Flash info:

Decade-scale change in testate amoebae community primarily driven by anthropogenic disturbance than natural change in a large subtropical reservoir

Author(s): Jean Claude Ndayishimiye,   Tian Lin,   Pascaline Nyirabuhoro,   Gan Zhang,   Wenjing Zhang,   Hossein Ganjidoust,   Jun Yang*,  

Category: Environmental Science, Natural science
Title First Author Publication Year
Decade-scale Change In Testate Amoebae Community Primarily Driven By Anthropogenic Disturbance Than Natural Change In A Large Subtropical Reservoir Jean Claude Ndayishimiye 2021

First Author Jean Claude Ndayishimiye
Abstract

Understanding the extent of human activities leading to an influx of chemical pollutants that cause substantial environmental transformations is the focus of much ongoing research. In this study, we present a multi-proxy record based on a sediment core from a large subtropical reservoir (Xinfengjiang Reservoir) in south China with an emphasis on the changes in testate amoebae community, in combination with sedimentological (radioactivity, physicochemistry, nutrient and organochlorine pesticides) and climatological (air temperature and precipitation) data over the last three decades. Twenty-seven testate amoebae species belonging to seven genera (Arcella, Centropyxis, Cyclopyxis, Difflugia, Netzelia, Euglypha and Pseudodifflugia) were observed. Species richness, abundance and biomass of testate amoebae were in ranges of 18–26 species, 616–825 ind. ml−1 and 9.0–19.4 μg C ml−1, respectively. Two development stages of the reservoir, dated to 1978–1993 (stage 1) and 1993–2006 (stage 2), were distinguished based on testate amoebae communities. Stage 1 was characterized by elevated dry bulk density, carbon-to‑nitrogen ratio and p,p’-DDE in the sediment core and an impact of nitrogen and sulfur deficiency on testate amoebae. Stage 2 was marked by a decrease of dry bulk density, elevated concentrations of aluminum, iron and carbon, low carbon-to‑nitrogen ratio and organochlorine pesticides, fluctuations in rainfall on shorter and yearly timescales, and a stronger influence of the organochlorine pesticides on testate amoebae. Testate amoebae community change and the identified two-stage development were consistent with atmospheric deposition of organochlorine pesticides from anthropogenic sources inside and outside the reservoir watershed, nutrient influx and sediment physicochemistry. The testate amoebae community dynamics and a strong community-environment relationship in stage 2 were linked with non-random patterns in the biotic neighborhoods of species (deterministic processes). The results suggest a stronger impact of anthropogenic disturbance than natural environmental change on testate amoebae community variation of Xinfengjiang Reservoir over time.

Authors Jean Claude Ndayishimiye,   Tian Lin,   Pascaline Nyirabuhoro,   Gan Zhang,   Wenjing Zhang,   Hossein Ganjidoust,   Jun Yang*,  
Page Number 147026
Volume: 78
Pub Year: 2021
ISBN: ... ...
Pub Name: Science of the Total Environment
The full text link: https://doi.org/10.1016/j.scitotenv.2021.147026
Citation:

Ndayishimiye JC, Lin T, Nyirabuhoro P, Zhang G, Zhang WJ, Ganjidoust H, Yang J*. 2021. Decade-scale change in testate amoebae community primarily driven by anthropogenic disturbance than natural change in a large subtropical reservoir. Science of the Total Environment, 78, fiab036, DOI: 10.1016/j.scitotenv.2021.147026.



Nature Conference – Upcoming opportunities

Nature Conference – Upcoming opportunities

in: Advertisement
Read More

Web of Science and Scopus ‒ The latest list of free publication research journals

Web of Science and Scopus ‒ The latest list of free publication research journals

in: Advertisement
Read More

icipe – Current job openings

icipe – Current job openings

in: Advertisement
Read More

UNESCO – Current job openings

UNESCO – Current job openings

in: Advertisement
Read More

UNEP – Current job openings

UNEP – Current job openings

in: Advertisement
Read More

FAO – Current job openings

FAO – Current job openings

in: Advertisement
Read More

Nature Careers ‒ Job vacancies

Nature Careers ‒ Job vacancies

in: Advertisement
Read More

USTC Masters and PhD Scholarships – Call for applications

USTC Masters and PhD Scholarships – Call for applications

in: Advertisement
Read More

UCAS Masters and PhD Scholarships – Call for applications

UCAS Masters and PhD Scholarships – Call for applications

in: Advertisement
Read More

IUCN – Current job openings

IUCN – Current job openings

in: Advertisement
Read More

China’s Universities and Research Institutes ‒ Job vacancies

China’s Universities and Research Institutes ‒ Job vacancies

in: Advertisement
Read More

World Bank Group – Current job openings

Please connect with WBG by registering your interest in career opportunities

in: Advertisement
Read More

Skyfi Labs – Learn by building cool projects

Start learning for free today

in: Advertisement
Read More

ANSO opportunities – Call for applications

Fill out an application for a master’s or PhD scholarship

in: Advertisement
Read More

TWAS opportunities – Call for applications

Fill out an application for a PhD or postdoctoral fellowship

in: Advertisement
Read More

UNV opportunities – Call for applications

Register now in United Nations Volunteers Global Talent Pool

in: Advertisement
Read More

Web of Science Academy – Call for applications

Online training supporting academics in conducting research with integrity

in: Advertisement
Read More

CENRS – Sobanukirwa imikore n'imikoresherezwe ya R

Twabateguriye amahugurwa y'igihe gito

in: Notices,advertisement
Read More

CENRS – Terms and conditions of use of the digital library

Amategeko nuburyo bwo gukoresha isomero ry'ikoranabuhanga

in: Notices,advertisement
Read More

DCCT – Ikoranabuhanga hafi yawe

Tugane tukubakire website cyangwa tuguhe ubufasha mu ikoranabuhanga

in: Advertisement
Read More