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Vegetation response to rainfall pulses in the Sonoran Desert as modelled through remotely sensed imageries
ABSTRACT In northwestern Mexico in an annual cycle comprised months 2008–2009, we estimated the effects of cumulative rainfall and previous vegetation status on current vegetative greenness adjusted for soil reflectance [via the Transformed Soil Adjusted Vegetation Index (TSAVI)] and canopy water co...
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Published in: | International journal of climatology 2014-12, Vol.34 (15), p.3967-3976 |
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container_title | International journal of climatology |
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creator | Rodríguez‐Moreno, Victor M. Bullock, Stephen H. |
description | ABSTRACT
In northwestern Mexico in an annual cycle comprised months 2008–2009, we estimated the effects of cumulative rainfall and previous vegetation status on current vegetative greenness adjusted for soil reflectance [via the Transformed Soil Adjusted Vegetation Index (TSAVI)] and canopy water content [via the Normalized Difference Infrared Index (NDII)]. Sample kernels (540 of |
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In northwestern Mexico in an annual cycle comprised months 2008–2009, we estimated the effects of cumulative rainfall and previous vegetation status on current vegetative greenness adjusted for soil reflectance [via the Transformed Soil Adjusted Vegetation Index (TSAVI)] and canopy water content [via the Normalized Difference Infrared Index (NDII)]. Sample kernels (540 of <0.4 ha) were stratified in nine areas by latitude, distance to the Pacific Ocean and slope across a 15 000 km2 area on the Baja California peninsula. Rainfall data were accumulated over 2‐, 4‐ and 6‐week periods from daily satellite estimates [via the Tropical Rainfall Measuring Mission (TRMM)]. TSAVI and NDII were calculated from Landsat 5 TM images. When restricted by season, multiple regressions results were 0.59 < radj2 < 0.96 for TSAVI and 0.45 < r2adj < 0.85 for NDII. Rainfall alone accounted for up to an exceptional 70% of the variance in vegetation indices, while the most widely significant factors were the previous vegetation status and its interaction with precipitation. For TSAVI, direct dependence on precipitation was generally much greater for the 4‐ and 6‐week accumulation than for the 2‐week periods. However, none of the factors was universally significant for either vegetation index. Results also showed the importance of scale in the spatial heterogeneity of climate and topography in this arid landscape.</description><identifier>ISSN: 0899-8418</identifier><identifier>EISSN: 1097-0088</identifier><identifier>DOI: 10.1002/joc.3955</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Ltd</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; Biological and medical sciences ; Climatology. Bioclimatology. Climate change ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Fundamental and applied biological sciences. Psychology ; geographic template ; Meteorology ; NDII ; phenology ; Precipitation ; precipitation effects ; slope effects ; Synecology ; Terrestrial ecosystems ; TRMM ; TSAVI ; Vegetation</subject><ispartof>International journal of climatology, 2014-12, Vol.34 (15), p.3967-3976</ispartof><rights>2014 Royal Meteorological Society</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4275-a57da8eacd31b4be94417bd4b7ec8a6a419c5166f93e97f46b2a54ac54f6583b3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27898,27899</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=29004119$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Rodríguez‐Moreno, Victor M.</creatorcontrib><creatorcontrib>Bullock, Stephen H.</creatorcontrib><title>Vegetation response to rainfall pulses in the Sonoran Desert as modelled through remotely sensed imageries</title><title>International journal of climatology</title><description>ABSTRACT
In northwestern Mexico in an annual cycle comprised months 2008–2009, we estimated the effects of cumulative rainfall and previous vegetation status on current vegetative greenness adjusted for soil reflectance [via the Transformed Soil Adjusted Vegetation Index (TSAVI)] and canopy water content [via the Normalized Difference Infrared Index (NDII)]. Sample kernels (540 of <0.4 ha) were stratified in nine areas by latitude, distance to the Pacific Ocean and slope across a 15 000 km2 area on the Baja California peninsula. Rainfall data were accumulated over 2‐, 4‐ and 6‐week periods from daily satellite estimates [via the Tropical Rainfall Measuring Mission (TRMM)]. TSAVI and NDII were calculated from Landsat 5 TM images. When restricted by season, multiple regressions results were 0.59 < radj2 < 0.96 for TSAVI and 0.45 < r2adj < 0.85 for NDII. Rainfall alone accounted for up to an exceptional 70% of the variance in vegetation indices, while the most widely significant factors were the previous vegetation status and its interaction with precipitation. For TSAVI, direct dependence on precipitation was generally much greater for the 4‐ and 6‐week accumulation than for the 2‐week periods. However, none of the factors was universally significant for either vegetation index. Results also showed the importance of scale in the spatial heterogeneity of climate and topography in this arid landscape.