Ecosytem goods and services of extensive fishponds

Éva Kerepeczki

Objectives

• The original presentiation was gives for aquaculture producers, lecturers and students to introduce the definition „ecosystem goods and services”

• To initiate joint thinking on survey and maintanance of EGS of extensive fishponds

Nature: the whole biosphere

Ecosystem: (biogeocenosis) the

together living communities with

their physical environment

Environment: the complexity of physical and

biological factors affecting people

Framework of integrated assessment and valuation of ecosystem fuctions, goods and services

(de Groot et al, 2002)

Regulationessential ecological processes and life support system

Functions Ecosystem processes and components

Goods and services

Gas regulation Role of ecosystem in bio-geochemical cycles (CO2/O2 balance, ozon layer)

Maintenance of air quality

Climate regulation Influence of land cover and biol. Mediated processes on climate

Microclimate

Water supply Filtering retention and storage of fresh water

Provision of water for consumptive use (irrigation, industry)

Regulationessential ecological processes and life support system

Functions Ecosystem processes and components

Goods and services

Nutrient regulation Storage and recycling of nutrients

Maintenance of healthy sediment and productive pond ecosystems

Waste treatment Removal and breakdown of xenic nutrients and compounds

Microclimate

Water supply Filtering retention and storage of fresh water

Provision of water for consumptive use (irrigation, industry)

Regulationessential ecological processes and life support system

Functions Ecosystem processes and components

Goods and services

Nutrient regulation Storage and recycling of nutrients

Maintenance of healthy sediment and productive pond ecosystems

Waste treatment Removal and breakdown of xenic nutrients and compounds

Sedimentation of pollutants, decomposition and uptake (53% of TN, 74% of TP was retained in ex. fishponds)Water quality improvement

Biological control Population control through trophic-dynamic interactions

Control of parasites

Habitatrefuge and reproduction habitat of wild species

(conversation of biodiversity)

Functions Ecosystem processes and components

Goods and services

Refugium Suitable living space for wild species

Maintenance of biodiversityMaintenance of stocked fish

Nursery function Suitable reproduction habitat

Hunting, gathering of fish, game, fruits

Production functionsprovision of natural resources

Functions Ecosystem processes and components

Goods and services

Food Conversion of solar energy into edible plants and animals

Small-scale subsistens farming and aquaculture

Row materials Biomass for human construction and other uses

Building and manufacturing (reed, wood)BioenergyBiopolymers

Production functionFunctions Ecosystem processes and

componentsGoods and services

Genetic resources Genetic material and evolutions in wild plants and animals

Improve resistance and production possibilities

Medical resources Variety in biochemical subtances and other medicinal uses of natural biota

Drogs and pharmaceuticalsTest organismsFunctional healthy food

Ornamental recources Variety of biota with ornamental use

Ornamental fish, decoration etc.

Information function(maintenance of human health through cognitive development, spiritual

enrichment, recreation)

Functions Ecosystem processes and components

Goods and services

Aesthetic information Attractive landscape features

Enjoyment of scenery

Recreation Variety of landscape with recreational use

Ecotourism, outdoor sport, hunting, angling

Cultural and artistic information

Natural features with cultural and artistic value

Use of fish and pond motive in books, films, paintings, folklore, etc.

Science and education Variety in nature with scientific and educational value

Object of scientific research, education

Spiritual and historic information

Variety of nat. features with spiritual and historic value

Heritage value of pond-type ecosystem, fisheries tradition

Valuation of ecosystem goods and services

Identification, desciption

Indicator selection

Assessment

Valorisation €

Elaboration of technology for maintenance of EGS