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2,739 results for “arizona”
Central Arizona - Phoenix Urban LTER site, station USGS Station 09502000, Salt River below Stewart Mountain Dam, AZ, study of mean daily streamflow in units of litersPerSecond 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 Central Arizona - Phoenix Urban LTER (CAP) contains mean daily streamflow measurements in litersPerSecond units and were aggregated to a yearly timescale.
Effects of urban horticulture on insect pollinator community structure, central Arizona Phoenix: site locations
Insects that pollinate flowering plants are often considered "keystone species," animals that play extremely important roles in ecosystem functioning such that their absence would have more widespread and far-reaching effects than their abundance alone would indicate. For example, the absence of pollinating insects would translate to a severe reduction in plant reproduction, which would in turn affect not only the plants but also seed-eating animals, herbivorous animals, predators of the herbivores, and so on in a trophic cascade. Such a scenario would impact not only wildlife but also human populations because insects pollinate the majority of human food-plants. While the importance of these relationships is acknowledged, surprisingly, little is known about how insect pollinator communities are affected by environmental changes, such as global climate change or urban development. There has recently been a call for research on insect pollinator communities, citing a pressing need to obtain baseline information in the face of probable future environmental changes. The Sonoran Desert has one of the most diverse insect communities in the world (particularly for members of the Order Hymenoptera [bees, wasps, and ants], which perform the lion's share of pollination duties for both native and crop plants). This community may be threatened from the presence of the exotic honeybee and from habitat alteration in the form of urban development. We propose to conduct a pilot study to examine how the pollinator community differs under different forms of urban land use in the Phoenix metropolitan area. We have three research questions: (1) How does the ratio of native species to the exotic honeybee differ among natural desert, urban desert remnants, and residential areas that also have flowering plants? (2) How does insect pollinator community structure (richness and abundance) differ among natural desert, urban desert remnants, and residential areas? and (3) How does insect poll
Urban storm runoff study conducted in the central Arizona-Phoenix area: study site locations
Flood is the other major disturbance on which CAP LTER will focus. In collaboration with the USGS, we have begun a study to examine the transport of materials from urban patches to waterways during the intense, localized storms that characterize this region. Their existing data, plus new studies initiated in summer 1998, will form the basis for comparison of urban, suburban, and desert catchments in terms of their yields of nutrients, organic carbon, and metals.
Scorpions in urban environments in the Central Arizona-Phoenix area: site locations
Determination of what degree of human modification influences the frequency of scorpion stings by looking at the number of scorpion stings in different zip code areas of the Phoenix metropolitan area. Results from this study may be useful in making recommendations on land development so scorpion stings are minimal.
Effects of urban horticulture on insect pollinator community structure in the central Arizona-Phoenix area
Insects that pollinate flowering plants are often considered "keystone species," animals that play extremely important roles in ecosystem functioning such that their absence would have more widespread and far-reaching effects than their abundance alone would indicate. For example, the absence of pollinating insects would translate to a severe reduction in plant reproduction, which would in turn affect not only the plants but also seed-eating animals, herbivorous animals, predators of the herbivores, and so on in a trophic cascade. Such a scenario would impact not only wildlife but also human populations because insects pollinate the majority of human food-plants. While the importance of these relationships is acknowledged, surprisingly, little is known about how insect pollinator communities are affected by environmental changes, such as global climate change or urban development. There has recently been a call for research on insect pollinator communities, citing a pressing need to obtain baseline information in the face of probable future environmental changes. The Sonoran Desert has one of the most diverse insect communities in the world (particularly for members of the Order Hymenoptera [bees, wasps, and ants], which perform the lion's share of pollination duties for both native and crop plants). This community may be threatened from the presence of the exotic honeybee and from habitat alteration in the form of urban development. We propose to conduct a pilot study to examine how the pollinator community differs under different forms of urban land use in the Phoenix metropolitan area. We have three research questions: (1) How does the ratio of native species to the exotic honeybee differ among natural desert, urban desert remnants, and residential areas that also have flowering plants? (2) How does insect pollinator community structure (richness and abundance) differ among natural desert, urban desert remnants, and residential areas? and (3) How does insect poll
Point count bird censusing - long term study in central Arizona-Phoenix: Study sites
Project goal: To study the patterns in bird species diversity, abundance and distribution over time and space, and the processes behind these patterns as a result of urbanization. The ongoing project (since October 2000) is documenting the abundance and distribution of birds in four habitats (51 sites): Urban (18) Desert (15) Riparian (11) and agricultural (7). The 40 non-riparian sites are a subset of the CAP LTER Survey200 points. We are using point counts to survey birds four times a year (January, April, July and October). During each session each point is visited by three birders who count all birds seen or heard for 15 minutes. Our goal is to study how different land-use forms affect bird abundance, distribution and diversity in the greater Phoenix area in order to predict and preserve high bird species diversity as urban development is proceeding. This dataset documents only the spatial location of bird survey locations. For full project data, including results of bird surveys, and updated bird survey locations, please see: Bateman, Heather; Childers, Dan; Katti, Madhusudan; Shochat, Eyal; Warren, Paige (2016-12-16): Point-count bird censusing: long-term monitoring of bird abundance and diversity in central Arizona-Phoenix, ongoing since 2000. Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/cc7181cd38ce3a19e32708caebdf13de
Landscape water use efficiency study: central Arizona-Phoenix, 2000-2003
This project was initiated in collaboration with the Desert Botanical Garden to study water use efficiency at the landscape level within the central Arizona-Phoenix, 2000-2003.
