Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
141
datasets available to search
ShareScore release 0.7.1
Dataset results
141 results for “forest regeneration”
Light quality and spatial variability influences on seedling regeneration in Hawaiian lowland wet forests
<p>Tropical forest understories tend to be light-limited. The red-to-far-red ratio (R:FR) is a useful and reliable index of light quality and its spatial variability can influence competition between native and non-native seedlings. While percent light transmittance has been quantified in some Hawaiian lowland wet forests (HLWF), no information exists on how the spatial distribution of understory light varies in relation to species invasion, or if patterns of seedling regeneration and light are linked. We measured the R:FR of light in the understory to assess light quality in three HLWF forest types: native-dominated, partially-invaded, and Psidium cattleyanum- (strawberry guava) dominated to quantify light quality in the understory (0-50 cm height). We also identified relationships between light quality and native and non-native seedling presence, diversity, and abundance. Together, these data can help to determine the restoration potential of HLWF. Linear mixed-effect modeling showed that native-dominated forests had significantly greater R:FR than P. cattleyanum-dominated forests, demonstrating a transformation in the light environment with increased invasion. Heterogeneity in R:FR varied more across sites than among forest types. In both native-dominated and partially-invaded forests, there were more native seedlings in the low-quality R:FR (0.0 – 0.40) category and fewer in the medium- (0.41 – 0.70), and high- quality (≥ 0.71) light categories than would be expected by chance, and there were no native seedlings in the P. cattleyanum-dominated forests. Native-dominated forests had greater species richness and abundance of native seedlings than the partially-invaded forests, likely due to propagule availability. However, the spatial clustering of seedlings, the mismatch of native seedlings in light environments less suitable, and a considerable proportion of open high-quality microsites, highlights that conditions are not optimal for native species in HLWF in the long-term.</p> <p><em>Synthesis and applications</em></p> <p>The native-dominated and partially-invaded forests still hold conservation value, despite variation among sites. Seedling additions could be targeted to different R:FR environments and at different spatial scales, but the lack of a strong relationship between R:FR and seedling number suggests that other factors besides light quality should be considered in seedling enrichment or other management activities.</p>
Fig. 2 in For Est Ga Ps E Ffec T On G Ro Und V Ege Tatio N And Forest Regeneration In The Vištytgiris Botanical-Zoological Reserve
Fig. 2. Dominated tree species in small, medium-size and large forest gaps.
Fig. 3 in For Est Ga Ps E Ffec T On G Ro Und V Ege Tatio N And Forest Regeneration In The Vištytgiris Botanical-Zoological Reserve
Fig. 3. Projection coverage of ground vegetation in small, medium-size and large forest gaps.
Dataset: Seed fate, seedling establishment and the role of propagule size in forest regeneration under climate change conditions
<p>This repository contains the files associated with the following article:</p> <p>Badano EI and EJ Sánchez-Montes de Oca. Seed fate, seedling establishment and the role of propagule size in forest regeneration under climate change conditions. <em>Forest ecology and Management</em> 503, Article 119776. <a href="https://doi.org/10.1016/j.foreco.2021.119776">https://doi.org/10.1016/j.foreco.2021.119776</a></p> <p>The first Microsoft Excel file contains a single sheet with the data used to assess whether seed biomass relates with the fresh weight of acorns in the two studied oak species (<em>Quercus viminea</em> and <em>Quercus eduardii</em>). The second Microsoft Excel file contains five sheets with the microclimatic data (photosynthetic photon flux density, air and soil temperature, rainfall and volumetric soil water content) measured at controls under the current climate and climate change simulation plots located in the forest and the abandoned field of each experimental site. The third Microsoft Excel file contains a single sheet with the results of the seed fate experiments. For each oak species, these databases indicate the fresh weight of each acorn and the respective fate of its seed (parasitized by insects, infested by fungi, desiccated or germinated) in controls under the current climate and climate change simulation plots located in forests and abandoned fields. Finally, the fourth Microsoft Excel file contains a single sheet with the results of the seedling development experiments. For each oak species, these databases indicate the fresh weight of each acorn with the respective shoot emergence date of the seedling, the date of seedling dead and the aboveground net growth rate of the seedling in controls under the current climate and climate change simulation plots located in forests and abandoned fields.</p>
