Find research datasets worth reusing

publicMar 2021View details →

Symbiodiniaceae cell densities in feces of coral reef fish, sediments and seawater in Mo'orea, French Polynesia, July-August 2019

Open the record for dataset details and reuse information.

publicDec 2019View details →

Using vertebrate environmental DNA from seawater in biomonitoring of marine habitats

Open the record for dataset details and reuse information.

publicOct 2017View details →

Data from: Population characteristics of a large whale shark aggregation inferred from seawater environmental DNA

Open the record for dataset details and reuse information.

publicSep 2021View details →

Divergent responses of symbiotic and asymbiotic N2 fixation to seawater additions

Open the record for dataset details and reuse information.

publicMay 2021View details →

UF pre-treatment of seawater RO feedwater - performance data

Open the record for dataset details and reuse information.

opencc-by-4.0Jun 2015View details →

Figure 5 in Influence of CO -induced seawater acidification on the development and lifetime reproduction of Tigriopus japonicus Mori, 1938

Figure 5. Average number of nauplii per viable egg sac (N = 3) at four pH levels (median indicated with a bar; quartiles, minimum and maximum also shown).

opencc-by-4.0Jun 2015View details →

Figure 1 in Influence of CO -induced seawater acidification on the development and lifetime reproduction of Tigriopus japonicus Mori, 1938

Figure 1. Effect of carbon dioxide (CO2)-induced seawater acidification on development time [mean ± standard deviation (SD), N = 3] of Tigriopus japonicus (N–C, nauplius to copepodite; C–A, copepodite to adult).

opencc-zeroOct 2019View details →

Seawater body dipping behaviour of the Mauritian flying fox

The Mauritian flying fox (Pteropus niger) is the last surviving fruit bat species on Mauritius and is currently Endangered. The species faces threats as only 4.4% of habitats with high native content remains, however highly fragmented and invaded by alien species. Furthermore, stochastic events such as cyclones negatively impact food resources availability and likely encourage flying foxes to explore alternative ways to complement their diet in situation of food shortages. We organized various trips after extensive stochastic events to observe flying foxes attempting to dip their lower body part in the sea. Around 15 seawater body dipping instances were observed. Each time, the flying fox would clumsily dip itself into the water and lick their wet fur immediately after. This shows the species' behavioral versatility and plausibly their resilience ability and local adaptation to particular opportunities within their environment. These observations potentially unravel an alternative way for flying foxes to complement minerals intake. The situation might also emphasize the decline in the species native foraging habitats quality and consequently prompts long-term conservation measures. Restoration of native forests from invasive alien species could maximize diverse native fruits availability all year round, thus limiting chances of food shortages for flying foxes.

opencc-zeroDec 2016View details →

Data from: Seawater environmental DNA reflects seasonality of a coastal fish community

Coastal marine fish populations are in decline due to overfishing, habitat destruction, climate change and invasive species. Seasonal monitoring is important for detecting temporal changes in the composition of fish communities, but current monitoring is often non-existent or limited to annual or semi-annual surveys. In the present study, we investigate the potential of using environmental DNA (eDNA) metabarcoding of seawater samples to detect the seasonal changes in a coastal marine fish community. Water sampling and snorkelling visual census were performed over 1 year (from 23rd of August 2013 to 11th of August 2014) at a temperate coastal habitat in Denmark (55°45′39″N, 12°35′59″E) and compared to long-term data collected over a 7-year period. We used Illumina sequencing of PCR products to demonstrate that seawater eDNA showed compositional changes in accordance with seasonal changes in the fish community. The vast majority of fish diversity observed in the study area by snorkelling was recovered from sequencing, although the overlap between methods varied widely among sampling events. In total, 24 taxa were detected by both methods, while five taxa were only detected using eDNA and three taxa were only detected by snorkelling. A limitation of the applied primers was the lack of resolution to species level in a few diverse families, and varying sequencing depth between samples represents a potential bias. However, our study demonstrates the utility of eDNA for recovering seasonal variation in marine fish communities, knowledge of which is essential for standardised long-term monitoring of marine biodiversity.

