The influence of spatial scale and habitat arrangement on diel patterns of habitat use by two lowland river fishes

Oecologia ◽  
2001 ◽  
Vol 129 (4) ◽  
pp. 525-533 ◽  
Author(s):  
David A. Crook ◽  
Alistar I. Robertson ◽  
Alison J. King ◽  
Paul Humphries
Keyword(s):  
Habitat Use ◽  
Spatial Scale ◽  
Lowland River ◽  
Diel Patterns

scholarly journals The role of season and social grouping on habitat use by Mute Swans (Cygnus olor) in a lowland river catchment

Bird Study ◽  
2013 ◽  
Vol 60 (2) ◽  
pp. 229-237 ◽  
Author(s):  
Kevin A. Wood ◽  
Richard A. Stillman ◽  
Terry Coombs ◽  
Claire Mcdonald ◽  
Francis Daunt ◽  
...  
Keyword(s):  
Habitat Use ◽  
Lowland River ◽  
River Catchment ◽  
Cygnus Olor ◽  
Social Grouping ◽  
Mute Swans

Effect of spatial scale on habitat use of Bolitotherus cornutus (Coleoptera: Tenebrionidae)

2005 ◽  
Vol 137 (2) ◽  
pp. 192-201 ◽  
Author(s):  
Sonja Teichert ◽  
Soren Bondrup-Nielsen
Keyword(s):  
Habitat Use ◽  
Spatial Scale ◽  
Betula Papyrifera ◽  
Fomes Fomentarius ◽  
Exploratory Approach ◽  
Paper Birch ◽  
Bolitotherus Cornutus ◽  
Coleoptera Tenebrionidae

AbstractThe habitat of Bolitotherus cornutus Panzer consists primarily of sporophores of the shelf fungus Fomes fomentarius (L.:Fr.) J. Kickx fil. Each sporophore is discrete and often several are present on a single dead log or standing snag, especially of paper birch (Betula papyrifera Marsh.). An exploratory approach was used to examine habitat use at three scales (the single sporophore, a single log supporting up to several sporophores, and a group of logs supporting sporophores) by modeling incidence of adult B. cornutus. Sporophore volume and decay were important for the beetles at all scales. Patches containing a variety of states of sporophores from alive to dead and decomposing are probably most suitable to B. cornutus. Results are compared with those for the related European beetle Bolitophagus reticulatus (L.), which is similar ecologically and also occupies F. fomentarius sporophores.

scholarly journals Spatial Scale Dependence of Rodent Habitat Use

1999 ◽  
Vol 80 (2) ◽  
pp. 421-429 ◽  
Author(s):  
E. E. Jorgensen ◽  
S. Demarais
Keyword(s):  
Habitat Use ◽  
Spatial Scale ◽  
Scale Dependence

Resource use by the two-toed sloth (Choloepus hoffmanni) and the three-toed sloth (Bradypus variegatus) differs in a shade-grown agro-ecosystem

2014 ◽  
Vol 31 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Jorge E. Mendoza ◽  
M. Zachariah Peery ◽  
Gustavo A. Gutiérrez ◽  
Geovanny Herrera ◽  
Jonathan N. Pauli
Keyword(s):  
Habitat Use ◽  
Tropical Forest ◽  
Spatial Scale ◽  
Resource Use ◽  
Tree Species ◽  
Habitat Type ◽  
Population Viability ◽  
Resource Specialization ◽  
Bradypus Variegatus

Abstract:Although resource specialization occurs along a continuum, species are often defined as either specialists or generalists. In general, specialists are more prone to extinction than generalists and, thus, are often the first species to be lost when habitats are modified. The two-toed sloth (Choloepus hoffmanni) and the three-toed sloth (Bradypus variegatus) are arboreal herbivores distributed across the Neotropics. The two-toed sloth is considered a generalist while the three-toed sloth is more specialized. Both species inhabit shade-grown agro-ecosystems but, at least at one study site, only the two-toed sloth was viable. To quantify specialization in sloth species and explore how it influences population viability, we characterized the resource use for 68 adult and 12 subadult sloths across 3 y. The two-toed sloth used 14 tree species relatively uniformly across habitats, while the three-toed sloth largely depended on only two species of tree regardless of habitat type. Both species selected for patches of intact tropical forest, strongly avoided monocultures regardless of spatial scale and generally used cocoa similarly in proportion to availability. However, the sloth species differed in their use of cattle pastures, with the two-toed sloth selecting for pastures and the three-toed sloth avoiding them. Overall, the two-toed sloth exhibited greater plasticity in tree and habitat use, which is likely contributing to its enhanced resilience within this modified agro-ecosystem.

Suitability criteria analyzed at the spatial scale of redd clusters improved estimates of fall chinook salmon (Oncorhynchus tshawytscha) spawning habitat use in the Hanford Reach, Columbia River

2000 ◽  
Vol 57 (8) ◽  
pp. 1636-1646 ◽  
Author(s):  
David R Geist ◽  
Julia Jones ◽  
Christopher J Murray ◽  
Dennis D Dauble
Keyword(s):  
Habitat Use ◽  
Spatial Scale ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Columbia River ◽  
Water Velocity ◽  
Point Pattern ◽  
Spawning Habitat ◽  
Cluster Location ◽  
Hanford Reach

We improved our predictions of fall chinook salmon (Oncorhynchus tshawytscha) habitat use by analyzing spawning habitat at the spatial scale of redd clusters. Spatial point pattern analyses indicated that redd clusters in the Hanford Reach, Columbia River, were consistent in their location from 1994 to 1995. Redd densities were 16.1 and 8.9 redds·ha-1 in 1994 and 1995, respectively, and individual redds within clusters were usually less than 30 m apart. Pattern analysis also showed strong evidence that redds were uniformly distributed within the clusters where interredd distances ranged from 2 to 5 m. Redd clusters were found to occur predominantly where water velocity was between 1.4 and 2 m·s-1, water depth was 2-4 m, and lateral slope of the riverbed was less than 4%. This habitat use represented a narrower range of use than previously reported for adult fall chinook salmon. Logistic regression analysis determined that water velocity and lateral slope were the most significant predictors of redd cluster location over a range of river discharges. Overestimates of available spawning habitat lead to nonachievable goals for protecting and restoring critical salmonid habitat. Better predictions of spawning habitat may be possible if cluster-specific characteristics are used.

scholarly journals Habitat use and preference of adult pike (Esox lucius L.) in an anthropogenically impacted lowland river

Limnologica ◽  
2017 ◽  
Vol 62 ◽  
pp. 151-160 ◽  
Author(s):  
I.S. Pauwels ◽  
P.L.M. Goethals ◽  
J. Coeck ◽  
A.M. Mouton
Keyword(s):  
Habitat Use ◽  
Esox Lucius ◽  
Lowland River ◽  
Pike Esox Lucius
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