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90 results for “benthic invertebrate”
Temporal and spatial changes in benthic invertebrate trophic networks along a salinity gradient
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Secondary production increases with species richness but decreases with species evenness of benthic invertebrates
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Comparison of benthic invertebrate body phosphorus determined by ICP-MS and colorimetry
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Data from: Individual weight estimates for Great Lakes benthic invertebrates
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Data from: Ocean warming affected faunal dynamics of benthic invertebrate assemblages across the Toarcian Oceanic Anoxic Event in the Iberian Basin (Spain)
<p>The Toarcian Oceanic Anoxic Event (TOAE; Early Jurassic, ca. 182 Ma ago) represents one of the major environmental disturbances of the Mesozoic and is associated with global warming, widespread anoxia, and a severe perturbation of the global carbon cycle. Warming-related dysoxia-anoxia has long been considered the main cause of elevated marine extinction rates, although extinctions have been recorded also in environments without evidence for deoxygenation. We addressed the role of warming and disturbance of the carbon cycle in an oxygenated habitat in the Iberian Basin, Spain, by correlating high resolution quantitative faunal occurrences of early Toarcian benthic marine invertebrates with geochemical proxy data (δ<sup>18</sup>O and δ<sup>13</sup>C). We find that temperature, as derived from the δ<sup>18</sup>O record of shells, is significantly correlated with taxonomic and functional diversity and ecological composition, whereas we find no evidence to link carbon cycle variations to the faunal patterns. The local faunal assemblages before and after the TOAE are taxonomically and ecologically distinct. Most ecological change occurred at the onset of the TOAE, synchronous with an increase in water temperatures, and involved declines in multiple diversity metrics, abundance, and biomass. The TOAE interval experienced a complete turnover of brachiopods and a predominance of opportunistic species, which underscores the generality of this pattern recorded elsewhere in the western Tethys Ocean. Ecological instability during the TOAE is indicated by distinct fluctuations in diversity and in the relative abundance of individual modes of life. Local recovery to ecologically stable and diverse post-TOAE faunal assemblages occurred rapidly at the end of the TOAE, synchronous with decreasing water temperatures. Because oxygen-depleted conditions prevailed in many other regions during the TOAE, this study demonstrates that multiple mechanisms can be operating simultaneously with different relative contributions in different parts of the ocean.</p>
Data from: RAD sequencing resolves fine-scale population structure in a benthic invertebrate: implications for understanding phenotypic plasticity
The field of molecular ecology is transitioning from the use of small panels of classical genetic markers such as microsatellites to much larger panels of single nucleotide polymorphisms (SNPs) generated by approaches like RAD sequencing. However, few empirical studies have directly compared the ability of these methods to resolve population structure. This could have implications for understanding phenotypic plasticity, as many previous studies of natural populations may have lacked the power to detect genetic differences, especially over micro-geographic scales. We therefore compared the ability of microsatellites and RAD sequencing to resolve fine-scale population structure in a commercially important benthic invertebrate by genotyping great scallops (Pecten maximus) from nine populations around Northern Ireland at 13 microsatellites and 10 539 SNPs. The shells were then subjected to morphometric and colour analysis in order to compare patterns of phenotypic and genetic variation. We found that RAD sequencing was superior at resolving population structure, yielding higher Fst values and support for two distinct genetic clusters, whereas only one cluster could be detected in a Bayesian analysis of the microsatellite dataset. Furthermore, appreciable phenotypic variation was observed in size-independent shell shape and coloration, including among localities that could not be distinguished from one another genetically, providing support for the notion that these traits are phenotypically plastic. Taken together, our results suggest that RAD sequencing is a powerful approach for studying population structure and phenotypic plasticity in natural populations.
Data from: Early Triassic benthic invertebrates from the Great Bank of Guizhou, South China: systematic palaeontology and palaeobiology
To further our understanding on the evolution, selectivity, and ecological composition of marine communities following the latest Permian mass extinction, new collections from underrepresented regions in the immediate extinction aftermath are required. Here, we provide new systematic data and the first palaeobiological account of the benthic invertebrate community from the Great Bank of Guizhou, South China. We systematically describe 3 brachiopod species, 26 bivalve species, 11 gastropod species, 1 microconchid, and 1 crinoid species. The descriptions include five new species; two bivalve species (Hoernesia? danisae, Atomodesma? hautmanni) and three gastropod species (Donaldina erwini, Cossmannina alfischeri, and Vernelia samae). This is the most species-rich benthic community known so far from the extinction aftermath, which is typically characterised by a high proportion of Permian holdover genera and cosmopolitan taxa. Taxonomically, this community is different from coeval faunas with dissimilarity values > 60%. Ecologically, however, this fauna is similar to faunas from the Dolomites (Italy), and East Greenland. This new data, therefore, suggests that the lower Griesbachian invertebrate faunas were taxonomically heterogeneous, whereas ecologically they were relatively homogenous. The marine community on the Great Bank of Guizhou records genera that survived the mass extinction event with some, but not all, recording a size reduction, i.e., the Lilliput effect. The absence of large body fossils and the preferential survival of small species suggest that the mass extinction event was size-selective.
