Dirt water Flashcards

Lec 4

1
Q

type of aquatic habitat defined based on what two things

A

Geology and hydrology

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2
Q

Do small or large habitats tend to change quicker

A

Small

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3
Q

_________ patterns determine spatial and temporal distribution of precipitation

A

Global air circulation

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4
Q

how do mountains create additional precipitation

A

moist air pushed in from sea travels up the mountains, temp decreases up the mountains = can’t hold on to moisture = rain falls

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5
Q

Global air circulation patterns driven by

A

Temperature, topography and position of continents

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6
Q

Not all rain reaches aquatic habitats. What happens to this precipitation?

A
  • transpiration by plants
  • evaporate
  • infiltrate (into soil)
  • runoff (back to ocean)
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7
Q

water yield def

A

Amount of precipitation that ends up as runoff

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8
Q

Equator vs sub tropics, which has a higher water yield

A

Equator because High precipitation and low evaporation (because way more cloud coverage) = keep more water in environment

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9
Q

what is water yield impacted by

A

Temperature, precipitation and soil

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10
Q

Low water yield = ______ aquatic ecosystems

A

Few/low

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11
Q

Water moves through the ground via

A

Percolation and subsurface flow

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12
Q

T/F: Percolation moves water down from the saturated to unsaturated zone

A

FALSE
Moves water from the UNsaturated to the Saturated zone

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13
Q

I’m the prof and I’m digging into the ground to make my basement. Oh no, my shovel hit water and now there’s a geyser spewing water from the ground. I probably hit a ______ aqua fire

A

Confined aquafier
Because its saturated so more likely to be high pressure

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14
Q

Water moves up from the saturated to unsaturated zone at the

A

Capillary fringe

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15
Q

Unsaturated zone has ____ oxygen whereas saturated zone has ____ oxygen

A

High
Low

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16
Q

Confined aquafier: water is _______

A

Saturated

17
Q

Explain how water can move into a confined aquafier via plate tectonics

A

unconfined aquafier can get moved around by plate tectonics over time -> makes a bubble of water that can’t move = confined.

18
Q

T/F: typically more invertebrates living in confined aquafier

A

FALSE
More life in UNconfined aquafier because lots more movement and lots more available oxygen

19
Q

percolation definitiaon and what is determined by what

A

Movement of water from unsaturated to saturated zone
Determined by soil texture and composition

20
Q

T/F: fine particles like clay have slower percolation than coarse particles like sand

A

True

21
Q

Recharge definitation

A

Rate of water percolation into saturated zone

22
Q

Hydraulic conductivity definition and what does it depend on

A

Rate of flow of water through soil
Depends on permeability/grain size

23
Q

T/F: small clay has high hydraulic conductivity

A

FALSE
Small clay = water moves slowly through it = low hydraulic conductivity

24
Q

Porosity definition

A

Amount of water that can be held in sediment (space between sediment)(

25
Q

As pore size increases, what two things happen

A

Water drains faster
More water can be held at saturation

26
Q

Homogenous groundwater habitats: groundwater flows through regions of _______
Water flows in ________ directions

A

Same things (particle size and arrangement)
Predicable

27
Q

Heterogenous groundwater habitat:
Groundwater flow through regions of __________
Water flows in _______ directions

A

Variable substrate types (different things)
Variable directions and speeds

28
Q

Karst landforms:
Occurs in _______
Water flowing through bedrock can ______ that material
Fish and other invertebrates ________ to isolated environment over time

A

Limestone/bedrock
Dissolve
Adapt

29
Q

Hyporheic zone: definition, what happens at that location

A
  • transition zone (ecotone) at bed of aquatic ecosystems
  • exchange materials and organisms between ground and surface habitats