Shrub encroachment in Mediterranean silvopastoral systems: Retama sphaerocarpa and Cistus ladanifer induce contrasting effects on pasture and Quercus ilex production
► Only during the wettest year scattered trees did not reduce pasture yield. ► The sign and magnitude of shrub encroachment effects on pasture and tree production were shrub species-specific. ► The importance of shrub encroachment competition and facilitation on pasture yield increased in the driest...
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| Veröffentlicht in: | Agriculture, ecosystems & environment ecosystems & environment, 2011-05, Vol.141 (3), p.447-454 |
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| description | ► Only during the wettest year scattered trees did not reduce pasture yield. ► The sign and magnitude of shrub encroachment effects on pasture and tree production were shrub species-specific. ► The importance of shrub encroachment competition and facilitation on pasture yield increased in the driest year.
Silvopastoral systems are threatened worldwide by progressive loss of either tree cover or herbaceous cover due to lack of tree regeneration and shrub encroachment, respectively. Grazed Mediterranean open woodlands, as Iberian dehesa, are an outstanding example of silvopastoral system where shrub encroachment has been proposed as an effective means to facilitate tree seedling recruitment and ensure the system persistence. Shrubs also may interact with pasture understorey and tree overstorey, thereby affecting the overall system productivity. We tested the effects of shrub encroachment on pasture yield, tree growth and acorn production in years of contrasting rainfall in
Quercus ilex L. dehesas of central-western Spain. We compared the effects of two prominent Mediterranean shrub species that differ in their ecological strategies: a N
2-fixing and sparse deep-rooting shrub (
Retama sphaerocarpa (L.) Boiss), and a dense shallow-rooting shrub (
Cistus ladanifer L). In intermediate and dry years, pasture yield beneath tree canopy was lower by 21–35% than in open grassland. Pasture yield beneath tree canopy was not significantly affected during the wet year.
C. ladanifer encroachment significantly reduced pasture yield by 68–98%, tree growth by 17–29%, and acorn yield by 6–44%. In contrast,
R. sphaerocarpa significantly increased pasture yield by 11–157% and tree growth by 6–13%, but had a neutral effect on acorn yield. Our results suggest that pasture is more sensitive to shrub encroachment and annual rainfall variation than is
Q. ilex. The importance of
C. ladanifer competition and
R. sphaerocarpa facilitation on pasture yield increased in the driest year. We conclude that the sign and intensity of shrub encroachment effects on pasture and tree production in Mediterranean dehesas are species-specific and depend on temporal variation as a function of climate. |
| doi_str_mv | 10.1016/j.agee.2011.04.018 |
| format | Article |
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Silvopastoral systems are threatened worldwide by progressive loss of either tree cover or herbaceous cover due to lack of tree regeneration and shrub encroachment, respectively. Grazed Mediterranean open woodlands, as Iberian dehesa, are an outstanding example of silvopastoral system where shrub encroachment has been proposed as an effective means to facilitate tree seedling recruitment and ensure the system persistence. Shrubs also may interact with pasture understorey and tree overstorey, thereby affecting the overall system productivity. We tested the effects of shrub encroachment on pasture yield, tree growth and acorn production in years of contrasting rainfall in
Quercus ilex L. dehesas of central-western Spain. We compared the effects of two prominent Mediterranean shrub species that differ in their ecological strategies: a N
2-fixing and sparse deep-rooting shrub (
Retama sphaerocarpa (L.) Boiss), and a dense shallow-rooting shrub (
Cistus ladanifer L). In intermediate and dry years, pasture yield beneath tree canopy was lower by 21–35% than in open grassland. Pasture yield beneath tree canopy was not significantly affected during the wet year.