opencc-zeroDec 2018View details →

Data from: Acid-base physiology over tidal periods in the mussel Mytilus edulis: size and temperature are more influential than seawater pH

Ocean acidification (OA) studies to date have typically used stable open-ocean pH and CO2 values to predict the physiological responses of intertidal species to future climate scenarios, with few studies accounting for natural fluctuations of abiotic conditions or the alternating periods of emersion and immersion routinely experienced during tidal cycles. Here, we determine seawater carbonate chemistry and the corresponding in situ haemolymph acid-base responses over real time for two populations of mussel (Mytilus edulis) during tidal cycles, demonstrating that intertidal mussels experience daily acidosis during emersion. Using these field data to parameterise experimental work we demonstrate that air temperature and mussel size strongly influence this acidosis, with larger mussels at higher temperatures experiencing greater acidosis. There was a small interactive effect of prior immersion in OA conditions (pHNBS 7.7/pCO2 930 µatm) such that the haemolymph pH measured at the start of emersion was lower in large mussels exposed to OA. Critically, the acidosis induced in mussels during emersion in situ was greater (ΔpH ~0.8 units) than that induced by experimental OA (ΔpH ~0.1 units). Understanding how environmental fluctuations influence physiology under current scenarios is critical to our ability to predict the responses of key marine biota to future environmental changes.

opencc-zeroDec 2016View details →

Data from: Fluctuating seawater pH/ p CO 2 regimes are more energetically expensive than static pH/ p CO 2 levels in the mussel Mytilus edulis

Ocean acidification (OA) studies typically use stable open-ocean pH or CO2 values. However, species living within dynamic coastal environments can naturally experience wide fluctuations in abiotic factors, suggesting their responses to stable pH conditions may not be reflective of either present or near-future conditions. Here we investigate the physiological responses of the mussel Mytilus edulis to variable seawater pH conditions over short- (6 h) and medium-term (2 weeks) exposures under both current and near-future OA scenarios. Mussel haemolymph pH closely mirrored that of seawater pH over short-term changes of 1 pH unit with acidosis or recovery accordingly, highlighting a limited capacity for acid–base regulation. After 2 weeks, mussels under variable pH conditions had significantly higher metabolic rates, antioxidant enzyme activities and lipid peroxidation than those exposed to static pH under both current and near-future OA scenarios. Static near-future pH conditions induced significant acid–base disturbances and lipid peroxidation compared with the static present-day conditions but did not affect the metabolic rate. These results clearly demonstrate that living in naturally variable environments is energetically more expensive than living in static seawater conditions, which has consequences for how we extrapolate future OA responses in coastal species.

opencc-by-4.0Dec 2019View details →

Surface seawater concentration of acetone: monthly climatology

Acetone is one of the most abundant oxygenated volatile organic compounds (VOCs) in the atmosphere. The oceans impose a strong control on atmospheric acetone, yet the oceanic fluxes of acetone remain poorly constrained. The air-sea exchange of acetone is largely controlled by the surface seawater concentration of acetone. This dataset consists of the surface seawater concentration of acetone, predicted by an observationally trained machine-learning algorithm (random forest). The observationally trained machine-learning algorithm is discussed in Wang et al. (2019). The training dataset includes ship-borne observations from a number of previous studies: Yang et al. (2014a); Yang et al. (2014b); Dixon et al. (2014); Beale et al. (2013); Kameyama et al. (2010); Hudson et al. (2007); Marandino et al. (2005); Marandino et al. (Knorr06). This dataset is in 0.9*1.25 (degree*degree) horizontal resolution (finite volume), and can be used to calculate the bi-directional air-sea exchange of acetone.

