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954 results for “Baltimore”
Baltimore Ecosystem Study: Stream chemistry for Gwynns Falls Upper Tributaries
In the Baltimore urban long-term ecological research (LTER) project, (Baltimore Ecosystem Study, BES) we use the watershed approach to evaluate integrated ecosystem function. The LTER research is centered on the Gwynns Falls watershed, a 17,150 ha catchment that traverses a gradient from the urban core of Baltimore, through older urban residential (1900 - 1950) and suburban (1950- 1980) zones, rapidly suburbanizing areas and a rural/suburban fringe. Our long-term sampling network includes four longitudinal sampling sites along the Gwynns Falls as well as several small (40 - 100 ha) watersheds located within or near to the Gwynns Falls. The longitudinal sites provide data on water and nutrient fluxes in the different land use zones of the watershed (rural/suburban, rapidly suburbanizing, old suburban, urban core) and the small watersheds provide more focused data on specific land use areas (forest, agriculture, rural/suburban, urban). Each of the gaging sites is continuously monitored for discharge and is sampled weekly for chemistry. Additional chemical sampling is carried out in a supplemental set of sites to provide a greater range of land use. Weekly analyses includes nitrate, phosphate, total nitrogen, total phosphorus, chloride and sulfate, total suspended solids, turbidity, fecal coliforms, temperature, dissolved oxygen and pH. Cations, dissolved organic carbon and nitrogen and metals are measured on selected samples. This dataset presents stream chemistry from the Upper Gwynns Falls tributaries. From April 1999 to August 2000 Johns Hopkins University graduate student Mark Colosimo sampled a group of sites in the Upper Gwynns Falls (Red Run, Horsehead Branch, Scotts Level Branch, Holly Branch). There were two sites in the Red Run drainage. This watershed drains approximately 19 km2 and has been rapidly suburbanizing since the early 1990s. Percent impervious surface was approximately 10% as of 2002. Sampling station Red Run 1 (RR1) was approximately 35 m upstre
Baltimore Ecosystem Study: Stream chemistry for Cub Hill sites
In the Baltimore urban long-term ecological research (LTER) project, (Baltimore Ecosystem Study, BES) we use the watershed approach to evaluate integrated ecosystem function. The LTER research is centered on the Gwynns Falls watershed, a 17,150 ha catchment that traverses a gradient from the urban core of Baltimore, through older urban residential (1900 - 1950) and suburban (1950- 1980) zones, rapidly suburbanizing areas and a rural/suburban fringe. Our long-term sampling network includes four longitudinal sampling sites along the Gwynns Falls as well as several small (40 - 100 ha) watersheds located within or near to the Gwynns Falls. The longitudinal sites provide data on water and nutrient fluxes in the different land use zones of the watershed (rural/suburban, rapidly suburbanizing, old suburban, urban core) and the small watersheds provide more focused data on specific land use areas (forest, agriculture, rural/suburban, urban). Each of the gaging sites is continuously monitored for discharge and is sampled weekly for chemistry. Additional chemical sampling is carried out in a supplemental set of sites to provide a greater range of land use. Weekly analyses includes nitrate, phosphate, total nitrogen, total phosphorus, chloride and sulfate, turbidity, fecal coliforms, temperature, dissolved oxygen and pH. Cations, dissolved organic carbon and nitrogen and metals are measured on selected samples. This dataset presents stream chemistry from the Cub Hill stream sites. The Cub Hill site is 14 km from the Baltimore city center (39 degrees 24'30.20N, 76 degrees 30'50.62W) and is the location of the first permanent urban carbon flux tower in an urban/suburban environment, established in 2001 by the U.S. Forest Service. Three stream monitoring sites were established in the residential area in the footprint of the tower; Jennifer Branch at North Wind Rd. (JBNW) and two headwater tributaries to Jennifer Branch: Harford Hills (JBHH) and Ontario (JBON). These sites were sa
Baltimore Ecosystem Study: Stream chemistry for Watershed 263 sites
In the Baltimore urban long-term ecological research (LTER) project, (Baltimore Ecosystem Study, BES) we use the watershed approach to evaluate integrated ecosystem function. The LTER research is centered on the Gwynns Falls watershed, a 17,150 ha catchment that traverses a gradient from the urban core of Baltimore, through older urban residential (1900 - 1950) and suburban (1950- 1980) zones, rapidly suburbanizing areas and a rural/suburban fringe. Our long-term sampling network includes four longitudinal sampling sites along the Gwynns Falls as well as several small (40 - 100 ha) watersheds located within or near to the Gwynns Falls. The longitudinal sites provide data on water and nutrient fluxes in the different land use zones of the watershed (rural/suburban, rapidly suburbanizing, old suburban, urban core) and the small watersheds provide more focused data on specific land use areas (forest, agriculture, rural/suburban, urban). Each of the gaging sites is continuously monitored for discharge and is sampled weekly for chemistry. Additional chemical sampling is carried out in a supplemental set of sites to provide a greater range of land use. Weekly analyses includes nitrate, phosphate, total nitrogen, total phosphorus, chloride and sulfate, turbidity, fecal coliforms, temperature, dissolved oxygen and pH. Cations, dissolved organic carbon and nitrogen and metals are measured on selected samples. This dataset presents stream chemistry from the Watershed 263 subwatersheds. Watershed 263 is a 364 ha urban storm drain watershed (or sewershed), with 30,000 residents with mixed industrial, institutional, and residential land uses. In March 2004, we established monitoring sites in two sub-watersheds within W263 (Baltimore Street and Lanvale Street). Both are approximately 17 ha with 50% impervious surface and 4% vegetation cover.
