scholarly journals Southernmost high mountain lakes in Europe (Sierra Nevada) as reference sites for pollution and climate change monitoring

Limnetica ◽  
1992 ◽  
Vol 8 (1) ◽  
pp. 39-47
Author(s):  
Rafael Morales-Baquero
Keyword(s):  
Climate Change ◽  
Sierra Nevada ◽  
Mountain Lakes ◽  
High Mountain ◽  
Reference Sites ◽  
High Mountain Lakes ◽  
Change Monitoring

scholarly journals Responses of Benthic Macroinvertebrate Communities of Two Tropical, High-Mountain Lakes to Climate Change and Deacidification

Diversity ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 243
Author(s):  
Javier Alcocer ◽  
Luis A. Oseguera ◽  
Diana Ibarra-Morales ◽  
Elva Escobar ◽  
Lucero García-Cid
Keyword(s):  
Climate Change ◽  
Species Richness ◽  
Water Temperature ◽  
Water Level ◽  
Environmental Changes ◽  
Mountain Lakes ◽  
High Mountain ◽  
Macroinvertebrate Communities ◽  
High Mountain Lakes ◽  
La Luna

High-mountain lakes are among the most comparable ecosystems globally and recognized sentinels of global change. The present study pursued to identify how the benthic macroinvertebrates (BMI) communities of two tropical, high mountain lakes, El Sol and La Luna, Central Mexico, have been affected by global/regional environmental pressures. We compared the environmental characteristics and the BMI communities between 2000–2001 and 2017–2018. We identified three principal environmental changes (the air and water temperature increased, the lakes’ water level declined, and the pH augmented and became more variable), and four principal ecological changes in the BMI communities [a species richness reduction (7 to 4), a composition change, and a dominant species replacement all of them in Lake El Sol, a species richness increase (2 to 4) in Lake La Luna, and a drastic reduction in density (38% and 90%) and biomass (92%) in both lakes]. The air and water temperature increased 0.5 °C, and lakes water level declined 1.5 m, all suggesting an outcome of climate change. Contrarily to the expected acidification associated with acid precipitation, both lakes deacidified, and the annual pH fluctuation augmented. The causes of the deacidification and the deleterious impacts on the BMI communities remained to be identified.

Photoreactivity of Dissolved Organic Matter from High-Mountain Lakes of Sierra Nevada, Spain

2001 ◽  
Vol 33 (4) ◽  
pp. 426 ◽  
Author(s):  
I. Reche ◽  
E. Pulido-Villena ◽  
J. M. Conde-Porcuna ◽  
P. Carrillo
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Sierra Nevada ◽  
Mountain Lakes ◽  
High Mountain ◽  
High Mountain Lakes

Nitrogen-phosphorus relationship in high mountain lakes: effects of the size of catchment basins

1999 ◽  
Vol 56 (10) ◽  
pp. 1809-1817 ◽  
Author(s):  
Rafael Morales-Baquero ◽  
Presentación Carrillo ◽  
Isabel Reche ◽  
Pedro Sánchez-Castillo
Keyword(s):  
Chlorophyll A ◽  
Sierra Nevada ◽  
Inorganic Nitrogen ◽  
Soluble Reactive Phosphorus ◽  
Mountain Lakes ◽  
Saharan Dust ◽  
High Mountain ◽  
High Mountain Lakes ◽  
Small Catchment ◽  
Catchment Areas

We analyzed the changes in epilimnetic total nitrogen (TN), total phosphorus (TP), dissolved inorganic nitrogen (DIN), and soluble reactive phosphorus (SRP) in 31 small high-mountain lakes in the Sierra Nevada (Spain) during an annual cycle, just after the spring thaw, and in the middle of the growing season. Chlorophyll a, TN, and TP increased, whereas the TN:TP ratio fell substantially between the two periods, reaching values generally between 25 and 10 (by weight). On the contrary, DIN, SRP, and DIN:SRP ratios were similar for both periods in each lake. DIN:SRP ratios generally ranged from 5 to 20 (by weight). This ratio was low in the lakes with small catchment areas and increased progressively with catchment basin size. A regression analysis for the smallest catchments showed that chlorophyll a concentrations were not accounted for by variability in TP concentration. The results obtained are discussed in relation to the influence of episodes of Saharan dust, rich in P, reaching the Southern Mediterranean area.

Patterns in the composition of the rotifer communities from high mountain lakes and ponds in Sierra Nevada (Spain)

Hydrobiologia ◽  
1989 ◽  
Vol 186-187 (1) ◽  
pp. 215-221 ◽  
Author(s):  
R. Morales-Baquero ◽  
L. Cruz-Pizarro ◽  
P. Carrillo
Keyword(s):  
Sierra Nevada ◽  
Mountain Lakes ◽  
High Mountain ◽  
High Mountain Lakes ◽  
Rotifer Communities
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