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Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

The Journal of Latvian Academy of Sciences

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Volume 68, Issue 1-2 (Apr 2014)

Issues

Conceptual Model of the Long-Term Socio-Ecological Research Platform of Engure Ecoregion, Latvia

Viesturs Melecis / Māris Kļaviņš
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiòa bulv 19, Rîga, LV-1586, LATVIA
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Māris Laiviņš / Solvita Rūsiņa / Gunta Spriņģe / Jānis Vīksne / Zaiga Krišjāne
  • Faculty of Geography and Earth Sciences, University of Latvia, Raiòa bulv 19, Rîga, LV-1586, LATVIA
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Solvita Strāķe
Published Online: 2014-07-31 | DOI: https://doi.org/10.2478/prolas-2014-0001

Abstract

The article discusses the results of the national project aimed at elaboration of a conceptual integrated model of the Engure LT(S)ER (Long-Term Socio-Ecological Research) platform of Latvia. The platform represents the drainage basin of costal Lake Engure (644 km2) together with the coastal marine zone of the Gulf of Rîga. The core zone of the ecoregion is the Lake Engure Nature Park (LENP), which is a Ramsar site. The conceptual model is a slightly modified version based on the DPSIR (Drivers-Pressures-States-Impacts-Responses) concept. The socioecological system was spatially demarcated and drivers were subdivided in two groups - external and local ones. The Engure ecoregion was subdivided into seven zones or sub-regions mostly demarcated by natural geological and geographical barriers. Each zone has a specific set of drivers and pressures as well as a specific ecosystem structure and elements of biodiversity. Analysis of the governing drivers and pressures was performed separately for each sub-region during three time periods: 19th century - beginning of 20th century, period of Soviet occupation (1940-1991), and period after restoration of independence of Latvia (1991 - up to now). Characteristics of the state of ecosystems and biodiversity are given. Responses of the socioeconomic component of the socio-ecological system are represented mainly by external factors to the ecoregion, including environmental legislation and funding necessary for research and ecological management. Two alternative scenarios of the development of the Engure ecoregion are discussed: (i) depopulation and land abandonment, and (ii) intensification of agriculture, small-scale industry and building construction. In both cases the present state of ecosystems and the structure of species diversity would be subjected to significant change. Sustainable development of the ecoregion can be provided only by implementation of certain environmental management measures accompanied by long-term socio-ecological research and ecological monitoring.

Abstract in Latvian

Rakstā apskatīti nacionālā pētījumu projekta rezultāti, kuru mērķis - izstrādāt Latvijas LT(S)ER (Ilgtermiņa socioekoloģisko pētījumu) platformas - Engures ekoreģiona integrēto konceptuālo modeli. Engures ekoreģionu veido piekrastes ezera sateces baseins (644 km2) ar Rīgas līča krasta un jūras piekrastes zonu. Ekoreģiona centrālo daļu veido Engures ezera dabas parks (EEDP) - Ramsāres vieta. Konceptuālā modeļa pamatā ir DPSIR (virzošie spēki-slodzes-stāvokļi-ietekmes-rīcības) koncepcija. Socioekoloģiskā sistēma tika telpiski strukturēta un virzošie spēki iedalīti divās grupās - ārējos un lokālos. Engures ekoreģions sadalīts septiņās zonās vai apakšreģionos ar izteiktām ģeoloģiskām un ģeogrāfiskām robežām. Katrai zonai raksturīgi specifiski virzošie spēki un slodzes kā arī specifiska ekosistēmu struktūra un biodaudzveidības elementi. Analizēti katra apakšreģiona galvenie virzošie spēki un slodzes trijos laika periodos: 19. gs. - 20 gs. sākums, padomju okupācijas periods (1940.-1991. g.), periods pēc Latvijas neatkarības atgūšanas. Sniegti ekosistēmu stāvokļa un biodaudzveidības raksturojumi. Socioekonomiskās sistēmas aktīvā komponenta - cilvēka rīcības veido galvenokārt ekoreģionam ārējie faktori, tai skaitā vides likumdošana un finansu plūsmas zinātniskajiem pētījumiem un ekosistēmu apsaimniekošanai. Apskatīti divi alternatīvi Engures ekoreģiona attīstības scenāriji: 1) iedzīvotāju skaita samazināšanās un lauksaimniecības zemju aizaugšana; 2) lauksaimniecības, vietējās ražošanas uzņēmumu un būvniecības intensifikācija. Abos gadījumos ekosistēmu pašreizējais stāvoklis un sugu daudzveidības struktūra tiktu būtiski izmainīti. Reģiona ilgtspējīgu attīstību, saglabājot cilvēkam vēlamo ekosistēmu struktūru, iespējams nodrošināt, vienīgi ieviešot ekosistēmu apsaimniekošanas pasākumus, kas bāzēti uz ilgtermiņa socioekoloģisko pētījumu un ekoloģiskā monitoringa rezultātiem.

Keywords: Long-Term Ecological Research network; DPSIR concept; socio-ecological systems; Ramsar sites; biodiversity changes

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About the article

Received: 2014-04-16

Published Online: 2014-07-31

Published in Print: 2014-04-01


Citation Information: Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences., ISSN (Online) 1407-009X, DOI: https://doi.org/10.2478/prolas-2014-0001.

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© by Viesturs Melecis. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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