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896 results for “distributional ranges”
Data from: The importance of biotic interactions in distribution models of wild bees depends on the type of ecological relations, spatial scale and range
<p>Studies have found that biotic information can play an important role in shaping the distribution of species even at large scales. However, results from species distribution models are not always consistent among studies, and the underlying factors that influence the importance of biotic information to distribution models, are unclear. 2. We studied wild bees and plants, and cleptoparasite bees and their hosts in the Netherlands to evaluate how the inclusion of their biotic interactions affects the performance of species distribution models. We assessed model performance through spatial block cross-validation and by comparing models with interactions to models where the interacting species were randomized. Finally, we evaluated how, (i) spatial resolution, (ii) taxonomic rank (genus or species), (iii) degree of specialization, (iv) distribution of the biotic factor, (v) bee body size and (vi) type of biotic interaction, affect the importance of biotic interactions in shaping the distribution of wild bee species using generalized linear models. 3. We found that the models of wild bees improved when the biotic factor was included. The model performance improved the most for parasitic bees. Spatial resolution, taxonomic rank, distribution range of the biotic factor, and degree of specialization of the modelled species all influenced the importance of the biotic interaction to the models. 4. We encourage researchers to include biotic interactions in species distribution models, especially for specialized species and when the biotic factor has a limited distribution range. However, before adding the biotic factor we suggest considering different spatial resolutions and taxonomic ranks of the biotic factor. We recommend using single species or genus data as a biotic factor in the models of specialist species and for the generalist species, we recommend using an approximate measure of interactions, such as flower richness.</p>
Figure 4 in The burmese trout Raiamas guttatus (Day, 1870) (Cypriniformes: Cyprinidae) in South Sumatra revealed its southernmost record of its distributional range
Figure 4. Head pattern of R. guttatus showing large mouth and jaw extending backwards far behind eye (Photo: Muhammad Iqbal).
Figure 1 in The burmese trout Raiamas guttatus (Day, 1870) (Cypriniformes: Cyprinidae) in South Sumatra revealed its southernmost record of its distributional range
Figure 1. Map showing the known distribution of R. guttatus in Sumatra, circle is previous known and triangle is recent distribution record.
Figure 2. Blungun River, location where R in The burmese trout Raiamas guttatus (Day, 1870) (Cypriniformes: Cyprinidae) in South Sumatra revealed its southernmost record of its distributional range
Figure 2. Blungun River, location where R. guttatus found in South Sumatra Province (Photo: Muhammad Iqbal).
Fig. 1 in Global systematic diversity, range distributions, conservation and taxonomic assessments of graylings (Teleostei: Salmonidae; Thymallus spp.)
Fig. 1 Map showing the global distribution range of Thymallus species. Information on sampling sites and species is given in Table S1. Numbers in the map refer to known contact zones of the following species: 1 = T. arcticus s.l. and T. baicalensis in the lower Enisei River; 2 = T. arcticus s.l. and T. baicalolenensis in the lower Lena River; 3 = T. nikolskyi and T. baicalensis in tributaries of the upper Ob River; 4 = T. baicalolenensis and T. baicalensis in tributaries of Lake Baikal; 5 = T. grubii, T. tugarinae
Fig. 2. Oreodytes mongolicus Brinck, 1943 in Endemic and sub-endemic water beetles of Mongolia and their distribution ranges
Fig. 2. Oreodytes mongolicus Brinck, 1943. Photos by Enkhnasan. a. Dorsal habitus, male, b. Head and pronotum, c. Adeagus, laterial view.
Fig. 9 in Endemic and sub-endemic water beetles of Mongolia and their distribution ranges
Fig. 9. Endemic and sub-endemic species richness in the nine subbasins of Mongolia included in this study. SRB-Selenge River Basin; ShRB-Shishkhed River Basin; GRB-Gobi River Basin.
Fig. 4. Ochthebius mongolicus Janssens, 1967 in Endemic and sub-endemic water beetles of Mongolia and their distribution ranges
Fig. 4. Ochthebius mongolicus Janssens, 1967. Photos by Tamás Németh and Aranka Grabant. a. Dorsal habitus, male, b. Head and pronotum, c. Aedeagus, dorsal view, d. Labels for lectotype.
