Results 81 to 90 of about 15,094 (230)
The introduced signal crayfish and native noble crayfish have different effects on sublittoral macroinvertebrate assemblages in boreal lakes [PDF]
Freshwater Biology, 2015 Summary We investigated differences in the abundance, community composition and taxon richness of sublittoral macroinvertebrates in boreal lakes containing introduced invasive signal crayfish (Pacifastacus leniusculus) or native noble crayfish (Astacus astacus).
Ruokonen, Timo +5 more
openaire +2 more sources
Wildlife Biology, EarlyView.Sympatric bat species can co‐exist and avoid interspecific competition via niche differentiation e.g. diet. Detecting dietary differences can be achieved by comparing dietary niches of sympatric and allopatric populations. If dietary overlap is higher in sympatry versus allopatry, co‐occurrence may be altering the dietary niche of the species.
Heather Wood +3 more
wiley +1 more source
Ecology and Evolution, 2021 Biological invasions are a serious problem in natural ecosystems. Local species that are potential prey of invasive alien predators can be threatened by their inability to recognize invasive predator cues.
Andrzej Antoł, Szymon Sniegula
doaj +1 more source
Burrowing behaviour of signal crayfish, Pacifastacus leniusculus (Dana), in the River Great Ouse, England [PDF]
, 1994 Observations were made on crayfish burrows in five locations on the Great Ouse River. The burrow densities and the relative abundance of crayfish were observed.
Guan, Rui-Zhang
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Mitochondrial function predicts dominance status in brown trout
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract In social hierarchies, winning contests confers better access to food, shelter and reproductive opportunities. Clear dominance relationships are often apparent even when opponents are matched for experience, age, size and other obvious characteristics.
Darryl McLennan +5 more
wiley +1 more source
Knowledge and Management of Aquatic Ecosystems, 2016 Management of invasive species requires assessment of their effects on recipient ecosystems. However, impact assessment of invasive species commonly lacks a long-term perspective which can potentially lead to false conclusions.
Ruokonen T. J. +2 more
doaj +1 more source
Additional crayfish survey of Checkley Brook, Hollywood End Brook and Black Brook (Goyt) 1999 [PDF]
, 1999 This is the report on the Additonal Crayfish Survey of Checkley Brook, Hollywood End Brook and Black Brook from 1999 by the Environment agency. The aim of the 1999 survey was to obtain a more complete picture of the crayfish distribution in those areas.
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Shelter Occupancy by Mixed-Species Pairs of Native Signal Crayfish and Non-Native Red Swamp Crayfish Held in Enclosures [PDF]
Journal of Freshwater Ecology, 2009 ABSTRACT Sheltering ability does not appear to confer an advantage to non-native red swamp crayfish (Procambarus clarkil) in a small, western Washington lake where the invader outnumbers the native signal crayfish (Pacifastacus leniusculus.) When paired with similar-sized non-native P. clarkii, P.
Karl W. Mueller, Leo R. Bodensteiner
openaire +1 more source
Assessing the Presence, Pattern, and Environmental Correlates of Seasonal Skin Thickening in Anurans
Integrative Zoology, EarlyView.Histological sections, like that of the ventral pectoral skin of Lithobates pipiens, were measured to assess variation in skin thickness throughout the year in three North American anuran species. After correcting for individual body size, we test whether skin thickness changes throughout the year and which factors (environment or life history) explain
Collin S. VanBuren +3 more
wiley +1 more source
The continuing spread of Pacifastacus leniusculus in Carinthia (Austria) [PDF]
Knowledge and Management of Aquatic Ecosystems, 2009 Crayfish plague and introductions of non-indigenous freshwater crayfish species (NICS) have had major consequences for the survival of autochthonous crayfish populations in Europe.
M. Weinländer, L. Füreder
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