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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
17/03/2020 |
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Actualizado : |
17/03/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
BAEZA, S.; PARUELO, J. |
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Afiliación : |
SANTIAGO BAEZA, Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay; JOSÉ PARUELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Facultad de Ciencias, Universidad de la República, Mdeo, Uruguay; Depto. Métodos Cuantitativos y Sistemas de Información, Facultad de Agronomía and IFEVA, UBA and CONICET, Bs.As., Argentina. |
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Título : |
Land use/land cover change (2000-2014) in the Rio de la Plata grasslands: An analysis based on MODIS NDVI time series. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Remote Sensing, 1 February 2020, Volume 12, Issue 3, Article number 381. OPEN ACCESS. Doi: https://doi.org/10.3390/rs12030381 |
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ISSN : |
2072-4292 |
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DOI : |
10.3390/rs12030381 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 13 November 2019 / Revised: 10 January 2020 / Accepted: 15 January 2020 / Published: 24 January 2020.
Corresponding author: Baeza, S.; Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Garzón 780, Montevideo, Uruguay; email:sbaeza@fagro.edu.uy
Funding text: This research was supported on doctoral fellowships for ANII and CAP UdelaR, Uruguay (Baeza); by a grant from the Inter-American Institute for Global Change Research (IAI) CRN3095 which is supported by the US National Science Foundation (Grant GEO-1128040); by FONCYT, CONICET and UBACYT (Argentina) and by ANII INNOVAGRO projects FSA_PI_2018_1_149022 and FSA_PI_2018_1_148811. The authors would like to thank Priscilla Pinto, Pablo Baldassini and Camilo Bagnato for their help with the C5 software. We thank Rocksy Zhang and three anonymous reviewers for their support and comments. |
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Contenido : |
ABSTRACT.
Latin America in general and the Rio de la Plata Grasslands (RPG) in particular, are one of the regions in the world with the highest rates of change in land use/land cover (LULC) in recent times. Despite the magnitude of this change process, LULC descriptions in the RPG are far from being complete, even more those that evaluate LULC change through time. In this work we described LULC and its changes over time for the first 14 years of the 21st century and for the entire grassland biome of the Rio de la Plata, one of the most extensive grassland regions in the world. We performed simple but exhaustive classifications at regional level based on vegetation phenology, using extensive LULC field database, time series of MODIS NDVI satellite images and decision trees classifiers, generating an annual map for all RPG. The used technique achieved very good levels of accuracy at the regional (94.3%-95.5%) and sub-regional (78.2%-97.6%) scales, with commission and omission errors generally low (Min = 0.6, Max = 10.3, Median = 5.7, and Min = 0, Max = 41.8, Median = 6.8 for regional and sub regional classification respectively) and evenly distributed, but fails when LULC classifications are generated in years when the climate is very different from those used to generate spectral signatures and train decision trees, or when the NDVI time series accumulates large volumes of lost data. Our results show that the RPG are immersed in a strong process of land use change, mainly due to the advance of the agricultural frontier and at the expense of loss of grassland areas. The agricultural area increased 23% in the analyzed period, adding over than 50,000 Km2 of new crops. Most agricultural expansion, and therefore the greatest losses of grassland, concentrates on both sides of Uruguay river (Mesopotamic Pampa and the western portion of Southern and Northern Campos) and the western portion of Inland Pampa. The generated maps open the door for more detailed and spatially explicit modeling of many important aspects of ecosystem functioning, for quantification in the provision of ecosystem services and for more efficient management of natural resources. © 2020 by the authors. MenosABSTRACT.
Latin America in general and the Rio de la Plata Grasslands (RPG) in particular, are one of the regions in the world with the highest rates of change in land use/land cover (LULC) in recent times. Despite the magnitude of this change process, LULC descriptions in the RPG are far from being complete, even more those that evaluate LULC change through time. In this work we described LULC and its changes over time for the first 14 years of the 21st century and for the entire grassland biome of the Rio de la Plata, one of the most extensive grassland regions in the world. We performed simple but exhaustive classifications at regional level based on vegetation phenology, using extensive LULC field database, time series of MODIS NDVI satellite images and decision trees classifiers, generating an annual map for all RPG. The used technique achieved very good levels of accuracy at the regional (94.3%-95.5%) and sub-regional (78.2%-97.6%) scales, with commission and omission errors generally low (Min = 0.6, Max = 10.3, Median = 5.7, and Min = 0, Max = 41.8, Median = 6.8 for regional and sub regional classification respectively) and evenly distributed, but fails when LULC classifications are generated in years when the climate is very different from those used to generate spectral signatures and train decision trees, or when the NDVI time series accumulates large volumes of lost data. Our results show that the RPG are immersed in a strong process of land use change, mainly due... Presentar Todo |
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Palabras claves : |
Grassland losses; MODIS NDVI; Phenological classifications; Rio de la Plata grassslands. |
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Asunto categoría : |
A50 Investigación agraria |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14312/1/remotesensing-12-00381-v2.pdf
https://www.mdpi.com/2072-4292/12/3/381/pdf
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Marc : |
LEADER 03860naa a2200217 a 4500
001 1060927
005 2020-03-17
008 2020 bl uuuu u00u1 u #d
022 $a2072-4292
024 7 $a10.3390/rs12030381$2DOI
100 1 $aBAEZA, S.
