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28 results for “Endorheic”
Lake area and volume variation data in the endorheic basin of the Tibetan Plateau from 1989 to 2019
<p>The Tibetan Plateau, known as the third pole of the Earth, is a region susceptible to climate change. With little human disturbance, lake storage changes serve as a unique indicator of climate change, but comprehensive lake area and volume data are rare in the region, especially for the lakes with an area less than 10 km<sup>2</sup> which are the most sensitive to environmental changes. In this dataset, we completed a census of annual lake area and volume change for 976 lakes larger than 1 km<sup>2</sup> in the endorheic basin of the Tibetan Plateau (EBTP) during 1989-2019 using Landsat imagery and digital terrain models. This dataset contains the lake extents shapefile containing the annual area and relative volume data from 1989 to 2019 for each lake. Besides, the lake seeds we used to calculate the relative lake volume are also published. <br> </p>
Glaciers elevation change over Tibetan Plateau's endorheic basin during 1975-2000
<p>Glacier elevation changes over the endorheic basin of the Tibetan plateau with KH-9 in 1975-2000.</p>
Glaicer elvation change in Tibetan Plateau's endorheic basin during 1975-2000
<p>Glacier elevation change results over Tibetan Plateau's endorheic basin during 1975-2000.</p>
NWEI: A global Nested Watershed dataset considering Endorheic basins and Islands
<h3><strong>contact</strong></h3> <p>Junzhi Liu (liujunzhi@lzu.edu.cn), Bin Zhang (zhangbin2023@lzu.edu.cn)</p> <h3><strong>description</strong></h3> <p>A global nested watershed dataset named NWEI (Nested Watershed dataset considering Endorheic basins and Islands) was developed based on the 3-arc-second-resolution hydrography dataset MERIT Hydro v1.0.1 automatically (<em>Yamazaki et al.</em>, 2019). Compared with the state-of-the-art HydroBASINS dataset, NWEI has more detailed and accurate watershed boundaries. </p> <h3><strong>Data organization</strong></h3> <p>Global data is stored by region.</p> <h3><strong>Filename</strong></h3> <p> "Basin_XXX.gdb.zip", XXX represents the region.</p>
Geomorphology variables predict fish assemblages for forested and endorheic rivers
<p>This dataset contains data from field collections described in the paper: "Shields, R., Pyron, M., Arsenault, E., Thorp, J., Minder, M., Artz, C., Costello, J., Otgonganbat, A., Mendsaikhan, B., Maasri., A. (2022) Geomorphology variables predict fish assemblages for forested and endorheic rivers. Ecology and Evolution. ECE-2021-08-01367". </p> <p>Stream fishes are restricted to specific environments with appropriate habitats for feeding and reproduction. Interactions between streams and surrounding landscapes influence the availability and type of fish habitat, nutrient concentrations, suspended solids, and substrate composition. Valley width and gradient are geomorphological variables that influence the frequency and intensity that a stream interacts with the surrounding landscape. For example, in constrained valleys, canyon walls are steeply-sloped and valleys are narrow, limiting the movement of water into riparian zones. Wide valleys have long, flat floodplains that are inundated with high discharge. We tested for differences in fish assemblages with geomorphology variation among streams in US and Mongolia montane forested and endorheic ecoregions. Montane rivers of Mongolia are pristine and have few invasive species, compared to montane rivers of the western US. Sites where we collected were defined as geomorphologically unique river segments (i.e., functional process zones; FPZs) using an automated ArcGIS-based tool. This tool extracts geomorphic variables at the valley and catchment scales and uses them to cluster stream segments based on their similarity. We collected a representative fish sample from replicates of FPZs. Then, we used constrained ordinations to determine if river geomorphology could predict fish assemblage variation. Our constrained ordination approach using geomorphology to predict fish assemblages resulted in significance using fish taxonomy and traits in several watersheds. The watersheds where constrained ordinations were not successful were next analyzed with unconstrained ordinations to examine patterns among fish taxonomy and traits with geomorphology variables. US and Mongolia montane river fish assemblages varied with geomorphology variables including river elevation, gradient, valley width, channel sinuosity, valley slope, and annual precipitation. These results provide evidence that fish assemblages respond similarly and strongly to geomorphic variables on two continents. We recommend increased conservation of river ecosystems of the US and Mongolia, to prevent further degradation.</p>
Geomorphology variables predict fish assemblages for forested and endorheic rivers
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[Model outputs] Identifying major hydrologic change drivers in a highly managed transboundary endorheic basin: integrating hydro‐ecological models and time‐series data mining techniques
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FIGURE 2 in A new species of Astyanax (Characiformes: Characidae) from the endorheic R o Sal basin, Tucumán, northwestern Argentina
FIGURE 2. Astyanax puka, CI-FML 3850, 44.2 mm SL: right premaxilla, maxilla and lower jaw in medial view. Scale bar=1 mm.
