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64 results for “Forest plantation”
Throughfall exclusion and fertilization effects on tropical dry forest tree plantations, a large-scale experiment
<p>Across tropical ecosystems, global environmental change is causing drier climatic conditions and increased nutrient deposition. Such changes represent large uncertainties due to unknown interactions between drought and nutrient availability in controlling ecosystem net primary productivity (NPP). Using a large-scale manipulative experiment, we studied for 4 years whether nutrient availability affects the individual and integrated responses of aboveground and belowground ecosystem processes to throughfall exclusion in 30-year-old mixed plantations of tropical dry forest tree species in Guanacaste, Costa Rica. We used a factorial design with four treatments: control, fertilization (F), drought (D), and drought + fertilization (D + F). While we found that a 13 %–15 % reduction in soil moisture only led to weak effects in the studied ecosystem processes, NPP increased as a function of F and D + F. The relative contribution of each biomass flux to NPP varied depending on the treatment, with woody biomass being more important for F and root biomass for D + F and D. Moreover, the F treatment showed modest increases in maximum canopy cover. Plant functional type (i.e., N fixation or deciduousness) and not the experimental manipulations was the main source of variation in tree growth. Belowground processes also responded to experimental treatments, as we found a decrease in nodulation for F plots and an increase in microbial carbon use efficiency 25 for F and D plots. Our results emphasize that nutrient availability, more so than modest reductions in soil moisture, limits ecosystem processes in tropical dry forests and that soil fertility interactions with other aspects of drought intensity (e.g., vapor pressure deficit) are yet to be explored.</p>
Call attenuation data of three frog species in tree plantations and a native forest in southern Brazil
<p><span>Call transmission is influenced by the acoustics of the propagation environment, including vegetation. Thus, forestry monocultures of non-native trees represent artificial environments that could modify call transmission. These monocultures have substituted large areas of the Atlantic Forest in southern Brazil, representing a conservation challenge. Considering this context, we hypothesized that anurans have calls less attenuated in their native environment than in forest plantations. To test it, we performed sound transmission experiments using calls of three anuran species native to southern Brazil: </span><em><span>Boana bischoffi</span></em><span>, </span><em><span>B. leptolineata</span></em><span>, and </span><em><span>Hylodes meridionalis</span></em><span>. We compared sound attenuation between the native forest and forestry monocultures (</span><em><span>Eucalyptus</span></em><span><em> sp</em>. and </span><em><span>Pinus</span></em><span><em> sp.</em> forests), and included distance from the sound source, air temperature, humidity, and vegetation density as co-factors in linear mixed models.</span></p>
Dataset: Limited seed dispersal, allelopathy and unfavorable microclimatic conditions prevent the recovery of oak forests within Eucalyptus plantations
<p>This repository contains the files associated with the following article:</p> <p>Ernesto I. Badano, Pablo Siller-Clavel. Limited seed dispersal, allelopathy and unfavorable microclimatic conditions prevent the recovery of oak forests within <em>Eucalyptus</em> plantations. Published in <em>European Journal of Forest Research</em>.</p> <p>The repository provides an interactive map, optimized for Google Earth, that shows the administrative area of the Park Lázaro Cárdenas del Rio located in the state of Puebla, Mexico (yellow polygon) and the areas covered by plantations of <em>Eucalyptus camaldulensis</em> (red polygons) by the years in which the study was conducted (2009-2011). The areas that are not highlighted within the park correspond to oak forest remnants and some deforested areas. The interactive map also provides the geographic coordinates of the 100 square plots of 1x1 m used to sample the oak seed banks within forest remnants and plantations in 2009 and 2010, as well as the geographic coordinates of the 200 experimental plots located in each of these habitat types. To display this information, click on the corresponding the boxes located in the lateral bar of Google Earth.</p> <p>The data that support the result of the study are provided in Microsoft Excel files. The first of these files (Dataset 01 - Acorn density.xlsx) has a single sheet indicating the number of acorns recorded on 100 square plots of 1x1 m randomly distributed in the understories of forest remnants and plantations. The second file (Dataset 02 - Acorn germination trials.xlsx) has two sheets with the data used to estimate acorn germination rates of <em>Quercus castanea</em> and <em>Quercus laeta</em> in the <em>in vitro</em> and greenhouse germination trials. The third file (Dataset 03 - Field experiment.xlsx) has two sheets, where the first one contains the data used to estimate acorn germination rates and seedling survival of <em>Quercus castanea</em> and <em>Quercus laeta</em> on soil of <em>Eucalyptus</em> plantations and oak forests in these two habitats, and the second one contains the microclimatic data (photosynthetic photon flux density, air temperature, rainfall and volumetric soil water content) measured in plantations and forests.</p>
Throughfall exclusion and fertilization effects on tropical dry forest tree plantations, a large-scale experiment
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Subarctic afforestation: effects of forest plantations on ground-nesting birds in lowland Iceland
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Insect herbivore damages on white spruce growing in plantations and naturally regenerated under-canopy forest stands
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Experimental evaluation of herbicide use on biodiversity, ecosystem services, and timber production tradeoffs in forest plantations
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Call attenuation data of three frog species in tree plantations and a native forest in southern Brazil
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Limited evidence of biodiversity spillover from forest fragments into oil palm plantations in the Amazon
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Tree species richness suppresses red imported fire ant invasion in a subtropical plantation forest
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Promising abundance and composition of forest dwelling anurans in cashew plantations in a tropical semi-evergreen forest landscape
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Input data and model implementation from: How do terrestrial wildlife communities respond to small-scale Acacia plantations embedded in harvested tropical forest?
