cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6073/pasta/19a91b19dbba690030388e4e67be49e7
title: Mapped Trees in CRUI Land Use Project at Harvard Forest 1996-2006

description: Numerous variables related to land use disturbance and recovery processes influence forest composition, structure, and growth. We measured forest communities in six sites that were formerly plowed, pastured, or continuously forested woodlots in Prospect Hill to test predictions about species composition, stand structure, and productivity in response to agricultural land use legacies.
 A permanent 30 x 50 m plot gridded in 5 x 5 m sub-plots was established in each of the 6 sites. All trees at least 2.5 cm DBH (diameter at breast height, 1.3 m) were mapped visually in the field, marked with an aluminum tag, and their DBH recorded in summer 1996. Individual boles of multi-stemmed trees were measured separately and a composite single DBH was calculated. Standing dead trees were also mapped and their DBH recorded as well. The 1996 data were used to determine above ground woody biomass using allometric equations for individual trees.
 The permanent plots were re-surveyed ten years later in fall 2006. The status of each tree mapped in 1996 was recorded (alive, dead standing, dead fallen, forked) and DBH’s were re-measured. Additional trees that grew across the 2.5 cm DBH threshold during the ten-year period were mapped and their DBH’s measured. Composite diameters and above ground woody biomass were determined for forked trees as in 1996.
 The 2006 re-measurements were used to analyze changes in species composition, stand structure (density, diameter distribution), and mortality patterns among species and size classes, and to calculate net changes in above ground woody biomass across the ten-year period.
DOI: 10.6073/pasta/b385ff4efb155ac21ec5cc1757f472b2
title: Microclimate in CRUI Land Use Project at Harvard Forest 1997

description: Understory microenvironmental patterns are strongly influenced by both the forest community and substrate, which are in turn affected by site factors, disturbance history and recovery processes. We measured ground-level microclimates across the growing season as part of a multi-faceted study of soil-plant-atmosphere interactions in sites with different agricultural land-use legacies (formerly plowed, formerly pastured, permanent woodlots) in Prospect Hill.
 A permanent 30 x 50 m plot was established in each of six sites (2 per land use category) and gridded into 5 x 5 m sub-plots. Fifteen microclimate stations were used to measure photosynthetic photon flux (PPF, umol m-2 s-1, LI-190 quantum sensor, Li-Cor, Inc), soil temperature (107B thermistor, Campbell Scientific, Logan, Utah), and air temperature (107 thermistor, Campbell Scientific, Logan, Utah) at 5 locations each in three sites simultaneously. PPF and air temperature were measured at 50 cm, while soil temperature was measured 5 cm. The central sample station was located in the center (sub-plot D6) of the 30 x 50 m grid and four additional stations were positioned 10 m from the central station in the cardinal directions. In addition to the variables described above, relative humidity (%, 207 air temperature/relative humidity probe, Campbell Scientific, Logan, Utah) was measured at 50 cm at the central station.
 All sensors were connected to a Campbell Scientific 23X datalogger and sampled continuously every 10 sec and averaged every 10 minutes for 5 days at a time. The stations were switched between two sets of sites (P1-S2-W2 followed by P2-S1-W1) at the end of every week, so the data record for any one site includes alternate weeks. Measurements were made during April through September, 1997. The data archived here are daily means per variable per station. Missing records are due to inclement weather, while blank fields represent occasional sensor or datalogger connection problems.
DOI: 10.5281/zenodo.10277815
title: SURGICAL TREATMENT AND DIAGNOSIS OF IATROGENIC DAMAGE TO THE MAIN BILY DUCTS
DOI: 10.5281/zenodo.10277816
title: SURGICAL TREATMENT AND DIAGNOSIS OF IATROGENIC DAMAGE TO THE MAIN BILY DUCTS
DOI: 10.5281/zenodo.10277831
title: DIAPEUTIC METHODS FOR STUDYING ECHINOCOCCECTOMY FROM THE LIVER
DOI: 10.5281/zenodo.10277832
title: DIAPEUTIC METHODS FOR STUDYING ECHINOCOCCECTOMY FROM THE LIVER
DOI: 10.6073/pasta/2bd68676c8861ce85424f1ab92a60ca7
title: Herbaceous Stratum Sunfleck Regimes in CRUI Land Use Project at Harvard Forest 1998

