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.
41
datasets available to search
ShareScore release 0.7.1
Dataset results
41 results for “Eelgrass”
West Falmouth Harbor Eelgrass Bed Extent, 2010-2019, generalized
West Falmouth Harbor (West Falmouth, MA, USA) has been experiencing a dramatic increase in nitrogen loading from an upgradient municipal wastewater treatment facility since the early 2000’s. As part of a long-term study into the effects of this nitrogen enrichment, we have been assessing changes in the extent and health of the eelgrass (Zostera marina) community within the harbor. We conducted side scan sonar surveys and analyzed them using SonarWiz and ArcGIS to delineate the extent of continuous seagrass bed within the harbor. The goal of this dataset is to assess changes in eelgrass habitat extent; small bare patches within the larger seagrass bed due to anchor scars and mooring scouring were not digitized. Groundtruthing of the edges was done with a combination of diver surveys, underwater video, and surface surveys at low tide. Surveys were run in every year from 2010 through 2022 and we plan to continue them into future years. Data analysis is ongoing and shapefiles will be added as they are run through quality assessment. Details for the 2010 data collection and analysis are detailed in Hayn 2012: Exchange of nitrogen and phosphorus between a shallow estuary and coastal waters, Appendix 3, permanently archived at https://hdl.handle.net/1813/31380.
Isotopes and content of carbon, nitrogen, and sulfur of eelgrass (Zostera marina) from West Falmouth Harbor from 2005 through 2019
West Falmouth Harbor (West Falmouth, MA, USA) has been experiencing a dramatic increase in nitrogen loading from an upgradient municipal wastewater treatment facility since the early 2000’s. As part of a long-term study into the effects of this nitrogen enrichment, we have been assessing changes in the extent and health of the eelgrass (Zostera marina) community within the harbor. Eelgrass shoots were collected during the summer and run for carbon (C), nitrogen (N), and sulfur (S) content and isotopic composition. Samples were analyzed from 7 stations in the more well-flushed outer harbor (OH), 4 stations in the middle of the harbor (MH), and 6 stations in the inner portion of the harbor in close proximity to a high groundwater nitrate source (Snug Harbor, SH). Carbon data is available from 2011 through 2018, nitrogen data from 2006 through 2018, and sulfur data from 2005 through 2019 with a few samples from 2021. Sulfur results have been published in Haviland et al. 2022 (doi: 10.1002/lno.12025).
Survey results for: Public perceptions of cultural ecosystem services provided by beach nourishment and eelgrass restoration in southern Sweden
<p>Ecosystem-based protection is becoming a viable adaptation option to conventional engineered solutions to rising sea levels and coastal erosion. While the environmental and biological ecosystem services provided by ecosystem-based adaptation measures such as beach nourishment and/or seagrass plantations are being acknowledged and analysed, less attention has been paid to the social or cultural dimensions of these services. This paper builds upon the emerging body of research that explores cultural ecosystem services in coastal areas and how they are perceived by the people who live, work and recreate in these areas. The aim of the paper is to take stock of and understand public and stakeholder perceptions of the cultural ecosystem services that may accrue through eelgrass (<em>Zostera marina</em>) restoration in tandem with beach nourishment in Southern Sweden. The empirical research is based on an online open-ended questionnaire in the coastal municipalities of Båstad, Trelleborg, Ystad and Kristianstad. The results demonstrate that virtually all respondents had noticed a change in the coastline in recent years, mainly that the coastline had retreated. While beach nourishment measures were recognized among respondents to counter the shoreline erosion, there was very little understanding of the role that eelgrass plantations can play in creating biodiversity and benefits for society. Still, most acknowledged the importance of making room for water and biodiversity at the coast, stating how the coastline was valued for primarily health and spiritual reasons. This knowledge will help local, regional, and national decision-makers and regulatory authorities to make evidence-based choices for coastal protection, by complementing the analysis of environmental and physical ecosystem-services with cultural and socio-economic considerations. Nature-based solutions such as eelgrass reintroduction or beach nourishment should be tailored to the values, perspectives, and perceptions of the local communities to help ensure their continued contribution to biodiversity.</p>
SeagrassFinder: An Underwater Eelgrass Image Classification Dataset
