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17 results for “arboretum”
Eastern Redback Salamander Abundance at the Arnold Arboretum 2004-2005
Terrestrial salamanders are significant contributors to the overall vertebrate biomass in a forest (Burton and Likens 1975a). Due to this abundance, they are ecologically important as both predators of soil fauna, and as prey for larger animals such as birds, reptiles, and small mammals (Welsh and Droege 2001). In 1997, the invasive insect pest, hemlock woolly adelgid (Adelges tsugae) or HWA, was discovered on Hemlock Hill at Harvard University’s Arnold Arboretum in Jamaica Plain, Massachusetts. Unfortunately, this infestation has led to the death, decline, and removal of a larger percentage of the eastern hemlock (Tsuga canadensis) trees in this section of the Arboretum. In April 2004, researchers from the Harvard Forest and the Arnold Arboretum began studying the environmental impacts of this disturbance event (HF061). To complement this research twenty-four artificial cover objects (ACOs) were installed in three plots on Hemlock Hill in the summer of 2004 to monitor the relative abundance of eastern red-backed salamanders (Plethodon cinereus) and any other herpetofauna encountered. The timing of the installation permitted an analysis of the effects of a logging treatment conducted in the winter of 2004-2005 on the relative abundance of terrestrial salamanders. Logging had an immediate impact on the relative abundance of eastern red-backed salamanders in both logged plots as seen by an 83 percent decline in the relative abundance of red-backs in plot 1 and a 63 percent decline in plot 2 in the spring following logging versus the fall prior to logging. In the unlogged control plot (plot 3) the relative abundance declined 9 percent in the spring versus the fall. The lower relative abundances in the logged plots were likely due to higher temperatures on the surface of the soil (5.7 deg C) and five centimeters below the soil surface (1.2 deg C), and lower relative humidity on the surface of the soil (3.4%) than in the unlogged plot. By Fall 2005, the relative abundanc
Impacts of Hemlock Woolly Adelgid at the Arnold Arboretum 2004-2007
Hemlock Hill at Harvard University's Arnold Arboretum is located in Jamaica Plain and has long been considered a remnant of the forest primeval in the heart of Boston. Eastern hemlocks have dominated the flanks and crest of this hill for centuries, despite experiencing many past disturbances. Following the 1997 snowstorm, the introduced hemlock woolly adelgid (HWA) was discovered on downed branches. Since the discovery of HWA at the Arboretum, an action committee was formed to develop plans for managing Hemlock Hill to meet the new threat. Over 1800 hemlock trees were tagged, measured for diameter, assigned a crown health rating, and mapped with GPS coordinates. Various chemical and biological control treatments were attempted to control the spread of HWA at the arboretum, with mixed success. From 1998 to 2002, 263 trees have died or were removed due to poor health. Of the remaining 1600+ trees, 70% are rated as being in poor condition. Since this is a heavily used portion of the Arboretum, which is part of the Boston Parks Department, the decision has been made to remove many of the dead and dying trees to reduce risks posed to the general public by falling limbs. This unfortunate turn of events provides us with an unusual opportunity to examine the environmental impacts of hemlock death and hemlock removal in an urban environment, including soil nutrient cycling, microclimate changes, and vegetation succession, especially the spread of invasive species. During 2004, six 15 x 15 m plots were fenced off, and baseline data on soil nutrient cycling, microclimate, and vegetation information was collected from each. Analyses of these baseline data are underway. Hemlocks are currently being removed from 4 plots, and 2 will remain untouched as control plots. Slash in the cut plots is either being chipped and left on site or removed so that we can investigate what impact these post-cut inputs have on ecosystem and vegetation trajectories. We will continue with data collect
Leslie Holdridge arboretum tree census, La Selva Research Station, Organization for Tropical Studies, Sarapiquí, Heredia, Costa Rica, 1972-2017.
This database is a collection of dendrometric and structural measurements for all the trees in the arboretum, it was compiled through the assessment of 10 census from 1972 to 2017 by O. Vargas and E. Castro for the Organization for Tropical Studies. The 3.5-hectare Holdridge Arboretum is located at La Selva Research Station. Leslie R. Holdridge, the original owner of the property, created the arboretum in 1968. Initially, it was a small cacao grove with an exceptionally rich overstory of native shade trees. To facilitate research in the arboretum, staff later removed the cacao. In 1970, Gary Hartshorn continued to plant seedlings of many native tree species. OTS continues to plant, tag, and measure trees. OTS maintains the arboretum by regular mowing and pruning to facilitate safe access. Courses, natural history visitors, students, and researchers use the arboretum for a wide range of observational studies, manipulations, dendrological practices, and taxonomy classes.
Linked collectors and determiners for: Morton Arboretum - Vascular Plants.
Natural history specimen data linked to collectors and determiners held within, "Morton Arboretum - Vascular Plants". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/70e448fa-98b0-4ae7-a7a4-404f6175e7c9">https://bionomia.net/dataset/70e448fa-98b0-4ae7-a7a4-404f6175e7c9</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/70e448fa-98b0-4ae7-a7a4-404f6175e7c9">https://gbif.org/dataset/70e448fa-98b0-4ae7-a7a4-404f6175e7c9</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Morton Arboretum - Lichens.
