1390-6542
1390-6542
S1390-65422018000300012
10.29019/enfoqueute.v9n3.211
Ecuador
00
09
2018
00
09
2018
9
3
12
28
[
1977
]
[
2013
153-5
]
[
2017
26
2
2
1-9
]
[
2009
]
[
1999
]
[
2005
27
]
[
2003
]
[
2003
]
[
2011
]
[
2004
7
14
14
64-73
]
[
Dpto. Sue. Frn- ESPOCH
2015
]
[
EA- ESPOCH
2016
]
[
FAO
2009
]
[
FAO
2012
64
]
[
FAO
2014
]
[
FAO
2015
]
[
2012
95
]
[
2013
]
[
2016
22
3
3
37-48
]
[
1967
]
[
IAVH
2006
]
[
INIAP
2012
95
]
[
2003
235
]
[
2009
19
1
1
19-34
]
[
2007
7
1
1
142-59
]
[
2008
23
1-14
]
[
MAE
2013
]
[
Margalef
1958
1
84
]
[
2011
135
]
[
Ministerio del Ambiente
2011
]
[
Ministerio del Ambiente
2013
]
[
2001
]
[
2002
92
]
[
2017
]
[
2014
]
[
2005
]
[
2006
45
19-25
]
[
2007
16
3
3
81-90
]
[
2012
34
1
1
1-24
]
[
2011
]
[
1949
1
84
]
[
1999
]
[
1960
1
84
]
[
Software Estimates 9.10
2016
]
[
2012
62
1-4
1-4
25-37
]
[
2014
17
2
2
203-29
]
[
1960
]