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47 results for “marine resources”
A phylogenomics resource for the marine diatom Pseudo-nitzschia multistriata
<p>The resource contains phylogenetic trees built from approximately 9000 <em>P. multistriata </em>genes, comparing them to their orthologs (over 2 million sequences) across major taxa of archaea, bacteria and eukaryotes (Basu et al., 2017). For each orthologous group a tree is built twice using two different substitution models. Each sequence within a tree is given a specific ID which is a combination of a unique number along with a taxonomy code, for example "alla_stramenopile|34" signifies </p> <p> </p> <p>1) alla: organism Albugo laibachii.</p> <p>2) stramenopile: broad taxonomic class.</p> <p>3) 34: protein ID for Albugo laibachii DNA topoisomerase 2.</p> <p> </p> <p>The mapping between <em>Pseudo-nitzschia multistriata</em> proteins and the phylogenetic trees is present in the file "p.multistriata_gene_tree.txt". The detailed description of each protein ID given in any phylogenetic tree is present in the file "geneDB.txt". The phylogenetic trees generated using JTT and WAG substitution models of the FastTree program as present in the folders "treeJTT", "treeWAG".</p>
Mateo-Ramírez et al Species_Chapter 25_Alboran Sea-Ecosystems and Marine Resources
<p>Lists of species include in conservation agreements or relevant by their singularity present in MPA and KBA of Alboran Sea and adjacent areas. </p> <p>This dataset is part of the Chapter 25 Marine Protected Areas and Key Biodiversity Areas of the Alboran Sea and Adjacent Areas. In J. C. Baéz et al. (eds.), Alboran Sea - Ecosystems and Marine Resources, https://doi.org/10.1007/978-3-030-65516-7_25</p>
Ecological forecasts for marine resource management during climate extremes
<p><span>Forecasting weather has become commonplace, but as society faces novel and uncertain environmental conditions there is a critical need to forecast ecology. Forewarning of ecosystem conditions during climate extremes can support proactive decision-making, yet applications of ecological forecasts are still limited. We showcase the capacity for existing marine management tools to transition to a forecasting configuration and provide skilful ecological forecasts up to 12 months in advance. The management tools use ocean temperature anomalies to help mitigate whale entanglements and sea turtle bycatch, and we show that forecasts can forewarn of human-wildlife interactions caused by unprecedented climate extremes. <span>We further show that regionally downscaled forecasts are not a necessity for ecological forecasting and can be less skilful than global forecasts if they have fewer ensemble members.</span> Our results highlight capacity for ecological forecasts to be explored for regions without the infrastructure or capacity to regionally downscale, ultimately helping to improve marine resource management and climate adaptation globally.</span></p>
Fig. 2 in South American Sea Lions Otaria flavescens, a good indicator of relative spatial and temporal changes in the distribution and abundance of marine resources?
Fig. 2. Frequency of occurrence of the main prey taxa in the diet of Otaria flavescens (Shaw, 1800) from the San MatÍas Gulf, Argentina.
Resource allocation to a structural biomaterial: induced production of byssal threads decreases growth of a marine mussel
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Ecological forecasts for marine resource management during climate extremes
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Data from: Predator-driven behavioral shifts in a common lizard shape resource-flow from marine to terrestrial ecosystems
<p>We conducted a field experiment to assess foraging niche dynamics of semiarboreal brown anole lizards in the presence/absence of predatory ground-dwelling curly tailed lizards in a replicated set of island ecosystems. Data used in this study includes ecological infomration for the replicated islands of study (i.e. relative arthropod and seaweedabundances) together with phenotypic data of the lizards studied (body mass, size, body condition, as well as behavioral traits describing risk-taking behavior) as well as habitat use data and marine component of diet as a surrogate of the diet of these lizards. One year after experimental translocation, brown anoles exposed to these predators increased perch height and reduced consumption of marine-derived food resources. We also use this dataset to investigate if this foraging niche shift altered marine-to-terrestrial resource-flow dynamics and persisted in the diets of the first-generation offspring. Finally, we also assessed if lizards that displayed more risk-taking behaviors consumed more marine prey on islands with predators present.</p>
Data from: Inter- and intrapopulation resource use variation of marine subsidized western fence lizards
<p>Marine resource subsidies can alter consumer dynamics of recipient populations in coastal systems. The response to these subsidies by generalist consumers is often not uniform, resulting in inter- and intrapopulation diet variation and niche diversification that may be intensified across heterogeneous landscapes.</p> <p>We sampled western fence lizards, <em>Sceloporus occidentalis</em>, from Puget Sound beaches and from coastal and inland forest habitats, as well as the lizards' marine and terrestrial prey items to quantify marine and terrestrial resource use with stable isotope analysis (SIA) and mixing models.</p> <p>Isotopic results reveal beach lizards had higher average δ<sup>13</sup>C and δ<sup>15</sup>N values compared to coastal and inland forest lizards, exhibiting a strong mixing line between marine and terrestrial prey items. Across five beach sites, lizard populations received 20 to 51% of their diet from marine resources, on average, with individual lizards ranging between 7% and 86% marine diet.