globalchange  > 气候变化与战略
DOI: 10.1007/s00027-020-0701-9
论文题名:
Extreme climate events can slow down litter breakdown in streams
作者: Correa-Araneda F.; Tonin A.M.; Pérez J.; Álvarez K.; López-Rojo N.; Díaz A.; Esse C.; Encina-Montoya F.; Figueroa R.; Cornejo A.; Boyero L.
刊名: Aquatic Sciences
ISSN: 10151621
出版年: 2020
卷: 82, 期:2
语种: 英语
英文关键词: Benthos ; Climate change ; Ecosystem approach ; Invertebrates ; Riparian ; Stream
Scopus关键词: benthos ; climate change ; climate conditions ; ecological approach ; invertebrate ; leaf litter ; organic matter ; physicochemical property ; stream ; temperature effect ; tree ; Chile ; Invertebrata
英文摘要: Extreme temperatures have increased in intensity, duration and frequency in the last century, with potential consequences on key ecological processes such as organic matter breakdown. Many stream ecosystems are fueled by the breakdown of terrestrial leaf litter, which is exposed to atmospheric conditions for certain periods of time before entering the stream. Thus, extreme warming or freezing events may affect the litter physicochemical structure, which could translate into altered breakdown within the stream. The above prediction was tested by exposing litter of common riparian tree species in southern Chile to freezing (−20 ºC; dry or wet litter) or heating (40 ºC) and comparing breakdown with control litter exposed to room temperature (20 ºC), separating the effects of different breakdown agents (i.e., leaching, microorganisms and detritivores). The greatest effects were found in wet litter subjected to freezing; this treatment significantly increased leaching in the short term (48 h) and slowed down breakdown in the long term (30 days), mostly due to the inhibition of microbial breakdown. Heating also retarded microbial breakdown, but the effect was smaller. Our results suggest that short-term extreme temperatures—particularly cold ones—have the potential to slow down litter breakdown in streams, which will most likely impact global biogeochemical cycles where streams play a key role. © 2020, Springer Nature Switzerland AG.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158577
Appears in Collections:气候变化与战略

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作者单位: Unidad de Cambio Climático y Medio Ambiente, Instituto de Estudios de Hábitat (IEH), Facultad de Arquitectura y Construcción, Universidad Autónoma de Chile, Temuco, Chile; Núcleo del Estudio en Ciencias Ambientales (NEA), Universidad Católica de Temuco, Temuco, Chile; Departamento de Ciencias Ambientales, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, Chile; Aquariparia/Limnology Lab, Department of Ecology, IB, University of Brasília, Brasília, Brazil; Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain; Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile; Departamento de Ecosistemas Acuáticos, Facultad de Ciencias Ambientales, Universidad de Concepción, Concepción, Chile; Programa de Doctorado en Ciencias Naturales con énfasis en Entomología, Universidad de Panamá, Panama, Panama; Laboratorio de Macroinvertebrados Acuáticos, Instituto Conmemorativo Gorgas de Estudios de La Salud, Avenida Justo Arosemena & Calle 35, Panama, 0816-02593, Panama; IKERBASQUE, Bilbao, Spain

Recommended Citation:
Correa-Araneda F.,Tonin A.M.,Pérez J.,et al. Extreme climate events can slow down litter breakdown in streams[J]. Aquatic Sciences,2020-01-01,82(2)
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