Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta

Saltwater intrusion is a potential risk damaging crop diversity and productivity due to degraded soil physicochemical properties. However, little is known about how salinity affects the structure and function of soil nematodes community in intensive rice cultivated area. This study aimed (1) to asse...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Van Sinh Nguyen, Minh Khoi Chau, Quang Minh Vo, Van Khoa Le, Thi Kim Phuong Nguyen, Masaaki Araki, Roland N. Perry, Anh Duc Tran, Duy Minh Dang, Ba Linh Tran, Gyu Lee Chol, Koki Toyota
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Nematode diversity Indicator species Paddy rice Nematode functional guild Salinity Soil fertility Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d39898277e9141eabeb75ebb9c711eb9
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d39898277e9141eabeb75ebb9c711eb9
record_format	dspace
spelling	oai:doaj.org-article:d39898277e9141eabeb75ebb9c711eb92021-12-01T04:41:38ZImpacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta1470-160X10.1016/j.ecolind.2020.107284https://doaj.org/article/d39898277e9141eabeb75ebb9c711eb92021-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20312267https://doaj.org/toc/1470-160XSaltwater intrusion is a potential risk damaging crop diversity and productivity due to degraded soil physicochemical properties. However, little is known about how salinity affects the structure and function of soil nematodes community in intensive rice cultivated area. This study aimed (1) to assess the impacts of saltwater intrusion on the nematode community in alluvial and acid sulfate soils; and (2) to evaluate its relation with soil conditions. Saltwater intrusion reduced the abundance of both free-living nematodes (FLN) and plant-parasitic nematodes (dominated by Hirschmanniella) in soils. FLN community was different among sites with different physicochemical properties. The omnivorous genera Aporcelaimellus and Thornenema were only found in non-salt-affected alluvial soil, whilst Mesodorylaimus was dominant in salt-affected acid sulfate soil, suggesting that this genus might be tolerant to higher EC and soluble Na+, K+, Ca2+. The bacterivorous nematodes (dominant taxa Chronogaster, Rhabdolaimus) were dominant in both non-salt affected and salt-affected alluvial soils, which accounted for 48% and 40%, respectively, whilst it accounted for 21% in salt-affected acid sulfate soil. The abundance of fungivorous nematodes (Aphelenchoides, Ditylenchus, Filenchus) were greater in salt-affected alluvial soil in contrast to the other treatments, suggesting that these might be tolerant to salinity and low pH. Saltwater intrusion reduced biological diversity (Margalef, Shannon-Wiener, and Hill’s indices), maturity index (∑MI, MI25), and clearly affected functional guilds of nematode community, especially c-p 5 group was reduced in both salt-affected soils. This study suggests that saltwater intrusion showed a potential risk in the degradation of soil properties, as indicated by the altered nematode community, trophic structure, functional guilds and their ecological indices in paddy fields.Van Sinh NguyenMinh Khoi ChauQuang Minh VoVan Khoa LeThi Kim Phuong NguyenMasaaki ArakiRoland N. PerryAnh Duc TranDuy Minh DangBa Linh TranGyu Lee CholKoki ToyotaElsevierarticleNematode diversityIndicator speciesPaddy riceNematode functional guildSalinitySoil fertilityEcologyQH540-549.5ENEcological Indicators, Vol 122, Iss , Pp 107284- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nematode diversity Indicator species Paddy rice Nematode functional guild Salinity Soil fertility Ecology QH540-549.5
spellingShingle	Nematode diversity Indicator species Paddy rice Nematode functional guild Salinity Soil fertility Ecology QH540-549.5 Van Sinh Nguyen Minh Khoi Chau Quang Minh Vo Van Khoa Le Thi Kim Phuong Nguyen Masaaki Araki Roland N. Perry Anh Duc Tran Duy Minh Dang Ba Linh Tran Gyu Lee Chol Koki Toyota Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta
description	Saltwater intrusion is a potential risk damaging crop diversity and productivity due to degraded soil physicochemical properties. However, little is known about how salinity affects the structure and function of soil nematodes community in intensive rice cultivated area. This study aimed (1) to assess the impacts of saltwater intrusion on the nematode community in alluvial and acid sulfate soils; and (2) to evaluate its relation with soil conditions. Saltwater intrusion reduced the abundance of both free-living nematodes (FLN) and plant-parasitic nematodes (dominated by Hirschmanniella) in soils. FLN community was different among sites with different physicochemical properties. The omnivorous genera Aporcelaimellus and Thornenema were only found in non-salt-affected alluvial soil, whilst Mesodorylaimus was dominant in salt-affected acid sulfate soil, suggesting that this genus might be tolerant to higher EC and soluble Na+, K+, Ca2+. The bacterivorous nematodes (dominant taxa Chronogaster, Rhabdolaimus) were dominant in both non-salt affected and salt-affected alluvial soils, which accounted for 48% and 40%, respectively, whilst it accounted for 21% in salt-affected acid sulfate soil. The abundance of fungivorous nematodes (Aphelenchoides, Ditylenchus, Filenchus) were greater in salt-affected alluvial soil in contrast to the other treatments, suggesting that these might be tolerant to salinity and low pH. Saltwater intrusion reduced biological diversity (Margalef, Shannon-Wiener, and Hill’s indices), maturity index (∑MI, MI25), and clearly affected functional guilds of nematode community, especially c-p 5 group was reduced in both salt-affected soils. This study suggests that saltwater intrusion showed a potential risk in the degradation of soil properties, as indicated by the altered nematode community, trophic structure, functional guilds and their ecological indices in paddy fields.
format	article
author	Van Sinh Nguyen Minh Khoi Chau Quang Minh Vo Van Khoa Le Thi Kim Phuong Nguyen Masaaki Araki Roland N. Perry Anh Duc Tran Duy Minh Dang Ba Linh Tran Gyu Lee Chol Koki Toyota
author_facet	Van Sinh Nguyen Minh Khoi Chau Quang Minh Vo Van Khoa Le Thi Kim Phuong Nguyen Masaaki Araki Roland N. Perry Anh Duc Tran Duy Minh Dang Ba Linh Tran Gyu Lee Chol Koki Toyota
author_sort	Van Sinh Nguyen
title	Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta
title_short	Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta
title_full	Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta
title_fullStr	Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta
title_full_unstemmed	Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta
title_sort	impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the vietnamese mekong delta
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d39898277e9141eabeb75ebb9c711eb9
work_keys_str_mv	AT vansinhnguyen impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT minhkhoichau impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT quangminhvo impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT vankhoale impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT thikimphuongnguyen impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT masaakiaraki impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT rolandnperry impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT anhductran impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT duyminhdang impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT balinhtran impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT gyuleechol impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta AT kokitoyota impactsofsaltwaterintrusiononsoilnematodescommunityinalluvialandacidsulfatesoilsinpaddyricefieldsinthevietnamesemekongdelta
_version_	1718405819070939136

Impacts of saltwater intrusion on soil nematodes community in alluvial and acid sulfate soils in paddy rice fields in the Vietnamese Mekong Delta

Ejemplares similares