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407 results for “riparian”
Supplementary material 1 from: Anđelković AA, Pavlović DM, Marisavljević DP, Živković MM, Novković MZ, Popović SS, Cvijanović DL, Radulović SB (2022) Plant invasions in riparian areas of the Middle Danube Basin in Serbia. NeoBiota 71: 23-48. https://doi.org/10.3897/neobiota.71.69716
List of the studied rivers/canal sections and their catchment area affiliation (and code in the analysis)
Tradeoffs between leaf cooling and hydraulic safety in a dominant arid land riparian tree species
<p>Leaf carbon gain optimization in hot environments requires balancing leaf thermoregulation with avoiding excessive water loss via transpiration and hydraulic failure. The tradeoffs between leaf thermoregulation and transpirational water loss can determine the ecological consequences of heat waves that are increasing in frequency and intensity. We evaluated leaf thermoregulation strategies in warm (>40 °C maximum summer temperature) and cool-adapted (<40 °C maximum summer temperature) genotypes of the foundation tree species, <em>Populus fremontii</em> using a common garden near the mid-elevational point of its distribution. We measured leaf temperatures and assessed three modes of leaf thermoregulation: leaf morphology, midday canopy stomatal conductance, and stomatal sensitivity to vapor pressure deficit. Data were used to parameterize a leaf energy balance model to estimate contrasts in midday leaf temperature in warm- and cool-adapted genotypes. Warm-adapted genotypes had 39% smaller leaves and 38% higher midday stomatal conductance, reflecting a 3.8 °C cooler mean leaf temperature than cool adapted genotypes. Leaf temperatures modeled over the warmest months were on average 1.1 °C cooler in warm- relative to cool-adapted genotypes. Results show that plants adapted to warm environments are predisposed to tightly regulate leaf temperatures during heat waves, potentially at an increased risk of hydraulic failure. </p>
Environment driven changes in diversity of riparian plant communities along a mountain river
<p>The study of changes in species richness and composition along rivers has focused on large spatial scales. It has been ignored that in different sections of the river (high mountain area, middle zone and river mouth) the specific environmental conditions can generate different longitudinal patterns of the species richness and composition. In this study we determine if species richness and composition of the riparian plant communities change along a mountain river and if these changes are related with environmental variables. We expect an increase in species richness and turnover along the river, that the upstream communities would be a subset of the downstream communities and that such would be related to edaphic and hydrologic conditions. To test this, we sampled three strata of the riparian vegetation (upper: individuals with <1 cm of ND, middle: individuals with >1 cm of ND, low: individuals with >1 m tall) in a set 15 sites that we place along a mountain river. Additionally, we recorded topographic, hydrological, morphological, and soil variables. We performed correlation analyzes to determine if changes in species richness and turnover were related to increased distance to the origin of the river. Also, we obtained the nestedness and evaluated the importance of environmental variables with GLM, LASSO regression and CCA. With the increase in distance the species richness decreases in the upper stratum, but not in the middle and the low stratum (although the highest values were observed near the origin of the river), the turnover increase in all strata and the upstream communities were not a subset of the downstream communities. The changes in species richness and composition were related to topographic (altitude), hydrological (flow) and edaphic (conductivity and pH) variables. Our results indicate that at small spatial scales the patterns of richness and composition differ from what has been found at larger spatial scales and that these patterns are associated with environmental changes in the strong altitude gradients of mountain rivers.</p>
