International Seminar Experience and initiatives to reduce ... · Pond aquaculture is traditional...
Transcript of International Seminar Experience and initiatives to reduce ... · Pond aquaculture is traditional...
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Threats or opportunities? The role of pond
aquaculture in biodiversity conservation in
Latvia
Arturs Skute1, Mihails Pupins1 1 Institute of Life Sciences and
Technologies, Daugavpils
University. Parades street 1A.
International Seminar
Experience and initiatives to reduce environmental impacts and
NGO cooperation possibilities on Daugava/Dvina river basin
22-23 November 2017, Daugavpils, Latvia
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Daugava
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Latvian rivers’ basins
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Daugava’s basin
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Aquaculture – targeted cultivation of hydrobionts in
regulated environment
Pond aquaculture – targeted cultivation of hydrobionts in
the pond regulated environment
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Pond aquaculture in the Daugava’s basin in
Latvia
• Aquaculture
ponds
complexes
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Da
uga
va
Natural water flow
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Da
uga
va
Pond water flow
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Da
uga
va
Pond water flow
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Da
uga
va
Pond water flow
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Da
uga
va
Pond water flow
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Artificial
food
Clean
water
Pond
hydrobionts Chemical wastes
Hydro-chemical pollution
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Invasions
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Genetic contamination
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Ecological contamination
Native
pond
ecosystem
Aquaculture
pond
ecosystem
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Evolutional contamination
Native local evolution
before
Changed local evolution
after
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Contamination of future ?
Native future before Changed future after???
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Pond aquaculture is traditional type of aquaculture in Latvia. The studies carried
out by us over the last 10 years have shown that all the ponds used for aquaculture
in Latvia can be divided into two groups:
Traditional Ponds (TP) Farming Ponds (FP).
Pond aquaculture in Latvia
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Parameters Traditional pond
Farming pond
Area area of 0.1 – 1 ha 5 ha and more
Purpose provision of additional food for
owners
production of hydrobionts for
sale
Use for
recreation
recreation of owners recreation as a product for sale
Methods of
cultivation
extensive intensive
Function homestead pond fishery
Method of
creating
digging damming and diversion of
waters from rivers and streams
Filling precipitation and groundwater streams and rivers
Possibility of
drainage
no yes
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Parameters Traditional pond
Farming pond
Type of
aquaculture
polyculture monoculture
Productivity of
the pond
the owner does not care is the main result of work for the
owner
Motto a hobby a business
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Parameters Traditional pond
Farming pond
Genetic contamination of the local
population by the productive lines of
hydrobionts
no highly possible
Increases biodiversity in itself on the
surrounding
territory
contamination with invasive species no yes
Eutrophication of the environment no yes
Mosaic habitats increases reduces
Typical cultivated hydrobionts Carassius
carassius
Cyprinus carpio,
Tinca tinca,
Carassius auratus
The TP and FP in Latvia differ in principle according to the
described below impacts of the aquaculture on the
biodiversity conservation.
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
0
20
40
60
80
100
120Zīdītāju izplatība dīķsaimniecībās
% no dīķu saimniecībām
Mammals distribution and density in FP and
TP in Latvia
0
0,5
1
1,5
2
2,5
3Zīdītāju vidējais blīvums
0-Nekad; 1-Reti; 2- Bieži; 3-Ļoti bieži
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
0
0,5
1
1,5
2
2,5
3Putnu vidējais blīvums
0-Nekad; 1-Reti; 2- Bieži; 3-Ļoti bieži
0
20
40
60
80
100
120Putnu izplatība dīķsaimniecībās
% no dīķu saimniecībām
Birds
distribution and
density in FP
and TP in Latvia
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
CONCLUSIONS
• The results of the research showed that if the
role of TP for preserving and increasing the
biodiversity in Latvia is predominantly
positive, then the role of FP depends to a large
extent on the strategy and priorities of FP
managing.
• The dynamics of the ratio of the number and
area of ponds in Latvia over the past ten years
shows that the number of TP in Latvia
increases, while the number of FP remains
practically at the same level.
• This allows us to hope for a sustainable
conservation of biodiversity on the
background of the development of pond
aquaculture in Latvia.
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
• We thank all the scientists, organizations,
photographers, authors for the possibility
of using of their work results.
• Many photos for this lecture were found in
WEB, most of them hadn’t names of
authors or references.
• If you are the author, send please your
info and we will add the reference to you.
• If you are the author and you don’t agree
that your materials are used in this lecture,
contact me please at [email protected] .
We will remove your materials as soon as
possible.
DAUGAVPILS UNIVERSITY Institute of Life Sciences and Technologies
Department of Ecology
Thank you for
your attention!