Experiment replication - Gould 1684 (Johns Hopkins University, Baltimore, USA, 6/6/2022)
<p>Replication in laboratory of an experiment reported by William Gould, “An Account of the increase of weight in oyl of vitriol expos’d to the air,” <em>Philosophical Transactions</em> 14(156): 496–506 (1684):</p> <p>“On the ninth of No[vember] 1683. Three drams of oyl of vitriol so far dephlegm’d as to burn or corrode a strong packthred assunder, was expos’d to the air in a marmalade glass of three inches diameter, and plac’t in a nice pair of scales, in a room where no fire nor sun came; its increase for 7 natural days divided by less portions of time was according to the following table [...] upon the view of the whole diary of almost two months; it appear’d, the increase was more in a moist, rainy, misty, and snowy, but less in a frofty, clear, and dry seafon, as also was more in a cold than in a warm air” (pp. 497 & segg.)</p> <p>“All these circumstances which relate to the quantity will also influence very much the time of the encrease, the last thing to be consider’d in the experiment; but I shall only mention that which makes the most peculiar and principal variation in this point, and tis the proportion of the surface to the the liquor. For I find the greater or less the surface is, the quicker or slower the encrease [...] I expos’d in the same room and to the same temper of the air (as near as I could guess) three drams of the same oyl of vitriol in an open flat glass one inch broad, being only 2/3 of the diameter of that glass us’d at first with the like quantity. The result was this; that whereas the other surface of three inches diameter gain’d (as in the table) near nineteen grains the first six hours, this less surface gained a very little perceivable more then two grains in the same space of time” (pp. 503-504).</p> <p>The (potential) significance of this experiment for the debate on mineral generation lies also in the fact that it is mentioned by J.F. Henckel, <em>Pyritologia</em> (1721, Engl. transl. 1757): “Dr. Gould, of Oxford, has observed, that oil of vitriol does, by means of the air, encrease in weight, having, for that purpose, exposed a highly dephlegmated oil in an open wide glass, and weighed it accurately every day. In the space of fifty seven days three drachms of oil of vitriol came to nine drachms thirdy grains. The first day the oil increased one drachm and eight grains, afterwards, from day to day, still less, nay, the last day, scarce half a grain. This succeeds in moist foggy weather better than in dry, also in a wide than narrow vessel” (Henckel 1757, p. 374).</p> <p>Date: June 6, 2022</p> <p>Place: Johns Hopkins University, Baltimore (MD), US</p> <p>Project and Funding Source: Horizon 2020 – MGA MSCA-IF – Grant agreement No. 101019781 – SOUNDEPTH</p> <p>Work Package: 4</p>
Experiment replication - De Beaumont 1676 (Johns Hopkins University, Baltimore, USA, 6/6/2022)
<p>Replication in laboratory of an experiment reported by John de Beaumont, “Two letters... concerning rock-plants and their growth,” <em>Philosophical Transactions</em> 11: 724–742 (1676):</p> <p>“Those who endeavour to explicate those figurations mechanically, seem to have a harder task; for, if they say with Hippocrates, <em>Spiritu distenta omnia progeneris affinitate distant;</em> as though, when the mineral spirit had extended the matter, it fell into those figures upon a spontaneous recess according to its proper weight, which gives order and measure to things; as he mechanically shews by a bladder, into which if earth, sand, and filings of lead be put, and water be added to them, and we give them motion by blowing in the bladder through a reed, first they are mixt together with the water, but in a while continuing in a gentle motion they separate themselves and retire each to its like, the lead to the lead &c.” (p. 740)</p> <p>Date: June 6, 2022</p> <p>Place: Johns Hopkins University, Baltimore (MD), US</p> <p>Project and Funding Source: Horizon 2020 – MGA MSCA-IF – Grant agreement No. 101019781 – SOUNDEPTH</p> <p>Work Package: 4</p>
