yalca

yalca

[′yäl·kə]
(meteorology)
A local name for a severe snowstorm with a strong squally wind which occurs in the Andes Mountain passes of northern Peru.
References in periodicals archive ?
We studied three shallow lakes, which differ in their regime: el Triunfo, a clear vegetated shallow lake with abundant submerged vegetation (mainly Ceratophyllum demersum) and low phytoplankton abundances (35[degrees]51S, 57[degrees]52'W); El Burro, a turbid shallow lake with high abundances of phytoplankton (35[degrees]42'S, 57[degrees]55'W) and Yalca, an inorganic turbid shallow lake with high amounts of suspended solids (35[degrees]35'S, 57[degrees]55'W).
In El Burro and Yalca, bacterioperiphyton samples were taken at 3 (t1), 10 (t2) and 20 days (t3), whereas in El Triunfo, samples were taken at 3 (t1), 7 (t2), 10 (t3) and 17 days (t4).
El Triunfo exhibited the highest hybridization percentages (average 60.6%), intermediate values were observed in Yalca (average 47.6%), whereas El Burro showed the lowest values (average 29.5%).
Alphaproteobacteria was the most abundant group in the three shallow lakes and presented the highest hybridization percentage (average values: 46.5% in El Triunfo, 31% in El Burro and 54.2% in Yalca).
The Eubacteria hybridization percentages were similar in El Triunfo and El Burro (average values 77%, and 79.6% respectively), whereas Yalca showed the lowest values (65.4% on average).
On average, the second largest group was Betaproteobacteria in El Triunfo and Yalca (hybridization percentage 22.6% and 14.11% respectively), and Gammaproteobacteria in El Burro (hybridization percentage 24.6%).
In Yalca, Alphaproteobacteria showed an increase in their abundances with time (RM ANOVA factor: time P < 0.01; factor: bacterial group P < 0.02).
In Yalca, the lower values of DIN, conductivity and turbidity in comparison with those reported in previous studies (Allende et al., 2009) could be tied to a dilution effect due to an increase in the hydrometric level of the shallow lake (personal observation).
Samples 1-4: El Triunfo (samples taken at t0, t1, t2 and t3 respectively); samples 5-8: El Burro (samples taken at t0, t1, t2 and t3 respectively); samples 9-12: Yalca (samples taken at t0, t1, t2 and t3 respectively).
Samples 1-4: El Triunfo (samples taken at t1, t2, t3 and t4 respectively); samples 5-7: El Burro (samples taken at t1, t2 and t3 respectively); samples 8-10: Yalca (samples taken at t1, t2 and t3 respectively).
What strikes me most about this masterful verse is the reflexive and meandering way in which the yalca relates his dream experience.