Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture

Coastal bivalve aquaculture is considered to have large impacts on the structure and functions of macrofauna assemblages. In the present study, we evaluated the macrofauna assemblages from 12 bivalve farms along the China coast using 11 compositional and functional indices and 15 biological traits w...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Xin Sun, Jianyu Dong, Chengye Hu, Yuyang Zhang, Yong Chen, Xiumei Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Macrofaunal assemblages Bivalve aquaculture Diversity indices Functional diversity Biological trait analysis Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/9c275261d3284d308bdb81681c578722
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9c275261d3284d308bdb81681c578722
record_format	dspace
spelling	oai:doaj.org-article:9c275261d3284d308bdb81681c5787222021-12-01T04:51:53ZUse of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture1470-160X10.1016/j.ecolind.2021.107713https://doaj.org/article/9c275261d3284d308bdb81681c5787222021-08-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003782https://doaj.org/toc/1470-160XCoastal bivalve aquaculture is considered to have large impacts on the structure and functions of macrofauna assemblages. In the present study, we evaluated the macrofauna assemblages from 12 bivalve farms along the China coast using 11 compositional and functional indices and 15 biological traits within four major categories. Linear mixed models (LMMs) were used to identify the most influential variable on the selected indices. The RLQ and fourth-corner approaches were used to investigate the response of functional traits composition to the characteristics of bivalve farms. Our results suggest that the increased densities of cultured bivalve had a negative impact on the organisms sharing similar function traits but the ecosystem could still maintain the functional richness because those organisms were mainly on the redundant group, and their loss favored a more balanced distribution of taxa and biological traits. Additionally, biological trait compositions of macrofaunal assemblages were more similar within farms using the same culture method. Small-sized opportunistic deposit feeders were likely to appear in cage farms, and predators were more attracted by rope farms. In bottom-based bivalve farms, filter feeders dominated but carnivores and crawlers were significantly lower compared to the other culture methods. We conclude that functional redundancy is a critical indicator for identifying the suitable scale and intensity of bivalve aquaculture. From the perspective of maintaining biological traits, bottom-based culture causes less ecological impact compared to off-bottom culture, the latter is more suitable in areas with relatively deep water and strong current and water exchange rate.Xin SunJianyu DongChengye HuYuyang ZhangYong ChenXiumei ZhangElsevierarticleMacrofaunal assemblagesBivalve aquacultureDiversity indicesFunctional diversityBiological trait analysisEcologyQH540-549.5ENEcological Indicators, Vol 127, Iss , Pp 107713- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Macrofaunal assemblages Bivalve aquaculture Diversity indices Functional diversity Biological trait analysis Ecology QH540-549.5
spellingShingle	Macrofaunal assemblages Bivalve aquaculture Diversity indices Functional diversity Biological trait analysis Ecology QH540-549.5 Xin Sun Jianyu Dong Chengye Hu Yuyang Zhang Yong Chen Xiumei Zhang Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture
description	Coastal bivalve aquaculture is considered to have large impacts on the structure and functions of macrofauna assemblages. In the present study, we evaluated the macrofauna assemblages from 12 bivalve farms along the China coast using 11 compositional and functional indices and 15 biological traits within four major categories. Linear mixed models (LMMs) were used to identify the most influential variable on the selected indices. The RLQ and fourth-corner approaches were used to investigate the response of functional traits composition to the characteristics of bivalve farms. Our results suggest that the increased densities of cultured bivalve had a negative impact on the organisms sharing similar function traits but the ecosystem could still maintain the functional richness because those organisms were mainly on the redundant group, and their loss favored a more balanced distribution of taxa and biological traits. Additionally, biological trait compositions of macrofaunal assemblages were more similar within farms using the same culture method. Small-sized opportunistic deposit feeders were likely to appear in cage farms, and predators were more attracted by rope farms. In bottom-based bivalve farms, filter feeders dominated but carnivores and crawlers were significantly lower compared to the other culture methods. We conclude that functional redundancy is a critical indicator for identifying the suitable scale and intensity of bivalve aquaculture. From the perspective of maintaining biological traits, bottom-based culture causes less ecological impact compared to off-bottom culture, the latter is more suitable in areas with relatively deep water and strong current and water exchange rate.
format	article
author	Xin Sun Jianyu Dong Chengye Hu Yuyang Zhang Yong Chen Xiumei Zhang
author_facet	Xin Sun Jianyu Dong Chengye Hu Yuyang Zhang Yong Chen Xiumei Zhang
author_sort	Xin Sun
title	Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture
title_short	Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture
title_full	Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture
title_fullStr	Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture
title_full_unstemmed	Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture
title_sort	use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9c275261d3284d308bdb81681c578722
work_keys_str_mv	AT xinsun useofmacrofaunalassemblageindicesandbiologicaltraitanalysistoassesstheecologicalimpactsofcoastalbivalveaquaculture AT jianyudong useofmacrofaunalassemblageindicesandbiologicaltraitanalysistoassesstheecologicalimpactsofcoastalbivalveaquaculture AT chengyehu useofmacrofaunalassemblageindicesandbiologicaltraitanalysistoassesstheecologicalimpactsofcoastalbivalveaquaculture AT yuyangzhang useofmacrofaunalassemblageindicesandbiologicaltraitanalysistoassesstheecologicalimpactsofcoastalbivalveaquaculture AT yongchen useofmacrofaunalassemblageindicesandbiologicaltraitanalysistoassesstheecologicalimpactsofcoastalbivalveaquaculture AT xiumeizhang useofmacrofaunalassemblageindicesandbiologicaltraitanalysistoassesstheecologicalimpactsofcoastalbivalveaquaculture
_version_	1718405739017404416

Use of macrofaunal assemblage indices and biological trait analysis to assess the ecological impacts of coastal bivalve aquaculture

Ejemplares similares