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Full-Text Articles in Life Sciences
Conservation Implications Of A Marbled Salamander, Ambystoma Opacum, Metapopulation Model, Ethan B. Plunkett
Conservation Implications Of A Marbled Salamander, Ambystoma Opacum, Metapopulation Model, Ethan B. Plunkett
Masters Theses 1911 - February 2014
Amphibians are in decline globally and a significantly greater percentage of ambystomatid salamander species are in decline relative to other species; habitat loss contributes significantly to this decline. The goals of this thesis is to better understand extinction risk in a marbled salamander (ambystoma opacum) population and how forestry effects extinction risk. To achieve this goal we first estimated an important life history parameter (Chapter 1) then used a metapopulation model to estimate population viability and determine what aspects of their life history put them most at risk (Chapter 2) and finally predicted extinction risk in response to hypothetical forestry …
Records Of Aquatic Beetles (Helophoridae, Hydrophilidae, Hydrochidae, Dytiscidae) And Physico-Chemical Parameters In A Natural Lake (Artvin, Turkey), Ümi̇t İncekara
Turkish Journal of Zoology
Some ecological requirements of aquatic Coleoptera species were studied in a natural lake. Water beetle samples, collected in 2007 from the National Park Sahara-Karagöl belonging to the families Helophoridae, Hydrophilidae, Hydrochidae, and Dytiscidae were identified and listed. Both physical (conductivity and temperature) and chemical (pH, dissolved oxygen, total dissolved solids, hardness, organic matter, chloride, phosphate, and some metal ions) parameters of the inhabited water were measured.
Ecological Succession Of Freshwater Ostracoda (Crustacea) In A Newly Developed Rheocrene Spring (Bolu, Turkey), Okan Külköylüoğlu
Ecological Succession Of Freshwater Ostracoda (Crustacea) In A Newly Developed Rheocrene Spring (Bolu, Turkey), Okan Külköylüoğlu
Turkish Journal of Zoology
Six species of ostracod (Candona neglecta, Heterocypris incongruens, Ilyocypris bradyi, Darwinula stevensoni, Pseudocandona compressa, and Psychrodromus olivaceus) were collected from a newly developed spring between October 2001 and October 2004. The first 5 species have cosmopolitan distribution in the Holarctic region. The ratio of non-cosmopolitan to cosmopolitan species (called 'pseudorichness') was 0.2, suggesting dominance of cosmopolitan species. Among the species, C. neglecta displayed the highest tolerance to 6 different environmental variables, although its estimated optimum values varied. Except foor redox potential and salinity, optimum values for H. incongruens were the highest. High tolerance and optimum values seemed to provide more …