description: Numerous variables related to land use disturbance and recovery processes can influence forest understory irradiance regimes. In addition to season-long measurements of herbaceous stratum microclimates (data archived separately), we explored the degree to which differences in forest community composition and structure generate differences in near-ground sunfleck regimes in our six land use sites (2 plowed, 2 pastured, 2 permanent woodlot). Considerable research has shown that photosynthetic responses to fluctuating irradiance cannot be predicted accurately from steady-state gas-exchange measurements, and that sunflecks may account for both a large fraction of total daily photon fluence and net carbon assimilation by plants in the herbaceous stratum of moist forests. We measured clear-day irradiance patterns to test predictions about how sunfleck frequency, duration, and brightness should vary across the three land-use legacies. We also wished to document sunfleck regimes as part of a companion study on photosynthetic responses by herb and tree species to sunflecks.
 Twenty-three quantum sensors (Li-190, Li-Cor, Inc., Lincoln, NE) were placed at regularly-spaced interior intersection points across the 30 m x 50 m permanent plot grid in each land use site. The sensors were mounted on stakes 50 cm above ground, leveled, and attached to a Campbell Scientific CR23X datalogger. Photosynthetic photon flux (PPF) values were recorded at all 23 microsites every 6 seconds for 3.5-4.5 hours in the morning (8:00-11:30+ a.m. EST) on one clear day per site in July and August 1998. Using custom software and a sunfleck definition threshold of 100 umol m-2 s-1, sunfleck events were extracted for each microsite across the sampling period and the following were calculated for each fleck event: number of fleck events per hour, sunfleck duration (sec), duration of the shade period prior to the sunfleck (sec), mean PPF across the sunfleck event, and peak PPF during the sunfleck. Descrtiptive statistics calculated across the 23 sample locations per site are reported in this archived data set.
DOI: 10.6073/pasta/fb46adf4b5acfffb3369b18c350fc4eb
title: Tree Seedlings in CRUI Land Use Project at Harvard Forest 1996

description: Forests recovering from agricultural legacies differ in many ways that influence tree seed dispersal and seedling establishment patterns. We recorded the number of seedlings (less than 0.5 m tall) of all tree species on a 1 x 1 m resolution across six land use legacy sites (2 plowed, 2 pastured, 2 permanent woodlot) in summer 1996 to test several predictions about seedling abundance, diversity, and dispersion patterns, and their relationships to forest structure, microclimates, and soil resources.
DOI: 10.6073/pasta/92077ae9b05ea88b1c7eba54295cb07b
title: Herbaceous Community Composition in CRUI Land Use Project at Harvard Forest 1996

description: Patterns of vascular plant species richness were investigated in six land use legacy sites (2 formerly plowed, 2 formerly pastured, and 2 permanent woodlot) in Prospect Hill to test predictions about the effects of disturbance, light and soil resources, and forest floor environmental heterogeneity on community composition.
 The occurrence of vascular taxa was recorded in each of the 60 5 m x 5 m contiguous plots within the 30 m x 50 m permanently gridded study plot in each land use legacy site in June 1996. Identification was made to species in most cases.
 Woodlots showed higher average species richness at the site level (53) than either pastured (52 species) or plowed (49) sites. However woodlots also show greater spatial variation in richness at the 5 m x 5 m resolution than either the plowed or pastured sites (in that order) as represented by the range, standard deviation, and coefficient of variation. Seasonally-averaged light levels at 50 cm are approximately twice as high in the plowed and pastured sites as in the woodlots, but the woodlots show significantly greater soil organic matter, carbon, nitrogen and water-holding capacity than the post-agricultural sites. These results suggest that soil resources may be more important than light in fostering higher herbaceous stratum richness. However, woodlot richness is also affected by the presence of taxa that are slow to re-colonize heavily disturbed sites (e.g., Epigaea repens) and to distinctive microsites that are less common in the plowed or pastured sites in the Harvard Forest system (e.g., exposed boulders). The greater spatial variation in woodlot richness is strongly influenced by both substrate diversity and by scattered hemlock trees, which substantially depress the herb stratum in localized patches.
DOI: 10.6073/pasta/8efd29ee9453903795c4860612b46da8
title: Soil Properties in CRUI Land Use Project at Harvard Forest 1995-1998

