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Effect of human-induced environmental changes on bird diversity and abundance in natural wetlands of Southwest Ethiopia

Selamawit Negassa Chawaka UGent, Seid Tiku Mereta UGent, Peter Goethals UGent, Luc Lens UGent and Pieter Boets UGent (2017) WATERBIRDS. 40(2). p.129-143
abstract
The diversity and abundance of wetland birds have been threatened by increasing anthropogenic activities during recent decades. The objective of this study was to determine the effect of human-induced disturbance on bird species richness and abundance of natural wetlands in southwest Ethiopia. Bird surveys were performed at 56 locations during both the wet and dry seasons in 2010 and 2011. Generalized linear modeling (G) was used to correlate species richness with environmental variables. It was found that wetlands with low human disturbance were characterized by a higher richness (n > 10) of wetland dependent specialist birds (depending completely on wetlands for food and nesting) than the highly disturbed wetlands. However, for wetland-associated birds (those able to nest and feed in wetlands as well as in other habitats), there was no significant difference (P = 0.31) in species richness between disturbed and non-disturbed wetlands. The abundance of wetland dependent specialist birds was significantly affected (P < 0.001) by human disturbance, whereas the abundance of wetland associated birds was not (P = 0.39). Fifty-three percent of the variation in species richness of wetland dependent birds was explained by a combination of water depth, sludge depth, conductivity, chlorophyll a, total phosphorus, human disturbance and vegetation cover. It is recommended that anthropogenic activities should be minimized and controlled in and around these wetlands to conserve biodiversity.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
abundance, generalized linear model, human disturbance, species richness, wetland-associated birds, wetland-dependent birds, wetlands, SPECIES COMPOSITION, RIVER FLOODPLAIN, WATER DEPTH, LAND-USE, HABITAT, COMMUNITIES, CONSERVATION, MANAGEMENT, MACROINVERTEBRATE, INDICATORS
journal title
WATERBIRDS
Waterbirds
volume
40
issue
2
pages
129 - 143
Web of Science type
Article
Web of Science id
000403128000004
ISSN
1524-4695
1938-5390
DOI
10.1675/063.040.0205
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8530570
handle
http://hdl.handle.net/1854/LU-8530570
date created
2017-09-07 14:13:50
date last changed
2018-05-17 12:04:54
@article{8530570,
  abstract     = {The diversity and abundance of wetland birds have been threatened by increasing anthropogenic activities during recent decades. The objective of this study was to determine the effect of human-induced disturbance on bird species richness and abundance of natural wetlands in southwest Ethiopia. Bird surveys were performed at 56 locations during both the wet and dry seasons in 2010 and 2011. Generalized linear modeling (G) was used to correlate species richness with environmental variables. It was found that wetlands with low human disturbance were characterized by a higher richness (n {\textrangle} 10) of wetland dependent specialist birds (depending completely on wetlands for food and nesting) than the highly disturbed wetlands. However, for wetland-associated birds (those able to nest and feed in wetlands as well as in other habitats), there was no significant difference (P = 0.31) in species richness between disturbed and non-disturbed wetlands. The abundance of wetland dependent specialist birds was significantly affected (P {\textlangle} 0.001) by human disturbance, whereas the abundance of wetland associated birds was not (P = 0.39). Fifty-three percent of the variation in species richness of wetland dependent birds was explained by a combination of water depth, sludge depth, conductivity, chlorophyll a, total phosphorus, human disturbance and vegetation cover. It is recommended that anthropogenic activities should be minimized and controlled in and around these wetlands to conserve biodiversity.},
  author       = {Chawaka, Selamawit Negassa and Mereta, Seid Tiku and Goethals, Peter and Lens, Luc and Boets, Pieter},
  issn         = {1524-4695},
  journal      = {WATERBIRDS},
  keyword      = {abundance,generalized linear model,human disturbance,species richness,wetland-associated birds,wetland-dependent birds,wetlands,SPECIES COMPOSITION,RIVER FLOODPLAIN,WATER DEPTH,LAND-USE,HABITAT,COMMUNITIES,CONSERVATION,MANAGEMENT,MACROINVERTEBRATE,INDICATORS},
  language     = {eng},
  number       = {2},
  pages        = {129--143},
  title        = {Effect of human-induced environmental changes on bird diversity and abundance in natural wetlands of Southwest Ethiopia},
  url          = {http://dx.doi.org/10.1675/063.040.0205},
  volume       = {40},
  year         = {2017},
}

Chicago
Chawaka, Selamawit Negassa, Seid Tiku Mereta, Peter Goethals, Luc Lens, and Pieter Boets. 2017. “Effect of Human-induced Environmental Changes on Bird Diversity and Abundance in Natural Wetlands of Southwest Ethiopia.” Waterbirds 40 (2): 129–143.
APA
Chawaka, S. N., Mereta, S. T., Goethals, P., Lens, L., & Boets, P. (2017). Effect of human-induced environmental changes on bird diversity and abundance in natural wetlands of Southwest Ethiopia. WATERBIRDS, 40(2), 129–143.
Vancouver
1.
Chawaka SN, Mereta ST, Goethals P, Lens L, Boets P. Effect of human-induced environmental changes on bird diversity and abundance in natural wetlands of Southwest Ethiopia. WATERBIRDS. 2017;40(2):129–43.
MLA
Chawaka, Selamawit Negassa, Seid Tiku Mereta, Peter Goethals, et al. “Effect of Human-induced Environmental Changes on Bird Diversity and Abundance in Natural Wetlands of Southwest Ethiopia.” WATERBIRDS 40.2 (2017): 129–143. Print.