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habitat heterogeneity

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Journal Article
Aquatic Ecosystem Health & Management (2009) 12 (4): 364–374.
Published: 30 November 2009
... with habitat heterogeneity: Dam side is the main basin of the lake with open deep pelagic zone, and Petang River is a small shallow flowing stream bed comprised of cobbles and boulders. Copyright © AEHMS 2009 standing dead trees tropical reservoir Lake Kenyir Periphyton, being an important...
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Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (3): 331–341.
Published: 03 July 2018
... threat to the integrity of valuable and vulnerable coastal habitats within the AOC. As such, efforts have been made to partially rehabilitate two slips, Peter and Spadina, situated along the north-western portion of the Inner Harbour ( Figure 1 ) by increasing in-water habitat heterogeneity (i.e...
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Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2004) 7 (1): 59–72.
Published: 01 January 2004
... communities according to their respective ecological interests for avifauna and flatfishes, local socio-economical preoccupations or recreational activities carried out in the basin. Copyright © AEHMS 2004 tidal power station long-term changes habitat heterogeneity Changes in the structure...
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Journal Article
Aquatic Ecosystem Health & Management (2014) 17 (4): 357–364.
Published: 02 October 2014
... dominated by rocks, cliffs and hard substrates. The area was selected in order to have heterogeneous study areas containing the majority of habitats that can be found in lakes. Figure 1. Map of the study area. Shaded areas were sampled using small underwater detonations and PAS electrofishing. Gill...
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Journal Article
Aquatic Ecosystem Health & Management (2017) 20 (4): 445–456.
Published: 02 October 2017
... with decreased riparian cover. In areas with higher levels of intact vegetation within 10 m of the stream, insectivorous species percent composition was greatest, which suggested that in-stream habitat conditions were likely more heterogeneous. The insectivorous species are specialists, and habitat...
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Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (1): 29–40.
Published: 01 January 2003
... and a range of wetting and drying patterns that provide a heterogeneity of habitats for the biota (e.g., fish, in- vertebrates, plankton, turtles, plants, birds, microbes) (Brock and Jarman, 2000). A heterogeneous pattern of wetlands enables resilience for the wetland biota at the landscape scale...
Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (4): 393–400.
Published: 01 December 2001
.... Currently, a joint Natural Environment Research Council-FRS project is using the stream to test a model Ruxton et al., 1999 of interactions between spatio-temporal habitat heterogeneity, dominance hier- archies, population densities and growth of juvenile salmon. Other studies use the stream to examine...
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (2): 119–129.
Published: 01 April 2003
... observed probably involve causal links, although habitat effects and other factors may also be important. Classification of sites by cluster analysis using biological data and use/impact data separately revealed considerable environmental heterogeneity. The lack of clear geographical patterns contrasts...
Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (1): 36–41.
Published: 10 March 2008
... quality ( Nkotagu, 2005 ). Lake margin habitats adjacent to areas of extensive deforestation are subject to rapid pulses of sediment erosion, with consequences that may include reduction in habitat heterogeneity from siltation, increased near shore inputs of soil nutrients, reduction in light penetration...
Journal Article
Aquatic Ecosystem Health & Management (1998) 1 (1): 25–35.
Published: 01 January 1998
.... Biotope mapping Townsend and Hildrew (1994) describe the spa- tial and temporal aspects of habitat heterogeneity as a basis for predicting biological communities. One objective, therefore, of biotope mapping is to describe and quantify the spatial and temporal dis- tribution of biotopes over a range...
Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (4): 401–412.
Published: 01 December 2001
...Y. Souchon; P. Keith Abstract Characteristics of French water bodies and fish fauna are described with special reference to physically altered streams. Recent researches on fish physical habitat have produced new insights on: models of probability of fish distributions at a watershed scale, fish...
Journal Article
Aquatic Ecosystem Health & Management (2009) 12 (3): 320–329.
Published: 24 September 2009
..., including site area, disturbance regime, habitat heterogeneity, and landscape connectivity can influence the number and types of species that colonize a constructed wetland ( Zedler, 2003 ). Other features, such as basin morphology and influent water quality, are likely to influence biodiversity and also...
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Journal Article
Aquatic Ecosystem Health & Management (2000) 3 (1): 1–21.
Published: 01 January 2000
... are severely phosphorus deficient. Certainly few ever support large crops of phytoplankton. Horizontal heterogeneity sometimes permits enhanced production in shallow bays or behind thermal bars and occasional blooms develop under conditions of near-surface stratification. An assessment of published information...
Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (4): 463–479.
Published: 01 December 2006
.... (2004) focused mainly on open and protected embayments of Lake Huron (although two inland protected wetlands were included in Burton et al., 2002 ). Since habitat characteristics (i.e., organic sediment depth, vegetation community composition and habitat heterogeneity) vary among coastal wetland...
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Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (3): 335–351.
Published: 25 August 2008
...-IBI scores were calculated for all sites, we noticed that several sites scored poorly due to naturally low habitat heterogeneity, but our a priori expectations based on landuse and other anthropogenic influences suggested that these sites were relatively unimpacted. For this reason, we used three CA...
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Journal Article
Aquatic Ecosystem Health & Management (2017) 20 (1-2): 71–85.
Published: 03 April 2017
... patterns appears to be central to the maintenance of habitat heterogeneity and species diversity. The Ken and Betwa rivers traverse through varied catchments, substratum, and flow regimes, hence the present findings also corroborate the above studies. Table 2. Relative abundance of fish species...
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Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (4): 413–421.
Published: 01 December 2001
... by aquaculture. Projects have been launched in Finland since the 1970 s to restore the rivers dredged and channelised for log transport. The goal is to generate a heterogenous stream habitat, aiming at the well-being of salmonid fishes and their food organisms (Laasonen et al., 1998; Yrjänä, 1998). The results...
Journal Article
Aquatic Ecosystem Health & Management (2015) 18 (2): 232–239.
Published: 03 April 2015
... of the presence or absence of some fish species in river reach due to high mesohabitat type heterogeneity. This implies that fish distribution is also driven by wider habitat area than the mesohabitat (Dunbar, 2008 ). None of the aforesaid studies used secondary data. Using secondary data to develop...
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Journal Article
Aquatic Ecosystem Health & Management (2005) 8 (2): 147–157.
Published: 01 April 2005
... the values estimated for the open waters implying the gulf had better water quality than the main lake. The gulf mean (± standard error) species heterogeneity values ranged from 0.7 ± 0.2 to 1.1 ± 0.1 whereas in open waters (except station 54) the values were 0.07 to 0.2 ± 0.05. This could be attributed...
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Journal Article
Aquatic Ecosystem Health & Management (2021) 24 (2): 33–42.
Published: 01 April 2021
... to species abundances. Immature individuals of non-native and native trout used similar habitat conditions, but they differed in using habitats at adult stage. Our results show a competitive dominance of Brown Trout in terms of higher abundance and maximum space utilization that highlight an urgent action...
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