description: Soil properties and processes were evaluated on three types of colonial agricultural land-use - plowing, pasturing, and selective tree removal in a woodlot that ceased in the mid to late 1800s. Plowing, the most intensive type of agricultural disturbance, mixes soil to a depth of approximately 15cm, homogenizing the soil resources and likely reducing diversity in microenvironments. Removing trees and replacing them with grasses for pasture decreases the organic matter amount and types of inputs to the system, decreasing resource diversity. Woodlots, altered by selective and chronic tree removal, would have more limited decreases in resources and microenvironments. This study defines forest soil legacies using data from plots located at Harvard Forest in both amounts of soil resources and spatial heterogeneity of those soil resources. We found that for several soil parameters measured on previously cultivated and preciously pastured lands at the Harvard Forest, a legacy exists in the mineral soil, but the forest floor appears to have largely recovered from the agricultural disturbance. Parameters examined included soil mass, bulk density, organic matter content, pH, C, N, nitrogen mineralization and nitrification, Ca, Mg, K, and P.
DOI: 10.5281/zenodo.10277859
title: DIAPEUTIC METHOD OF TREATMENT OF VARICOCELE
DOI: 10.5281/zenodo.10277860
title: DIAPEUTIC METHOD OF TREATMENT OF VARICOCELE
DOI: 10.6073/pasta/3c34d77f912c138075ea37523e7ce40b
title: Soil Respiration in CRUI Land Use Project at Harvard Forest 1997

description: Soil properties and processes were evaluated on three types of colonial agricultural land-use - plowing, pasturing, and selective tree removal in a woodlot that ceased in the mid to late 1800s. Plowing, the most intensive type of agricultural disturbance, mixes soil to a depth of approximately 15cm, homogenizing the soil resources and likely reducing diversity in microenvironments. Removing trees and replacing them with grasses for pasture decreases the organic matter amount and types of inputs to the system, decreasing resource diversity. Woodlots, altered by selective and chronic tree removal, would have more limited decreases in resources and microenvironments. This study examined soil surface (at 10cm above the soil surface) CO2 concentrations and soil respiration at the land use sites. Soil respiration and surface CO2 concentrations were highest in the woodlot sites and lowest in the formerly plowed sites.
DOI: 10.5281/zenodo.10277877
title: RESULTS OF SURGICAL AND DIAPEUTIC TREATMENT OF VARICOCELE
DOI: 10.5281/zenodo.10277876
title: RESULTS OF SURGICAL AND DIAPEUTIC TREATMENT OF VARICOCELE
DOI: 10.6073/pasta/b307cd3005dc90b5ff28abb7e74cf394
title: Hydrocarbon Concentrations at Harvard Forest EMS Tower 1992-2001

description: Hydrocarbons are products of incomplete combustion and also emitted by vegetation. Hydrocarbons are important precursors for photochemical ozone formation. A system to quantify concentrations of several low-molecular weight hydrocarbons was installed at the EMS tower in the summer of 1992. The measurements were intended to help resolve questions about the potential reactivity in rural New England atmosphere and identify and quantify biogenic hydrocarbon emissions.
DOI: 10.6073/pasta/2e456c7efe5ccd93d02b263845902baa
title: Organic and Inorganic Nitrogen Uptake by Sarracenia Purpurea at Harvard Forest and Fort Albany ON 2007

description: The nitrogen-limited carnivorous pitcher plant Sarracenia purpurea and its associated detritus-based food web is a model system for studying plant nutrient dynamics. We tested if S. purpurea can directly take up intact amino acids and compared uptake of organic and inorganic forms of nitrogen (N) across a gradient of N deposition. At sites in Canada and the United States, individual pitchers with complete or incomplete food webs were fed U-13C-15N-glycine, U-13C-15N-phenylalanine and 15NH415NO3 individually and in mixture. Plants took up intact amino acids. Acquisition of each N form provided in isolation exceeded uptake of the same form in mixture. At the high deposition site, uptake of 15N from amino acids was higher than uptake of 15N from inorganic nitrogen. At the low deposition site, uptake of 15N from all three forms of N were similar. Completeness of the associated food web had no effect on 15N uptake. By taking up intact amino acids, Sarracenia purpurea can short-circuit the inorganic N cycle, thus minimizing potential bottlenecks in N availability that result from the plant’s reliance for nitrogen mineralization on a seasonally reconstructed food web operating on infrequent and irregular prey capture.
DOI: 10.6073/pasta/e806fb15d8f6c5f16e8b4366c7306be4
title: Soil Respiration at Harvard Forest HEM and LPH Towers 1996-2007