Experiment replication - Sendivogius 1604 (Johns Hopkins University, Baltimore, USA, 6/6/2022)
<p>Replication in laboratory of an experiment reported by Michael Sendivogius, <em>De lapide philosophorum/Novum lumen chymicum</em> (1604):</p> <p>In explaining the operation of the mineral seed (“Sperma”): “Exempli gratia, habeatur in aliqua mensa plana vasculum aquae, quod locetur in mensae medium, et circumcirca ponantur res variae, et colores varii, item sal et cetera, quodque separatim: effundatur postea aqua in medium, videbis illam aquam hic inde diffluere, et dum rivulus uno attinget colorem rubeum, rubefiet ab illo, si ad salem, salis saporem mutabitur, et sic de caeteris. Aqua enim loca non mutat, sed locorum diversitas mutat aquam. Simili modo e centro Terrae semen vel sperma a quatuor elementis in centrum proiectum ad varia loca transit, et secundum loci Naturam naturatur res, si pervenit ad locum terrae et aquae purum, fit res pura” (pp. 22-23)</p> <p>Date: June 6, 2022</p> <p>Place: Johns Hopkins University, Baltimore (MD), US</p> <p>Project and Funding Source: Horizon 2020 – MGA MSCA-IF – Grant agreement No. 101019781 – SOUNDEPTH</p> <p>Work Package: 4</p>
Seeing the light: nitrate spiraling and hydrogeomorphic characteristics of restored and unrestored streams in the Baltimore, MD region.
The continually increasing global population residing in urban landscapes impacts numerous ecosystem functions and services provided by urban streams. Urban stream restoration is often employed to offset these impacts and conserve or enhance the various functions and services these streams provide. Despite the assumption that ‘if you build it, [the function] will come’, current understanding of the effects of urban stream restoration on stream ecosystem functions are based on short term studies which may not capture variation in restoration effectiveness over time. We quantified the impact of stream restoration on nutrient and energy dynamics of urban streams by studying 10 urban stream reaches (five restored, five unrestored) in the Baltimore, Maryland, USA, region over a two-year period. We measured gross primary production (GPP) and ecosystem respiration (ER) at the whole-stream scale continuously throughout the study and nitrate (NO3-N) spiraling rates seasonally (spring, summer, autumn) across all reaches. There was no significant restoration effect on NO3-N spiraling across reaches. However, there was a significant canopy cover effect on NO3-N spiraling, and directly comparing paired sets of unrestored-restored reaches showed that restoration does affect NO3-N spiraling after accounting for other environmental variation. Furthermore, there was a change in GPP:ER seasonality, with restored and open-canopied reaches exhibiting higher GPP:ER during summer. The restoration effect, though, appears contingent upon altered canopy cover, which is likely to be a temporary effect of restoration and is a driver of multiple ecosystem services, e.g., habitat, riparian nutrient processing. Our results suggest that decision-making about stream restoration, including evaluations of nutrient benefits, clearly needs to consider spatial and temporal dynamics of canopy cover and tradeoffs among multiple ecosystem services. Here we provide site descriptions and nitrate spiraling d
Seeing the light: metabolic activity of restored and unrestored streams in the Baltimore, MD region.
