Long-Term and Spatial Variation in the Diversity of Littoral Benthic Macroinvertebrate Fauna in Lake Biwa, Japan

2014 ◽  
pp. 151-166 ◽  
Author(s):  
Jun-ya Shibata ◽  
Zin’ichi Karube ◽  
Yoichirou Sakai ◽  
Tomohiro Takeyama ◽  
Ichiro Tayasu ◽  
...  
Keyword(s):  
Spatial Variation ◽  
Lake Biwa ◽  
Benthic Macroinvertebrate ◽  
Macroinvertebrate Fauna

scholarly journals Long-Term Changes in the Diet of Gymnogobius isaza from Lake Biwa, Japan: Effects of Body Size and Environmental Prey Availability

PLoS ONE ◽  
2012 ◽  
Vol 7 (12) ◽  
pp. e53167 ◽  
Author(s):  
Jonathan Carlo Briones ◽  
Cheng-Han Tsai ◽  
Takefumi Nakazawa ◽  
Yoichiro Sakai ◽  
Rey Donne S. Papa ◽  
...  
Keyword(s):  
Body Size ◽  
Lake Biwa ◽  
Prey Availability ◽  
Long Term Changes

A Priori Typology-Based Prediction of Benthic Macroinvertebrate Fauna for Ecological Classification of Rivers

2008 ◽  
Vol 42 (5) ◽  
pp. 894-906 ◽  
Author(s):  
Jukka Aroviita ◽  
Esa Koskenniemi ◽  
Juho Kotanen ◽  
Heikki Hämäläinen
Keyword(s):  
A Priori ◽  
Benthic Macroinvertebrate ◽  
Ecological Classification ◽  
Macroinvertebrate Fauna

scholarly journals Using spoor and prey counts to determine temporal and spatial variation in lion (Panthera leo) density

2014 ◽  
Vol 92 (2) ◽  
pp. 97-104 ◽  
Author(s):  
D. Bauer ◽  
M. Schiess-Meier ◽  
D.R. Mills ◽  
M. Gusset
Keyword(s):  
Spatial Variation ◽  
Disease Outbreaks ◽  
Panthera Leo ◽  
African Countries ◽  
Temporal And Spatial Variation ◽  
Term Survival ◽  
Population Crash ◽  
Grazing Area ◽  
Temporal And Spatial

In many African countries, large carnivores such as lions (Panthera leo (L., 1758)) are under serious threat through conflict with people, declining prey abundance, and exposure to disease. Spoor and prey count surveys were used to determine temporal and spatial variation in lion density in Khutse Game Reserve (KGR), Botswana, and the adjacent communal grazing area. Estimated lion density in KGR for the period September 2008 – June 2010 was 41% lower than for the period June 2007 – August 2008 (1.02 vs. 1.72 lions/100 km2). Prior to this population crash in mid-2008, estimated lion density in the communal grazing area (1.21 lions/100 km2) was 30% lower than inside KGR. The relative abundance of the three most abundant, preferred prey species of lions occurring in KGR decreased from 2001 to 2008 by 50%–79%. Based on two prey biomass estimates, the lion population in KGR was below the potential carrying capacity of the habitat after the crash in mid-2008. These results suggest that there could be a human-caused population sink around KGR, which might be strong enough to threaten the long-term survival of lions in the area; particularly if this edge effect is intensified by prey depletion and disease outbreaks, which might have caused the sudden decline in the lion population.

scholarly journals Spatial variation in the structure of fish assemblages in the Vaalbos National Park, South Africa

Koedoe ◽  
1997 ◽  
Vol 40 (1) ◽  
Author(s):  
I.A. Russell
Keyword(s):  
Spatial Variation ◽  
National Park ◽  
Fish Assemblages ◽  
Abundant Species ◽  
Assemblage Structure ◽  
Length Frequency Distribution ◽  
Length Frequency ◽  
Percentage Cover ◽  
Successful Recruitment

Fish assemblages were sampled at nine sites in the lower Vaal River in the Vaalbos National Park and adjacent properties. A total of 1543 fish from 10 species was recorded. Ordination revealed spatial variation in assemblage structure, with the distinction primarily between communities in rapids and deep pools. Flow velocity, depth and percentage cover were important determinants offish assemblage structure. The length frequency distribution of abundant species indicated successful recruitment. Several differences in the species compliment compared to earlier studies were evident, including high abundance of Barbus paludinosus and Austro^lanis sclateri, and the absence of Barbus anoplus. The length-mass relationships of large cyprmids indicated long-term declines in the physical condition of fish.

scholarly journals Spatial Variation in Long-Term Trends in a Metapopulation of the Globally Threatened Aquatic WarblerAcrocephalus paludicolain Poland

2016 ◽  
Vol 51 (2) ◽  
pp. 245-256 ◽  
Author(s):  
Michał Żmihorski ◽  
Łukasz Ławicki ◽  
Dominik Marchowski ◽  
Przemysław Wylegała ◽  
Tomas Pärt
Keyword(s):  
Spatial Variation ◽  
Long Term Trends

A long-term change of benthic macroinvertebrate communities in the Cheonggye stream, a restored urban stream in Seoul, Korea

2011 ◽  
Vol 41 (6) ◽  
pp. 283-283
Author(s):  
Lak Jung Choe ◽  
Dong Gun Kim ◽  
Min Jeong Baek ◽  
Hyo Jeong Kang ◽  
Song Ji Lee ◽  
...  
Keyword(s):  
Urban Stream ◽  
Benthic Macroinvertebrate ◽  
Macroinvertebrate Communities ◽  
Term Change
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