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Limnology exam 1 1-2
Limnology exam 1
| Question | Answer |
|---|---|
| regional properties | Climae, geology, topography |
| catchment attributes | Vegetaion, soil, hydrology |
| morphometry | origin and formation of lakes and rivers |
| Apotic zone | the volume of water or area of sediment where photosynthetically available radiation (PAR) is <1% of the entering water and where plant respiration is larger than plant photosynthesis (R>P) |
| drainage basin (watershed) | area of land that drains towards an aquatic system |
| Epilimnion | surface- mixed layer in those lakes that exhibit vertical stratification |
| hypolimnion | deep, cool layer of a stratified lake, charactierized by a greatly reduced turbulence and usually insufficient light to allow algal growth |
| metalimnion | transition layer of water in which the temp. declines with the increaseing depth |
| macrophytes | community of multicellular emergent large plants dominating the shallow portions of littoral zones |
| littoral zone | near shore region of lakes and lowland rivers where the sediments lie within th photic zone. |
| limnetic zone | open water region beyond the littoral zone |
| profundal zone | deep region of stratifying lakes, but mostly used with reference to deep-water sediments and their biota |
| Bernhardus Varenius | 1650,Categorized lakes in four types based on inflows. We still speak of this system in a modified form. |
| Francois Alphonse Forel | 1901, first textbook of limnology |
| August Thienemann | Lake Classification 1926, the basic conceptual foundations of cycling of nutrients in water and food cycle relationships among producers, consumers, and decomposers. 1917, he was appointed director of the Hydrobiological Anstalt at Plön, |
| Einar Naumann | 1919 proposed a direct relationship between the phosphuros, nitrogen, and calcium supply. he also coined the terms oli, eu, and meso, and dystrophic lakes by looking at regional lake types based on profundal fauna and oxygen distributions |
| Stephen Forbes | 1887: The lake as a microcosmHe was among the first to study North American inland lakes. |
| Edward Birge | a professor and administrator at the University of Wisconsin-Madison, one of the pioneers of the study of limnology, the study of inland bodies of water such as rivers and lakes. |
| CHANCEY JUDAY | one of the two founders of limnology, studied planktonic communities which led to investigations of water column thermal structure, distribution of dissolved gases, and light penetration, along with the mechanisms controlling these features. |
| Pietro Secchi | invinted the secchi disc |
| Charles Elton | Niche concept, Niches are linked into food chains, Pyramid of numbers, Matter flows through “food cycle” |
| Evelyn Hutchinson | aquatic ecologist, focusing particularly on lake ecology. Also known as the father of modern limnology, biogeochemistry |
| oligotrophic | poorly nourished |
| eutrophic | well mourished |
| mesotrophic | medium nourished |
| humic/ brown water lakes | colored lakes |
| dystrophic | defectively nourished |
| allochthonous | sources of carbon come from outside the aquatic system (such as plant and soil material |
| autochthonous | sources of carbon from within the system, such as algae and the microbial breakdown of particulate organic carbon |
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