Production and fate of kelp detritus

ABSTRACT: The flow of detritus between habitats is an important form of connectivity that affects regional productivity and the spatial organization of marine ecosystems. Kelps form highly productive beds or forests that produce detritus through incremental blade erosion, fragmentation of blades, an...

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Bibliographische Detailangaben
Veröffentlicht in:	Marine Ecology Progress Series. - Inter-Research, 1979. - 467(2012) vom: Okt., Seite 281-302
1. Verfasser:	Krumhansl, Kira A. (VerfasserIn)
Weitere Verfasser:	Scheibling, Robert E.
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2012
Zugriff auf das übergeordnete Werk:	Marine Ecology Progress Series
Schlagworte:	Kelp bed Kelp forest Connectivity Detritus Resource subsidy Local-regional productivity Biological sciences Physical sciences Economics Business


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100	1		\|a Krumhansl, Kira A. \|e verfasserin \|4 aut
245	1	0	\|a Production and fate of kelp detritus
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520			\|a ABSTRACT: The flow of detritus between habitats is an important form of connectivity that affects regional productivity and the spatial organization of marine ecosystems. Kelps form highly productive beds or forests that produce detritus through incremental blade erosion, fragmentation of blades, and dislodgement of whole fronds and thalli. Rates of detrital production range from 8 to 2657 g C m−2yr−1for blade erosion and fragmentation, and from 22 to 839 g C m−2yr−1for loss of fronds and thalli. The estimated global average rate of detrital production by kelps is 706 g C m−2yr−1, accounting for 82% of annual kelp productivity. Detrital production rates are regulated by current and wave-driven hydrodynamic forces and are highest during severe storms and following blade weakening through damage by grazers and encrusting epibionts. Detritus settles within kelp beds or forests and is exported to neighboring or distant habitats, including sandy beaches, rocky intertidal shores, rocky and sedimentary subtidal areas, and the deep sea. Exported kelp detritus can provide a significant resource subsidy and enhance secondary production in these communities ranging from tens of meters to hundreds of kilometers from the source of production. Loss of kelp biomass is occurring worldwide through the combined effects of climate change, pollution, fishing, and harvesting of kelp, which can depress rates of detrital production and subsidy to adjacent communities, with large-scale consequences for productivity.
540			\|a © Inter-Research 2012
650		4	\|a Kelp bed
650		4	\|a Kelp forest
650		4	\|a Connectivity
650		4	\|a Detritus
650		4	\|a Resource subsidy
650		4	\|a Local-regional productivity
650		4	\|a Biological sciences \|x Ecology \|x Population ecology \|x Synecology \|x Biocenosis \|x Aquatic communities
650		4	\|a Physical sciences \|x Earth sciences \|x Geography \|x Geomorphology \|x Landforms \|x Coastal landforms \|x Beaches
650		4	\|a Biological sciences \|x Biology \|x Zoology \|x Animals \|x Invertebrates \|x Aquatic invertebrates \|x Echinoderms \|x Sea urchins
650		4	\|a Biological sciences \|x Ecology \|x Ecosystems \|x Aquatic ecosystems \|x Marine ecosystems
650		4	\|a Economics \|x Economic policy \|x Public finance \|x Subsidies
650		4	\|a Biological sciences \|x Ecology \|x Aquatic ecology \|x Marine ecology \|x Coastal ecology
650		4	\|a Business \|x Business economics \|x Commercial production \|x Productivity
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plant ecology \|x Forest ecology \|x Forest ecosystems \|x Forest habitats
650		4	\|a Physical sciences \|x Earth sciences \|x Geography \|x Geomorphology \|x Bodies of water \|x Seas
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Marine botany \|x Aquatic plants \|x Macrophytes \|x REVIEW
655		4	\|a research-article
700	1		\|a Scheibling, Robert E. \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Marine Ecology Progress Series \|d Inter-Research, 1979 \|g 467(2012) vom: Okt., Seite 281-302 \|w (DE-627)320617998 \|w (DE-600)2022265-8 \|x 16161599 \|7 nnns
773	1	8	\|g volume:467 \|g year:2012 \|g month:10 \|g pages:281-302
856	4	0	\|u https://www.jstor.org/stable/24876149 \|3 Volltext
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