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.

datasets available to search

ShareScore release 0.9.0

Dataset results

34 results for “open oceans”

Learn how ShareScore rates datasets ↗

dryad32/100

Environmental DNA provides quantitative estimates of Pacific hake abundance and distribution in the open ocean.

<p>All species inevitably leave genetic traces in their environments, and the resulting environmental DNA (eDNA) reflects the species present in a given habitat. It remains unclear whether eDNA signals can provide quantitative metrics of abundance on which human livelihoods or conservation successes depend. Here, we report the results of a large eDNA ocean survey (spanning 86,000 km<sup>2</sup> to depths of 500m) to understand the abundance and distribution of Pacific hake <em>Merluccius </em><em>productus</em>, the target of the largest finfish fishery along the west coast of the United States. We sampled eDNA in parallel with a traditional acoustic-trawl survey to assess the value of eDNA surveys at a scale relevant to fisheries management. Despite local differences, the two methods yield comparable information about the broad-scale spatial distribution and abundance. Furthermore, we find depth and spatial patterns of eDNA closely correspond to acoustic-trawl estimates for hake. We demonstrate the power and efficacy of eDNA sampling for estimating abundance and distribution and move the analysis eDNA data beyond sample-to-sample comparisons to management relevant scales. We posit that eDNA methods are capable of providing general quantitative applications that will prove especially valuable in data- or resource-limited contexts.</p>

opencc-zeroMar 2022View details →

dryad32/100

Data for: Linking vertical movements of large pelagic predators with distribution patterns of biomass in the open ocean

<p>Many predator species make regular excursions from near-surface waters to the twilight (200-1,000 m) and midnight (1,000-3,000 m) zones of the deep pelagic ocean. While the occurrence of significant vertical movements into the deep ocean has evolved independently across taxonomic groups, the functional role(s) and ecological significance of these movements remain poorly understood. Here, we integrate results from satellite tagging efforts with model-predictions of deep prey layers in the North Atlantic Ocean to determine if prey distributions are correlated with vertical habitat use across 12 species of predators. Using 3D movement data for 344 individuals that traversed nearly 1.5 million km of pelagic ocean in >42,000 days, we found that nearly every tagged predator frequented the twilight zone and many made regular trips to the midnight zone. Using a predictive model, we found clear alignment of predator depth use with the expected location of deep pelagic prey for at least half of the predator species. We compared high-resolution predator data with shipboard acoustics and selected representative matches that highlight the opportunities and challenges in the analysis and synthesis of these data. While not all observed behavior was consistent with estimated prey availability at depth, our results suggest that deep pelagic biomass likely has high ecological value for a suite of commercially important predators in the open ocean. Careful consideration of the disruption to ecosystem services provided by pelagic food webs is needed before the potential costs and benefits of proceeding with extractive activities in the deep ocean can be evaluated.</p>

opencc-zeroOct 2023View details →

dryad32/100