STREAM ECOLOGY & SELF PURIFICATION: An Introduction - Chapter 13 doc

... the left and right stream banks separately. Define the "left" and "right" banks by standing at the downstream end of the study stretch and look up- stream. Each bank is evaluated ... the larger nannoplankton. Most planktonic organisms fall into the rnicroplankton or net plankton cate- gory. The sizes range from the largest nannoplankton to about 2 mm (thou- sandt...

Ngày tải lên: 12/08/2014, 04:22

... flow, and the speed of flow changes to form a river. As it changes speed and slows, the river bot- tom changes from rock and stone to silt and clay. Plants begin to grow, stems thicken, and ... shape channels, or move signifi- cant quantities of sediment in all but sand-bed streams, which can experience change more rapidly. During extreme events, the greatest scour occurs, and the ......

Ngày tải lên: 12/08/2014, 04:22

... suspended or- ganisms, the plankton, such as phytoplankton (plants) and zooplankton (ani- mals), and some consumers such as insects and fish. Plankton are small organ- isms that can feed and reproduce ... water) and lentic (standing water) are highlighted. ' 13~ evern, N. R., King, D. L., and Ring, R., "Lake Classification Systems, Part I," The Michigan Riparian,...

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... Sediments Animal 'N' Excretion I Ammonia ++ Organic Nitrogen as Amino Acids Figure 3.3 Nitrogen cycle. the topic of stream ecology and self- purification, it is important to ... compounds. However, an important distinction between cycling of sulfur and cycling of ni- trogen and carbon is that sulfur is "already fixed." That is, plenty of sulfate an-...

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... Community ecology- the study of the structure and dynamics of animal and plant commu- nities. Population ecology provides modeling tools that can be used for predicting corn- munity structure and ... abandonment, the climax oak-hickory forest was restored. 5.6 POPULATION RESPONSE TO STRESS AND STREAM ECOLOGY It is important to understand that the dynamic balance of the stre...

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... the major determinant of stream water chem- istry locally as well. These "determinants" of stream water chemistry are actu- ally the stream& apos;s "DNA." More specifically, ... and very basic form. The intent has been to lay a foundation upon which the focus of this text, stream ecology and self- purification, can be built. Beginning with an introductio...

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... Publishing Company, Inc. Stream Pollutants 137 Man's actions are determined by his expediency. If it makes man's life more con- venient, less expensive or pleasanter, the stream and its ... pesticides, cleaning sol- vents, and many others-organic chemicals (6) Insoluble particles of soil, silt, and other inorganic and organic materials that can remain suspended in wate...

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... 4 13. 56 3.31 5 13. 52 3.58 6 13. 48 3.86 7 13. 44 4.14 8 13. 40 4.41 9 13. 37 4.65 10 13. 34 4.85 11 13. 31 5.02 12 13. 29 5.15 13 13.28 5.26 14 13. 27 5.33 15 13. 26 5.38 Fast River: 1 "C ... purification of or- ganic matter only. In this chapter, organic stream pollution and the self- purifi- cation process will be discussed. 12.2 SOURCES OF STREAM...

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... two to three days. 13. 5 Presence; absence 13. 6 Snags 13. 7 Transect 13. 8 Median 13. 9 Standard deviation 13. 10 Riffle areas 13. 1 1 Riparian vegetative 13. 12 Muddy-bottom Copyright © ... EPA 841-D-9 7-0 02,1997. Barlocher, R. and Kendrick, L., "Leaf conditioning by microorganisms." Oecologia 20: 35 9-3 62, 1975. Banyman, A. A., Population Systems: A Ge...

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... ANOVA. +Rodents +Rodents -Rodents -Rodents Effects of removal of +Ants -Ants +Ants -Ants Rodents Ants Initial Census 29 January 1977 1. Large plants 1.00 (35.8) 0.98 2.08 2.35 Increase b NS 2. Small plants 1.00 ... recombination and survival of plant species in heterogeneous environments. Many plants can reproduce vegetatively or by self- fertilization, but these mechanisms are not conduci...

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