Landuse classification map for the Central Arizona-Phoenix area for the year 2000
The simplified classification of Maricopa Association of Governments (MAG) land use map is created by combining the original land use categories into 5 major classes - urban, agriculture, recreation, desert, and other. This has been done for land use/land cover monitoring purposes and to compare the 2000 land use map with historic land use layers including the 1995 MAG land use map.
Dissolved organic carbon dynamics in an urban desert stream ecosystem in central Arizona-Phoenix
Variation in stream chemistry is a function of the strength of terrestrial-aquatic linkages, the extent to which surface and groundwater exchanges, and the rate of instream biotic processes. The importance of these variables may fluctuate as a function of climate regime, catchment geomorphology, or level of human impact. A mechanistic understanding of the influence of each of these variables on ecosystem functioning will increase understanding of the role of streams in global nutrient and carbon cycles. Of particular interest is dissolved organic carbon (DOC), an important source of carbon and energy for microbial processes. Respiration by heterotrophic bacterial communities has recently been linked to the quality (ability of microbes to utilize C source) of the DOC pool in streams. DOC not only influences stream nutrient supply, but also the transport of contaminants and the attenuation of UV radiation. This dissertation focused on DOC delivery to two arid-land stream ecosystems, one native desert (Sycamore Creek, AZ), and one urban (Phoenix, AZ). The overall objectives of this work were to (1) document patterns in DOC quantity and chemical composition in response to flooding and groundwater exchange, (2) generate and test hypotheses explaining variation in DOC quantity and quality and (3) relate this variation to microbial activity. In the native desert stream ecosystem, the climate regime influenced seasonal variation in the quantity and quality of DOC inputs, with higher complexity and higher concentrations of DOC in summer monsoonal runoff. In contrast, human alteration of geomorphology and hydrologic flowpaths in the Phoenix metropolitan area significantly influenced streamwater chemistry in comparison to low-impact streams in the Sonoran Desert. In the city, mechanisms of nutrient retention and transformation were often shifted from dominance by biotic to abiotic ones, severely dampening the influence of climate regime and substituting instead the maintenance
Survey 200 - Periodic survey of multiple sites in central Arizona-Phoenix: Annuals
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. The data set here includes a subset of information from the Survey200/ESCA focusing exclusively on annuals in the survey plots. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Survey 200 long term study of multiple sites in central Arizona-Phoenix: arthropod sweepnet samples
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. The data set here includes a subset of information from the Survey200/ESCA focusing exclusively on arthropods in the survey plots. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Survey 200 long term study of multiple sites in central Arizona-Phoenix: Cacti
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. The data set here includes a subset of information from the Survey200/ESCA focusing exclusively on cacti and succulents in the survey plots. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Survey 200 long term study of multiple sites in central Arizona-Phoenix: landuse
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. The data set here includes a subset of information from the Survey200/ESCA focusing exclusively on land use and land cover in the survey plots. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Survey 200 long term study of multiple sites in central Arizona-Phoenix: neighborhood characteristics
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. The data set here includes a subset of information from the Survey200/ESCA focusing exclusively on neighborhood characteristics around the survey plots. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Survey 200 long term study of multiple sites in central Arizona-Phoenix: human activity related measurements
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. The data set here includes a subset of information from the Survey200/ESCA focusing exclusively on buildings and indicators of human activity in the survey plots. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Survey 200 long term study of multiple sites in central Arizona-Phoenix: pollen
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. A pilot survey was conducted in 1999, and the first full ESCA was conducted in 2000. The maiden survey in 2000 featured a suite of measurements, including quantifying pollen in soil samples, that were not assessed in later surveys. The data set here includes a subset of information from the Survey200/ESCA focusing exclusively on pollen counts in soils collected from the survey plots. Survey 200 was the original name of the project, and it was renamed to ESCA following the survey conducted in 2015. Investigators interested in more recent survey data, or other variables measured as part of ESCA should search the data catalog for 'ecological survey of central arizona' or 'survey 200'.