description: Soil respiration, including both CO2 produced during decomposition of organic matter in soil and surface litter, and CO2 produced during respiration of living roots, is a major component of forest-atmosphere carbon exchange, typically comprising 60 to 80% of whole-forest respiration. Soil respiration data can explain a major part of a forest ecosystem’s response to changing climate, and help in evaluating the accuracy of nighttime eddy flux data as estimates of whole-ecosystem respiration measurements. Soil respiration in the footprint areas of the Harvard Forest Hemlock and Little Prospect Hill eddy flux towers has shown generally similar responses to soil temperature and precipitation as soil respiration near the EMS flux tower (see data set HF006), but also some differences. Soil respiration at the Hemlock tower site has been lower than at the other tower sites during very wet summer weather, but higher during dry summer periods. Average estimated annual total soil respiration has been close to the same for all three tower footprint areas, however. There has been some evidence of lower soil respiration in the parts of the Little Prospect Hill tower footprint with lowest soil moisture (those with a high slope position, 100 m from the tower), as compared with other sites during very dry summer periods, but such periods have been very rare during the period of data collection. Soil respiration measured near the Little Prospect Hill tower in summer has also been higher than ecosystem respiration as estimated from nighttime carbon flux measured by an eddy covariance system. This indicates that during some nighttime periods, CO2 is being removed from the volume of air below the eddy flux system by a route other than through the top of the forest canopy near the flux tower, possibly by downslope advection, even under conditions when it initially appeared that atmospheric turbulence was high enough to prevent removal of CO2 by these other mechanisms.
DOI: 10.6073/pasta/37c10fe6e97e9d6deace45e8cba3fc13
title: Tree Growth and Above-Ground Biomass at Harvard Forest HEM and LPH Towers since 2001

description: Tree diameter (“dbh”) at 1.25 m above ground were recorded and stainless steel dendrometer bands for trees above 10 cm dbh were attached. Increases in tree diameter were calculated from increases in the distance between holes punched in the dendrometer bands. Tree diameters and diameter increases were used to estimate aboveground biomass and aboveground carbon storage in order to characterize the forest at the flux tower sites, and to quantify the amount of carbon being stored aboveground annually.
DOI: 10.6073/pasta/de622206c24b26c32f51d2a482998fba
title: Leaf Area Index at Harvard Forest HEM and LPH Towers since 1998

description: Leaf area index (LAI) measurements are made to detect changes in forest leaf area that are important in understanding forests’ carbon dioxide (CO2) uptake and water use. Measurements of LAI in different forest types are useful understanding differences between forests in CO2 uptake and water use, while variation in LAI in the same forest type over time helps to explain interannual variation and long-term trends in carbon storage and water use. Within a single year, especially for deciduous forests, seasonal changes in LAI are very important in determining the forest’s cycle of CO2 uptake and water use. LAI measurements at Harvard Forest were begun in the old-growth hemlock stand in 1998 in order to understand and develop a predictive model for its carbon exchange, and were begun at the Little Prospect Hill site in 2002 to better understand CO2 uptake and carbon storage at this site, which were measured by the eddy-covariance method beginning in 2002. Due to a lack of personnel, multiple annual measurements of LAI to examine seasonal change in leaf area did not begin until 2007.
DOI: 10.5281/zenodo.10143263
title: Simulations of METTL3/METTL14 in complex with SAM+ADE or SAH+m6ADE

description: The current dataset contains a set of MD simulation trajectories for the METTLL3/METTL14 heterodimer in complex with the set of (co-)substrates or (co-)products SAM+ADE or SAH+m6ADE respectively. Each compressed file contains 16 independent trajectories of 500 ns each. The trajectories are written in .xtc format, and therefore a .pdb file is needed to read them. The parameters file ("md_input.mdp") is also provided. The current dataset also contains the PLUMED file that was used for the DFTB3/MM metadynamics simulations ("plumed.dat").
DOI: 10.5281/zenodo.10143264
title: Simulations of METTL3/METTL14 in complex with SAM+ADE or SAH+m6ADE