The continually increasing global population residing in urban landscapes impacts numerous ecosystem functions and services provided by urban streams. Urban stream restoration is often employed to offset these impacts and conserve or enhance the various functions and services these streams provide. Despite the assumption that ‘if you build it, [the function] will come’, current understanding of the effects of urban stream restoration on stream ecosystem functions are based on short term studies which may not capture variation in restoration effectiveness over time. We quantified the impact of stream restoration on nutrient and energy dynamics of urban streams by studying 10 urban stream reaches (five restored, five unrestored) in the Baltimore, Maryland, USA, region over a two-year period. We measured gross primary production (GPP) and ecosystem respiration (ER) at the whole-stream scale continuously throughout the study and nitrate (NO3-N) spiraling rates seasonally (spring, summer, autumn) across all reaches. There was no significant restoration effect on NO3-N spiraling across reaches. However, there was a significant canopy cover effect on NO3-N spiraling, and directly comparing paired sets of unrestored-restored reaches showed that restoration does affect NO3-N spiraling after accounting for other environmental variation. Furthermore, there was a change in GPP:ER seasonality, with restored and open-canopied reaches exhibiting higher GPP:ER during summer. The restoration effect, though, appears contingent upon altered canopy cover, which is likely to be a temporary effect of restoration and is a driver of multiple ecosystem services, e.g., habitat, riparian nutrient processing. Our results suggest that decision-making about stream restoration, including evaluations of nutrient benefits, clearly needs to consider spatial and temporal dynamics of canopy cover and tradeoffs among multiple ecosystem services. Here we provide model estimates for GPP, ER, and net ecos
Seeing the light: high temporal frequency (5-10min resolution) measurements of dissolved oxygen, photosynthetically active radiation, temperature, and depth used to estimate metabolism in restored and unrestored Baltimore streams.
The continually increasing global population residing in urban landscapes impacts numerous ecosystem functions and services provided by urban streams. Urban stream restoration is often employed to offset these impacts and conserve or enhance the various functions and services these streams provide. Despite the assumption that ‘if you build it, [the function] will come’, current understanding of the effects of urban stream restoration on stream ecosystem functions are based on short term studies which may not capture variation in restoration effectiveness over time. We quantified the impact of stream restoration on nutrient and energy dynamics of urban streams by studying 10 urban stream reaches (five restored, five unrestored) in the Baltimore, Maryland, USA, region over a two-year period. We measured gross primary production (GPP) and ecosystem respiration (ER) at the whole-stream scale continuously throughout the study and nitrate (NO3-N) spiraling rates seasonally (spring, summer, autumn) across all reaches. There was no significant restoration effect on NO3-N spiraling across reaches. However, there was a significant canopy cover effect on NO3-N spiraling, and directly comparing paired sets of unrestored-restored reaches showed that restoration does affect NO3-N spiraling after accounting for other environmental variation. Furthermore, there was a change in GPP:ER seasonality, with restored and open-canopied reaches exhibiting higher GPP:ER during summer. The restoration effect, though, appears contingent upon altered canopy cover, which is likely to be a temporary effect of restoration and is a driver of multiple ecosystem services, e.g., habitat, riparian nutrient processing. Our results suggest that decision-making about stream restoration, including evaluations of nutrient benefits, clearly needs to consider spatial and temporal dynamics of canopy cover and tradeoffs among multiple ecosystem services. Here we provide the raw dissolved oxygen, temperature, li
Nitrogen cycling, soil properties and infiltration rates along a topographic gradient in lawns in Baltimore County, Maryland
The aim of this research was to examine how topography and homeowner fertilizer practices affected soil and hydrologic properties of residential lawns to determine if there are locations within lawns that have the potential to act as hotspots of nitrogen transport during rain events. This data set contains measurements of saturated infiltration rates, sorptivity, soil moisture, soil organic matter, pH, soil nitrate, soil ammonium, denitrification potentials and limiting factors, and nitrogen mineralization rates from fertilized and unfertilized residential and institutional lawns. Study lawns were located at homes of people who agreed to volunteer their lawn for the study from a door knocking campaign. Four sampling houses were located in an exurban neighborhood in Baisman Run. Five sampling houses were located in a suburban neighborhood in Dead Run. Two sampling locations on institutional lawns were located at University of Maryland Baltimore County. At the exurban study houses and institutional lawns sites,we identified one hillslope to conduct sampling on. At the Dead Run houses we identified one hillslope on the front yard and one in the backyard as there were distinct locations that were not present in the exurban neighborhood. In total we sampled on 16 hillslopes. At each hillslope, we identified the top, toe and swale locations. At each hillslope location, we selected three sampling locations along a transect (maximum 10 meters in length; total of 144 sampling locations). At each sampling location we ran a Cornell Sprinkle Infiltrometer to measure sorptivity and saturated infiltration rates. Volumetric water content was measured before and after infiltrometer runs with a Field Scout TDR 300 with 7.5 cm rods. In addition, at each sampling location we took two soil cores to 10 cm depth, and combined and homogenized the two cores for that sampling location for a total of 144 soil samples. Soil cores were stored on ice in the field, and then stored at 4°C in the
