cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5063/aa/chadden.60.7
title: NPP in tropical forests: an evaluation and synthesis of existing field data

description: Information on net primary production in tropical forests is needed for the development of realistic global carbon budgets, for projecting how these ecosystems will be affected by climatic and atmospheric changes, and for evaluating eddy covariance measurements of tropical forest carbon flux. However, a review of the database commonly used to address these issues shows that it has serious flaws. In this paper we synthesize the data in the primary literature on NPP in old-growth tropical forests to produce a consistent data set on NPP for these forests. Studies in this biome have addressed only a few NPP components, all aboveground. Given the limited scope of the direct field measurements, we sought relationships in the existing data that allow estimation of unmeasured aspects of production from those that are more easily assessed. We found a predictive relationship between annual litterfall and aboveground biomass increment. For 39 diverse tropical forest sites, we then developed consistent, documented estimates of the upper and lower bounds around total NPP to serve as benchmarks for calibrating and validating biogeochemical models with respect to this biome. We developed these estimates based on existing field measurements, current understanding of aboveground consumption and biogenic volatile organic carbon emissions, and our judgment that belowground production is bounded by the range 0.2-1.2 x ANPP (aboveground NPP). Across this broad spectrum of tropical forests (dry to wet, lowland to montane, nutrient-rich to nutrient-poor soils), our estimates of lower and upper bounds on total NPP range from 1.7 to 11.8 Mg C/ha-yr (lower bounds) and from 3.1 to 21.7 Mg C/ha-yr (upper bounds). We also showed that two relationships that have been used for estimating NPP (the Bray-Gorham relationship based on leaf litterfall and the Miami model based on temperature or precipitation) are not valid for the tropical forest biome.
DOI: 10.5063/aa/chadden.61.2
title: A compilation of literature estimates of tropical forest total NPP or aboveground NPP, with notes on how those estimates were derived

description: This is the appendix of the Ecol Apps tropical forest NPP paper"NPP in tropical forests: an evaluation and synthesis of existing field data", and it is available online in the data journal Ecological Archives: Clark, D.A., S. Brown, D. Kicklighter, J. Chambers, J.R. Thomlinson, Jian Ni, and E.A. Holland. 2001. Appendix 1. Estimates from the literature of net primary productivity in tropical forests. Ecological Archives A011-006. Because of the difficulties of measuring NPP* components in tropical forests (see text), several approaches have been used to estimate NPP in these ecosystems. Although these approaches have attempted to make the best use of limited data on NPP* components, they often relied on relationships extrapolated from temperate forests, information from secondary forests, or dubious assumptions about the constancy of environmental conditions in tropical forests to develop estimates of annual NPP. Below we list estimates of total NPP, aboveground NPP (ANPP) and belowground NPP (BNPP) reported in the literature. Our objective is to highlight the problems associated with developing a consistent database of NPP in tropical forests. Most sites listed below do not meet the criteria established in this study due to problematic or undocumented methods. However, many of these NPP estimates have been used in past compilations of tropical forest NPP (e.g., Lieth 1975, Murphy 1975, DeAngelis et al. 1981, Vogt et al. 1996, Esser et al. 1997). Unfortunately, conflicting NPP estimates for a particular site among reviews of tropicalforest NPP has also added to confusion about NPP in these biomes. To clarify such cases, where possible we provide brief descriptions of how NPP was estimated in these studies. If necessary, we converted the units of the following NPP estimates from dry weight of biomass to carbon by multiplying dry biomass by 0.5 (Note: Raich et al. [1991] and McGuire et al. [1992] reported NPP in units of g C m-2 yr-1; however, both of these authors used a factor of 0.475 g C (g OM)-1 to convert dry weight of organic matter into grams of carbon).
DOI: 10.5063/aa/chadden.62.10
title: Exhaustive map and gridded maps of locations of isopod burrows and environmental variables in a desert site in Israel

description: Isopod data were collected by S. Citron-Pousty in the northern Negev Desert, Israel, near Sede Boqer (30 degrees 52 N, 34 degrees 47 E) in April, 1997. Isopod burrow locations were mapped exhaustively over an irregularly shaped 7.56 ha extent.
DOI: 10.5063/aa/chadden.62.4
title: Exhaustive map and gridded maps of locations of isopod burrows and environmental variables in a desert site in Israel