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Biological and medical sciences</subject><subject>Climatology. Bioclimatology. Climate change</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>geographic template</subject><subject>Meteorology</subject><subject>NDII</subject><subject>phenology</subject><subject>Precipitation</subject><subject>precipitation effects</subject><subject>slope effects</subject><subject>Synecology</subject><subject>Terrestrial ecosystems</subject><subject>TRMM</subject><subject>TSAVI</subject><subject>Vegetation</subject><issn>0899-8418</issn><issn>1097-0088</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpdkUtLxDAYRYMoOI6CPyEggpuOSfNospTxzcAsfGxLmn6daWmbMWmR-femOLhwdRf3cPgeCF1SsqCEpLeNswumhThCM0p0lhCi1DGaEaV1ojhVp-gshIYQojWVM9R8wgYGM9Suxx7CzvUB8OCwN3VfmbbFu7ENEHDd42EL-M31zpse30MAP2ATcOdKaFsoY-3duNlGS-cGaPc4QHSVuO7MBnwN4RydRGOAi0PO0cfjw_vyOVmtn16Wd6vE8jQTiRFZaRQYWzJa8AI05zQrSl5kYJWRhlNtBZWy0gx0VnFZpEZwYwWvpFCsYHN08-vdefc1Qhjyrg42Dml6cGPIqeSppIwSFdGrf2jjRt_H6SKVapVJJifq-kCZYE1bxQPYOuQ7H1fz-zzVhHBKdeSSX-67bmH_11OST5-JaptPn8lf18sp2Q9T3IOB</recordid><startdate>201412</startdate><enddate>201412</enddate><creator>Rodríguez‐Moreno, Victor M.</creator><creator>Bullock, Stephen H.</creator><general>John Wiley & Sons, Ltd</general><general>Wiley</general><general>Wiley Subscription Services, Inc</general><scope>IQODW</scope><scope>7TG</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope><scope>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>201412</creationdate><title>Vegetation response to rainfall pulses in the Sonoran Desert as modelled through remotely sensed imageries</title><author>Rodríguez‐Moreno, Victor M. ; Bullock, Stephen H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4275-a57da8eacd31b4be94417bd4b7ec8a6a419c5166f93e97f46b2a54ac54f6583b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Biological and medical sciences</topic><topic>Climatology. Bioclimatology. Climate change</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>geographic template</topic><topic>Meteorology</topic><topic>NDII</topic><topic>phenology</topic><topic>Precipitation</topic><topic>precipitation effects</topic><topic>slope effects</topic><topic>Synecology</topic><topic>Terrestrial ecosystems</topic><topic>TRMM</topic><topic>TSAVI</topic><topic>Vegetation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rodríguez‐Moreno, Victor M.</creatorcontrib><creatorcontrib>Bullock, Stephen H.</creatorcontrib><collection>Pascal-Francis</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>International journal of climatology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rodríguez‐Moreno, Victor M.</au><au>Bullock, Stephen H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Vegetation response to rainfall pulses in the Sonoran Desert as modelled through remotely sensed imageries</atitle><jtitle>International journal of climatology</jtitle><date>2014-12</date><risdate>2014</risdate><volume>34</volume><issue>15</issue><spage>3967</spage><epage>3976</epage><pages>3967-3976</pages><issn>0899-8418</issn><eissn>1097-0088</eissn><abstract>ABSTRACT
In northwestern Mexico in an annual cycle comprised months 2008–2009, we estimated the effects of cumulative rainfall and previous vegetation status on current vegetative greenness adjusted for soil reflectance [via the Transformed Soil Adjusted Vegetation Index (TSAVI)] and canopy water content [via the Normalized Difference Infrared Index (NDII)]. Sample kernels (540 of <0.4 ha) were stratified in nine areas by latitude, distance to the Pacific Ocean and slope across a 15 000 km2 area on the Baja California peninsula. Rainfall data were accumulated over 2‐, 4‐ and 6‐week periods from daily satellite estimates [via the Tropical Rainfall Measuring Mission (TRMM)]. TSAVI and NDII were calculated from Landsat 5 TM images. When restricted by season, multiple regressions results were 0.59 < radj2 < 0.96 for TSAVI and 0.45 < r2adj < 0.85 for NDII. Rainfall alone accounted for up to an exceptional 70% of the variance in vegetation indices, while the most widely significant factors were the previous vegetation status and its interaction with precipitation. For TSAVI, direct dependence on precipitation was generally much greater for the 4‐ and 6‐week accumulation than for the 2‐week periods. However, none of the factors was universally significant for either vegetation index. Results also showed the importance of scale in the spatial heterogeneity of climate and topography in this arid landscape.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Ltd</pub><doi>10.1002/joc.3955</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Animal and plant ecology Animal, plant and microbial ecology Biological and medical sciences Climatology. Bioclimatology. Climate change Earth, ocean, space Exact sciences and technology External geophysics Fundamental and applied biological sciences. Psychology geographic template Meteorology NDII phenology Precipitation precipitation effects slope effects Synecology Terrestrial ecosystems TRMM TSAVI Vegetation |
title | Vegetation response to rainfall pulses in the Sonoran Desert as modelled through remotely sensed imageries |
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