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1,271 results for “tropical forest”
Simulation results for "Modeling the joint effects of vegetation characteristics and soil properties on ecosystem dynamics in a Panama tropical forest"
<p>This dataset is the ELM-FATES simulation outputs for the paper entitled "Modeling the joint effects of vegetation characteristics and soil properties on ecosystem dynamics in a Panama tropical forest". </p>
Fire alters diversity, composition and structure of dry tropical forests in the Eastern Ghats
<p>Fire is known to have dramatic consequences on forest ecosystems around the world, and on the livelihoods of forest-dependent people. While the Eastern Ghats of India have high abundances of fire-prone dry tropical forests, little is known about how fire influences the diversity, composition and structure of these communities. Our study aims to fill this knowledge gap by examining the effects of presence and absence of recent fire on tropical dry forest communities within Kadiri watershed, Eastern Ghats. We sampled plots with and without evidence of recent fire in the Eswaramala Reserve Forest in 2008 and 2018. Our results indicate that even though stem density increases in the recently burned areas, species richness is lower because communities become dominated by a few species with fire resistance and tolerance traits, such as thick bark and clonal sprouting. Further, in the presence of fire, the size structure of these fire-tolerant species shifts towards smaller-sized, resprouting individuals. Our results demonstrate that conservation actions are needed to prevent further degradation of forests in this region and the ecosystem services they provide.</p>
FIGURE 3 in An updated checklist of bryophytes for the state of Paraíba, a Brazilian hotspot: new records and biological spectrum in a Seasonally Dry Tropical Forest fragment
FIGURE 3. Representation of life forms in terms of bryophyte species richness in thee studied seasonally dry tropical forest fragment in the Northeast Region of Brazil.
FIGURE 2 in An updated checklist of bryophytes for the state of Paraíba, a Brazilian hotspot: new records and biological spectrum in a Seasonally Dry Tropical Forest fragment
FIGURE 2. Results for the Weighted Pair-Group Method with Arithmetic mean (WPGMA) based on the Sørensen similarity index for all species at sites listed by Germano et al. (2016) and the studied seasonally dry tropical forest fragment (SDTF). Cophenetic Correlation Coefficient (CCC) = 0.83. The areas are named following Germano et al. (2016) with P = point/sampled area.
Response of Avian communities to edges of tropical montane forests: Implications for the future of endemic habitat specialists
<p>Tropical montane landscapes harbor diverse flora and fauna, and many species there are ecological specialists with narrow elevational distributions, limited geographic ranges, and small global populations. Along elevational gradients, environmental conditions and community composition change dramatically over small spatial scales. As forests are disturbed and edges formed with modified habitat, natural communities could be affected differently across elevations by the many physical and biotic changes at edges. We asked whether forest edges produced altered patterns of avian species composition along a cloud forest - dry forest gradient on the Pacific slope of the Tilarán mountains in Monteverde, Costa Rica. A strong moisture gradient produces cloud forests near the ridgetops, with a concentration of species endemic to the Costa Rica – Panama highlands that are habitat specialists. We conducted 552 point counts across 110 locations from 1100 to 1800 m elevation, yielding 6586 detections of 115 species in 10 km<sup>2</sup> of montane forest. We analyzed differences in species composition and single-species abundances between interior and near-edge forest habitats for species grouped by geographic range size. Species composition changed markedly from forest edge to interior in cloud forest habitats, but not in drier forests downslope. Endemic species, especially in cloud forest, were detected less frequently in mature forest near edges than in mature forest interior, and this difference was more pronounced than for cosmopolitan species. On tropical mountainsides, we can expect habitat-specialist endemic species to be more sensitive to further habitat modification. This sensitivity could limit the resilience of tropical bird communities.</p>
FIGURE 2. Ischaemum mistryi. A in Ischaemum mistryi (Poaceae: Andropogoneae): A new remarkable species from Sub-Tropical Evergreen Forest, India
FIGURE 2. Ischaemum mistryi. A. Close-up of basal portion. B. Villous basal sheath. C. Collar. D. Upper most leaf (acute). E. Drooping leaves. F. Laterally compressed basal sheath. G. Node.
FIGURE 1. Ischaemum mistryi. A. Habit. B. Emerging inflorescence. C. Basal raised thicket. D in Ischaemum mistryi (Poaceae: Andropogoneae): A new remarkable species from Sub-Tropical Evergreen Forest, India
FIGURE 1. Ischaemum mistryi. A. Habit. B. Emerging inflorescence. C. Basal raised thicket. D. Spiciform-raceme young and dried. E. Petiole. F. A short portion of a leaf blade.