Data from: Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
One of the key challenges to understanding patterns of β diversity is to disentangle deterministic patterns from stochastic ones. Stochastic processes may mask the influence of deterministic factors on community dynamics, hindering identification of the mechanisms causing variation in community composition. We studied temporal β diversity (among-year dissimilarity) of macroinvertebrate communities in near-pristine boreal streams across 14 years. To assess whether the observed β diversity deviates from that expected by chance, and to identify processes (deterministic vs. stochastic) through which different explanatory factors affect community variability, we used a null model approach. We observed that at the majority of sites temporal β diversity was low indicating high community stability. When stochastic variation was unaccounted for, connectivity was the only variable explaining temporal β diversity, with weakly connected sites exhibiting higher community variability through time. After accounting for stochastic effects, connectivity lost importance, suggesting that it was related to temporal β diversity via random colonization processes. Instead, β diversity was best explained by in-stream vegetation, community variability decreasing with increasing bryophyte cover. These results highlight the potential of stochastic factors to dampen the influence of deterministic processes, affecting our ability to understand and predict changes in biological communities through time.
Supplementary material 1 from: van Deurs M, Moran NP, Schreiber Plet-Hansen K, Dinesen GE, Azour F, Carl H, Møller PR, Behrens JW (2021) Impacts of the invasive round goby (Neogobius melanostomus) on benthic invertebrate fauna: a case study from the Baltic Sea. NeoBiota 68: 19-30. https://doi.org/10.3897/neobiota.68.67340
S1. Sampling Areas (Figure S1); S2. Taxonomic Groupings S1; S3. Model Specifications (Table S2); S4. Sensitivity Analyses (Table S3, Figure S2)
Dataset of Larval dispersal simulations of marine benthic invertebrates around New Zealand
<p>Dataset generated from biophysical simulations modelling larval dispersal around New Zealand with OpenDrift and the Moana Hindcast Backbone from 15 different locations and 4 different maximum PLD lengths. </p> <p>Within each file, the first 2 columns are a particles starting co-ordinates, columns 3 and 4 are ending co-ordinates, column 5 was state at the end of simulations (contact Charles Michie for more information), and column 6 is the origin.</p> <p>Abbreviations for locations: LMR - Leigh Marine Reserve, CTC - Cathedral Cove, RKK - Rongokako, CST - Castlepoint, ISB - Island Bay, KAI - Kaikoura, SPO - Seal Point, HMB - Half Moon Bay, DBS - Doubtful Sound, JSB - Jackson Bay, CFW - Cape Foulwind, OKB - Okiwi Bay, CPE - Cape Egmont, PIH - Piha Beach, CPR - Cape Reinga (also called FRN - Far North elsewhere).</p> <p>Data will accompany the publication "Variation in the dispersal of marine invertebrate larvae around coastal New ZealandVariation in the dispersal of marine invertebrate larvae around coastal New Zealand" </p>
Invertebrate abundance sampled by benthic trawl and grab from common sites
<p><strong>Aim</strong>: Long-term monitoring of offshore benthic communities provides data which are essential for effective marine management. Due to the expense and difficulty of sampling the seafloor comprehensively, monitoring is often limited to one sampling method targeting a specific community. In these cases, biological surrogacy is a useful monitoring approach and can be based on more easily sampled community diversity indices or assemblage patterns across the monitoring sites. This study aimed to quantify marine benthic invertebrate cross-community congruence and test surrogate effectiveness.</p> <p><strong>Location</strong>: Southern Benguela Shelf ecoregion on the west coast of South Africa.</p> <p><strong>Methods</strong>: We compared two benthic biological datasets collected from the same 24 sites: epifauna sampled by demersal research trawl and infauna sampled by grab. This study utilised co-correspondence analysis (CoCA) to test for congruence in assemblage patterns between communities and test community surrogacy.</p> <p><strong>Results</strong>: Significant linear relationships were found between epifauna and infauna species abundance, richness (d), and diversity (H'log<sub>e</sub>). Symmetric co-correspondence analysis (sCoCA) found the common variance captured by the first four axes to explain 40% and 24% of the total epifauna and infauna assemblage variation, respectively. Environmental gradients played a key role in structuring these similarities in broadscale biodiversity patterns. Predictive co-correspondence analysis (pCoCA) showed that epifauna assemblage structure did not significantly predict infauna assemblage structure, but infauna did predict 14% of the variation in epifauna assemblage structure.</p> <p><strong>Main conclusions</strong>: Epifauna and infauna communities were structured similarly but do not predict each other; community congruence does not imply effective surrogacy. These findings should be considered when including different benthic biological datasets into ecosystem classification and mapping, and provides a statistical framework for testing community congruence and surrogate effectiveness.</p>
Data from: Early Triassic benthic invertebrates from the Great Bank of Guizhou, South China: systematic palaeontology and palaeobiology
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Data from: To remain or leave: dispersal variation and its genetic consequences in benthic freshwater invertebrates
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Invertebrate abundance sampled by benthic trawl and grab from common sites
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Data from: Ocean warming affected faunal dynamics of benthic invertebrate assemblages across the Toarcian Oceanic Anoxic Event in the Iberian Basin (Spain)
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Data from: Patterns in vertical distribution and their potential effects on transport of larval benthic invertebrates in a shallow embayment
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Data from: Molecular genetics to inform spatial management in benthic invertebrate fisheries: a case study using the Australian greenlip abalone
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Assisted colonization of a regionally native predator impacts benthic invertebrates in fishless mountain lakes
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Data from: Bay-scale patterns in the distribution, aggregation and spatial variability of larvae of benthic invertebrates
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Data from: RAD sequencing resolves fine-scale population structure in a benthic invertebrate: implications for understanding phenotypic plasticity
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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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.