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90 results for “benthic invertebrate”
Fig. 5 in Diversity and microhabitat use of benthic invertebrates in an urban forest stream (Southeastern Brazil)
Fig. 5. Boxplot of the ecological descriptors calculated for each microhabitat type (litter, sand, and stone) with the one-way repeated measure ANOVA results and the Tukey pairwise post hoc test (letters). Different letters denote significant difference results (p <0.001).
Figs 1-3 in Diversity and microhabitat use of benthic invertebrates in an urban forest stream (Southeastern Brazil)
Figs 1-3. Sampled stretches of the Tijuca River, Tijuca Forest, Rio de Janeiro, Brazil: Figs 1, 2, first stretch located at 380 meters of altitude; and Fig. 3, second stretch located at 420 meters of altitude.
Linked collectors and determiners for: SIO Benthic Invertebrate Collection.
Natural history specimen data linked to collectors and determiners held within, "SIO Benthic Invertebrate Collection". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/a267b6a7-91f9-457c-889a-481e7aa920b6">https://bionomia.net/dataset/a267b6a7-91f9-457c-889a-481e7aa920b6</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/a267b6a7-91f9-457c-889a-481e7aa920b6">https://gbif.org/dataset/a267b6a7-91f9-457c-889a-481e7aa920b6</a>. Formatted as a Frictionless Data package.
Temporal and spatial changes in benthic invertebrate trophic networks along a taxonomic richness gradient
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SONGS Mitigation Monitoring: Experimental Reef Survey - Benthic Algae and Invertebrate Abundance
These data describe annual estimates of the density of benthic macroalgae and macroinvertebrates at an artificial reef (Wheeler North Reef in Orange County, CA) and two natural reference reefs (San Mateo Kelp in Orange County, CA and Barn Kelp in San Diego County, CA). Data were collected from 2000 to 2004 as part of the experimental phase of the San Onofre Nuclear Generating Station (SONGS) kelp reef mitigation program. In the summer of each year, divers identified and counted species of benthic macroalgae and macroinvertebrates in quadrats of varying size that were uniformly distributed along fixed transects at each reef.
SONGS Mitigation Monitoring: Experimental Reef Survey - Benthic Algae, Invertebrate, and Substrate Cover
These data describe annual estimates of the percent cover of benthic macroalgae, sessile macroinvertebrates, and substrate types at an artificial reef (Wheeler North Reef in Orange County, CA) and two natural reference reefs (San Mateo Kelp in Orange County, CA and Barn Kelp in San Diego County, CA). Data were collected from 2000 to 2004 as part of the experimental phase of the San Onofre Nuclear Generating Station (SONGS) kelp reef mitigation program. In the summer of each year, divers identified and recorded species of algae and sessile macroinvertebrates, and substrate types under twenty uniformly placed points within 1 m2 quadrats that were uniformly distributed along fixed transects at each reef.
Benthic invertebrates from intertidal mudflats at the on the coast of Virginia, 2016
We surveyed benthic invertebrates, primarily infauna, during the summer of 2016 on several intertidal mudflats using wet- sieved sediment cores. Infauna cores (25 cm diameter, 10 cm deep) were taken along 100 meter transects (4 sites; 2-4 transects per site; 4 cores per transect). Polychaete individuals were identified to family, while other taxa were identified to phylum or lower. Some groups were counted together, as follows: Gastropods (sea slugs, nudibranchs, snails); small crustaceans (amphipods, isopods and shrimp); large crustaceans (crabs); bivalves (clams). The cnidaria group here is composed of burrowing anemones, Enteropneusta is the acorn worm and Diptera here is burrowing fly larvae. Data Table 1 provides the numbers of different taxa from each core taken along each transect at each site. Additionally, the AFDW (ash free dry weight) of the infauna sampled is included. Data Table 2 provides a summary of the polychaete biodiversity data presented in Spreadsheet 1, with the total counts for each polychaete family found at the four different sites. Samples were collected during May of 2016. Polychaetes were identified using Polychaete Key for Chesapeake Bay and Coastal Virginia (Bartholomew 2001).
