Leaf growth pattern in evergreen and deciduous species of the Central Himalaya, India
Leaf growth patterns were investigated in 11 evergreen (with leaf life-spans of just more than 1 year) and 15 deciduous species, occurring along an elevational gradient of 600-2200 m elevation in the Central Himalaya. Records were made of the leaf initiation period, leaf population dynamics, leaf ex...
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Veröffentlicht in: | International journal of biometeorology 1992-12, Vol.36 (4), p.233-242 |
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description | Leaf growth patterns were investigated in 11 evergreen (with leaf life-spans of just more than 1 year) and 15 deciduous species, occurring along an elevational gradient of 600-2200 m elevation in the Central Himalaya. Records were made of the leaf initiation period, leaf population dynamics, leaf expansion, leaf mass changes, leaf longevity and related parameters. Species of both groups produced leaves at similar rates during March to April. the driest period of the year. Species of both groups had approximately fully developed foliage during the warm, wet period (mid-June to mid-September) of the monsoon. However, significant differences were found at group level in other characters: shoot length (19.5 cm per shoot for deciduous and 11.7 cm for evergreen species); leaf population per 10 cm shoot length (4.7 vs 15.0); leaf area (107.9 vs 41.4 cm2/leaf); specific leaf mass (106.9 vs 191.3 g/m2); and leaf mass loss after the monsoon period, being rapid and higher (31.6%) in deciduous species and slow and limited in the evergreens (26.2%). However, species of the two groups showed considerable overlaps in the values of above characters. The evergreen species of the Central Himalaya resembled the deciduous species of the region more than the multi-year leaves of clearly evergreen species. The evergreens bear leaves throughout the year, but like deciduous species bear the cost of annual replacement of old leaves by new leaves. They seem to outcompete deciduous species by producing annually a greater mass of leaves of low-carbon cost per unit leaf mass), which is capable of conducting photosynthesis all year round. A situation of less marked contrast between favourable and nonfavourable periods, with respect to temperature, seems to favour the leaf characters of the evergreens. |
doi_str_mv | 10.1007/bf02726404 |
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Records were made of the leaf initiation period, leaf population dynamics, leaf expansion, leaf mass changes, leaf longevity and related parameters. Species of both groups produced leaves at similar rates during March to April. the driest period of the year. Species of both groups had approximately fully developed foliage during the warm, wet period (mid-June to mid-September) of the monsoon. However, significant differences were found at group level in other characters: shoot length (19.5 cm per shoot for deciduous and 11.7 cm for evergreen species); leaf population per 10 cm shoot length (4.7 vs 15.0); leaf area (107.9 vs 41.4 cm2/leaf); specific leaf mass (106.9 vs 191.3 g/m2); and leaf mass loss after the monsoon period, being rapid and higher (31.6%) in deciduous species and slow and limited in the evergreens (26.2%). However, species of the two groups showed considerable overlaps in the values of above characters. The evergreen species of the Central Himalaya resembled the deciduous species of the region more than the multi-year leaves of clearly evergreen species. The evergreens bear leaves throughout the year, but like deciduous species bear the cost of annual replacement of old leaves by new leaves. They seem to outcompete deciduous species by producing annually a greater mass of leaves of low-carbon cost per unit leaf mass), which is capable of conducting photosynthesis all year round. A situation of less marked contrast between favourable and nonfavourable periods, with respect to temperature, seems to favour the leaf characters of the evergreens.</description><identifier>ISSN: 0020-7128</identifier><identifier>EISSN: 1432-1254</identifier><identifier>DOI: 10.1007/bf02726404</identifier><identifier>CODEN: IJBMAO</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>air temperature ; Animal and plant ecology ; Animal, plant and microbial ecology ; Autoecology ; Biological and medical sciences ; forests ; Fundamental and applied biological sciences. Psychology ; growth rate ; leaf expansion ; leaves ; longevity ; mass ; Plants and fungi ; population dynamics ; rain ; seasonal variation ; shoots ; soil water</subject><ispartof>International journal of biometeorology, 1992-12, Vol.36 (4), p.233-242</ispartof><rights>1993 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-d89fd7877b39cf532993a934addab6ffbddbb69534d6061c8d4b3e5847f765363</citedby><cites>FETCH-LOGICAL-c381t-d89fd7877b39cf532993a934addab6ffbddbb69534d6061c8d4b3e5847f765363</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,776,780,785,786,23909,23910,25118,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4630548$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Negi, G.C.S</creatorcontrib><creatorcontrib>Singh, S.P</creatorcontrib><title>Leaf growth pattern in evergreen and deciduous species of the Central Himalaya, India</title><title>International journal of biometeorology</title><description>Leaf growth patterns were investigated in 11 evergreen (with leaf life-spans of just more than 1 year) and 15 deciduous species, occurring along an elevational gradient of 600-2200 m elevation in the Central Himalaya. Records were made of the leaf initiation period, leaf population dynamics, leaf expansion, leaf mass changes, leaf longevity and related parameters. Species of both groups produced leaves at similar rates during March to April. the driest period of the year. Species of both groups had approximately fully developed foliage during the warm, wet period (mid-June to mid-September) of the monsoon. However, significant differences were found at group level in other characters: shoot length (19.5 cm per shoot for deciduous and 11.7 cm for evergreen species); leaf population per 10 