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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha : |
21/02/2014 |
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Actualizado : |
09/09/2020 |
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Autor : |
PARUELO, J.M.; GUERSCHMAN, J.P; PIÑEIRO, G.; JOBBÁGY, E.G.; VERÓN, S.R; BALDI, G.; BAEZA, S |
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Afiliación : |
J.M. PARUELO, Laboratorio de Análisis Regional y Teledetección, IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y CONICET. Buenos Aires, Argentina. Ecología Terrestre, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; GUERSCHMAN, J.P., Laboratorio de Análisis Regional y Teledetección, IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y CONICET. Buenos Aires, Argentina.; G. PIÑEIRO, Laboratorio de Análisis Regional y Teledetección, IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y CONICET. Buenos Aires, Argentina; E.G. JOBBÁGY, Universidad de la República (UdelaR)/ Facultad de Ciencias; S.R. VERÓN, Laboratorio de Análisis Regional y Teledetección, IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y CONICET. Buenos Aires, Argentina; G. BALDI, Laboratorio de Análisis Regional y Teledetección, IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y CONICET. Buenos Aires, Argentina; S. BAEZA, Universidad de la República (UdelaR)/ Facultad de Ciencias. |
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Título : |
Cambios en el uso de la tierra en Argentina y Uruguay: marcos conceptuales para su análisis. |
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Fecha de publicación : |
2006 |
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Fuente / Imprenta : |
Agrociencia Uruguay, 2006, 10 (2): 47-61 |
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Idioma : |
Español |
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Notas : |
Article history: Recibido: 20/03/06 Aceptado: 14/08/06. AGRADECIMIENTOS: Alice Altesor hizo importantes aportes a una versión previa del manuscrito. Este trabajo fue realizado con el
aporte de la UBA, el FONCYT, y el CONICET. |
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Contenido : |
El ser humano modifica el territorio para llevar a cabo actividades productivas o construir viviendas. Estas modificaciones producen importantes cambios en la estructura y el funcionamiento de los ecosistemas, afectando en última instancia la propia calidad de vida de las personas. En este artículo en primer término describimos algunos de los cambios ocurridos en el uso de la tierra en buena parte de Argentina y Uruguay. Utilizamos conjuntamente información aportada por estadísticas oficiales de ambos países y datos resultantes del procesamiento y clasificación de imágenes satelitales. Nuestros análisis muestran que tanto el área agrícola como forestal se han expandido en los últimos años. En Argentina, la mayor expansión la tuvieron los cultivos anuales (desde un 4% a un 14.3%, entre 1988 y 2002) y particularmente la soja, tanto en la provincia de Buenos Aires como en las provincias del Norte Argentino. En Uruguay la mayor expansión entre los censos de 1990 y 2000, estuvo dada por los cultivos forestales, los cuales llegaron a ocupar más del 35 % del área de algunas secciones censales. Luego del 2000, la expansión de la soja también afectó el litoral uruguayo, donde varias secciones censales aumentaron su área de soja a tasas cercanas al 5% anual. En segundo término, presentamos el marco conceptual a los efectos de entender los procesos que determinan estos cambios y examinar su dinámica espacial y temporal. En base a este marco conceptual es posible modelar los cambios en el uso de la tierra a partiendo de la probabilidad de transición entre usos. Los controles de estas transiciones pueden ser ambientales (por ej. tipos de suelos, clima, etc.), económicos (por ej. margen bruto, precios internacionales, etc), sociales (por ej. disponibilidad de mano de obra, tenencia de la tierra, etc.), o políticos (por ej. la ley forestal, política impositiva, líneas de créditos, etc.). Finalmente usando la idea de servicios ecosistémicos presentamos un marco conceptual para la planificación del uso de la tierra considerando sus impactos ambientales, sociales, económicos y políticos. SUMMARY: Humans modify the territory to carry out productive activities or to build dwellings . These modifications generate important changes in the structure and function of ecosystems, ultimately affecting the quality of people?s life. In this article we first describe some of the land use changes happened in a large part of Argentina and Uruguay. We used official statistics of both countries and data from satellites images. Our analyses showed that agriculture and forest plantations expanded at high rates during the last years. In Argentina, annual crops (particularly soybean) presented the fastest expansion (from 4% to 14.3%, between 1988 and 2002). In Uruguay the most important change between the agricultural censi of 1990 and 2000, was the expansion of tree plantations, which ended up occupying more than 35% of the area of some counties (secciones censales). After year 2000, soybean crops also expanded in Uruguay, where counties in Western departments experienced an increase in the cropped area higher that 5% per year-1 . Additionally, we present a conceptual framework to understand the processes that determine land use changes and to describe their spatial and temporal dynamics. Starting from this conceptual framework it is possible to model land use changes, based on the transition probability among alternative land covers. The controls of these transitions can be environmental (i.e. soil types, climate, etc.), economic (i.e. gross margin, international prices, etc), social (i.e. manpower readiness, land holding, etc.), or political (i.e. the Uruguayan and Argentinean forest laws, taxes, state credits, etc.). Finally using the concept of ecosystem services we present a conceptual framework for planning land use transitions considering environmental, social, economic and political impacts . MenosEl ser humano modifica el territorio para llevar a cabo actividades productivas o construir