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260 results for “Watershed 1”
Watersheds 1 and 17 white pine survey in 2001
This study involves the resampling of 40 0.2 acre plots throughout the two 35 year old white pine stands to determine the changes in stand structure over time (other survey dates include 1967, 1969, 1972, 1984, and 1989). Live and dead stems of each tree in a plot were measured (diameter at breast height, DBH). In addition, due to the recent infestations in both watersheds by the southern pine bark beetle, current status of trees was also noted.
Coweeta Watershed 1 Litter and Soil Temperature for White Pine Decomposition Study from 2002 to 2004
These data are the hourly readings of litter and soil temperature in the center of each litter decomposition plot. The study was conducted at the Watershed 1 Permanent Census Plot Locations: 14, 15, 22, 28, 62, 70, 74, 90.
Forest floor mass and nutrient content by layer in Coweeta white pine watershed 1 from 2001 to 2003
The forest floor was sampled in 4 beetle-infested and 4 non-beetle-infested white pine plots in watershed 1. Fresh litter (Oi) was separated from decaying litter (Oe). Total litter mass, fresh versus decayed litter, and litter nitrogen content was compared between treatments for years 2001, 2002, 2003.
Litter decomposition rates and litter nutrient content in Coweeta white pine watershed 1 from 2001 to 2004
Litterbag mass remaining in litterbags and rate of decay were compared between 4 beetle-infested and 4 non-beetle-infested white pine plots in watershed 1.
Herb coverage on southern pine beetle and non-southern pine beetle impacted permanent plots in Coweeta white pine watershed 1 from 2001 to 2003
Percent cover of herb layer species was compared between beetle-impacted and non-beetle-impacted white pine plots in watershed 1.
Seedling regeneration density on southern pine beetle and non-southern pine beetle impacted permanent plots in Coweeta white pine watershed 1 from 2001 to 2003
Seedling density was compared between beetle-impacted and non-beetle-impacted white pine plots on watershed 1.
Photosynthetically active radiation (PAR) on southern pine beetle and non-southern pine beetle impacted permanent plots in Coweeta white pine watershed 1 from 2002 to 2003
Light availability (photosynthetically active radiation, PAR) was compared between beetle-impacted and non-beetle-impacted white pine plots watershed 1.
Percent soil moisture on southern pine beetle and non-southern pine beetle impacted permanent plots in Coweeta white pine watershed 1 from 2002 to 2003
Soil moisture was compared between beetle-impacted and non-beetle-impacted white pine plots in watershed 1.
Physical characteristics and GPS data for 21 permanent plots in Coweeta white pine watershed 1 from 2003 to 2004
A GPS receiver was used to acquire UTM coordinates and elevation for each plot center. Aspect and slope were also measured.
Forest Inventory of a Calcium Amended Northern Hardwood Forest: Watershed 1, 2016, Hubbard Brook Experimental Forest
In order to evaluate the role of Ca supply in regulating the structure and function of base-poor forest and aquatic ecosystems, the Ca content of soil was increased through the application of wollastonite (CaSiO3) in October 1999. Forest inventory surveys were initiated in 1996 and repeated at 5 year intervals. This data set includes 2016 inventory measurements. The data consists of a total inventory of all trees >=10 cm diameter-at-breast-height (dbh) on the whole of the watershed (11.8 ha), as measured in each of the 200 25 m x 25 m plots. Trees >=2 to <=10 cm dbh were subsampled using a 3 meter wide strip along one edge of each 25 m x 25 m plot. With the addition of tree tags in 2006 on all trees >=10 cm dbh, tracking of individual trees is now possible. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
Hubbard Brook Experimental Forest: Seedling bank – watershed 1 and watershed 6 (2018)
The understory layer is complex and includes groups of stems with distinctly different chances of survival and recruitment to the sapling size class. We explored how calcium amendment has impacted the trajectory of the seedling bank at Hubbard Brook Experimental Forest. The density of all tree stems in the seedling bank in 2018 (19 years after treatment) was greater in CAL (Watershed 1; calcium treatment) than REF (Waterhsed 6; reference) and beech was more abundant than sugar maple in both watersheds. In terms of relative abundance, the treatment had the opposite effects on the two species: the relative density of sugar maple was significantly greater in CAL than REF while the relative density of beech was significantly less. In terms of beech stem origin, Beech sprouts were more abundant than seedlings on both watersheds; however, beech stems of seed origin were more abundant on CAL (mean±1SE: 4.06±0.49 seedlings m-2) than REF (2.98±0.42), while sprouts were fewer (CAL: 14.4±1.30; REF: 20.5±1.47) resulting in the seedling to sprout ratio on CAL (1:3.5) being half that on REF (1:7). The influence on the seedling bank on future composition of these forests remains to be seen. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
Hubbard Brook Experimental Forest: Soil Acid-Base Properties and Microbial Activity, Watershed 1 and West of Watershed 6 (2015-2016)
In summer 2015 and spring 2016, researchers collected soils from the CaSiO3-enriched watershed at Hubbard Brook (W1) and from a nearby site west of the reference watershed at Hubbard Brook (W6). These soils were sampled throughout the hardwood zone of each watershed, and the sampling scheme explicitly examined pit-and-mound microtopographic gradients. These soils were analyzed for acid-base properties, net and gross N cycling rates, microbial biomass, and C cycling rates. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the US Forest Service, Northern Research Station.