Aboveground net primary productivity in regenerating seasonally dry tropical forest: contributions of rainfall, forest age, and soil
<p>Identifying factors controlling forest productivity is critical to understanding forest-climate change feedbacks, modeling vegetation dynamics, and carbon finance schemes. However, little research has focused on productivity in regenerating tropical forest which are expanding in their fraction of global area have an order of magnitude larger carbon uptake rates relative to older forest.</p> <p>We examined aboveground net primary productivity (ANPP) and its components (wood production and litterfall) over ten years in forest plots that vary in successional age, soil characteristics, and species composition using band dendrometers and litterfall traps in regenerating seasonally dry tropical forests in northwestern Costa Rica.</p> <p>We show that the components of ANPP are differentially driven by age and annual rainfall and that local soil variation is important. Total ANPP was explained by a combination of age, annual rainfall, and soil variation. Wood production comprised 35% of ANPP on average across sites and years, and was explained by annual rainfall but not forest age. Conversely, litterfall increased with forest age and soil fertility yet was not affected by annual rainfall. In this region, edaphic variability is highly correlated with plant community composition. Thus, variation in ecosystem processes explained by soil may also be partially explained by species composition.</p> <p>These results suggest that future changes in annual rainfall can alter the secondary forest carbon sink, but that this effect will be buffered by the litterfall flux which varies little among years. In determining the long-term strength of the secondary forest carbon sink, both rainfall and forest age will be critical variables to track. We also conclude that a detailed understanding of local site variation in soils and plant communities may be required to accurately predict the impact of changing rainfall on forest carbon uptake.</p> <p>Synthesis We show that in seasonally dry tropical forests, annual rainfall has a positive relationship with the growth of aboveground woody tissues of trees and that droughts lead to significant reductions in aboveground productivity. These results provide evidence for climate change – carbon cycle feedbacks in the seasonal tropics and highlight the value of longitudinal data on forest regeneration.</p>
Landscape structure, predictability of forest regeneration trajectories, and recovery rate on secondary forests
<p>Abandonment of agricultural lands promotes the global expansion of secondary forests, which are critical for preserving biodiversity and ecosystem functions and services. Such roles largely depend, however, on two essential successional attributes, trajectory and recovery rate, which are expected to depend on landscape-scale forest cover in non- linear ways. This dataset is the synthesis outcome of 22 independent databases from studies of woody plant species recovery as part of the research project entitled "Impacts of landscape structure on secondary tropical forest regeneration". This work aimed to understand the effect of landscape-level disturbance on forest regeneration, specifically through the predictability of trajectories and the recovery rate of these forests.</p> <p>Using a multiscale approach and a large vegetation dataset (843 plots, 3511 tree species) from 22 secondary forest chronosequences distributed across the Neotropics, we show that successional trajectories of woody plant species richness, stem density, and basal area are less predictable in landscapes (4-km radius) with intermediate (40-60%) forest cover than in landscapes with high (>60%) forest cover. This supports theory suggesting that high spatial and environmental heterogeneity in intermediately deforested landscapes can increase the variation in key ecological factors for forest recovery (e.g. seed dispersal, seedling recruitment), increasing the uncertainty of successional trajectories. Regarding the recovery rate, only the species richness is positively related to forest cover in relatively small (1-km radius) landscapes. These findings highlight the importance of using a spatially-explicit landscape approach in restoration initiatives and suggest that these initiatives can be more effective in more forested landscapes, especially if implemented across spatial extents of 1-4 km radius. </p>
Differential effects of ecosystem engineering by the superb lyrebird Menura novaehollandiae and herbivory by large mammals on floristic regeneration and structure in wet eucalypt forests