Temporal and spatial changes in benthic invertebrate trophic networks along a salinity gradient
<p>Species interactions underlie all ecosystem goods and services and are important for understanding ecosystem changes. Representing one type of species interaction, trophic networks are able to be constructed from biodiversity monitoring data and known trophic links to understand how ecosystems have changed over time. The Baltic Sea is subject to high anthropogenic pressures, and its low species diversity makes it an ideal candidate for understanding how pressures change food webs. In this study, we used benthic monitoring data from 20 years (1980-1989 and 2010-2019) from the Swedish coast of the Baltic Sea and Skagerrak to investigate changes in benthic invertebrate trophic interactions. We constructed food webs and calculated traditional food web metrics that we compared over space and time. Our results show that the west coast of Sweden (Skagerrak) showed a reduction in benthic invertebrate biodiversity by 40% between the 1980's and 2010's, and that the number of links, linkage diversity, generality of predators, and vulnerability of prey have been significantly reduced. However, connectance has not significantly changed in the Skagerrak. The other basins (Bothnian Sea, Baltic Proper and Bornholm Basin) do not show any consistent significant trends in any food web metrics investigated, demonstrating resilience at a lower species diversity. The decreased complexity of the Skagerrak food webs indicates vulnerability to further perturbations and pressures should be limited as much as possible to ensure continued ecosystem functions.</p>
Secondary production increases with species richness but decreases with species evenness of benthic invertebrates
<p>Biodiversity is known to regulate ecosystem functioning under controlled experimental conditions. However, the 'real-world' consequences of biodiversity change remain uncertain, as biodiversity–ecosystem function (BEF) relationships observed in nature may be influenced by other drivers. Attempts to disentangle BEF relationships from the effects of confounding factors have so far focused mainly on primary producers, leaving relatively little known about the impact of changes in consumer diversity despite ecosystems experiencing species extirpations and introductions across trophic levels. Using data from 176 benthic invertebrate assemblages distributed throughout the North Sea, we studied how a fundamental ecological function – secondary production – varies in relation to two components of biodiversity – consumer species richness and evenness – while statistically controlling the effects of abiotic and biotic covariates. Production was enhanced as richness increased or evenness decreased. The relationship with evenness was attributable to its negative covariance with the abundance of small organisms; however, the relationship with richness could not be fully explained by other drivers. Our study reaffirms experimental findings about the functional importance of species richness and suggests that losing or gaining consumer species will affect secondary production over a broad range of biodiversity (20 to 118 species) in natural ecosystems.</p>
Fish carcass deposition to suppress invasive lake trout through hypoxia causes limited, non-target effects on benthic invertebrates in Yellowstone Lake
<p class="MsoNormal">Invasive species can have negative effects on native biodiversity and ecosystem function, and suppression is often required to minimize the effects. However, management actions to suppress invasive species may cause negative, unintended effects on non-target taxa. Across the USA, lake trout (<em>Salvelinus namaycush</em>) are invasive in many freshwater ecosystems, reducing native fish abundance and diversity through predation and competition. In an integrated pest management approach, lake trout embryos in Yellowstone Lake, Wyoming are suppressed by depositing lake trout carcasses onto spawning sites; the carcasses reduce dissolved oxygen concentrations as they decay, causing embryo mortality. We conducted a field experiment during one ice-free season at four sites in Yellowstone Lake to investigate the non-target effects of carcass treatment on benthic invertebrates, which could have consequences for native fish diets. While overall invertebrate density and biomass did not respond to carcass treatment, Chironomidae midges and Sphaeriidae fingernail clams decreased in abundance. Carcass treatment altered invertebrate community structure based on density, but not biomass. Carcass treatment to suppress invasive fish embryos has spatially localized, non-target effects on some benthic invertebrate taxa. Given the small spatial extent of carcass treatment within the lake, we conclude it is unlikely that carcass treatment will alter food availability for native fishes.</p>
Data for: Variation in fatty acid content among benthic invertebrates in a seasonally driven system
<p><span>At temperate latitudes where seasonal changing environmental conditions strongly affect the magnitude, duration and species composition of pelagic primary production, macrobenthic organisms living below the photic zone rely on the sedimentation of this organic matter as their primary energy source. The succession from nutritious spring blooms to summer cyanobacteria is assumed to reduce food quality for benthic primary consumers and their fatty acid profiles. In contrast, we find low seasonal variability in fatty acid content of five benthic macroinvertebrates spanning two trophic levels in the Baltic Sea, a system with high seasonal variation in phytoplankton species composition. However, levels of the major FA groups vary greatly between benthic species. The results suggest that benthic macroinvertebrates have evolved FA metabolism adapted to degraded sedimenting material. Moreover, our study shows that species composition of benthic macrofauna rather than seasonal changing conditions affect availability of essential nutrients to higher trophic levels.</span></p>
Fig. 1 in First Description Of Invertebrate Benthic Fauna In Middle Zone Of The Loa River (Chile)
Fig. 1. Map of studied sites.
Fatty acid composition and content of seston, zooplankton, benthic invertebrates and fish in Lake Pyhäjärvi and Lake Köyliönjärvi
<p><span>We evaluated how cyanobacteria bloom, driven by agricultural eutrophication (defined as an increase in nutrients) or global warming, influence fatty acid profiles of phytoplankton, zooplankton (<em>Daphnia</em> + <em>Bosmina</em>), and fish (roach and perch) in eutrophic Lake Köyliöjärvi and mesotrophic Lake Pyhäjärvi. Regarding the nutritional value of food web components, we evaluated changes in the ω-3 and ω-6 polyunsaturated fatty acids (PUFA) of phytoplankton and consumers at different trophic levels. We report the fatty acid results as percentages (%) and content (µg FA mg<sup>-1</sup> C<sup>-1</sup>).</span></p>
Fatty acid composition and content of seston, zooplankton, benthic invertebrates and fish in Lake Pyhäjärvi and Lake Köyliönjärvi
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Density data for Lake Erie benthic invertebrate assemblages from 1930 to 2019
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Data from: Community size and disturbance history jointly explain the interplay between stochastic and deterministic community variation in benthic invertebrates
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Fish carcass deposition to suppress invasive lake trout through hypoxia causes limited, non-target effects on benthic invertebrates in Yellowstone Lake
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Data from: Linking water to the bottom: eDNA study of benthic invertebrates and invasive species in the Venice lagoon
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Data for: Variation in fatty acid content among benthic invertebrates in a seasonally driven system
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Benthic invertebrates in the Wadden Sea form a stable community characterized by facilitating relationships
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Allen Brain Atlas
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