Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2005.2.04
C. Coulianos
{"title":"Annotated checklist and distribution of the true bugs (Hemiptera-Heteroptera) of Estonia","authors":"C. Coulianos","doi":"10.3176/biol.ecol.2005.2.04","DOIUrl":"https://doi.org/10.3176/biol.ecol.2005.2.04","url":null,"abstract":"","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114076174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2001.4.03
I. Kotta, J. Kotta
Vertical migrations of Mysis mixta, M. relicta, and Neomysis integer were studied in the north-eastern part of the Gulf of Riga during May-September 1999. All three mysid species performed diel vertical migrations. These migrations were more intense in late summer and autumn than in spring and early summer. The proportion of juveniles and small-sized adults (< 11 mm) in the vertical migrations was higher than that of adults. Usually N. integer appeared in the water column first in the evening, followed later by Mysis spp. Both Mysis spp., often referred to as cold stenotherms, were found in high abundance in the surf ace waters in spite of very strong temperature gradients.
{"title":"VERTICAL MIGRATIONS OF MYSIDS IN THE GULF OF RIGA","authors":"I. Kotta, J. Kotta","doi":"10.3176/biol.ecol.2001.4.03","DOIUrl":"https://doi.org/10.3176/biol.ecol.2001.4.03","url":null,"abstract":"Vertical migrations of Mysis mixta, M. relicta, and Neomysis integer were studied in the north-eastern part of the Gulf of Riga during May-September 1999. All three mysid species performed diel vertical migrations. These migrations were more intense in late summer and autumn than in spring and early summer. The proportion of juveniles and small-sized adults (< 11 mm) in the vertical migrations was higher than that of adults. Usually N. integer appeared in the water column first in the evening, followed later by Mysis spp. Both Mysis spp., often referred to as cold stenotherms, were found in high abundance in the surf ace waters in spite of very strong temperature gradients.","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115199937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.1998.4.05
S. Laha, Debbie-Ann P. Bramwell
{"title":"MICELLE-WATER PARTITIONING OF PHENANTHRENEIN AQUEOUS SURFACTANT SOLUTIONS","authors":"S. Laha, Debbie-Ann P. Bramwell","doi":"10.3176/biol.ecol.1998.4.05","DOIUrl":"https://doi.org/10.3176/biol.ecol.1998.4.05","url":null,"abstract":"","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115469154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2000.3.04
H. Timm
{"title":"DISTRIBUTION OF STONEFLIES (INSECTA: PLECOPTERA) IN ESTONIA","authors":"H. Timm","doi":"10.3176/biol.ecol.2000.3.04","DOIUrl":"https://doi.org/10.3176/biol.ecol.2000.3.04","url":null,"abstract":"","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124446315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2004.3.02
A. Erm, T. Soomere
. Wake waves from fast ferries create significant changes in the optical parameters of sea water in the near-bottom layer with a thickness of about 1 m in coastal areas of Tallinn Bay with depths of about 2–5 m. The suspended matter remains in the water column for about 5 min. Rough quantitative estimates, based on the wave-induced increase of the suspended matter in the water column per unit of bottom of the coastal area (about 1 g m –2 ) suggest that the bulk influence of fast ferry traffic in Tallinn Bay may result in an annual loss of the order of 100 L of fine sediments from each metre of the coastal line.
． 在塔林湾沿海深度约为2 ~ 5 m的近底层，快船尾流对厚度约为1 m的海水光学参数产生了显著的影响。悬浮物在水柱中停留约5分钟。根据波浪引起的每单位沿海地区底部水柱中悬浮物的增加(约1 g m -2)，粗略的定量估计表明，塔林湾快速渡轮交通的大量影响可能导致每年从海岸线每米损失100 L左右的细沉积物。
{"title":"Influence of fast ship waves on the optical properties of sea water in Tallinn Bay, Baltic Sea","authors":"A. Erm, T. Soomere","doi":"10.3176/biol.ecol.2004.3.02","DOIUrl":"https://doi.org/10.3176/biol.ecol.2004.3.02","url":null,"abstract":". Wake waves from fast ferries create significant changes in the optical parameters of sea water in the near-bottom layer with a thickness of about 1 m in coastal areas of Tallinn Bay with depths of about 2–5 m. The suspended matter remains in the water column for about 5 min. Rough quantitative estimates, based on the wave-induced increase of the suspended matter in the water column per unit of bottom of the coastal area (about 1 g m –2 ) suggest that the bulk influence of fast ferry traffic in Tallinn Bay may result in an annual loss of the order of 100 L of fine sediments from each metre of the coastal line.","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122293347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.1998.1.02
U. Lips, L. Mägi
{"title":"BUDGET COMPONENTS OF WATER, SALT, AND NUTRIENTS IN THE GULF OF RIGA IIN 1993–1995; pp. 14–31","authors":"U. Lips, L. Mägi","doi":"10.3176/biol.ecol.1998.1.02","DOIUrl":"https://doi.org/10.3176/biol.ecol.1998.1.02","url":null,"abstract":"","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128524434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2006.3.03
Tiiu Roovere, A. Lopp, T. Reintamm, A. Kuusksalu, Evelyn Richelle-Maurer, M. Kelve
Samples of freshwater sponges (Porifera, Demospongiae, Haplosclerida, suborder Spongillina) were collected at three sites in South Estonia in the Sulaoja and Vohandu rivers. A molecular approach based on the sequencing of the extended D3 domain of the 28S rDNA was used for the confirmation of the identity of sponge species. The DNA analysis showed the presence of three spongillid species in Estonia: Ephydatia fluviatilis, Ephydatia muelleri, and Spongilla lacustris. Identification of the samples by classical morphological studies of their skeleton spicules using scanning electron microscopy was performed in parallel.
