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32 results for “rainfall gradient”
Data from: Local adaptation to herbivory within tropical tree species along a rainfall gradient
<p>In tropical forests, insect herbivores exert significant pressure on plant populations. Adaptation to such pressure is hypothesized to be a driver of high tropical diversity, but direct evidence for local adaptation to herbivory in tropical forests is sparse. At the same time, herbivore pressure has been hypothesized to increase with rainfall in the tropics, which could lead to differences among sites in the degree of local adaptation. To assess the presence of local adaptation and its interaction with rainfall, we compared herbivore damage on seedlings of local vs non-local populations at sites differing in moisture availability in a reciprocal transplant experiment spanning a rainfall gradient in Panama. For 13 native tree species, seeds collected from multiple populations along the rainfall gradient were germinated in a shadehouse and then transplanted to experimental sites within the species range. We tracked the likelihood of herbivore attack over 1.5 years and quantified the percentage of leaf area damaged at the end of the study. Seedlings originating from local populations were less likely to be attacked and experienced lower amounts of herbivore damage than those from non-local populations, but only on the wetter end of the rainfall gradient. However, overall herbivore damage was higher at the drier site compared to wetter sites, contrary to expectation. Taken together, these findings support the idea that herbivory can result in local adaptation within tropical tree species; however, the likelihood of local adaptation varies among sites due to environmentally-driven differences in investment in defense or herbivore specialization or both.</p>
Data from: Does soil moisture availability explain liana seedling distribution across a tropical rainfall gradient?
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Data from: Do pathogens limit the distributions of tropical trees across a rainfall gradient?
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Data from: β-diversity of herbaceous versus woody plant communities across a tropical rainfall gradient
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Liana abundance and diversity increase with rainfall seasonality along a precipitation gradient in Panama
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Data from: Multiple scales of spatial heterogeneity control soil respiration responses to precipitation across a dryland rainfall gradient
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Data from: Mimicking a rainfall gradient to test the role of soil microbiota for mediating plant species responses to drier conditions
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Data from: Testing the divergent adaptation of two congeneric tree species on a rainfall gradient using eco-physio-morphological traits
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Data from: Local adaptation to herbivory within tropical tree species along a rainfall gradient
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Data from: Contrasting patterns of insect herbivory and predation pressure across a tropical rainfall gradient
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Site data and PLFA obtained along a rainfall and soil type gradient in the Sahel region of West Africa 2019-2020 (PRJNA930013)
<p>The Sahel of West Africa is a vulnerable biome that is experiencing rapid population growth, agricultural intensification, and soil degradation that threatens food security. A potential solution is intercropping with the indigenous shrub, <em>Guiera senegalensis</em>, that coexists with crops to varying degrees in farmers’ fields throughout the Sahel. Previous research of the Optimized Shrub-intercropping System (OSS) with <em>G. senegalensis</em> (high density of ~1200 1500 shrubs ha<sup>-1</sup> ) with annual incorporation of coppiced residue) has been shown to dramatically improve pearl millet (<em>Pennisetum glaucum</em>) yield; attributed in part to improved soil quality, nutrient availability, water use efficiency and harboring a distinct and active microbial community that may confer benefits to surrounding crops. Whether this microbial response is consistent over a climate and soil type gradient in farmers’ fields has not been investigated. Therefore, the objective was to determine the microbiomes and metabolic pathways of millet root zone soil in the presence or absence of <em>G. senegalenis</em>, sampled along a north-south soil and rainfall gradient in farmers’ fields. The experimental design was a completely randomized 3 X 2 factorial (2 landscape replications) with the following treatments: three rainfall (450 to 750 mm per annum)/soil type gradient sites north to south in the Senegal Peanut Basin and two sampling location treatments (millet root zone soil within and outside the influence of the <em>G.</em> <em>senegalensis</em>). <em>G. senegalensis</em> shifted certain predicted bacterial metabolic pathways and enriched certain bacterial and fungal genera, some of which are known to have plant growth promoting properties. These positive shrub effects were most evident at the northern site that has low rainfall and low organic matter soils. Here we share soil chemical, plant and PLFA datasets obtained in the 2019- 2020 sampling seasons and related to metagenomic data publicly available via NCBI PRJNA930013.</p>
Data from: Understanding nutrient dynamics in an African savanna: local biotic interactions outweigh a major regional rainfall gradient
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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)
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.