Natural history specimen data linked to collectors and determiners held within, "Morton Arboretum - Lichens". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/fe4d614a-8796-4c12-93c7-ae6ad4f2741d">https://bionomia.net/dataset/fe4d614a-8796-4c12-93c7-ae6ad4f2741d</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/fe4d614a-8796-4c12-93c7-ae6ad4f2741d">https://gbif.org/dataset/fe4d614a-8796-4c12-93c7-ae6ad4f2741d</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Morris Arboretum of University of Pennsylvania.
Natural history specimen data linked to collectors and determiners held within, "Morris Arboretum of University of Pennsylvania". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/fcab85b5-5341-41b3-aa59-24432ea805b2">https://bionomia.net/dataset/fcab85b5-5341-41b3-aa59-24432ea805b2</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/fcab85b5-5341-41b3-aa59-24432ea805b2">https://gbif.org/dataset/fcab85b5-5341-41b3-aa59-24432ea805b2</a>. Formatted as a Frictionless Data package.
Temperate woody angiosperm (Acer, Ilex, Magnolia) drought tolerance (TLP, xylem embolism) data, Arnold Arboretum and Scott Arboretum, MA/PA, USA, 2019-22
Understanding the capacity of temperate trees to acclimate to limited soil water has become essential in the face of increasing drought risk due to climate change. We documented seasonal – or phenological – patterns in acclimation to water deficit stress in stems and leaves of tree species spanning the angiosperm phylogeny. Over three years of field observations carried out in two U.S. arboreta, we measured stem vulnerability to embolism (36 individuals of 7 Species) and turgor loss point (119 individuals of 27 species) over the growing season. We also conducted a growth chamber experiment on 20 individuals of one species to assess the mechanistic relationship between soil water restriction and acclimation. In three quarters of species measured, plants became less vulnerable to embolism and/or loss of turgor over the growing season. We were able to stimulate this acclimatory effect by withholding water in the growth chamber experiment. Temperate angiosperms are capable of acclimation to soil water deficit stress, showing maximum vulnerability to soil water deficits following budbreak and becoming more resilient to damage over the course of the growing season or in response to simulated drought. The species-specific tempo and extent of this acclimatory potential constitutes preadaptive climate change resilience.
Model data created by MANDIFORE using ED2 simulating structure and biomass under harvest legacies and climate change as the Morton Arboretum, IL, USA, 2007-2099"
The data in this archive was used to investigate the long-term impacts of harvest-based management strategies on structure and resistance to climate-induced biomass loss using a process-based ecosystem model and an ensemble of climate change drivers in a midwestern USA hardwood forest. The model used was a modified version of the Ecosystem Demography model version 2.1 (ED2) where trees could be grouped based on plant functional type and size allowing for different management regimes to be simulated. The simulation site was an actively managed mid-continental North American temperate deciduous forest at The Morton Arboretum (TMA) near Chicago, USA. The initial conditions (composition and structure) of the forest simulated were initialized using field survey data from 487, 8.92-m radius plots collected in 2018. Different levels of tree removal based on traditional forestry management techniques for temperate deciduous forests were simulated and evaluated for their effects on forest structure and resistance to drought induced mortality for the period of 2006 to 2100. Model initialization and spin up occurred from 2006-2020 at which point management was simulated for the period of 2020-2024 before running without management for 2024 to 2100. Fourteen CMIP5 GCMs were used for meteorological drivers for 2006 to 2100 for both RCP4.5 and RCP 8.5 warming scenarios. CO2 concentration was held constant at 380 ppm over the simulation period. Four management regimes were simulated for each of these GCM-RCP pairings leading to a total of 112 distinct model runs. The four management regimes were group selection, shelterwood, understory thinning and an additional no management scenario served as a control. Data in this archived is separated into the 112 distinct model runs.
Complete Dataset links and GPS timestamps and locations of our recordings at the Morton Arboretum.
<p>This repository contains all the data to reproduce the experiments conducted in the research article:<br><br>"Acoustic fingerprints in nature: A self-supervised learning approach for ecosystem activity monitoring"</p> <p>The complete dataset for reproducing the experiments conducted in this research are available at<a href="https://web.lcrc.anl.gov/public/waggle/datasets/morton_arb.tar"> Complete Morton Arboretum Data</a>.</p> <p>For a sub-sample of the complete version of the dataset, go to the following link: <a href="https://web.lcrc.anl.gov/public/waggle/datasets/morton_arb_small.tar">2021/06/30 study</a></p> <p>This repository also contains GPS timestamps, and GPS locations of our recordings at the Morton Arboretum, an internationally recognized tree-focused botanical garden and research center in Lisle, IL.</p> <p> </p> <p> </p>
Orthophoto mosaics of the Arboretum of the Botanical Garden of Petrozavodsk State University
<p>Orthophoto mosaics of the Arboretum of the Botanical Garden of Petrozavodsk State University</p>
Arnold Arboretum of Harvard University: Arnold Arboretum Photo Gallery
<p></p>https://www.arboretum.harvard.edu/
Linked collectors and determiners for: Hoyt Arboretum Vascular Plant Herbarium.
