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Midterm

ENH 617 Study Guide - Midterm Guide: Ecological Succession, Benzene, Experience Point


Department
Environmental Health
Course Code
ENH 617
Professor
Marcia Maguire
Study Guide
Midterm

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BIOMES
1: Air/water presence of life is called _____________
2.biological and chemical processes necessary for species, communities and ecosystems to
survives is ___________ diversity.
3: _________ biome is found in america and europe . it is treeless , low vegetaion mosty consist
of ______ ,_______________and _________
4. Temprature in Artic Tundra is _____ in winters and ______ in summers.
5: Artic tundra is treeless , has permaforst soil and precipation is less than ___________
6 : Coniferous forest are found in ________________ hemisphere.
7 __________________ is also known as everygreen coniforous forest . They have long cold
winters and short summers. Located south of arctic tundra.
8: Taiga has discontinous ____________ and glasciated soi ( thin layer)
9: .________________ is on higher altitude , they have no permafrost and precipation is higher.
10: ______________ have dense , sturdy tree and closed canopies.
11 :_________ are characterized by long periods of drought , rainfal comes in forms of thunder
storms. They are found in arid or semi arid areas ( 25 - 75 mm of precipations
12 :___________ trees shed leaves in autumn.
13 : _____ is the important aboitic factor in taiga. Tempratures in winter are recorded as low as
_____ and 30 c in summers.
14: ______________ is the name used to describe north american grasslands.
15 Non grass species are called ______________ such as wildflowers.
16: In North America the prairies are dominated by two types of grass _______ and bunch.
17:In North America _____________ biome is characterized by a high species diversity – e.g.
maple-basswood, oak-pine, beech-maple .
18 : Grassands have great diversity , moonsoons in _________- , asia is characterized by arid
grasslands and north amercia by _________ species.
19 : __________________ is similar to taiga, with spruce, jack pine and Eastern white pine
being the dominant species
20: ____________________ is the dominant tree species in taiga.
21 : ___________is located at higher elevations but the structure is simiar to boreal forest.
22: Coastal coniferous forest have mider tempratures and more ________ than boreal and
montane conifer forest. They are dominated by ____________ species. ________ is only found

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in oregon and california.
23:climate not vegatation is the key characteristics of __________. There evaporation exceeds
precipations. Tropical , temperate and cold temperatures.
24: Monjave , sonoran , chihuahaun and great basin are the four types of deserts. _______ has
cooler temperatures , high elevation and winter snow.
25:Chapparel has ___________-- climiate with winter rain and summer drought. It is dominated
by ________
26 : __________biomes are replaced by crops and pastures.
27 : _____________ is characterized by physcial structure, It has temperate and tropical forest.
28 : __________interlocking branches that limits light penetration to the forest floor
29 : species that can complete reproduction during Spring or can photosynthesize at very low
light intensity ___________
30: shrubs are ________ and woody shrubs.
31:Smaller tree species and saplings – must be able to photosynthesize at low light intensity are
called ______-.
32 : Forests that grows in the equator are called _________.
33: tropical rainforests have _____ temperatures and 10 to 50 cm of rainfall every month.
34:____________ formed through glacial activity, earthquakes and changing the course of rivers
35: __________systems contains water that does not flow. They contain a large proportion of
____________ but only a small proportion of global water
36: ______________where the rate of photosynthesis is balanced with the rate of respiration of
plants and animals. It occurs when the light intensity has been reduced to _% of surface
intensity.
37 : ___________layer the light intensity is insufficient to allow photosynthesis.
38 : profundal zone is knowns as __________ ( hetrotrphic only) zone and __________ is the
bottom zone.
39 :________-- top layer with relatively high temperatures lower density. oxygen concentrarion is
higher,
40 : _______ is the zone on the shorline where the rooted and floating plants can survice.
41: Lotic systems consist of flowing _______ and rivers. water volume is determined by rainfall ,
storms and downstream resistance.
42: oxygen levels tend to be higher in __________ because of the mixing and churning of the
water and because of a greater surface-to-volume ratio

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43 : Temperature in lotic systems are affected by _____ and current amount of shading.
44: _______________ biomes interface between terrestrial biomes and freshwater environments
45 : __________-lower layer with lower temperature and higher density and lower oxygen
concentration.
46 : Most of the energy flow in lotic systems comes from external sources – litter and detritus
washed downstream in _________system.
47: Wetlands are crucial for feeding sites , ____________ and over wintering. It is flooded with
shalow water.
48: In wetlands the water table is near the surface less than _________metres.
50 : __________ the layer where light intensity is sufficient to allow photosynthesis.
51: Oxygen concentrations are high in the _________ due to gaseous exchange and
photosynthesis
52 : Oxygen concentration are low in the __________ due to hetrotrophic respiration , animas
and organisms feeding on dead material.
53: Marches contains species that float such as _____________.
54: Swamps are simiar to marches but they are dominated by ______ and trees.
55 : A zone occupied by plankton and is to deep for rooted plants ________
60 : _____________zone deeper than the littoral zone, but above the compensation point.
61:__________ contain soft stemmed hebacus plants which are rooted below the water surface
but proture above the water.
62: ___________ have no outlet for water and they are glaciated regions between nothern US and
Canada.
63:_________ contain Typical species are Sphagnum moss, cottongrass, sundews,
pitcher plants and poison oak
64 : _________have zones similar to freshwater lentic systems.Such as depth increases in
__________ zone.
65: Zone above the continenta sheft is called ____________
66: ___________ zone of theopen ocean has great biodiversity from phankton to vertebrates. It
also includes biolumicient organisms.
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