cm shoot length (4.7 vs 15.0); leaf area (107.9 vs 41.4 cm2/leaf); specific leaf mass (106.9 vs 191.3 g/m2); and leaf mass loss after the monsoon period, being rapid and higher (31.6%) in deciduous species and slow and limited in the evergreens (26.2%). However, species of the two groups showed considerable overlaps in the values of above characters. The evergreen species of the Central Himalaya resembled the deciduous species of the region more than the multi-year leaves of clearly evergreen species. The evergreens bear leaves throughout the year, but like deciduous species bear the cost of annual replacement of old leaves by new leaves. They seem to outcompete deciduous species by producing annually a greater mass of leaves of low-carbon cost per unit leaf mass), which is capable of conducting photosynthesis all year round. A situation of less marked contrast between favourable and nonfavourable periods, with respect to temperature, seems to favour the leaf characters of the evergreens.</description><subject>air temperature</subject><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>forests</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>growth rate</subject><subject>leaf expansion</subject><subject>leaves</subject><subject>longevity</subject><subject>mass</subject><subject>Plants and fungi</subject><subject>population dynamics</subject><subject>rain</subject><subject>seasonal variation</subject><subject>shoots</subject><subject>soil water</subject><issn>0020-7128</issn><issn>1432-1254</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><recordid>eNo9kMtOwzAQRS0EEqWw4QfwArFABPyK7SyhorRSJRbQdTTxow1Kk2CnoP49rgqsZhZnzlxdhC4puaeEqIfKE6aYFEQcoREVnGWU5eIYjQhhJFOU6VN0FuMHSbCWaoSWCwcer0L3PaxxD8PgQovrFrsvF1bBuRZDa7F1prbbbhtx7NPqIu48HtYOT1w7BGjwrN5AAzu4w_PW1nCOTjw00V38zjFaTp_fJ7Ns8foynzwuMsM1HTKrC2-VVqrihfE5Z0XBoeACrIVKel9ZW1WyyLmwkkhqtBUVd7kWyiuZc8nH6Obg7UP3uXVxKDd1NK5poHUpbUk1Y4QSncDbA2hCF2NwvuxDihx2JSXlvrnyafrXXIKvf60QDTQ-QGvq-H8hJCe52DuvDpiHroRVSMjyLb3jhCpZaE75D71Idfs</recordid><startdate>199212</startdate><enddate>199212</enddate><creator>Negi, G.C.S</creator><creator>Singh, S.P</creator><general>Springer</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>199212</creationdate><title>Leaf growth pattern in evergreen and deciduous species of the Central Himalaya, India</title><author>Negi, G.C.S ; Singh, S.P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c381t-d89fd7877b39cf532993a934addab6ffbddbb69534d6061c8d4b3e5847f765363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>air temperature</topic><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Autoecology</topic><topic>Biological and medical sciences</topic><topic>forests</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>growth rate</topic><topic>leaf expansion</topic><topic>leaves</topic><topic>longevity</topic><topic>mass</topic><topic>Plants and fungi</topic><topic>population dynamics</topic><topic>rain</topic><topic>seasonal variation</topic><topic>shoots</topic><topic>soil water</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Negi, G.C.S</creatorcontrib><creatorcontrib>Singh, S.P</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>International journal of biometeorology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Negi, G.C.S</au><au>Singh, S.P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Leaf growth pattern in evergreen and deciduous species of the Central Himalaya, India</atitle><jtitle>International journal of biometeorology</jtitle><date>1992-12</date><risdate>1992</risdate><volume>36</volume><issue>4</issue><spage>233</spage><epage>242</epage><pages>233-242</pages><issn>0020-7128</issn><eissn>1432-1254</eissn><coden>IJBMAO</coden><abstract>Leaf growth patterns were investigated in 11 evergreen (with leaf life-spans of just more than 1 year) and 15 deciduous species, occurring along an elevational gradient of 600-2200 m elevation in the Central Himalaya. Records were made of the leaf initiation period, leaf population dynamics, leaf expansion, leaf mass changes, leaf longevity and related parameters. Species of both groups produced leaves at similar rates during March to April. the driest period of the year. Species of both groups had approximately fully developed foliage during the warm, wet period (mid-June to mid-September) of the monsoon. However, significant differences were found at group level in other characters: shoot length (19.5 cm per shoot for deciduous and 11.7 cm for evergreen species); leaf population per 10 cm shoot length (4.7 vs 15.0); leaf area (107.9 vs 41.4 cm2/leaf); specific leaf mass (106.9 vs 191.3 g/m2); and leaf mass loss after the monsoon period, being rapid and higher (31.6%) in deciduous species and slow and limited in the evergreens (26.2%). However, species of the two groups showed considerable overlaps in the values of above characters. The evergreen species of the Central Himalaya resembled the deciduous species of the region more than the multi-year leaves of clearly evergreen species. The evergreens bear leaves throughout the year, but like deciduous species bear the cost of annual replacement of old leaves by new leaves. They seem to outcompete deciduous species by producing annually a greater mass of leaves of low-carbon cost per unit leaf mass), which is capable of conducting photosynthesis all year round. A situation of less marked contrast between favourable and nonfavourable periods, with respect to temperature, seems to favour the leaf characters of the evergreens.</abstract><cop>Heidelberg</cop><pub>Springer</pub><doi>10.1007/bf02726404</doi><tpages>10</tpages></addata></record> |
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source | Springer Nature - Complete Springer Journals |
subjects | air temperature Animal and plant ecology Animal, plant and microbial ecology Autoecology Biological and medical sciences forests Fundamental and applied biological sciences. Psychology growth rate leaf expansion leaves longevity mass Plants and fungi population dynamics rain seasonal variation shoots soil water |
title | Leaf growth pattern in evergreen and deciduous species of the Central Himalaya, India |
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