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11 results for “pine woodlands”
A low-dimensional, mechanistic water balance model for piñon pine-juniper woodlands in southern Nevada, USA
<p>This is a low-dimensional water balance model developed for pinon pine-juniper woodlands in southern Nevada. It may require extensive revision for use in other similar or dissimilar woodland ecosystems. The model will require parameterization before use in any capacity.</p> <p>This model is mechanistic, but is driven from randomized precipitation. This framework allows the user to estimate the mean and standard deviation of water balance variables by simulating the same average meteorological year 1000s of times, each with randomized precipitation. This technique approximates a normal distribution of precipitation, and will need to be modified for locations/sites that have a non-normal precipitation distribution. It is not recommended to use the model in any other way without first testing and validating its output.</p> <p>I have provided documentation throughout the wrapper, model and parameter files to assist with your use of the model. You are encouraged to learn from, build on, and improve this model. You will need to set your own pathways and build your own meteorological inputs and site parameterizations. You may need to update, revise and add/remove different submodules depending on your intended use.</p>
Data for: Hardwoods influence effect of climate and intraspecific competition on growth of woodland longleaf pine trees
<p>Longleaf pine woodlands of the North American Coastal Plain are proposed to be resilient to climate change impacts, but little is known about changes in limiting factors to longleaf pine growth as climate has changed in the late 20<sup>th</sup> and early 21<sup>st</sup> centuries. Moreover, the role that neighborhood trees play in the context of climate change remains largely unexplored. We used static and moving-window tree-ring and climatic analyses to measure the effects of climate on longleaf pine growth at a site in southwest Georgia, USA. We then performed maximum likelihood analysis to examine the influence of neighboring hardwoods on the response of longleaf pine growth to the joint effects of competition and climate. Analysis of climate data from local stations in southwest Georgia over six decades indicated that mean air temperature decreased until the late 20<sup>th </sup>century and then began to rise, and that the variability of spring and summer precipitation has increased. Tree ring and climate analyses indicated longleaf pine radial growth is sensitive to precipitation and air temperature, and that the strength of correlation of longleaf pine growth to summer air temperature and summer precipitation increased since the 1950s. Likelihood models, which were applied over a shorter (23-year) period and explicitly incorporated competition, did not support a link between summer temperature and growth but did indicate summer precipitation increased growth. Furthermore, basal area of neighboring hardwoods was correlated with greater pine growth per millimeter of precipitation. Basal area of neighboring longleaf pine negatively affected the growth of conspecific trees; the presence of hardwoods increased the competitive effect when basal area of neighboring pine trees was low (<10 m<sup>2</sup> ha<sup>-1</sup>) but decreased the competitive effect when basal area of neighboring pine trees was high (≥ 10 m<sup>2</sup> ha<sup>-1</sup>). These results suggest that retention or recruitment of hardwood trees when restoring longleaf pine woodlands may contribute to increased ability to withstand dry summers and may help to allay concerns of managers that retention of hardwoods will unduly affect the growth of residual mature longleaf pines.</p>
Data for: Hardwoods influence effect of climate and intraspecific competition on growth of woodland longleaf pine trees
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Data for: At a fine scale, hardwood patches support wildlife diversity in longleaf pine woodlands
<p>Restoring and maintaining biodiversity in a changing world is increasingly challenging due to the competing needs of species for suitable space and resources. One ecosystem that has seen considerable anthropogenic changes in extent and structure is the longleaf pine (<em>Pinus</em> <em>palustris</em>) ecosystem. Understanding how wildlife responds to restoration is important to informing forest restoration and conservation. We monitored game birds and mid-large-sized mammal occupancy in and around hardwood patches embedded within a longleaf pine woodland at The Jones Center at Ichauway in Newton, GA. We found that 11 species use the transition zone between the longleaf pine and hardwood hammocks. Gray squirrels (<em>Sciurus</em> <em>carolinensis</em>), Virginia opossums (<em>Didelphis</em> <em>virginiana</em>), nine-banded armadillos (<em>Dasypus</em> <em>novemcinctus</em>) occupancy increased along the gradient while and fox squirrel (<em>Sciurus</em> <em>niger</em>) declined. Our results suggest that oak patches and transitional zones are important to maintaining biodiversity within the longleaf pine ecosystem.</p>
Data for: At a fine scale, hardwood patches support wildlife diversity in longleaf pine woodlands
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FIGURES 16–21 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURES 16–21. Morphology of Aphonopelma bacadehuachi, sp. nov. from Sonora, Mexico (female paratype, APH-1356). 16, carapace, dorsal view; 17, right pedipalp, prolateral view; 18, coxa of right leg I, prolateral view; 19, spermathecae; 20, metatarsus and tarsus of left leg III, ventral view; 21, metatarsus and tarsus of left leg IV, ventral view. Scale bar = 5 mm (except for spermathecae, scale bar = 2 mm).
FIGURE 22 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 22. Map of the southwestern United States and northwestern Mexico showing the distributions of the Madrean members of the Marxi species group and Aphonopelma mooreae. The localities for A. mooreae are based on reports provided in iNaturalist (https://www.inaturalist.org/observations?taxon_id=264079, accessed 16 March 2019). The distribution for A. peloncillo only reflects specimens from the eastern foothills of the Peloncillo Mountains and the Animas Valley in New Mexico and does not include several specimens outside of this area as reported in Hamilton et al. (2016); further research is necessary to confirm the identity of the latter specimens. State abbreviations: AZ = Arizona, NM = New Mexico, SON = Sonora, CHI = Chihuahua. The Madrean pine-oak woodlands shapefile was "exploded" from a larger shapefile depicting the planet's biodiversity hotspots (downloaded from http://legacy.cepf.net/SiteAssets/hotspots_2016_1.zip, accessed 16 March 2019).
FIGURE 3–4 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 3–4. Dorsal habitus of Aphonopelma bacadehuachi, sp. nov. from Sonora, Mexico. 3, male holotype (APH-1357); 4, female paratype (APH-1356). Scale bar = 20 mm.
FIGURE 2 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 2. Maximum likelihood phylogeny of the Madrean members of the Marxi species group based on COX1 mtDNA. For presentation sake, specimen labels have been removed from the tree tips. Numbers along branches indicate maximum likelihood bootstrap support values. Photograph is an adult male Aphonopelma madera from the Huachuca Mountains in southeastern Arizona.
FIGURES 5–15 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURES 5–15. Morphology of Aphonopelma bacadehuachi, sp. nov. from Sonora, Mexico (male holotype, APH-1357). 5, carapace, dorsal view; 6, patella and tibia of left leg I, prolateral view; 7, tibial apophysis of left leg I, prolateral view; 8, metatarsus and tarsus of left leg III, ventral view; 9, metatarsus and tarsus of left leg IV, ventral view; 10, left pedipalp, retrolateral view; 11, left pedipalp, prolateral view; 12, femur of leg III, dorsal view; 13, palpal bulb, prolateral view; 14, palpal bulb, retrolateral view; 15, palpal bulb, dorsal view. Scale bar = 5 mm (except for palpal bulb and illustration of tibial apophysis, scale bar = 2 mm).
FIGURE 1 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 1. Scatterplot of principal components for measurements of mature male (top) and female (bottom) Madrean Aphonopelma species. Percentage values indicate the proportion of variation explained by a particular principal component (PC1 and PC2).
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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.