress history of aquifers for accurate deformation modeling.</p>
Land Subsidence PSI Measurements (2021-2023) in Oran, Algeria, Using Copernicus Sentinel-1 Data and SNAPPING Service
<p>We have processed data from the Copernicus Sentinel-1 satellite, covering the period from January 2021 to September 2023, over the borader area (around 48400 square kilometers) of Oran, Algeria. This analysis utilized the SNAPPING Persistent Scatterers Interferometry (PSI) service from the Geohazards Exploitation Platform (GEP; accessible at <a href="https://geohazards-tep.eu">https://geohazards-tep.eu</a>). Processing was performed by the EO.Lab of AUTh. </p> <p>Measurements contain average Line-of-Sight (LoS) velocities, corresponding uncertainties, and the complete displacement time series. The dataset contains ~3M points covering approximately 7800 sq.km (density of 385 points/km). </p> <p>References</p> <p>[1] Foumelis, M.; Delgado Blasco, J.M.; Brito, F.; Pacini, F.; Papageorgiou, E.; Pishehvar, P.; Bally, P. SNAPPING Services on the Geohazards Exploitation Platform for Copernicus Sentinel-1 Surface Motion Mapping. Remote Sens. 2022, 14, 6075. <a href="https://doi.org/10.3390/rs14236075">https://doi.org/10.3390/rs14236075</a></p> <p>[2] SNAPPING – Surface motioN mAPPING Sentinel-1 on-demand processing service, Online tutorial, <a href="https://docs.terradue.com/geohazards-tep/tutorials/Snapping.html">https://docs.terradue.com/geohazards-tep/tutorials/Snapping.html</a>.</p>
Elevation projections for the Mekong delta (Vietnam) under sedimentation strategies, subsidence, compaction, and sea-level rise
<p>Modelled elevation projections for the Mekong delta (Vietnam) to 2050 under scenarios of fluvial sedimentation, organic accumulation, anthropogenic-accelerated subsidence, natural compaction, and global sea-level rise. Data is in meters above sea level and georeferenced (WGS84 UTM zone 48N).<br> For methodology and detailed description of the data, please see Dunn and Minderhoud (2021) DOI to follow, in which part of the dataset is presented in Figure 6.</p>
Replication package for: "Subsidizing Labor Hoarding in Recessions: The Employment & Welfare Effects of Short Time Work"
<p>This package contains all the necessary code to replicate figures, tables and in-text statistics in Giupponi and Landais (forthcoming), "Subsidizing Labor Hoarding in Recessions: The Employment & Welfare Effects of Short Time Work", Review of Economic Studies. Detailed instructions are also provided on how to access the raw data.</p>
Benefits of subsidence control for coastal flooding in China
<p>This repository contains the data and the scripts used to create results, figures and tables in the paper "Benefits of subsidence control for coastal flooding in China " by Fang et al. (DOI-link to follow).</p>
Recovering predators link aquatic and terrestrial ecosystems: River otters subsidize coyotes with carrion (Video 1)
<p>This dataset includes a high-quality version of Video 1 from <em>Recovering predators link aquatic and terrestrial ecosystems: River otters subsidize coyotes with carrion</em> (<a href="https://doi.org/10.1002/ece3.11444" target="_blank" rel="noopener">https://doi.org/10.1002/ece3.11444</a>).</p>
Assessing Potential Groundwater Storage Capacity for Sustainable Groundwater Management in the Transitioning Post-Subsidence Metropolitan Area
<p>Citation: <br>Lin, S.‐H., Hu, J.‐C., & Wang, S.‐J. (2024). Assessing potential groundwater storage capacity for sustainable groundwater management in the transitioning post‐subsidence metropolitan area. Water Resources Research, 60, e2023WR036951. https://doi.org/10.1029/2023WR036951</p>
Land Subsidence in Pekalongan City Central Java from Remote Sensing Perspective
<p>This material has presented on 2nd International Conference on Advanced Research in Engineering and Technology in October 25, 2023.</p>
Remote Sensing DInSAR Method for Land Subsidence Detection in Semarang, Central Java, Indonesia
<p>This material has presented on 2nd International Conference on Advanced Research in Engineering and Technology in October 25, 2023.</p>
Supporting data for "A global test of the subsidized island biogeography hypothesis".
<p>Dataset for: Menegotto A., Rangel T.F., Schrader J., Weigelt P., Kreft H. 2019. A global test of the subsidized island biogeography hypothesis. Global Ecology and Biogeography, 29, 320-330.</p>
1D simulation of land subsidence with ensemble Kalman filter
<p>This folder contains:</p> <p>a) output files from 1D simulations of land subsidence with ensemble Kalman filter in heterogeneous and highly compressible aquitards, reported in Zapata-Norberto et al., 2024.</p> <p>b) R Scripts to reproduce all figures and supplementary material in the cited reference.</p>
Isotopic analysis reveals landscape patterns in the diet of a subsidized predator, the common raven
<p>1. Anthropogenic subsidies to native predators can have cascading effects on sensitive prey populations, but the spatial mechanisms behind these effects are often unknown.</p> <p>2. We used a stable isotope mixing model to reconstruct spatially naïve assimilated diets of common raven (Corvus corax) chicks and then used regression analysis to investigate landscape patterns in assimilated chick diet, with particular respect to the eggs and chicks of greater sage-grouse (Centrocercus urophasianus).</p> <p>3. Assimilated raven diets were primarily composed of mammal carrion, followed by anthropogenic food and sage-grouse eggs and chicks.</p> <p>4. Raven diets showed landscape gradients, whereby raven chicks in nests near active greater sage-grouse breeding leks consumed a higher proportion of sage-grouse eggs, sage-grouse chicks, and insects in their diet and less mammal carrion. A majority of raven nests on anthropogenic nesting structures (78.7%) were within 5 km of the nearest sage-grouse lek. Ravens nesting in high-probability greater sage-grouse nesting habitat consumed more insects and plants and less mammal carrion.</p> <p>5. In landscapes devoid of natural raven nesting substrates, such as our study area, anthropogenic nesting substrates can 'anchor' breeding ravens nearer to greater sage-grouse leks, with concomitant increases in raven predation on greater sage-grouse nests. Curtailment of anthropogenic nesting substrates within 5 km of a sage-grouse lek may have a disproportionately positive impact on sage-grouse populations. More generally, these findings highlight that the spatial arrangement of anthropogenic subsidies can result in indirect interactions between humans and predators with direct implications for predators and prey.</p>
Impacts of tectonic subsidence on basin depth and delta lobe building
<p>Data here include:</p> <ol> <li>Selenga Delta shoreline coordinates from 1862-2019 and a NWOF map</li> <li>Bathymetry data of Lake Baikal, Proval and Cherkalovo Bays.</li> <li>shapefiles of Selenga Delta channel network and avulsion</li> </ol>
Improving Aging in Place in Subsidized Housing
ClinicalTrials.gov study NCT04212442. IPD Sharing: YES. Countries: 1. Publications: 0.
A Community Paramedicine Initiative for Older Adults Living in Subsidized Housing (CHAP-EMS/CP@Clinic)
ClinicalTrials.gov study NCT02152891. IPD Sharing: Not stated. Countries: 1. Publications: 7.
Cardiovascular Health Awareness Program (CHAP) in Subsidized Social Housing
ClinicalTrials.gov study NCT03549845. IPD Sharing: NO. Countries: 1. Publications: 1.
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