Figure 6. Response curve showing how each environmental variable affected the Maxent prediction. Variables A, B in PhylOgeOgraphy and pOtential distributiOn OF Sturnira lilium and S. giannae (ChirOptera: PhyllOstOmidae) With range eXtensiOn FOr S. giannae in the CerradO and Pantanal biOmes
Figure 6. Response curve showing how each environmental variable affected the Maxent prediction. Variables A, B, and C were the ones that most affected the potential distribution of S. giannae, and D, E, and F most affected the potential distribution of S. lilium. The curves show the average response of the 10 replicate Maxent runs (red) and the standard deviation (blue).
Figure 2 in PhylOgeOgraphy and pOtential distributiOn OF Sturnira lilium and S. giannae (ChirOptera: PhyllOstOmidae) With range eXtensiOn FOr S. giannae in the CerradO and Pantanal biOmes
Figure 2. Detail of the teeth in S. lilium (A and D – MN 82228) and S. giannae (B and E – MN 84766, C and F – MN 82217). The shape of the upper internal incisor unicuspid in S. lilium (A) and unicuspid or bicuspid in S. giannae (respectively B, C). Metaconid of first inferior molar (m1) wide mesodistally and short cervico-occlusal (D, E, and F). Metaconid of second inferior molar (m2) large mesodistally in S. lilium (D) and in S. giannae (F), or short mesodistally and long cervico-occlusally (E) in S. giannae. Scale bars: 1 mm.
Figure 4 in PhylOgeOgraphy and pOtential distributiOn OF Sturnira lilium and S. giannae (ChirOptera: PhyllOstOmidae) With range eXtensiOn FOr S. giannae in the CerradO and Pantanal biOmes
Figure 4. Map showing the distribution and location of analyzed samples of S. giannae in gray circles and blue boundaries, and of S. lilium in black circles and green boundaries. The blue star is the type locality of S. giannae, and the green star is the type locality of S. lilium. The dotted black line marks the extent of S. giannae 's territory in Brazil: Mato Grosso State (1) Barão de Melgaço, and Maranhão State (2) Alto Parnaíba. Other localities are in the Appendix 1.
Text-fig. 1. The Czech Republic with the position of the Příbram-Jince Basin (A), distribution of Cambrian rocks of the Jince Formation in the Příbram-Jince Basin (B), geographic position of discussed localities (C), stratigraphic ranges of Condylopyge in the Jince Formation of the Příbram-Jince Basin (D). 1. foot of the slope known as Vinice near Jince (locality 15 in Fatka and Kordule 1992); lowermost levels of the Acadolenus snajdri Zone sensu Fatka and Szabad (2014). 2. locality Potůček near Rejkovice (= locality 12 in Fatka and Kordule 1992); lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone sensu Fatka and Szabad (2014). Specimens CGS CW 17 and CGS FK 63. 3. foot of the slope known as Vinice near Jince (locality 20 in Fatka and Kordule 1992); lower levels of the Onymagnostus hybridus Biozone sensu Fatka and Szabad (2014). Specimen CGS CW 18. in Condylopyge Hawle Et Corda, 1847 In The Příbram-Jince Basin (Barrandian Area, The Czech Republic, Agnostida)
Text-fig. 1. The Czech Republic with the position of the Příbram-Jince Basin (A), distribution of Cambrian rocks of the Jince Formation in the Příbram-Jince Basin (B), geographic position of discussed localities (C), stratigraphic ranges of Condylopyge in the Jince Formation of the Příbram-Jince Basin (D). 1. foot of the slope known as Vinice near Jince (locality 15 in Fatka and Kordule 1992); lowermost levels of the Acadolenus snajdri Zone sensu Fatka and Szabad (2014). 2. locality Potůček near Rejkovice (= locality 12 in Fatka and Kordule 1992); lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone sensu Fatka and Szabad (2014). Specimens CGS CW 17 and CGS FK 63. 3. foot of the slope known as Vinice near Jince (locality 20 in Fatka and Kordule 1992); lower levels of the Onymagnostus hybridus Biozone sensu Fatka and Szabad (2014). Specimen CGS CW 18.