Natural history specimen data linked to collectors and determiners held within, "Hoyt Arboretum Vascular Plant Herbarium". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/f1537df5-8930-4ba4-afa4-bdd553a8b809">https://bionomia.net/dataset/f1537df5-8930-4ba4-afa4-bdd553a8b809</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/f1537df5-8930-4ba4-afa4-bdd553a8b809">https://gbif.org/dataset/f1537df5-8930-4ba4-afa4-bdd553a8b809</a>. Formatted as a Frictionless Data package.
Hilltop Arboretum Landform Dataset for GRASS GIS
<p><strong>Hilltop Arboretum Dataset for GRASS GIS</strong></p> <p>This geospatial dataset contains raster data for the landform at Hilltop Arboretum, Baton Rouge, Louisiana, USA. This data was collected in an aerial survey with a DJI Phantom 4 Pro drone over Hilltop Arboretum on 12/31/2019 by Brendan Harmon and Josef Horacek. The aerial photographs were processed in Agisoft Metashape using Structure from Motion (SfM) to generate a point cloud, orthophotograph, and digital surface model. The point cloud was processed in CloudCompare to generate a bare earth point cloud. The orthophoto, digital surface model, and bare earth point cloud were imported into GRASS GIS. The bare earth point cloud was interpolated as a digital elevation model using the Regularized Spline with Tension method. The top level directory <em>lousiana_s_spm_hilltop</em> is a GRASS GIS location for the North American Datum of 1983 (NAD 83) / Louisiana South State Plane Meters with <a href="https://epsg.io/26982">EPSG code 26982</a>. Inside the location there are the PERMANENT mapset, a license file, and readme file.</p> <p><strong>Survey</strong></p> <ul> <li>Location: LSU Hilltop Arboretum, Baton Rouge, Louisiana, USA.</li> <li>Drone: DJI Phantom 4 Pro</li> <li>Software: Agisoft Metashape, CloudCompare, GRASS GIS</li> <li>Team: Brendan Harmon and Josef Horacek</li> <li>Date: 12/31/2019</li> <li>GCPs: 10 AeroPoints</li> </ul> <p><strong>Instructions</strong><br> Install <a href="https://grass.osgeo.org/">GRASS GIS</a>, unzip this archive, and move the location into your <a href="https://grass.osgeo.org/grass77/manuals/grass_database.html">GRASS GIS database</a> directory. If you are new to GRASS GIS read the <a href="https://grass.osgeo.org/documentation/first-time-users/">first time users guide</a>.</p> <p><strong>License</strong><br> This dataset is licensed under the <a href="https://opendatacommons.org/licenses/pddl/index.html">ODC Public Domain Dedication and License 1.0 (PDDL)</a> by Brendan Harmon.</p>
Data from: A nuclear DNA barcode for eastern North American oaks and application to a study of hybridization in an Arboretum setting
DNA barcoding has proved difficult in a number of woody plant genera, including the ecologically important oak genus Quercus. In this study, we utilized restriction-site associated DNA sequencing (RAD-seq) to develop an economical single-nucleotide polymorphism (SNP) DNA barcoding system that suffices to distinguish eight common, sympatric eastern North American white oak species. Two de novo clustering pipelines, PyRAD and Stacks, were used in combination with post-clustering bioinformatic tools to generate a list of 291 potential SNPs, 80 of which were included in a barcoding toolkit that is easily implemented using MassARRAY mass spectrometry technology. As a proof-of-concept, we used the genotyping toolkit to infer potential hybridization between North American white oaks transplanted outside of their native range (Q. michauxii, Q. montana, Q muehlenbergii/ Q. prinoides and Q. stellata) among natural forests of locally native trees (Q. alba and Q. macrocarpa) in the living collection at The Morton Arboretum (Lisle, IL, USA). Phylogenetic and clustering analyses suggested low rates of hybridization between cultivated and native species, with the exception of one Q. michauxii mother tree, the acorns of which exhibited high admixture from either Q. alba or Q. stellata and Q. macrocarpa; and a hybrid between Q. stellata that appears to have backcrossed almost exclusively to Q. alba. Together, RAD-seq and MassARRAY technologies allow for efficient development and implementation of a multispecies barcode for one of the more challenging forest tree genera.
Data from Doppler-Wind Lidar (DWL) measurements at Paris – Arboretum (PAARBO) from 2023-07-27 to 2023-09-13 [RAW]
<p>Original data files from DWL measurements at the arboretum de Vallée-aux-Loups (Département 92) in the built-up area in the SW of Greater Paris.</p>
Data from Doppler-Wind Lidar (DWL) measurements at Paris – Arboretum (PAARBO) from 2023-09-13 to 2024-03-05 [RAW]
<p>Original data files from DWL measurements at the arboretum de Vallée-aux-Loups (Département 92) in the built-up area in the SW of Greater Paris.</p>
Data from: A nuclear DNA barcode for eastern North American oaks and application to a study of hybridization in an Arboretum setting
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