<p>Ecosystem engineers that modify soil and ground-layer properties exert a strong influence on vegetation communities in ecosystems worldwide. Understanding the interactions between animal engineers and vegetation is challenging when in the presence of large herbivores, as many vegetation communities are simultaneously affected by both engineering and herbivory. The superb lyrebird <em>Menura novaehollandiae</em>, an ecosystem engineer in wet forests of south-eastern Australia, extensively modifies litter and soil on the forest floor. The aim of this study was to disentangle the impacts of engineering by lyrebirds and herbivory by large mammals on the composition and structure of ground-layer vegetation. We carried out a two-year, manipulative exclusion experiment in the Central Highlands of Victoria, Australia. We compared three treatments: fenced plots with simulated lyrebird foraging; fenced plots excluding herbivores and lyrebirds; and open controls. This design allowed assessment of the relative impacts of engineering and herbivory on germination rates, seedling density, vegetation cover and structure, and community composition. Engineering by lyrebirds enhanced the germination of seeds in the litter layer. After two years, more than double the number of germinants were present in 'engineered' than 'non-engineered' plots. Engineering did not affect the density of seedlings, but herbivory had strong detrimental effects. Herbivory also reduced the floristic richness and structural complexity (< 0.5 m) of forest vegetation, including the cover of herbs. Neither process altered the floristic composition of the vegetation within the 2-year study period. Ecosystem engineering by lyrebirds and herbivory by large mammals both influence the structure of forest-floor vegetation. The two-fold increase in seeds stimulated to germinate by engineering may contribute to the evolutionary adaptation of plants by allowing greater phenotypic expression and selection than would otherwise occur. Over long timescales, engineering and herbivory likely combine to maintain a more-open forest floor conducive to ongoing ecosystem engineering by lyrebirds.</p>
Figure 4 in Natural regeneration in Atlantic Forest Fragments: using ants (Hymenoptera: Formicidae) for monitoring a conservation unit
Figure 4. Camponotus cillae recorded for the RPPN Botujuru: (A) front view; (B) dorsal view; (C) side view. regeneration of the older areas provides resources to Another important factor is the potential of conservation those species with more specialized habits. units to discover new species, mainly invertebrates (Liu We underscore the presence of two species, a pos- et al., 2022), a group that lacks inventory data. sible new species of Octostruma Forel, 1912, recorded They also emphasize the need to advance in the idenin the areas with an understory, and Camponotus cillae tification of recorded morphospecies, increase sampling Forel, 1912 (Fig. 4) recorded in Brazil only by the type se- efforts, use other collection techniques to better underries in the state of São Paulo (Botucatu) by Forel in 1912 stand the diversity of ants and other faunal and floristic (Forel, 1912). Data on their biology is scarce in the liter- groups in the RPPN. Moreover, these results also underature. This new record highlights the importance of new score the need for the creation of measures aiming at studies on biodiversity to our comprehension of the dis- preserving the area, given that the urbanization process tribution of species (Janicki et al., 2016). has been intense in the vicinity of the conservation unit. In addition, our results show the potential of RPPN Botujuru; the occurrence of C. cillae and the possible species of Octostruma in the Botujuru RPPN emphasizes the CONCLUSION importance of conservation units for threatened biomes. Fragments of Atlantic Forest found in conservation units The diversity of ants evaluated in this first work, carare important for the preservation of biodiversity, acting ried out with only one collection campaign, indicates as refuge areas for species that suffer from anthropo- that the natural regeneration process is having positive genic pressures such as deforestation and urban growth effects in abandoned areas. The fragments that compose (Gardner et al., 2009; Pardini et al., 2009; Lima et al., 2020), the RPPN Botujuru may prove to be very representative providing resources, even for those rarely collected. of the Alto Tietê region regarding the conservation of the
Figure 3 in Natural regeneration in Atlantic Forest Fragments: using ants (Hymenoptera: Formicidae) for monitoring a conservation unit
Figure 3. Non-metric multidimensional scaling (NMDS) Bray-Curtis type for the areas with 1-4 years (grey), 7-12 years (light green), and 14 years (dark green). (Anosim = 0,0001).
Figure 2 in Natural regeneration in Atlantic Forest Fragments: using ants (Hymenoptera: Formicidae) for monitoring a conservation unit
Figure 2. The number of occurrences of trophic guilds along the regeneration gradient in areas of Eucalyptus sp.: 1-4 years (no understory), located in the buffer zone of RPPN Botujuru – Serra do Itapety; 7-12 years (with an understory composed of shrubby vegetation), and 14 years (with an understory displaying both shrubby and arboreal vegetation).