C. ladanifer encroachment significantly reduced pasture yield by 68–98%, tree growth by 17–29%, and acorn yield by 6–44%. In contrast,
R. sphaerocarpa significantly increased pasture yield by 11–157% and tree growth by 6–13%, but had a neutral effect on acorn yield. Our results suggest that pasture is more sensitive to shrub encroachment and annual rainfall variation than is
Q. ilex. The importance of
C. ladanifer competition and
R. sphaerocarpa facilitation on pasture yield increased in the driest year. We conclude that the sign and intensity of shrub encroachment effects on pasture and tree production in Mediterranean dehesas are species-specific and depend on temporal variation as a function of climate.</description><identifier>ISSN: 0167-8809</identifier><identifier>EISSN: 1873-2305</identifier><identifier>DOI: 10.1016/j.agee.2011.04.018</identifier><identifier>CODEN: AEENDO</identifier><language>eng</language><publisher>Oxford: Elsevier B.V</publisher><subject>Acorn ; Agroforestry ; Agronomy. Soil science and plant productions ; Biological and medical sciences ; Canopies ; canopy ; Cistus ladanifer ; Climate ; Competition ; Dehesa ; Drying ; Facilitation ; Forestry ; fruits ; Fundamental and applied biological sciences. Psychology ; General agroecology ; General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping ; General agronomy. Plant production ; Generalities. Agricultural and farming systems. Agricultural development ; Grasslands ; Overstorey–understorey interactions ; overstory ; pastures ; Quercus ilex ; rain ; Recruitment ; Retama sphaerocarpa ; seedlings ; shrubs ; silvopastoral systems ; Strategy ; temporal variation ; tree growth ; Trees ; understory ; Woodlands</subject><ispartof>Agriculture, ecosystems & environment, 2011-05, Vol.141 (3), p.447-454</ispartof><rights>2011 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c419t-f97c59c51f9a900850769530861329f63517c7bad087d95a2cacf78a49d310013</citedby><cites>FETCH-LOGICAL-c419t-f97c59c51f9a900850769530861329f63517c7bad087d95a2cacf78a49d310013</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.agee.2011.04.018$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,781,785,3551,27929,27930,46000</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24299672$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Rivest, David</creatorcontrib><creatorcontrib>Rolo, Víctor</creatorcontrib><creatorcontrib>López-Díaz, Lurdes</creatorcontrib><creatorcontrib>Moreno, Gerardo</creatorcontrib><title>Shrub encroachment in Mediterranean silvopastoral systems: Retama sphaerocarpa and Cistus ladanifer induce contrasting effects on pasture and Quercus ilex production</title><title>Agriculture, ecosystems & environment</title><description>► Only during the wettest year scattered trees did not reduce pasture yield. ► The sign and magnitude of shrub encroachment effects on pasture and tree production were shrub species-specific. ► The importance of shrub encroachment competition and facilitation on pasture yield increased in the driest year.
Silvopastoral systems are threatened worldwide by progressive loss of either tree cover or herbaceous cover due to lack of tree regeneration and shrub encroachment, respectively. Grazed Mediterranean open woodlands, as Iberian dehesa, are an outstanding example of silvopastoral system where shrub encroachment has been proposed as an effective means to facilitate tree seedling recruitment and ensure the system persistence. Shrubs also may interact with pasture understorey and tree overstorey, thereby affecting the overall system productivity. We tested the effects of shrub encroachment on pasture yield, tree growth and acorn production in years of contrasting rainfall in
Quercus ilex L. dehesas of central-western Spain. We compared the effects of two prominent Mediterranean shrub species that differ in their ecological strategies: a N
2-fixing and sparse deep-rooting shrub (
Retama sphaerocarpa (L.) Boiss), and a dense shallow-rooting shrub (
Cistus ladanifer L). In intermediate and dry years, pasture yield beneath tree canopy was lower by 21–35% than in open grassland. Pasture yield beneath tree canopy was not significantly affected during the wet year.
