Results 31 to 40 of about 6,247 (262)

Deterioration of the Littoral–Benthic Ecosystem Following Recent Expansion of Signal Crayfish (Pacifastacus leniusculus) in the World’s Clearest Large Lake

Ecosystems, 2023
Some biological invasions can result in algae blooms in the nearshore of clear lakes. We studied if an invasive crayfish ( Pacifastacus leniusculus ) modified the biomass and community composition of benthic macroinvertebrates and therefore led to a ...
F. Scordo, S. Girdner, Aldo San Pedro, Carina Seitz, S. Chandra   +4 more
semanticscholar   +1 more source

Observation of museum specimens of the genus Pacifastacus Bott, 1950 (Decapoda: Astacidae)

Nauplius, 2018
Until recently, three subspecies had traditionally been recognized in the astacid species Pacifastacus leniusculus (Dana, 1852): Pacifastacus leniusculus leniusculus, Pacifastacus leniusculus klamathensis (Stimpson, 1857), and Pacifastacus leniusculus ...
Tadashi Kawai
doaj   +1 more source

Unraveling multipredator impacts in salmon-bearing rivers using quantitative DNA metabarcoding. [PDF]

Ecol Appl
Abstract Ecological impacts of invasive species are mounting as their numbers and geographic extent continue to increase. Across extensive parts of their range, Pacific salmon (Oncorhynchus spp.) smolts face an expanding gauntlet of nonnative predators during their seaward migration.
Winkowski JJ, Crosson LM, Olden JD.
europepmc   +2 more sources

Nikkelin kertyminen täplärapuun (Pacifastacus leniusculus) kahdessa eri lämpötilassa

, 2017
Nickel accumulation in signal crayfish (Pacifastacus leniusculus) at two different temperatures. Metal emissions caused by industrial mining activities are a world-wide environmental problem. In these emissions metals are often in the form of sulfide or chloride which are readily bioavailable to biota.
Sami Ojala
openalex   +2 more sources

Pharmaceuticals in Municipal Wastewater – Two Case Studies of Uptake in Fish and Crayfish (Pacifastacus leniusculus) in Aquaria Experiment and In-field Sampling

Aplinkos tyrimai, inzinerija ir vadyba / Environmental Research, Engineering and Management, 2023
In the receiving areas of effluents from municipal wastewater treatment plants (WWTPs), aquatic organisms are threatened by adverse effects due to exposure to pharmaceutical residues.
H. Waldetoft, Bahare Esfahani, Tomas Viktor, O. M. Karlsson   +3 more
semanticscholar   +1 more source

Understanding the threats posed by non-native species: public vs. conservation managers. [PDF]

, 2013
Public perception is a key factor influencing current conservation policy. Therefore, it is important to determine the influence of the public, end-users and scientists on the prioritisation of conservation issues and the direct implications for policy ...
A Bremner, AD Middleton, AT Knight, C MacNeil, Carlos Garcia de Leaniz, CJ Loucks, D Andreou, D Andreou, D Andreou, D Andreou, D Burnard, Dean Burnard, Demetra Andreou, F Gherardi, GH Copp, GH Copp, GL Harvey, J Turgeon, J. Robert Britton, JLC Stinchcombe, JP Bailey, JR Britton, M Majerus, MJ Novacek, PJ Seddon, RE Gozlan, RE Gozlan, RE Gozlan, RE Gozlan, RE Gozlan, RK Paley, Rodolphe E. Gozlan, RZ Guan, S Bertolino, SJ Manchester, SK Jacobson, TB Lauber, TH Tear, VM Stankovic, WL Linklater   +39 more
core   +6 more sources

Diel turbidity cycles in a headwater stream: evidence of nocturnal bioturbation? [PDF]

, 2016
Purpose: A small number of recent studies have linked daily cycles in stream turbidity to nocturnal bioturbation by aquatic fauna, principally crayfish, and demonstrated this process can significantly impact upon water quality under baseflow conditions ...
A Kouba, A Savitzky, AHW Beusen, DA Nimick, DH Bubb, DJ Evans, DM Holdich, Faye N. Outram, FN Outram, GL Harvey, GS Bilotta, J Hilton, J Thompson, JN Quinton, JV Loperfido, Kevin M. Hiscock, KM Hiscock, L Crawford, M Meybeck, MF Johnson, MF Johnson, O Navratil, O Navratil, Richard J. Cooper, RJ Cooper, RJ Cooper, RZ Guan, S Rice, SC Sherriff, SJ Halliday, ST Harrington, WA House   +31 more
core   +1 more source

The signal crayfish Pacifastacus leniusculus (Dana, 1852) (Crustacea, Decapoda) is threatening the near future of Margaritifera margaritifera Linnaeus, 1758 (Bivalvia, Unionoida) in the Negro River (NW Zamora, Spain)

Animal Biodiversity and Conservation, 2023
We studied the incidence of the signal crayfish on a population of Margaritifera margaritifera in the Negro River (Zamora, Spain) during the summers of 2019 to 2022.
J. Morales
semanticscholar   +1 more source

DETERMINATION OF THE RATE OF GROWTH OF PACIFASTACUS LENIUSCULUS IN LAKE POBŁĘDZIE, USING POLYMODAL LENGTH FREQUENCY DISTRIBUTION ANALYSIS

Knowledge and Management of Aquatic Ecosystems, 2006
This study estimated the rate of growth of Pacifastacus leniusculus using the sizefrequency data analysis in Lake Pobłędzie NE Poland. A sample of 1,342 individuals (645 males and 697 females) was collected with baited traps in late September 2002.
ŠMIETANA P., KRZYWOSZ T.
doaj   +1 more source

Environmental DNA‐based methods detect the invasion front of an advancing signal crayfish population

Environmental DNA, 2022
Aquatic invasive species, such as the signal crayfish (Pacifastacus leniusculus), present a major threat to freshwater ecosystems. However, these species can be challenging to detect in recently invaded habitats.
Jack A. Greenhalgh, Rupert A. Collins, Duncan E. Edgley, Martin J. Genner, Jan Hindle, Gareth Jones, Lesley Loughlin, Maire O’donnel, Michael J. Sweet, Richard W. Battarbee   +9 more
doaj   +1 more source