viviendas. Estas modificaciones producen importantes cambios en la estructura y el funcionamiento de los ecosistemas, afectando en última instancia la propia calidad de vida de las personas. En este artículo en primer término describimos algunos de los cambios ocurridos en el uso de la tierra en buena parte de Argentina y Uruguay. Utilizamos conjuntamente información aportada por estadísticas oficiales de ambos países y datos resultantes del procesamiento y clasificación de imágenes satelitales. Nuestros análisis muestran que tanto el área agrícola como forestal se han expandido en los últimos años. En Argentina, la mayor expansión la tuvieron los cultivos anuales (desde un 4% a un 14.3%, entre 1988 y 2002) y particularmente la soja, tanto en la provincia de Buenos Aires como en las provincias del Norte Argentino. En Uruguay la mayor expansión entre los censos de 1990 y 2000, estuvo dada por los cultivos forestales, los cuales llegaron a ocupar más del 35 % del área de algunas secciones censales. Luego del 2000, la expansión de la soja también afectó el litoral uruguayo, donde varias secciones censales aumentaron su área de soja a tasas cercanas al 5% anual. En segundo término, presentamos el marco conceptual a los efectos de entender los procesos que determinan estos cambios y examinar su dinámica espacial y temporal. En base a este marco conceptual es posible modelar los cambios en ... Presentar Todo |
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Palabras claves : |
DESARROLLO TERRITORIAL; FORESTACIÓN; SECTOR FORESTAL-MADERERO; URUGUAY. |
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Asunto categoría : |
K10 Producción forestal |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14630/1/Agrocienci-2006-p47-61.pdf
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Marc : |
LEADER 04896naa a2200253 a 4500
001 1019586
005 2020-09-09
008 2006 bl uuuu u00u1 u #d
100 1 $aPARUELO, J.M.
245 $aCambios en el uso de la tierra en Argentina y Uruguay$bmarcos conceptuales para su análisis.$h[electronic resource]
260 $c2006
500 $aArticle history: Recibido: 20/03/06 Aceptado: 14/08/06. AGRADECIMIENTOS: Alice Altesor hizo importantes aportes a una versión previa del manuscrito. Este trabajo fue realizado con el aporte de la UBA, el FONCYT, y el CONICET.
520 $aEl ser humano modifica el territorio para llevar a cabo actividades productivas o construir viviendas. Estas modificaciones producen importantes cambios en la estructura y el funcionamiento de los ecosistemas, afectando en última instancia la propia calidad de vida de las personas. En este artículo en primer término describimos algunos de los cambios ocurridos en el uso de la tierra en buena parte de Argentina y Uruguay. Utilizamos conjuntamente información aportada por estadísticas oficiales de ambos países y datos resultantes del procesamiento y clasificación de imágenes satelitales. Nuestros análisis muestran que tanto el área agrícola como forestal se han expandido en los últimos años. En Argentina, la mayor expansión la tuvieron los cultivos anuales (desde un 4% a un 14.3%, entre 1988 y 2002) y particularmente la soja, tanto en la provincia de Buenos Aires como en las provincias del Norte Argentino. En Uruguay la mayor expansión entre los censos de 1990 y 2000, estuvo dada por los cultivos forestales, los cuales llegaron a ocupar más del 35 % del área de algunas secciones censales. Luego del 2000, la expansión de la soja también afectó el litoral uruguayo, donde varias secciones censales aumentaron su área de soja a tasas cercanas al 5% anual. En segundo término, presentamos el marco conceptual a los efectos de entender los procesos que determinan estos cambios y examinar su dinámica espacial y temporal. En base a este marco conceptual es posible modelar los cambios en el uso de la tierra a partiendo de la probabilidad de transición entre usos. Los controles de estas transiciones pueden ser ambientales (por ej. tipos de suelos, clima, etc.), económicos (por ej. margen bruto, precios internacionales, etc), sociales (por ej. disponibilidad de mano de obra, tenencia de la tierra, etc.), o políticos (por ej. la ley forestal, política impositiva, líneas de créditos, etc.). Finalmente usando la idea de servicios ecosistémicos presentamos un marco conceptual para la planificación del uso de la tierra considerando sus impactos ambientales, sociales, económicos y políticos. SUMMARY: Humans modify the territory to carry out productive activities or to build dwellings . These modifications generate important changes in the structure and function of ecosystems, ultimately affecting the quality of people?s life. In this article we first describe some of the land use changes happened in a large part of Argentina and Uruguay. We used official statistics of both countries and data from satellites images. Our analyses showed that agriculture and forest plantations expanded at high rates during the last years. In Argentina, annual crops (particularly soybean) presented the fastest expansion (from 4% to 14.3%, between 1988 and 2002). In Uruguay the most important change between the agricultural censi of 1990 and 2000, was the expansion of tree plantations, which ended up occupying more than 35% of the area of some counties (secciones censales). After year 2000, soybean crops also expanded in Uruguay, where counties in Western departments experienced an increase in the cropped area higher that 5% per year-1 . Additionally, we present a conceptual framework to understand the processes that determine land use changes and to describe their spatial and temporal dynamics. Starting from this conceptual framework it is possible to model land use changes, based on the transition probability among alternative land covers. The controls of these transitions can be environmental (i.e. soil types, climate, etc.), economic (i.e. gross margin, international prices, etc), social (i.e. manpower readiness, land holding, etc.), or political (i.e. the Uruguayan and Argentinean forest laws, taxes, state credits, etc.). Finally using the concept of ecosystem services we present a conceptual framework for planning land use transitions considering environmental, social, economic and political impacts .
