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.
38
datasets available to search
ShareScore release 0.9.0
Dataset results
38 results for “Floodplain forest”
Data from: Massive structural redundancies in species composition patterns of floodplain forest moths
Terrestrial arthropod communities usually consist of very large species numbers. Data from experiments or long time-series would be required to ascertain the functional significance of individual species. Both are largely unavailable for species-rich natural communities. Recognising structural redundancies in species composition allows for an alternative approach to address how strong functional redundancy might be in natural assemblages, if structural and functional redundancies are related to each other. Determining structural redundancies is a regular topic in aquatic ecology, but has rarely been applied to terrestrial communities. We explored the extent of structural redundancy in species-rich terrestrial insect assemblages and whether structural redundancies are contingent to species abundances or functional group affiliations. We used the BVSTEP algorithm to determine structural redundancies in a large data set of moth species (32 181 individuals; 448 species) that had been sampled with light-traps in three different floodplain forests in eastern Austria. We partitioned the moth species into 12 functional types based on larval host-plant affiliations to test if moth species included in reduced subsets represent functional groups in the same proportions as they occur in the entire fauna. We observed far more massive structural redundancies in moth assemblages than previously found in aquatic communities. Subsets containing only 8–15 species (1.8–3.3% of all recorded species) were still highly representative for the overall data. Subsets selected by the BVSTEP procedure performed better than equally small subsets that were defined solely by species abundances or by functional group affiliations. Effective 'surrogate' subsets contained only 6–9 of the 12 functional moth types. High abundance only loosely corresponded with the frequency at which a moth species was included in the subsets. Thus, certain uncommon species contribute importantly to species composition patterns. Our results show unexpectedly extensive structural redundancies in complex floodplain forest moth communities, which may also indicate strong functional redundancies.
Contrasting responses of forest phenological guilds to complex floodplain change
<p>Understanding the seasonal dynamics of the forest herb layer and the factors that influence it is essential for predicting how the forest ecosystem, including mutualistic interactions, will respond to global change. However, to date, no research has investigated how understorey phenological guilds respond to major environmental threats and forest interventions. We showed the marked changes in the phenological structure of floodplain forest plant communities over half a century at a multi-regional scale in Central Europe. Unlike previous studies focusing on individual species' responses to climate change, we examined shifts in species richness, frequency, and abundance between phenological guilds within the plant community. We examined the effects of temporal variation in climate, hydrology, soil conditions, and canopy structure, and assessed the effects of no-intervention and intervention management on phenological guild responses. Our results show a significant loss of local species richness and a decline in species frequency in the forest understorey vegetation, associated with species exhibiting summer phenology. In contrast, an increase in abundance and richness of spring flowering species was observed, attributed to high nutrient loads and reduced flooding, respectively. The abundance of spring species increased only in stands where canopy cover increased over time, probably due to the suppression of summer flowering species, allowing spring flowering species to spread on open bare ground. The community experienced a shift in maximum flowering plant richness from June to May. Despite management interventions such as clear-cutting and tree planting, our data show similar temporal trajectories in intervention and non-intervention forests, indicating that changes in phenological structure are largely independent of recent management activities.</p> <p><em>Synthesis.</em> We propose that a complex interplay of environmental factors, rather than climate change alone, is shaping shifts towards earlier phenological guilds in floodplain forests. This study highlights the importance of considering a comprehensive view of phenological guild dynamics and the impact of environmental factors on forest plant community structure in the face of global change.</p>
Why forest fails to recover after repeated wildfires in Amazonian floodplains? Experimental evidence on tree recruitment limitation