FIGURE 3 in A new species of Astyanax (Characiformes: Characidae) from the endorheic R o Sal basin, Tucumán, northwestern Argentina
FIGURE 3. Detail of morphology of first ceratobranchial gill-rakers; left: Astyanax mexicanus, ANSP 162587, 48.5 mm SL; right: Astyanax puka, CI-FML 3850, 44.2 mm SL. Scale bar=0.2 mm.
FIGURE 1 in A new species of Astyanax (Characiformes: Characidae) from the endorheic R o Sal basin, Tucumán, northwestern Argentina
FIGURE 1. Astyanax puka; above: CI-FML 3844, male, holotype, 50.3 mm SL; below: CI-FML 3849, female paratype, 59.0 mm SL. Scale bar=10 mm.
FIGURE 9 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 9. Dendrogram based on the between-groups-linkage method showing the phenotypic relations among the studied populations of Aphanius sophiae (Kor River Basin), A. farsicus (Maharlu Lake Basin) and A. pluristriatus (Mond River Basin). The dendrogram is based on all characters of the scale surface morphology and microstructures (see Tables 2 and 3). I: Kor River subsystem and II: Tashk and Bakhtegan Lakes subsystem. See Table 1 for codes of sampling sites.
FIGURE 5 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 5. Scale surface microstructures of the studied species: First circuli on the rostral field. A–I: Aphanius sophiae from the Kor River subsystem (A—Safashahr, B—Ghadamgah, C—Beyza, D—Bandeamir, E—Kharameh) and from the Tashk and Bakhtegan Lakes subsystem (F—Gomban, G—Tashk, H—Bakhtegan, I—Gol); J–M: A. farsicus from the Maharlu Lake Basin (J—Dobaneh, K—Pirbanoo, L—Babunak, M—Barmeshoor); N: A. pluristriatus from Zarjan in the Mond River Basin. Arrows indicate continuous circuli. Scale bar: 20 µm.
FIGURE 6 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 6. Scale surface microstructures of the studied species: Tubercles on the caudal scale field. A–I: Aphanius sophiae from the Kor River subsystem (A—Safashahr, B—Ghadamgah, C—Beyza, D—Bandeamir, E—Kharameh) and from the Tashk and Bakhtegan Lakes subsystem (F—Gomban, G—Tashk, H—Bakhtegan, I—Gol); J–M: A. farsicus from the Maharlu Lake Basin (J—Dobaneh, K—Pirbanoo, L—Babunak, M—Barmeshoor); N: A. pluristriatus from Zarjan in the Mond River Basin. Arrows in E and L show mucus pores. Scale bar: 20 µm.
FIGURE 2. A in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 2. A) Schematic drawing of an Aphanius scale, including some of the terms used in this study. Terminology follows Lippitsch (1990), Kuusipalo (1998), Jawad (2005) and Jawad and Al-Jufaili (2007). Dashed lines delimit the different fields. Scale bar: 200 µm. B) Measurements of scale length and width (after Esmaeili 2001). C) Schematic shapes of scale and focus as described in this study and in Table 3; terminology follows Kuusipalo (1998): a—Pentagonal, b—Elliptic-pentagonal, c—Round-pentagonal, d—Round-triangular, e—Elliptic-rectangular, f—Oblong, g—Oval, h—Round, i—Quadrangular, j—Rectangular, k—Trapezoidal, l—Elliptical.