<p><span>This dataset is published as part of the publishing of the paper “SeagrassFinder: Deep Learning for Eelgrass Detection and Coverage Estimation in the Wild” in the Journal Ecological Informatics. The dataset is created as a machine learning dataset for training computer vision models to classify the presence of eelgrass. </span></p> <p><span>This dataset was created by the main author Jannik Els</span>äßer as part of his bachelor's thesis. The original video transect data in this dataset comes from DHI A/S work providing By og Havn a “Summer Status” report on the maritime environmental impacts of the Lynetteholm project. More information on the project and the report is available here: <span><a href="https://byoghavn.dk/mediebibliotek/lynetteholm-sommerstatus-2023/">https://byoghavn.dk/mediebibliotek/lynetteholm-sommerstatus-2023/</a></span><br><br>The dataset consists of underwater images taken on a sled, dragged through the water by a survey vessel. The camera used is a Subsea HD-Camera made by LH-Camera. Images were created by taking 5 video frames each second, and then randomly sampling. Each image is labeled True or False for eelgrass presence. In total, the dataset consists of 8500 images from 6 different transects, with 4482 images containing eelgrass, and 4042 images not containing eelgrass. All images have been annotated by a both domain-experts, and non-domain experts. Images were annotated using a uniform sampling process. In the occurrence of any disagreement between annotators, images have been removed from the dataset. For more information on the dataset creation, please refer to the corresponding paper.</p> <p>We recommend using one transect as a test dataset, and not using a random split of all images to create the test dataset. When using a random split of all images, a form of data leakage occurs, since some images can be very similar to other images.</p> <p>An unfortunate limitation, we believe caused by the compression of the videos in the camera system, is some frames contain an echo or form of motion trail. This can lead to ghost like eelgrass features in some frames. This should be taken into consideration when applying the dataset in future locations.</p>
Data from: Washington, Oregon, and California eelgrass restoration database
<p><span>Seagrass habitats, which provide essential ecosystem functions such as water quality improvement, biodiversity support, ocean acidification amelioration, and sediment carbon storage, are declining worldwide. Eelgrass (<em>Zostera marina</em>) habitats along the contiguous U.S. west coast are threatened by conflicting human uses and global change, resulting in significant protections and efforts to restore areas where habitat is extant or degraded. Despite a history of eelgrass restoration in this region spanning nearly 60 years, very little work has been published on the subject. Here, we conduct a review of all available literature on eelgrass restoration projects conducted in California, Oregon, and Washington. Of the 82 restoration projects included in this analysis, which occurred from 1989 to 2020, only 6 were published in peer-reviewed journals. Thus, despite the precedent for conducting restoration, a lack of data availability makes assessing regional success, drivers of failure, and best practices extremely difficult. From this synthesis, we find that the majority of restoration projects (73%) have occurred for mitigation (compliance) purposes, contributing to the lack of peer-reviewed literature on the subject. We find that while eelgrass mitigation policies serve to maintain eelgrass structure and regional acreages, they do not facilitate assessments of habitat function or incentivize advancements in regional best practices. We also find that when we could evaluate project outcomes, 32.3 to 59.6% of restoration plots were unsuccessful by the end of the project, but this percentage is highly dependent on how success is defined. According to restoration practitioners, failure was likely to result from environmental factors such as light, nutrients, or macroalgal blooms, but was occasionally due to logistical factors such as restoration method or approach. From this work, we recommend a standardized, evidence-based approach to restoration, improved data sharing practices, and careful consideration of existing eelgrass mitigation practices. As marine habitat restoration enters a new global stage, backed by public and private investment, burgeoning carbon markets, and global biodiversity initiatives, it is essential to learn from past work to understand and improve seagrass conservation and restoration success. </span></p>
Data from: Whole plant disease severity is associated with reduced polyphenolic concentrations in lesioned but not green tissue in eelgrass
Open the record for dataset details and reuse information.
Data from: Washington, Oregon, and California eelgrass restoration database
Open the record for dataset details and reuse information.
Maternal quality, paternal effects, and sibling interactions influence seed size in the eelgrass, Zostera marina
Open the record for dataset details and reuse information.
Plasticity and adaptation of northern California eelgrass in response to sediment conditions
Open the record for dataset details and reuse information.
Data from: Applying eDNA Metabarcoding to assess invertebrate biodiversity of Eelgrass (Zostera marina) meadows across Nova Scotia
Open the record for dataset details and reuse information.
Survey results for: Public perceptions of cultural ecosystem services provided by beach nourishment and eelgrass restoration in southern Sweden
Open the record for dataset details and reuse information.
Data from: A latitudinal cline in the taxonomic structure of eelgrass epifaunal communities is associated with plant genetic diversity
Open the record for dataset details and reuse information.
Empowering regional conservation: Genetic diversity assessments as a tool for eelgrass management
Open the record for dataset details and reuse information.
Data from: Variation in genomic vulnerability to climate change across temperate populations of eelgrass (Zostera marina)
Open the record for dataset details and reuse information.
Data and code associated with: Genomic responses to parallel selection in the eelgrass Zostera marina in adjacent bays
Open the record for dataset details and reuse information.
Newport Bay water quality and eelgrass bed stability
Open the record for dataset details and reuse information.
