Nischendifferenzierung zweier nah verwandter Neophyten im urbanen Raum
Kurzformat
Nischendifferenzierung zweier nah verwandter Neophyten im urbanen Raum / Heiner Lenzin, Peter Nagel, Alexandra Gross, Corinne Huck
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Basler Bibliographie, -
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| 008 | 120901s2011 sz 00| | eng | ||
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| 245 | 0 | 0 | |a Nischendifferenzierung zweier nah verwandter Neophyten im urbanen Raum |c Heiner Lenzin, Peter Nagel, Alexandra Gross, Corinne Huck |
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| 520 | |a The alien Galinsoga ciliata and G. parviflora are widely distributed in Switzerlandin rural as well as urban areas. They are both regarded as weeds, are oftensympatric and grow in similar ecological settings. In urban environments, the otherwiseslight ecological differences between species appear to be more expressed,but quantitative studies analyzing the distribution pattern, habitat and substratepreferences of both species were missing. In the city of Basel (Switzerland) Galinsogaciliata (Raf.) Blake and G. parviflora Cav. were mapped onto a 500 m3500 mgrid. At each locality population density, habitat and substrate type were recorded.G. ciliata was more wide-spread and seven times more frequent than G. parviflora.These differences existed despite G. ciliata being introduced to Europe and to Baselmuch later than G. parviflora.In contrast to G. parviflora, which was absent in the peripheral areas of thetown, the stands of G. ciliata were spread over the whole town area. Despite thefact that both species prefer nutrient- and humus-rich soil and coexisted in nutrientrichhabitats in the city of Basel, G. parviflora grows more often in pavement gapsand crevices of stones, concrete or asphalt than G. ciliata. The lower frequency ofG. parviflora, its smaller aggregations, and the exploitation of the most extremehabitats demonstrate the weak competitiveness compared with G. ciliata.Hence, in urban areas, where the growth conditions for the two weed speciesare not optimal, G. parviflora could maintain its presence by showing a clear nichedifferentiation compared to G. ciliata. | ||
| 520 | |a Betr. die Ausbreitung von zwei Galinsoga-Arten in Basel |5 ubs-A115 | ||
| 691 | |e 3.5.4.4.3.1 |2 ubs-FA | ||
| 700 | 1 | |a Nagel, Peter | |
| 700 | 1 | |a Lenzin, Heiner |0 (DE-588)1089226314 | |
| 700 | 1 | |a Gross, Alexandra | |
| 700 | 1 | |a Huck, Corinne | |
| 773 | 0 | |t Bauhinia |d Basel : Botanische Gesellschaft |g yr:2011 |g no:23 |w (IDSBB)000082414DSV01 | |
| 852 | 4 | |b A115 |c 115BB |j - |9 (41SLSP_UBS)9960019520105504 | |
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| 986 | |a (41SLSP_UBS)9960019520105504 |9 (41SLSP_UBS)9960019520105504 | ||
| 990 | |b basb2011 |9 LOCAL |9 (41SLSP_UBS)9960019520105504 | ||
| 991 | |a fdbbs Institution: Universität Basel. Faculty of Science. Departement Umweltwissenschaften. Institut für Natur- Landschafts- und Umweltschutz. Biogeographie (Nagel) |5 IZ UBS/01.09.2012 CONV |9 LOCAL |9 (41SLSP_UBS)9960019520105504 | ||
Basisinformationen
Signatur:
-
Basler Bibliographie, -
Ressourcentyp:
Eintrag Basler Bibliographie
Titel:
Nischendifferenzierung zweier nah verwandter Neophyten im urbanen Raum / Heiner Lenzin, Peter Nagel, Alexandra Gross, Corinne Huck
Inhalt und innere Ordnung
Inhalt:
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The alien Galinsoga ciliata and G. parviflora are widely distributed in Switzerlandin rural as well as urban areas. They are both regarded as weeds, are oftensympatric and grow in similar ecological settings. In urban environments, the otherwiseslight ecological differences between species appear to be more expressed,but quantitative studies analyzing the distribution pattern, habitat and substratepreferences of both species were missing. In the city of Basel (Switzerland) Galinsogaciliata (Raf.) Blake and G. parviflora Cav. were mapped onto a 500 m3500 mgrid. At each locality population density, habitat and substrate type were recorded.G. ciliata was more wide-spread and seven times more frequent than G. parviflora.These differences existed despite G. ciliata being introduced to Europe and to Baselmuch later than G. parviflora.In contrast to G. parviflora, which was absent in the peripheral areas of thetown, the stands of G. ciliata were spread over the whole town area. Despite thefact that both species prefer nutrient- and humus-rich soil and coexisted in nutrientrichhabitats in the city of Basel, G. parviflora grows more often in pavement gapsand crevices of stones, concrete or asphalt than G. ciliata. The lower frequency ofG. parviflora, its smaller aggregations, and the exploitation of the most extremehabitats demonstrate the weak competitiveness compared with G. ciliata.Hence, in urban areas, where the growth conditions for the two weed speciesare not optimal, G. parviflora could maintain its presence by showing a clear nichedifferentiation compared to G. ciliata.
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Betr. die Ausbreitung von zwei Galinsoga-Arten in Basel; ubs-A115
Anmerkungen
Sprache, Schrift:
Englisch
Klassifikationen
Klassifikation (Basler Bibliographie):
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3.5.4.4.3.1
Code
Code Bibliographie:
basb2011
Identifikatoren
Systemnummer:
991036684609705501
Andere Systemnummer:
-
(swissbib)06377027X-41slsp_network
-
06377027X
-
(IDSBB)006001952DSV01
-
(EXLNZ-41SLSP_NETWORK)991036684609705501
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(41SLSP_UBS)9960019520105504