Figure 4 in Karyological and some morphological characteristics of the Egyptian mongoose, Herpestes ichneumon (Mammalia: Carnivora), along with current distribution range in Turkey
Figure 4. Skull morphology of H. ichneumon from Hatay: A) dorsal, B) ventral, C) lateral view of the skull; D) mandible (lingual), E) mandible (labial) view.
Figure 1 in Karyological and some morphological characteristics of the Egyptian mongoose, Herpestes ichneumon (Mammalia: Carnivora), along with current distribution range in Turkey
Figure 1. Distribution of Herpestes ichneumon in Turkey. ▲: Selçuk (Danford and Alston, 1877); ◇◆: Bahçe (Gülen, 1971); ★: current distribution recorded during this study. 1) Göksu Delta; 2) Tarsus, near the Mersin–Adana highway; 3) 1 km west of Tabaklar village; 4) 7 km northeast of Kefeli village; 5) 2 km west of Gölyaka village; 6) 3 km south of Adana; 7) 3 km southeast of Adana; 8) 1 km southeast of Menekşe village; 9) 3 km south of Deveciuşağı village (sample no. 2429); 10) near Sakarcalı village; 11) near Yeniköy village; 12) 1 km east of Cevdetiye village; 13) 2 km north of Ahrazlar village; 14) 1 km east of Hasanlı village (sample no. 19); 15) 1 km west of Kapısuyu village; and 16) 1 km south of Emirler village (Karaisalı).
Figure 2 in Distribution of rotifers of high mountain lakes in the Eastern Black Sea Range of Turkey
Figure 2. Trophic classes of the lakes based on orthophosphate (u-oligo = ultraoligotrophic; oligo = oligotrophic).
Figure 3 in Distribution of rotifers of high mountain lakes in the Eastern Black Sea Range of Turkey
Figure 3. Trophic classes of the lakes based on Secchi depth (u-oligo = ultraoligotrophic; oligo = oligotrophic; meso = mesotrophic).
Figure 1 in Distribution of rotifers of high mountain lakes in the Eastern Black Sea Range of Turkey
Figure 1. Map of 59 sampling stations associated with 6 drainage basins in the Eastern Black Sea Range in Turkey. Ç = Çoruh River Basin, F = Fırtına Stream Basin, İ = İyidere Stream Basin, K = Kabisra Stream Basin, S = Solaklı Stream Basin, M = Maçka Stream Basin.
Figure 7 in Distribution of rotifers of high mountain lakes in the Eastern Black Sea Range of Turkey
Figure 7. Rotifer species richness for different altitudinal distributions of lakes (n = 58) except Lake Uzungöl (1100 m a.s.l.).
Fig. 1. Pelomedusa galeata from the Ratelfontein farm near Calvinia observed directly after rainfall, 16 February 2019 in Mind the gap-Is the distribution range of Pelomedusa galeata really disjunct in western South Africa?
Fig. 1. Pelomedusa galeata from the Ratelfontein farm near Calvinia observed directly after rainfall, 16 February 2019. For the location of the farm, see Fig. 2 (locality 1). Photos: C.A. van Niekerk.
Fig. 2 in Mind the gap-Is the distribution range of Pelomedusa galeata really disjunct in western South Africa?
Fig. 2. Distribution range of Helmeted Terrapins (shaded in grey), with our records of Pelomedusa galeata in South Africa (white circles). New records of P. galeata in or close to the putative distribution gap: 1 – Nineteen turtles at Ratelfontein farm, near Calvinia (16 February 2019), 2 – Observations of locals at Williston, 3 – Near Carnarvon (shell, collected 25 October 2018), 4 – One terrapin near Beaufort West (4 March 2017), 5 – Two terrapins near Griekwastad (28 October 2018). Inset: Pelomedusa galeata from the Ratelfontein farm. Photo: C.A. van Niekerk.
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Allen Brain Atlas
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