FIGURE 3 in Ischaemum mistryi (Poaceae: Andropogoneae): A new remarkable species from Sub-Tropical Evergreen Forest, India
FIGURE 3. Ischaemum mistryi (A and C–V) and Ischaemum mangaluricum (B). A. Spikelet (I. mistryi). B: B1. Spikelet. B2. Rhachis internode (I. mangaluricum). C–M: Sessile spikelet and rhachis. C. Lower glume (dorsal). D. Lower glume (ventral). E. Rhachis internode. F1. Lower lemma (dorsal). F2. Lower lemma (ventral). G1. Lower palea (dorsal). G2. Lower palea (ventral). H. Upper palea. I. Upper lemma. J2. Upper glume (ventral). J2. Upper glume (side view). K. Anthers of upper floret. L. Pistil. M. Lodicules of upper floret. N–U: Pedicelled spikelet. N1. Lower glume (dorsal). N2. Lower glume (ventral). O1. Upper glume (ventral). O2. Upper glume (side view). P1. Lower lemma. P2. Lower palea. Q. Upper lemma. R. Upper palea. S. Anthers of upper floret. T. Lodicules of upper floret. U. Pistil. V. Basal portion of the plant. (Illustrated by: Shahid Nawaz).
FIGURE 3. Cladophialophora bromeliacearum URM 8085 in Cladophialophora bromeliacearum (Herpotrichiellaceae, Chaetothyriales), a novel endophytic species from the Brazilian tropical dry forest
FIGURE 3. Cladophialophora bromeliacearum URM 8085 (ex-type living culture). a. Colony on PDA in the top and MEA after 30 days at 27 °C. b–c. Conidiophores and conidiogenous cells. d–e. Conidiophores, conidiogenous cells and conidia. f. Details of a conidiogenous cell and conidia. g. Chlamydospore. Scale bars: 10 µm.
FIGURE 2 in Cladophialophora bromeliacearum (Herpotrichiellaceae, Chaetothyriales), a novel endophytic species from the Brazilian tropical dry forest
FIGURE 2. Maximum likelihood (ML) trees obtained using an independent matrix of ITS and LSU rDNA sequences of Cladophialophora species. The new species is in bold face. ML bootstrap (ML-BS) values from 70% are shown near nodes. The tree was rooted to Phialophora reptans CBS 113.85. The bar represents expected number of substitutions per site. The superscripts T, ET, and LT indicate ex-type, ex-epitype and ex-lectotype strains, respectively.
FIGURE 1 in Cladophialophora bromeliacearum (Herpotrichiellaceae, Chaetothyriales), a novel endophytic species from the Brazilian tropical dry forest
FIGURE 1. Bayesian inference (BI) tree obtained using a combined matrix of ITS and LSU rDNA sequences of Cladophialophora species. The new species is in bold face. BI posterior probability (BPP) and ML bootstrap (ML-BS) from 0.95 and 70%, respectively, are shown near nodes. The tree was rooted to Phialophora reptans CBS 113.85. The bar represents expected number of substitutions per site. The superscripts T, ET, and LT indicate ex-type, ex-epitype and ex-lectotype strains, respectively.
Supplementary material 1 from: Ngoute CO, Hunter D, Lecoq M (2021) Perception and knowledge of grasshoppers among indigenous communities in tropical forest areas of southern Cameroon: Ecosystem conservation, food security, and health. Journal of Orthoptera Research 30(2): 117-130. https://doi.org/10.3897/jor.30.64266
Supplementary material 1 from: Ngoute CO, Hunter D, Lecoq M (2021) Perception and knowledge of grasshoppers among indigenous communities in tropical forest areas of southern Cameroon: Ecosystem conservation, food security, and health. Journal of Orthoptera Research 30(2): 117-130. https://doi.org/10.3897/jor.30.64266
Figure 4. Similarity profile CqN for q in Diversity of orb-weaving spiders (Arachnida: Araneae) from tropical dry forest in Northern Colombia, with eleven new records for the country
Figure 4. Similarity profile CqN for q = 0, q = 1 and q = 2 among forests. The bars correspond to 95% confidence intervals.
Figure 3. Diversity profile for q between 0 and 2 in Diversity of orb-weaving spiders (Arachnida: Araneae) from tropical dry forest in Northern Colombia, with eleven new records for the country
Figure 3. Diversity profile for q between 0 and 2 of the forests studied. The shaded areas correspond to 95% confidence intervals.
