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15 results for “Crustacean zooplankton”
Crustacean Zooplankton Species Richness in 66 North American Lakes
Data from 66 North American lakes were collected to construct a model for predicting the number of crustacean zooplankton species expected in a lake. The chosen lakes have a range from 4 sq m to 80 x 10**9 sq m surface area, range from ultra-oligotrophic to hypereutrophic, and have zooplankton species lists based of several years of observation The number of crustacean zooplankton species in a lake is significantly correlated with lake size, average rate of photosynthesis (parabolic function) and the number of lakes within 20 km. A multiple linear regression model, using these three independent variables, explains approximately 75% of the variation in log species richness. Prediction of species richness is not enhanced by the knowledge of lake depth, salinity, elevation, latitude, longitude, or distance to nearest lake. The North American species area curve is statistically different from and steeper than the corresponding European curve. Number of sites: 69
Sub-fossil crustacean zooplankton relative abundances from 101 lakes across Canada
<p>This data set contains cladoceran sub-fossil relative abundances for 101 lakes across Canada sampled as part of the NSERC Canadian Lake Pulse Network project. Lakes were sampled once, over three summers (2017-2018-2019). Cores were collected using a gravity corer in the deepest point of each lake and were sectioned on site with a vertical extruder. Each lake was sampled for a “top” sediment sample, represented by the first centimeter of the surface of the sediment core, and a “bottom” sediment sample, corresponding to the 1 cm of sediment located between 3 and 4 cm from the base of the core. Cladoceran extraction and preparation followed the protocol from Korhola and Rautio (2001). Cladocerans were identified using DM 2500 Leica compound inverted microscope under 200X-400X magnification with a minimal count size of 100 individuals. Identification at the species, genus, or species complex level followed Szeroczynska and Sarmaja-Korjonen (2007) and Korosi and Smol (2012a; b).</p> <p>Sites are identified with Lake ID number, followed by “T” for top samples and “B” for bottom samples. Lakes IDs with respective locations (longitude and latitude coordinates) and Continental Basin allocations can be found here: <a href="https://doi.org/10.5281/zenodo.4701262">https://doi.org/10.5281/zenodo.4701262</a></p> <p>References</p> <p>Korhola, A., and M. Rautio. 2001. Cladocera and other branchiopod crustaceans, p. 225–234. <em>In</em> J.P. Smol, H.J.B. Birks, and W.M. Last [eds.], Tracking Environmental Change Using Lake Sediments. Springer.</p> <p>Korosi, J. B., and J. P. Smol. 2012a. An illustrated guide to the identification of cladoceran subfossils from lake sediments in northeastern North America: Part 1-the Daphniidae, Leptodoridae, Bosminidae, Polyphemidae, Holopedidae, Sididae, and Macrothricidae. J. Paleolimnol. <strong>48</strong>: 571–586. doi:10.1007/S10933-012-9632-3</p> <p>Korosi, J. B., and J. P. Smol. 2012b. An illustrated guide to the identification of cladoceran subfossils from lake sediments in northeastern North America: Part 2-the Chydoridae. J. Paleolimnol. <strong>48</strong>: 587–622.</p> <p>Szeroczyfiska, K., and K. Sarmaja-Korjonen. 2007. Atlas of Subfossil Cladocera from Central and Northern Europe, Friends of the Lower Vistula Society, Warsaw, Pol.</p>
Figure 2 in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 2. UPGMA illustrates the clustering relationships of 12 zooplankton species. Abbreviations: EU: Eucyclops serrulatus; PC: Paracyclops chiltoni; AR: Acanthocyclops robustus; PF: Paracyclops fimbiratus; AV: Acanthocyclops vernalis; MH: Macrothrix hirsuticornis; CS: Chydorus sphaericus; PA: Pleuroxus aduncus; OT: Oxyurella tenuicaudis; LL: Leydigia leydigi; CAN: Canthocamptus staphylinus; ATT: Attheyalla crassa.
Figure 4 in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 4. Number of species (species no.) and numbers of troughs (trough no.) at 100-m altitudinal ranges.
Figure 3 in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 3. Distribution of the numbers of species among 142 troughs from no species (0) in 43 troughs to 5 (5+) or more species in 3 troughs.
Fig. 2 in The Impacts of Crustacean Zooplankton on a Natural Ciliate Community: a Short-term Incubation Experiment
Fig. 2. The abundance and biomass of ciliate taxa in the four treatments. The samples were collected on days 1, 5, 10, and 15.
Fig. 5 in The Impacts of Crustacean Zooplankton on a Natural Ciliate Community: a Short-term Incubation Experiment
Fig. 5. Dynamics of some dominant ciliate species during the experiment. The samples were collected on days 1, 5, 10, and 15. *Padj <0.008333, **Padj <0.001667
Fig. 6 in The Impacts of Crustacean Zooplankton on a Natural Ciliate Community: a Short-term Incubation Experiment
Fig. 6. Microphotographs of some common ciliates stained with the QPS approach during the experiment. (a) Askenasia acrostomia, (b) Askenasia chlorelligera, (c) Balanion planctonicum, (d) and (e) Codonella cratera, (f) Pseudostrombidium planctonticum, (g) and (i) Rimostrombidium lacustris, (h) Tintinnidium pusillum, (j) Rimostrombidium hyalinum, (k) Rimostrombidium brachykinetum, (l) Urotricha farcta, (m) Halteria sp., (n) Cyclidium sp., (o) Pelagostrombidium mirabile, (p) Limnostrombidium viride. All photographs were taken with an Olympic DP73 digital camera mounted on an Olympic BX51 light microscope. Scale bar equals 10 μm.
Fig. 3 in The Impacts of Crustacean Zooplankton on a Natural Ciliate Community: a Short-term Incubation Experiment
Fig. 3. Ciliate abundance and biomass by classification of body size. Small, medium, and large ciliates refer to a ciliate biovolume of <3000, 3000–5000, and> 5000 μm3, respectively.
Fig. 1 in The Impacts of Crustacean Zooplankton on a Natural Ciliate Community: a Short-term Incubation Experiment
Fig. 1. The initial (d1) and final (d15) biomass of algae (a) and final abundance of rotifers (b) in the four treatments.
Figure 1. The map illustrates 142 in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 1. The map illustrates 142 trough sites sampled in Ankara.
Figure 5. a in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 5. a) trough with 4 segments made of cement (photo taken 23 June 2011).
Figure 5. c in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 5. c) trough made of cement (photo taken 24 June 2011).
Figure 5. d in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 5. d) trough used by goats (photo taken 25 June 2011).
Figure 5. b in Taxonomy, distribution, and ecology of crustacean zooplankton in trough waters of Ankara (Turkey)
Figure 5. b) trough made of carping oak tree (photo taken 27 June 2011).
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