Lecture 14

Question 1

what are some logitical considerations for mowing?

Answer 1

1. selectivity 2. time 3. frequency 4. intensity 5. spatial variation in patch characertisitcs 6. single versus multiple cuttings 7. incomplete removal

Question 2

what are types of selective removal?

Answer 2

1. Girdling 2. hand pulling 3. herbicide application 4. biological contol

Question 3

is grazing selective or non-selective?

Answer 3

selective because it selects species and pruning specific plant parts.

Question 4

mowing or cutting alters:

Answer 4

1. age structure 2. physical structure 3. reproductive output 4. competitive relations 5. resource availability 6. composition

Question 5

is mowing selective or non-selective?

Answer 5

non-selective because is does all species and all plant parts

Question 6

describe rotational mowing:

Answer 6

Mow one section of the hayfield at a time to maintain a variety of habitat conditions. Ideally, only one or 2 sections are mowed each year but timing can be adjusted to meet the needs of the producer.

Question 7

what are increasers/

Answer 7

increase in response to mowing

Question 8

what is a bird friendly method of mowing?

Answer 8

1. delay mowing 2. rotational mowing 3. mow from the inside out

Question 9

why might we mow?

Answer 9

to control spread of invasive species, also might mow for productive reasons.

Question 10

describe Girdling:

Answer 10

also called ring barking or ring barking is the process of completely removing a strip of mark around a trees uter circumerence, causing its death

Question 11

what are decreasers?

Answer 11

decreae in response to mowing

Question 12

what are invaders?

Answer 12

stimulated by mowing but also might be able to control theur colonization by mowing

Question 13

what is a refuge?

Answer 13

buffer of unmowed cool season grasses for animals to go