Find research datasets worth reusing

Fig. 2 in Intraspecific food resource partitioning in Brazilian silverside Atherinella brasiliensis (Atheriniformes: Atherinopsidae) in a tropical estuary, Brazil

Fig. 2. Box-plot of spatial and temporal variation of number of individuals (CPUE average ±SE) and Biomass (±SE) of A. brasiliensis collected Mamanguape river estuary in Brazil. Bold lines indicate medians, hinges indicate the 25th and 75th percentiles, whiskers indicate the largest and smallest observation within a distance of 1.5 the box size. White bar= Wet season and Dark Gray bar= Dry season.

Fig. 5 in Intraspecific food resource partitioning in Brazilian silverside Atherinella brasiliensis (Atheriniformes: Atherinopsidae) in a tropical estuary, Brazil

Fig. 5. Principal coordinate analysis ordination (PCO) coded by habitat (a) and size classes (b) for Atherinella brasiliensis in the Mamanguape River estuary, Brazil. Symbols Habitat: Mud flat (Full Black Triangle); Tidal Creek 1 (Gray Square); Tidal Creek 2 (Black Circle); Symbols size classes: Small juveniles (Open Black Square); Juveniles (Light Gray Circle) and Adults (Dark Gray Circle).

Fig. 7 in Intraspecific food resource partitioning in Brazilian silverside Atherinella brasiliensis (Atheriniformes: Atherinopsidae) in a tropical estuary, Brazil

Fig. 7. Feeding strategy for Atherinella brasiliensis in Mamanguape river estuary: A= Mudflat; B= Tidal Creek 1 and C= Tidal Creek 2. Food items: Cyc, Cyclopoida; Cal, Calanoida; Dec, Decapoda; Decl, Decapoda larvae; Hym, Hymnoptera; Egf, Fish eggs; Cer, Ceratopogonidae larvae; Ost, Ostracoda; Gas, Gastropoda; Pol, Polychaeta; Esc, Scale. (TL1= small juveniles; TL2= juveniles and TL3= adult).

opencc-by-4.0Nov 2019View details →

Fig. 4 in Food resource partitioning among species of Astyanax (Characiformes: Characidae) in the Lower Iguaçu River and tributaries, Brazil

Fig. 4. Relative frequency (%) of the diet overlap index of Astyanax species pairs in the Low Iguaçu River and tributaries in Brazil. Ab=A. bifasciatus; Ad=A. dissimilis; Ag=A. gymnodontus; Al=A. lacustris; Am=A. minor. Low <0.39; intermediate =0.40-0.59; high> 0.60.

opencc-by-4.0Nov 2019View details →

Fig.1 in Food resource partitioning among species of Astyanax (Characiformes: Characidae) in the Lower Iguaçu River and tributaries, Brazil

Fig.1. Study area showing the sampling sites (numbers 1 to 25) in the Lower Iguaçu River and tributaries in Brazil.

FIG. 15 in Food worthy of kings and saints: fish consumption in the medieval monastery Studenica (Serbia)

FIG. 15. — Sturgeon fishing at the exit of the Danube Gorges, cover of the fourth volume (De Piscibus in Aquis Danubii Viventibus) of L. F. Marsigli's Danubius Pannonico-Mysicus (Marsigli 1726).

FIG. 6 in Food worthy of kings and saints: fish consumption in the medieval monastery Studenica (Serbia)

FIG. 6. — The distribution of mammal, bird and fish remains from medieval contexts at Studenica Monastery (after Marković 2015: 396, fig. 1).

FIG. 4. — Fishing with net from a in Food worthy of kings and saints: fish consumption in the medieval monastery Studenica (Serbia)

FIG. 4. — Fishing with net from a boat, detail of the 13th century fresco from Mileševa Monastery (courtesy of the BLAGO Fund).

FIG. 3 in Food worthy of kings and saints: fish consumption in the medieval monastery Studenica (Serbia)

FIG. 3. — Representation of various fish species, detail of the 14th century fresco from Gračanica Monastery (courtesy of the BLAGO Fund).

opencc-zeroJan 2020View details →

FIG. 15 in The exploitation of molluscs and other invertebrates in Alexandria (Egypt) from the Hellenistic period to Late Antiquity: food, usage, and trade

FIG. 15. — Spider conch (Lambis sp. Röding, 1798) shell from: A, Fouad site; and B, Theater Diana, probably used as a container. Inner side at the top and outer side at the bottom. Scale bar: 10 mm.

opencc-zeroJan 2020View details →

FIG. 14 in The exploitation of molluscs and other invertebrates in Alexandria (Egypt) from the Hellenistic period to Late Antiquity: food, usage, and trade

FIG. 14. — Indo-Pacificmolluscshells: A, Chicoreusramosus Linnaeus, 1758; B, Tridacna maxima (Röding, 1798). Scale bars: 10 mm.

