Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Margus Pensa"'
Autor:
Eve Avel, Margus Pensa
Publikováno v:
Estonian Journal of Earth Sciences, Vol 62, Iss 2, Pp 113-119 (2013)
In peatland palaeoecological studies, the preparation of peat samples for testate amoebae (TA) analysis involves boiling of samples and microsieving them through a 15-μm sieve. We studied the effect of these preparation stages on the estimation of T
Externí odkaz:
https://doaj.org/article/cccfbba1f474442e864d077cd403caf0
Publikováno v:
Wetlands Ecology and Management. 30:161-169
Artificial drainage of wetlands can increase nest predation risk through landscape changes that support higher predator numbers or expose the nests. We experimentally studied how nest predation responds to reversing such pressures by forested wetland
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecf6cad03def2ab777fcad2854935247
https://doi.org/10.1007/s11273-021-09826-4
https://doi.org/10.1007/s11273-021-09826-4
Publikováno v:
Wetlands Ecology and Management. 22:399-417
Bog ecosystems are sensitive to anthropogenic disturbance, including drainage and air pollution. Carbon (C) balance measurements to determine the effect of disturbance on bog functioning are laborious; therefore reliable proxies for C fluxes that cou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abe16fd3fb48ca393a7a0b36ddf5b2c9
https://doi.org/10.1007/s11273-014-9339-5
https://doi.org/10.1007/s11273-014-9339-5
Autor:
Tiiu Alliksaar, Madis Kiisk, Alan H. Tkaczyk, E. Realo, Margus Pensa, Helen Karu, Kadri Isakar, Taavi Vaasma
Publikováno v:
Journal of environmental radioactivity. 174
Peat cores were collected from a Sphagnum-dominated Selisoo bog, which is located about 40 km from the large oil shale-fired power plants (PPs) in Estonia. These PPs have been operational from the 1960's and had the largest negative impact on the sur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::512a72176484d94365fc03bd617d4da9
https://pubmed.ncbi.nlm.nih.gov/27491858
https://pubmed.ncbi.nlm.nih.gov/27491858
Publikováno v:
Boreas. 40:367-378
Niinemets, E., Pensa, M. & Charman, D. J. 2010: Analysis of fossil testate amoebae in Selisoo Bog, Estonia: local variability and implications for palaeoecological reconstructions in peatlands. Boreas, 10.1111/j.1502-3885.2010.00188.x. ISSN 0300-9483
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7998e62e2884f3daf45b95856a359afd
https://doi.org/10.1111/j.1502-3885.2010.00188.x
https://doi.org/10.1111/j.1502-3885.2010.00188.x
Publikováno v:
Plant Ecology. 208:155-166
Evergreen boreal plant species express high variability in their leaf traits. It remains controversial whether this within-species variability is constrained to the same leaf trait relationships as has been observed across species. We sampled leaves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f97fe22c92d89e0690b99466c31c015b
https://doi.org/10.1007/s11258-009-9695-z
https://doi.org/10.1007/s11258-009-9695-z
Publikováno v:
Canadian Journal of Forest Research. 38:2674-2686
The establishment of plantations is the most common method of opencast reclamation, but few studies have addressed the influence of planted trees on the recovery of biodiversity in new forest sites. The goal of this study was to determine whether the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c555d63f69a64e6eaa432b587f8c932b
https://doi.org/10.1139/x08-098
https://doi.org/10.1139/x08-098
Publikováno v:
Canadian Journal of Forest Research. 37:1599-1604
Within-species variation in needle traits is an important characteristic of conifers enabling trees to grow in different environments. We compared mean needle age (NA), shoot growth, and nutrient conservation in Scots pine ( Pinus sylvestris L.) popu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4ebd5bdf4025bc542c4ba484a8a9c1d
https://doi.org/10.1139/x07-012
https://doi.org/10.1139/x07-012
Publikováno v:
International Journal of Biometeorology. 50:205-214
The relationships between climatic variables and Scots pine (Pinus sylvestris L.) growth and needle dynamics were studied in three stands in Estonia and in four stands located near the northern timberline in Lapland. The trees sampled in Estonia had
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd8b6b2a37e6690bb61133fd0b097b59
https://doi.org/10.1007/s00484-005-0013-8
https://doi.org/10.1007/s00484-005-0013-8
Autor:
Risto Jalkanen, Margus Pensa
Publikováno v:
Tree Physiology. 25:1265-1271
Latitudinal variation in needle longevity of conifers in response to climatic variability is a well-known phenomenon, but its significance has only rarely been studied. Scots pine (Pinus sylvestris L.) stands were investigated in four locations in La
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cbe1eb8c3977fce1233aa985b13bee7
https://doi.org/10.1093/treephys/25.10.1265
https://doi.org/10.1093/treephys/25.10.1265