653 $aDESARROLLO TERRITORIAL
653 $aFORESTACIÓN
653 $aSECTOR FORESTAL-MADERERO
653 $aURUGUAY
700 1 $aGUERSCHMAN, J.P
700 1 $aPIÑEIRO, G.
700 1 $aJOBBÁGY, E.G.
700 1 $aVERÓN, S.R
700 1 $aBALDI, G.
700 1 $aBAEZA, S
773 $tAgrociencia Uruguay, 2006, 10 (2): 47-61
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INIA Tacuarembó (TBO) |
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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
02/10/2017 |
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Actualizado : |
05/11/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
DAMIAN, J.P.; HÖTZEL, M.J.; BANCHERO, G.; UNGELFERD, R. |
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Afiliación : |
JUAN PABLO DAMIAN, UdelaR (Universidad de la República), FVET ( Facultad de Veterinaria), Montevideo, Uruguay.; MARIA JOSÉ HÖTZEL, Laborat#1;orio de Etologia Aplicada e Bem-Estar Animal, Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Florian#1;opolis, Brazil.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RODOLFO UNGELFERD, RODOLFO UNGERFELD, UdelaR (Universidad de la República), FVET ( Facultad de Veterinaria), Montevideo, Uruguay. |
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Título : |
Competition for oestrous ewes between rams reared by their mothers or artificially reared: Effects on sexual behaviour and testosterone and cortisol serum concentrations. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Theriogenology, v.100, p. 134-138, 2017. |
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DOI : |
doi.org/10.1016/j.theriogenology.2017.06.009 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 4 November 2016//Received in revised form 5 June 2017//Accepted 6 June 2017//Available online 8 June 2017. |
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Contenido : |
A b s t r a c t:
The objective of this study was to determine how the social competition for an oestrous ewe affects the
sexual behaviour and the endocrine response in two groups of rams, one reared by their mothers and
another artificially reared. Thus, we compared the sexual behaviour and testosterone and cortisol
changes in each group of rams in competitive and non-competitive tests, both during the first and second
breeding seasons. Two groups of rams were: 1) artificially reared lambs, separated from their dams 24
e36 h after birth (Week 0) and artificially fed with sheep milk until 10 weeks of age (group AR, n ¼ 14);
and 2) lambs reared by their dams until 10 weeks of age (group DR, n ¼ 13). Rams were subjected to noncompetitive
and competitive tests for an oestrous ewe during their first and second breeding seasons,
when they were 8 and 20 months old, respectively. Sexual behaviours toward an oestrous ewe were
recorded during 20 min and the testosterone and cortisol concentrations were determined in serum
samples collected immediately before the test, and 20, 40 and 60 min after it. During the first breeding
season, the number of flehmen decreased in DR rams, and the number of flehmen and ano-genital
sniffings also decreased in DR rams, but the frequency of some copulatory behaviours increased (matings
and ejaculation/total mounts in DR rams, and total mounts in AR rams) in competitive tests. During
the second breeding season, competition caused a decrease in the number of all the recorded behaviours
(courtship and copulation) with the exception of flehmen in AR rams; however, in DR rams only the
number of the copulatory behaviours decreased under competition. Competition did not affect the
endocrine response during the first breeding season. During the second breeding season, while testosterone
concentrations were greater in non-competitive than in competitive tests at 60 min (P ¼ 0.0008)
in AR rams, in DR rams it tended to be greater (P ¼ 0.09). Competition did not affect cortisol concentrations
in any group or season, but in all tests the concentrations increased at the end of the test
(P < 0.05). In conclusion, the lack of the mother during rearing negatively affected the sexual motivation
and the testosterone response of rams to oestrous ewes in competitive tests, effects that were more
evident when adults. Neither the absence of the mother during rearing nor competition for oestrous
ewes affected the stress response (evidenced by increase in cortisol concentration) in rams during both
seasons. MenosA b s t r a c t:
The objective of this study was to determine how the social competition for an oestrous ewe affects the
sexual behaviour and the endocrine response in two groups of rams, one reared by their mothers and
another artificially reared. Thus, we compared the sexual behaviour and testosterone and cortisol