On following pages: 368. Himalayan Broad-muzzled Bat (Submyotodon caliginosus); 369. Moupin Broad-muzzled Bat (Submyotodon moupinensis); 370. Northern Myotis (Myotis septentrionalis); 371. South-western Myotis (Myotis auriculus); 372. Western Small-footed Myotis (Myotis ciliolabrum); 373. Dark-nosed Small-footed Myotis (Myotis melanorhinus); 374. Eastern Small-footed Myotis (Myotis leibil); 375. California Myotis (Myotis californicus); 376. Little Brown Myotis (Myotis lucifugus); 377. Keen's Myotis (Myotis keenii); 378. Long-eared Myotis (Myotis evotis); 379. Fringed Myotis (Myotis thysanodes); 380. Arizona Myotis (Myotis occultus); 381. Longlegged Myotis (Myotis volans); 382. Flat-headed Myotis (Myotis planiceps); 383. Indiana Myotis (Myotis sodalis); 384. Cinnamon Myotis (Myotis fortidens); 385. Findley's Myotis (Myotis findley)); 386. Northern Hairy-legged Myotis (Myotis pilosatibialis); 387. Southern Hairy-legged Myotis (Myotis keaysi); 388. Red Myotis (Myotis ruber); 389. Riparian Myotis (Myotis riparius); 390. Velvety Myotis (Myotis simus); 391. Golden Myotis (Myotis midastactus); 392. Elegant Myotis (Myotis elegans); 393. Fish-eating Myotis (Myotis vives). in Vespertilionidae
On following pages: 368. Himalayan Broad-muzzled Bat (Submyotodon caliginosus); 369. Moupin Broad-muzzled Bat (Submyotodon moupinensis); 370. Northern Myotis (Myotis septentrionalis); 371. South-western Myotis (Myotis auriculus); 372. Western Small-footed Myotis (Myotis ciliolabrum); 373. Dark-nosed Small-footed Myotis (Myotis melanorhinus); 374. Eastern Small-footed Myotis (Myotis leibil); 375. California Myotis (Myotis californicus); 376. Little Brown Myotis (Myotis lucifugus); 377. Keen's Myotis (Myotis keenii); 378. Long-eared Myotis (Myotis evotis); 379. Fringed Myotis (Myotis thysanodes); 380. Arizona Myotis (Myotis occultus); 381. Longlegged Myotis (Myotis volans); 382. Flat-headed Myotis (Myotis planiceps); 383. Indiana Myotis (Myotis sodalis); 384. Cinnamon Myotis (Myotis fortidens); 385. Findley's Myotis (Myotis findley)); 386. Northern Hairy-legged Myotis (Myotis pilosatibialis); 387. Southern Hairy-legged Myotis (Myotis keaysi); 388. Red Myotis (Myotis ruber); 389. Riparian Myotis (Myotis riparius); 390. Velvety Myotis (Myotis simus); 391. Golden Myotis (Myotis midastactus); 392. Elegant Myotis (Myotis elegans); 393. Fish-eating Myotis (Myotis vives).
Data for: Dark matters – contrasting responses of stream biofilm to browning and loss of riparian shading
<p><span>Concentrations of terrestrial-derived dissolved organic carbon (DOC) in freshwater ecosystems have increased consistently, causing freshwater browning. The mechanisms behind browning are complex, but in forestry-intensive regions browning is accelerated by land drainage. Forestry actions in streamside riparian forests alter canopy shading, which together with browning is expected to exert a complex and largely unpredictable control over key ecosystem functions. We conducted a stream mesocosm experiment with three levels of browning (ambient vs. moderate vs. high, with 2.7 and 5.5-fold increase, respectively, in absorbance) crossed with two levels of riparian shading (70% light reduction vs. open canopy) to explore the individual and combined effects of browning and loss of shading on the quantity (algal biomass) and nutritional quality (polyunsaturated fatty acid and sterol content) of the periphytic biofilm. We also conducted a field survey of differently colored (4.7 to 26.2 mg DOC L<sup>-1</sup>) streams to provide a 'reality check' for our experimental findings. Browning reduced greatly the algal biomass, suppressed the availability of essential polyunsaturated fatty acids, especially eicosapentaenoic acid (EPA), and sterols, but increased the availability of terrestrial-derived long-chain saturated fatty acids (LSAFA). In contrast, loss of shading increased primary productivity, which resulted in elevated sterol and EPA content of the biofilm. The field survey largely repeated the same pattern: biofilm nutritional quality decreased significantly with increasing DOC, as indicated particularly by a decrease of the </span><span><em><span><span>w</span></span></em>-3:</span><span><em><span><span>w</span></span></em>-6 ratio and increase in LSAFA content. Algal biomass, in contrast, was mainly controlled by dissolved inorganic nitrogen (DIN) concentration, while DOC concentration was of minor importance. The ongoing browning process is inducing a dramatic reduction in the nutritional quality of the stream biofilm. Such degradation of the major high-quality food source available for stream consumers may reduce the trophic transfer efficiency in stream ecosystems, potentially extending across the stream-forest ecotone. </span></p>
Behavior of riparian Iguana iguana: Cano Palma boat traffic study
<p>Although frequently studied in captivity, less is known about wild <em>Iguana iguana</em>. Herein behavior of riparian <em>I. iguana </em>was collected alongside climate, vigilance, and boat traffic data. Observations showed boat tourism potentially affects <em>I. iguana</em> negatively. We recommend minor changes by the ecotourism industry to alleviate visitor pressure on <em>I. iguana</em>.</p>
Distribution. SE Kenya, endemic to riparian forest patches along the lower Tana River; an additional small population was recently discovered in the Tana River Delta. in Cercopithecidae
Distribution. SE Kenya, endemic to riparian forest patches along the lower Tana River; an additional small population was recently discovered in the Tana River Delta.
FIGURE 4 in A distinct new species of riparian rock-dwelling gecko (genus: Hemidactylus) from the southern Western Ghats
FIGURE 4. MP/ML tree of Indian Hemidactylus geckos constructed using cytb and ND2 mitochondrial and RAG1 and PDC nuclear sequences including H. paaragowli sp. nov.
FIGURE 3. A in A distinct new species of riparian rock-dwelling gecko (genus: Hemidactylus) from the southern Western Ghats
FIGURE 3. A) Femoral pores, pes, B) manus and C) body dorsum of the holotype of Hemidactylus paaragowli sp. nov., CESL 718.
FIGURE 2. A in A distinct new species of riparian rock-dwelling gecko (genus: Hemidactylus) from the southern Western Ghats
FIGURE 2. A) lateral, B) ventral and C) dorsal views of the head of the holotype of Hemidactylus paaragowli sp. nov., CESL 718.
FIGURE 3 in A new riparian Mantidactylus (Brygoomantis) frog from the Tsaratanana and Manongarivo Massifs in northern Madagascar
FIGURE 3. Preserved holotype of Mantidactylus schulzi sp. nov., in dorsal and ventral view, photographed in October 2017 (adult male; ZSM 653/2001, from Andampy Campsite, Manarikoba Forest, Tsaratanana Massif). Scale bar = 5 mm.
FIGURE 5 in A new riparian Mantidactylus (Brygoomantis) frog from the Tsaratanana and Manongarivo Massifs in northern Madagascar
FIGURE 5. Spectrogram (top, time-axis 1000 ms) and oscillogram (bottom) of one note of an advertisement call of the holotype of Mantidactylus schulzi sp. nov. from Andampy Campsite, Manarikoba Forest, Tsaratanana Massif. Recorded by M. Vences on 10–11 February 2001, 25–26°C air temperature.
FIGURE 1 in A new riparian Mantidactylus (Brygoomantis) frog from the Tsaratanana and Manongarivo Massifs in northern Madagascar
FIGURE 1. Maximum Likelihood phylogenetic tree based on DNA sequences (532 bp) of the 16S rRNA gene in Mantidactylus species of the subgenus Brygoomantis. Mantidactylus opiparis (subgenus Chonomantis) was used as the outgroup. Numbers at nodes are bootstrap values in percent (500 replicates). The inset map shows the approximate location of the known distribution points of Mantidactylus schulzi sp. nov.
