Resistance and facilitation by native algal communities in the invasion success ofUndaria pinnatifida

ABSTRACT: The mechanisms by which non-indigenous species overcome resistance in native communities are not well understood but are fundamental to the ability of invaders to persist and spread once they reach alien shores. One of the most widespread invaders is the kelpUndaria pinnatifida. Here we te...

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Bibliographische Detailangaben
Veröffentlicht in:	Marine Ecology Progress Series. - Inter-Research, 1979. - 468(2012) vom: Nov., Seite 95-105
1. Verfasser:	Thompson, Glen A. (VerfasserIn)
Weitere Verfasser:	Schiel, David R.
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2012
Zugriff auf das übergeordnete Werk:	Marine Ecology Progress Series
Schlagworte:	Fucoid Canopy Mechanisms Facilitation Competition Turfing algae Biological sciences Environmental studies Applied sciences Physical sciences


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100	1		\|a Thompson, Glen A. \|e verfasserin \|4 aut
245	1	0	\|a Resistance and facilitation by native algal communities in the invasion success ofUndaria pinnatifida
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520			\|a ABSTRACT: The mechanisms by which non-indigenous species overcome resistance in native communities are not well understood but are fundamental to the ability of invaders to persist and spread once they reach alien shores. One of the most widespread invaders is the kelpUndaria pinnatifida. Here we test disturbance, competition and facilitation in its recruitment into intertidal algal communities in southern New Zealand. In field-based experiments, we manipulated native fucoid andU. pinnatifidacanopies, as well as the abundance and type of understory turfing species, and provided various gap sizes in native communities.Undaria pinnatifidarecruitment occurred almost exclusively on coralline turf and in the absence of canopies, both native and conspecific. Where the native fucoid canopy was removed,U. pinnatifidarecruited into gaps of all sizes (5 × 5 cm, 25 × 25 cm, 50 × 50 cm), but the smallest gaps recovered their native canopy within several months and precluded further recruitment. Experimental manipulations of coralline turf showed that recruitment ofU. pinnatifidawas orders of magnitude greater where turf was present, regardless of the timing or sizes of clearances. Facilitation did not occur with other turfing species. Overall, native fucoids showed high resistance to invasion, but there was great facilitation by native coralline turf. Furthermore, as annualU. pinnatifidacanopies disappear over summer, it is clear that coralline turf harbors the microscopic stages ofU. pinnatifidathat will form the following year’s populations. As turfing species increase and persist following disturbances of native canopies worldwide, it can be expected that the recruitment dynamics of non-indigenous species will also changes.
540			\|a © Inter-Research 2012
650		4	\|a Fucoid
650		4	\|a Canopy
650		4	\|a Mechanisms
650		4	\|a Facilitation
650		4	\|a Competition
650		4	\|a Turfing algae
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Marine botany \|x Phycology \|x Algae
650		4	\|a Biological sciences \|x Biology \|x Biological taxonomies \|x Species \|x Introduced species \|x Invasive species
650		4	\|a Environmental studies \|x Atmospheric sciences \|x Climatology \|x Seasons
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plant ecology \|x Vegetation \|x Vegetation structure \|x Plant strata \|x Vegetation canopies
650		4	\|a Biological sciences \|x Ecology \|x Population ecology \|x Synecology \|x Biocenosis \|x Aquatic communities
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Marine botany \|x Phycology \|x Algae \|x Seaweeds
650		4	\|a Applied sciences \|x Engineering \|x Civil engineering \|x Marine engineering \|x Marine structures \|x Harbors
650		4	\|a Biological sciences \|x Ecology \|x Aquatic ecology \|x Marine ecology
650		4	\|a Biological sciences \|x Ecology \|x Ecological processes \|x Ecological competition \|x Interspecific competition \|x Ecological invasion
650		4	\|a Physical sciences \|x Earth sciences \|x Geography \|x Geomorphology \|x Landforms \|x Coastal landforms \|x Coasts
655		4	\|a research-article
700	1		\|a Schiel, David R. \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Marine Ecology Progress Series \|d Inter-Research, 1979 \|g 468(2012) vom: Nov., Seite 95-105 \|w (DE-627)320617998 \|w (DE-600)2022265-8 \|x 16161599 \|7 nnns
773	1	8	\|g volume:468 \|g year:2012 \|g month:11 \|g pages:95-105
856	4	0	\|u https://www.jstor.org/stable/24876159 \|3 Volltext
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