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23 results for “nekton”
Global Climate Change Impacts on the Vegetation and Fauna of Mangrove Forested Ecosystems in Florida (FCE): Nekton Portion from March 2000 to April 2004
Depth is measured at 3 random locations within each net at time of set. All other variables (salinity, temperature, dissolved oxygen) are measured at the river bank adjacent to each net also at the time of set. Minimum and maximum values for sites were found to be: Salinity(ppt) = SRSMc-S2: 0.3-14.7, SRSMc-S3: 15.6-34.4, SRSMc-S4: 2.4-34; Water temp(degrees C)= SRSMc-S2: 22.2-31.5, SRSMc-S3: 16.6-31.1, SRSMc-S4: 21.1-30.6; DO(mg/l)= SRSMc-S2: 2.55-5.27, SRSMc-S3: 2.08-5.3, SRSMc-S4: 1.25-4.2; Mean depth(cm)= SRSMc-S2: 0.0-24.6, SRSMc-S3: 5.7-41.5, SRSMc-S4: 0.0-21.4
Global Climate Change Impacts on the Vegetation and Fauna of Mangrove Forested Ecosystems in Florida (FCE): Nekton Mass from March 2000 to April 2004
Bottomless lift nets are buried within the mangrove forest floor and raised remotely on slack high spring tides to enclose a 6m2 area. As the tide ebbs, fishes retreat into a subtidal refuge cleared when the tide has fallen. Three replicate nets have been sampled at 3 locations along a salinity gradient on Shark River for 4 years. Small resident forage fish and grass shrimp dominate the collections. Exotic species and estuarine transient species that use the estuary as a nursery are rare within the assemblage of fishes that routinely use the flooded forest.
Nekton individual data from flume net collections along Rowley River tidal creeks associated with long term fertilization experiments, Rowley, MA.
The flume nets were deployed with the purpose of capturing salt marsh nekton. Nekton species were identified to the lowest taxonomic level using species keys. The TIDE project aims to simulate eutrophication on a large scale by the addition of NO3- aiming to reach 70μM concentrations from May to September every year during the growing season. This fertilization of the marsh has been going on at Sweeney Creek since the 2004 growing season through 2016 and at Clubhead Creek in 2005 and from 2009 till 2016. Years 2017-2020 are enrichment recovery years.
Nekton species counts and density from flume net collections along Rowley River tidal creeks associated with long term fertilization experiments, Rowley, MA.
The flume nets were deployed with the purpose of capturing salt marsh nekton. Nekton species were identified to the lowest taxonomic level using species keys. The TIDE project aims to simulate eutrophication on a large scale by the addition of NO3- aiming to reach 70μM concentrations from May to September every year during the growing season. This fertilization of the marsh has been going on at Sweeney Creek since the 2004 growing season through 2016 and at Clubhead Creek in 2005 and from 2009 till 2016. Years 2017-2020 are enrichment recovery years.
Monthly small nekton samplings collected in the Plum Island Estuary in 1998
Monthly small nekton samplings collected by seine in the Plum Island Estuary in 1998. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
Monthly small nekton samplings collected in the Plum Island Estuary in 1999
Monthly (June, July, August) small nekton samplings collected by seine in the Plum Island Estuary in 1999 The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
Monthly small nekton samplings collected in the Plum Island Estuary in 2002
Monthly small nekton samplings collected by seine in the Plum Island Estuary in 2002. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
Monthly small nekton samplings collected in the Plum Island Estuary in 1993
Monthly small nekton samplings collected in the Plum Island Estuary in 1993. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
Monthly small nekton samplings collected in the Plum Island Estuary in 1994
Monthly small nekton samplings collected in the Plum Island Estuary in 1994. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
Monthly small nekton samplings collected in the Plum Island Estuary in 1997
Late summer and fall monthly small nekton samplings collected in the Plum Island Estuary in 1997. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
Fig. 3 in Habitat partitioning, habits and convergence among coastal nektonic fish species from the São Sebastião Channel, southeastern Brazil
Fig. 3. Dendrogram of ecomorphological relationships (similarity) for the 17 nektonic fish species studied. Cluster analysis is by the Euclidean distance measure and Group Average linkage method using the same scores (i.e., coordinates) calculated for PCA and plotted in Fig. 2 (cophenetic coefficient r = 0.86). Anc tri = Anchoa tricolor; Ath bra = Atherinella brasiliensis; Car lat = Caranx latus; Chl chr = Chloroscombrus chrysurus; Fis tab = Fistularia tabacaria; Har jag = Harengula jaguana; Hyp uni = Hyporhamphus unifasciatus; Lag lae = Lagocephalus laevigatus; Mug cur = Mugil curema; Oli sau = Oligoplites saurus; Pom sal = Pomatomus saltatrix; Sar jan = Sardinella janeiro; Sco bra = Scomberomorus brasiliensis; Sel vom = Selene vomer; Str tim = Strongylura timucu; Tra car = Trachinotus carolinus; Tri lep = Trichiurus lepturus. There is no scale among the fishes (see Table 2 for standard length range) (illustrations: Alexandre C. Ribeiro).
