16 Works

Factors Affecting Performance of Municipal Wastewater Treatment Plants

Vallo Kõrgmaa

Functional biogeography of Neotropical moist forests: trait-climate relationships and assembly patterns of tree communities

Bruno Pinho, Marcelo Tabarelli, Cajo Ter Braak, S. J. Wright, Victor Arroyo-Rodriguez, Maíra Benchimol, Bettina Engelbrecht, Simon Pierce, Peter Hietz, Bráulio Santos, Carlos Peres, Sandra Müller, Ian Wright, Frans Bongers, Madelon Lohbeck, Ülo Niinemets, Martijn Slot, Steven Jansen, Davi Jamelli, Renato Augusto Ferreira De Lima, Nathan Swenson, Richard Condit, Jos Barlow, Ferry Slik, Manuel Hernández-Ruedas … & Felipe Melo
Aim: Here we examine the functional profile of regional tree species pools across the latitudinal distribution of Neotropical moist forests, and test trait-climate relationships among local communities. We expected opportunistic strategies (acquisitive traits, small seeds) to be overrepresented in species pools further from the equator due to long-term instability, but also in terms of abundance in local communities in currently wetter, warmer and more seasonal climates. Location: Neotropics. Time period: Recent. Major taxa studied: Trees....

Potato yield forecast by using guttation test method in household laboratory conditions

Edvin Nugis, Jaan Kuht & Аleksei Komarov
This paper aims to present the use of the guttation test method to establish the relationship between guttation and potato (Solanum tuberosum L.) yield. The laboratory tests (in vitro L.) under household conditions were carried out. To assess the state of the potato (variety 'Ando') yield the field (0.07 ha) of the family farm "Miili" were used. Assessment of the state of guttation plant barley (Hordeum vulgaris L.) variety 'Anni' by using of hydro-thermostat in...

Lühiartikkel : Muldkatte talitlemise pedoökoloogilised seaduspärasused

Raimo Kõlli
The contradictory statements and opinions, which need by the mind of author additional explanation or disentangle are in the work followings: stages in the forming soil covers' humus status; additional carbon sequestration into the soil; discord between consumption and accumulation of soil organic matter; the influence of land use, land-use change and soil tillage on soil humus status; permanent and dynamic properties of soil; the role of agriculture in carbon turnover; degradation of soil fertility;...

Parental age does not influence offspring telomeres during early life in common gulls (Larus canus)

Tuul Sepp, Richard Meitern, Britt Heidinger, Kristina Noreikiene, Kalev Rattiste, Peeter Hõrak, Lauri Saks, Jeffrey Kittilson, Janek Urvik & Mathieu Giraudeau
Parental age can affect offspring telomere length through heritable and epigenetic-like effects, but at what stage during development these effects are established is not well known. To address this, we conducted a cross-fostering experiment in common gulls (Larus canus) that enabled us distinguish between pre- and post-natal parental age effects on offspring telomere length. Whole clutches were exchanged after clutch completion within and between parental age classes (young and old) and blood samples were collected...

Opposing community assembly patterns for dominant and non-dominant plant species in herbaceous ecosystems globally

Carlos Alberto Arnillas, Elizabeth Borer, Eric Seabloom, Juan Alberti, Selene Baez, Jonathon Bakker, Elizabeth Boughton, Yvonne Buckley, Miguel Bugalho, Ian Donohue, John Dwyer, Jennifer Firn, Riley Gridzak, Nicole Hagenah, Yann Hautier, Aveliina Helm, Anke Jentsch, , Kimberly Komatsu, Lauri Laanisto, Ramesh Laungani, Rebecca McCulley, Joslin Moore, John Morgan, Pablo Peri … & Marc Cadotte
Biotic and abiotic factors interact with dominant plants —the locally most frequent or with the largest coverage— and non-dominant plants differently, partially because dominant plants modify the environment where non-dominant plants grow. For instance, if dominant plants compete strongly, they will deplete most resources, forcing non-dominant plants into a narrower niche space. Conversely, if dominant plants are constrained by the environment, they might not exhaust available resources but instead may ameliorate environmental stressors that usually...

International Scientific Conference „Sustainable fruit and berry cultivation“ : the book of abstracts

Reelika Rätsep, Hedi Kaldmäe & Karmen Pääso
Dear conference participants and guests, As director of the Institute of Agricultural and Environmental Sciences of Estonian University of Life Sciences, I have a great honour to greet you at the scientific conference dedicated to the 100th anniversary of Polli Horticultural Research Centre. Research on fruits and berries in Estonia and at our University is carried out in two locations – at horticultural research centre at Polli village in Southern Estonia and on our university...

A meta-analysis of mesophyll conductance to CO2 in relation to major abiotic stresses in poplar species

Lahcen Benomar, Raed Elferjani, Mina Momayyezi, Roberto Tognetti, Ülo Niinemets, Raju Y Soolanayakanahally, Guillaume Théroux-Rancourt, Tiina Tosens, Francesco Ripullone, Simon Bilodeau-Gauthier, Mohammed S Lamhamedi, Carlo Calfapietra & Mebarek Lamara
Mesophyll conductance (gm) determines the diffusion of CO2 from the substomatal cavities to the site of carboxylation in the chloroplasts and represents a critical component of the diffusive limitation of photosynthesis. In this study, we evaluated the average effect sizes of different environmental constraints on gm in Populus spp., a forest tree model. We collected raw data of 815 A-Ci response curves from 26 datasets to estimate gm, using a single curve-fitting method to alleviate...

