I wonder if there are any methods to measure the health or exploitation level of freshwater fish fauna in European temperate rivers. I think of an index like Large Fish Index (LFI) but suitable for freshwater fish stocks.
The spawning potential ratio is a metric of over-exploitation and sustainability that is commonly used in commercial fishes stock assessment. But requires a bit of modeling to estimate. The large fish index that you mention may be a good on but requires you to know what the unexploited size/age structure is. What data do you have available to you?
Dear Dan,
I have no data at the moment, I am just planning a research to describe the exploitation level of the fish stock in the River Tisza in Hungary. This would be a side-topic, my main goal is to find the answer how the floodplain contributes to the spawning success of the fish fauna in a highly regulated temperate river.
The option you wrote above sounds interesting, could you recommend me publications about it?
Hi Roland,
The following paper is the one that most cited for spawning potential ratio....
Goodyear, C. P. 1980. Compensation in fish populations. Pages 253–280 in C. H. Hocutt and J. R. Stauffer, editors. Biological monitoring of fish. D. C. Heath, Lexington, Massachusetts.
Some other papers that demonstrate using the metric are.....
Jeffrey W. Slipke , Allen D. Martin , John Pitlo Jr. & Michael J. Maceina (2002) Use of the Spawning Potential Ratio for the Upper Mississippi River Channel Catfish Fishery, North American Journal of Fisheries Management, 22:4, 1295-1300, DOI: 10.1577/1548-8675(2002)0222.0.CO;2
https://www.researchgate.net/publication/256196477_Evaluation_of_population_decline_and_fishing_sustainability_of_the_endangered_Australian_freshwater_fish_Macquaria_australasica?ev=prf_pub
If estimating exploitation rate is new to you, you can read a summary of how to go about doing this via a tagging study on my blog......
http://dgwinn.wordpress.com/2014/03/10/estimating-the-uncertainty-in-exploitation-rates-using-parametric-bootstrapping/
Hope this is helpful!
Article Evaluation of population decline and fishing sustainability ...
- Badges
- Science topic
- Similar topics
- Geoscience
- Asia
- India