FIGURE 1 in A new species of the seasonal killifish genus Moema (Cyprinodontiformes: Rivulidae) from the Piraí watershed in the Southwest Amazon basin
FIGURE 1 | Moema juanderibaensis, MNKP 16539, holotype, male, 41.9 mm SL (24 days after collection, left side), Bolivia, Santa Cruz, Santa Rosa del Sara.
Fig. 1 in Isotopic profile and mercury concentration in fish of the lower portion of the rio Paraíba do Sul watershed, southeastern Brazil
Fig. 1. Lower portion of the rio Paraíba do Sul watershed with the distribution of the five sampling points: rio Paraíba do Sul in Itaocara (ITA), São Sebastião do Paraíba (SSP) and São Fidélis (SFI); rio Pomba in Baltazar (RPO); rio Dois Rios in Guarani (RDR).
Fig. 1 in A report of 28 unrecorded bacterial species in Korea, isolated from freshwater and sediment of the Han River watershed in 2020
Fig. 1. Neighbor-joining phylogenetic tree based on 16S rRNA gene sequences showing the relationship between the strains isolated in this study and their closest bacterial species. Bootstrap values over 70% are shown at nodes for neighbor-joining, maximum parsimony, and maximum likelihood methods, respectively. Filled circles indicate that the corresponding node was also recovered in the trees reconstructed with both the maximum parsimony and maximum likelihood algorithms, while open circles indicate that the corresponding node was recovered in the tree generated with only one of these algorithms. Scale bar = 0.02 substitutions per nucleotide position.
Fig. 1 in A report of 26 unrecorded bacterial species in Korea, isolated from urban streams of the Han River watershed in 2018
Fig. 1. Map of sampling stations. Open circles and arrows indicate the sampling stations where freshwater and sediment samples were collected in the Han River watershed.
Fig. 1. Phylogenetic relationships between 74 in Prevalence and molecular characterization of novel species of the Diplomonad genus Octomitus (Diplomonadida: Giardiinae) from wildlife in a New York watershed
Fig. 1. Phylogenetic relationships between 74 sequences of Octomitus representing 14 genotypes estimated by maximum likelihood analysis. The GTR + I + G model (gamma shape = 0.338, prop. invariable sites = 0.619) was chosen by jModelTest2 to be the best-fitting evolutionary model. Branches with less than 70% bootstrap support were not considered statistically robust and were collapsed during manual editing of the visualization. Inset: ML phylogeny computed from Octomitus genotypes aligned with the homologous region of available Diplomonad 18S rDNA sequences from Giardia, Spironucleus, Hexamita, Trimitus, and Enteromonas.
Gastropod abundance at Hubbard Brook Experimental Forest, Watershed 1 and West of Watershed 6, 1997-2006
Snail and slug abundance were measured for a 10 year period between 1997 - 2006 at three elevations on Watershed 1 as well as in a reference area west of Watershed 6. Watershed 1 received calcium additions as wollastonite (CaSiO3) during the study period. This data set includes counts of snails and and slugs for the entire study period. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
Forest Inventory of a Calcium Amended Northern Hardwood Forest: Watershed 1, 2006, Hubbard Brook Experimental Forest
In order to evaluate the role of Ca supply in regulating the structure and function of base-poor forest and aquatic ecosystems, the Ca content of soil was increased through the application of wollastonite (CaSiO3) in October 1999. Forest inventory surveys were initiated in 1996 and repeated at 5 year intervals. This data set includes 2006 inventory measurements.The data consists of a total inventory of all trees >=10 cm diameter-at-breast-height (dbh) on the whole of the watershed (11.8 ha), as measured in each of the 200 25 m x 25 m plots. Trees >=2 to <=10 cm dbh were subsampled using a 3 meter wide strip along one edge of each 25 m x 25 m plot. With the addition of tree tags in 2006 on all trees >=10 cm dbh, tracking of individual trees is now possible. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
Forest Inventory of a Calcium Amended Northern Hardwood Forest: Watershed 1, 2011, Hubbard Brook Experimental Forest
In order to evaluate the role of Ca supply in regulating the structure and function of base-poor forest and aquatic ecosystems, the Ca content of soil was increased through the application of wollastonite (CaSiO3) in October 1999. Forest inventory surveys were initiated in 1996 and repeated at 5 year intervals. This data set includes 2011 inventory measurements. The data consists of a total inventory of all trees >=10 cm diameter-at-breast-height (dbh) on the whole of the watershed (11.8 ha), as measured in each of the 200 25 m x 25 m plots. Trees >=2 to <=10 cm dbh were subsampled using a 3 meter wide strip along one edge of each 25 m x 25 m plot. With the addition of tree tags in 2006 on all trees >=10 cm dbh, tracking of individual trees is now possible. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.