Baltimore Ecosystem Study: Forest Cover in the Gwynns Falls watershed from 1914 to 2004
Landscape structure in the Eastern US experienced great changes in the last century with the expansion of forest cover into abandoned agricultural land and the clearing of secondary forest cover for urban development. In this paper, the spatial and temporal patterns of forest cover from 1914 to 2004 in the Gwynns Falls watershed in Baltimore, Maryland were quantified from historic maps and aerial photographs. Using a database of forest patches from six times—1914, 1938, 1957, 1971, 1999, and 2004—we found that forest cover changed, both temporally and spatially. While total forest area remained essentially constant, turnover in forest cover was very substantial. Less than 20% of initial forest cover remained unchanged. Forest cover became increasingly fragmented as the number, size, shape, and spatial distribution of forest patches within the watershed changed greatly. Forest patch change was also analyzed within 3-km distance bands extending from the urban core to the more suburban end of the watershed. This analysis showed that, over time, the location of high rates of forest cover change shifted from urban to suburban bands which coincides with the spatial shift of urbanization. Forest cover tended to be more stable in and near the urban center, whereas forest cover changed more in areas where urbanization was still in process. These results may have critical implications for the ecological functioning of forest patches and underscore the need to integrate multi-temporal data layers to investigate the spatial pattern of forest cover and the temporal variations of that spatial pattern. Zhou, W., G. Huang, S. T. A. Pickett, and M. L. Cadenasso. 2011. 90 Years of Forest Cover Change in an Urbanizing Watershed: Spatial and Temporal Dynamics. Landscape Ecology 26:645–659. <ulink url="https://doi.org/10.1007/s10980-011-9589-z">https://doi.org/10.1007/s10980-011-9589-z</ulink>.
Baltimore Ecosystem Study: Pharmaceutical concentrations for core sites in Gwynns Falls and Baisman Run
Water samples from one year of weekly samples at the Baltimore Ecosystem Study core stream sites were analyzed to measure concentrations of 92 different pharmaceutical concentrations. Note that none of the sites sampled in this dataset receive effluent from wastewater treatment plants (a common source of pharmaceutical contamination). In Baisman Run, sewage is treated by onsite systems, while in the Gwynns Falls watershed, sewage is piped across the watershed boundary and treated elsewhere.
Georectified Mosaic of Aerial Images of Baltimore City in 1927
Landscape analyses are typically done using spatially explicit color aerial imagery. However, working with non-spatial black and white historical aerial photographs presents several challenges that require a combination of techniques and approaches. We analyzed 93 aerial images covering 544 km2 (210 mi2) including all of Baltimore City, and an area immediately adjacent to the city known at the time as the Metropolitan District of Baltimore County. The images were taken from a biplane between October 1926 and February 1927. High-resolution scans were georeferenced and georectified against modern satellite imagery of the area and then combined to create a single raster mosaic. This process converted the images from a disparate set of photographs into a spatially explicit GIS data set that can be used to observe changes in land patches over time—and ultimately integrated with other long-term social, economic, and ecological data.
Baltimore Ecosystem Study: Loss of Phylogenetic Diversity under Landscape Change
Habitat alteration and destruction are a primary driver of biodiversity loss. There is a plethora of research documenting similarly strong patterns of decline across ecosystem types and spatial scales. However, evolutionary dimensions remain largely unexplored in many systems. For example, little is known about how habitat alteration/loss can lead to phylogenetic deconstruction of ecological assemblages at the local level. That is, while species loss is evident, are some lineages favored over others? Using a long-term dataset of a globally, ecologically important guild of invertebrate consumers, stream leaf “shredders,” we created a phylogenetic tree of the taxa in the regional species pool, calculated mean phylogenetic distinctiveness for > 1000 communities spanning > 10 y period, and related species richness, phylogenetic diversity and distinctiveness to watershed-scale impervious cover. Using a combination of changepoint and compositional analyses, we learned that increasing impervious cover produced marked reductions in all three measures of diversity, and in particular, aid in understanding both phylogenetic diversity and average assemblage phylogenetic distinctiveness. Our findings suggest that, not only are species lost when there is an increase in watershed urbanization, as other studies have demonstrated, but that those lost are members of more distinct lineages relative to the community as a whole.