Survey 200 long term study of multiple sites in central Arizona-Phoenix: decomposition, mycorrhizae, and on-site climate - survey year 2000
The Ecological Survey of Central Arizona (ESCA) is an extensive field survey and integrated inventory designed to capture key ecological indicators of the CAP LTER study area consisting of the urbanized, suburbanized, and agricultural areas of metropolitan Phoenix, and the surrounding Sonoran desert. The survey is conducted every five years at approximately 200 sample plots (30m x 30m) that were located randomly using a tessellation-stratified dual-density sampling design. Study plots cover habitats throughout the CAP LTER study area ranging from native Sonoran desert sites to residential yards to an airport tarmac. Measurements include an inventory of all plants (identified to the lowest possible taxonomic unit, typically species), plant biovolume, soil coring for physicochemical properties, arthropod sweep-net sampling, photo documentation, and a visual survey of site and area characteristics. The objectives of the survey are to (1) characterize patches in terms of key biotic, physical, and chemical variables, and (2) examine relationships among land use, general plant diversity, native plant diversity, plant biovolume, soil nutrient status, and social-economic indices along an indirect urban gradient. A pilot survey was conducted in 1999, and the first full ESCA was conducted in 2000. The maiden survey in 2000 featured a suite of measurements, such as quantifying pollen from soil samples, measuring weather at the survey site, breakdown of organic matter, etc., that were not assessed in later surveys. The data set here includes a subset of data from the Survey200/ESCA focusing exclusively on measurements that were conducted during the year 2000 survey only, and were not continued in subsequent surveys. The focus of this data set includes: local climate at the time of surveying in the field, land use up to 100 meters beyond the survey plot boundary, breakdown of organic matter (as dowels and litter bags), and soil mycorrhiza. Survey 200 was the original name of the
Ecology Explorers educational data: arthropod data from multiple school locations in the central Arizona-Phoenix area
The Sonoran Desert has one of the most diverse native plant species and animal species of any desert in the world. Many arthropods (insects, spiders, scorpions) are adapted to living here and are part of food webs that include animals and plants also adapted to desert living. Phoenix is an ever-expanding urban area within the Sonoran Desert. Scientists are studying the impact of this urbanization on arthropod communities. How has urbanization affected the number and diversity of arthropod species? Are there areas within urban Phoenix which attract more arthropods?
Ecology Explorers educational data: bird data from multiple school locations in the central Arizona-Phoenix area
The Sonoran Desert has one of the most diverse native plant and animal species of any desert in the world. Many birds are uniquely adapted to living here and they are part of food webs which include animals and plants that also are adapted to desert living. Phoenix is an ever-expanding urban area located in the Sonoran Desert. CAP LTER scientists are studying the impact of this urbanization on bird communities. o Which birds are living in the Phoenix metropolitan area? o Which landscape designs attract which types of birds? o Are there different kinds of birds in different urban landscapes (residential, commercial, parks)? To answer these questions ecologists are conducting surveys of bird populations throughout the Phoenix metropolitan area. Your school can be part of this process by conducting your own bird surveys within your school yard and sending that information to scientists at ASU.
Ecology Explorers educational data: bruchid data from multiple school locations in the central Arizona-Phoenix area
The Sonoran Desert has one of the most diverse native plant and animal species of any desert in the world. Many trees are uniquely adapted to living here and they are part of food webs that include animals and insects also are adapted to desert living. Phoenix is an expanding urban area located within the Sonoran Desert. One Sonoran Desert plant that has found its way into urban landscapes is the palo verde tree. In the desert, this tree supports a community of animals including bruchid beetles. These insects lay their eggs on palo verde seedpods and the larvae feed on the seeds. The interactions between plants and animals can provide vital information on the health of an ecosystem. Ecologists are interested in determining whether the interactions between urban Palo Verde Trees and bruchid beetles is similar or different than their interactions in undisturbed Sonoran Desert communities. You can provide important data by investigating the palo verde trees and bruchid beetle populations in your schoolyard.
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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.