FIGURE 1 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 1. Geographic overview and position of the study sites; numbers 1–5 refer to Aphanius sophiae from the Kor River subsystem (1—Safashahr, 2—Ghadamgah, 3—Beyza, 4—Bandeamir, 5—Kharameh), 6–9 refer to A. sophiae from the Tashk and Bakhtegan Lakes subsystem (6—Gomban, 7—Tashk, 8—Bakhtegan, 9—Gol), 10–13 refer to A. farsicus from the Maharlu Lake Basin (10—Dobaneh, 11—Pirbanoo, 12—Babunak, 13—Barmeshoor), and 14 is A. pluristriatus from Zarjan in the Mond River Basin.
FIGURE 8 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 8. Scale surface microstructures of the studied species: Lepidonts on the lateral scale fields. A–I: Aphanius sophiae from the Kor River subsystem (A—Safashahr, B—Ghadamgah, C—Beyza, D—Bandeamir, E—Kharameh) and from the Tashk and Bakhtegan Lakes subsystem (F—Gomban, G—Tashk, H—Bakhtegan, I—Gol); J–M: A. farsicus from the Maharlu Lake Basin (J—Dobaneh, K—Pirbanoo, L—Babunak, M—Barmeshoor); N: A. pluristriatus from Zarjan in the Mond River Basin. Scale bar: 2 µm.
FIGURE 4 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 4. Scale surface microstructures of the studied species: Focus shapes and types of granules. A–I: Aphanius sophiae from the Kor River subsystem (A—Safashahr, B—Ghadamgah, C—Beyza, D—Bandeamir, E—Kharameh) and from the Tashk and Bakhtegan Lakes subsystem (F—Gomban, G—Tashk, H—Bakhtegan, I—Gol); J–M: A. farsicus from the Maharlu Lake Basin (J—Dobaneh, K—Pirbanoo, L—Babunak, M—Barmeshoor); N: A. pluristriatus from Zarjan in the Mond River Basin. Scale bar: 20 µm.
FIGURE 7 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 7. Scale surface microstructures of the studied species: Lepidonts on the rostral scale field. A–I: Aphanius sophiae from the Kor River subsystem (A—Safashahr, B—Ghadamgah, C—Beyza, D—Bandeamir, E—Kharameh) and from the Tashk and Bakhtegan Lakes subsystem (F—Gomban, G—Tashk, H—Bakhtegan, I—Gol); J–M: A. farsicus from the Maharlu Lake Basin (J—Dobaneh, K—Pirbanoo, L—Babunak, M—Barmeshoor); N: A. pluristriatus from Zarjan in the Mond River Basin. Scale bar: 2 µm.
FIGURE 3 in Scale surface microstructure and scale size in the tooth-carp genus Aphanius (Teleostei, Cyprinodontidae) from endorheic basins in Southwest Iran
FIGURE 3. Scale surface morphology of the studied species. A–I: Aphanius sophiae from the Kor River subsystem (A—Safashahr, B—Ghadamgah, C—Beyza, D—Bandeamir, E—Kharameh) and from the Tashk and Bakhtegan Lakes subsystem (F—Gomban, G—Tashk, H—Bakhtegan, I—Gol). J–M: A. farsicus from the Maharlu Lake Basin (J—Dobaneh, K—Pirbanoo, L—Babunak, M—Barmeshoor). N: A. pluristriatus from Zarjan in the Mond River Basin. Arrows indicate secondary radii (A), primary radii (K), and tertiary radii (E, J, N). Dashed lines in J show the area of rostral, lateral and caudal fields. Scale bar: 200 µm.
Figure 5 from: Teimori A, Gholami Z, Reichenbacher B (2012) Aphanius arakensis, a new species of tooth-carp (Actinopterygii, Cyprinodontidae) from the endorheic Namak Lake basin in Iran. ZooKeys 215: 55-76. https://doi.org/10.3897/zookeys.215.1731
Figure 5 - Male (above) and female specimens (not preserved) of Aphanius arakensis sp. n., collected from Cheshmeh Nazi (Nazi spring, 33°42'56.8"N, 50°04'21.9"E) near type locality, Namak Lake Basin.
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