245 $aLand use/land cover change (2000-2014) in the Rio de la Plata grasslands$bAn analysis based on MODIS NDVI time series.$h[electronic resource]
260 $c2020
500 $aArticle history: Received: 13 November 2019 / Revised: 10 January 2020 / Accepted: 15 January 2020 / Published: 24 January 2020. Corresponding author: Baeza, S.; Departamento de Sistemas Ambientales, Facultad de Agronomía, Universidad de la República, Garzón 780, Montevideo, Uruguay; email:sbaeza@fagro.edu.uy Funding text: This research was supported on doctoral fellowships for ANII and CAP UdelaR, Uruguay (Baeza); by a grant from the Inter-American Institute for Global Change Research (IAI) CRN3095 which is supported by the US National Science Foundation (Grant GEO-1128040); by FONCYT, CONICET and UBACYT (Argentina) and by ANII INNOVAGRO projects FSA_PI_2018_1_149022 and FSA_PI_2018_1_148811. The authors would like to thank Priscilla Pinto, Pablo Baldassini and Camilo Bagnato for their help with the C5 software. We thank Rocksy Zhang and three anonymous reviewers for their support and comments.
520 $aABSTRACT. Latin America in general and the Rio de la Plata Grasslands (RPG) in particular, are one of the regions in the world with the highest rates of change in land use/land cover (LULC) in recent times. Despite the magnitude of this change process, LULC descriptions in the RPG are far from being complete, even more those that evaluate LULC change through time. In this work we described LULC and its changes over time for the first 14 years of the 21st century and for the entire grassland biome of the Rio de la Plata, one of the most extensive grassland regions in the world. We performed simple but exhaustive classifications at regional level based on vegetation phenology, using extensive LULC field database, time series of MODIS NDVI satellite images and decision trees classifiers, generating an annual map for all RPG. The used technique achieved very good levels of accuracy at the regional (94.3%-95.5%) and sub-regional (78.2%-97.6%) scales, with commission and omission errors generally low (Min = 0.6, Max = 10.3, Median = 5.7, and Min = 0, Max = 41.8, Median = 6.8 for regional and sub regional classification respectively) and evenly distributed, but fails when LULC classifications are generated in years when the climate is very different from those used to generate spectral signatures and train decision trees, or when the NDVI time series accumulates large volumes of lost data. Our results show that the RPG are immersed in a strong process of land use change, mainly due to the advance of the agricultural frontier and at the expense of loss of grassland areas. The agricultural area increased 23% in the analyzed period, adding over than 50,000 Km2 of new crops. Most agricultural expansion, and therefore the greatest losses of grassland, concentrates on both sides of Uruguay river (Mesopotamic Pampa and the western portion of Southern and Northern Campos) and the western portion of Inland Pampa. The generated maps open the door for more detailed and spatially explicit modeling of many important aspects of ecosystem functioning, for quantification in the provision of ecosystem services and for more efficient management of natural resources. © 2020 by the authors.
653 $aGrassland losses
653 $aMODIS NDVI
653 $aPhenological classifications
653 $aRio de la Plata grassslands
700 1 $aPARUELO, J.