FIG. 2 in Animal food during the Late Prehispanic Period at Sierras of Córdoba, Argentina. A zooarchaeological view from Boyo Paso 2

FIG. 2. — Plain view of the archaeological floor from Boyo Paso 2 with the excavation units, post-molds and key features.

FIG. 4 in Animal food during the Late Prehispanic Period at Sierras of Córdoba, Argentina. A zooarchaeological view from Boyo Paso 2

FIG. 4. — Weathering profile for Lama cf. L. guanicoe (Müller, 1776) bones from Boyo Paso 2 (Córdoba, Argentina) (N=79).

opencc-by-4.0Apr 2016View details →

Figure 2 in Food niche of Exomalopsis (Exomalopsis) fulvofasciata Smith (Hymenoptera: Apidae) in Brazilian savannah: the importance of oil-producing plant species as pollen sources

Figure 2. Estimated number of pollen types in each study area using extrapolation curves. ESP: Ecological Station of Panga, MG and SPSCN: State Park of Serra de Caldas Novas, GO.

dryad40/100

Data from: Impacts of nutrient subsidies on salt marsh arthropod food webs: a latitudinal survey

Anthropogenic nutrient inputs into native ecosystems cause fluctuations in resources that normally limit plant growth, which has important consequences for associated foodwebs. Such inputs from agricultural and urban habitats into nearby natural systems are increasing globally and can be highly variable. Despite the global increase in anthropogenically-derived nutrient inputs into native ecosystems, the consequences of variation in subsidy amount on native plants and their associated foodwebs are poorly known. Salt marshes represent an ideal system to address the differential impacts of nutrient inputs on ecosystem and community dynamics because human development and other anthropogenic activities lead to recurrent introductions of nutrients into these natural systems. Previously, we have found in manipulative experiments that arthropod abundance increases in response to nutrient enrichment, with predators being the trophic group most strongly affected. We conducted a survey of Atlantic coastal Spartina marshes to test whether such local responses are indicative of responses at a landscape level. We examined the most abundant arthropod species associated with Spartina coastal marshes that receive variable amounts of anthropogenic nitrogen, and tested how this response varied across different arthropod functional groups (herbivores, epigeic feeders, and predators). Similar to what we found at a local scale, nutrient subsidies alter the trophic structure of the arthropod assemblage by changing the relative abundances of various feeding groups. Variable responses among predators to nitrogen density could be partly explained by diet breadth (e.g. generalists vs. specialists). Herbivores had a negative response to increasing plant nitrogen density; specialist predators tracked their herbivore prey and thus also responded negatively to nitrogen density. However, generalists were not negatively affected by nitrogen density and indeed some generalist predators responded positively to nitrogen density. Thus, the overall predator-to-herbivore ratio was also positively associated with nitrogen density. Our research helps us to understand how long-term nutrient enrichment of native ecosystems by human activities affects arthropod assemblages and foodweb dynamics.

opencc-zeroSep 2020View details →

opencc-by-4.0Sep 2020View details →

Dataset of BPA concentration levels in food from the second French total diet study