The potential for natural forest regeneration in tropical regions
<p>Extensive forest restoration is a key strategy to meet nature-based sustainable development goals and provide multiple social and environmental benefits. Yet achieving forest restoration at scale requires cost-effective methods. Tree planting in degraded landscapes is a popular but costly forest restoration method, which often results in less biodiverse forests when compared to natural regeneration techniques under similar conditions. Here, we assess the current spatial distribution of pantropical natural forest (from 2000-2016) and use this information to present the first model of the potential for natural regeneration across tropical forested countries and biomes at 30-meter spatial resolution. We estimate that 215 million hectares - an area greater than the entire country of Mexico - have potential for natural forest regeneration, representing an above-ground carbon sequestration potential of 23.4 Gt CO2 (range 21.1-25.7 Gt) over 30 years. Five countries (Brazil, Indonesia, China, Mexico, and Colombia) account for 52% of this estimated potential, showcasing the need for targeting restoration initiatives that leverage natural regeneration potential. Our results facilitate broader equitable decision-making processes that capitalise on the widespread opportunity for natural regeneration to help achieve national and global environmental agendas. </p> <p><em>File descriptions:</em></p> <p><em>pnv_pct_30m - files named with this prefix are the 30m continuous probability predictions of the potential for natural regeneration, stored as integers representing percentages to minimise file sizes </em></p> <p><em>tile_index_number_map.jpg – corresponding locations of the ‘pnv_pct_30m’ tiles </em></p> <p><em>prop pnv v1 1km.tif - for display purposes only (not used in the Williams et al. analysis) the approximately 1km resolution overview raster representing the proportion of the area of each pixel that has the potential for natural regeneration </em></p> <p><em>pnv_bin_30m.zip - this .zip folder contains the 30m resolution binary predictions (where a value of >0.5 is allocated a value of 1, acknowledging users may prefer to use a different threshold for their context) of areas suitable for natural regeneration </em></p> <p><em>The 30m resolution datasets have been tiled into 10 degree latitude/longitude tiles</em></p>
Data and Code from: Sheltered or suppressed? Tree regeneration in unmanaged European forests
<p><span>Tree regeneration is a key demographic process influencing long-term forest dynamics. It is driven by climate, disturbances, biotic factors, and their interactions. Thus, predictions of tree regeneration are challenging due to complex feedbacks along the wide climatic gradients covered by most tree species. We developed statistical models based on >50,000 recruitment events observed for 24 tree species in an extensive permanent plot network (6,540 plots from 299 unmanaged European temperate, boreal, and subalpine forests) covering a wide climatic gradient. </span></p> <p><span>This repository stores csv files with response and explanatory variables and R-Scripts that are needed to run the analysis and create the figures that are presented in the accompanying article titled "Sheltered or suppressed? Tree regeneration in unmanaged European forests" which was published in Journal of Ecology in 2023.</span></p> <p><span>Our study shows that competition between trees towards climatic stress decreases systematically but depends on species stress tolerance to climate and shade. These findings explain within- and between-species differences in tree recruitment patterns in European temperate forests. Moreover, our findings imply that projections of forest dynamics along wide climatic gradients and under climate change must accommodate both competition and positive interactions, as they strongly affect rates of community turnover.</span></p>
Amazon natural regenerating forest age
<p><strong> We access the land use and land cover time series product available for the Amazon for the year 1985-2019 (MapBiomass collection 6). The MapBiomas is based on the classification of Landsat images, map of annual land use and land cover at 30 m spatial resolution. We initially classified each pixel in each plot within site following MapBiomaClass and we reclassified in Forest, Secondary-forest, deforestation and others for each year in a temporal series 1985-2019.We classified the land cover maps into two categories: forest (including forest and secondary forests) and non-forest (including agriculture and pasture classes).</strong></p>
California subalpine forest post-fire conifer regeneration data
Open the record for dataset details and reuse information.
Data from: Demographic costs and benefits of natural regeneration during tropical forest restoration
Open the record for dataset details and reuse information.
Leaf-cutting ants negatively impact the regeneration of the Caatinga dry forest across abandoned pastures
Open the record for dataset details and reuse information.
Aboveground net primary productivity in regenerating seasonally dry tropical forest: contributions of rainfall, forest age, and soil
Open the record for dataset details and reuse information.
Landscape structure, predictability of forest regeneration trajectories, and recovery rate on secondary forests
Open the record for dataset details and reuse information.
Data from: Climate will increasingly determine post-fire tree regeneration success in low-elevation forests, Northern Rockies, USA
Open the record for dataset details and reuse information.
Divergent trajectories of regeneration in early-successional forests after logging and wildfire
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
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.