changes in each group of rams in competitive and non-competitive tests, both during the first and second
breeding seasons. Two groups of rams were: 1) artificially reared lambs, separated from their dams 24
e36 h after birth (Week 0) and artificially fed with sheep milk until 10 weeks of age (group AR, n ¼ 14);
and 2) lambs reared by their dams until 10 weeks of age (group DR, n ¼ 13). Rams were subjected to noncompetitive
and competitive tests for an oestrous ewe during their first and second breeding seasons,
when they were 8 and 20 months old, respectively. Sexual behaviours toward an oestrous ewe were
recorded during 20 min and the testosterone and cortisol concentrations were determined in serum
samples collected immediately before the test, and 20, 40 and 60 min after it. During the first breeding
season, the number of flehmen decreased in DR rams, and the number of flehmen and ano-genital
sniffings also decreased in DR rams, but the frequency of some copulatory behaviours increased (matings
and ejaculation/total mounts in DR rams, and total mounts in AR rams) in competitive tests. During
the second breeding season, competition caused a decrease in the numb... Presentar Todo |
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Palabras claves : |
CORTISOL; MOTHER-OFFSPRING; SHEEP; STRESS; TESTOSTERONE. |
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Thesagro : |
OVEJA. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03469naa a2200253 a 4500
001 1057622
005 2019-11-05
008 2017 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1016/j.theriogenology.2017.06.009$2DOI
100 1 $aDAMIAN, J.P.
245 $aCompetition for oestrous ewes between rams reared by their mothers or artificially reared$bEffects on sexual behaviour and testosterone and cortisol serum concentrations.$h[electronic resource]
260 $c2017
500 $aArticle history: Received 4 November 2016//Received in revised form 5 June 2017//Accepted 6 June 2017//Available online 8 June 2017.
520 $aA b s t r a c t: The objective of this study was to determine how the social competition for an oestrous ewe affects the sexual behaviour and the endocrine response in two groups of rams, one reared by their mothers and another artificially reared. Thus, we compared the sexual behaviour and testosterone and cortisol changes in each group of rams in competitive and non-competitive tests, both during the first and second breeding seasons. Two groups of rams were: 1) artificially reared lambs, separated from their dams 24 e36 h after birth (Week 0) and artificially fed with sheep milk until 10 weeks of age (group AR, n ¼ 14); and 2) lambs reared by their dams until 10 weeks of age (group DR, n ¼ 13). Rams were subjected to noncompetitive and competitive tests for an oestrous ewe during their first and second breeding seasons, when they were 8 and 20 months old, respectively. Sexual behaviours toward an oestrous ewe were recorded during 20 min and the testosterone and cortisol concentrations were determined in serum samples collected immediately before the test, and 20, 40 and 60 min after it. During the first breeding season, the number of flehmen decreased in DR rams, and the number of flehmen and ano-genital sniffings also decreased in DR rams, but the frequency of some copulatory behaviours increased (matings and ejaculation/total mounts in DR rams, and total mounts in AR rams) in competitive tests. During the second breeding season, competition caused a decrease in the number of all the recorded behaviours (courtship and copulation) with the exception of flehmen in AR rams; however, in DR rams only the number of the copulatory behaviours decreased under competition. Competition did not affect the endocrine response during the first breeding season. During the second breeding season, while testosterone concentrations were greater in non-competitive than in competitive tests at 60 min (P ¼ 0.0008) in AR rams, in DR rams it tended to be greater (P ¼ 0.09). Competition did not affect cortisol concentrations in any group or season, but in all tests the concentrations increased at the end of the test (P < 0.05). In conclusion, the lack of the mother during rearing negatively affected the sexual motivation and the testosterone response of rams to oestrous ewes in competitive tests, effects that were more evident when adults. Neither the absence of the mother during rearing nor competition for oestrous ewes affected the stress response (evidenced by increase in cortisol concentration) in rams during both seasons.
650 $aOVEJA
653 $aCORTISOL
653 $aMOTHER-OFFSPRING
653 $aSHEEP
653 $aSTRESS
653 $aTESTOSTERONE
700 1 $aHÖTZEL, M.J.
700 1 $aBANCHERO, G.
700 1 $aUNGELFERD, R.
773 $tTheriogenology$gv.100, p. 134-138, 2017.
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