What methods, what groups of organisms to use in each case? What is in scientific literature on this matter?
Question with the correct translation of results from one timeline on another. How to provide the correct transition?
The type of monitoring and timing is best designed for the specific circumstance with some understanding of system function. Since you mentioned organisms, on research gate, I have uploaded a report we did in 1983 in monitoring pesticide treatments by aerial spraying of pesticides and monitoring spills (the report with a moth on the cover). We designed the monitoring to fit the project. If the project involved conversion of forestland to agriculture and industry, the type of and length of monitoring would be different, since the changes would be a result of many activities and the continuation of impact. Another type of monitoring might be a surveillance level with seasonal collection. In another instance, I set to monitor conditions and frequency of salinity or brackish impact into freshwater system affected by low river flow releases from upstream dam, resulting in intermittent entry during periods of high tide (new, full moons or high directional winds). I do not have papers to send, but the internet should have many examples, and also you might try searching on your topic in research gate. If you have a specific title, an internet will often produce result.
Depending on your objective, you have to set your monitoring time. It may be diurnal, monthly, seasonal and might be of many years.
Ahmed, many thanks! My object - zooplankton. But it is good on seasonal or annual temporary scales. For a daily scale, for example, it is necessary to choose other community, population, an organism or parameter of the environment.
William, thanks! I downloaded this project with a moth (1983). I will study...
Dear William,
Advantage of using biomonitoring is that these technics are integrative.
If for example you use biological indexes like macroinvertebrates or diatoms, you can do the analysis twice a year or on a more frequent basis. It is very important to check the flow of the river and to avoid high water or low water flow. As you will have in these specific river regime artefacts coming from hydric stress.
For example, a bio survey done twice a year (end of spring,beginning of automn) could be interesting. On the same logic, you must avoid winter were your organims are dormant.
Hope it will help you,
Hello Nikolay,
I recommend you check out the guidance on the CADDIS, particulalry the one on matching. This is found at: https://www3.epa.gov/caddis/da_considerations_2.html
Philippe, thanks! But happens it is necessary to trace also daily rhythmics of biological processes or factors of the environment (and to reveal violations in them). Sampling two times a year allows us to estimate indicators for concrete year. But violations can be on shorter time interval. And with such approach we will not notice them.
Hi Nikolay. There is a lot of literature on this, but just think on the goals of the monitoring. You need to select organisms that respond to the main impacts suffered by the monitored ecosystem, then you can evaluate the effect of these impacts. Thus, the frequency of sampling should be adjusted according to the time iof recovery of the type of organisms, this is, if an impact has altered this part of the biological community, you will only detect the effects of this impact on these taxa (or part of the community) if measured during the time of recovery. This should also be linked to the frequency of the impacts. Many other aspects are also important, for instance, mobile elements of the community, such fishes, tend to escape the impacted zone, but can come back quickly after the recovery of the habitat, whereas the recovery of non-mobile members of the community would sometimes require more time (also modulated by the lenght of their life cycle).
Best
Antonio
Antonio, many thanks! What articles you will advise to study?
Yours faithfully,
Nikolay
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