Baltimore Ecosystem Study: Code for calculations of annual pharmaceutical loads at Gwynns Falls Carroll Park
Code for analyses presented in: Fork, M.L., J. Fick, A.J. Reisinger, and E.J. Rosi. "Dosing the coast: Leaking sewage infrastructure delivers large annual loads and dynamic mixtures of pharmaceuticals to urban rivers." In press at Environmental Science and Technology. Two markdown files contains code to pre-process other data and to analyze grab samples from BES streams collected weekly from 2 Nov 2017 through 15 Nov 2018 and analyzed for 92 target pharmaceuticals. Data and methods are available via EDI at https://doi.org/10.6073/pasta/36453abc14ce8d6a33711231fdee9792. Briefly, the analyses here: A) examine spatial and temporal variability in pharmaceutical detections and concentrations among 7 BES watersheds, and B) combine measured concentrations at the watershed outlet (GFCP) with USGS streamflow data to estimate annual loads of pharmaceuticals by resampling or by interpolating concentrations over the discharge record.
Green stormwater infrastructure projects voluntarily installed in Baltimore City through 2019
Much of the green stormwater infrastructure (GSI) in Baltimore, Maryland, USA, has been installed voluntarily by nonprofits and community groups, yet no comprehensive record of these installations previously existed. We worked with nonprofit stakeholders and Baltimore’s Department of Public Works to compile such a record, using both information provided by these agencies and publicly available data sources such as annual reports and newspaper articles. This dataset includes all voluntary green stormwater infrastructure projects that we were able to identify by the end of 2019, with the first known installation completed in 2001. The dataset includes two data tables, one with project-level information, and one with the locations of individual GSI facilities included in each project.
Baltimore Ecosystem Study: Lawn productivity 2006-2007
Urban grasslands cover large land areas in human-dominated landscapes, but little is known about how these landscapes cycle carbon (C). In this study, we examine turfgrass biomass and productivity at thirty-three urban grassland sites within the Gwynns Fall watershed (Baltimore, MD). These sites are characteristic of residential conditions in the region and were selected to provide contrasts in urban ecosystem structure (density of coarse vegetation and built structures) as well as historical (pre-development) land use. Aboveground net primary productivity (ANPP) was measured as the sum of clipping production plus stubble, thatch, and moss production. This work provides context for understanding the impact of urban expansion on regional ecosystem C dynamics and identifies specific needs related to standardized methods for measuring turfgrass ANPP in urban grassland systems.
Baltimore City Passenger Railway Co. facade
"The Baltimore City Passenger Railway Company began operation during 1859 with horse-drawn carriages. Their 1893 car barn, with BCP shingles still attached, at the corner of McCulloh Street and Cloverdale Road is sparsely documented. The other side faces Madison Avenue along which the company's White Line cable cars operated during the 1890s. The building, modified from its more ornate original architecture, saw rail transport use until 1948." http://www.trainweb.org/oldmainline/misc1.htm Created using 257 images taken with a DJI Mavic Mini and processed in Metashape. Source: Objaverse 1.0 / Sketchfab
Rowhouses on 29th St. Baltimore (Part 2)
5-19 West 29th Street rowhomes are in the process of demolition by Johns Hopkins University (JHU). These rowhomes existed in the Charles Village neighborhood for 111 years. They were designed by John R. Forsythe and constructed by James Miller. JHU acquired these seven houses over a 20-year period and the condition of the homes have severely deteriorated over the years. Currently, the University plans on preserving the four trees on the lot and the remaining area will be a grassy field. [Part 1: Whole structure](https://bit.ly/3ytMgp3) [Part 3: Quater of the structure](https://skfb.ly/ouxID) 656 images shot with a DJI Air 2  Sources: [Baltimore Brew ](https://bit.ly/37xnlG3) [Baltimore Fish Bowl ](https://bit.ly/3ysKJzy) Source: Objaverse 1.0 / Sketchfab
Alex. Brown & Sons Building, Baltimore
Another survivor of the 1904 Great Baltimore Fire is the Alex. Brown and Sons Company building. Built in 1901 for Alex Brown and Sons, the oldest investment banking firm in the United States. The architecture firm Parker and Thomas designed the building, and the stained-glass dome inside is thought to be the work of Gustave Baumstark. This Beaux-Arts style building retains much of its elaborate, impressive marble and bronze interior and stained glass dome after the fire. The building is currently up for lease after being converted to a white tablecloth restaurant in 2019. The former restaurant closed down due to the COVID-19 pandemic in May of 2020.  Building after the Baltimore Fire  Interior image by Meredith Herzing Site: 135 East Baltimore Street Mesh generated using 470 Images on a DJI Mavic Air 2 Sources: [National Register of Historic Places](https://bit.ly/3Ioh25P), [Baltimore Magazine ](https://bit.ly/3uF5R2T) Source: Objaverse 1.0 / Sketchfab
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.