Species lists of 14 Estonian coastal meadow sites with different management history

Marika Kose, Karin Kaljund & Kaili Kattai
The data were collected during July-August 2015 in locations with coordinates in dataset. The sites have unique names and their management has been evaluated as permanently managed, restored before 2005 and restored after 2005. Their condition is estimated on expert level as good or poor, regarding vegetation composition and height. The data were collected from 20 plots of the size 0,5 x 0,5 m. In the dataset the number marks in how many plots out...

Supplementary table for Henno et al. in the Journal of Dairy Science with the title Effect of monensin on milk fatty acid profile in dairy cows and on the use of fatty acids for early diagnosis of elevated blood plasma concentrations of nonesterified fatty acids and hyperketonemia

Merike Henno, Katri Ling, Tanel Kaart, Tiia Ariko, Priit Karis, Hanno Jaakson, Sirje Kuusik & Meelis Ots
The use of monensin to reduce health disorders associated with negative energy balance in transition cows is widely used. Precalving continuous-release monensin capsule administration affected postcalving milk FA profile indicating alterations in the rumen microbiota of these cows.

Research into the parameters of a potato harvester's potato heap distributor, and the justification of those parameters

Jüri Olt, Valerii Adamchuk, Viktor Korniushyn, Viktor Melnik, Hryhoriy Kaletnik, Yevhen Ihnatiev & Risto Ilves
The low levels of efficiency and general quality when it comes to the use of potato harvesters in difficult soil and climatic conditions substantiate the relevance of the problem which is faced in terms of research by technologically advanced equipment and tools. They are looking to increase the efficiency of potato harvesters. This paper serves to justify the formation of the design and technical parameters of the V-type distributor, which directly acts on the undermined...

List of medicinal plant species in the semi-natural Miscanthus sinensis grasslands in Nagano and Yamanashi Prefectures, Japan

Indrek Melts
The dataset collected from the typical and the most representative type of semi-natural grasslands in Satoyama landscape in Honshu island, Japan. Twelve grasslands were located on the Kaida Plateau between 1000–1300 m a.s.l. in Nagano Prefecture (approximate geographical coordinate of the study area: 35.931555N, 137.604300E) and six grasslands were located on the north-eastern foot of Mt. Fuji between 1000–1300 m a.s.l. in Yamanashi Prefecture (approximate geographical coordinate of the study area: 35.431819N, 138.812522E). The study sites...

Bumble bee foraged pollen analyses in spring time in Southern Estonia shows abundant food sources: dataset

Anna Bontšutšnaja, Reet Karise, Marika Mänd & Guy Smagghe
The database contains the results of DNA metabarcoding (sequences, relative importances) and microscopy pollen count data.

Maakasutuse, maakasutuse muutuse ja metsanduse sektori sidumisvõimekuse analüüs kuni aastani 2050

Mati Valgepea, Madis Raudsaar, Helen Karu, Eve Suursild, Enn Pärt, Allan Sims, Karin Kauer, Alar Astover, Martti Maasik, Airiin Vaasa & Paavo Kaimre
Kliimaneutraalsuse saavutamiseks 2050. aastaks on oluline kasvuhoonegaaside (KHG) heitkoguste vähendamine ja sidumisvõimekuse suurendamine kõigis sektorites. Et eesmärki täita, tuleb seada selged sihid, hinnates erinevates sektorites KHG heite vähendamise ja sidumise suurendamise potentsiaali ning käsitleda sektori mõju laiemalt ka majanduse konkurentsivõimele. Maakasutuse, maakasutuse muutuse ja metsanduse (LULUCF) sidumisvõimekuse uuring on valminud Keskkonnaministeeriumi tellimusel analüüsimaks kompleksselt LULUCFi sektori KHG sidumisvõimaluste potentsiaali ja ulatust 2030. ja 2050. aasta kliimapoliitika eesmärkide täitmiseks arvestades sealjuures ka pikemaajalist perspektiivi (kuni 2100....

eDNA metabarcoding in lakes to quantify influences of landscape features and human activity on aquatic invasive species prevalence and fish community diversity

Lilian Pukk, Jeannette Kanefsky, Amanda Heathman, Ellen Weise, Lucas Nathan, Seth Herbst, Nicholas Sard, Kim Scribner & John Robinson
Aim: Our goal was to use eDNA metabarcoding to characterize fish community diversity, detect aquatic invasive species (AIS), and assess how measures of community (or AIS) diversity are influenced by lake physical and environmental covariates, measures of hydrological connectivity, and human accessibility. Location: Michigan, USA. Methods: eDNA samples collected from 22 lakes were sequenced using two mitochondrial gene regions (12S and 16S rRNA). Metabarcoding data were compared to traditional fisheries survey data for a subset...

Tree water uptake enhances nitrogen acquisition in a fertilized boreal forest – but not under nitrogen poor conditions

Nils Henriksson, Hyungwoo Lim, John Marchall, Oskar Franklin, Ross McMurtrie, Reimo Lutter, Ruth Magh, Tomas Lundmark & Torgny Näsholm
Understanding how plant water uptake interacts with acquisition of soil nitrogen (N) and other nutrients is fundamental for predicting plant responses to a changing environment, but it is an area where models disagree. We present a novel isotopic labelling approach which reveals spatial patterns of water and N uptake, and their interaction, by trees. The stable isotopes 15N and 2H were applied to a small area of the forest floor in stands with high and...

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  • 2021

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  • Estonian University of Life Sciences
  • University of Bayreuth
  • Helmholtz Centre for Environmental Research
  • Quebec Intensive Silviculture Network
  • Ghent University
  • University of Washington
  • University of Pretoria
  • Archbold Biological Station
  • Field Museum of Natural History
  • Federal University of Paraíba