Response to a smelter closure in Cascade mountain lakes

1992 ◽  
Vol 61 (3-4) ◽  
pp. 325-338 ◽  
Author(s):  
E. B. Welch ◽  
D. E. Spyridakis ◽  
K. B. Easthouse ◽  
T. J. Smayda ◽  
L. C. Duncan
Keyword(s):  
Mountain Lakes ◽  
Cascade Mountain

scholarly journals Three new Psammothidium species from lakes of Olympic and Cascade Mountains in Washington State, USA

Phytotaxa ◽  
2013 ◽  
Vol 127 (1) ◽  
pp. 49 ◽  
Author(s):  
MIHAELA D. ENACHE ◽  
MARINA POTAPOVA ◽  
RICH SHEIBLEY ◽  
PATRICK MORAN
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Elevation ◽  
Mountain Lakes ◽  
Washington State ◽  
Cascade Mountains ◽  
Cascade Mountain ◽  
Similarities And Differences ◽  
Scanning Electron ◽  
Silica Frustules

Populations of several Psammothidium species were found in core sediments from nine remote, high elevation, ultraoligotrophic and oligotrophic, Olympic and Cascade Mountain lakes. Three of these species, P. lacustre, P. alpinum, and P. nivale, are described here as new. The morphology of the silica frustules of these species was documented using light and scanning electron microscopy. We discuss the similarities and differences with previously described Psammothidium species.

Materials to the lichen flora of the Bauntovsky District, Republic of Buryatia

2020 ◽  
Vol 54 (1) ◽  
pp. 149-164
Author(s):  
T. M. Kharpukhaeva ◽  
A. V. Lishtva
Keyword(s):  
Mountain Lakes ◽  
Lichen Species ◽  
East Siberia ◽  
Alectoria Sarmentosa ◽  
The Republic ◽  
Interesting Species ◽  
Lichen Flora

The paper presents data on 248 lichen species from the Bauntovsky District of the Republic of Buryatia, of them 233 are new to the district. Alectoria sarmentosa subsp. vexillifera new to East Siberia, and 6 species new to the Republic of Buryatia — Arthonia didyma, Aspicilia aquatica, Immersaria athroocarpa, Ionaspis lacustris, Ramboldia elabens, and Parmelia asiatica. Very interesting species is an aquatic lichen Collema ramenskii recorded in mountain lakes.

scholarly journals Assisted colonization of a regionally native predator impacts benthic invertebrates in fishless mountain lakes

2020 ◽  
Author(s):  
Allison L. K. Banting ◽  
Mark K. Taylor ◽  
Rolf D. Vinebrooke ◽  
Chris M. Carli ◽  
Mark S. Poesch
Keyword(s):  
Benthic Invertebrates ◽  
Mountain Lakes ◽  
Native Predator ◽  
Assisted Colonization

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.

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