نتایج جستجو برای: mighan lake

تعداد نتایج: 42302  

The current study deals with the physicochemical characterization, temporal variability and trophic state evaluation of a post glacial mountain lake in eastern Himalaya during the period of 2014-2016. Notable seasonal variations are recorded for physicochemical parameters of lake water. The values for electrical conductivity, total suspended solids, total dissolved solids, total alkalinity and ...

2003
MICHAEL J. WILBERG MICHAEL J. HANSEN CHARLES R. BRONTE

—Populations of lake trout Salvelinus namaycush in Lake Superior collapsed in the late 1950s due to overfishing and predation by sea lampreys Petromyzon marinus. A binational effort to restore the lean morphotype of lake trout began with the stocking of hatchery-reared fish followed by the chemical control of sea lampreys and closure of the commercial fishery. Previous comparisons of the contem...

2015
Brian F. Cumming Kathleen R. Laird Irene Gregory-Eaves Kyle G. Simpson Michael A. Sokal Rick N. Nordin Ian R. Walker

Citation: Cumming BF, Laird KR, Gregory-Eaves I, Simpson KG, Sokal MA, Nordin RN and Walker IR (2015) Tracking past changes in lake-water phosphorus with a 251-lake calibration dataset in British Columbia: tool development and application in a multiproxy assessment of eutrophication and recovery in Osoyoos Lake, a transboundary lake in Western North America. Front. Ecol. Evol. 3:84. doi: 10.338...

In this study, otolith morphology and otolith contour from big-scale sand smelt, Atherina boyeri were analyzed in Lake Eğirdir and Lake İznik (natural lakes), and Hirfanlı Dam Lake (artificial lake). The otolith contour and sixteen otolith morphological characters such as width, depth, shape, sulcus acusticus shape, ostium, cauda, rostrum size-shape, and thickness, antirostrum size-shape, and t...

In this study, otolith morphology and otolith contour from big-scale sand smelt, Atherina boyeri were analyzed in Lake Eğirdir and Lake İznik (natural lakes), and Hirfanlı Dam Lake (artificial lake). The otolith contour and sixteen otolith morphological characters such as width, depth, shape, sulcus acusticus shape, ostium, cauda, rostrum size-shape, and thickness, antirostrum size-shape, and t...

In the last decade, the lake tourism as one of the newest branches of natural tourism has been under attention of scientific societies. So that this type of tourism has grown significantly and many economic benefits for host communities has brought. The aim of this study is evaluating the factors affecting lake tourism development in Iran. In this regard, a wide variety of indicators in the dim...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Kathryn R Elmer Chiara Reggio Thierry Wirth Erik Verheyen Walter Salzburger Axel Meyer

The Great Lakes region of East Africa, including Lake Victoria, is the center of diversity of the mega-diverse cichlid fishes (Perciformes: Teleostei). Paleolimnological evidence indicates dramatic desiccation of this lake ca. 18,000-15,000 years ago. Consequently, the hundreds of extant endemic haplochromine species in the lake must have either evolved since then or refugia must have existed, ...

2010
John R. O ' Connor

While the Otsego Lake watershed supports a large diversity of fish species, the list present in the watershed has been continuously updated since the original publication by McWatters (1980,1983). New species have been documented by Hayes and Foster (1989), Foster (1989), Foster and ColIura (1990), and Brooking ( 1991) and the extinction of a species has also been reported by Lehman el al., (19...

2010
David M. Warner

Fish were collected from four sites on Otsego Lake on 3 and 4 August 98 to describe littoral populations and diversity and to make a comparison with a similar study conducted in 1986. A haul seine was used to catch the fish, which were marked, weighed, measured and released. The Peterson mark-recapture method was used to estimate abundance at the four sites. Margalefs diversity index was used t...

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