opencc-by-4.0Nov 2023View details →

Early-age hydration behaviour of Seawater-mixed LWAC

The following files consists of data from the original article "Seawater-Mixed Lightweight Aggregate Concretes with Dune Sand, Waste Glass and Nanosilica: Experimental and Life Cycle Analysis" published in International Journal of Concrete Structures and Materials.Link to access the article at source: https://link.springer.com/article/10.1186/s40069-023-00613-4#article-infoThe data set consists of heat of hydration at an instantaneous time and cumulative heat of hydration up to 7 days  of hydration are included.  Furthermore, the dataset consists of information on the particle size distribution of the raw materials (CEM III and nano-Silica) used in this research work. The origin file consists of three sheet with following information.First sheet consists of Particle size distribution of CEM III and nano Silica.Second sheet consists of cumulative heat of hydration up to 7 days for specimens TW0, SW0, TW3, and SW3.Third sheet consists of heat flow at instantaneous time up to 7 days for specimens TW0, SW0, TW3, and SW3.ID description:TW0 - CEM III mixed with Tap waterSW0 - CEM III mixed with SeawaterTW3 - CEM III + 3% nano-Silica mixed with Tap water SW3 - CEM III + 3% nano-Silica mixed with SeawaterPS - The attached file could be opened only with ORIGIN 2021b or any other compatible versions of the same software

opencc-by-4.0Nov 2024View details →

Seawater temperature and salinity depth profiles (CTD) - SAMS IMTA Lab

Dataset contains depth profiles (0m to 20m below the surface) of seawater temperture and salinity, recorded using a handheld CTD (SonTek CastAway-CTD). Data range spans over 4 years (Oct 2020-2024; ASTRAL H2020 project lifespan) containing 53 sampling occassions i.e. on average montghly CTD casts. Hnadheld CTD was frequently cross-calibrated agianst SAMS in-house Seabird CTD and resulting offests appliced to the raw data recordings.

opencc-by-4.0Apr 2024View details →

The potential of seep carbonates to preserve the seawater isotope compositions

Supplemental information present Supplementary Notes and Supplementary Tables.

opencc-zeroDec 2021View details →

Rapid range expansion of a marine ectotherm reveals the demographic and ecological consequences of short-term variability in seawater temperature and dissolved oxygen

The distributions of marine ectotherms are governed by physiological sensitivities to long-term trends in seawater temperature and dissolved oxygen. Short-term variability in these parameters has the potential to facilitate rapid range expansions, and the resulting ecological and socioeconomic consequences may portend those of future marine communities. Here, we combine physiological experiments with ecological and demographic surveys to assess the causes and consequences of sudden but temporary poleward range expansions of a marine ectotherm with considerable life history plasticity (California market squid, Doryteuthis opalescens). We show that sequential factors related to resource accessibility in the core range may drive these expansions—the buildup of large populations due to competitive release, and climate-associated temperature increase and oxygen loss that constrain aerobic activity. We also reveal that poleward range expansion alters the body size—and therefore trophic role—of invading populations, with potential negative implications for socioeconomically valuable resident species. To help forecast rapid range expansions of marine ectotherms, we advocate that research efforts focus on factors impacting resource accessibility in core ranges. Determining how environmental conditions in receiving ecosystems affect body size, and how body size is related to trophic role, will help refine estimates of the impacts of future marine communities.

opencc-by-4.0Jun 2024View details →

Data for "Integrating high-resolution Sr/Ca and ultrastructural analyses of the Tridacna squamosa shell to reconstruct sub-daily seawater temperature variation"

This repository contains all data generated for the publication "Integrating high-resolution Sr/Ca and ultrastructural analyses of the Tridacna squamosa shell to reconstruct sub-daily seawater temperature variation" currently under review

opencc-by-4.0Feb 2024View details →

Fig. 5 in Refining the Occurrence of Viral Encephalopathy and Retinopathy, Photobacteriosis, and Vibriosis in Connection with Seawater Physicochemical Parameters: A Five-Year Case Study Abstract

Fig. 5: Estimated time series of the probability of absence/presence (0 to 1) based on the model (depicted by a line), alongside on-site records of absence/presence.

opencc-by-4.0Oct 2024View details →

Water quality data and isotope data of groundwater, river water and seawater in the Pearl River Estuary

Open the record for dataset details and reuse information.