Native salamanders and introduced fish: Changing the nature of mountain lakes and ponds

Fact Sheet ◽  
2003 ◽  
pp. 1-2
Author(s):  
Gary L. Larson ◽  
Robert L. Hoffman
Keyword(s):  
Mountain Lakes ◽  
Introduced Fish

Recovery of zooplankton assemblages in mountain lakes from the effects of introduced sport fish

2001 ◽  
Vol 58 (9) ◽  
pp. 1822-1830 ◽  
Author(s):  
David B Donald ◽  
Rolf D Vinebrooke ◽  
R Stewart Anderson ◽  
Jim Syrgiannis ◽  
Mark D Graham
Keyword(s):  
Fish Community ◽  
Mountain Lakes ◽  
Zooplankton Species ◽  
Introduced Fish ◽  
Fish Stocking ◽  
Fish Removal ◽  
Fishless Lakes ◽  
Chi Squared ◽  
Community Complexity ◽  
Sport Fish

Impacts of introduced fish on zooplankton assemblages of lakes may persist for decades following fish removal. We tested this hypothesis by comparing zooplankton assemblages from four categories of lakes located in western Canadian mountain parks including lakes without and with fish that differed in their fish community complexity and fish-stocking history. Zooplankton species richness was greatest in lakes with a complex community of fish and least in pristine fishless lakes. Canonical correspondence analysis showed that taxonomic shifts in zooplankton assemblages could be attributed to differences in fish-stocking history between the study lakes. In fishless lakes, larger copepods (Eucyclops agilis, Diaptomus leptopus), cladocerans (Diaphanosoma, large Daphnia), and chaoborids were abundant, whereas in the presence of fish, small crustaceans were more common and chaoborids were relatively rare. Once introduced trout were absent from lakes, recovery trajectories for zooplankton showed a general taxonomic shift towards assemblages characteristic of fishless lakes that had never been fish stocked. Based on separation between previously stocked fishless lakes and naturally fishless mountain lakes in ordination space (chi-squared distance), taxonomic recovery by zooplankton assemblages from the influence of introduced salmonids may require an average of 19 years.

scholarly journals Mountain lakes of Mont Avic Natural Park: ecological features and conservation issues

2019 ◽  
Vol 79 (1) ◽  
Author(s):  
Rocco Tiberti ◽  
Francesco Buscaglia ◽  
Marco Armodi ◽  
Cristiana Callieri ◽  
Fabio Ribelli ◽  
...  
Keyword(s):  
Organic Pollution ◽  
Mountain Lakes ◽  
Reference Database ◽  
Ecological Knowledge ◽  
Italian Alps ◽  
Introduced Fish ◽  
Ecological Data ◽  
Natural Park ◽  
Ecological Features ◽  
Conservation Problem

Mountain lakes provide some fundamental ecosystem services (i.e., water supply for drinking and energy production) and have an enormous aesthetic and conservation value. Ecological knowledge on mountain lakes, however, is still scarce and limited to a few geographical areas and mainly to abiotic features. To fill this gap, a limnological campaign was carried out on 19 lakes of the Mont Avic Natural Park (Aosta, Western Italian Alps). Bathymetric maps of the lakes are provided in this paper, as is data on the lakes’ physical properties, chemistry, nano- and pico-plankton, zooplankton, littoral macroinvertebrates, amphibians and introduced fish. The aim of this study was to create a reference database of ecological data for the development of new studies and conservation measures/actions. To this end, ecological data are discussed from both a limnological and a conservation perspective, allowing for the identification of major threats affecting the lakes in the protected area. Despite local threats which include water exploitation, organic pollution, and introduced fish, water quality was good. Lake biota can however be affected by such threats, in particular introduced fish (Salmonidae and Cyprinidae), representing a challenging conservation problem.

scholarly journals Predation by introduced fish can magnify the terrestrial arthropod subsidies in mountain lakes

2018 ◽  
Vol 75 (9) ◽  
pp. 1453-1464 ◽  
Author(s):  
Matteo Rolla ◽  
Geordie Biffoni ◽  
Stefano Brighenti ◽  
Rocco Iacobuzio ◽  
Kevin Liautaud ◽  
...  
Keyword(s):  
Brook Trout ◽  
Food Resource ◽  
Mountain Lakes ◽  
High Mountain ◽  
Introduced Fish ◽  
Fishless Lakes ◽  
Terrestrial Arthropods ◽  
Conservation Implications ◽  
Air Interface ◽  
Terrestrial Subsidies

A portion of the terrestrial subsidies to lentic habitats consists of arthropods. In high mountain, originally fishless lakes, terrestrial arthropods are an important seasonal food resource for introduced fish. Here we investigate how brook trout (Salvelinus fontinalis) can alter the input of terrestrial arthropods in 10 high mountain lakes contrasting for their stocking history (with and without fish or manipulated for fish eradication). We used a food consumption model to calculate the minimum and maximum number or biomass of arthropods consumed by fish, and we found that they can exceed, by several folds, the number or biomass of arthropods sinking into the lakes, at least under the metabolic rates expected for fish for most of the summer. We interpret this result as an indirect indication that arthropods usually cannot overcome the surface tension at the lake surface and that fish can work as a vector across the water–air interface. We infer that pathways for dead and live arthropods to leave the lakes do exist and fish can transfer into the water column many arthropods whose fate was leaving the lakes, which may have overlooked ecological and conservation implications.

scholarly journals Introduced fish in Pyrenean high mountain lakes: impact on amphibians and other organisms, and conservation implications

Limnetica ◽  
2020 ◽  
Vol 39 (1) ◽  
pp. 283-297
Author(s):  
Alexandre Miró ◽  
Marc Ventura
Keyword(s):  
Mountain Lakes ◽  
High Mountain ◽  
Introduced Fish ◽  
High Mountain Lakes ◽  
Conservation Implications

Predation by introduced fish constrains the thermal distribution of aquatic Coleoptera in mountain lakes

2012 ◽  
Vol 57 (4) ◽  
pp. 803-814 ◽  
Author(s):  
GUILLERMO DE MENDOZA ◽  
EUGENIO RICO ◽  
JORDI CATALAN
Keyword(s):  
Mountain Lakes ◽  
Introduced Fish ◽  
Thermal Distribution

Inter-taxonomic differences in bacterioplankton community assembly in oligotrophic mountain lakes of east Japan

2015 ◽  
Vol 75 (3) ◽  
pp. 251-257 ◽  
Author(s):  
M Fujii ◽  
T Hirao ◽  
H Kojima ◽  
M Fukui
Keyword(s):  
Community Assembly ◽  
Mountain Lakes ◽  
Bacterioplankton Community

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
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