773 $tRemote Sensing, 1 February 2020, Volume 12, Issue 3, Article number 381. OPEN ACCESS. Doi: https://doi.org/10.3390/rs12030381
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INIA Las Brujas (LB) |
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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 : |
ARAÚJO, V.O.DE; OLIVEIRA NETO, T.S; SIMOES, S.V.D; FERREIRA DA SILVA, T.K.; RIET-CORREA, F.; LUCENA , R.B. |
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Afiliación : |
VALBER ONOFRE DE ARAÚJO, Postgraduate Program in Animal Science, Universidade Federal da Paraíba, Areia, Paraíba, 58397-000, Brazil.; TEMÍSTOCLES SOARES OLIVEIRA NETO, Veterinary Hospital, Universidade Federal da Paraíba, Areia, Paraíba, 58397-000, Brazil.; SARA VILAR DANTAS SIMOES, Veterinary Hospital, Universidade Federal da Paraíba, Areia, Paraíba, 58397-000, Brazil.; THATYANA KELLY FERREIRA DA SILVA, Veterinary Hospital, Universidade Federal da Paraíba, Areia, Paraíba, 58397-000, Brazil.; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Postgraduate Program in Animal Science, Universidade Federal da Paraíba, Areia, Paraíba, 58397-000, Brazil.; RICARDO BARBOSA LUCENA, Postgraduate Program in Animal Science, Universidade Federal da Paraíba, Areia, Paraíba, 58397-000, Brazil. |
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Título : |
Primary photosensitization and contact dermatitis caused by Malachra fasciata Jacq. N.V. (Malvaceae) in sheep. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Toxicon, 2017 Nov, volumen 138, p.184-187. |
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DOI : |
10.1016/j.toxicon.2017.09.009 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 20 July 2017.//Received in revised form 11 September 2017.//Accepted 11 September 2017 //Available online 14 September 2017 |
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Contenido : |
Abstract:
Farmers from Paraiba state, Northeast Brazil, claim that Malachra fasciata causes cutaneous lesions in sheep. To test its toxicity the plant was harvested daily and fed ad libitum for 21 days to 3 sheep as the sole food source (# 1?3). An additional sheep (# 4) was maintained as a control. Cutaneous lesions of photosensitization initiated after 7 days and increased continuously over the next 21 days. The dose ingested varied between 129 g/kg to 175 g/kg. Alopecia, hyperemia and crusting were observed in the animals. On day 22, sheep 3 was euthanized. At necropsy, no gross or microscopic alterations were observed in the liver. Skin biopsies were performed in the remaining animals Histopathology of skin of the three sheep included acanthosis, orthokeratosis, and multifocal infiltration by lymphocytes, eosinophils and plasma cells around blood vessels and appendages in the dermis. The Splendore-Hoeppli phenomenon was observed in the dermis of sheep 2, due probably by contact dermatitis. After the end of administration Sheep 1 and 2 were protected from sunlight and the lesions regressed within two weeks. This experiment indicates that M. fasciata causes primary photosensitization and contact dermatitis in sheep. |
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Palabras claves : |
DERMATITIS; ENVENENAMIENTO; LESIONES DE LA PIEL; PLATAFORMA SALUD ANIMAL; POISONING PLANT; SALUD ANIMAL; SKIN. |
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Thesagro : |
PLANTAS TOXICAS. |
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Asunto categoría : |
L74 Trastornos misceláneos de los animales |
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Marc : |
LEADER 02270naa a2200301 a 4500
001 1057621
005 2019-11-05
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1016/j.toxicon.2017.09.009$2DOI
100 1 $aARAÚJO, V.O.DE
245 $aPrimary photosensitization and contact dermatitis caused by Malachra fasciata Jacq. N.V. (Malvaceae) in sheep.$h[electronic resource]
260 $c2017
500 $aArticle history: Received 20 July 2017.//Received in revised form 11 September 2017.//Accepted 11 September 2017 //Available online 14 September 2017
520 $aAbstract: Farmers from Paraiba state, Northeast Brazil, claim that Malachra fasciata causes cutaneous lesions in sheep. To test its toxicity the plant was harvested daily and fed ad libitum for 21 days to 3 sheep as the sole food source (# 1?3). An additional sheep (# 4) was maintained as a control. Cutaneous lesions of photosensitization initiated after 7 days and increased continuously over the next 21 days. The dose ingested varied between 129 g/kg to 175 g/kg. Alopecia, hyperemia and crusting were observed in the animals. On day 22, sheep 3 was euthanized. At necropsy, no gross or microscopic alterations were observed in the liver. Skin biopsies were performed in the remaining animals Histopathology of skin of the three sheep included acanthosis, orthokeratosis, and multifocal infiltration by lymphocytes, eosinophils and plasma cells around blood vessels and appendages in the dermis. The Splendore-Hoeppli phenomenon was observed in the dermis of sheep 2, due probably by contact dermatitis. After the end of administration Sheep 1 and 2 were protected from sunlight and the lesions regressed within two weeks. This experiment indicates that M. fasciata causes primary photosensitization and contact dermatitis in sheep.
650 $aPLANTAS TOXICAS
653 $aDERMATITIS
653 $aENVENENAMIENTO
653 $aLESIONES DE LA PIEL
653 $aPLATAFORMA SALUD ANIMAL
653 $aPOISONING PLANT
653 $aSALUD ANIMAL
653 $aSKIN
700 1 $aOLIVEIRA NETO, T.S
700 1 $aSIMOES, S.V.D
700 1 $aFERREIRA DA SILVA, T.K.
700 1 $aRIET-CORREA, F.
700 1 $aLUCENA , R.B.
773 $tToxicon, 2017 Nov, volumen 138, p.184-187.
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