{"title":"Freshwater sponges in Estonia: genetic and morphological identification","authors":"Tiiu Roovere, A. Lopp, T. Reintamm, A. Kuusksalu, Evelyn Richelle-Maurer, M. Kelve","doi":"10.3176/biol.ecol.2006.3.03","DOIUrl":"https://doi.org/10.3176/biol.ecol.2006.3.03","url":null,"abstract":"Samples of freshwater sponges (Porifera, Demospongiae, Haplosclerida, suborder Spongillina) were collected at three sites in South Estonia in the Sulaoja and Vohandu rivers. A molecular approach based on the sequencing of the extended D3 domain of the 28S rDNA was used for the confirmation of the identity of sponge species. The DNA analysis showed the presence of three spongillid species in Estonia: Ephydatia fluviatilis, Ephydatia muelleri, and Spongilla lacustris. Identification of the samples by classical morphological studies of their skeleton spicules using scanning electron microscopy was performed in parallel.","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128498098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2003.2.04
H. Kukk, T. Paalme
{"title":"Comparison of net primary production rates of Pilayella littoralis (L.) Kjellm. and other dominating macroalgal species in Kõiguste Bay, northeastern Baltic Sea","authors":"H. Kukk, T. Paalme","doi":"10.3176/biol.ecol.2003.2.04","DOIUrl":"https://doi.org/10.3176/biol.ecol.2003.2.04","url":null,"abstract":"","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130180274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2001.3.01
B. I. Dybern, S. Fonselius
The development of international marine research in the Baltic Sea during the 20th century and Estonian participation are described. The organization of the International Council for Exploration of the Sea and its different working groups connected to the research in the Baltic Sea is explained. The founding and activities of the Conference of Baltic Oceanographers and the Baltic Marine Biologists are described. The international synoptic investigations of the Baltic and especially the "Cooperative Synoptic Investigation of the Baltic", "The International Baltic Year", "Baltic Open Sea Experiment", "Patchiness Experiment", and "The Skagerrak Experiment" and their results are briefly discussed. Some other recent international cooperation is also touched upon. Estonian participation in these activities is explained.
{"title":"INTERNATIONAL MARINE SCIENTIFIC ACTIVITIES IN THE BALTIC SEA WITH SPECIAL REFERENCE TO ESTONIAN PARTICIPATION","authors":"B. I. Dybern, S. Fonselius","doi":"10.3176/biol.ecol.2001.3.01","DOIUrl":"https://doi.org/10.3176/biol.ecol.2001.3.01","url":null,"abstract":"The development of international marine research in the Baltic Sea during the 20th century and Estonian participation are described. The organization of the International Council for Exploration of the Sea and its different working groups connected to the research in the Baltic Sea is explained. The founding and activities of the Conference of Baltic Oceanographers and the Baltic Marine Biologists are described. The international synoptic investigations of the Baltic and especially the \"Cooperative Synoptic Investigation of the Baltic\", \"The International Baltic Year\", \"Baltic Open Sea Experiment\", \"Patchiness Experiment\", and \"The Skagerrak Experiment\" and their results are briefly discussed. Some other recent international cooperation is also touched upon. Estonian participation in these activities is explained.","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127897609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3176/biol.ecol.2003.3.05
S. Golubkov, Saara Bäck, V. N. Nikulina, Marina I. Orlova, Lydia E. Anokhina, Ludmila P. Umnova
. Ecosystem studies in the littoral zone of the Neva estuary have shown that eutrophication is a serious environmental problem for the coastal zone of the eastern part of the Gulf of Finland. It brings about an intensive development of filamentous algae Cladophora glomerata and periodical blue-green blooms. Wave action detaches Cladophora mats from substrates and causes an intensive secondary pollution of the beaches in the St. Petersburg Resort District. The zoobenthos community is dominated by caddis fly larvae in the shallow littoral. The alien species Dreissena polymorpha in deeper littoral is facilitating filamentous algae growth, clearing the water and recycling nutrients. An important recovery measure in the ecosystem management in the coastal zone is removal of hard substrates from shallow waters to curb the development of filamentous algae. Another important measure is nutrients reduction and control of the P : N ratio in the coastal zone of the Gulf of Finland.
{"title":"Effects of eutrophication and invasion of Dreissena polymorpha in the coastal zone of the eastern Gulf of Finland","authors":"S. Golubkov, Saara Bäck, V. N. Nikulina, Marina I. Orlova, Lydia E. Anokhina, Ludmila P. Umnova","doi":"10.3176/biol.ecol.2003.3.05","DOIUrl":"https://doi.org/10.3176/biol.ecol.2003.3.05","url":null,"abstract":". Ecosystem studies in the littoral zone of the Neva estuary have shown that eutrophication is a serious environmental problem for the coastal zone of the eastern part of the Gulf of Finland. It brings about an intensive development of filamentous algae Cladophora glomerata and periodical blue-green blooms. Wave action detaches Cladophora mats from substrates and causes an intensive secondary pollution of the beaches in the St. Petersburg Resort District. The zoobenthos community is dominated by caddis fly larvae in the shallow littoral. The alien species Dreissena polymorpha in deeper littoral is facilitating filamentous algae growth, clearing the water and recycling nutrients. An important recovery measure in the ecosystem management in the coastal zone is removal of hard substrates from shallow waters to curb the development of filamentous algae. Another important measure is nutrients reduction and control of the P : N ratio in the coastal zone of the Gulf of Finland.","PeriodicalId":250336,"journal":{"name":"Proceedings of the Estonian Academy of Sciences. Biology. Ecology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128151463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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