Fig. 2 in Habitat partitioning, habits and convergence among coastal nektonic fish species from the São Sebastião Channel, southeastern Brazil
Fig. 2. Distribution of the 17 nektonic fish species in ecomorphological space. Ordination is by the first two axes of PCA (cumulative % of variance = 73) (see Table 5). Anc tri = Anchoa tricolor; Ath bra = Atherinella brasiliensis; Car lat = Caranx latus; Chl chr = Chloroscombrus chrysurus; Fis tab = Fistularia tabacaria; Har jag = Harengula jaguana; Hyp uni = Hyporhamphus unifasciatus; Lag lae = Lagocephalus laevigatus; Mug cur = Mugil curema; Oli sau = Oligoplites saurus; Pom sal = Pomatomus saltatrix; Sar jan = Sardinella janeiro; Sco bra = Scomberomorus brasiliensis; Sel vom = Selene vomer; Str tim = Strongylura timucu; Tra car = Trachinotus carolinus; Tri lep = Trichiurus lepturus. There is no scale among the fishes (see Table 2 for standard length range) (illustrations: Alexandre C. Ribeiro).
Fig. 1 in Habitat partitioning, habits and convergence among coastal nektonic fish species from the São Sebastião Channel, southeastern Brazil
Fig. 1. Map indicating the location of the study area (São Sebastião Channel) and the marine station of the University of São Paulo (CEBIMar-USP) on the coast of São Paulo, southeastern Brazil.
Monthly small nekton samplings collected in the Plum Island Estuary, years 2012-2014
Monthly small nekton samplings collected by seine in the Plum Island Estuary during years 2012 - 2014. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
Data from: Spatiotemporal dynamics of Nektonic biodiversity and vegetation shifts during the Smithian–Spathian Transition: Conodont and Palynomorph insights from Svalbard
<p>The dataset includes an Excel file with sporomorph counting of samples from the Stensiöfjellet section, Svalbard. Furthermore, it includes additional taxonomic notes on conodonts from the Stensiöfjellet section, Svalbard.</p>
Data for: Temporal variation in intertidal habitat use by nekton at seasonal and diel scales
<p>A two-year dataset of nekton community structure, seagrass, temperature, and salinity for seagrass-vegetated and unvegetated habitats in Willapa Bay, Washington State, USA. </p>
Arctic nekton uncovered by eDNA metabarcoding: diversity, potential range expansions and benthopelagic coupling
<p><span>The Arctic Ocean is home to a unique fauna that is disproportionately affected by global warming but that remains under-studied</span><span>. Due to their high mobility and responsiveness to global warming, cephalopods and fishes are good indicators of the reshuffling of Arctic communities. Here, we established a nekton biodiversity baseline for the Fram Strait, the only deep connection between the North Atlantic and Arctic Ocean. Using universal primers for fishes (12S) and cephalopods (18S), we amplified environmental DNA (eDNA) from seawater (50–2700 m) and deep-sea sediment samples collected at the LTER HAUSGARTEN observatory. We detected twelve cephalopod and 31 fish taxa in the seawater and seven cephalopod and 28 fish taxa in the sediment,</span><span> including the elusive Greenland shark (</span><span><em>Somniosus</em> <em>microcephalus</em></span><span>)</span><span>. Our data suggest three fish (<em>Mallotus</em> <em>villosus</em>, <em>Thunnus</em> sp. and <em>Micromesistius</em> <em>poutassou</em>) and one squid (<em>Histioteuthis</em> sp.) range expansions. </span><span>The detection of eDNA of pelagic origin in the sediment also suggests that <em>M. villosus</em>, <em>Arctozenus</em> <em>risso</em> and <em>M. poutassou</em> as well as gonatid squids are potential contributors to the carbon flux. </span><span>Continuous nekton monitoring is needed to understand the ecosystem impacts of rapid warming in the Arctic and eDNA proves to be a suitable tool for this endeavor.</span></p>
Arctic nekton uncovered by eDNA metabarcoding: diversity, potential range expansions and benthopelagic coupling
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Data from: Spatiotemporal dynamics of Nektonic biodiversity and vegetation shifts during the Smithian–Spathian Transition: Conodont and Palynomorph insights from Svalbard
Open the record for dataset details and reuse information.
Monthly small nekton samplings collected in the Plum Island Estuary, 2015
Small nekton samplings collected by seine in the Plum Island Estuary during the summer of 2015. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
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International Brain Laboratory public data
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