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Harrison Experimental Forest site, station North plantation, Harrison Experimental Forest, study of diameter at breast height of Pinus palustris (longleaf pine) in units of centimeter on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Harrison Experimental Forest (HAR) contains diameter at breast height of Pinus palustris (longleaf pine) measurements in centimeter units and were aggregated to a yearly timescale.
Harrison Experimental Forest site, station North plantation, Harrison Experimental Forest, study of height of Pinus palustris in units of meter on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Harrison Experimental Forest (HAR) contains height of Pinus palustris measurements in meter units and were aggregated to a yearly timescale.
Harrison Experimental Forest site, station South plantation, Harrison Experimental Forest, study of diameter at breast height of Pinus palustris (longleaf pine) in units of centimeter on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Harrison Experimental Forest (HAR) contains diameter at breast height of Pinus palustris (longleaf pine) measurements in centimeter units and were aggregated to a yearly timescale.
Harrison Experimental Forest site, station South plantation, Harrison Experimental Forest, study of height of Pinus palustris in units of meter on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Harrison Experimental Forest (HAR) contains height of Pinus palustris measurements in meter units and were aggregated to a yearly timescale.
The invasive pathogenic fungus of ash trees alters arthropod predator – prey food webs in forest plantations
<p>The data set contains data on:</p> <p>1] Prey type and size (sheet1: prey type and size). In the cells, prey length in mm is provided for each prey item. NA is stated for a prey item that could not be measured. In this sheet, the plot ids and the spider ids are also stated, which enables connection with other sheets. Note: more prey items caught by an individual are stated in one row if they are of different type. Prey items of a same type caught by an individual are itemized in more rows.</p> <p>2] Information about spider individuals (sheet2: spiders). For each spider individual, it is provided its id, so it can be connected with sheet 1, plot id where it was collected, when it was collected (month), web type, and prosoma length (mm). </p> <p>3] Characteristics of sampling plots (sheet3: environmental data). It is provided plot id, age, infestation degree by H<em>ymenoscyphus fraxineus</em>, canopy openness, shrub coverage, and herb coverage.</p> <p>4] Potential prey of spiders (sheet 4: potential prey). Standardized no. of prey per trap (20 x 15 cm, both sides were sticky) in each plot.</p>
Data from: Tree species diversity alters plant defence investment in an experimental forest plantation in Southern Mexico
The effects of plant species diversity on plant traits conferring herbivore resistance (e.g., chemical defences), as well as the mechanisms underlying such effects, have received little attention. One potential mechanism for diversity effects on plant defences is that increased plant growth at high diversity could lead to reduced investment in defences via growth-defence trade-offs. We measured tree growth (diameter at breast height) and collected leaves for quantification of total phenolics on 2.5-year old plants of six tropical tree species (N = 597 plants) in a young experimental plantation in southern Mexico. Selected plants were distributed across 23 plots (21 x 21 m each) classified as monocultures of one species (N = 13, 2-3 plots per species) or polycultures (N = 10) represented by mixtures of four out of the six species. We found a significant negative effect of tree species diversity on total phenolics, where polycultures exhibited a 13 percent lower mean concentration than monocultures. However, there was marked variation among tree species in diversity effects on defences, where some species exhibited strong reductions in phenolics in mixtures, whereas others were unresponsive. Further, we found no effect of tree species diversity on growth and results indicated that the negative effect of diversity on chemical defences was not mediated by a growth-defence trade-off. These results demonstrate that tree diversity can alter investment in chemical defences in long-lived tree species, which has important implications for predicting effects on consumers and ecosystem function.
Data from: Effects of forest plantations on the genetic composition of conspecific native Aleppo pine populations
Afforestation is a common and widespread management practice throughout the world, yet its implications for the genetic diversity of native populations are still poorly understood. We examined the effect of Aleppo pine (Pinus halepensis) plantations on the genetic composition of nearby conspecific native populations. We focused on two native populations in Israel with different levels of isolation from the surrounding plantations and compared the genetic diversity of naturally established young trees within the native populations with that of local native adults, using nine nuclear microsatellite markers. We found that the genetic composition of the recruits was significantly different from that of local adults in both populations, with allelic frequency changes between generations that could not be ascribed to random drift, but rather to substantial gene flow from the surrounding planted Aleppo pine populations. The more isolated population experienced a lower gene flow level (22%) than the less isolated population (49%). The genetic divergence between native populations at the adult-tree stage (Fst = 0.32) was more than twice as high as that of the young trees naturally established around native adults (Fst = 0.15). Our findings provide evidence for a rapid genetic homogenization process of native populations following the massive planting efforts in the last decades. These findings have important implications for forest management and nature conservation and constitute a warning sign for the risk of translocation of biota for local biodiversity.
A spatial dataset of forest mensuration collected in black pine plantations in central Italy
<p>This dataset has been developed during the A2 Action of the SelPiBio LIFE project (www.selpibio.eu). The main aim of this project is demonstrate the effects of two thinning regimes, selective and from below, on soil biodiversity in young black pine stands.<br> To evaluate the effect of thinning on analysed pinewoods, eighteen monitoring areas of 1 ha each were designed and realized across two study areas in Tuscany (Central Italy), the Pratomagno mountain chain and the Monte Amiata. In each study area, 27 circular plots of 15 metres of radius were geo-referenced (3 for each monitoring area). All the included trees were measured and data were collected between 2015 and early 2016 to characterize the horizontal and vertical structure of studied forests.</p>
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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)
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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.