description: The current dataset contains a set of MD simulation trajectories for the METTLL3/METTL14 heterodimer in complex with the set of (co-)substrates or (co-)products SAM+ADE or SAH+m6ADE respectively. Each compressed file contains 16 independent trajectories of 500 ns each. The trajectories are written in .xtc format, and therefore a .pdb file is needed to read them. The parameters file ("md_input.mdp") is also provided.
DOI: 10.5281/zenodo.10277884
title: Simulations of METTL3/METTL14 in complex with SAM+ADE or SAH+m6ADE

description: The current dataset contains a set of MD simulation trajectories for the METTLL3/METTL14 heterodimer in complex with the set of (co-)substrates or (co-)products SAM+ADE or SAH+m6ADE respectively. Each compressed file contains 16 independent trajectories of 500 ns each. The trajectories are written in .xtc format, and therefore a .pdb file is needed to read them. The parameters file ("md_input.mdp") is also provided. The current dataset also contains the PLUMED file that was used for the DFTB3/MM metadynamics simulations ("plumed.dat").
DOI: 10.6073/pasta/e0196760e1589007f3cf6156faa145df
title: Litterfall at Harvard Forest HEM and LPH Towers since 2002

description: We measure the dry mass and estimated carbon content of leaves and fine twigs that abscise each year. These data are used to quantify one component of annual net primary productivity (ANPP), an important measure of ecosystem productivity and carbon cycling. Leaf area index (LAI) can also be estimated from these data, if area-to-mass ratios are calculated for leaves of each species. This was done for 2002 and 2003 leaf litterfall at the Little Prospect Hill (LPH) site. The fraction of total leaf mass or estimated total leaf area that is formed by leaves of each species also shows the species composition of the forest canopy. If repeated over many years, these data can indicate whether the forest canopy species composition is changing over time.
DOI: 10.6084/m9.figshare.24757398
title: Archaeological and Anthropological Evidence of the Arrival of Indo-Aryans in the Indian Subcontinent

description: Compilation of Archaeologists' opinions on AMT<br>
DOI: 10.6084/m9.figshare.24757398.v1
title: Archaeological and Anthropological Evidence of the Arrival of Indo-Aryans in the Indian Subcontinent (1).pdf

description: Compilation of Archaeologists' opinions on AMT<br>
DOI: 10.6084/m9.figshare.24757398.v2
title: Archaeological and Anthropological Evidence of the Arrival of Indo-Aryans in the Indian Subcontinent

description: Compilation of Archaeologists' opinions on AMT<br>
DOI: 10.6073/pasta/f90d0380e1b37f895b60598c669c8148
title: Soil Water Content at Harvard Forest HEM and LPH Towers 1998-2007

description: Water content of the top 20 cm of soil was measured using 1.5 inch diameter soil cores. Soil water content is of particular interest and importance in explaining patterns of soil respiration (including root respiration) and ecosystem respiration, 60 to 75% of which occurs below the ground surface at Harvard Forest. Soil water content in deciduous forest near the Little Prospect Hill Forest was in general found to be more variable than near the Hemlock tower. One influence contributing to this is the presence of a water table within 1 m of the soil surface near the hemlock tower, compared to a water table at unknown depth in the deeply drained soils in most parts of Little Prospect Hill. Relatively low evapotranspiration at the Hemlock tower site during the period when deciduous trees are foliated also contributes to higher water content in soil there, and a relatively thick surface organic layer. These influences tend to maintain soil respiration at higher levels in the hemlock forest during dry summers, but excessive moisture in the soil at the Hemlock site during very wet summers appears to suppress soil respiration.
DOI: 10.5517/ccdc.csd.cc2f6j4b
title: CCDC 2240591: Experimental Crystal Structure Determination

description: Related Article: luguang qi|2023|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc2f6j6d
title: CCDC 2240593: Experimental Crystal Structure Determination

description: Related Article: luguang qi|2023|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc2gw6vf
title: CCDC 2290275: Experimental Crystal Structure Determination

description: Related Article: Christopher M. Pask, Malcolm A. Halcrow|2023|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.