The decline of tree diversity on newly isolated tropical islands: A test of a null hypothesis and some implications
Identifieur interne : 000A94 ( Main/Exploration ); précédent : 000A93; suivant : 000A95The decline of tree diversity on newly isolated tropical islands: A test of a null hypothesis and some implications
Auteurs : Giles Leigh Jr [Panama] ; Joseph Wright [Panama] ; Allen Herre [Panama] ; E. Putz [États-Unis]Source :
- Evolutionary Ecology [ 0269-7653 ] ; 1993-01-01.
Abstract
Summary: Six islands, each less than a hectare in area, were isolated in about 1913 from the mainland of central Panamá by the rising waters of Gatun Lake. By 1980, the diversity of trees on all but one of these islands was far lower than on mainland plots of comparable size. A restricted subset of tree species has spread on these islands, notablyProtium panamense, Scheelea zonensis, Oenocarpus panamanus andSwartzia simplex. We constructed a null model to predict how chance would change tree diversity and the similarity of tree species compositions of different islands, assuming that each mature tree has equal chances of dying and/or reproducing, regardless of its species. This model cannot account for the diminished diversity of the changes in vegetation on these islands: some factors must be favoring a particular set of tree species. Two factors, exposure to wind and absence of mammals, seem needed to bring about the vegetation changes observed on these small islands. Their vegetation shows many signs of wind damage and of adaptation to resist wind, reflecting its exposure to dry season winds and storm winds sweeping across the lake from the west. Their most common tree species appear to have spread because mammals rarely visit these small and isolated islands. Seed of these common species are normally much eaten by mammals and do not need burial by mammals to escape insect attack. A thorough grasp of plant—animal interactions is needed to understand the events that have taken place on these islands. Identifying those ‘keystone animals’ essential for maintaining plant diversity is a necessary element of reserve design and forest management in the tropics.
Url:
DOI: 10.1007/BF01237735
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000544
- to stream Istex, to step Curation: 000474
- to stream Istex, to step Checkpoint: 000A58
- to stream Main, to step Merge: 000B29
- to stream Main, to step Curation: 000B20
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">The decline of tree diversity on newly isolated tropical islands: A test of a null hypothesis and some implications</title><author><name sortKey="Leigh Jr, Giles" sort="Leigh Jr, Giles" uniqKey="Leigh Jr G" first="Giles" last="Leigh Jr">Giles Leigh Jr</name></author><author><name sortKey="Wright, Joseph" sort="Wright, Joseph" uniqKey="Wright J" first="Joseph" last="Wright">Joseph Wright</name></author><author><name sortKey="Herre, Allen" sort="Herre, Allen" uniqKey="Herre A" first="Allen" last="Herre">Allen Herre</name></author><author><name sortKey="Putz, E" sort="Putz, E" uniqKey="Putz E" first="E." last="Putz">E. Putz</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:206A24B831A306835F4084318F5FD08CCB617952</idno><date when="1993" year="1993">1993</date><idno type="doi">10.1007/BF01237735</idno><idno type="url">https://api.istex.fr/document/206A24B831A306835F4084318F5FD08CCB617952/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000544</idno><idno type="wicri:Area/Istex/Curation">000474</idno><idno type="wicri:Area/Istex/Checkpoint">000A58</idno><idno type="wicri:doubleKey">0269-7653:1993:Leigh Jr G:the:decline:of</idno><idno type="wicri:Area/Main/Merge">000B29</idno><idno type="wicri:Area/Main/Curation">000B20</idno><idno type="wicri:Area/Main/Exploration">000A94</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">The decline of tree diversity on newly isolated tropical islands: A test of a null hypothesis and some implications</title><author><name sortKey="Leigh Jr, Giles" sort="Leigh Jr, Giles" uniqKey="Leigh Jr G" first="Giles" last="Leigh Jr">Giles Leigh Jr</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Panama</country><wicri:regionArea>Smithsonian Tropical Research Institute, Apartado 2072, Balboa</wicri:regionArea><wicri:noRegion>Balboa</wicri:noRegion></affiliation></author><author><name sortKey="Wright, Joseph" sort="Wright, Joseph" uniqKey="Wright J" first="Joseph" last="Wright">Joseph