C. ladanifer encroachment significantly reduced pasture yield by 68–98%, tree growth by 17–29%, and acorn yield by 6–44%. In contrast,
R. sphaerocarpa significantly increased pasture yield by 11–157% and tree growth by 6–13%, but had a neutral effect on acorn yield. Our results suggest that pasture is more sensitive to shrub encroachment and annual rainfall variation than is
Q. ilex. The importance of
C. ladanifer competition and
R. sphaerocarpa facilitation on pasture yield increased in the driest year. We conclude that the sign and intensity of shrub encroachment effects on pasture and tree production in Mediterranean dehesas are species-specific and depend on temporal variation as a function of climate.</description><subject>Acorn</subject><subject>Agroforestry</subject><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Canopies</subject><subject>canopy</subject><subject>Cistus ladanifer</subject><subject>Climate</subject><subject>Competition</subject><subject>Dehesa</subject><subject>Drying</subject><subject>Facilitation</subject><subject>Forestry</subject><subject>fruits</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agroecology</subject><subject>General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping</subject><subject>General agronomy. Plant production</subject><subject>Generalities. Agricultural and farming systems. Agricultural development</subject><subject>Grasslands</subject><subject>Overstorey–understorey interactions</subject><subject>overstory</subject><subject>pastures</subject><subject>Quercus ilex</subject><subject>rain</subject><subject>Recruitment</subject><subject>Retama sphaerocarpa</subject><subject>seedlings</subject><subject>shrubs</subject><subject>silvopastoral systems</subject><subject>Strategy</subject><subject>temporal variation</subject><subject>tree growth</subject><subject>Trees</subject><subject>understory</subject><subject>Woodlands</subject><issn>0167-8809</issn><issn>1873-2305</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kctuFDEQRVsIJIbAD7DBGwSbbux-2UZs0IiXFIQgZG1V3OWMRz12Y7sj8kH8JzVMxDLeeHPutatOVT0XvBFcjG_2DVwjNi0XouF9w4V6UG2Ekl3ddnx4WG0IkrVSXD-unuS853TaTm2qPxe7tF4xDDZFsLsDhsJ8YF9x8gVTgoAQWPbzTVwgl5hgZvk2Fzzkt-wHFjgAy8sOMEULaQEGYWJbn8ua2QwTBO8wUeG0WmQ2hpKoxYdrhs6hLZnFwI7Fa8J_0e8rJktZP-NvtqRIueJjeFo9cjBnfHZ3n1WXHz_83H6uz799-rJ9f17bXuhSOy3toO0gnAbNuRq4HPXQcTWKrtVu7AYhrbyCiSs56QFaC9ZJBb2eOsG56M6qV6deevrXirmYg88W55n2ENdslFKCD7wdiHx9LymklKLXnZSEtieUVpxzQmeW5A-Qbo3g5mjP7M3RnjnaM7w3ZI9CL-_6IVuYHZmwPv9Ptn2r9Shb4l6cOAeRWhIxlxdU1NM4I--HkYh3JwJpcTcek8nWk28ynEiBmaK_7yN_AT3dvG4</recordid><startdate>20110501</startdate><enddate>20110501</enddate><creator>Rivest, David</creator><creator>Rolo, Víctor</creator><creator>López-Díaz, Lurdes</creator><creator>Moreno, Gerardo</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SU</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>7SN</scope><scope>7ST</scope><scope>SOI</scope></search><sort><creationdate>20110501</creationdate><title>Shrub encroachment in Mediterranean silvopastoral systems: Retama sphaerocarpa and Cistus ladanifer induce contrasting effects on pasture and Quercus ilex production</title><author>Rivest, David ; Rolo, Víctor ; López-Díaz, Lurdes ; Moreno, Gerardo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c419t-f97c59c51f9a900850769530861329f63517c7bad087d95a2cacf78a49d310013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Acorn</topic><topic>Agroforestry</topic><topic>Agronomy. Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>Canopies</topic><topic>canopy</topic><topic>Cistus ladanifer</topic><topic>Climate</topic><topic>Competition</topic><topic>Dehesa</topic><topic>Drying</topic><topic>Facilitation</topic><topic>Forestry</topic><topic>fruits</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agroecology</topic><topic>General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping</topic><topic>General agronomy. Plant production</topic><topic>Generalities. Agricultural and farming systems. Agricultural development</topic><topic>Grasslands</topic><topic>Overstorey–understorey interactions</topic><topic>overstory</topic><topic>pastures</topic><topic>Quercus ilex</topic><topic>rain</topic><topic>Recruitment</topic><topic>Retama sphaerocarpa</topic><topic>seedlings</topic><topic>shrubs</topic><topic>silvopastoral systems</topic><topic>Strategy</topic><topic>temporal variation</topic><topic>tree