FIGURE 4 in A new riparian Mantidactylus (Brygoomantis) frog from the Tsaratanana and Manongarivo Massifs in northern Madagascar
FIGURE 4. Specimens of Mantidactylus schulzi sp. nov. in life, in dorsolateral and ventral views. (a,b) Male holotype, ZSM 653/2001, from Andampy Campsite, Manarikoba Forest, Tsaratanana Massif. (c, d) Male paratype, ZMA 19375, from Camp 0, Manongarivo Massif.
FIGURE 2 in A new riparian Mantidactylus (Brygoomantis) frog from the Tsaratanana and Manongarivo Massifs in northern Madagascar
FIGURE 2. Haplotype network based on 357 bp of the nuclear Rag-1 gene in species of Mantidactylus (subgenus Brygoomantis). Colours denote different species, matching those used in Fig. 1.
FIGURE 2 in A new Microhyla species (Anura: Microhylidae) from riparian evergreen forest in the eastern Himalayan state of Arunachal Pradesh, India
FIGURE 2. Type specimens of Microhyla eos sp. nov. A–K, Holotype, ZSIC 14310, an adult female: A, dorsolateral view in life; B, dorsal view in preservation; C, ventral view in preservation; D, lateral view in life; E, lateral view of head in preservation; F, ventral view of hand in preservation; G, third finger tip; H, ventral view of foot in preservation; I, schematic illustration of webbing on foot; J, fourth toe tip; K, terminal phalanx of fourth toe; L, Paratype, ZSIC 14311, an adult female, dorsolateral view in life. Scale bars: 5 mm.
FIGURE 1 in A new Microhyla species (Anura: Microhylidae) from riparian evergreen forest in the eastern Himalayan state of Arunachal Pradesh, India
FIGURE 1. The type locality of Microhyla eos sp. nov., Rani Jheel in Namdapha National Park, in the state of Arunachal Pradesh, Northeast India.
FIGURE 4 in A new Microhyla species (Anura: Microhylidae) from riparian evergreen forest in the eastern Himalayan state of Arunachal Pradesh, India
FIGURE 4. Maximum Likelihood phylogram depicting the phylogenetic position and relationships of Microhyla eos sp. nov. based on 1,230 bp of the mitochondrial 16S rRNA and the nuclear BDNF gene sequences. Bayesian Posterior Probabilities (BPP) and RAxML bootstrap values of> 50% are indicated above and below the branches, respectively.
FIGURE 3 in A new Microhyla species (Anura: Microhylidae) from riparian evergreen forest in the eastern Himalayan state of Arunachal Pradesh, India
FIGURE 3. Schematic comparison of Microhyla eos sp. nov. with morphologically close congeners from South and Southeast Asia. A, Dorsolateral colouration and markings in life; B, dorsal markings; C, lateral markings; D, schematic illustration of structure and shape of digit tip on third finger (left) and fourth toe (right); E, schematic illustration of webbing on foot. Microhyla berdmorei, SDBDU 2018.3852, Barail, Assam, India; M. beilunensis, CIBA980059, Chaiqiao, Zhejiang Province, China; M. eos sp. nov., ZSIC 14310, Rani Jheel, Arunachal Pradesh, India; M. mixtura, dorsolateral and dorsal views in life (voucher not preserved, China), dorsolateral view, CIB 65706, Wanyuan Country, Sichuan Province, China; M. pulchra, dorsolateral and dorsal views in life (voucher not preserved, China), dorsolateral view, CIB 68886, Yizhang, Hunan Province, China. Image credits: M. Zhang (M. beilunensis, A–C), J. Jiang (M. mixtura, A–B; M. pulchra, A–B).
Figs 25–26 in New records of aquatic and riparian beetles (Coleoptera) for the fauna of the Vologda Oblast (Russia)
Figs 25–26. Limnichus sericeus: 25 — habitus, 26 — aedeagus, dorsal view. Scale bar: 1.0 mm. Рис. 25–26. Limnichus sericeus: 25 — габитус, 26 — Эдеагус, сверху. МасШтаб: 1.0 мм.
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