Wright</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Panama</country><wicri:regionArea>Smithsonian Tropical Research Institute, Apartado 2072, Balboa</wicri:regionArea><wicri:noRegion>Balboa</wicri:noRegion></affiliation></author><author><name sortKey="Herre, Allen" sort="Herre, Allen" uniqKey="Herre A" first="Allen" last="Herre">Allen Herre</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Panama</country><wicri:regionArea>Smithsonian Tropical Research Institute, Apartado 2072, Balboa</wicri:regionArea><wicri:noRegion>Balboa</wicri:noRegion></affiliation></author><author><name sortKey="Putz, E" sort="Putz, E" uniqKey="Putz E" first="E." last="Putz">E. Putz</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Botany, University of Florida, 32611, Gainesville, FL</wicri:regionArea><placeName><region type="state">Floride</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Evolutionary Ecology</title><title level="j" type="abbrev">Evol Ecol</title><idno type="ISSN">0269-7653</idno><idno type="eISSN">1573-8477</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1993-01-01">1993-01-01</date><biblScope unit="volume">7</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="76">76</biblScope><biblScope unit="page" to="102">102</biblScope></imprint><idno type="ISSN">0269-7653</idno></series><idno type="istex">206A24B831A306835F4084318F5FD08CCB617952</idno><idno type="DOI">10.1007/BF01237735</idno><idno type="ArticleID">Art5</idno><idno type="ArticleID">BF01237735</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0269-7653</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Summary: Six islands, each less than a hectare in area, were isolated in about 1913 from the mainland of central Panamá by the rising waters of Gatun Lake. By 1980, the diversity of trees on all but one of these islands was far lower than on mainland plots of comparable size. A restricted subset of tree species has spread on these islands, notablyProtium panamense, Scheelea zonensis, Oenocarpus panamanus andSwartzia simplex. We constructed a null model to predict how chance would change tree diversity and the similarity of tree species compositions of different islands, assuming that each mature tree has equal chances of dying and/or reproducing, regardless of its species. This model cannot account for the diminished diversity of the changes in vegetation on these islands: some factors must be favoring a particular set of tree species. Two factors, exposure to wind and absence of mammals, seem needed to bring about the vegetation changes observed on these small islands. Their vegetation shows many signs of wind damage and of adaptation to resist wind, reflecting its exposure to dry season winds and storm winds sweeping across the lake from the west. Their most common tree species appear to have spread because mammals rarely visit these small and isolated islands. Seed of these common species are normally much eaten by mammals and do not need burial by mammals to escape insect attack. A thorough grasp of plant—animal interactions is needed to understand the events that have taken place on these islands. Identifying those ‘keystone animals’ essential for maintaining plant diversity is a necessary element of reserve design and forest management in the tropics.</div></front></TEI><affiliations><list><country><li>Panama</li><li>États-Unis</li></country><region><li>Floride</li></region></list><tree><country name="Panama"><noRegion><name sortKey="Leigh Jr, Giles" sort="Leigh Jr, Giles" uniqKey="Leigh Jr G" first="Giles" last="Leigh Jr">Giles Leigh Jr</name></noRegion><name sortKey="Herre, Allen" sort="Herre, Allen" uniqKey="Herre A" first="Allen" last="Herre">Allen Herre</name><name sortKey="Wright, Joseph" sort="Wright, Joseph" uniqKey="Wright J" first="Joseph" last="Wright">Joseph Wright</name></country><country name="États-Unis"><region name="Floride"><name sortKey="Putz, E" sort="Putz, E" uniqKey="Putz E" first="E." last="Putz">E. Putz</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Musique/explor/MonteverdiV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000A94 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000A94 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Musique
|area= MonteverdiV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:206A24B831A306835F4084318F5FD08CCB617952
|texte= The decline of tree diversity on newly isolated tropical islands: A test of a null hypothesis and some implications
}}
| This area was generated with Dilib version V0.6.21. |  |