Data from: Indirect effects of predators control herbivore richness and abundance in a benthic eelgrass (Zostera marina) mesograzer community
1. Herbivore communities can be sensitive to changes in predator pressure (top-down effects) and resource availability (bottom-up effects) in a wide range of systems. However, it remains unclear whether such top-down and bottom-up effects reflect direct impacts of predators and/or resources on herbivores, or are indirect, reflecting altered interactions among herbivore species. 2. We quantified direct and indirect effects of bottom-up and top-down processes on an eelgrass (Zostera marina) herbivore assemblage. In a field experiment, we factorially manipulated water column nutrients (with Osmocote™ slow-release fertilizer) and predation pressure (with predator exclusion cages) and measured the effects on herbivore abundance, richness and beta diversity. We examined likely mechanisms of community responses by statistically exploring the response of individual herbivore species to trophic manipulations. 3. Predators increased herbivore richness and total abundance, in both cases through indirect shifts in community composition. Increases in richness occurred through predator suppression of common gammarid amphipod species (Monocorophium acherusicum and Photis brevipes), permitting the inclusion of rarer gammarid species (Aoroides columbiae and Pontogeneia rostrata). Increased total herbivore abundance reflected increased abundance of a caprellid amphipod species (Caprella sp.), concurrent with declines in the abundance of other common species. Furthermore, predators decreased beta diversity by decreasing variability in Caprella sp. abundance among habitat patches. 4. Osmocote™ fertilization increased nutrient concentrations locally, but nutrients dissipated to background levels within 3 m of the fertilizer. Nutrient addition weakly affected the herbivore assemblage, not affecting richness and increasing total abundance by increasing one herbivore species (Caprella sp.). Nutrient addition did not affect beta diversity. 5. We demonstrated that assemblage-level effects of trophic manipulations on community structure are the result of distinct and often indirect responses of herbivore species. These results underscore the importance of understanding herbivore–herbivore interactions in a system commonly subjected to both eutrophication and overfishing.
Data from: Variation of carbon contents in eelgrass (Zostera marina) sediments implied from depth profiles
Seagrass meadows are able to store significant amounts of organic carbon in their underlying sediment but global estimates are uncertain partly due to spatiotemporal heterogeneity between areas and species. In order to provide robust estimates, there is a need to better understand the fate of, and mechanisms behind, organic carbon storage. In this observational study, we analyse a suite of biotic and abiotic parameters in sediment cores from 47 different eelgrass (Zostera marina) beds spanning the distributional range of the Northern Hemisphere. Depth profiles revealed three patterns of vertical distribution where POC either increased, decreased, or showed no distinct pattern with sediment depth. These categories exhibited distinct profiles of δ13C and C:N ratios, where high POC profiles had a proportionally larger storage of eelgrass-derived material whereas low POC profiles were dominated by phytoplanktonic and macroalgal material. However, high POC did not always translate into high carbon density. Along with better constrained sedimentation rates, these results can ultimately contribute to our understanding of carbon content in seagrass beds.
Data from: Macrobenthic assemblage structure in a cool-temperate intertidal dwarf-eelgrass bed in comparison to those in lower latitudes.
The evolution and ecology of latitudinal patterns in marine macrofaunal biodiversity and assemblage structure are contentious. With the aim of investigating the occurrence of such patterns in intertidal dwarf-eelgrass beds (Nanozostera spp.), those at cool-temperate Scolt Head Island, UK (latitude 52°N), were examined and compared to equivalent systems in warm-temperate Knysna, South Africa (34°S), and subtropical Moreton Bay, Australia (27°S); systems that had earlier been examined using identical methodology. The Scolt Head bed supported the highest faunal density (mean 6,568 0.1m-2), lowest observed and estimated species richness (32 and 33 spp respectively), lowest species diversity (Simpson's Index 0.34), highest mean Constancy Index (23.0), lowest proportion of total numbers contributed by singletons or doubletons (0.06%), largest Berger-Parker Dominance (0.81), and least degree of variability between component samples. The beds at Knysna were intermediate between those at Scolt Head and Moreton Bay in all those respects, as well as in nature and composition of the fauna. Similar dwarf-eelgrass beds at Arcachon, France, likewise appear intermediate between those of Scolt Head and Knysna. Community variance in all three regions was greatest at the smallest spatial scale of ≤1 m, at which scale two of the three also displayed randomly organized faunal assemblages, although this changed to non-random at larger spatial scales. Assemblages were deterministically structured at all spatial scales at Knysna. A consistent series of changes in structural characteristics of macrofaunal dwarf-eelgrass assemblages therefore occurred along the latitudinal sequence of Scolt Head (530): Arcachon (450): Knysna (340): Moreton Bay (270). Community assembly patterns did not change with latitude, however, but did so with spatial scale in two of the three regions.
Data from: Eelgrass (Zostera marina) food web structure in different environmental settings
This study compares the structure of eelgrass (Zostera marina L.) meadows and associated food webs in two eelgrass habitats in Denmark, differing in exposure, connection to the open sea, nutrient enrichment and water transparency. Meadow structure strongly reflected the environmental conditions in each habitat. The eutrophicated, protected site had higher biomass of filamentous algae, lower eelgrass biomass and shoot density, longer and narrower leaves, and higher above to below ground biomass ratio compared to the less nutrient-enriched and more exposed site. The faunal community composition and food web structure also differed markedly between sites with the eutrophicated, enclosed site having higher biomass of consumers and less complex food web. These relationships resulted in a column shaped biomass distribution of the consumers at the eutrophicated site whereas the less nutrient-rich site showed a pyramidal biomass distribution of consumers coupled with a more diverse consumer community. The differences in meadow and food web structure of the two seagrass habitats, suggest how physical setting may shape ecosystem response and resilience to anthropogenic pressure. We encourage larger, replicated studies to further disentangle the effects of different environmental variables on seagrass food web structure.
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.