Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh

The key challenge in the fields of conservation and resource management is to track local, regional and global species extinctions and preserve biodiversity through optimization of investment of funds. To fulfil that purpose modelling and mapping habitat suitability of species is becoming essential....

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Autores principales:	Sangeeta Roy, Santanu Ray, Surjya Kumar Saikia
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Freshwater ecosystem Snapping tolerance Ensemble species distribution modelling Potential distribution Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/8dcd7720df3a40bfa67e45b394e73e4d
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spelling	oai:doaj.org-article:8dcd7720df3a40bfa67e45b394e73e4d2021-12-01T04:28:47ZIndicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh1470-160X10.1016/j.ecolind.2020.106906https://doaj.org/article/8dcd7720df3a40bfa67e45b394e73e4d2021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20308451https://doaj.org/toc/1470-160XThe key challenge in the fields of conservation and resource management is to track local, regional and global species extinctions and preserve biodiversity through optimization of investment of funds. To fulfil that purpose modelling and mapping habitat suitability of species is becoming essential. The freshwater ecosystem is today one of the most threatened ecosystems and fishes are especially vulnerable for climate change as they have fewer choices for dispersal. The altered thermal regimes, land use and hydrology together cause isolation, fragmentation and changes in distributional patterns of fish. In such landlocked situation, there is utmost need to identify suitable environmental conditions for a species to exist. Indigenous fish is one of the essential components of healthy inland aquatic ecosystems as they fulfil several important ecological functions and form an important part of the aquatic food web. Amblypharyngodon mola is an economically and ecologically important indigenous freshwater fish species of the tropical and subtropical floodplain rivers and wetland habitats of India and Bangladesh. However, lack of knowledge about the key environmental indicators is hindering appropriate management and conservation initiation. Modelling and mapping the distribution of A. mola was done for identifying the key environmental variables and predicting the potential distribution area of the species in current climatic condition. The species occurrence data were accessed from both primary and secondary sources and used after cleaning and removing biasness. Climatic, topographic, landcover and soil variables of 1 km resolution were used as environmental predictors. India and Bangladesh together were used as model background. Ensemble species distribution modelling was done, and the model was validated by area under the curve (AUC) value (>0.7). The result showed that the Ganges delta of lower reach going through West Bengal and Bangladesh is most suitable for A. mola occurrence. Annual upstream precipitation (hydroclim_12), soil pH in water (soil_average_02) and elevation (ele_01) are the key indicators for predicting the habitats suggesting the importance of hydroclimatic, topographic and soil variables in determining the distribution of the fish.Sangeeta RoySantanu RaySurjya Kumar SaikiaElsevierarticleFreshwater ecosystemSnapping toleranceEnsemble species distribution modellingPotential distributionEcologyQH540-549.5ENEcological Indicators, Vol 120, Iss , Pp 106906- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Freshwater ecosystem Snapping tolerance Ensemble species distribution modelling Potential distribution Ecology QH540-549.5
spellingShingle	Freshwater ecosystem Snapping tolerance Ensemble species distribution modelling Potential distribution Ecology QH540-549.5 Sangeeta Roy Santanu Ray Surjya Kumar Saikia Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh
description	The key challenge in the fields of conservation and resource management is to track local, regional and global species extinctions and preserve biodiversity through optimization of investment of funds. To fulfil that purpose modelling and mapping habitat suitability of species is becoming essential. The freshwater ecosystem is today one of the most threatened ecosystems and fishes are especially vulnerable for climate change as they have fewer choices for dispersal. The altered thermal regimes, land use and hydrology together cause isolation, fragmentation and changes in distributional patterns of fish. In such landlocked situation, there is utmost need to identify suitable environmental conditions for a species to exist. Indigenous fish is one of the essential components of healthy inland aquatic ecosystems as they fulfil several important ecological functions and form an important part of the aquatic food web. Amblypharyngodon mola is an economically and ecologically important indigenous freshwater fish species of the tropical and subtropical floodplain rivers and wetland habitats of India and Bangladesh. However, lack of knowledge about the key environmental indicators is hindering appropriate management and conservation initiation. Modelling and mapping the distribution of A. mola was done for identifying the key environmental variables and predicting the potential distribution area of the species in current climatic condition. The species occurrence data were accessed from both primary and secondary sources and used after cleaning and removing biasness. Climatic, topographic, landcover and soil variables of 1 km resolution were used as environmental predictors. India and Bangladesh together were used as model background. Ensemble species distribution modelling was done, and the model was validated by area under the curve (AUC) value (>0.7). The result showed that the Ganges delta of lower reach going through West Bengal and Bangladesh is most suitable for A. mola occurrence. Annual upstream precipitation (hydroclim_12), soil pH in water (soil_average_02) and elevation (ele_01) are the key indicators for predicting the habitats suggesting the importance of hydroclimatic, topographic and soil variables in determining the distribution of the fish.
format	article
author	Sangeeta Roy Santanu Ray Surjya Kumar Saikia
author_facet	Sangeeta Roy Santanu Ray Surjya Kumar Saikia
author_sort	Sangeeta Roy
title	Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh
title_short	Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh
title_full	Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh
title_fullStr	Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh
title_full_unstemmed	Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh
title_sort	indicator environmental variables in regulating the distribution patterns of small freshwater fish amblypharyngodon mola in india and bangladesh
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/8dcd7720df3a40bfa67e45b394e73e4d
work_keys_str_mv	AT sangeetaroy indicatorenvironmentalvariablesinregulatingthedistributionpatternsofsmallfreshwaterfishamblypharyngodonmolainindiaandbangladesh AT santanuray indicatorenvironmentalvariablesinregulatingthedistributionpatternsofsmallfreshwaterfishamblypharyngodonmolainindiaandbangladesh AT surjyakumarsaikia indicatorenvironmentalvariablesinregulatingthedistributionpatternsofsmallfreshwaterfishamblypharyngodonmolainindiaandbangladesh
_version_	1718405915534688256

Indicator environmental variables in regulating the distribution patterns of small freshwater fish Amblypharyngodon mola in India and Bangladesh

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