Information about the BPA data set   1. Description of the total diet study 2 (TDS2) and the BPA study The French TDS2 consisted in collecting food products representative of the French population's consumption. This kind of study has been recommended by the World Health Organization (WHO) and the European Food Safety Authority (EFSA) and are implemented with standardized methods. The collected foods were prepared “as consumed” to take account of the population’s common practices, they were combined as composite/pooled samples and were analyzed for chemicals of public health interest. The aims of the TDS2 were to assess the population's exposure to the analyzed substances and the risk for the substances for which reference values exist. To achieve these objectives nearly 20,000 food products were purchased in about 30 cities throughout France (metropolitan territory) and prepared to constitute 1,319 samples corresponding to 212 food items (Sirot et al, 2009). Each sample was composed of 15 sub-samples of the same food and mass, considering different brands and consumer food preferences. All samples, except a few, were collected twice during the TDS to reflect the potential seasonal variability in composition or contamination. Some foods were also purchased in different regions of France because of the potential regional differences in contamination. Analysis of BPA contamination levels in food was not initially planned in the TDS2, and was conducted in a second wave of analyses. The laboratory (LABERCA) in charge of analysis verified that sample containers did not contain BPA. Some TDS samples had not a sufficient weight to be analyzed so only 207 food items were considered.   2. Description of the data set The dataset presents the BPA contamination levels at the food item level, i.e. seasonal sample values were averaged at the regional level and then regional sample values were averaged to represent the national level. The original regional dataset is available in French at the following URL <a href="https://www.data.gouv.fr/fr/datasets/r/4b911e97-368b-4b0e-8891-cecd81aa39bb">https://www.data.gouv.fr/fr/datasets/r/4b911e97-368b-4b0e-8891-cecd81aa39bb</a>. The analytical methods and limits (limit of detection and quantification) are described in (Bemrah et al 2014).   2.1. Pre-processing of concentration data Left censored data (concentration value below the analytical limits) were managed under 3 hypotheses: <ul> <li>The lowerbound (LB) hypothesis: Concentrations below the LOD (undetected substances) were replaced by 0, and concentrations below the LOQ but above the LOD (known as "traces") were replaced by the LOD value;</li> <li>The middlebound (MB) hypothesis: Concentrations below the LOD were replaced by ½ LOD, and concentrations below the LOQ but above the LOD were replaced by ½ (LOD+LOQ) ;</li> <li>Upperbound (UB) hypothesis: Concentrations below the LOD were replaced by the LOD value, and concentrations below the LOQ but above the LOD were replaced by the LOQ.</li> </ul>   2.2. Thesaurus The variables of the dataset and their definitions were presented in the list below: <ul> <li>family: name of the chemical group of the substance;</li> <li>subst: abbreviated name of the substance;</li> <li>subst_cn: complete name of the substance;</li> <li>unit: unit of the mean concentration value of the substance;</li> <li>mean_CONTA_LB: mean of the concentration values of sub-samples of the analyzed food calculated under the lower bound hypothesis;</li> <li>mean_CONTA_MB: mean of the concentration values of sub-samples of the analyzed food calculated under the middle bound hypothesis;</li> <li>mean_CONTA_UB: mean of the concentration values of sub-samples of the analyzed food calculated under the upper bound hypothesis;</li> <li>Food_code: identification number of the analyzed food;</li> <li>Food_group: food category of the analyzed food;</li> <li>Type_foods: analyzed food.</li> </ul>

opencc-by-4.0Oct 2020View details →

Halal Food Product Dataset

The turtle of Linked Open Data Halal dataset  <a href="http://halal.addi.is.its.ac.id/">http://halal.addi.is.its.ac.id/</a> Funded by Institut Teknologi Sepuluh Nopember number 1168/PKS/ITS/2019

dryad40/100

Disentangling ecological and taphonomic signals in ancient food webs

Analyses of ancient food webs reveal important paleoecological processes and responses to a range of perturbations throughout Earth's history, such as climate change. These responses can inform our forecasts of future biotic responses to similar perturbations. However, previous analyses of ancient food webs rarely accounted for key differences between modern and ancient community data, particularly selective loss of soft-bodied taxa during fossilization. To consider how fossilization impacts inferences of ancient community structure we (1) analyzed node-level attributes to identify correlations between ecological roles and fossilization potential and (2) applied selective information loss procedures to food web data for extant systems. We found that selective loss of soft-bodied organisms has predictable effects on the trophic structure of "artificially fossilized" food webs, because these organisms occupy unique, consistent food web positions. Fossilized food webs misleadingly appear less stable (i.e., more prone to trophic cascades), with less predation and an overrepresentation of generalist consumers. We also found that ecological differences between soft- and hard-bodied taxa—indicated by distinct positions in modern food webs—are recorded in an Early Eocene web, but not in Cambrian webs. This suggests that ecological differences between the groups have existed for ≥ 48 million years. Our results indicate that accounting for soft-bodied taxa is vital for accurate depictions of ancient food webs. However, the consistency of information loss trends across the analyzed food webs means it is possible to predict how the selective loss of soft-bodied taxa affects food web metrics, which can permit better modeling of ancient communities.

opencc-zeroNov 2020View details →