</p> <p>The hillslope of the transition zone between marine and terrestrial environments at beach sites was positively associated with marine-based diets, as beach sites with the steepest slopes had the highest percent marine diets. Additionally, within-beach variation in transition zone slope was positively correlated with the isotopic niche space of beach lizard populations. Together, these results demonstrate that the physiography of transitional landscapes can mediate resource flow between environments, and variable habitat topography promotes niche diversification within a lizard population.</p> <p>Marine resource subsidization of Puget Sound beach <em>S. occidentalis </em>populations may facilitate occupation of the northwesternmost edge of the species range. </p> <p>Human impacts to the physiography of Puget Sound beaches, such as shoreline armoring, may influence the quantity of driftwood habitat available to support the unique ecology of beach-dwelling <em>S. occidentalis</em>. This highlights the importance of shoreline restoration, and conservation of intact beach habitat.</p>
Energetic constraints on body-size niches in a resource-limited marine environment
<p><span>Body size of life on Earth spans many orders of magnitude, and with it scales the energetic requirements of organisms. Thus, changes in environmental energy should impact community body-size distributions in predictable ways by reshaping ecological and niche dynamics. We examine how carbon, oxygen, and temperature, three energetic drivers, impact community size-based assembly in deep-sea bivalves. We demonstrate that body-size distributions are influenced by multiple energetic constraints. Relaxation in these constraints leads to an expansion of body-size niche space through the addition of novel large size classes, increasing the standard deviation and mean of the body-size distribution. With continued Anthropogenic increases in temperature and reductions in carbon availability and oxygen in most ocean basins, our results point to possible radical shifts in invertebrate body size with the potential to impact ecosystem function.</span></p>
Seascapes and foraging success: movement and resource discovery by a benthic marine herbivore
<p>1. Spatially concentrated resources result in patch-based foraging, wherein the detection and choice of patches as well as the process of locating and exploiting resource patches involve moving through an explicit landscape composed of both resources and barriers to movement. An understanding of behavioural responses to resources and barriers is key to interpreting observed ecological patterns.</p> <p>2. We examined the process of resource discovery in the context of a heterogeneous seascape using sea urchins and drift kelp in urchin barrens as a model system. Under field conditions, we manipulated both the presence of a highly valuable resource (drift kelp) and a barrier to movement (sandy substratum) to test the interacting influence of these two factors on the process of resource discovery in barren grounds by urchins. We removed all foraging urchins (Strongylocentrotus droebachiensis) from replicate areas and monitored urchin recolonization and kelp consumption. We tested two hypotheses: 1) unstable substratum is a barrier to urchin movement and 2) the movement behaviour of sea urchins is modified by the presence of drift kelp.</p> <p>3. Very few urchins were found on sand, sand was a permeable barrier to urchin movement, and the permeability of this barrier varied between sites. In general, partial recolonization occurred strikingly rapidly, but sand slowed the consumption of drift kelp by limiting the number of urchins. Differences in the permeability of sand barriers between sites could be driven by differences in the size structure of urchin populations, indicating size-specific environmental effects on foraging behaviour.</p> <p>4. We demonstrate the influence of patchy seascapes in modulating grazing intensity in barren grounds through modifications of foraging behaviour. Behavioural processes modified by environmental barriers play an important role in determining grazing pressure, the existence of refuges for new algal recruits, and ultimately the dynamics of urchin-algal interactions in barren grounds.</p>
Constructing visualization tools and training resources to assess climate impacts on the channel islands national marine sanctuary NetCDF files
<p>The Channel Islands Marine Sanctuary (CINMS) comprises 1,470 square miles surrounding the Northern Channel Islands: Anacapa, Santa Cruz, Santa Rosa, San Miguel, and Santa Barbara, protecting various species and habitats. However, these sensitive habitats are highly susceptible to climate-driven 'shock' events which are associated with extreme values of temperature, pH, or ocean nutrient levels. A particularly devastating example was seen in 2014-16, when extreme temperatures and changes in nutrient conditions off the California coast led to large-scale die-offs of marine organisms. Global climate models are the best tool available to predict how these shocks may respond to climate change. To better understand the drivers and statistics of climate-driven ecosystem shocks, a 'large ensemble' of simulations run with multiple climate models will be used. The objective of this project is to develop a Python-based web application to visualize ecologically significant climate variables near the CINMS. The web application will be used by researchers from the University of California, Santa Barbara (UCSB) to analyze climate model output, and by CINMS staff to develop new indicators of shocks to marine ecosystems.</p>
Fig. 1 in South American Sea Lions Otaria flavescens, a good indicator of relative spatial and temporal changes in the distribution and abundance of marine resources?