Figure 1 in Diversity of orb-weaving spiders (Arachnida: Araneae) from tropical dry forest in Northern Colombia, with eleven new records for the country
Figure 1. Study area showing the locations of tropical dry forest fragments in the Department of Sucre, Colombia.
Coarse woody debris density and carbon concentration by decay classes in mixed montane wet tropical forests (Dataset)
<p>This dataset contains data from a study considering the relationship between decay class, wood density and C content of CWD in old-growth mixed monsoon montane tropical forests in Vietnam based on the inventory of 359 CWD pieces.</p> <p>The CWD inventories were conducted on forty one (3-4 per site) 50 m long and 4 m wide transects. The first dataset for contains site description, plot and transect numbers with geographical coordinates. All CWD pieces of more than 6 cm in diameter were inventoried. The dataset contains position of CWD: stumps, standing dead trees (snags), lying logs, leaning logs and branches, diameter, proportion consumed by termites, decay class, bulk density and moisture of wood and mass loss. The second dataset contains the data on the wood density of tree species present in the study area according to the global database compiled by Zanne et al. (2009).</p>
Timing is everything: Acoustic niche partitioning in two tropical wet forest bird communities
<p><span><span><span><span><span><span><span><span><span><span><span>When acoustic signals sent from individuals overlap in frequency and time, acoustic interference and signal masking may occur. Under the acoustic niche hypothesis (ANH), signaling behavior has evolved to partition acoustic space and minimize overlap with other calling individuals through selection on signal structure and/or the sender's ability to adjust the timing of signals. Alternately, under the acoustic clustering hypothesis, there is potential benefit to convergence and synchronization of the structural or temporal characteristics of signals in the avian community, and organisms produce signals that overlap more than would be expected by chance. Interactive communication networks may also occur, where species living together are more likely to have songs with convergent spectral and or temporal characteristics. In this study, we examine the fine-scale use of acoustic space in montane tropical wet forest bird communities in Costa Rica and Hawai'i. At multiple recording stations in each community, we identified the species associated with each recorded signal, measured observed signal overlap, and used null models to generate random distributions of expected signal overlap. We then compared observed vs. expected signal overlap to test predictions of the acoustic niche and acoustic clustering hypotheses. We found a high degree of overlap in the signal characteristics (frequency range) of species in both Costa Rica and Hawai'i, however, as predicted under ANH, species significantly reduced observed overlap relative to the random distribution through temporal partitioning. There was little support for acoustic clustering or the prediction of the network hypothesis that species segregate across the landscape based on the frequency range of their vocalizations. These findings constitute strong support that there is competition for acoustic space in these signaling communities, and this has resulted primarily in temporal partitioning of the soundscape.</span></span></span></span></span></span></span></span></span></span></span></p>
Data linked to the "Liana optical traits increase tropical forest albedo and reduce ecosystem productivity" paper
<p>Data necessary to reproduce the findings of the aforementionned paper</p>
Selection in space and time: individual tree growth is adapted to tropical forest gap dynamics
<p>In the present study, we assessed genotypic diversity within closely-related sympatric tree species belonging to the widespread tropical tree species complex <em>Symphonia globulifera</em>. We addressed the fine-scale spatial and temporal genetic adaptations of individuals through differential growth strategies in response to forest gap dynamics. We finally compared the breadth of successional niches encountered by <em>Symphonia</em> species to other locally abundant species. Combining tree diameter censuses, indirect measures of light environment of the recent past and present, and single nucleotide polymorphisms (SNPs), we used population genomics, environmental association analyses, genome wide association and growth modelling to address the following questions:</p> <ul> <li>Are individual genotypes structured by the mosaic of light and competition environments resulting from forest gap dynamics?</li> <li>Is the growth of individuals determined by genotypes?</li> <li>Is there an association between genotypic adaptations to gap dynamics and to growth?</li> <li>How are genotypic adaptations to gap dynamics and to growth structured in time, i.e., across life stages?</li> <li>Are breadths of successional niches for <em>Symphonia</em> species wider than those of other locally abundant species?</li> </ul> <p>Find the analyses here : https://sylvainschmitt.github.io/GOING/introduction.html</p>
Tropical Forest Monitoring: Challenges and Recent Progress in Research
<p>Data accompanying: </p> <p><em>Remote Sens.</em> <strong>2021</strong>, <em>13</em>(12), 2252; <a href="https://doi.org/10.3390/rs13122252">https://doi.org/10.3390/rs13122252</a></p>
ScienceDex guides
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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.