As a vector of the crayfish plague (Aphanomyces astaci), invasive crayfish pose a major threat to endemic crayfish species in Europe. But do they affect whole ecosystems and fish species as well? A comprehensive review was done using online search engines on current literature to elucidate possible crayfish effects. It showed that they have the potential to decimate benthic invertebrate populations as well as submerged plants-the first a necessary food source, the second an important part of the habitat of fish, functioning as hiding space for their fry as well as their prey. Crayfish are suspected to act as bioturbators as well, by influencing preconditions to certain algae and animals while sorting through the substrate of a river. Their long-term effects on fish so far are inconclusive. Studies on this matter showed no effect, selective impact on fish that share prey with the crayfish, as well as significantly negative effects on fish in general. In shorter examinations, invasive crayfish have proven to displace fish from shelters, putting them at a higher risk for predation. Moreover, comparisons to native crayfish species showed that these had less negative effects on fish-due to lower consumption and reproduction rates and population densities.
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 July 2021.
All research outputs
#18,432,465
of 22,835,198 outputs
Outputs from Environmental Sciences Europe
#449
of 583 outputs
Outputs of similar age
#280,827
of 389,038 outputs
Outputs of similar age from Environmental Sciences Europe
#5
of 6 outputs
Altmetric has tracked 22,835,198 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 583 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 22.0. This one is in the 3rd percentile – i.e., 3% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 389,038 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 16th percentile – i.e., 16% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 6 others from the same source and published within six weeks on either side of this one.