<p>Amazonian floodplain forests are particularly vulnerable to wildfires that spread during extreme droughts, causing large scale forest dieback. After a second wildfire, these forests persist trapped with low tree cover and empty seed banks, yet the mechanisms that could explain this arrested succession remain unknown. Here we use a four-year field experiment to test whether tree recruitment failures in burnt floodplain forests are caused by environmental filtering, limiting early seedling emergence and establishment. We sowed seeds and planted seedlings of six floodplain trees with contrasting life strategies, and tested the roles of environmental filters by comparing tree seedling performances under different habitats (i.e. unburned forest, forest edge with burnt site, forest burnt once and forest burnt twice), and by manipulating soil root mats and herbaceous cover. Our results show that seedling emergence was around 15 % across all habitats. In general, seedlings performed best in burnt forests. Seedling growth was highest in forests burnt once, possibly because of high nutrient availability after fire. In forests burnt twice, tree seedlings grew relatively less, as nutrients become limiting due to flood erosion; yet, seedlings survived longer, possibly because of lower competition with sparse, naturally recruiting trees. We found similar patterns for seedlings that emerged in the field from sowed seeds. Synthesis: Our experimental evidence suggests that environmental filtering related to soil nutrient limitations may slow down forest recovery after repeated wildfires. Yet, our findings showing that floodplain trees are able to germinate from seeds and establish successfully in twice burnt forests suggest that seed limitation may be the reason why forest recovery fails persistently. A corollary to the problem is that repeatedly burnt forests seem to be trapped by a self-reinforcing feedback, in which low tree cover reduces seed dispersal and consequently seed availability, keeping tree cover low. Overall, our findings indicate that active restoration initiatives based on seeding native tree species may help accelerating the recovery of degraded floodplain forests after repeated wildfires.</p>
Fish on fire: Shifts in Amazonian fish communities after floodplain forest fires
<ol> <li>Severe droughts can lead to fires that cause massive tree mortality in even the wettest and most isolated Amazonian forests. After repeated fires, blackwater floodplain forests can remain in an open vegetation state of arrested succession that facilitates a transition towards a white-sand "savanna-like" vegetation. These vegetation shifts from closed-canopy floodplain forests to open fire scars, and eventually white-sand savannas, may have profound implications for fish communities that depend on floodplain forests for food and recruitment. In turn, changes in fish communities may contribute to the arrested forest recovery after fires as fish are important seed dispersal agents for many floodplain tree species.</li> <li>To explore the impacts of floodplain forest fires on fish communities, we sampled fish in unburnt forests, fire scars, and white-sand savannas in the middle Rio Negro basin (Brazil) during two consecutive flooding seasons. We compared the abundance, species richness, and the taxonomic and trophic composition of fish assemblages across the three habitat types. </li> <li>We found significant shifts in fish assemblages in fire scars compared to unburnt floodplain forests. Also, as fire scars increased in size, total fish biomass decreased strongly. Fish communities in unburnt floodplain forests seem to be characterized by a higher proportion of smaller and omnivorous fish species than fish communities in burned floodplain forests and white sand savannas. Fish assemblages in fire scars and white-sand savanna were not significantly different.</li> <li> <em>Synthesis and Applications</em>. Amazonian fish communities change after floodplain forest fires. Unburnt forests have diverse fish communities, with a large proportion of unique and small omnivorous species. In contrast, carnivores and detritivores become more common in fire scars and white-sand savannas formed after forest fires. Less omnivore fish after forest fires can reduce tree seed dispersal and forest regeneration, affecting ecosystem functioning and the services provided by Amazonian forests. Fish are also a primary source of food and income for people living in Amazonian floodplains. Preventing forest fires is therefore of fundamental importance for the conservation of Amazonian aquatic and terrestrial ecological communities as well as for the livelihood of people. </li> </ol>
Contrasting responses of forest phenological guilds to complex floodplain change
Open the record for dataset details and reuse information.
Data from: Relationships between forest cover and fish diversity in the Amazon River floodplain
Open the record for dataset details and reuse information.
Data from: Massive structural redundancies in species composition patterns of floodplain forest moths
Open the record for dataset details and reuse information.
Data from: Quantifying flooding regime in floodplain forests to guide river restoration
Open the record for dataset details and reuse information.
Data from: Using river color to predict Amazonian floodplain forest avifauna in the world’s largest black-water river basin
Open the record for dataset details and reuse information.
