Environmental Drivers of Macroinvertebrate Assemblages within Peat Pool Habitat-Implication for Bioassessment

Macroinvertebrates are a crucial component of wetland trophic webs. Many taxa are used as bioindicators of ecosystem change. However, relationships between macroinvertebrates and the environmental factors in peat pool habitats are still not well recognized. The present study shows the results of long-term studies during the years 2010–2020, on the responses of macroinvertebrates to the changes of environmental variables in a peat pool habitat formed as a result of peat exploitation on continental raised bog. The RDA analysis significantly explained 87.3% of the variance in macroinvertebrates abundances. Assemblages of most taxa (Anisoptera, Chironomidae, Ceratopogonidae, Coleoptera, Hydrachnidia and Tabanidae) showed a strong relationship with N-NO3 and pH. Moreover, densities of Chaoboridae larvae were explained by chlorophyll-a concentrations. Dominant taxon, Chironomidae, constituted from 48% to 87% of total faunal density. The highest proportions showed larvae of Psectrocladius sp. (gr. sordidellus) and Chironomus sp. Changes in the composition of macroinvertebrate fauna over a period of 10 years reflect the eutrophication process of the peat pool and deterioration of habitat conditions.

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Changes in Canadian seabird populations and ecology since 1970 in relation to changes in oceanography and food webs

Environmental Reviews ◽

10.1139/a09-013 ◽

2009 ◽

Vol 17 (NA) ◽

pp. 267-286 ◽

Cited By ~ 46

Author(s):

Anthony J. Gaston ◽

Douglas F. Bertram ◽

Andrew W. Boyne ◽

John W. Chardine ◽

Gail Davoren ◽

...

Keyword(s):

Cold Water ◽

Biological Indicators ◽

Ecosystem Change ◽

The North ◽

The Pacific ◽

Decadal Scale ◽

Canadian Wildlife ◽

Term Monitoring ◽

Long Term Studies

Systematic monitoring of seabird populations in Canada has been ongoing since the 1920s and the monitoring of diets and other biological indicators of ecosystem change started in the 1970s. Long-term monitoring of population parameters began in the 1980s. These studies originally were conducted mainly by the Canadian Wildlife Service, but subsequently have involved several universities and nongovernment organization groups. We review the results of this monitoring from the 1970s onwards for six oceanographic regions to assess population trends among Canadian seabirds and correlated trends in diets, phenology, and other breeding biology variables. Within regions, trends in most variables studied have been broadly congruent, but there was often variation among regions. In particular, seabird populations in the Pacific coast zone affected by the California Current upwelling system have shown generally negative trends since the 1980s, whereas trends for populations of the same species to the north of this zone have been mainly positive. Likewise, on the east coast, trends at Arctic colonies have been decoupled from those at colonies around Newfoundland and in the Gulf of St. Lawrence, especially since the major cold water event of the early 1990s. Several long-term studies have shown an association between population events and diet and phenology changes. Diet and indicators of condition (chick growth, reproductive success) sometimes responded very rapidly to oceanic changes, making them excellent signals of ecosystem perturbations. The review highlights the effects of decadal-scale regime shifts on Canadian seabirds, confirms the value of long-term studies and supports the applicability of single-site observations to regional populations.

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Implications of Long-Term Studies of Three Model Preschool Programs for Head Start

PsycEXTRA Dataset ◽

10.1037/e584762012-007 ◽

2008 ◽

Author(s):

Lawrence J. Schweinhart ◽

Elena V. Malofeeva ◽

Lawrence J. Schweinhart ◽

Michelle M. Englund ◽

Arthur J. Reynolds ◽

...

Keyword(s):

Head Start ◽

Preschool Programs ◽

Long Term Studies

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Primary varicose veins

Phlebologie ◽

10.1055/s-0037-1622305 ◽

2010 ◽

Vol 39 (03) ◽

pp. 133-137

Author(s):

H. Partsch

Keyword(s):

Varicose Veins ◽

Compression Therapy ◽

Daily Practice ◽

Clinical Severity ◽

Compression Stockings ◽

Primary Varicose Veins ◽

The Cost ◽

Convincing Data ◽

Long Term Studies

SummaryBackground: Compression stockings are widely used in patients with varicose veins. Methods: Based on published literature three main points are discussed: 1. the rationale of compression therapy in primary varicose veins, 2. the prescription of compression stockings in daily practice, 3. studies required in the future. Results: The main objective of prescribing compression stockings for patients with varicose veins is to improve subjective leg complaints and to prevent swelling after sitting and standing. No convincing data are available concerning prevention of progression or of complications. In daily practice varicose veins are the most common indication to prescribe compression stockings. The compliance depends on the severity of the disorder and is rather poor in less severe stages. Long-term studies are needed to proof the cost-effectiveness of compression stockings concerning subjective symptoms and objective signs of varicose veins adjusted to their clinical severity. Conclusion: Compression stockings in primary varicose veins are able to improve leg complaints and to prevent swelling.