description: Isopod data were collected by S. Citron-Pousty in the northern Negev Desert, Israel, near Sede Boqer (30 degrees 52 N, 34 degrees 47 E) in April, 1997. Isopod burrow locations were mapped exhaustively over an irregularly shaped 7.56 ha extent.
DOI: 10.5063/aa/chadden.63.1
title: Model results from the"Macro-ecology and biogeography: Hierarchical (Bayesian) model development using data from South Africa" working group

description: See http://www.nceas.ucsb.edu/public/bayesian. This is currently a bare-bones web site that contains results of the groups modeling of distributions of Proteaceae in the Cape Floristic Region of South Africa (CFR). Results are currently available for a subregion of the CFR that encompasses many of the areas of highest species richness for Proteaceae and plants generally. For details of the Bayesian models please see manuscripts referenced at co-PI John Silanders website at the University of Connecticuts Department of Ecology and Evolutionary biology (http://www.eeb.uconn.edu/faculty/silander/silander.htm). Model results currently available on this site include: 1) Maps of the environmental data layers, plus a document that describes how they were created (see folderDataLayersApril03). 2) Boxplots of the parameter estimates for the coefficients (Betas) for each environmental variable for each species (see folderParametersApril03). 3) Maps of the model predictions for 40 species of Proteaceae over a subregion of the CFR (see folderPicturesApril03). 4) A table summarizing the species attributes (e.g. dispersal mode, local population size) for all species (this folder, fileSpeciesAttribs.pdf). Additional details are contained in the individual folders.
DOI: 10.5063/aa/chadden.63.3
title: Model results from the"Macro-ecology and biogeography: Hierarchical (Bayesian) model development using data from South Africa" working group

description: See http://www.nceas.ucsb.edu/public/bayesian. This is currently a bare-bones web site that contains results of the group's modeling of distributions of Proteaceae in the Cape Floristic Region of South Africa (CFR). Results are currently available for a subregion of the CFR that encompasses many of the areas of highest species richness for Proteaceae and plants generally. For details of the Bayesian models please see manuscripts referenced at co-PI John Silander's website at the University of Connecticut's Department of Ecology and Evolutionary biology (http://www.eeb.uconn.edu/faculty/silander/silander.htm). Model results currently available on this site include: 1) Maps of the environmental data layers, plus a document that describes how they were created (see folder "DataLayersApril03"). 2) Boxplots of the parameter estimates for the coefficients ("Betas") for each environmental variable for each species (see folder "ParametersApril03"). 3) Maps of the model predictions for 40 species of Proteaceae over a subregion of the CFR (see folder "PicturesApril03"). 4) A table summarizing the species attributes (e.g. dispersal mode, local population size) for all species (this folder, file "SpeciesAttribs.pdf"). Additional details are contained in the individual folders.
DOI: 10.5063/aa/chadden.64.1
title: NPP Multi-Biome: Gridded Estimates for Selected Regions Worldwide, 1989-2001, R1

description: Most field data for net primary productivity (NPP) are for relatively small field sites that are effectively points when considered at the 0.5 x 0.5 degree scale commonly used in global biogeochemical models. Thus, direct comparison between field data and coarse resolution model outputs can be misleading. Consistent estimates of NPP for 0.5x0.5 degree grid cells were developed from 15 studies representing NPP in croplands, sparse vegetation, shrublands, grasslands, and forests worldwide. The data set contains 3654 cells with a subset of 2335 cells in which outliers were removed and all replicate measurements were aggregated for each cell. The data set is a contribution to the Global Primary Production Data Initiative (GPPDI). Total NPP ranged from 3 gC/m2/yr for sparse vegetation to 1235 gC/m2/yr in forest, while aboveground NPP ranged from 3 to 890 gC/m2/yr (Zheng et al. 2003). Zheng et al. (2003) discuss the potential problems in such data-model inter-comparisons and identify issues that must be considered during the aggregation of field-scale data to coarser spatial resolutions, usually in the form of grid cells. They evaluated the data set by comparison with existing literature and the widely used Miami model. The file NPP_Gridded_3654_cells.csv is suitable for biome level and overall analyses because of larger sample size. The file NPP_Gridded_2335_unique_cells.csv was derived from the larger file; however, outliers were excluded, replicate measurements were averaged out for each unique geographic locations, and cells classified as water, bareground, and urban were excluded. It is more appropriate for model/data inter-comparisons.
DOI: 10.5063/aa/chadden.65.1
title: NPP Multi-Biome: Global Primary Production Data Initiative Products