Why forest fails to recover after repeated wildfires in Amazonian floodplains? Experimental evidence on tree recruitment limitation
Open the record for dataset details and reuse information.
Fish on fire: Shifts in Amazonian fish communities after floodplain forest fires
Open the record for dataset details and reuse information.
Data from: Effects of a major Amazonian river confluence on the distribution of floodplain forest avifauna
<p><strong>Aim</strong>: Although "river color" or water type is an important determinant of Amazonian floodplain biodiversity, the relevance of mixing distinct water types at river confluences to the distribution of terrestrial floodplain fauna has been largely overlooked. We investigated how the influx of a sediment-rich whitewater tributary affects the floodplain forest avifauna along the world's largest blackwater river.</p> <p><strong>Location</strong>: Northwestern Brazilian Amazon</p> <p><strong>Taxon</strong>: Birds</p> <p><strong>Methods</strong>: We sampled floodplain avifauna and retrieved estimates of sediment concentration in the water (the main parameter in river-water classification) at 52 sites, along the Negro (blackwater) and Branco (whitewater) rivers, above and below their confluence. We compared species richness and composition using analyses of variance, ordinations, generalized linear models and indicator species analyses.</p> <p><strong>Results</strong>: Bird species composition on the lower Rio Negro (below the confluence) was distinct from both the upper Negro (above the confluence) and the Branco, and species richness on the Negro increased below the confluence. Typical whitewater bird species occurring on the Branco were found exclusively or predominantly along the left side of the lower Rio Negro, where the Branco's muddy waters seem to be channeled. Overall avian compositional variation among sites was correlated with sediment concentration in the water, a determinant of floodplain forest structure.</p> <p><strong>Main Conclusions</strong>: The influx of the muddy waters of the Rio Branco into the Rio Negro promotes the co-occurrence of bird species that upstream are segregated by river type, increasing species richness at the landscape scale. Rather than just representing a potential blackwater barrier between whitewater systems, the lower Rio Negro comprises a unique biogeographical transition zone, with a mixed avifauna occurring in a mosaic of varied floodplain forest types. Our results suggest that confluences of large rivers of distinct water types represent a significant factor determining species distributional boundaries and geographic patterns of Amazonian floodplain biodiversity.</p>
Supplementary material 5 from: Scheunemann N, Russell DJ (2023) Hydrological regime and forest development have indirect effects on soil fauna feeding activity in Central European hardwood floodplain forests. Nature Conservation 53: 257-278. https://doi.org/10.3897/natureconservation.53.106260
Soil fauna feeding activity of single sites in forest development gradient
Supplementary material 4 from: Scheunemann N, Russell DJ (2023) Hydrological regime and forest development have indirect effects on soil fauna feeding activity in Central European hardwood floodplain forests. Nature Conservation 53: 257-278. https://doi.org/10.3897/natureconservation.53.106260
Soil fauna feeding activity of single sites in hydrology gradient
Supplementary material 3 from: Scheunemann N, Russell DJ (2023) Hydrological regime and forest development have indirect effects on soil fauna feeding activity in Central European hardwood floodplain forests. Nature Conservation 53: 257-278. https://doi.org/10.3897/natureconservation.53.106260
PCA of ecological site parameters of all sites in the forest development gradient
Supplementary material 2 from: Scheunemann N, Russell DJ (2023) Hydrological regime and forest development have indirect effects on soil fauna feeding activity in Central European hardwood floodplain forests. Nature Conservation 53: 257-278. https://doi.org/10.3897/natureconservation.53.106260
PCA plot of sites and environmental parameters of the hydrology gradient
Supplementary material 1 from: Scheunemann N, Russell DJ (2023) Hydrological regime and forest development have indirect effects on soil fauna feeding activity in Central European hardwood floodplain forests. Nature Conservation 53: 257-278. https://doi.org/10.3897/natureconservation.53.106260
Soil parameters of all study sites
Data from: Effects of a major Amazonian river confluence on the distribution of floodplain forest avifauna
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.