Fig. 1. Study area showing the location of the rookeries analysed at RÍo Negro Province, Argentina.
Freshwater and Marine Image Bank, University Libraries, U Washington: Original zip resource
The Freshwater and Marine Image Bank is a digital collection from the University of Washington Libraries of images related to freshwater and marine topics, in all their diversity. It includes images of fish, shellfish, and marine mammals, pictures of fish hatcheries and dams and vessels, materials related to polar exploration, regional and traditional fisheries, and limnological (freshwater) subjects. Its scope is global. <p></p>http://content.lib.washington.edu/fishweb/index.html<p></p>
Marine Life in the Koh Phangan vicinity, Thailand: Resource (729) DwCA
<p>We__ve spent several years photographing and attempting to classify the marine life of our area, to provide an accurate reference for our divers and a record of a dwindling resource.</p> <p> </p> <p>http://www.chaloklum-diving.com/marine-life-guide-koh-phangan</p> <p> </p>
Channelling of basal resources and use of allochthonous marine carbon by soil arthropods of the Wadden Sea salt marsh
<p>Salt marshes are located between the marine and terrestrial systems. Because they form as sediment accumulates, they comprise a gradient of shore height with differing inundation frequencies and associated abiotic soil conditions. Along this gradient, both autochthonous vascular plant resources and allochthonous marine algal or detrital resources are available, with the availability of both varying with season and salt marsh zone. However, little is known about the importance of either resource for the soil animal food web. We investigated both spatial and temporal resource use of the soil macro- and mesofauna of the salt marsh using neutral lipid fatty acids (NLFAs). Generally, irrespective of season and zone the soil animal food web relied on carbon originating from autochthonous vascular plants and associated bacteria and fungi, with the role of bacteria generally exceeding that of fungi. However, the channelling of fungal resources consistently peaked in October, whereas seasonal changes in the channelling of plant and bacterial resources varied among salt marsh zones. Further, variations in the channelling of resources with season and zone varied among salt marsh animal species. Although being only minor, allochthonous resources of marine origin contributed to soil food web nutrition across salt marsh zones and seasons. The contribution of algae to soil food web nutrition depended on inundation frequency and season, i.e. algal productivity. Overall, the results demonstrate that the salt marsh soil fauna predominantly relies on autochthonous vascular plant resources, with the contribution of allochthonous marine resources being minor and restricted to few taxa.</p>
Model output for "A high-resolution physical-biogeochemical model for marine resource applications in the Northwest Atlantic (MOM6-COBALT-NWA12)"
<p>This dataset contains the numerical model output files that were used in the analysis presented in "A high-resolution physical-biogeochemical model for marine resource applications in the Northwest Atlantic (MOM6-COBALT-NWA12)", submitted to Geoscientific Model Development.</p>
Seascapes and foraging success: movement and resource discovery by a benthic marine herbivore
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Aggregative responses of marine predators to a pulsed resource
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Data from: Inter- and intrapopulation resource use variation of marine subsidized western fence lizards
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Channelling of basal resources and use of allochthonous marine carbon by soil arthropods of the Wadden Sea salt marsh
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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.