description: NPP (net primary production) data from existing field measurements are being compiled for approximately 100 study sites covering several major world ecosystem types. These data are used by global change modelers to develop and validate models of vegetation-soil-atmosphere interactions within the global carbon cycle and to help calibrate remote sensing of vegetation worldwide Under the auspices of the GPPDI, NPP estimates were compiled for 2,523 sites and 5,164 half-degree grid cells, by investigators based at the Environmental Sciences Division, Oak Ridge National Laboratory (ORNL), Tennessee, USA and the Department of Geography, University of Maryland, USA. The GPPDI database includes NPP measurements collected over a long time period by many investigators using a variety of methods. Progress in modeling the global carbon cycle was previously inhibited by the lack of adequate observational data for model parameterization and validation, such as net primary productivity (NPP) and its individual components from field measurements. To address this problem, the Global Primary Production Data Initiative (GPPDI) was set up as a Focus 1 activity of the IGBP Data and Information System, a coordinated international program to improve worldwide estimates of terrestrial NPP for parameterization, calibration, and validation of NPP models at various scales. Under the auspices of the GPPDI, NPP estimates were compiled for 2,523 sites and 5,164 half-degree grid cells, by investigators based at the Environmental Sciences Division, Oak Ridge National Laboratory (ORNL), Tennesseee, U.S.A. and the Department of Geography, University of Maryland, U.S.A. Together, these data represent a more comprehensive database of NPP measurements than has previously existed. The GPPDI database includes NPP measurements collected over a long time period by many investigators using a variety of methods. The minimum requirements for data to be included were as follows: 1. the use of one or more accepted methods to estimate aboveground or belowground NPP, 2. geographical location for the study site, 3. definition of biome or vegetation type, and 4. citable reference to peer-reviewed publication, symposium or workshop proceedings, book chapter, or technical memorandum. The point measurements of NPP were categorized as either Class A, representing intensively studied or well-documented study sites (e.g., with site-specific climate, soils information, etc.), Class B, representing more numerous"extensive" sites with less documentation and site-specific information available, or Class C, representing regional collections of half-degree latitude-longitude grid cells.
DOI: 10.5063/aa/chadden.67.1
title: (:unkn)
DOI: 10.6085/aa/hms001_020mxti004r00_19991007.50.5
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using a StowAway XTI Temperature Logger (Onset Computer Corp. XTI32-05+37) beginning 1999-10-07. The instrument depth was 004 meters, in an overall water depth of 20 meters (both relative to Mean Sea Level, MSL). The sampling interval was 4.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_19991123.50.2
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 1999-11-23. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was -14.2 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_19991123.50.5
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 1999-11-23. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was -14.2 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000114.50.2
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-01-14. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000114.50.3
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-01-14. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000114.50.5
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-01-14. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000207.50.1
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-02-07. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000207.50.2
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-02-07. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000207.50.5
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-02-07. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000313.40.2
title: (:unkn)
DOI: 10.6085/aa/hms001_020mxti004r00_20000313.50.1
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-03-13. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000313.50.2
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-03-13. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000313.50.3
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-03-13. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000313.50.4
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-03-13. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000313.50.5
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-03-13. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000313.50.6
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-03-13. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000420.40.1
title: (:unkn)
DOI: 10.6085/aa/hms001_020mxti004r00_20000420.40.2
title: (:unkn)
DOI: 10.6085/aa/hms001_020mxti004r00_20000420.50.1
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-04-20. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000420.50.2
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-04-20. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000420.50.3
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-04-20. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000420.50.5
title: PISCO: Physical Oceanography: moored temperature data: Hopkins Marine Station, California, USA (HMS001)

description: This metadata record describes moored seawater temperature data collected at Hopkins Marine Station, California, USA, by PISCO. Measurements were collected using StowAway XTI Temperature Loggers (Onset Computer Corp. XTI32-05+37) beginning 2000-04-20. The instrument depth was 004 meters, in an overall water depth of 020 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.
DOI: 10.6085/aa/hms001_020mxti004r00_20000516.40.1
title: (:unkn)
DOI: 10.6085/aa/hms001_020mxti004r00_20000516.40.2
title: (:unkn)