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Diatoms and aquatic palynomorphs in the sediments of the Eurasian Arctic seas and their significance for paleooceanological investigations in the Arctic

Issues of modern algology (Вопросы современной альгологии) ◽

10.33624/2311-0147-2019-2(20)-246-251 ◽

2019 ◽

pp. 246-251

Author(s):

Yelena I. Polyakova ◽

Yekaterina I. Novichkova ◽

Tatiana S. Klyuvitkina ◽

Elizaveta A. Agafonova ◽

Irina M. Kryukova

Keyword(s):

Bering Sea ◽

Surface Sediments ◽

Sea Water ◽

The Arctic ◽

Marginal Filter ◽

Arctic Seas ◽

Hydrological Parameters ◽

The Arctic Ocean ◽

Long Term Studies

Presented the results of long-term studies of diatoms and aquatic palynomorphs in surface sediments of the Arctic seas and the possibility of their use for the reconstructions of paleocirculation water masses, advection of Atlantic and Bering sea water into the Arctic ocean, changes in the river runoff to the seas, sedimentary processes in the marginal filter of the largest rivers, seasonal sea ice cover and other hydrological parameters.

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Aspects of the Evolution of the Romanian Tourists’ Preferences Concerning the Domestic Tourist Destinations

Valahian Journal of Economic Studies ◽

10.2478/vjes-2019-0002 ◽

2019 ◽

Vol 10 (1) ◽

pp. 21-28

Author(s):

Aniela Bălăcescu ◽

Radu Șerban Zaharia

Keyword(s):

Logistic Model ◽

Local Level ◽

Medium Term ◽

Tourist Destinations ◽

Tourism Management ◽

Production And Consumption ◽

On Line ◽

The One ◽

Long Term Studies

Abstract Tourist services represent a category of services in which the inseparability of production and consumption, the inability to be storable, the immateriality, and last but not least non-durability, induces in tourism management a number of peculiarities and difficulties. Under these circumstances the development of medium-term strategies involves long-term studies regarding on the one hand the developments and characteristics of the demand, and on the other hand the tourist potential analysis at regional and local level. Although in the past 20 years there has been tremendous growth of on-line booking made by household users, the tour operators agencies as well as those with sales activity continue to offer the specific services for a large number of tourists, that number, in the case of domestic tourism, increased by 1.6 times in case of the tour operators and by 4.44 times in case of the agencies with sales activity. At the same time, there have been changes in the preferences of tourists regarding their holiday destinations in Romania. Started on these considerations, paper based on a logistic model, examines the evolution of the probabilities and scores corresponding to the way the Romanian tourists spend their holidays on the types of tourism agencies, actions and tourist areas in Romania.

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Planning a system of permanent sample plots for integrated long-term studies of community-based forest management

Banko Janakari ◽

10.3126/banko.v16i2.965 ◽

1970 ◽

Vol 16 (2) ◽

pp. 3-11 ◽

Cited By ~ 10

Author(s):

H Meilby ◽

L Puri ◽

M Christensen ◽

S Rayamajhi

Keyword(s):

Forest Management ◽

Key Words ◽

Research Note ◽

Managed Forests ◽

Community Based ◽

Permanent Sample Plots ◽

Long Term Studies

To monitor the development of four community-managed forests, networks of permanent sample plots were established in 2005 at sites in Chitwan, Kaski and Mustang Districts, Nepal. This research note documents the procedures used when preparing for establishment of the plot networks, evaluates the applied stratification of the forest on the basis of data gathered in pilot surveys conducted in the early 2005, and provides a discussion on the implications of the choices made. Key words: Community-managed forests; permanent sample plots; stratification; allocation; estimates Banko Janakari Vol.16(2) 2006 pp.3-11

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Formulating Industry-Academic Collaborations That Work: Best Practices to Ensure a Strong Relationship After the Agreements are Signed

Technology & Innovation ◽

10.21300/21.2.2020.169 ◽

2020 ◽

Vol 21 (2) ◽

pp. 169-177

Author(s):

Michael B. Dilling ◽

Anne C. DiSante ◽

Ross Durland ◽

Christine E. Flynn ◽

Leonid Metelitsa ◽

...

Keyword(s):

Decision Making ◽

Best Practices ◽

Product Development ◽

Strong Relationship ◽

Governance Structure ◽

Collaborative Relationships ◽

Skill Sets ◽

Pragmatic Aspects

Collaborations between academia and industry are growing in scope, duration, and sophistication. The best collaborations recognize the unique strengths and skill sets of both parties and are structured to leverage what each party does best. In many cases, these collaborations develop into long-term relationships, and it is important to develop the systems and structures needed to support these relationships to ensure that they meet the needs of both sides. Successful collaborations require the formulation of a governance structure to facilitate communication, decision-making, assessment of progress, and the inevitable changes of direction that accompany product development. This panel explored the pragmatic aspects of successfully structuring collaborations and managing the relationships after the deal is done. Several dominant themes associated with successful collaborative relationships emerged from the discussion, and these will be explored in this article.

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Long Term Monitoring of the Macrobenthos of the Upper Clyde Estuary

Water Science & Technology ◽

10.2166/wst.1984.0143 ◽

1984 ◽

Vol 16 (5-7) ◽

pp. 359-373 ◽

Cited By ~ 10

Author(s):

Anne R Henderson

Keyword(s):

Water Quality ◽

Seasonal Variation ◽

Organic Pollution ◽

Long Term Changes ◽

Pollution Loading ◽

Faunal Density ◽

History Of ◽

Long Term Monitoring ◽

Term Monitoring

The sublittoral macrobenthic invertebrate populations of the Upper Clyde Estuary are described. The estuary has a long history of organic pollution. The long term changes in species composition, faunal density and dominance patterns between 1974 and 1980 are presented. The fauna is dominated by brackish, pollution tolerant oligochaetes and polychaetes. Fluctuations in populations can be related to both seasonal variation in environmental conditions and long term improvements in water quality through a reduction in pollution loading to the estuary.

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