growth</topic><topic>Trees</topic><topic>understory</topic><topic>Woodlands</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rivest, David</creatorcontrib><creatorcontrib>Rolo, Víctor</creatorcontrib><creatorcontrib>López-Díaz, Lurdes</creatorcontrib><creatorcontrib>Moreno, Gerardo</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Ecology Abstracts</collection><collection>Environment Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Agriculture, ecosystems & environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rivest, David</au><au>Rolo, Víctor</au><au>López-Díaz, Lurdes</au><au>Moreno, Gerardo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Shrub encroachment in Mediterranean silvopastoral systems: Retama sphaerocarpa and Cistus ladanifer induce contrasting effects on pasture and Quercus ilex production</atitle><jtitle>Agriculture, ecosystems & environment</jtitle><date>2011-05-01</date><risdate>2011</risdate><volume>141</volume><issue>3</issue><spage>447</spage><epage>454</epage><pages>447-454</pages><issn>0167-8809</issn><eissn>1873-2305</eissn><coden>AEENDO</coden><abstract>► Only during the wettest year scattered trees did not reduce pasture yield. ► The sign and magnitude of shrub encroachment effects on pasture and tree production were shrub species-specific. ► The importance of shrub encroachment competition and facilitation on pasture yield increased in the driest year.
Silvopastoral systems are threatened worldwide by progressive loss of either tree cover or herbaceous cover due to lack of tree regeneration and shrub encroachment, respectively. Grazed Mediterranean open woodlands, as Iberian dehesa, are an outstanding example of silvopastoral system where shrub encroachment has been proposed as an effective means to facilitate tree seedling recruitment and ensure the system persistence. Shrubs also may interact with pasture understorey and tree overstorey, thereby affecting the overall system productivity. We tested the effects of shrub encroachment on pasture yield, tree growth and acorn production in years of contrasting rainfall in
Quercus ilex L. dehesas of central-western Spain. We compared the effects of two prominent Mediterranean shrub species that differ in their ecological strategies: a N
2-fixing and sparse deep-rooting shrub (
Retama sphaerocarpa (L.) Boiss), and a dense shallow-rooting shrub (
Cistus ladanifer L). In intermediate and dry years, pasture yield beneath tree canopy was lower by 21–35% than in open grassland. Pasture yield beneath tree canopy was not significantly affected during the wet year.
C. ladanifer encroachment significantly reduced pasture yield by 68–98%, tree growth by 17–29%, and acorn yield by 6–44%. In contrast,
R. sphaerocarpa significantly increased pasture yield by 11–157% and tree growth by 6–13%, but had a neutral effect on acorn yield. Our results suggest that pasture is more sensitive to shrub encroachment and annual rainfall variation than is
Q. ilex. The importance of
C. ladanifer competition and
R. sphaerocarpa facilitation on pasture yield increased in the driest year. We conclude that the sign and intensity of shrub encroachment effects on pasture and tree production in Mediterranean dehesas are species-specific and depend on temporal variation as a function of climate.</abstract><cop>Oxford</cop><pub>Elsevier B.V</pub><doi>10.1016/j.agee.2011.04.018</doi><tpages>8</tpages></addata></record> |
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| ispartof | Agriculture, ecosystems & environment, 2011-05, Vol.141 (3), p.447-454 |
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| subjects | Acorn Agroforestry Agronomy. Soil science and plant productions Biological and medical sciences Canopies canopy Cistus ladanifer Climate Competition Dehesa Drying Facilitation Forestry fruits Fundamental and applied biological sciences. Psychology General agroecology General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping General agronomy. Plant production Generalities. Agricultural and farming systems. Agricultural development Grasslands Overstorey–understorey interactions overstory pastures Quercus ilex rain Recruitment Retama sphaerocarpa seedlings shrubs silvopastoral systems Strategy temporal variation tree growth Trees understory Woodlands |
| title | Shrub encroachment in Mediterranean silvopastoral systems: Retama sphaerocarpa and Cistus ladanifer induce contrasting effects on pasture and Quercus ilex production |
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